LG L6004R Service Manual - Page 19

Set the Knob of SW1

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Possible Trouble 6 It displays abnormally on display PCB Ass'y. NO Is the IC6 all right? YES Is the connection of NO CN-DISP1 all right? YES Does the TR1, NO TR2, TR3 operate normally on main PCB Ass'y? YES • Exchange the display PCB Ass'y. Troubleshooting Guide • Exchange IC6. • Connect connector to CN-DISP1 exactly. • Exchange TR1, TR2, TR3. Possible Trouble 7 The function of Auto Restart does not operate. Is the Knob of SW1 NO set to left position? YES Is the voltage No.3 of NO CN-DISP2 of Main PCB Ass'y DC 5V? YES • Reference to OWNER'S MANUAL. • Set the Knob of SW1 to left position. • Check the SW1. • Check the pattern of Main & Display PCB. Service Manual 19

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Service Manual
19
Troubleshooting Guide
NO
NO
NO
YES
YES
YES
Is the IC6 all right?
Is the connection of
CN-DISP1 all right?
•
Exchange the display
PCB Ass'y.
•
Exchange IC6.
•
Exchange TR1,
TR2, TR3.
•
Connect connector
to CN-DISP1 exactly.
Does the TR1,
TR2, TR3 operate normally
on main PCB Ass'y?
NO
NO
YES
YES
Is the Knob of SW1
set to left position?
Is the voltage No.3 of
CN-DISP2 of Main PCB
Ass'y DC 5V?
•
Reference to
OWNER'S MANUAL.
•
Set the Knob of SW1
to left position.
•
Check the SW1.
•
Check the pattern of
Main & Display PCB.
Possible Trouble 6
It displays abnormally on display PCB Ass'y.
Possible Trouble 7
The function of Auto Restart does not operate.