Internal Use Only website:http://biz.LGservice.com
PLASMA TV SERVICE MANUAL CHASSIS : PA81A
MODEL : 50PG60UD
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
50PG60UD-AA
CONTENTS
CONTENTS ......... ................. ................ ................. ................. ................. ................. ................ ................. ................. ................. ........... 2 SAFETY PRECAUTIONS ........ ................. ................. ................. ................. ................ ................. ................. ...............3 .......3 SPECIFICATION ................... ........................................ .......................................... .......................................... ...........................4 ......4 ADJUSTMENT INSTRUCTION ........ ................ ................ ................. ................. ................. ................. ...............6 .......6 TROUBLE SHOOTING ........ ................. ................. ................ ................. ................. ................. ................. ................ .........1 .11 1 BLOCK DIAGRAM...................................................................................19 EXPLODED VIEW ........ ................. ................. ................. ................. ................ ................. ................. ................. ............... ...... 24 SVC. SHEET ............................................................................................... PRINTED CIRCUIT DIAGRAM ......... ................. ................. ................. ................ ................. ................. ................. .........
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
-2-
LGE Internal Use Only
SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design wit hout permission of manufacturer.
General Guidance
Leakage Current Hot Check (See below Figure)
An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation. If any fuse (or Fusible Resistor) in this monitor is blown, replace it with the specified.
Plug the AC cord directly into the AC outlet. Do not use a line Isolation Transformer during this check. Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to 0.5mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer.
When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor 10mm away from PCB.
Leakage Current Hot Check circuit
Keep wires away from high voltage or high temperature parts.
AC Volt-meter
Due to high vacuum and large surface area of picture tube, extreme care should be used in handling the Picture Tube. Do not lift the Picture tube by it's Neck.
Leakage Current Cold Check(Antenna Cold Check) With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1MΩ and 5.2MΩ. When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer.
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
-3-
To Instrument's exposed METALLIC PARTS
0.15uF
Good Earth Ground such as WATER PIPE, CONDUIT etc.
1.5 Kohm/10W
LGE Internal Use Only
SPECIFICATIONS NOTE : Specifications and others are subject to change without notice for improvement. V
Application Range This spec is applied to the 50” PLASMA TV used PA81A Chassis.
V
Chassis
Model Name
Market
Brand
PA81A
50PG60UD-AA
Australia
LG
Remark
Specification Each part is tested as below without special appointment. 1) Temperature : 25±5°C (77±9°F), CST : 40±5 2) Relative Humidity: 65±10% 3) Power Voltage: Standard Input voltage (100-240V~, 50/60Hz) * Standard Voltage of each product is marked by models. 4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with SBOM. 5) The receiver must be operated for about 20 minutes prior to the adjustment.
V
Test Method 1) Performance : LGE TV test method followed. 2) Demanded other specification Safety : CB specification EMC : CISPR 13 specification Model
Market
50PG60UD-AA
Australia
Appliance Safety : IEC/EN60065 EMI
V
Remark
: CISPR 13 Class B
General Specification ( 50” WXGA ) No
Item
Specification
1
Display Screen Device
50” Wide Color Display Module
2
Aspect Ratio
16:9
3
PDP Module
PDP50G1,
Remark
Plasma Display Panel
RGB Closed(Well) Type, Glass Filter(38%) Pixel Format : 1365horiz. By 768 ver. 4
Operating Environment
1)Temp.
: 0~40deg
LGE SPEC.
2)Humidity : 20~80% 5
Storage Environment
3)Temp.
: -20~60deg
4)Humidity : 10~90% 6
Input Voltage
100-240V~, 50/60Hz
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
-4-
Maker : LG
LGE Internal Use Only
V
Module Specification2 No
Item
Specification
1
Market
Australia
2
Broadcasting system
1) PAL-BG
Remark
2) DVB T 3
Receiving system
Analog : Upper Heterodyne Digital : COFDM
4
Video Input (2EA)
PAL, NTSC
Rear AV 1EA, Side AV 1EA
5
S-Video Input (1EA)
PAL, NTSC
Side AV
6
Component Input (2EA)
Y/Cb/Cr, Y/Pb/Pr
7
RGB Input
RGB-PC
Analog(D-Sub 15Pin)
8
HDMI Input(4EA)
HDMI-PC
HDMI1/DVI,HDMI2,HDMI3,HDMI4(Side)
HDMI-DTV 9
Audio Input (6EA)
RGB/DVI Audio, Component, AV
10
SPDIF Out(1EA)
SPDIF Out
11
USB
X-Studio(JPEG,MP3), Upgrade(USB1.3)
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
-5-
Side
LGE Internal Use Only
ADJUSTMENT INSTRUCTION * Using ‘power on’ button off the control R/C, power on TV.
1. Application Object These instructions are applied all of the 50” PLASMA TV, PA81A Chassis.
4. Auto-control adjustment process V V
2. Note (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument. (2) Adjustment must be done in the correct order. (3) The adjustment must be performed in the circumstance of 25±5°C of temperature and 65±10% of relative humidity if there is no specific designation. (4) The input voltage of the receiver must keep 100-240V~, 50/60Hz. (5) The receiver must be operated for about 15 minutes prior to the adjustment.
All adjustment process is executed one time through RS-232C. Command send -> ADC Calibration -> Model name download -> EDID download. CMD1CMD2 Data 0
NO
Item
1
Ready
a
d
0
0
Ready
2
ADC
a
d
1
0
ADC start
3
ADC
a
d
9
9
a
d
9
0
a
e
0
0
Remark
Confirmation ADC
4
Mode Out Download
5
Transmitting adjustment mode In
Mode In
After RGB Full white HEAT-RUN Mode, the receiver must be operated prior to adjustment. O Enter into HEAT-RUN MODE 1) Press the POWER ON KEY on R/C for adjustment. 2) OSD display and screen display PATTERN MODE. - Select “3. Test Pattern” by using D/ E(CH+/-) and press ENTER(V) - Select “White” by using (F/ GVOL+/-) and press ENTER(V)
instruction, operate adjustment command.
O
EDID
6
a
e
1 0~4,9
All=0 ; HDMI1,2,3,4=1,2,3,4 ; RGB=9
a
e
2 0~4,9
All=0 ; HDMI1,2,3,4=1,2,3,4 ; RGB=9
a
e
5 1~7
Model define index(Data0) are listed at
Download Check EDID
7
Status 8 Define model name Adjustment
9
next table. a
e
9
9
EDID data existence check in SET
Confirmation
* Set is activated HEAT-RUN without signal generator in this mode. * Single color pattern(RED/BLUE/GREEN) of HEAT-RUN mode uses to check PANEL.
Download
10
assembly a
e
9
0
Mode Out
V
* Using ‘power on’ button off the control R/C, power on TV. All adjustment process is executed one time through RS-232C. Do not connect extrenal input calbe.
Adjsutment process protocol(RS-232C)
CMD1
CMD2
a
e
Data 0 5
Remark 2
50PG60UD-AA
3. S/W auto download using the USB Memory stick * Using ‘power on’ button of the control R/C, power on TV. USB file(EPK) version must be bigger than downloaded version of main B/D.
5. Manual model name download (1) Press ADJ KEY on R/C for model name D/L. (2) Select “0.Model Option” and press ENTER( V). (3) Select model name by using D / E (CH+/-)and press ENTER(V).
(1) Insert the USB memory sick the PCB ASSEMBLY. (2) Using ‘power on’ button of the control R/C, power on TV. (3) S/W download process is executed automatically.
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
-6-
Model Name
Model Option Value
50PG60UD-AA
36030130
LGE Internal Use Only
6. Manual ADC Adjustment RF Input
AV / Component / RGB input
NO SIGNAL or White noise
NO SIGNAL
V V
(3) HDMI 2
Adjustment is done using internal ADC, so input signal is not necessary. Do not connect external input cable.
6-1. Required Equipment (1) Press ADJ KEY on R/C and enter EZ ADJUST. (2) Select “1.EDID D/L” by using D / E (CH+/-) and press ENTER(V). (3) Select “Start” by using F/ G(VOL+/-) and press ENTER(V). (4) ADC Adjustment is executed automatically.
(4) HDMI 3
7. EDID Download 7-1. Required Equipment *Do not connect HDMI and RGB cable. (1) Press ADJ KEY on R/C and enter EZ ADJUST. (2) Select “5.EDID D/L” by using D / E (CH+/-) and press ENTER(V). (3) Select “Start” and press ENTER(V). (4) EDID download is executed automatically. (5) Press EXIT key on R/C. (5) HDMI 4
7-2. EDID DATA (1) RGB EDID
(2) HDMI 1
1.[1]-Product ID Model Name 50PG60UD
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
-7-
Product ID
Product ID
Product ID
Hex
EDID table
50085
C3A5
A5C3
Analog(RGB)
50086
C3A6
A6C3
Digital(HDMI)
HDMI
4EA
LGE Internal Use Only
* Press the POWER ON KEY on R/C before Model name download. Befor adjusting White-balance, the AV ADC should be done. If ADC status were “NG”, Need to ADC adjustment.
Each PCB assembly must be checked by check JIG set. (Because power PCB Assembly damages to PDP Module, especially be careful)
9. Adjustment of White Balance
8. POWER PCB Assy Voltage Adjustments (Va, Vs Voltage adjustments)
9-1. Required Equipment (1) Color Analyzer : CA-1000, CA-100+(CH.10) CA-210(CH.10). * Please adjust CA-100+/CA-210 by CS-1000 before measuring. -> You should use Channel 10 which is Matrix compensated(White, Red, Green, Blue revised) by CS1000 and adjust in accordance with balance adjustment coordinate.
8-1. Test Equipment : D.M.M. 1EA 8-2.Connection Diagram for Measuring : refer to Fig.1
8-3. Adjustment Method (1) Va Adjustment 1) After receiving 100% Full White Pattern, HEAT RUN. 2) Connect + terminal of D.M.M to Va pin of P811, connect - terminal to GND pin of P811. 3) After turning VR901, voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top. (Deviation; ±0.5V)
W Color temperature standards according to CSM and Module.
(2) Vs Adjustment 1) Input signal : RF noise signal. 2) Connect + terminal of D.M.M to Vs pin of P811, connect – terminal to GND pin of P811. 3) After turning VR951, voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top. (Deviation; ±0.5V)
CSM
PLASMA
Cool
11000K
Normal
9300K
Warm
6500K
Remark
W Change target luminance and range of the Auto adjustment
W/B equipment. Target luminance
65
Range
20
W White balance adjustment coordinate and color temperature.
(Fig.1) Connection diagram of power adjustment for measuring
Cool
CS-1000
CA-100+(CH.10) CA-210(CH.10)
X
0.276
0.276±0.002
0.276±0.002
y
0.283
0.283±0.002
0.283±0.002
uv
0.000
0.000
0.000
Medium
CS-1000
X
0.285
0.285±0.002
0.285±0.002
y
0.293
0.293±0.002
0.293±0.002
uv
0.000
0.000
0.000
Warm
CS-1000
X
0.313
0.313±0.002
0.313±0.002
y
0.329
0.329±0.002
0.329±0.002
uv
0.003
0.003
0.003
CA-100+(CH.10) CA-210(CH.10)
CA-100+(CH.10) CA-210(CH.10)
* PC(for communication through RS-232C) -> UART Baud rate : 115200 bps
(Fig.2) 50” Full HD Power PCB Assy Voltage adjustment
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
-8-
LGE Internal Use Only
9-2. Connection Picture of the Measuring Instrument(On Automatic control)
10. Adjustment of White Balance (1) Press ADJ KEY on R/C and enter EZ ADJUST. Select “3. Test Pattern” by using D/ E(CH+/-) and press ENTER(V) Select “White” by using F/ G(VOL+/-) and press ENTER(V) and heat run over 15minutes. (2) Zero Calibrate CA-100+/CA-210, and when controlling, stick the sensor to the center of PDP module. (3) Press ADJ KEY on R/C and enter EZ ADJUST. Select “2. White Balance” and press G(VOL +). Set test-pattern on and display inside pattern. (5) Control is carried out on three color temperatures, COOL, MEDIUM,WARM. (Control is carried out thress times)
(1) Inside PATTERN is used when W/B is controlled. Connect to auto controller or push control R/C IN-START -> Enter the mode of White-Balance, the pattern will come out.
Full White Pattern
CA-210
Color ANALYZER TYPE : CA-210
RS-232C Communication
(Fig.3) Auto AV(CVBS) Color Balance Test Pattern - R-Cut / G-Cut / B-Cut is set to 64 - Control R-Gain and G-Gain. - Each Gain is limited to 192. - R-Cut / G-Cut / B-Cut is set to 64 - Control R-Gain and G-Gain. - Each Gain is limited to 192. - R-Cut / G-Cut / B-Cut is set to 64 - Control G-Gain and B-Gain. - Each Gain is limited to 192.
9-3. Auto-control interface and directions (1) Adjust in the place where the influx of light like floodlight around is blocked.(illumination is less than 10ux) (2) Measure and adjust after sticking the Color Analyzer(CA100+, CA210) to the side of the module. (3) Aging time - After ajing start, keep the power on(no suspension of power supply) and heat-run over 15minutes. - keep white pattern using inside pattern. V
Auto adjustment Map(RS-232C) RS-232C COMMAND [CMD ID DATA]
Cool
Med
Warm
R Gain
jg
Ja
js
G Gain
jh
Jb
B Gain
ji
Jc
CENTER (DEFAULT)
Min
MAX
Cool
Med
Warm
00
192
192
192
255
je
00
192
192
192
255
jf
00
192
192
192
255
R Cut
64
64
64
128’
G Cut
64
64
64
128
B Cut
64
64
64
128
11. Input the Shipping Option Data 1) Push the IN-START key in a Adjust Remocon. 2) Input the Option Number that was specified in the BOM, into the Shipping area. 3) The work is finished, Push V Key.
12. Set Information (Serial No& Model name) 12-1. Check the serial number & Model Name (1) Push the menu button in DTV mode. (2) Select the SETUP -> Diagnostics -> To set. (3) Check the information.
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
-9-
LGE Internal Use Only
13. SET factoring condition (1) This adjustment is setting factory shipment mode. (2) Push the IN-STOP key of adjustment remote controller before the factory shipment. No
Item
Condition
1 Input Mode
Antenna
2 Volume Level
10
3 Mute
Off
4 Aspect Ratio
16:9
5 SET ID
1
6 Picture PSM
Vivid
Color Temp. Advanced
7 Sound
8 Time
Remark
Medium Cinema
Off
Black level
Auto
SSM
Standard
AVL
Off
Balance
0
TV Speaker
On
Auto Clock
On
Manual Clock
--
Off Timer / On Timer
Off
Sleep Timer / Auto Off 9 Option
SIMPLINK
On
Key Lock
Off
ISM Method
Normal
Power Saving
Level 0
10 Channel Memory
Analog Digital
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 10 -
LGE Internal Use Only
TROUBLE SHOOTING GUIDE 1. Power Board 1-1. The whole flowchart which it follows in voltage output state
Start check
Doesn't the screen whole come out?
Yes
Is it identical with Power Off condition?
No
Is the Interface signal operated?
Yes No
Doesn't the low pressure output come out?
Yes
1. Check the Power Off condition.
Yes
Doesn't the St-by 5V signal come out?
2. Check the Interface signal condition.
Doesn't the 5V Monitor signal come out?
No
Yes No
Doesn't the VSC signal RL-ON come out?
No
Yes
3. Check the St-by 5V signal circuit.
Yes
4. Check the 5V Monitor signal circuit.
5. Check the VSC RL-ON signal. No
Doesn't the high tension output come out?
Yes
Doesn't the VSC signal Vs-ON come out? Yes
Does high tension output voltage Drop occur?
Yes
7. Check the VSC Vs-ON signal
No
Yes
When the Y, Z B/D Module input connector is remove, does Power Board hightension output voltage Drop occur?
Doesn't the VSC low pressure output come out?
Doesn't the Vs, Va voltage output come out?
No
Yes
8. Check the Vs, Va voltage output circuit.
No
When the Y B/D Module input connector is removed, does output voltage drop occur?
6. Check the VSC low pressure output
No
When the Z B/D Module input connector is removed, does output voltage Drop occurs?
No Yes
Manufacture enterprise meaning of a passage
Yes 10. Check the Z B/D Module output circuit
9. Check the Power Board Output high tension circuit
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 11 -
Yes 11. Check the Y B/D Module output circuit
LGE Internal Use Only
2. No Power (1) Symptom 1) Doesn’t minute discharge at module. 2) Non does not come in into the front LED.
(2) Check following No A Power cord is plugged with TV set?
Plug the power cord.
Yes
Is the AC-INLET connected with the power board?
No Connect the AC-INLET
Yes
Is the Fuse(F101,F801) on Power Board normal?
No Replace the Fuses.
Yes
Is the Power Board with VSC Board though Cable connected?
No Connect the Cable.
Yes
Measure output voltages(16V,12V,5V) on the power board. If the measured values is not normal, replace power board.
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 12 -
LGE Internal Use Only
3. Protect Mode (1) Symptom 1) After once shining, it does not discharge minutely from module. 2) The Rely falls.(The sound is audible “click”) 3) It is converted with the color where the front LED is red from green.
(2) Check following Is the Power Board normal ?
No
Is output the normality Low/High voltage except Stand-by 5V?
No
Replace Power Board.
Yes Is the each connector normal?
No
After connecting well each connector, the normality it operates?
Yes
Replace the connector.
Yes Is the Y-Board normal?
No
Is the Fuse(FS201) on Y-B/D normal?(In case of open is replace)
Yes
Is the output voltage normal after remove P209 connector of Y-B/D?
Yes
Replace Y-Board.
Yes
Replace Z-Board.
Yes Is the Z-Board normal?
No
Is the Fuse (FS1) on Z-B/D normal? (In case of open is replace)
Yes
Is the output voltage normal after remove P3 connector of ZB/D?
Yes Is the X- Board normal?
No
Is the output voltage normal after remove P242 connector of X-B/D?
Yes
After remove P211 output voltage normality: Replace Right X-B/D After remove P23 output voltage normality: Replace Left X-B/D
Yes Is the Ctrl Board normal?
No
Is the output voltage normal after remove P163 connector of Ctrl-B/D?
Yes Replace the Ctrl-Board.
Yes Is the VSC Board normal?
No
Is the output voltage normal after remove P1001 of VSC Board?
Yes
After remove P1001 normal operation: Replace VSC Board
Yes Is the COF of X, Y, Z normal ?
No
After crisis COF of each board, check the normality operates. If in case normality operates, correspondence COF Fail is replace the module.
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 13 -
LGE Internal Use Only
4. No Raster (1) Symptom 1) No OSD and image occur at screen. 2) It maintains the condition where the front LED is green.
(2) Check following Does minute discharge At Module?
No
NO Is the VAVS on?
Is output the normality Low/High voltage except stand-by 5V?
NO
Replace the Power board
YES
Yes
Is the LVDC cable normal?
Check the PDP Module
No
Reconnect the LVDS cable in P501
Yes
Is the IC700(FLI106X0H) Output normal?
No Replace the VSC.
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 14 -
LGE Internal Use Only
5. In case of occurring strange screen into specific mode 5-1. In case the OSD does not displayed (1) Symptom 1) LED is green. 2) The minute discharged continuously becomes Accomplished from module.
(2) Check following
Is the LVDS cable normal ?
No
Yes
Is the LVDS cable connected?
Replace the LVDS cable.
No
Connect the LVDS cabel with the VSC board.
Yes
Is the VSC Board normal?
No
Is the IC100(FLI106X0H) normal?
Yes Replace the VSC B/D
No
Replace the IC100(FLI106X0H)
Yes
Is the Ctrl Board of Module normal?
No Replace the Ctrl B/D.
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 15 -
LGE Internal Use Only
5-2. In case of does’t display the screen into specific mode (1) Symptom 1) The screen does not become the display from specific input mode (RF, AV, Component, RGB, DVI).
(2) Check following 1) Check the all input mode should become normality display .
(3) In case of becomes unusual display from RF mode Is the Tuner normal?
No
Is the RF cable connected with TV Set?
Yes
Is the Input voltage, IIC Communication and CVBS output normal?
No
No
Yes
Replace the Tuner.
Connect the RF cable.
Block A Is the IC100(FLI106X0H) normal?
No
Is the IIC communication waveform between the tuner and IC100 normal?
No
Replace the IC100(FLI106X0H).
(4) In the case of becomes unusual display from side S-video/AV mod Is the Video input of the AV (JK105, JK106) normal?
No Check the input source
Same as Block A
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 16 -
LGE Internal Use Only
(5) In the case of becomes unusual display from Component, RGB mode Is the R,G,B input and H,V Sync of the JK104 normal?
No Check the input source
Yes Same as Block A
(6) In the case of becomes unusual display from HDMI mode Is the HDMI(IC201) normal?
No
Is the TMDS waveform between the IC and HDMI jacks normal?
No Replace the IC201.
Yes Same as Block A
(7) In the case of becomes unusual display from component mode Is the Video input of component jack normal?
No Check the input source
Yes Same as Block A
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 17 -
LGE Internal Use Only
6. In case of no sound (1) Symptom 1) LED is Green. 2) Screen display but sound is not output.
(2) Check following All input(mode) is no sound?
Yes
Is the speakers turned on(OSD menu)?
No
Only HDMI is No Sound?
No
Set on the speakers on menu.
No
Connect the Speaker Cable.
No
Replace the IC602 (MSP4458)
No
Replace the IC601 (NTP-3000A)
YES
Yes
Download the EDID data
Is the speaker Cable connect?
No
Yes Only RF is no sound?
Check the Tuner’s IN/OUTPUT
Yes
Is the IC602 normal? YES
Is the IC601 normal? YES
Replace the VSC Board
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 18 -
LGE Internal Use Only
BLOCK DIAGRAM l e n a P A G X W ] t i b 0 1 [ D D O S D M T S D V L
C 2 I e l u d o M
C 2 3 2 S R
F P L M A ) a R e t D y d n 1 S B o 0 7 2 M m i C I R 4 6 Q D ( D
M A ) a R e t D y d n 1 S B o 0 7 2 M m i C I R 4 6 Q D ( D
] 2 1 : 0 [ s s e r d d A 2 R D D
] 1 3 : 6 1 [ a t a D 2 R D D
] 5 1 : 0 [ a t a D 2 R D D
h N s ) O a l B I 4 F M S 0 N 4 R 2 A C 3 O ( P I N S
] 4 2 : 0 [ s s e r d d A t s o H
] 5 1 : 0 [ a t a D t s o H
) p A 0 m 1 a 0 0 l 0 3 6 a t i P C g T I i D N (
F I D P S
S 2 I
N A 6 1 1 0 C 8 4 C 2 I T A
R D C 2 1 3 0 2 1 3 C X I A M
T U O _ F I D P S
X T
X R
M 2 O 1 7 R 5 0 9 P C C E L I E 4 2
NLASB3157 IC1013
X R / X T
B C S I 2 U
8 M P 2 0 O 1 6 8 C I T C I M W
C 2 I
X X T T
6 0 3 0 1 I L F
) l a i r e S ( L A V , Y S , K L C , ] 0 [ S T
F I S , S B V C
C / Y , S B V C
S 2 I
C / Y , S B V C
R L _ W S
P 2 S 0 6 M C I
V A , V V T T D NLASB3157 IC502
R / L , r P b P Y
R / L , r P b P Y
B G R
T U O T N M / V T D
] 7 : 0 [ S D M T
] 7 : 0 [ S D M T
G A P 1 1 5 0 3 2 S C D I M T
R , L R , L
Tuner (TDFV-G135D1) TU301
1 V A
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
r o t i t u n o o M
) 2 e V d i A S (
- 19 -
1 P M O C
2 P M O C
B G R
, , 3 1 I 2 I I M M M D D D H H H
4 I M D H
LGE Internal Use Only
R E N U T
0 0 0 3 P T N
T E S E R _ E F
T E S E R _ W S
] 4 1 D I_ X V [
G 8 5 4 4 P S M
] 5 D _ O X V [
6 0 3 0 1 I L F
] N _ T E S E R [
] N _ T S R _ J E [
T E S E R G A T J E
T E S E R S Y S
0 2 0 I F h T s 0 l a 4 1 F N 0 6 R 4 C 5 O I 2 L N G 9 2 S
T E S E R
W / S c i T
) t e s e R ( m a r g a i D k c o l B Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
] 6 E O I P G [
M O C I M ] T S R N [
t e s e R M O C I M t e F s e A R 9 3 2 n 0 0 O 8 7 r I C A e I K w o P
- 20 -
LGE Internal Use Only
e 2 l 7 u x d 0 o : M 4 X
0 0 0 4 3 5 x P 0 T N
M O 0 5 C x I 0 M
R l E F a 1 1 E i t x N i g x : : 0 U D 0 T R W
V 3 . 3 _ 2 L C S , V 3 . 3 _ 2 A D S
l o r t n o C C 2 I
6 R g 7 8 E l o 8 x x N a 0 0 U n : : T A R W
2 6 7 M 1 A A 5 A x x R C 0 0 V L : : N 4 R 2 W
V 5 _ 1 L C S , V 5 _ 1 A D S
] 1 C 2 I r e t s a M [
6 0 3 0 1 I L F
] 1 C 2 I e v a l S [
] 1 L M C S O D , 1 C I A D M S D [
] 0 C 2 I r e t s a M [
] 2 C 2 I e v a l S [
] 0 C 2 I e v a l S [ N B 2 D 0 I D C E 4 2 T A
S G 2 0 D A P M 1 2 C T 5 I 3
m r o f t a l P 7 3 5 8 X N P
N B 2 D I 0 D C E 4 2 T A
N B 2 D I 0 D C E 4 2 T A
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
N B 2 D I 0 D C E 4 2 T A
N B 2 D I 0 D C E 4 2 T A
- 21 -
N B 2 D I 0 D C E 4 2 T A
LGE Internal Use Only
, y ) r o P m F e E M R h V _ s D a l V U F A 8 . , ( 1 r n + e i f l f u p a b h I C C , , A W / 0 S 0 I 0 3 M P D T H N
r e n u T R E N U T V 5 +
F 5 ) 0 1 R 1 8 0 7 1 A I C K I (
r e n u T R E N U T V 3 . 3 +
V 3 . 3 +
A 0 0 0 3 P T N , r e n u T
E R T 8 . 1 H ) 7 4 1 0 1 0 1 1 Z I C A (
Y B T S _ V 3 . 3 +
, m o c i M b u S , r e v i r D 2 3 2 S R
V 5 +
m a r g a i D k c o l B e g a t l o V r e w o P
A 1 F 3 ) 3 2 R 1 8 0 7 1 A I C K I (
) 9 5 0 0 8 0 7 1 A C K I (
3 . 3 H ) 7 3 1 0 1 0 1 1 Z C A I ( N O _ V 3 . 3
V 2 1
W / S ) r 3 e 0 w 0 o 1 P ( Q T E F
A 0 0 0 3 P T N
V 6 1 + _ P
F F O / N O _ R W P / N O _ L R
V 6 1
V 5
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
B S U , M A R V N , k c a J C I T P O , W / S I M D H
- 22 -
LGE Internal Use Only
S A L G U O D V 3 . 3 +
m a r g a i D k c o l B e g a t l o V r e w o P
R D D _ S A L G U O D _ V 8 . 1 +
H P Z 2 0 Z ) E 0 8 0 1 $ 0 0 3 1 2 Q . C P 0 I (
A 1 F 3 3 ) 1 R 8 0 7 0 1 A I I C K ( N O _ V 3 . 3
S A L G U O D _ V 6 2 . 1 +
N E _ S A L G U O D _ V 8 . 1
$ 1 4 . T 0 R , T A S 3 , ) 9 z 2 1 h 0 5 K 0 4 0 1 C 0 I C S 6 (
N E _ S A L G U O D _ V 6 2 . 1
V 5
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
- 23 -
LGE Internal Use Only
EXPLODED VIEW IMPORTANT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and EXPLODED VIEW. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.
305 300
301 120
304
306
200
121
307
209 571
303
310
208 560
570
302 201 203
206
580
202
240
205
290
280
230
204 207
231
250
520
591
590
900
- 24 -
400 910
901
LGE Internal Use Only
PRINTED CIRCUIT BOARD MAIN(BOTTOM)
MAIN(TOP)
Control B/D(TOP)
PREAMP B/D(TOP)
Control B/D(BOTTOM)
PREAMP B/D(BOTTOM)
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
PRINTED CIRCUIT BOARD MAIN(BOTTOM)
MAIN(TOP)
Control B/D(TOP)
PREAMP B/D(TOP)
Control B/D(BOTTOM)
PREAMP B/D(BOTTOM)
Copyright©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes
LGE Internal Use Only
P/NO : MFL41834605
Apr., 2008 Printed in Korea