DOWNLOAD LG 42LX6500-UB (CHASSIS:LA02R) Service Manual ↓ Size: 7.65 MB | Pages: 105 in PDF or view online for FREE

Model
42LX6500-UB (CHASSIS:LA02R)
Pages
105
Size
7.65 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42lx6500-ub-chassis-la02r.pdf
Date
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LG 42LX6500-UB (CHASSIS:LA02R) Service Manual ▷ View online

8. Trouble shooting - No video (FRC - TM480Hz)
Check LVDS Cable(51P, Main to T-con)
Check 4Ch DC-DC Converter IC Output
ok
Check LG1120 Input Signal(60Hz)
Replace Main B/D
Check LG1120 Output Signal(240Hz)
Check 240Hz T-con IC Output Signal
Check X-Tal Output(X100, 25MHz)
Check 12V Power
L801
ok
ok
ok
ok
No
No
No
Check Input Voltage
-. 3.3V(L401, L501)
-. 1.8V(L400, L500)
FRC B/D 12V Line
Short Check
No
Main B/D 12V Line Check
ok
Check FFC Cable(80P, T-con to Module)
ok
ok
Check P-Gamma Data
Change Module
ok
Replace Main B/D
ok
Check LG1120 I2C Line
ok
Check Input Voltage
-. 3.3V(L103)
-. 2.5V(L100)
-. 1.0V(L105)
ok
ok
Replace LG1120
(IC102)
Check T-con IC I2C Line
ok
ok
Replace T-con IC
(IC400 or IC500)
No
Check DC-DC Output Voltage
-. VGH / VGL / VCC
No
Replace T-con B/D
(Output voltage setting is different for each model)
No
Check P-Gamma IC
VCC Input (L800)
ok
Check P-Gamma IC
I2C Line
Check output Data
ok
Replace P-Gamma IC
(IC801)
No
9. Trouble shooting - No video (FRC - TM480Hz with 3D FPGA)
Check LVDS Cable(51P, Main to T-con)
Check 4Ch DC-DC Converter IC Output
ok
Check LG1120 Input Signal(60Hz)
Replace Main B/D
Check LG1120 Output Signal(240Hz)
Check 240Hz T-con IC Output Signal
Check X-Tal Output(X100, 25MHz)
Check 12V Power
L801
ok
ok
ok
ok
No
No
No
Check Input Voltage
-. 3.3V(L401, L501)
-. 1.8V(L400, L500)
FRC B/D 12V Line
Short Check
No
Main B/D 12V Line Check
ok
Check FFC Cable(80P, T-con to Module)
ok
ok
Check P-Gamma Data
Change Module
ok
Replace Main B/D
ok
Check LG1120 I2C Line
ok
Check Input Voltage
-. 3.3V(L103)
-. 2.5V(L100)
-. 1.0V(L105)
ok
ok
Replace LG1120
(IC102)
Check T-con IC I2C Line
ok
ok
Replace T-con IC
(IC400 or IC500)
No
Check DC-DC Output Voltage
-. VGH / VGL / VCC
No
Replace T-con B/D
(Output voltage setting is different for each model)
No
Check P-Gamma IC
VCC Input (L800)
ok
Check P-Gamma IC
I2C Line
Check output Data
ok
Replace P-Gamma IC
(IC801)
No
Check FPGA(IC1000) Output Signal(240Hz)
Check X-Tal Output(X901, 54MHz)
ok
No
Check FPGA I2C Line
ok
ok
ok
Replace FPGA
(IC1000)
Check Input Voltage
-. 2.5V(IC310, 6pin)
-. 1.2V (L309)
9.(2) Trouble shooting – 3D Mode view error (no Depth, like 2D mode)
Change the 3D Glasses
ok
Check 3D_SYNC Line
- Main P7800 49pin
- Formatter P802 2pin
No
Check 3D Emitter of Main - P2401 1pin : 5V
Check Q906,7 of Formatter B/D
Maybe FPGA or FRC has problems.
Replace It or 3D Formatter B/D
No
Replace 3D Glasses
Check 3D Emitter of IR Assy – 1pin : 5V
Replace 3D Emitter Assy
ok
No
No
Replace Q906,7 of Formatter B/D
No
ok
10. Trouble shooting - No video (LG5111 for TM480Hz)
Check BCM LVDS Signal
Check 1.8V Power
L9702
Check IC9702
Check Reset R980
Check P7800 LVDS Signal
Replace IC900
Check 3.3V Power
L9706
Check IC9702
Check T-Con board
ok
ok
ok
High
ok
No
No
low
No
Replace IC9702 or L9700(12V) 
No
Replace IC9703  
No
Replace IC9701
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