LG 22LS2100 (CHASSIS:LD93Q / LP93Q) Service Manual ▷ View online
- 21 -
10. Abnormal sound (AV)-Main PCBA
Put into AV cable completely?
Abnormal sound (AV)
YES
NO
Insult AV cable tight
1
Change IC600
WAVEFORMS
Is waveform at C688,C689
2
Check Line between JK101 and IC600
is open or short, Another is
change AV cable
NO
YES
C688,C689 (audio in)
2
- 22 -
11. Abnormal sound (HDMI)-Main PCBA
Put into HDMI
cable completely?
Abnormal sound (HDMI)
YES
NO
NO
insulted HDMI cable
1
Change IC600
Is Input signal timing
and format in spec?
Change Timing according to
product spec, change format to PCM
2
Is waveform at R319,
R320
3
Check Line between JK300 and IC600
is open or short, Another is
Change HDMI cable
NO
YES
YES
Is waveform at R321,R322,
R323,R324,R325,R326
YES
4
Check Line between JK301 and IC600
is open or short, Another is
Change HDMI cable
NO
Can read EDID and
HDCP key though
16,15pin of JK300
Check Line between JK300 and IC600
is open or short, Another is
Change IC602 or HDMI cable
YES
Is 5V at 19pin of JK300?
Check Line between JK300 and IC600
is open or short, Another is
Change IC600 or HDMI cable
5
YES
6
- 23 -
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BLOCK DIAGRAM
- 24 -
A2
A21
A31
A10
* Set + Stand
900
200
400
540
800
910
120
300
510
51
1
500
502
501
LV
1
410
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
Click on the first or last page to see other 22LS2100 (CHASSIS:LD93Q / LP93Q) service manuals if exist.