LG 32LF11 (CHASSIS:LA92A) Service Manual ▷ View online
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5.6. Tool Option selection
• Method: Press Adj. key on the Adj. R/C, then select Tool
option.
option.
5.7. Ship-out mode check (In-stop)
• After final inspection, press In-Stop key of the Adj. R/C and
check that the unit goes to Stand-by mode.
• After final inspection, Always turn on the Mechanical S/W.
6.1. Method
- Check that Power Cord is fully inserted to the SET.
(If loose, re-insert)
- Unit fully inserted Power cord, Antenna cable and A/V
arrive to the auto-check process.
- Connect D-terminal to AV JACK TESTER
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
- Auto CONTROLLER(GWS103-4) ON
- Perform GND TEST
- If NG, Buzzer will sound to inform the operator.
- If OK, changeover to I/P check automatically.
(Remove CORD, A/V form AV JACK BOX)
- Perform I/P test
- If NG, Buzzer will sound to inform the operator.
- If OK, Good lamp will lit up and the stopper will allow the
- If NG, Buzzer will sound to inform the operator.
- If OK, Good lamp will lit up and the stopper will allow the
pallet to move on to next process.
6.2. Checkpoint
• TEST voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
• TEST time: 1 second
• TEST POINT
• TEST POINT
- GND TEST = POWER CORD GND & SIGNAL CABLE
METAL GND
NEUTRAL
• LEAKAGE CURRENT: At 0.5mArms
7. USB S/W Download (option)
(1) Put the USB Stick to the USB socket
(2) Automatically detecting update file in USB Stick
(2) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is Low,
it didn’t work.
But your downloaded version is High, USB data is
automatically detecting
automatically detecting
(3) Show the message “Copying files from memory”
(4) Updating is staring.
(5) Updating Completed, The TV will restart automatically
(6) If your TV is turned on, check your updated version and
(6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have,
TV can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* After downloading, have to adjust TOOL OPTION again.
1) Push "IN-START" key in service remote controller.
2) Select "Tool Option 1" and Push “OK” button.
3) Punch in the number. (Each model has their number.)
2) Select "Tool Option 1" and Push “OK” button.
3) Punch in the number. (Each model has their number.)
Model
Tool 1 Tool 2
Tool 3 Tool 4 Menu
32LH20
16449 1572
932
1024
2 HDMI, CAN Tuner
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TROUBLESHOOTING
1. Power-up boot check
Check stand-by Voltage.
P700 8pin : +5V_ST
Check X100 clock
12MHz
Check Power connector.
and AC S/W on?
OK
No
OK
Check Multi Voltage.
P700 13pin : 12V, 18pin : *20V
*20V Voltage is dependent on model.
32/36LH20, 32LH30 => 24V
19/22LH20 => 15V(pin1 or 2)
Replace Power board.
Replace X100.
OK
Check Fuse.
OK
No
Check P700 PWR_ON.
2pin : 5V
OK
Re-download software.
No
OK
Check Q706 output level
5V
Replace Q706
No
Replace Mstar(IC100) or Main board
OK
Replace Power board.
No
Check inverter control & error
P700 22pin : Low
P700 20pin : high
OK
Check Power board or Module.
No
Check Mstar LVDS output
R812, R813,..., R821
OK
Replace Mstar(IC100) or Main board.
No
Check IC704 output voltage
3.3V
OK
Replace IC704.
No
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2. Digital TV Video
Check RF cable & Signal.
Check Tuner 5V Power
IC1001 4pin
OK
OK
Check Check Demodulator Input
Clock(X1005-25MHz)
Check IC1002.
Check IC1005(19”, 22”).
No
Check IF_P/N Signal
OK
Bad Tuner. Replace Tuner.
No
Replace X1005.
No
OK
Check Mstar LVDS output
R812, R813,..., R821
Check IC1004(LGDT) Output
- AR1070, AR1071
OK
Replace IC1004.
No
Replace Mstar(IC100) or Main board.
No
3. Analog TV Video
Check RF cable.
Check Tuner 5V Power.
IC1001 4pin
OK
Check CVBS signal.
TU1001 #19 Pin
Check IC1002.
Check IC1005(19”, 22”)
No
OK
Replace Tuner.
No
OK
Check Mstar LVDS output
Replace Mstar(IC100) or Main board.
No
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4. Component Video
Check Component Cable.
Check JK1200.
OK
Check input signal format.
Is it supported?
OK
Replace Jack.
No
OK
Check Mstar LVDS output
Replace Mstar(IC100) or Main board.
No
5. RGB Video
Check RGB Cable conductors for
damage.
Check JK1204.
OK
OK
Check input signal format.
Is it supported?
OK
Check signal R/G/B/H/V-Sync
C113, C108, C114, R146, R149
Replace Jack.
No
Check EDID.
OK
Replace the defective IC or re-download EDID data
No
Check other set.
If no problem, check signal line.
No
OK
Check Mstar LVDS output
Replace Mstar(IC100) or Main board.
No
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