GE Medical Systems
Siemens Multix
Siemens Multix
Modality: XR Alignment and Calibration Component Locations Error Codes Functional Checks Logic and Block Diagrams Preventive Maintenance Software and Diagnostics Theory Troubleshooting
This program and its contents are RESTRICTED to GE Medical Systems and approved licensees. For GE Medical Systems and approved licensee personnel only. If you are not a GE Medical Systems or approved licensee employee, you must close this application immediately. Disclosure to third parties prohibited. GES-produced documents are not intended for use as documentation for field-based diagnostic imaging equipment. Copyright GE Medical Systems 2003
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GE Medical Systems
Siemens Multix
Alignment and Calibration
ALIGNMENT AND CALIBRATION Patient Positioning
X-ray Generation
Horizontal SID Adjustment Overhead Support 3D-III Setup Transverse Detent Longitudinal Detent Installing SID Signal Generators Setting the Horizontal SID Signal Generators Setting the Vertical SID Signal Generators
Table Catapult Bucky Cabinet Height Adjustment SID Transmitter Cable
Tomographic Adjustments Layer Height Limit Switches Swivel Angle Motor Belt Tension M4 Control Check Tomographic Speeds Tomo Braking Lead Time Adjustment Tomo Exposure Checks
Digital Collimator Cover Removal Display / X-ray Field Alignment Focus Leaves Adjustment Lamp Replacement Light Localizer Test Test Mode Switch Settings
Filament Current Adjustment Iontomat Setup Required Materials Getting Started System Checks
PBL System Adjustment Notes Adjustment Steps
Rotor Control Adjustment Prep Time Anode Braking Time Rotor Accelerate Time kVIST mAs
Tube Seasoning
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Alignment and Calibration
ALIGNMENT AND CALIBRATION Patient Positioning
X-ray Generation
Horizontal SID Adjustment Overhead Support 3D-III Setup Transverse Detent Longitudinal Detent Installing SID Signal Generators Setting the Horizontal SID Signal Generators Setting the Vertical SID Signal Generators
Table Catapult Bucky Cabinet Height Adjustment SID Transmitter Cable
Tomographic Adjustments Layer Height Limit Switches Swivel Angle Motor Belt Tension M4 Control Check Tomographic Speeds Tomo Braking Lead Time Adjustment Tomo Exposure Checks
Digital Collimator Cover Removal Display / X-ray Field Alignment Focus Leaves Adjustment Lamp Replacement Light Localizer Test Test Mode Switch Settings
Filament Current Adjustment Iontomat Setup Required Materials Getting Started System Checks
PBL System Adjustment Notes Adjustment Steps
Rotor Control Adjustment Prep Time Anode Braking Time Rotor Accelerate Time kVIST mAs
Tube Seasoning
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Alignment and Calibration
Digital Collimator Select a topic:
Display / X-ray Field Alignment
Cover Removal
1. Remov Remove e 4 screw screws s hold holdin ing g the the wind window ow wit with h crosshairs in place. p lace. Remove the window.
Display / X-ray Field Alignment
2. Turn urn on on the the system.
Focus Leaves Adjustment
3. Manua Manuall lly y pull pull the Fil Film m Tra Tray y out sli sligh ghtl tly y.
Lamp Replacement
4. Set Set the the SID SID to 100 cm, cm, then then set set an are area a of 30 30 cm square with the rotary knobs.
Light Localizer Test Test Mode
5.
Switch Settings
Cover Removal 1. Remo Remove ve 4 coun counte ters rsun unk k scr screw ews. s. 2. Loos Loosen en 2 capt captur ured ed All Allen en scr screw ews. s. 3. Pull Pull cover cover off, off, taking taking care not to hit the Light Light Localizer Lamp.
Set the S2 Adju Adjusti sting ng Screw Screw to a width width of 76.5 76.5 mm. mm. The setting gauge (usually taped inside the collimator cover) should fit snugly in the diaphragm aperture.
6. Set Set the the S3 Adj Adjus usti ting ng Screw Screw to a heigh heightt of 65 65 mm. mm. The setting gauge (should fit snugly in the diaphragm aperture. 7.
Verify erify by running running a search search run. run. (Cyc (Cycle le coll collima imatio tion n by reinserting the cassette tray in full auto.)
8. Make Make an an expo exposu sure re to to test test the the adju adjust stmen ments ts.. 9. Inst Install all the the cros crossha shair ir wind window ow and and 4 scre screws ws..
Cont i i nued nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
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Notes
GE Medical Systems
Digital Collimator,
Siemens Multix
Alignment and Calibration
continued
Focus Leaves Adjustment
Lamp Replacement
1. Remove the Collimator.
1.
2. Close the leaves with the rotary knobs. 3.
Set the setting gauge against the flange.
4. Verify that the leaves are set symmetrically across the gauge center line. If not, bend the leaves by hand. 5.
Verify that the plastic flange ring is installed.
6. Install the Collimator by tightening 3 Allen screws. 7. Check the X-ray-to-light and bucky centering.
Open the lamp cover carefully, and pull it up to remove it.
2. Remove the old halogen bulb. Important! Do not touch the bulb with your hand. Oil from your skin will shorten bulb life. Use a glove or paper towel.
3.
Install a new halogen bulb into the holder, and push it carefully against the stop.
4.
Carefully install the lamp cover.
Light Localizer Test Check the turn-on time for the visual localizer and for the line-type visual localizer. The Collimator D11 board (or D12 depending on model) is programmed with a turn-on time of either 45 or 60 seconds.
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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Notes
GE Medical Systems
Digital Collimator,
Siemens Multix
Alignment and Calibration
continued
Test Mode
Angle Coder Testing
Indicator Self-Testing
1.
1.
On Collimator D11 board, set S1 to position 1, then press S2 to reset.
2. The test mode runs 3 times, during which you should see:
3.
•
HR1 on D11 turning on and off
•
all LEDs on D11 (except voltage LEDs) flashing
•
all text displays on D12 flashing
•
all digital displays on D11 flashing
•
all digital displays on D12 flashing
•
light localizer and line-type visual localizer flashing
2.
Watch the display as you turn the angle coder slowly to the right, opening the collimator. On the Field Size Indicator, you should see: •
left digit counting from 0 to 9
•
center digit shows 1
•
right digit alternates between 0 and 1
Watch the display as you turn the angle coder slowly to the left, closing the collimator. On the Field Size Indicator, you should see: •
left digit counting from 9 to 0
•
center digit shows 0
•
right digit alternates between 0 and 1
On D11, set S1 to normal position to end self-testing.
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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Notes
GE Medical Systems
Digital Collimator,
Siemens Multix
Alignment and Calibration
continued
Test Mode, continued
Mercury Switch Testing
Control Key Testing
1.
Press each control key and watch the SID on D12. (Front panel on collimator.)
Move the tube unit through the positions below and watch the control unit on D12. Position
Press
Display Should Read
Display Should Read
Ready
1 PBL
2 Manual
3 4
2.
Set D11 S1 to position 2 for normal operation.
3.
Verify Indicator i30 shows 0, and the dot is blinking.
5
D11 Transmit / Receive Module Testing 1.
Unplug Collimator D11 board fiber connections.
2. Connect the fiber cable jumper at i23 and i24. 3. The circuit self-tests. Indicator i30 counts from 9 to 0.
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Cont i nued on ne xt page
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Digital Collimator,
Siemens Multix
continued
Switch Settings
Switch S2
These dipswitch banks are found on the Collimator D11 board (or D12 depending on model).
Switch S1 #
Name
On
Off
1
Loop
Test mode
Normal mode
2
cm in FFA
SID display in cm
SID display in inches
3
cm in field
Field size display in cm
Field size display in inches
4
T = light
Light localizer turn on time is 45 seconds
Light localizer turn on time is 60 seconds
5
USA / EUR
Semi-auto by USA regulations; a smaller displayed format goes to full format if the SID changes
Semi-auto by Euro regulations; a smaller displayed format is maintained if the SID changes
6
--
Must be on
Invalid position
7
(Not used)
--
--
8
Test
Test mode
Normal mode
Alignment & Calibration
Component Locations
Alignment and Calibration
Error Codes
#
Name
On
Off
1
10 MHz
Wait state for 10 MHz CPU clock G2
G2 is 6.144 MHz
2
6 MHz
Wait state for 6.144 MHz CPU clock G2
G2 is 10 MHz
3
SI
Must be on
Invalid position
4
--
Must be on
Invalid position
Note
Descriptions in gray show factory-set switch positions.
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
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Notes
GE Medical Systems
Siemens Multix
Alignment and Calibration
Table Select a topic:
3.
Use a pencil to mark the Sensing Lever position on the Rail. Manually move the lever. The S4 Cassette Inserted switch should operate after 3-5 mm of travel. If not, turn the S4 adjusting screw and recheck.
4.
The S3 Tray Inserted switch should operate 2-5 mm before an inserted Cassette Tray hits the limit stop. If not, turn the S3 adjusting screw and recheck. Alternatively, try bending the Stop Angle and recheck. Stop here unless replacing Encoder.
5.
Remove the Encoder Assembly, and swap out the pulse generator with a new one.
6.
Back out the screws to free the Toothed Wheel.
7.
Manually turn the B1 wheel one full turn CW. Engage the teeth, then screw B1 back down.
8.
Manually turn the B2 wheel two full turns CCW. Engage the teeth, then screw B2 back down.
9.
Install the Pulse Generator Assembly.
Catapult Bucky Cabinet Height Adjustment SID Transmitter Cable
Catapult Bucky Cabinet Grid Drive Adjustment 1. Remove the Tabletop. 2. Adjust S1 for 2-4 mm between grid drive and inner frame edge. 3. Adjust S2 limit switch, and verify it works properly. 4.
Set grid travel distance to 27-29 mm.
5.
Proceed to Pulse Generator Adjustment.
Encoder Adjustment 1.
Remove the Grid, Iontomat Chamber, and Rear Sheet Metal Cover.
2. Unscrew two allen screws to remove the Grid Tappet and the Guide Piece.
10. Install the Grid Tappet and the Guide Piece. 11. Install the Iontomat Chamber, Grid, and Rear Sheet Metal Cover. Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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Notes
GE Medical Systems
Siemens Multix
Alignment and Calibration
Table, continued Catapult Bucky Cabinet,
continued
Additional Table Position Optionally, use S58 to stop the table at another vertical position of the customer’s choosing.
Film Tray Catch Adjustment 1. Insert the Film Tray. 2. Use a spring balance on the Film Tray handle to test the holding force of the Leaf Springs. 30-50 N is normal. 3. If necessary, adjust the two leaf springs on the bottom of the Film Tray and re-test.
Height Adjustment
SID Transmitter Cable 1. Move table to bottom position. 2.
Loosen nuts securing steel wire.
3.
Watch D28 board as tighten the wire. Stop when LEDs 23 - 28 light up.
4.
Bottom Table Position
Tighten nuts.
The lowest table position is controlled by S52. Set this switch to stop the table at a vertical position of 590 mm.
Top Table Position The highest table position is controlled by S53. Set this switch to stop the table at a vertical position of 915 mm.
Tomographic Table Position - Mid Position (CPH) The tomographic table position is controlled by S56 (when moving up) and S56A (when moving down). Set these switches to stop the table at a vertical position of 750 mm ± 1 mm. Verify table stoppage from both directions.
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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GE Medical Systems
Siemens Multix
Alignment and Calibration
Horizontal SID Adjustment 1.
Power up the system.
2.
Align the tube assembly with the Wall Stand.
3. Obtain SIDs from customer. 4. Measure the first SID with a tape. 5.
Set Switch S45 so the cam is actuated at the first SID.
6. Repeat steps 4 and 5 for SIDs 2, 3, and 4, as dictated by the customer.
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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GE Medical Systems
Siemens Multix
Alignment and Calibration
Tomographic Adjustments Select a topic:
Layer Height Limit Switches
Layer Height Limit Switches
Switches S13 and S14 are not adjustable. If they require replacement:
Swivel Angle
1. Move Table to tomo height.
Motor Belt Tension M4 Control Check Tomographic Speeds
2.
Set the tube head focal point to a table distance of 109 cm with a tape measure.
3.
Using the tomo rod scale, set the tube head focal point to a film plane height of 125 cm.
4.
Using the tomo rod scale, move the Planigraphic Block up to 25 cm, then set S13 to actuate at this setting.
5.
Using the tomo rod scale, move the Planigraphic Block down to 0 cm, then set S14 to actuate at this setting.
Tomo Braking Lead Time Adjustment Tomo Exposure Checks
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Tomographic Adjustments,
Alignment and Calibration
continued
Swivel Angle
Safety Limit Switches S26 and S27
Adjustment
1. Couple the tomo rod.
1. With the tube head/collimator set for a vertical beam to the table bucky, set the Light Localizer for a narrow, transverse beam, and turn it on.
2. Move to maximum layer height.
2. As you move the Support Arm from minimum SID to maximum SID, watch the light band. It should not shift. 3. In the table base, at the Coding Disk, loosen the threaded pin slightly. Loosen up the two screws on the PC Board (D26 and D27) Base Plate. 4. Install the Adjustment Brackets (Part Number 8951519G2094) into the two adjustment holes. 5. Adjust the coding disk and/or board base plate to lock the adjustment brackets in tightly. 6. Tighten up the two screws on the PC board (D26/ D27) base plate.
3. Set the SID to 115 cm. 4. Press the Bucky button. 5. Press the [<-|||||->] button. 6.
Move the 3D-III stand at the head end until the Bucky carriage’s rubber bumper is 5 mm in front of the crossbeam.
7.
Use the Axial Ring to set S26 to operate.
8.
Move the 3D-III stand at the foot end until the Bucky carriage’s rubber bumper is 5 mm in front of the crossbeam.
9.
Use the Axial Ring to set S27 to operate.
10. Verify that relay HR1 (M4) cuts out 5 mm before the mechanical stop.
7. Center the coding disk between D26 and D27, and tighten up the threaded pin. 8. Remove the Adjustment Brackets and verify whether the Coding Disk brushes the PC Board Base Plate. Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Tomographic Adjustments,
Alignment and Calibration
continued
Motor Belt Tension 1. Loosen 4 screws on the D30 layer height motor in the table base. Lift the motor. 2.
Hang a spring balance on the toothed belt.
3.
Set the tension so that the spring balance deflects the belt 5 mm. Tension of 10 N.
a. Press to first pressure point, verify the stand moves to right (tomo start position). b. Fully depress, verify the stand moves to left. c. Release, verify the stand returns to center. 8. Repeat test for each tomo key. 7 8
4. Tighten the 4 screws.
1
M4 Control Check 1.
At D30, remove the X3 wire plugs.
2.
Plug in the S27 16-pin connector. As you do, note the coding. Connect the wires as shown to the right.
3. Fit the generator release switch to the adapter coupling, then couple the tomo rod. 4. Set the SID to 115 cm. 5.
Press the up/down arrow key, and move the table to tomo position.
VK HK
9
16
D30/MP 0 V
D30/MP 30 V
6. Press a tomo key. (Choose a key which is not flashing.)
S27
7. Test the service switch: Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Tomographic Adjustments,
Alignment and Calibration
continued
Tomographic Speeds
7.
1. Connect an oscilloscope to board D30 M4 at TP7, in the table base.
At D30, remove the S27 16-pin connector. Reinstall the X3 wire plugs. As you do, note the coding.
8.
Program the following times into the generator tomo board:
2.
Turn on the system.
3.
Couple the tomo rod.
4.
Set the SID to 115 cm and the layer height to 125 mm.
5.
At the generator, turn off SS via S2 on D517.
6. Begin tomo and check time settings on the oscilloscope: Scope Time in Seconds
D30 Adj Pot
ZM1 D30.MP.0V D30 X3.7
25° / 0.8s
0.768
R76
0.85
40° / 2.0s
1.2
R74
2.08
1.6
R75
2.23
30° / 3.2s
2.56
R73
3.86
8° / 0.4s
1.2
--
--
8° / 0.8s
2.4
--
--
Tomo Key
30° / 2.0s
Measure Angle
24°
Letter
Time in Seconds
A
3.2
B
2.0
C
0.8
D
0.4
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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GE Medical Systems
Siemens Multix
Tomographic Adjustments,
Alignment and Calibration
continued
Tomo Braking
3.
1. Set the layer height to 25 cm.
4. At the generator, turn on SS.
2. Press the 25°/0.8 tomo key.
5.
Begin tomo and check tomo timing on the oscilloscope. The exposure timing should be centered in the tomo time.
6.
Verify that the generator exposure time equals the selected tomo time (0.8 sec).
3.
Start tomo.
4.
Adjust R7 on D31 for smooth braking.
Note
During this procedure, the Tube Support Arm switches S26 and S27 (swivel angle safety) must not operate.
Set the generator for 60 kV / 40 mAs.
Note
If you are connecting a TO or a T5s, you will need to increase the lead time on D30 (using x5) for 25°/0.8 sec and for 8°/0.4 by 2°.
Note
No lead time adjustments are needed for 40°/2 sec, 30°/2 sec, 30°/3.2 sec.
Lead Time Adjustment 1. Insert channel 1 of the scope with a radiation detector measuring probe into the beam and set the collimator to the size of the probe. Connect channel 2 to D30.Mp7. OR Use a Keithly kV meter on the tabletop. Be sure to the collimator to expose the detector during the entire sweep. OR Use the kV test point on D520. (kVIST) Set +1 V = 20 kV.
7. Disconnect scope and probe.
2. Press the 25°/0.8 tomo key. Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Tomographic Adjustments,
continued
Tomo Exposure Checks
10. Repeat this test with different sweep angles. The image should appear similar to diagram 2.
Pinhole Test Note
For this procedure, you will need a copper sheet with a small hole drilled in the center, or something similar.
•
If you see a string of pearls (diagram 3), check for mechanical smoothness of all components.
•
If the line has a slight bend (diagram 4), check for mechanical interference during the time sweep.
•
Adjust the end stop switches if the line is off.
1. Load cassette into the Bucky. 2.
Place the copper sheet on the table top.
3.
Collimate to the size of the small hole.
4. Make an exposure in RAD mode. Experiment with techniques to create a dark, but not overexposed, dot on the film. Start with 40 kV and 20 mAs. 5.
Alignment and Calibration
Leave the cassette and copper sheet in place.
1
2
6. Switch to tomo mode. Fulcrum height: 10-20 cm. 7. Make a tomo exposure. Again, experiment with techniques. 8. Develop the film. The image will appear similar to diagram 1. 9.
3
4
The pinhole should be centered, and the stripe should be smooth. Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Tomographic Adjustments, Tomo Exposure Checks,
Alignment and Calibration
continued
continued
Fulcrum Height Test Note
For this procedure, you will need a foam block, or something similar of a known thickness, about 10 cm thick. The material must not be radio opaque.
1. Load cassette into the Bucky. 2.
Place a coin such as a quarter on the foam block.
3. Switch to tomo mode. Fulcrum height should equal block height, about 10 cm. 4. Make a tomo exposure. Again, experiment with techniques. 5. Develop the film. You should see the coin clearly on the film.
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Alignment and Calibration
Iontomat Setup Select a topic:
Getting Started
Required Materials
Iontomat Cables
Getting Started
1.
System Checks
Required Materials For this procedure, you will need wiring diagrams for:
Note
• Iontomat selection • Generator • Basic Unit • Screen PROM
• Oscilloscope • Standard toolkit
If the Iontomat is having sporadic problems with switching times and operation, verify that the cables are run at least 10 cm from any power or signal cables (such as in the same duct or wireway). Verify also that there are no loops in the cables.
1.
Insert Iontomat K2 connector into M46-D1.K2A. Click here for location.
2.
If your unit has a KK interface and unit-based dominant selection, you can display/turn off the dominant indicator on the generator. See wiring diagram X1458-1*1 for more information.
You will also need these tools: • Digital multimeter
Verify that all installed Iontomat cables are labeled with destinations, and that they run from the Operator’s Console to the Generator. Click here for location.
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Iontomat Setup, Getting Started,
Siemens Multix
Alignment and Calibration
continued
continued
Workstation Programming (if needed)
2.
Install D52 into N11.
3.
Device and examination station selection: Point
A-E
G1-G5
F
Tube I
G
Tube II
A-C (Device 1, 2, and 3)
Tube I
D-E (Device 4 and 5)
Tube II
Note 1. On D52, solder in jumpers as follows: For operation on:
Selection
If not all plugs G1-G5 are used, the non-occupied exam stations on D52 must be programmed to F, Tube 1. A
Solder these jumpers:
G1
I and H
G2
L and K
G3
N and M
G4
O and P
G5
S and R
J27
B C J13 J18
F
D
G
E
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Iontomat Setup, Getting Started,
Siemens Multix
Alignment and Calibration
continued
Programming Exposure Sensitivity
continued
Programming Voltage Response Correction Curves
1. On D3, perform the proper step: a. With a non-film-screen PROM, connect U with 2, and connect D with 4.
At the customer’s request, sensitivity can be adjusted for compression cone (on spot film device only) operation by -1 or -2 exposure points. 1.
On D9, install a jumper at T1 or T2, respectively.
2.
Install D9 into N11.
b. With a film-screen PROM, assign curves 1-4 to the screen types or technique buttons in use: H, U, and D. 2.
Install D3 into N11. Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Iontomat Setup, Getting Started,
Siemens Multix
Alignment and Calibration
continued
continued
Programming Basic Sensitivity
On D2, you can adjust the sensitivities to customer requirements: • Sensitivities can be programmed in half steps (using an additional jumper in the 1/2 row) from 4.0 to 27.5. • Each workstation (A-F) can be programmed independently. The table bucky is usually B. The Wall Stand is usually C. • Each technique (U, H, and D) can be programmed independently for each workstation. Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Iontomat Setup,
Siemens Multix
Alignment and Calibration
continued
System Checks
Ground Fault Check
Select a topic:
1.
Ground Fault Check Hum Voltage Check Drift Measurement Prep
2. Connect DVM to ground and OVL. Resistance should be infinite. If not, check:
Drift Check with SS Off Drift Check with SS On Iontomat Time Limit Shutoff Test Film Density Check
Disconnect the black jumper between K3 (ground) and K2.OVL.
3.
•
JK cables
•
Iontomat circuit shorts
•
Ion chamber shorts to the Bucky (use electrical tape around the chamber edges)
•
Iontomat junction boxes
For a TV system connected to the generator, perform a separate fault check. a. Disconnect the BAS connector at the monitor. (BAS is a German name for Composite Video.) b. Disconnect remote control connector and power supply cable at the central TV control unit.
4.
Alignment & Calibration
Component Locations
Error Codes
Reconnect K3.
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GE Medical Systems
Iontomat Setup, System Checks,
Siemens Multix
Alignment and Calibration
continued 3.
continued
Make sure test switch S3 is in normal (2) position:
Hum Voltage Check
•
PY30: D17
1. With system power off, pull out D9 and connect to extender.
•
PY50: D517
2.
Set up scope: •
50 mVAC and 5 ms per division
•
channel 1: D9.B14 (+15V)
•
channel 2: D9.Z14 (-15V)
3. Turn on the generator.
4.
Turn the generator on, allow 5 minutes to warm up.
5.
Select 81 kV, Iontomat, and central measuring field.
6.
On board D2 (see Programming Basic Sensitivity), install a jumper at 10. Verify that the LED on D3 displays 10 (binary code).
7.
Perform these checks for all connected detectors and selectable measuring chambers. These are selectable from the Operator’s Console.
4. With S27 on, hum must not exceed 50 mV. 5. Turn off the generator.
Drift Check with SS Off
6. Remove the extender and reinstall D9 into N11.
1. Turn SS off (S2):
Drift Measurement Prep
•
PY30: D17
1.
•
PY50: D517
2.
Scope connections: •
PY30: D20, MAS TP and ground at 0Vs
•
PY50: D520, MAS TP and ground at 0Vs
Set channel 1 to 100 mV (internal triggering) and 200 ms (zero line centered) per division.
2.
Make an exposure and watch the scope. •
signal drift cannot exceed ±250 mV in 1 second
•
hum voltage cannot exceed 200 mV Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Iontomat Setup, System Checks,
Siemens Multix
continued •
continued
Drift Check with SS On 1.
PY30: D17
•
PY50: D517
PY50: D517
5.
At the Operator’s Console, select Iontomat (U/H/D) and Max kV.
6.
With S27 on, check the scope. After:
Turn SS on (S2): •
Alignment and Calibration
•
PY30: 8.0 sec
2. Close the collimator and mask with lead
•
PY50: 3.2 sec
3. Make exposure at 60, 81, and 96 kV (80%, 2 sec) and watch the scope. Drift and hum should be very similar to with SS off.
the time limit switching should occur, and the Limit display on the Operator’s Console control panel should light up.
Iontomat Time Limit
7. Press the [LIMIT] button.
1.
Note
2.
Scope connections: •
PY30: D20, MAS TP and ground at 0Vs
•
PY50: D520, MAS TP and ground at 0Vs
Set channel 1 to trigger on ON and OFF, and 1 sec per division.
3. Turn the generator on. 4.
If a time limit adjustment is required, refer to Generator Service Instructions under the topic Read justment When Replacing Components, board D517.
8. Turn the generator off. 9. Disconnect the scope. 10. Turn SS on.
Turn SS off (S2): •
PY30: D17 Cont i nued on ne xt page
Alignment & Calibration
Component Locations
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GE Medical Systems
Iontomat Setup, System Checks,
Siemens Multix
Alignment and Calibration
continued 3.
continued
Shutoff Test On board D2 (see Programming Basic Sensitivity), a jumper is still installed at 10. Verify that the LED on D3 displays 10. When programmed for 81 kV, the Iontomat must immediately shut off after an exposure, with direct radiation onto the measuring chamber.
Verify measuring chamber assignments and functions: S36
Light Localizer Collimation to
S27
Shutoff Time long short
1. Turn the generator on.
long
2.
Turn SS off:
short
•
PY30: D17
long
•
PY50: D517
short
4.
Turn SS on.
Cont i nued on ne xt page
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Component Locations
Error Codes
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GE Medical Systems
Iontomat Setup, System Checks,
Siemens Multix
Alignment and Calibration
continued
continued
Film Density Check 1.
For each Operator’s Console and screen, make an exposure at 81 kV with 20 cm of water.
2. Confer with customer regarding optical density of each test film. Reprogram board D2 (see Programming Basic Sensitivity) to customer requirements. Note
If the customer has no specific requirements, set the net optical density (D N, density 1 over film fog) to 1. Usually 1.3-1.5 OD (B+F).
3. Turn the generator off.
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GE Medical Systems
Siemens Multix
Alignment and Calibration
Overhead Support 3D-III Setup Select a topic:
6.
Set the template on the detent cam, allowing the two allen grub screws to pass through the template’s rectangular cutout marked with two holes, oriented as shown above.
7.
Back the two allen grub screws out slightly, then shift the cam and template to align the right edge of the template with the pencil mark.
8.
Tighten the two allen grub screws and remove the template.
9.
Telescope forward until it hits the detent.
Transverse Detent Longitudinal Detent Installing SID Signal Generators Setting the Horizontal SID Signal Generators Setting the Vertical SID Signal Generators
Transverse Detent 1.
Power up the system.
2. Swing the tube assembly out to point toward Wall Stand. 3. Turn on the light localizer. Use the movement keys to direct the beam to the center of the wall stand. 4.
Hold the alignment template (shown below) at a right angle to the rail and rollers and mark the rail with a pencil.
10. Turn on the light localizer and verify that the light cross is centered transversely (not necessarily longitudinally) on the Wall Stand. 11. Stick the red arrow sticker on the telescope cover, and the two circle stickers on the transverse rail and on the cable cover to mark the proper position.
SIEMENS
5. Telescope away from the wall stand about 50 cm. Cont i nued on ne xt page
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GE Medical Systems
Siemens Multix
Overhead Support 3D-III Setup,
Alignment and Calibration
continued
Longitudinal Detent
Installing SID Signal Generators
1. Press the [<-|||||->] key and adjust one SID. Use a tape measure to help you.
1.
Unscrew and remove the longitudinal rail front cover.
2.
Locate the five encoder signal generator boxes, in the telescope accessories bag.
3.
Turn back the allen screw on each of the boxes.
4.
Install the five boxes in the front rail. The three large fields (blank, C2, and C1) should be nearest the narrow edge of the rail.
2. Hold the alignment template at a right angle to the rail and rollers and mark the rail with a pencil. 3. Telescope sideways about 50 cm. 4.
Set the template on the detent cam, allowing the two allen grub screws to pass through the template’s rectangular cutout marked with one hole, oriented as before.
5. Back the two allen grub screws out slightly, then shift the cam and template to align the right edge of the template with the pencil mark. 6. Tighten the two allen grub screws and remove the template. 7. Telescope longitudinally until it hits the detent. 8.
Verify the SID with a tape measure.
5. Install the rail cover. 6.
Slide the five boxes so they are as far as possible from the Wall Stand.
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Overhead Support 3D-III Setup,
Alignment and Calibration
continued
Setting the Horizontal SID Signal Generators Note
If the Wall Stand is in the transverse direction, adjust the SID signal generators to the transverse track.
View of SID
Position
LEDs lit on D5
SID #1
POS
SID #2
POS
1. Obtain the list of SIDs from customer. 2.
Turn the system on.
3. Insert the cassette into the Wall Stand.
C1
4. Swing the tube assembly out to point toward wall stand. SID #3
5. Using a tape measure, measure the shortest SID.
POS C2
6. Remove the two foils from the SID encoder using the table. 7. Use the adjusting template to shift the SID signal generator so that the LEDs in the SID signal generator and the H3 lamp on the telescope light up.
SID #4
POS C1 C2
8. Shift the stand slightly to access the SID signal generator’s allen screw, and tighten it into place.
Wall Stand (vertical beam path)
9. Repeat steps 4-8 for the remaining SIDs.
POS BWS
10. If any SID signal encoders are unused, push them to the rail end and tighten them into place. Cont i nued on ne xt page
Alignment & Calibration
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GE Medical Systems
Siemens Multix
Overhead Support 3D-III Setup,
Alignment and Calibration
continued
Setting the Vertical SID Signal Generators Note
This is for tilting bucky on wall stand, if applicable.
1.
Turn the system on.
2.
Swing the table out.
3. Insert the cassette into the Wall Stand. 4. Center the tube assembly over the table to the cassette. 5. Code the SID signal generator for Wall Stand (see previous page table). 6. Use the adjusting template to shift the SID signal generator so that the LEDs POS and RWG on D5 and the H3 lamp on the telescope all light up. 7. Shift the telescoping column slightly to access the SID signal generator’s allen screw, and tighten it into place. Note
The mechanical detent can also be attached in this position, if desired.
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Alignment and Calibration
Tube Seasoning Required Materials
8. Move switch S1 on D516 to TEST ON.
For this procedure, you will need these tools:
9.
• Digital multimeter
10. Leave fluoro on at 110 kV for 8 minutes.
• Oscilloscope
11. Turn R60 on D516 CCW until it stops (about 50 kV).
Procedure
12. Move switch S1 on D516 to TEST OFF.
1. Turn the generator off.
Important! In the case of two tube assemblies, do not proceed until after start-up of the second tube assembly.
2. Connect scope channel 1 to D520 at test point kV IST and 0VP. (1 V = 20 kV)
Use R60 on D516 to slowly adjust to 110 kV.
13. Turn off the generator.
3.
Set meter to 20 mA range, and connect it to D520 mAs sockets.
4.
If there is no fluoro remote control:
a. Remove D517.D14 to D517.B14 jumper.
a. Turn the generator off and install D517 board onto extension.
b. Install the D517.D14 jumper.
b. Remove the D517.D14 jumper.
14. If there is no fluoro remote control:
c. Remove D517 board from extension and reinstall in N11.
c. Jumper D517.D14 to D517.B14 on the PC board side (X1564-20/1). 5. Turn R60 on D516 CCW until it stops (about 50 kV). 6. Turn on the generator. 7.
Turn SS on.
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GE Medical Systems
Siemens Multix
Alignment and Calibration
Filament Current Adjustment Required Materials For this procedure, you will need these tools: • Digital mul multimeter • Oscilloscope
Procedure
6. Make Make an exposur exposure e at small small focu focus s (20 (20 kW), kW), 73 73 kV, kV, 20 mAs, at short time. The scope should read 275 mA ± 20 mA. Check with 125 kV (reduced current 160 mA). If curve deviation is excessive, set the mean value to 77 kV. kV. If an adjustment is required on D512, use R11 for AP1 and R21 for AP2.
2. Conn Connec ectt sco scope pe chan channe nell 2 to mAIST. Set trigger to on ON and OFF. OFF. 1 V and 20ms per division. division .
7. Make Make an exposur exposure e at small small focu focus s (30 (30 kW), kW), 66 66 kV, kV, 20 mAs, at short time. The scope should read 450 mA ± 20 mA. Check with 125 kV (reduced current 160 mA). If curve deviation is excessive, set the mean value to 77 kV. kV. If an adjustment is required on D512, use R11 for AP1 and R21 for AP2.
Note
8.
1. Conn Connec ectt sco scope pe chan channe nell 1 to D520 D520 at at test point kV IST and 0VP.
Twist the scope probe cables to avoid picking up unwanted signals.
3. Set Set mete meterr to mAs mAs range range,, and and conne connect ct it to to D520 D520 mAs mAs sockets. 4. Turn urn on on the the gene generrato ator. 5.
Set switch switch S3 on on D517 D517 to to posit position ion 1 to to enable enable a test test time of 0.1 seconds.
Alignment & Calibration
Component Locations
Error Codes
Make Make an exposu exposure re at at large large focus focus (50 (50 kW), kW), 73 kV kV, 20 mAs, at short time. The scope should read 680 mA ± 20 mA. Check with 125 kV (reduced current 400 mA). If curve deviation is excessive, set the mean value to 77 kV. kV. If an adjustment is required on D512, use R12 for AP1 and R22 for AP2.
Note
Tube currents are reduced with power output reduction.
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GE Medical Systems
Siemens Multix
Alignment and Calibration
Rotor Control Adjustment No adjustments are required on a routine basis. However, for service or troubleshooting, some adjustments can be made.
3. Set Set met meter er to to mAs mAs range range,, and and conne connect ct it to D520 D520 mAs mAs sockets. 4. Start Start the the expos exposure ure,, and and look look at the graph: graph:
Prep Time Adjust prep time to 1.2 seconds. Adjust R33 on D517 at J4.7. Measure on D520. Max
Anode Braking Time
kVIST
Measure with scope at D514.Z14. Toggle Toggle S27 about abo ut halfway on, briefly, and watch scope. The dip should be 1.8-2.0 seconds. Adjust braking time to 6 seconds. seconds. Adjust R47 R47 on D517 at Z26.
Min
5. If an an adju adjust stme ment nt is is requi require red, d, use use R62 R62 on on D516. D516.
mAs
Rotor Accelerate Time
1. Set Set met meter er to mAs, mAs, conn connec ectt to to D520 D520 mAs mAs sockets.
Adjust M4 accelerate time to 425 Hz at D514 test point M4. Adjust R37 on D514. Measure on D520.
2.
Run an exposu exposure re at 81 kV kV, 80 mAs, mAs, short short time. time. Meter Meter should read 80 mAs.
kVIST
3.
Run an expos exposure ure at at 40 kV, kV, 2 mAs, mAs, short short time time.. Meter Meter should read 2.31 mAs.
4.
Run an an exposu exposure re at 117 117 kV, kV, 2 mAs, mAs, short short time. time. Meter Meter should read 2.69 mAs.
5.
If any reading readings s are are off off by more more than than 4%, 4%, adjus adjustt R3 R3 on D9.
1.
Set up an exposu exposure re at 73 kV kV, 50 mAs, mAs, at short short time. time.
2.
Conn onnect scope to D520 D520 at at test point kV IST. Set trigger to on ON and OFF. OFF. 1 V and 10ms per division.
Alignment & Calibration
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Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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GE Medical Systems
Siemens Multix
Alignment and Calibration
PBL System Adjustment Notes While in PBL adjustment mode, the digital collimator displays shows the information required to make the PBL system adjustments and all other digital collimator functions are locked out. Adjustment Step
Indicated Value
When making an adjustment with the cassette (18 x 24 only), verify the center marks for the chuck chu ck and cassette are aligned. To initiate the adjustment program: 1. On D5, D5, set set swit switch ch S1 to posit positio ion n 1. 1. D5 D5 v24 v24 lights up, and switch S2 stops at 2. 2.
FILTER
READY
1
CALL SERVICE
Pull Pull out the casset cassette te tray tray to to the stop, stop, then then full fully y insert insert it again.
3. Pres Press s the the Buck Bucky y but butto ton n [<| [<||| |||| ||>] >]..
1 2 3 + -
MEMORY
You can step through the 14 adjustment steps using the [FILTER] key. After completing an adjustment step, press the [MEMORY] key. key. If the data d ata is accepted, the READY display lights for 5 seconds, the SID display shows 0, and the adjustment step display moves to the next step. If the data is rejected, the CALL SERVICE display lights, and the SID display shows 1. Readjust and try again.
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Cont i i nued nued on ne xt page
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GE Medical Systems
PBL System,
Siemens Multix
Alignment and Calibration
continued
Adjustment Steps
Step 2: First Horizontal SID Encoder
Step 1: Vertical SID Encoder on 3D-III Stand
1.
Point the tube toward the wall stand.
1. Set the vertical beam direction above the table.
2.
Pull out the table cassette tray to the stop.
2. Select medium (tomo) table height.
3.
Pull out the Wall Stand cassette tray to the stop, then insert a cassette if desired.
4.
Move the tube to the first SID position (e.g. 102 cm).
3.
Set the focus to table top distance to 109 cm, using a tape measure.
4. Insert a cassette if desired, then insert the cassette tray. 5.
Use [+] and [-] to set the display to
115.
6.
Press the [MEMORY] key to accept this entry.
Note
The lamp in the telescope carriage must light up.
5.
Use a tape measure to measure the SID.
6.
Insert the wall stand cassette tray.
7.
Use [+] and [-] to set the display to
8.
Press the [MEMORY] key to accept this entry.
102.
Cont i nued on ne xt page
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Error Codes
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GE Medical Systems
PBL System,
Siemens Multix
continued
Adjustment Steps,
Step 4: Third Horizontal SID Encoder
continued
Step 3: Second Horizontal SID Encoder
1.
1.
Note
Move the tube to the second SID position (e.g. 115 cm).
Note 2.
Alignment and Calibration
The lamp in the tube carriage must light up.
Pull out the Wall Stand cassette tray.
3. Use a tape measure to measure the SID. 4. Insert the wall stand cassette tray. 5.
Use [+] and [-] to set the display to
6.
Press the [MEMORY] key to accept this entry.
Move the tube to the third SID position (e.g. 122 cm). The lamp in the tube carriage must light up.
2.
Pull out the Wall Stand cassette tray.
3.
Use a tape measure to measure the SID.
4.
Insert the wall stand cassette tray.
5.
Use [+] and [-] to set the display to
6.
Press the [MEMORY] key to accept this entry.
122.
115.
Cont i nued on ne xt page
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GE Medical Systems
PBL System,
Siemens Multix
continued
Adjustment Steps,
continued
Step 5: Fourth Horizontal SID Encoder 1.
Move the tube to the fourth SID position (e.g. 183 cm).
Note 2.
Alignment and Calibration
The lamp in the tube carriage must light up.
Step 6: Vertical SID Encoder Vertically Adjustable Wall Stand Note 1.
Pull out the Wall Stand cassette tray to the stop.
2.
Move the Bucky cabinet to the horizontal position, and move it to the lower stop.
3.
Set the vertical beam direction and center it above the Bucky cabinet.
4.
Set the SID to 100 cm, using a tape measure.
5.
Insert a cassette if desired, then insert the cassette tray.
6.
Use [+] and [-] to set the display to
7.
Press the [MEMORY] key to accept this entry.
Pull out the Wall Stand cassette tray.
3. Use a tape measure to measure the SID. 4. Insert the wall stand cassette tray. 5.
Use [+] and [-] to set the display to
183.
6.
Press the [MEMORY] key to accept this entry.
This is needed only with a tilting wall bucky.
100.
Cont i nued on ne xt page
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GE Medical Systems
PBL System,
Siemens Multix
Alignment and Calibration
continued
Adjustment Steps,
Step 8: Cassette Length Sensing in Multix Table
continued
Step 7: Cassette Width Sensing in Multix Table
1. Insert the tray fully.
1. Load the 18 x 24 cm cassette transversely. Insert fully.
2.
Use [+] and [-] to set the display to
3.
Press the [MEMORY] key to accept this entry.
24.
2.
Use [+] and [-] to set the display to
3.
Press the [MEMORY] key to accept this entry.
4.
The system beeps.
5.
Pull out the tray.
18.
4. The system beeps. 5. Pull out the tray.
Cont i nued on ne xt page
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Error Codes
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GE Medical Systems
PBL System,
Siemens Multix
Alignment and Calibration
continued
Adjustment Steps,
Step 10: Cassette Length Sensing in Wall Stand
continued
Step 9: Cassette Width Sensing in Wall Stand
1. Insert the tray fully.
Note
2.
Use [+] and [-] to set the display to
3.
Press the [MEMORY] key to accept this entry.
If there is no Bucky Wall Stand, use the [FILTER] key to skip to step 12.
1. Set the horizontal beam direction and center it on the Bucky wall stand. 2. Load the 18 x 24 cm cassette transversely. Insert fully. 3.
Use [+] and [-] to set the display to
4.
Press the [MEMORY] key to accept this entry.
5.
The system beeps.
6.
Pull out the tray.
18.
4. The system beeps. 5. Pull out the tray.
24.
Cont i nued on ne xt page
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Error Codes
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GE Medical Systems
PBL System,
Siemens Multix
continued
Adjustment Steps,
continued
Step 12: Generator Selection: Table Note
Step 11: Unassigned Note
Alignment and Calibration
This adjustment step is not used. Use the [FILTER] key to skip to step 12.
If there is no table available, use the [FILTER] key to skip to step 13.
1.
Use [+] and [-] to set the display to the generator programmed at the workstation, 1, 2, or 3.
2.
Press the [MEMORY] key to accept this entry.
Step 13: Generator Selection: Wall Stand Note 1.
Use [+] and [-] to set the display to the generator programmed at the workstation, 1, 2, or 3.
Note 2.
If there is no Wall Stand available, use the [FILTER] key to skip to step 14.
You may NOT use the same setting as in step 12.
Press the [MEMORY] key to accept this entry.
Step 14: Grid Run-Up Time
Alignment & Calibration
Component Locations
Error Codes
1.
Use [+] and [-] to set the display to 2.
2.
Press the [MEMORY] key to accept this entry.
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GE Medical Systems
Siemens Multix
Component Locations
COMPONENT LOCATIONS X-ray Generation
System Overview
Collimator Assembly Generator Front Overview
Patient Positioning Multix U Table Multix U Table D1 Fuse Board
Multix CP Table Multix CP Table Electronics Multix CP Table Track and Foot Pedal for Camera Transverse
5V Regulator and Resistors R13 and R14 D19 Service Board Photo Timer and Unit Interface (KK) D2 Density Correction Board Generator Card Rack Tilt
Generator Rear Overview Operator’s Console Inside the Operator’s Console
Tube Hanger Wall Stand Open Wall Stand Door
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Component Locations
System Overview Operator’s Console Generator Wall Stand
Tube Hanger Collimator Assembly Multix U Table
Alignment & Calibration
Component Locations
Error Codes
Multix CP Table
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GE Medical Systems
Siemens Multix
Component Locations
Tube Hanger H anger
Remove screws to access components
M1 Assembly D25 Board SID Encoder Board Main Tube Support Tension Adjustment SID Encoder Wheel Return to System Overview Overvi ew
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Component Locations
Collimator Assembly DC Stepper Motors D12 Controller for Display Panel
D11 Power Board Fiber Optic Connections
Search Run S3 (Behind measuring tape) Search Run S2 (on right side of collimator)
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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Return to System Overview Overvi ew
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GE Medical Systems
Siemens Multix
Component Locations
Multix U Table Multix U Table D1 Fuse Board
Service Switches: S1 Adjustment Mode S2 Service Mode
D5 Board
Bucky Film Tray
D4 Board
Card Rack On/Off Switch
Remove front cover to access M9 card rack
Return to System Overview Overvi ew
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Component Locations
Multix U Table D1 Fuse Board
Line Matching Jumpers
Return to Multix U Table Overview Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Component Locations
Multix CP Table Multix CP Table Track and Foot Pedal for Camera Transverse
Table Lift Motor
Tabletop Lock Release E-Stop Table Elevation
Multix CP Table Electronics MIO
Table Fulcrum
SID Encoder Assembly
Bucky Film Tray
S13 and S14 M4 Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
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GE Medical Systems
Siemens Multix
Component Locations
Multix CP Table Electronics Safety Contactors Drive Motor and Encoder
D31
Return to Multix CP Table Overview
M4 D30 Table Controls M9, PBL System
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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Return to System Overview
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Notes
GE Medical Systems
Siemens Multix
Component Locations
Multix CP Table Track and Foot Pedal for Camera Transverse
Tube Stand Transverse Tracks Foot Pedal
Return to Multix CP Table Overview Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
Operator’s Console Fluoro Display Tube Status Workstation (n/a for rad rooms) X-Ray On Selection Display
Exposure Control
Alignment & Calibration
Patient Size Technique Adjust On/Off
Component Locations
Error Codes
Organ Programming Field
Radiographic Display
Density Correction Display
Iontomat Ops Display
Technique Tube Load Selection Selections
Limit Reset
Density Correct ±4
Tube Load Computer
Focal Spot Selection
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Pause Time Display for Tube Load Calc
Troubleshooting
Return to System Overview
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
Inside the Operator’s Console Tube Load Computer
Click here for D19 Service Board Installed in Card Rack
S36
Alignment & Calibration
Component Locations
D19 Service Board in storage location
Error Codes
Return to Operator’s Console
D35 Board
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Return to System Overview
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
Generator Front Overview Remove Cover for access to 5V Regulator and Resistors R13 and R14
D520 Measurement Board Inverter Modules
D19 Service Board is installed here
D2 Density Correction Board
Generator Card Rack
Generator Card Rack Tilt: Thumbscrew and Red Safety Stop Wire
Swing out for access to Photo Timer and Unit Interface (KK) Auxiliary Equipment Fuses
LS Relay D518 Board
Line Fuses
Transformer T2
Line Connection
Click here for Generator Rear Overview
Ground and Signal Buss
Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
5V Regulator and Resistors R13 and R14
R13 Resistor
R14 Resistor Remove Cover for access to 5V Regulator and Resistors R13 and R14
Resistor service note is on Schematic X1564-24
J1 +5 V Regulator Return to Generator Front Overview Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
D19 Service Board
D19 Slot MAS Start/Stop Test Point
Click here for D19 Service Board Stored Inside the Operator’s Console Return to Generator Front Overview Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
Photo Timer and Unit Interface (KK)
KK Interface Board D186 See schematic X1564-32
Swing out for access to Photo Timer and Unit Interface (KK)
Return to Generator Front Overview
M46
Return to System Overview
D1
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
D2 Density Correction Board
Return to Generator Front Overview Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
Generator Card Rack Tilt Step 1: Pull out K1A, K1B, K1C, K1D, K1E, and D520
Step 3: Tip rack forward slightly, then reach behind and disconnect these plugs
Step 4: Tip rack fully forward DANGER: This is not recommended if the Generator is not bolted down. The cabinet could tip, causing injury and/or damage.
Step 2: Loosen thumb screws on each side NOTE: Red Safety Wire prevents Card Rack from falling
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Return to Generator Front Overview Return to System Overview
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
Generator Rear Overview Inverter Modules
5V Regulator Wire Wrap Access Auto Short Circuit Extinguisher KS Relay (changes response frequency of inverter)
Zener Diodes +15, -15, +5
Line Contactor
N11 Card Frame
Tube Unit Connector Block
Return to Generator Front Overview Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
Wall Stand
Foot Pedal unlocks vertical height adjustment
Pull out Film Tray
Pull on catches to Open Wall Stand Door for access to Ion Chamber and Grid Drive Circuit
Remove foot panel to access cable interconnect plugs Iontomat Control Bucky Control Return to System Overview
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Component Locations
Open Wall Stand Door Remove two Allens and squeeze the lever to access Ion Chamber
Remove two standard screws to access Grid Drive Circuit S4 Cassette Sizing Encoders Grid Drive Motor S3 D16 and D17 Cassette Size Boards
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Return to Wall Stand Overview Return to System Overview
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Error Codes
ERROR CODES Patient Positioning Multix CPH Errors Multix U Errors
X-ray Generation Collimator Errors
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Error Codes
Collimator Errors In the case of a collimator error, check the V185 display on the D12 board for an error code. Code
Description
0
Normal operating state
1
Width diaphragm error Check AM2 engine, S2 switch, X1 D12 connector, D12 power driver
2
Height diaphragm error Check AM3 engine, S3 switch, X1 D12 connector, D12 power driver
3
Iris diaphragm error Check AM4 engine, S4 switch, X7 D12 connector, D12 power driver
4
(Not Used)
5
Serial data transmit error Check FOC, four-wire line, jumper four-wire line D11X2.3 - X2.6, D11X2 - D12X1 connection
6
Bad data received (ex. unknown minutes)
7
Illegal FFA received (FFA of 35 - 400 cm)
8
ROM error
9
RAM error
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Error Codes
Multix CPH Errors In the case of a Multix CPH error, check the display on the D5 board for an error code.
Code 15
Code
Description
01
Adjustments are not yet complete.
02
(Not used)
03
Data transmission error. Check fiberoptic sockets at central electronics and at collimator, check collimator voltage supply, verify LEDs V1 and V2 on D3 for flashing (indicates data transfer)
18
04
(Not used)
05
Defective D5 board. Replace, then perform adjustments.
06
19-21 22 23 24
Improper fiberoptic cable from central electronics and collimator. (Not used) Defective collimator D11 board. (Not used) Cassette insertion error. Cassette width / height errors. Typically indicates a defective encoder or D16/D17 board.
25
07 08
16-17
Description
PBL requirements not met.
26
27-44
SID requires adjustment. If 3D-III is fully down, and all 9 LEDs on D5 do not light, replace the SID encoder. (Not used)
45
Wrong workstation selected. Redo final two adjustments.
46
Defective D101 board. Replace and reprogram.
11
47
(Not used)
12
48
Data transmission error. Check fiberoptics at central electronics and generator.
09 10
13-14
Alignment & Calibration
Defective collimator.
(Not used)
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Error Codes
Multix U Errors In the case of a Multix U error, check the J37 / J40 display on the D5 board for an error code. Code
Description
Code
Description
16
Bad data received from digital collimator
17
SID error at digital collimator
18
RAM / ROM error at digital collimator
01
Normal operating state
02
PBL system requires adjustment
03
Bad operating mode (BA selector switch)
21
Bad block index from digital collimator
04
(Not used)
22
Cassette reports table width error - recalibrate
05
RAM error
23
Cassette reports table height error - recalibrate
06
ROM error
24
Cassette reports RWS width error - recalibrate
07
E**2 PROM error
25
Cassette reports RWS height error - recalibrate
08
Cassette transmitter, table not initialized
26
Vertical SID outside limits
09
Cassette transmitter, wall stand not initialized
27
Horizontal SID outside limits
10
Digital collimator not ready
11
Width collimator error
12
Height collimator error
13
Image intensifier collimator error
14
Digital collimator filter error
15
Fiberoptic error at digital collimator
19 - 20
28 - 29
(Not used)
(Not used)
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Multix U Errors,
Siemens Multix
continued
In the case of a Multix U error, check the J37 / J40 display on the D5 board for an error code. Code
Description
30
Digital TB adjustment data can not be evaluated
31
Digital TB sent wrong adjustment mode
32
Digital TB sent wrong adjustment submode
33
Digital TB sent wrong adjustment number
34
Digital TB has not completed adjustment
35
Horizontal SID outside tolerance
36
0 or 2 cassettes inserted
37
Digital TB rotary angle is undefined
38
Table has bad rotary angle
39
Wall stand has bad rotary angle
40
Bad multiplier at SID for wall stand
41
Bad setup number at call-in
42-43-44
Error Codes
Code
Description
47
Subprocessor RAM error
48
Fiberoptic connection lost between generator and workstation
49
Connection lost between central electronics and subprocessor
(Not used)
45
Bad unit selection
46
2x time-out subprocessor (reset relay) Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Multix U Errors,
Siemens Multix
continued
In the case of a Multix U error involving the digital collimator, check the D5 board for an error code. Move S2 to service mode. Code
Code
Description
15
Calculation error on masked out field (mm)
16
Calculation error on tangent in collimator field
Description
0
(Not used)
1
Limit switch error on width collimator
2
Limit switch error on height collimator
3
Limit switch error on iris diaphragm
4
(Not used)
5
Fiberoptic conductor test timed out
6
Send error (send buffer register)
7
Receive error (checksum)
8
(Not used)
9
Bad index block in protocol
10
(Not used)
11
Calculation error on width collimator
12
Calculation error on height collimator
13
Bad mode in command byte #1
14
No stored data available
Alignment & Calibration
Error Codes
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Cont i nued on ne xt page
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Multix U Errors,
Siemens Multix
continued
In the case of a Multix U error involving the digital collimator, check the D5 board for an error code. Move S2 to service mode. Code
Code 32
Description Bad mode
Description
17
Bad collimator number
18
Limit error on width collimator
19
Limit error on height collimator
20
Limit error on iris diaphragm
21
Calculation of new tangent
22
SID limit error
23
Bad collimator number
24
Index width collimator outside limits
25
Index height collimator outside limits
26
Index iris diaphragm outside limits
27
(Not used)
28
Width collimator element error
29
Height collimator element error
30
Iris diaphragm element error
31
(Not used)
Alignment & Calibration
Error Codes
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
FUNCTIONAL CHECKS AND PROCEDURES Patient Positioning
X-ray Generation
Multix U
Exposure Timing Test Program
Column Movement Table Movement SID Display
With High Voltage Without High Voltage
Generator Power Supplies Inverters Getting Started Inverter Control (W1A/W1B) Check Main Inverter Check Without Tube Main Inverter Check With Tube Short Circuit Blanking Responds
Radiographic Circuit Rotor Runup and Braking Anode Runup Anode Braking Time
Tube Electrical Hookup Connections Polyphos 30 Connections Polyphos 50 Connections
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Exposure Timing Test Program With High Voltage Note
For this procedure, you will need an oscilloscope.
Caution
Run this test program on every tube. Check the initial load with the first exposure. 1.
On D520, scope channel 1: kVIST, 1 V = 20 kV. Set scale to 1 v/division and 50 ms/division.
2. On D520, scope channel 2: mAIST, 1 V = 100 mA. Set scale to 1 v/division and 0.5 s/division. 3.
Perform the following exposures S36
S27
Before next shot, wait
60 kV / 500 mAs
3 minutes
109 kV / 100 mAs
2 minutes
125 kV / 100 mAs
3 minutes
125 kV / 100 mAs
(final shot)
Note
If the scope does not indicate a falling load (after no more than 200 ms), stop the exposure immediately.
Power output reduction will reduce tube current. A tube surge will end the exposure, and may not indicate an error.
If an arc fault occurs at any time during the test program, rerun the program. If the fault recurs, replace the tube. See Tube Electrical Hookup for more information. Note
This procedure is similar in purpose to our run-in and stability test (without heat soak).
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Exposure Timing Test Program,
Functional Checks and Procedures
continued
Without High Voltage
2. Set S3 test time to 0 seconds.
Note
3.
For this procedure, you will need an oscilloscope.
Run this test program on every single tank. Check the initial load with the first exposure. 1. Turn SS off. On D517: •
S2 to position 2
•
V11 lights up
Note
Scope setup: •
Connect to D516.B14
•
1 V and 2 seconds per division, inverted
•
Triggered internally.
4. Perform the following exposures
S2 and S3 are in normal position when S2 is down and S3 is up, as shown here. Pinch together for a quick check before placing the cover back on the generator.
D517
S36 (20 kW) 70 kV / 100%
small
(30 kW) 66 kV / 100%
small
(50 kW) 73 kV / 100%
large
S27 Allow scope to run
Scope falls from 275 mA 450 mA 680 mA
S2
Caution S3
Note
Alignment & Calibration
Focus
Component Locations
Error Codes
If the scope does not indicate a falling load (after no more than 200 ms), stop the exposure immediately.
Power output reduction will reduce tube current. A tube surge will end the exposure, and may not indicate an error.
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Generator Power Supplies Note
For this procedure, you will need an oscilloscope and a digital multimeter.
1. The line contactor must pull up with an audible click. If not: •
Check fuses U1 - U5.
•
Check D518 for lit lamps and LEDs. (LED V17 is the only one that should NOT be lit.)
2. Make the following voltage measurements: Test Board D520 connections
Range
Adjustment
Ripple Voltages
+24V and 0V
+23.76 - +24.24V
R2 / D1B
~ 40 mV
+15V and 0VS
+14.85 - +15.15V
R2 / D1A
~ 15-20 mV
+5V and 0V S
diode D5 lit
none
~ 50 mV (square wave)
-15V and 0V S
-14.85 - -15.15V
R5 / D1A
~ 15-20 mV
-28V and 0V S
-27.72 - -28.28V
R5 / D1B
~ 10 mV
+TP24 and -TP24
+7.13 - +7.87V
R1 / D24
--
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Inverters Getting Started
Select a topic: Getting Started
DANGER
Inverter Control (W1A/W1B) Check Main Inverter Check Without Tube
Before beginning work on the inverters, disconnect voltage to them. Failure to do so can result in serious injury.
Main Inverter Check With Tube
1. Turn system power off.
Filament Inverter Check With Tube
2.
Turn line circuit breakers off, and verify with a meter at the incoming line that all voltage is removed.
3.
Disconnect the V7 and V5 DC connections to the rectifiers.
4. Insulate the connections.
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Inverters, continued Inverter Control (W1A/W1B) Check
Main Inverter Ignition Check
1.
6.
Loosen the nut and swing the inverter out.
Switch S27 to expose and watch the LEDs.
2. Turn on the generator.
•
3. Turn on SS. On D517, S2 moves to position 1, and V11 goes dark.
LEDs A and C (for TH1.A and TH2.A), and LEDs D and B (for TH1.B and TH2.B) light up briefly,
•
then go dark.
4.
Set test time to 0.1 sec. On D517, S3 moves to position 1.
Starter Ignition Check Important! Do not operate the ignition stages continuously for more than 30 seconds a time.
7.
Swing the inverter in and tighten the nut.
8.
Toggle SS off, then back on. On D517, S2 moves from position 1 to 2, and back to 1.
Note
Measure ignition pulses to D43 at D510.
5. Switch S27 to prep and watch the LEDs. •
LEDs A and C (for TH1.A and TH2.A) glow dimly for about a second (runup),
•
then blink at a rate of once per second (continued run).
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Inverters, continued Main Inverter Check Without Tube
8. Switch S27 on only once.
Use this check to find a suspected fault in either the tube or the main inverter (W1).
9.
1.
Reconnect the V7 and V5 DC connections to the rectifiers.
Important! Do not run the main inverter and filament inverter with no load. An open load will cause a short circuit in the inverter, blowing 200A fuse U1.
2.
The short circuit monitor shuts down after 10 ms. •
If there is no short circuit, the inverter is good. Finish this procedure, then Check the Tube.
•
If there is a short circuit (signalled by a knocking sound), verify the blanking time between knocks is 40 ms. If not, finish this procedure, then Check Short Circuit Blanking.
•
If the line fuses blow, finish this procedure, then Check Short Circuit Blanking and Deleting.
•
If the line fuses do not blow, but knocking occurs, this signifies a short circuit in the inverter.
At the tube, disconnect leads U and V.
3. Connect a choke coil (large black coil supplied with generator service kit, should be on site) to the leads. (If no part is available, make a coil by making 10 windings 80 mm across, using 3 meters of 6 mm2 wire.) 4. Connect a scope to 2F ][ and 0V on D520.
10. Turn the generator off. Wait two minutes for voltage to drop. V2 on D22 goes dark.
5. Turn the generator on.
11. Disconnect the V7 and V5 DC connections to the rectifiers.
6.
Set test time to 0.1 sec. On D517, S3 moves to position 1.
12. Insulate the connections.
Turn SS on. On D517, S2 moves to position 1, and V11 goes dark.
14. Reconnect the tube.
7.
Alignment & Calibration
Component Locations
Error Codes
13. Disconnect the choke cable.
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Cont i nued on ne xt page
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Inverters, continued Main Inverter Check With Tube
10. Turn off S27.
Check Short Circuit Blanking
11. Turn off generator.
1.
Scope setup:
12. Restore system to operating conditions.
•
Connect to 2Factual ][ on D520 and 0V
•
Triggering on Off and On
Important! Reconnect the V7 and V5 DC connections to the rectifiers.
2. Install D517 onto extension. 3.
Install a jumper on D517 at D10 (0V) and B6 (+15V).
4. On D22, disconnect and insulate connections A and B. 5.
Apply +5V from D520 to D22. Apply anode V1 and 0V from 0Vp on D520 to B on D22.
6. Turn the generator on. 7.
Set test time to 0.1 sec. On D517, S3 moves to position 2.
8. Turn SS on. On D517, S2 moves to position 1, and V11 goes dark. 9.
Switch S27 to release and remove +5V from D520 briefly. Inverter frequency is interrupted for 0.040 sec, and D22 V2 LED goes out. Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Inverters, continued Main Inverter Check With Tube,
continued
Check Short Circuit Blanking and Deleting
If the line fuses do not blow, but knocking occurs 1. Chec Check k the the TSE TSE wir wirin ing g in in W1A W1A and and W1B W1B..
1. Disc Disconn onnec ectt the the free freewh wheel eelin ing g diode diode V8. V8. If If a resistance measurement shows a defect, replace it.
•
Disc Discon onnec nectt resi resist stors ors R1 (6.2 (6.2 ohm) ohm).. If a resi resist stanc ance e measurement shows a defect, replace it.
2. Discon Disconnect nect the loading loading resist resistor or R8 R8 (0.2 (0.2 ohm). ohm). If If a resistance measurement shows a defect, replace it.
•
Disc Discon onne nect ct capa capaci cito tors rs C1 C1 (0.2 (0.22 2 uF). uF). If If a measurement shows a defect, replace it.
3. If eith either er resis resistan tance ce chec check k pas passe ses: s:
2.
If wiring wiring checks checks out, out, but but knockin knocking g cont continu inues: es:
a. Inst Instal alll D514 D514 ont onto o exte extens nsio ion. n.
•
Knoc Knocki king ng with with S27 S27 on on mea means ns W1B W1B is is bad bad..
b. Disc Discon onnec nectt B14 B14 stra strap p on D51 D514. 4.
•
Knoc Knocki king ng with with S27 S27 in in pre prep p mea means ns W1A is bad. bad. Verify frequency of rotating anode, step 3.
c. Inst Instal alll a jumper jumper on on D514 D514 at B14 B14 and and Z18. Z18. d. Set test test time time to 0.1 sec. sec. On On D517, D517, S3 move moves s to position 2.
3. Conn Connec ectt sco scope pe to to MP4 MP4 on D514 D514 and and 0V 0VP. 4.
Pull X1 X1 on D70.
e. Switch Switch S27 S27 to prep. prep. D510 D510 V11 V11 LED ligh lights ts red. red.
5. Turn urn gener generat ator or on and wait wait 5 minu minute tes. s.
f.
6.
Set frequenc frequency y to to 2.35 2.35 ± 0.03 0.03 ms (420 - 429 429 Hz) Hz) using using pot R37 on D514, then secure the pot with varnish.
7.
Inst nstall all X1 on D70. 70.
Turn urn the syst system em on. on.
g. Turn urn the the gene genera rato torr on. on. h. Switch Switch S27 S27 on. on. Proper Proper blankin blanking g can be heard heard as as a knocking inverter. i.
8. Chec Check k frequ frequen ency cy for for 2.98 2.98 - 3.35 3.35 ms ms (303 (303 - 335 335 Hz). Hz).
Turn urn off gene genera rato torr.
4. Rest Restor ore e syst system em to to opera operati ting ng con condi diti tion ons. s.
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Cont i i nued nued on ne xt page
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Inverters, continued Filament Inverter Check With Tube
•
Disc Discon onnec nectt res resis isto tors rs R10-R R10-R13 13 (33 ohm). ohm). If a resistance measurement shows a defect, replace it.
•
Disc Discon onnec nectt capa capaci cito tors rs C8-1 C8-11 1 (4. (4.7 7 uF). uF). If a measurement shows a defect, replace it.
Check the Tube 1.
At the tube, tube, disc disconne onnect ct cables cables 11, 12, 12, and 22.
2. Conn Connect ect a 24 V halo halogen gen col colli limat mator or bulb bulb betw between een:: •
11 and 12
•
22 and 12
3. Turn urn the the gene genera rato torr on. on.
2.
Check Check thyri thyristo storr V1-V4 V1-V4 with with diodes diodes resist resistanc ances es on D20.
3.
Check th the dr drive.
4. Sele Selec ct smal smalll focu focus s. 5. Turn Turn SS SS off off.. On D517, D517, S2 move moves s to to posit position ion 2, and and V11 lights up. 6. Chec Check k the the fil filam amen entt inv inver erte ter: r: •
If heati heating ng work works s pro proper perly ly,, the the tube tube is bad. bad.
•
If it shorts, but Short Circuit Blanking Responds,, perform these checks. Responds
•
If it shorts, but Short Circuit Blanking Does Not Respond, Fuse F4 Blows, Blows, perform these checks.
Short Circuit Blanking Responds 1. Chec Check k the the TSE TSE wir wirin ing g on on D20 D20::
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Cont i i nued nued on ne xt page
Theory
Troubleshooting
Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Inverters, continued Filament Inverter Check With Tube,
continued
Short Circuit Blanking Does Not Respond, Fuse F4 Blows 1. Inst Instal alll D51 D512 2 ont onto o ext exten ensi sion on.. 2. Turn urn the the gene genera rato torr on. on. 3. Inst Instal alll a jum jumper per on D512 D512 at B8 B8 and and B10 B10 for for 3 seconds.
4.
•
D512 V15 LED is red
•
Heat eating ing sto stop ps wit with h a cli clic ck sou sound nd
Turn the generato generatorr off off and and on on again again OR runup runup S27. S27. D512 V15 LED goes out. If fuse F4 blows and L3 goes dark, and heating does not stop with a click sound, filament short circuit blanking is bad. Verify DC wiring in M1 is OK; R7, L4, L 4, C4, C5, and V1.
5. At the tube, tube, discon disconnec nectt 22 ohm ohm resi resisto stors rs and and connect cables 11, 12, and 22.
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Multix U Column Movement
Table Movement
Check the brake buttons.
Press the crossed arrow key on the side of the table upward momentarily. You should hear a signal, and the brakes should release. Press it again; the table should lock into place.
Tension not to exceed
Brake
Use the UP/DOWN key to check the table height positions:
Transverse 25 N Vertical
•
590 mm
•
750 mm
•
915 mm
SID Display
Longitudinal 20 N Tube Rotate
The collimator SID display should change when adjusting the tube height or when adjusting the table height. Note
Alignment & Calibration
Component Locations
Error Codes
[STOP] blocks planigraphic movement and table height adjustment. Turn the key to the right 1/4 turn to clear the stop condition.
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Radiographic Circuit Install the D19 Service Board into the generator card rack. Perform the following actions, and monitor the lamps and LEDs on D19. Action
D19 Lamps and LEDs
SS on
(V11 on D517 goes off) (S2 on D517 in position 1)
S27 to Prep
V1, V2, V3 light immediately V4 lights after 1.2 sec delay
S27 to Release
V6, V8, V9 light up
SS off
(V11 on D517 light up) (S2 on D517 in position 2)
0.1 second test time on
(S3 on D517 in position 1) V14 lights up
S27 to After Exposure Shutdown
Alignment & Calibration
Component Locations
V15 lights up
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Rotor Runup and Braking Anode Runup Note
6. Anode should run up. If not:
For this procedure, you will need an oscilloscope and a digital multimeter.
1.
Turn SS off. S2 on D517 moves to position 2.
2.
Scope setup: •
Scope in differential mode
•
Channel 1: + at M1 on D514
•
Channel 2: - at M2 on D514
•
Triggering on ZB on D520
3. Perform a generator check: •
Generator on: V2 on D22 lights green
•
Generator off: V2 on D22 goes dark in 60 seconds
•
If you hear a crackling noise, use a scope to check D514 time. Set waveform duration to 2.35 ms ± 0.03 ms using pot R37. Inverter W1A may be defective and require replacement.
•
If there is no cracking noise, check fuse F3 on D518.
•
If there is a fault, ohm the stator windings: - H1.II and 0 = 4.6 (5.0 ohms) - H1.I and 0 = 9.5 (10.3 ohms) - H1.II and I = 14.1 (5.3 ohms) If the ohm values differ, the stator is defective. Replace the tube.
Anode Braking Time
4. Turn the generator on.
Measure with scope at D514.Z14. Toggle S27 about halfway on, briefly, and watch scope. The dip should be 1.8-2.0 seconds.
5. Switch S27 to release. BR1 on D19 Service Board lights up.
Adjust braking time to 6 seconds. Adjust R47 on D517 at Z26.
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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Notes
GE Medical Systems
Siemens Multix
Functional Checks and Procedures
Tube Electrical Hookup Select a topic:
Connect point on tube
Connections Polyphos 30 Connections Polyphos 50 Connections
Connections 1. Remove the connection coverplate and the strain relief for the primary and signal leads. 2. Guide the cables as directed by the install manual. 3.
Run the cable from the tube to the generator and secure with cable ties.
4.
Connect the ground wire to the central ground.
5.
Connect and tighten the following connections. Connect point on tube
Description
U1 (red) V1 (gray)
H1 Primary
0 (black) I (white) II (brown)
Rotating anode
Description
11 (violet) 22 (gray)* 12 (yellow)
Filament heater transformer primary connection
N (white / black) P (yellow / black) ground (red w/connector)
Current measurement + and - mA from N + P to ground
S (red) R+ (orange) R- (blue)
Signal Ground kVist + kVist -
- (violet / black) 1 (blue / black) 2 (gray / black) 3 (brown / black) 0 (orange / black)*
(not used) thermal oil pressure switch fan cable (24/29 VAC) 0 VAC load
ground (green / yellow)
ground cable
* Polyphos 50 only 6.
Connect the fan cables to the fans.
7.
Tighten all connections and install strain relief.
8.
Use cable ties to secure excess ground wire.
Cont i nued on ne xt page
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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Notes
GE Medical Systems
Siemens Multix
Tube Electrical Hookup,
continued
Polyphos 30 Connections
Note
W1
M31
K7
Run a ground wire from the table to the central ground in the generator .
2.
Connect primaries to generator rear at U1 and V1 on K7. (In the case of a second tube, connect primaries to generator rear at U1 and V1 on K8.)
3.
Pull the control cable through the generator from the rear, and connect at the front at K4 on M31. (In the case of a second control cable, connect at K5 on M31.)
4.
Run the primaries and control cables through the generator strain relief.
V2 M1
K4 K5 K8
M2
This is only needed at installation.
1. D22 D11
Functional Checks and Procedures
D18
Primary Lead Central Grounding Point Polyphos Cable 2 x 20m
6
D1
Alignment & Calibration
Component Locations
H1
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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Notes
GE Medical Systems
Siemens Multix
Tube Electrical Hookup,
continued
Polyphos 50 Connections
Note
M1
Run a ground wire from the table to the central ground in the generator .
2.
Connect primaries to generator rear at U1 and V1 on K7, and N on K1 (In the case of a second tube, connect primaries to generator rear at U1 and V1 on K8, and N on K1.)
3.
Pull the control cable through the generator from the rear, and connect at the front at K4 on M31. (In the case of a second control cable, connect at K5 on M31.)
4.
Run the primaries and control cables through the generator strain relief.
KG
K4 M31 M2 K1
This is only needed at installation.
1. W1A W1B
N11
K5
Functional Checks and Procedures
K7
Primary Lead Central Grounding Point Polyphos Cable 2 x 20m
6
H1
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
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Notes
GE Medical Systems
Siemens Multix
Logic and Block Diagrams
LOGIC AND BLOCK DIAGRAMS Patient Positioning
X-ray Generation
3D-III Tube Stand Overhead Brakes 3D-III Tube Stand SID Compensation Multix U Table Supply Voltage Multix U Table Brake Circuit Multix U Table Motor Control Multix CPH Table Component Locations Multix CPH Table Tomo Drive Multix CPH Table Tomo Brakes Multix CPH Table Tomo Power Supply Multix CPH Table Tomo Angle
Exposure Circuit Filament Overview Iontomat Overview kV Overview Rotor Block Diagram
Power Generator Mains Power Generator Power Distribution (1 of 4) Generator Power Distribution (2 of 4) Generator Power Distribution (3 of 4) Generator Power Distribution (4 of 4) Generator Grounding
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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GE Medical Systems
Siemens Multix
Logic and Block Diagrams
Multix CPH Table Component Locations X-ray Tube Tomographic Control Panel Z66 Digital Collimator Stand Brake Control Tube Support Arm Fully Raised PBL Switch ON N19 Digital Bucky Cabinet
MB 5 Table Brake Control
M8 Lift Encoder M4 Tomographic Height Drive Tomographic Control M9 Centrol Control Unit General Interface Tomogr aphic Motor
M10 Lift Control
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
Troubleshooting
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Notes
GE Medical Systems
Siemens Multix
Logic and Block Diagrams
Exposure Circuit D510 Kv Regulator
Enable
D52 Unit Selector
S27 Hand Switch
Inverter
1
Z18 B28
Prep Data
D517 Control Anode
&
Filament Boost
HU
D14 Work Station Select
Exp
+24V (D1B, Z10, Z12, Z14)
Filament
2
&
3
D8 Temp >70C
Z2
&
B/U test falling time time load block
Z26
VH &
VH
D2 D12
Z6
D186 Unit Adapter
L=OK
D52 Unit Selector
Bucky Contact B6 D9.Z30 MAS INT.
Alignment & Calibration
Component Locations
'AR' GRID SIGNAL
Error Codes
8
7
B12
D28
D26 Work Station Select (G1)
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
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GE Medical Systems
Siemens Multix
Logic and Block Diagrams
Filament Overview D516 Reference Value Gen. (Soll)
D518 Fuse Board
Z10
F8
Z8 kV soll
B4
DAC
kV Code fr om D47
Z6
X-ray Tube
47
B8 24 V supply for gate pulses
L S K6
B14 +10 V Ref.
Psoll
Z14
D512 Filament Reg.
B14
B16
D20 Filament Inv.
Z6
Z26
Z26
B8
D526 Focus Switch
5
3
11
C
12
B18 Soll
m A soll
ist
W
D26
EN
D523 Focus Selection
4
B8
V
B10
B10
F
B16
B20
Z12 Return
B10
200 V INV.
m A soll B16
Z2, B2, Z30, B30
1
2
22 = "1"
Z24
D526 R11
R12
Tube II
R11
R12
D28
m A IST
Pr ep. B24
D517 Contr ol
Tube I
B20
B28
D506 Actual Value Detector
D523 Focus Selection
B26
m A IST Z18
Z16
m A 'Bulb'
1 V = 100 m A
m As
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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Self-Paced Training
Notes
GE Medical Systems
Siemens Multix
Logic and Block Diagrams
Multix U Table Supply Voltage Note: Remove jumber if using 220V, only at installation or board swap.
Z1 N
N
M9 D1
X8
M10X1.2 (21/13B)
M10X1.3 (21/13B)
6
4AT
1
7
F6
N
1
6.25AT
L1
5
4AT
1
C
B
5
1
6
7
208V 2
220V 3
1 2
X8
M10X1.1 (21/14E)
1 M9X10
6.25AT
1AT
F4
6
1
F1
S1 2
L
L
4
H1
F5
X9
4
X2
LINE
F2
X10
S1 5
LOAD
3
4
8
A 1 8
9
10
230V 4
11
12 X10
M9
240V 264V 277V 5 6 7 T1
10
11
0V
25V
1
X12
12
2
13
0V
8
21V
3
4
9
0V
14
24V
5
6
0V 7
1
F18 3.2AT
4AT
-
V5
V33
2
V7 ~
~
~ +
F7 6.25AT
9
30V 1
19
31V 2
20
32V
4
21
33V
5
22
34V
7
2200MYF C1
+ R19
V16
U
2200MYF C2 +
1 2
2
3
4
5 X11A
-
6
X6
(20/8G)
1 2
36V
9
25
0V X1
26
6V
8
7
7
27
0V
28
19V
9
6
0V 1
F9 1AT
F15 2.5AT
25V 3
29V 4
3
4
5
1
X1A F8 3.2AT
6
F14 6.25AT
V9 F3 10AT V11
C6
V10 V15
V14 +32V
U
M9 D1
+29V
R6
C5 + C3 +
F13 2.5AFL
V8
F12 2.5AFL
V13
X7 1
2
3
4
X2 2
2 X3
X4 1 X3A 1
1
D5X
X4
1 D6X3
D4
X3
2
D4 (22/ X13.1 1C)
(24/ 18G)
2
3
4 X3A
U8
CONST +5V
+24V MP
D10X1.5
V60
0V
2
CONST
3
M9 PBL D5
J35
3
MP - 0V
D5X4 5 6
MP - +5V
+24V 1/2
X2
1/2
X3 24/25
4
X2
8
7
X8
6
X8 3
D8X4.3
D8X4.2
D8X4.1
(21/3C)
(21/3C)
(21/7B)
(22/1C)
4
V58
X1
X2 5 X8 7
D4X13.2 2
1
U-
X2 9 X6 3
(20/2G)
(24/ 18G) D6
J19
3
2
(Z66X1) 3
X2 10 X6 4
V12
1/2
2
32
+
(20/8G)
D5X3
F10 1AT
~
~
~
V17
1
2
X1A F11 1AFL
31
22V
21V
10
F17 4AT
-
V6
2X2200MYF
X13
30
29
8
1
U
D10X1.2
35V
8
24
V3
+24V
R2
X5
D10X1.1
23
V18
C4 +
~ 4
X11A
+
2200MYF
(29B/3H)
18
2200MYF
8
(29B/3H)
0V
X11 10
17
X1A F16
2.5AT
X9
~
27V 8
3
+
16
F19
X18
V1
15
X1 24/25
X2
D2 0V
D11X1
(1)
(2)
8
F1
Z66
2.5AT 0V= 7
+5V
30V=
AM1
H1
(3)
(4)
0V~
24V~
D10X1.3
6
5
(20/2G)
H2
K1,
(HR1)
K2
24/25
N19.D16 - +24 V for grid drive circuit
Alignment & Calibration
Component Locations
Error Codes
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
Theory
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Notes
GE Medical Systems
Siemens Multix
Logic and Block Diagrams
Multix U Table Brake Circuit B1
B2
J8
S4 0
3
3
2
4
4
3
0 X100 X10
1 S17
S16
S2
2
X1
J7
M7 D32A
J1
J2
X J3
J4
J5
J6
4 2
1
X2
M12 X20
X1
1
X1
1 2
3
4
2
3
4 X3
1 2
1
3
2
3
4
4
X4 +15V
+5V
MB2
4
YE
1
3
MB3
4
BU
YE
MB2 RD MB2
1
3 MB6
BU
4
1
YE
MB3 RD
2
MB3
3
MB5
BU
4
V2
YE
MB6 RD
2
MB6
1
2
MB5
3
1
U-CONST
1
J10
M12 X21
2
4 X2
2
2
J11
3
BU MB5 RD
MP
3
+15V
+8V MP
+8V X1
J6 U-CONST
1
SAB 8749
2
3
+5V J4
M13
V3
1
YE
3
BU MB4 RD
M13
M12
2
V1
3x
1
YE
3
M12
2
6
V9
>
>
V8
S15
+5V
4x 1
Error Codes
1 V16 1 X6
M9 D1
MB5 D10A
J1 V2
Component Locations
4AT
(19.../5F)
+5V
V12
X2
Alignment & Calibration
F16
+24V S15A
BU MB1 RD
2
X1 MP
5
2
2
8
MP
4
3
U-CONST
+24V
Functional Logic & Block Preventive Software & Checks Diagrams Maintenance Diagnostics
+5V
Theory
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