LG 32LB520B Service Manual page 29

Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
21
22
23 B. Power error_No power
24
25
B. Power error_Off when on, off while
26
viewing
28
C. Audio error_No audio/Normal video
29
C. Audio error_Wrecked
30
audio/discontinuation
D. Function error_ No response in
31
remote controller, key error
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Error symptom Content
Check front display LED
Check +12V from power board and ST-BY 5V from main board
Checking method when power is ON
Power board and main board voltage measuring method
POWER OFF MODE checking method
Checking method in menu when there is no
audio
Voltage and speaker checking method when
there is no audio
Voltage and speaker checking method in
case of audio error
Remote controller operation checking method
Continued from previous page
Page Remarks
A11
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A13
A4
A14
A15
A16
A16
A17