ā LG Electronics. Inc.2009
Contents of LCD TV Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
21
B. Power error_No power
Check front display LED A17
22 Check power input Voltage & ST-BY 5V A18
23 Checking method when power is ON A19
24 POWER BOARD voltage measuring method A4
25
26
B. Power error_Off when on, off while
viewing
POWER OFF MODE checking method A22
27
B. Power error_Off when on, off while
viewing
POWER BOARD PIN voltage checking
method
A19
28
C. Audio error_No audio/Normal video
Checking method in menu when there is no
audio
A24
29
Voltage and speaker checking method when
there is no audio
A25
30
C. Audio error_Wrecked
audio/discontinuation
Voltage and speaker checking method in
case of audio error
A25
31
D. Function error_ No response in
remote controller, key error
Remote controller operation checking
method
A27
32 D. VCOM Adjustment Sequence of the Vcom adjustment A28
Continued from previous page
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Only for training and service purposes
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