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11. Don't operate 5V out or 12V out
Is the 5V or 12V Out
"YES" on SVC menu?
Yes
Check the
on/off control of IC100
R160:5V
R142:12V
Yes
Check the operation
of Q1205.
No
Check the RS-232C Pin7(5V_OUT).
Check the RS232C Pin9(12V_OUT).
12. Don't operate IR out
Check the IR waveform
of L403.
Yes
Check the IR waveform
of IC1304_Pin3.
No
Check the RS-232C Pin4.
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
No
Set "YES" on SVC menu.
No
Re-solder or replace the defect part.
No
Re-solder or replace the defect part.
No
Replace the Preamp of IR ass'y.
No
Re-solder or replace the defect part.
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LGE Internal Use Only
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