LG LAS350B Service Manual page 25
2.1 ch sound bar
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Also See for LAS350B:
- Owner's manual (29 pages) ,
- Simple manual (4 pages) ,
- Manual (4 pages)
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ELECTRICAL TROUBLESHOOTING GUIDE
B
YES
Function transformation
to OPT
YES
Does it output
audio?
YES
Function transformation
to PORT Insert AUDIO line
YES
Does it output
audio?
YES
TEST END.
NO
Check the OPT
the input signal
Check if JK502
voltage is ok(3.3 V)?
Replace the JK502(OPT)
NO
Check if MCL3730
pin4 "H"
Check if IC400 pin13, 14
Is there a signal input?
Check if IC400 pin3, 4
voltage is ok(3.3 V, 5 V)?
Check if IC400 pin6~9
(MCLK, LRCK, DATA, BCK)
Replace the IC400
3-12
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
Check the OPT line,
Changing the OPT Equipment
Check if CON502 is ok?
Check if JK504 det.pin
voltage is ok(0 V)?
YES
Replace the JK504
Check the POWER PART.
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