LG 75SJ857A Service Manual page 38

Contents of Standard Repair Process Detail Technical Manual
No. Error symptom
14
B. Power error_ No power
15
B. Power error_Off when on, off
16
while viewing
17
C. Audio error_ No audio/Normal
video
18
19
D. Function error
20
21
Content
Check front display LED
Check power input Voltage & ST-BY 3.5V
POWER OFF MODE checking method
Checking method in menu when there is
no audio
Voltage and speaker checking method
when there is no audio
Remote control operation checking
method
Motion Remote operation checking
method
Wifi operation checking method
Continued from previous page
Page Remarks
A17
A18
A19
A20
A21
A22
A23
A24
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