Daewoo DCR-9130 SERIES, Service Manual

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27
TROUBLESHOOTING
Is+5V obtained at IC220 #9, #35,
#44?
Is+3.3V obtained at IC200
VDD_3.3?
Is+2.5V obtained at the IC220
VDD_2.5?
Check power circuit.
YES
YES
YES
NO
Is there L at IC220 #10?
YES
YES
Check IC601 and Data ports.
NO
Is there normal 16MHz oscillation
signal at IC220 #20, #21?
Check X220 and replace
inferior device.
NO
Are there clocks at IC200
#10(LRCLK), #11(BCLK), #20(MCLK)
and PCM Datum at IC200 #6(PCMO),
#7(PCM1), #8(PCM2), #9(PCM3)?
YES
The volume is not operating
Check DVD Board
YES
Check IC220 and replace inferior
device.
NO