Read Sharp XV-Z2000E (serv.man12) Service Manual online
45
XV-Z2000
DT-400
DT-400
Checking the Sync Signal
Is the horizontal synchronized
signal on pin (6) of IC6003?
signal on pin (6) of IC6003?
Is the vertical synchronized signal
on pin (6) of IC6009?
on pin (6) of IC6009?
Is the synchronized signal
outputted from IC5009, IC5005,
IC5006, IC5007 and IC5008?
outputted from IC5009, IC5005,
IC5006, IC5007 and IC5008?
Are the timing of both vertical and
horizontal synchronized signals
correct?
horizontal synchronized signals
correct?
Is the horizontal synchronized
signal on pin (30) of IC6004?
signal on pin (30) of IC6004?
Is the vertical synchronized signal
on pin (31) of IC6004?
on pin (31) of IC6004?
The sync signal is normal.
End of checking.
End of checking.
YES
NO
Check the of the signal input part.
NO
YES
YES
YES
YES
NO
YES
Check each IC and their peripheral
circuits.
circuits.
NO
Check IC6001, IC6002 and their
peripheral circuits.
peripheral circuits.
NO
Set the signal source appropriately.
NO
2
Is the signal generator (input
source) correct?
source) correct?
YES
IC8001 and its periphery is
defective.
defective.
NO
Is the horizontal synchronized
signal on pin (66) of IC6004?
signal on pin (66) of IC6004?
Is the vertical synchronized signal
on pin (64) of IC6004?
on pin (64) of IC6004?
YES
YES
NO
Failure of IC6004 and its
peripheral circuit.
peripheral circuit.
NO
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