Sharp XV-Z2000 Service Manual page 44

XV-Z2000
DT-400
Checking the Sync Signal
Is the horizontal synchronized
signal on pin (6) of IC6003?
Is the vertical synchronized signal
on pin (6) of IC6009?
Is the synchronized signal
outputted from IC5009, IC5005,
IC5006, IC5007 and IC5008?
Is the vertical synchronized signal
on pin (31) of IC6004?
Is the horizontal synchronized
signal on pin (30) of IC6004?
Is the vertical synchronized signal
on pin (64) of IC6004?
Is the horizontal synchronized
signal on pin (66) of IC6004?
Are the timing of both vertical and
horizontal synchronized signals
correct?
Is the signal generator (input
source) correct?
IC8001 and its periphery is
defective.
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
NO
YES
44
Check the of the signal input part.
Check each IC and their peripheral
circuits.
Check IC6001, IC6002 and their
peripheral circuits.
Failure of IC6004 and its
peripheral circuit.
The sync signal is normal.
End of checking.
Set the signal source appropriately.
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