Sharp XV-Z21000 (serv.man3) Service Manual ▷ View online
XV-Z20000/XV-Z21000/DT-5000
5 – 13
IC5706 peripheral check
Is a clock signal (24.57 MHz) present
at X5701?
at X5701?
NO
Check X5701, or IC5706 is defective.
YES
Is a clock signal present at TL5712?
NO
IC5706 is defective.
YES
Supply a RAMP signal to VIDEO, and
observe pins (86 - 100) of
IC5706using an oscilloscope.
observe pins (86 - 100) of
IC5706using an oscilloscope.
Is a pulse present at pins (86 - 100) of
IC5706?
IC5706?
NO
IC5706 is defective.
YES
Supply a color bar signal to VIDEO,
and observe pins (112 - 122) of
IC5706.
and observe pins (112 - 122) of
IC5706.
Is a pulse present at pins (112 - 122)
of IC5706?
of IC5706?
NO
IC5706 is defective.
YES
IC6001 or after is defective.
XV-Z20000/XV-Z21000/DT-5000
5 – 14
Check the DVI analog input.
Supply a PC-RGB analog signal to
DVI.
DVI.
Select DVI using the key on the main
unit or the remote control.
unit or the remote control.
Check the input signal type.
When checking the optional input signal
on the menu display, set it to "A. RGB".
on the menu display, set it to "A. RGB".
Is a projection image displayed?
YES
END.
NO
Is an RGB signal present at pins (2),
(8), and (14) of IC5652?
(8), and (14) of IC5652?
NO
Check in the vicinity of the DVI connector.
YES
Is a vertical synchronization signal
present at TL5505?
present at TL5505?
NO
IC5502 or peripheral parts are defective.
YES
Is a horizontal synchronization signal
present at TL5504?
present at TL5504?
NO
IC5503 or peripheral parts are defective.
YES
Is a synchronization signal present at
TL5509 and TL5515?
TL5509 and TL5515?
NO
IC5511 is defective.
YES
IC5652 or after is defective.
XV-Z20000/XV-Z21000/DT-5000
5 – 15
Check the DVI digital/HDMI
Supply a PC-RGB digital signal to
DVI.
DVI.
Select DVI using the key on the main
unit or the remote control.
unit or the remote control.
Check the input signal type.
When checking the optional input signal
on the menu display, set it to "D. PC
RGB".
on the menu display, set it to "D. PC
RGB".
Is a projection image displayed?
YES
END.
NO
Is a clock signal present at TL5368?
NO
Are images projected when the HDMI sig-
nal is input into H1 or H2 and INPUT is
selected?
nal is input into H1 or H2 and INPUT is
selected?
YES
Check peripheral circuits of DVI
connector.
Check peripheral circuits of
IC5356.
connector.
Check peripheral circuits of
IC5356.
YES
NO
Is a pulse present at pins (92 - 124)
and (2 - 35) of IC5357?
and (2 - 35) of IC5357?
NO
Check peripheral circuits of IC5356 and
IC5357.
IC5357.
YES
Is a synchronization signal present
atTL5364, TL5366 and TL5370?
atTL5364, TL5366 and TL5370?
NO
IC5357 is defective.
YES
Is a synchronization signal present at
TL5509 and TL5515?
TL5509 and TL5515?
NO
IC5511 is defective.
YES
Check IC6001 or after.
XV-Z20000/XV-Z21000/DT-5000
5 – 15
Check the DVI digital/HDMI
Supply a PC-RGB digital signal to
DVI.
DVI.
Select DVI using the key on the main
unit or the remote control.
unit or the remote control.
Check the input signal type.
When checking the optional input signal
on the menu display, set it to "D. PC
RGB".
on the menu display, set it to "D. PC
RGB".
Is a projection image displayed?
YES
END.
NO
Is a clock signal present at TL5368?
NO
Are images projected when the HDMI sig-
nal is input into H1 or H2 and INPUT is
selected?
nal is input into H1 or H2 and INPUT is
selected?
YES
Check peripheral circuits of DVI
connector.
Check peripheral circuits of
IC5356.
connector.
Check peripheral circuits of
IC5356.
YES
NO
Is a pulse present at pins (92 - 124)
and (2 - 35) of IC5357?
and (2 - 35) of IC5357?
NO
Check peripheral circuits of IC5356 and
IC5357.
IC5357.
YES
Is a synchronization signal present
atTL5364, TL5366 and TL5370?
atTL5364, TL5366 and TL5370?
NO
IC5357 is defective.
YES
Is a synchronization signal present at
TL5509 and TL5515?
TL5509 and TL5515?
NO
IC5511 is defective.
YES
Check IC6001 or after.
