LG 42LB67 Series Service Manual page 72

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Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
21
22
B. Power error_No power
23
B. Power error_Off when on, off while
24
viewing
25
C. Audio error_No audio/Normal video
26
C. Audio error_Wrecked
27
audio/discontinuation
D. Function error_ No response in
28
remote controller, key error
Display has error especially color
29
Copyright © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error symptom
Content
Check front display LED
Check power input Voltage & ST-BY 5V
Checking method when power is ON
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
V-Com checking and adjust method
Continued from previous page
Page
Remarks
A17
A18
A19
A22
A24
A25
A25
A27
A28
LGE Internal Use Only

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