LG 42LB5800 - Page 58

Contents of LCD TV Standard Repair Process Detail Technical Manual
Continued from
p
revious
p
a
g
e
ppg
No. Error symptom Content Page Remarks
21 Check front display LED A17
22
Check power input Voltage & ST
-
BY 3 5V
A18
B. Power error_No power
22
Check
power
input
Voltage
&
ST
-
BY
3
.
5V
A18
23 Checking method when power is ON A19
24 POWER BOARD voltage measuring method A5
25
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
viewing
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
there
is
no
audio
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
controller
,
key
error
32 D. VCOM Adjustment Sequence of the Vcom adjustment A28
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