Read Sharp XV-Z21000 (serv.man3) Service Manual 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.
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