LG MCS1306F - Page 63

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ELECTRICAL TROUBLESHOOTING GUIDE
iPod
Check IC501.
Replace IC202.
Check USB_VBUS of IC203.
IC202
Pin42,43,44 I2S input signal
OK?
IC202
Pin41 ADC data output
signal OK?
NO
NO
NO
IC203
Pin4 USB_VBUS 5 V
OK?
YES
A
A
IC202
Pin25,26 iPod input signal
OK?
NO
YES
YES
YES
YES
YES
YES
POT. IN
Check USB board.
Replace IC202.
Check IC501.
NO
NO
NO
IC202
Pin21,22 POT. IN input signal
OK?
IC202
Pin41 ADC data output signal
OK?
IC202
Pin42,43,44 I2S input signal
OK?