Read Sharp XV-Z21000 (serv.man3) Service Manual online
XV-Z20000/XV-Z21000/DT-5000
5 – 6
Check OSD.
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?
YES
END
NO
Is there a clock signal at TL6618?
NO
Is a clock signal (74.25MHz) present at
TL6007?
TL6007?
NO
Check peripoheral circuits of
IC6001.
IC6001.
YES
YES
Is there a clock signal at TL6006
NO
X6002 is defective.
YES
Check peripoheral circuits of IC6001
Is a synchronization signal present at
TL6617, TL6620-21?
TL6617, TL6620-21?
NO
Check the bus signal between IC5003
and IC6001.
and IC6001.
YES
Check TL6622, TL6619 using an
oscilloscope. Is the signal seen cor-
rect?
oscilloscope. Is the signal seen cor-
rect?
YES
The connector CN6604 or FPC and for-
matter unit are defective.
matter unit are defective.
NO
IC6001 (CVIC) is defective.
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