Daewoo DR-C912B, Service Manual

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95
TROUBLESHOOTING
The protect takes place in the
VFD
Are the #4,#7,#12,#17 of IC
301, IC330,IC360 connected to
the ground?
Are the #2~3, #8~9,#10~11,#16~17 of
IC301,IC330,IC360 connected the
ground?
Is+4V obtained at
#26(TRI),#27(Fault) of
IC301,IC330,IC360?
Check IC301, IC330,IC360 and
replace inferior device
YES
NO
Is there ‘H’ at IC220 #25?
YES
Check Power circuit
Is there ‘H’ at IC220 #10?
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
YES
Check DVD Board
NO
Check IC220 and replace
inferior device
Check Q201,Q202
Is there ‘H’ at IC200
#51(EAPD)?
NO
YES
YES
NO
YES