Sharp XV-Z12000 (serv.man12) Service Manual ▷ View online
43
XV-Z12000
Check the RGB input.
YES
NO
Is a projection image displayed?
Go to "Check the video input.".
NO
YES
Is the picture distorted?
Go to "Check the synchro-
nization signal.".
nization signal.".
YES
NO
Are all three colors (R, G, and B)
being output?
being output?
Go to "Check the RGB signal.".
YES
NO
Is the image frame normal?
Go to "IC8004 peripheral
check".
check".
End.
Select INPUT1 or INPUT2 using
the operation key or the remote
control.
the operation key or the remote
control.
Select INPUT1 or INPUT2 using
the operation key or the remote
control.
the operation key or the remote
control.
44
XV-Z12000
Check the video input.
Is the signal generator (input
source) set correctly?
source) set correctly?
NO
Set the signal generator (input
source) correctly.
source) correctly.
YES
NO
The IC8367 peripheral circuit is
defective.
defective.
Is the video signal present at pin
(124) of IC8004?
(124) of IC8004?
YES
NO
Check the installation of the
main unit.
The main unit is defective.
main unit.
The main unit is defective.
Is the video signal present at pin
(25) of IC8367?
(25) of IC8367?
YES
Check the input signal type.
Go to "Check the synchronization
signal.".
signal.".
Go to "Check the RGB signal.".
When checking the optional
input signal on the menu
display, select the RGB input or
set it to RGB using the
RGB/COMP key on the remote
control (toggles).
input signal on the menu
display, select the RGB input or
set it to RGB using the
RGB/COMP key on the remote
control (toggles).
45
XV-Z12000
Check the synchronization
signal.
signal.
YES
NO
Set the signal generator (input
source) correctly.
source) correctly.
Is the signal generator (input
source) set correctly?
source) set correctly?
YES
NO
Is a vertical synchronization
signal present at TL8134?
signal present at TL8134?
YES
NO
The main unit is defective.
Is a horizontal synchronization
signal present at TL8133?
signal present at TL8133?
YES
NO
Is a vertical synchronization
signal present at TL8131?
signal present at TL8131?
YES
NO
The IC8302, IC8325 or IC8001
peripheral parts are defective.
peripheral parts are defective.
Is a horizontal synchronization
signal present at TL8130?
signal present at TL8130?
YES
NO
The main unit is defective.
Is the timing for both the vertical
and horizontal synchronization
signals correct?
and horizontal synchronization
signals correct?
Are the synchronization signals
normal?
normal?
Go to "GA4 peripheral check".
46
XV-Z12000
Check the RGB signal.
YES
No
Set the input signal type to
RGB.
RGB.
Is the input signal type set to
RGB?
RGB?
Go to "GA4 peripheral check".
GA4 peripheral check
YES
NO
Press the key on the main unit or the
[MENU] key on the remote control.
Is the menu display brought up?
[MENU] key on the remote control.
Is the menu display brought up?
Go to "Check OSD.".
NO
YES
Select the color bar from the
process mode Pattern menu.
Is the projection image displayed
correctly?
process mode Pattern menu.
Is the projection image displayed
correctly?
End of "GA4 peripheral check"
Set the signal generator to output
a RAMP signal.
a RAMP signal.
NO
YES
Check FL8141 - FL8148 using an
oscilloscope. Is a pulse being
output?
oscilloscope. Is a pulse being
output?
The J5 connector or the
formatter unit is defective.
formatter unit is defective.
NO
YES
Are signals present at TL8106 -
TL8111?
TL8111?
IC8029 (GA4) is defective.
Go to "IC8004 peripheral check".
YES
NO
Is the CW-INDEX value shown in
the process mode DLP menu
within the standard value range:
130–2?
the process mode DLP menu
within the standard value range:
130–2?
Adjust the CW-INDEX.
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