Sharp XV-Z10000 (serv.man11) Service Manual ▷ View online
36
XV-Z10000
YES
YES
YES
YES
YES
Checking the input signal
setting
Is the input signal setting
as specified?
as specified?
Select the specified signal.
Is the connector properly
connected?
connected?
NO
Reconnect the connector.
End
NO
1
2
Checking the video input
Make sure the input signal
setting is as specified.
setting is as specified.
Check the sync signal.
Is there the video signal at
the land of C8077?
the land of C8077?
Input PWB defective.
IC8025 or IC8004
defective.
defective.
NO
37
XV-Z10000
YES
YES
Checking the sync signal
Is there vertical sync signal
at TL8134?
at TL8134?
Check the input signal
setting.
setting.
Input PWB defective.
Is there horizontal sync
signal at TL8133?
signal at TL8133?
NO
Input PWB defective.
NO
YES
YES
Is there vertical sync signal
at TL8131?
at TL8131?
IC8302, IC8325, IC8299 or
their peripheral circuits
defective.
their peripheral circuits
defective.
Is there horizontal sync
signal at TL8130?
signal at TL8130?
NO
NO
YES
YES
Are both the vertical and
horizontal sync signals
timely?
horizontal sync signals
timely?
There is no problem with
the sync signal.
End.
the sync signal.
End.
Make the specified signal
source settings.
source settings.
Is the signal generator
(input source) as
specified?
(input source) as
specified?
NO
NO
2
38
XV-Z10000
YES
YES
YES
NO
NO
Checking the RGB signal
Is the type of signal set at
RGB?
RGB?
Are there specified signals
at TL8073, TL8074,
TL8075 and TL8080?
at TL8073, TL8074,
TL8075 and TL8080?
Are there input signals at
C8069 and C8061?
C8069 and C8061?
IC8004 or its peripheral
circuit defective.
circuit defective.
Call the process mode.
Select R, G and B
separately on the pattern
menu.
separately on the pattern
menu.
Go to “Checking the GA4
peripheral circuits”.
peripheral circuits”.
Set the signal generator to
the gradation signal mode
in order to check the input
signal.
the gradation signal mode
in order to check the input
signal.
Measure the gradation
signals at TL8073, T8074,
T8075 and T8080.
signals at TL8073, T8074,
T8075 and T8080.
Set to the RGB signal.
Input PWB defective.
IC8025 or its peripheral
circuit defective.
circuit defective.
NO
39
XV-Z10000
YES
NO
NO
YES
YES
NO
YES
NO
YES
NO
NO
NO
YES
NO
NO
YES
YES
YES
Checking the GA4
peripheral circuits
peripheral circuits
Call the process mode, and
select R, G and B
separately on the pattern
menu.
select R, G and B
separately on the pattern
menu.
Are there specified R, G
and B video output signals?
and B video output signals?
Is there clock signal at
R974?
R974?
Are there sync signals at
TL8026, TL8027 and
TL8028?
TL8026, TL8027 and
TL8028?
Using the oscilloscope,
measure the signals at
TL8141 thru TL8148.
measure the signals at
TL8141 thru TL8148.
Are the measured signals
the same as the signals
selected on the pattern
menu?
the same as the signals
selected on the pattern
menu?
Using the oscilloscope,
measure the signals at
TL8106 thru TL8111.
measure the signals at
TL8106 thru TL8111.
Are the measured signals
the same as the signals
selected on the pattern
menu?
the same as the signals
selected on the pattern
menu?
IC8029 defective.
End of checking the GA4
peripheral circuits.
peripheral circuits.
Digital panel PWB
defective.
defective.
IC8025 defective.
Output PWB defective.
Are the measured signals
the same as the signals
selected on the pattern
menu?
the same as the signals
selected on the pattern
menu?
Is there clock signal
(37.125 MHz) at TL8114?
(37.125 MHz) at TL8114?
IC8029 defective.
Is there clock signal
(37.125 MHz) at FL8110?
(37.125 MHz) at FL8110?
X8005 defective.
IC8025 defective.
Are there sync signals at
TL8112 and TL8133?
TL8112 and TL8133?
IC8025 defective.
IC8029 defective.
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