LG CM9550 Service Manual page 52
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Also See for CM9550:
- Owner's manual (43 pages) ,
- Simple manual (4 pages) ,
- Owner's manual (43 pages)
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ELECTRICAL TROUBLESHOOTING GUIDE
USB play
When insert USB,
IC501 PinU7, U8, A7, A8 USB_D
signal OK?
YES
A
AUX
IC202
Pin7, 8 AUX input signal
OK?
YES
IC202
Pin42, 43, 44 I2S input signal
OK?
YES
IC202 Pin41
ADC/MIC_data output signal
OK?
YES
A
IC300
NO
USB power +5 VU
OK?
NO
Check audio cable.
NO
NO
3-31
NO
YES
Check IC501.
Replace IC202.
Replace IC300.
- Quick Links:
- Power Supply on Smps Board
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