Daewoo DCR-9130 SERIES, Service Manual

Page: 27 / 66

26
TROUBLESHOOTING
Is+3.3V obtained at IC200
VDD_3.3?
Is+2.5V obtained at IC200
VDD_2.5?
Is+3.3V obtained at the IBIAS of
IC301,IC330,IC360?
Check power circuit.
YES
YES
YES
NO
Is+32.5V obtained at the Vcc of
IC301,IC330,IC360?
YES
YES
Check IC220
NO
Is there H at IC200
#64(PWDN)?
Is There H output of IC222
#3?
NO
Is+3.3V obtained at PWRDN of
IC301IC330,IC360?
YES
No sound in the DVD MODE.
Is there H at IC220 #25?
Check Q201, Q202
Check IC301, IC330, IC360 and
signal Flow circuit and replace
inferior device.
NO
Is there H at IC220 #25?
YES
Is there L at IC220 #26?
YES
Check Headphone and signal
flow circuit.
Check IC501 and Data ports
Check DVD Board
Is there H at IC220 #37?
YES
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
Replace IC200.
YES
YES
YES
NO
NO
NO
NO
NO
NO
6. AMP CIRCUIT