LCD-TV Chassis
: GCR26SE*
GCR32SE*
GCR37SE*
GCR40SE*
Model
: LE26A45*C**
LE32A45*C**
LE37A45*C**
LE40A45*C**
SERVICE
Manual
TFT-LCD TV
Contents
1. Precautions 2. Product specifications
3. Disassembly and Reassembly 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram 7. Schematic Diagram
LE26A45*C**/LE32A45*C**/LE37A45*C**/LE40A45*C**
Refer to the service manual in the GSPN (see the rear cover) for the more information.
Contents
1. Precautions ................... ......................................... ............................................ ............................................ ............................................ ......................... ... 1-1 1-1. Safety Precautions .................................... .................................... ................................. 1-1 1-2. Servicing Servicing Precautions Precautions ................................. .................................... ................................ 1-2 1-3. Electrostatically Electrostatically Sensitive Devices (ESD) (ESD) Precautions .................................................. 1-2 1-4. Installation Precautions .................................... .................................... .......................... 1-3
........................................... ............................................ ............................................ ........................... ..... 2-1 2. Product specifications ..................... 2-1. Feature & Specifications ................................... .................................... .......................... 2-1 2-3. Spec Comparison Comparison to the Old Models .................................... .................................... ...... 2-7 2-4. Accessories .................................. .................................... ........................................... ... 2-8
3. Disassembly Disassembly and Reassemble ................... ......................................... ............................................ ...................................... ................ 3-1 3-1. Disassembly ................................. .................................... ........................................... ... 3-1
4. Tr Troubleshooting oubleshooting ................... ......................................... ............................................ ............................................ ....................................... ................. 4-1 4-1. Troubleshooti Troubleshooting ng ................................... .................................... ....................................... 4-1 4-2. Alignments Alignments and Adjustments .................................. .................................... .................. 4-13 4-3. Factory Mode Adjustments ............................... ................................................................... .................................... ........................ 4-14 4-4. White Balance Balance - Calibration Calibration .................................... .................................... .................. 4-21 4-5. White Ratio (Balance) Adjustment ................................. .................................... ........... 4-23 4-6. HOW TO UPGRADE .................................................................................... 4-24
5. Exploded Exploded View View & Part List ...................... ............................................ ............................................ .......................................... .................... 5-1 5-1. 5-2. 5-3. 5-4. 5-5. 5-6. 5-7. 5-8.
LE26A45*C** LE26A45 *C** LE32A45*C** LE32A45*C** LE37A45*C** LE37A45*C** LE40A45*C** LE40A45*C** LE26A45*C** LE26A45*C** LE32A45*C** LE32A45*C** LE37A45*C** LE37A45*C** LE40A45*C** LE40A45*C**
Exploded Explo ded View View .................................. .................................... ................... 5-1 Exploded View Exploded View .................................. .................................... ................... 5-3 Exploded View Exploded View .................................. .................................... ................... 5-5 Exploded View Exploded View .................................. .................................... ................... 5-7 Parts List .................................... .................................... .......................... 5-9 Parts List .................................... .................................... ........................ 5-41 Parts List .................................... .................................... ........................ 5-73 Parts List .................................... .................................... ...................... 5-106
6. Wiring Diagram ..................... ........................................... ............................................ ............................................ ....................................... ................. 6-1 6-1. Wiring Diagram .................................... .................................... ....................................... 6-1 6-2. Wiring Picture ............................... ................................................................... .................................... ........................................... ... 6-4 6-2-3. LE26/32/37A451C* LE26/32/37A451C*................................. .................................... ................................. 6-5 6-3. Connector Functions ................................. .................................... ................................. 6-6 6-4. Cables ................................... .................................... ........................................... .......... 6-7
7. Schematic Diagram ..................... ........................................... ............................................ ............................................ ................................ .......... 7-1 7-1. Block Diagram .................................... .................................... ........................................ 7-1 7-3. Schematic Schematic Diagrams for iDTV ................................ .................................... .................... 7-2 7-4. Schematic Diagrams Diagrams for Ready ............................... ................................................................... .................................... ................... 7-9
GSPN (Global Service Partner Network) Area
Web Site
North America
http://service.samsungportal.com
Latin America
http://latin.samsungportal.com
CIS
http://cis.samsungportal.com
Europe
http://europe.samsungportal.com
China
http://china.samsungportal.com
Asia
http://asia.samsungportal.com
Mid ide eas astt & Afr fric ica a
http ht tp::// //me mea. a.sa sams msun ungp gpo ort rtal al.c .com om
This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
© 2008 Samsung Electronics Electronics Co.,Ltd. All rights reserved. Printed in Korea P/N: BN82-00340A-00
GSPN (Global Service Partner Network) Area
Web Site
North America
http://service.samsungportal.com
Latin America
http://latin.samsungportal.com
CIS
http://cis.samsungportal.com
Europe
http://europe.samsungportal.com
China
http://china.samsungportal.com
Asia
http://asia.samsungportal.com
Mideast & Africa
http://mea.samsungportal.com
This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
© 2008 Samsung Electronics Co.,Ltd. All rights reserved. Printed in Korea P/N: BN82-00340A-00
1. Precautions
1. Precautions 1-1. Safety Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock.
1-1-1. Warnings 1. For continued safety, do not attempt to modify the circuit board. 2. Disconnect the AC power and DC power jack before servicing.
1-1-2. Servicing the LCD Monitor 1. When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet. 2. It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this meter periodically.
1-1-3. Fire and Shock Hazard Before returning the monitor to the user, perform the following safety checks: 1. Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the monitor. 2. Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc. 3. Leakage Current Hot Check (Figure 1-1): WARNING : Do not use an isolation transformer during this test. Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7). (READING SHOULD) NOT BE ABOVE 0.5mA
LEAKAGE CURRENT TESTER
DEVICE UNDER TEST TEST ALL EXPOSED METAL SURFACES
2-WIRE CORD
*ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED)
EARTH GROUND
Figure 1-1. Leakage Current Test Circuit
4. With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit, etc.) and all exposed metal parts, including: metal cabinets, screwheads and control shafts. The current measured should not exceed 0.5 milliamp. Reverse the power-plug prongs in the AC outlet and repeat the test.
1-1-4. Product Safety Notices Some electrical and mechanical parts have special safetyrelated characteristics which are often not evident from visual inspection. The protection they give may not be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by on schematics and parts lists. A substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate.
1-1
1. Precautions
1-2. Servicing Precautions WARNING: Caution: Note:
An electrolytic capacitor installed with the wrong polarity might explode. Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.
1-2-1 General Servicing Precautions 1. Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before attempting to: (a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect a test component in parallel with an electrolytic capacitor. 2. Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such elements to their original position. 3. After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that the area around the serviced part has not been damaged. 4. Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks). 5. Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect an insulation resistance meter (500 V) to theblades of the AC plug. The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be greater than 1 megohm. 6. Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last.
1-3. Static Electricity Precautions Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly called Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some field-effect transistors. The following techniques will reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. To avoid a shock hazard, be sure to remove the wrist strap before applying power to the monitor. 2. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent accumulation of an electrostatic charge. 3. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDs. 4. Use only a grounded-tip soldering iron to solder or desolder ESDs. 5. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ESDs. 6. Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive materials. 7. Immediately before removing the protective material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution: Be sure no power is applied to the chassis or circuit and observe all other safety precautions. 8. Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or lifting your foot from a carpeted floor can generate enough static electricity to damage an ESD.
1-2
1. Precautions
1-4. Installation Precautions 1. For safety reasons, more than two people are required for carrying the product. 2. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. 3. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire. 4. Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed to moisture. Otherwise, it may cause a fire or electric shock. 5. Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause fire or electric shock. 6. Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the highvoltage cable or the antenna falling over may cause fire or electric shock. 7. When installing the product, leave enough space (10cm) between the product and the wall for ventilation purposes. A rise in temperature within the product may cause fire.
1-3
1. Precautions
Memo
1-4
2. Product specifications
2. Product specifications 2-1. Feature & Specifications Model
T220HD / T200HD
Feature
Supreme Digital Interface & Networking - With a built-in HD digital tuner, it supports HD broadcasting with no particular set-top box and provides simple access with a single remote control.
Excellent Picture Quality - DNIe technology provides life-like clear images.
Dynamic Contrast - Automatically detects the input visual signal and adjusts to create optimum contrast.
SRS TruSurround XT - SRS TruSurround XT provides a virtual Dolby surround system.
Convenience -The TV utilizes the HDMI system to implement perfect digital sound and picture quality. Specifications Description Item T220HD
T200HD
LCD Panel
TFT-LCD Panel, RGB Vertical strip, normaly White, 22-Inch viewable, 0.282(H) X 0.282(V)mm Pixel Pitch
TFT-LCD Panel, RGB Vertical strip, normaly White, 20.1-Inch viewable, 0.258(H) X 0.258(V)mm Pixel Pitch
Scanning Frequency
Horizontal : 30KHz ~ 81KHz(Automatic)
Horizontal :30KHz ~ 81KHz(Automatic)
Vertical: 56Hz ~ 75Hz(Automatic)
Vertical:56Hz ~ 75Hz(Automatic)
Display Colors
16.7 Million colors
16.7Million colors
Maximum resolution
Horizontal: 1680pixels
Horizontal : 1680pixels
Vertical: 1050pixels
Vertical:1050pixels
Input Signal
Analog 0.7Vp-p±10% positive at 75Ω,internally terminated
Analog 0.7Vp-p±10% positive at 75Ω,internally terminated
Input Sync Signal
Type: separate H/V,composite
Type: separate H/V,composite
Level : TTL Level
Level : TTL Level
Maximum Pixel Clock rate
146.250MHz
146.250MHz
Active Display (Horizontal/Vertical)
473.76(H) X 296.1(V)
433.44(H) X 270.9(V)
AC power voltage & Frequency
AC 110 ~ 240V, 50 ~ 60 Hz
AC110 ~ 240V, 50 ~ 60Hz
Power Consumption
Dimensions Set (W x D x H)
520x215x441.5mm (After installation stand)
486x215x417.5mm (After installation stand)
520x86.5x373.5mm (Without stand)
486x86x350mm (Without stand)
Weight Set (After installation Stand)
5.8kg
5.6kg
TV System
Tuning
Frequency Synthesize
System
PAL, SECEM
Sound
MONO, STEREO, NICAM
2-1
2. Product specifications Specifications Description Item T220HD
Environmental Considerations
Operating Temperature: 50˚C ~ 104˚F(10˚C ~ 40˚C) Operating Humidity : 10% ~ 80% Storage Temperature: -4˚C ~ 113˚C(-20˚C ~ 45˚C) Storage Humidity: 5% ~ 95%
Antenna Input
75Ω
Sound Characteristic
-MAX Internal speaker Out : Right : 3W / Left : 3W -BASS Control Range : -8 dB ~ + 8dB -TREBLE Control Range : -8 dB ~ +8 dB -Headphone Out : 10 mW MAX -Output Frequency : RF : 80 Hz ~ 15 kHz A/V : 80 Hz ~ 20 kHz
2-2
T200HD
2. Product specifications
2-2. Spec Comparison to the Old Models Model
T220HD / T200HD
Curie (225MD)
20” / 22”
22”
30 ~ 81 kHz 56 ~ 75 Hz 16,777,216 colors
30 ~ 81 kHz 56 ~ 75 Hz 16,777,216 colors
WXGA, 1680 x 1050 @ 60 Hz
1680 x 1050
H/V Separate, TTL, P. or N. 0.7 Vp-p @ 75ohm
H/V Separate, TTL, P. or N. 0.7 Vp-p @ 75ohm
22” 58W < 2W 20” 50W < 2W
58W < 2W
Design
Screen Size Frequency Horizontal Vertical Display Color PC Resolution Maximum mode Input Signal Sync Signal Video Signal Power Consumption Normal Power Saving
*Color Effect - Grey scale: Images are displayed in a grey tone on the screen. - Green: Images are displayed in a green tone on the screen. - Aqua: Images are displayed in a blue tone on the screen. - Sepia: Images are displayed in a brown tone on the screen. Image Size : : If the resolution is not wide resolution, this option allows the screen size to be selected as normal or wide.
2-3
2. Product specifications
2-3. Accessories Product
2-4
Description
Ccde. No
Remote Control & Batteries (AAA x 2)
BN59-00624A
Power Cord
3903-000085
Stand Body
BN96-07347B
Stand Base
BN96-07345A
D-Sub Cable
BN39-00244G
CBF SIGNAL-DVI(D)
BN39-00246K
User’s Guide, Monitor Driver, Natural Color Pro Software
BN96-07540A
Cleaning Cloth
BN63-01798A
Remark
Samsung Electronics Service center
3. Disassembly and Assembly
3. Disassembly and Assembly This section describes the disassembly and reassembly sequences for this monitor. Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them.
3-1. Disassembly Caution:
1. Turn the monitor off before beginning the disassembly process. 2. When disassembling the monitor, do not use any metal tools except for the provided jig. 3. Remove the signal cable and the power cord before beginning the disassembly.
Description
Photo
Screws
1. Place monitor face down on cushioned table. Remove Stand, then remove 2 marked screws from the rear cover. Caution : If you do not tilt the stand and use too much force to remove it, the connection pin may break.
2. Remove the cover and the LCD panel using the provided jig on both grooves at the bottom.
3. Disassembly and Assembly
Description 3. Insert a flat screwdriver into the groove and then lift up and remove the cover.
4. After remove COVER-REAR, then disconnect SPEAKER , FUNCTION wire. 5. Disconnect LVDS cable from panel.
Photo
Screws
3. Disassembly and Assembly
Description
Photo
Screws
6. After disconnecting SHIELD-LAMP of left side, disassemble lamp wire between panel and IP Board.
7. Remove 8 marked SCREW of left picture. Disconnect IP board. Reassembly procedures are in the reverse order of disassembly procedures.
8. Remove the LCD panel.
3. Disassembly and Assembly
Description 9. Remove the IR module by tilting the left snap to the right.
10. Remove the LED module by sliding the snap designated in the right figure backwards.
11. Remove the two (2) screws and then remove the holders from the four (4) snaps designated in the right figure using the provided jig.
Photo
Screws
3. Disassembly and Assembly
Description
Photo
Screws
12. Remove the two (2) connectors. Caution : Servicing is not supported for the PCB.
13. The assembly is in the reverse order of the disassembly. 14. Connect the disassembled snap and the LED module again.
15. Fix the connecting wire with filament tape Caution : If the wire is damaged when closing the cover, an operating error may occur. Therefore, make sure to close the cover after fixing it with filament tape.
filament tape
3. Disassembly and Assembly
Memo
4. Troubleshooting
4. Troubleshooting 4-1. First Checklist for Troubleshooting 1. Check the various cable connections first. - Check to see if there is a burnt or damaged cable. - Check to see if there is a disconnected cable connection or a connection is too loose. - Check to see if the cables are connected according to the connection diagram. 2. Check the power input to the Main Board. 3. Check the following circuits. • No raster appears: Function PBA, Main PBA, I/P PBA • 55V develop but no screen: Main PBA • 5V does not develop: I/P PBA 4. Check the voltage in and out between the IP Main Board, between the IP Panel, and between the Main LVDS Boards.
4-1
4. Troubleshooting
4-2. No Power Symptom
Major checkpoints
Though the power swtich on, the LED power off and the screen is blank. Check Power cable. Check whether the Lamp connector is connected correctly to the IP. Check whether the power cable is connected correctly to the MAIN. Check whether the Function cable is connected correctly to the MAIN.
C1109 CN1001
Main Board Front Diagnostics
LAMP off, power indicator LED red color?
No
Check a connection a power cable.
No
Change a Assy PCB Power.
No
Change a Assy PCB Power.
No
Check IC1013, IC1005. Change a main PBA.
No
Check a other function.(No picture part) Replace a lcd panel.
Yes Does proper DC 13V appear at DC5V. Yes Does proper DC13V appear at C1004? Yes Does proper DC3.3V, 1.2v appear at C1109? Yes A power is supplied to set?
Caution
4-2
Make sure to disconnect the power before working on the IP board.
4. Troubleshooting
4-2-1. Circuit diagrams when the power does not turn on
1
R1301
1/10W 2
PWM_DIMMING_OUT
0OHM
B5V CN1001
1 R1001_DE
1 D N G M
4.7KOHM A13V 1 2 1 3 1 4 5 6 7 8 9
1:PWM 2:13V/0.65A 3:GND 4:GND 5:GND 6:5.1V/3.0A 7:5.1V/3.0A 8:A-DIMMING 9:ON/OFF
1 1
1
2
A5V 1 1
1 1
2
R1002 0OHM
R1031 4.7KOHM
1
2
B5V 1
2
1 2 D N G M
1 3
CN_SMD_S_009
2 C1001_22
1
B
KTC3875S-Y
2 2
1
4 0 0 1 2 R
1UF
1
1
C1005
100UF 6.3V 2
SW_INVERTER
E
M H O 0
FGND
C
Q1005
C1004
100NF 25V
2 0
F 0 U V 1 5 C 0 0 2 1
3 0 0 1 C
2
F N V 0 0 0 5 1
1
2
R1032 4.7KOHM
1
FGND
FGND
L:INVERTER ON H:INVERTER OFF
FGND
B3.3V_DTV B5V
B3.3VD
A5V 2
BD1022 C1107 1UF 10V
HIGH:ON LOW:OFF
R1040 100KOHM 1/10W
IC1023 1 2 3 4
5A (MAX)
BEAD_CHIP
SI4435BDY-T1-E3
IC1013
TP1002
8 7 6 5
C1120 100NF 25V
1
IN
OUT GND
C1110 100UF 6.3V
TP1001 POWER_ON
R1030 10KOHM 1/10W B
C E
FGND
FGND
3 1
2
2
R1043 10KOHM 1/10W
1
AP1084K33A
1
P 4 I H 3 C 0 _ D 1 A E D B B
C1109 100UF 6.3V
C1112 100NF 25V
2
FGND
FGND
FGND
Q1006 2SC2412K-Q
FGND
4-3
4. Troubleshooting
4-3. No Video (Analog PC) Symptom
Major checkpoints
Though the LED power turns on, the screen is blank when connecting the VGA cable. Even though the LED power turns on, the screen is blank when connecting the VGA cable. Check the D-sub cable connections. Check whether the LVDS cable is connected correctly to the panel. Check whether the lamp connector of the panel is connected correctly to the IP board.
RA5008 RA5009 RA5010 RA5011 RA5012
IC5002
R3020 R3021 R3022
Main Board Front Diagnostics
Power Indicator is off. Lamp on, no video. Yes Check a PC source and check the connection of DSUB cable?
No
Input a analog PC signal and connected cable(DPMS).
No
PC cable. Change a PC cable. Change a main PCB ass’y.
No
Check IC5002. Change a main PBA.
No
Please, Call to Samsung Co. LTD.
Yes Does the sigmal appear at R3020, R3021,R3022?
Yes Does the digital data appear at the output of RA5008~RA5012? Yes Check a LVDS cable? Replace a lcd panel? Caution
4-4
Make sure to disconnect the power before working on the IP board.
