Daewoo SD-8100, Service Manual

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14
TROUBLESHOOTING
Is 5V obtained at IC301
pin#91?
YES
NO
NO
NO
YES
YES
Is IC301 pin#80 REC(H)
HIGH?
Is VIDEO SW Pulse input at
IC301 pin#70?
Is REC signal input at IC301
pin#94, 95, 89, 90?
EP MODE: 89, 90 Pin
SP MODE: 94,95Pin
Check HEAD and Connector.
Is signal input at IC301 pin#
48, 50, 52, 54?
Check POWER circuit.
Check IC601 pin#22.
Check IC601 pin#18.
No recording.
Check EE MODE.
YES
NO
Is FM signal output at IC301
pin#78?
Is Video signal input at IC601
pin#50?
Check POWER circuit.
No OSD appears.
Is 5V obtained at IC601 pin#
53, 98, 99?
Is Video signal output at IC601
pin#52?
NO
Replace IC301.
Check IC 301.
NO
NO
YES
C. No recording
D. No OSD(On Screen Display) appears
YES
YES
NO
Check IC 601.
Check IC 601.