Sharp XV-Z2000 Service Manual page 34

XV-Z2000
DT-400
Checking the power supply system
Is 13V outputted to pins (9) and (11) of
P1707?
YES
Is 6V outputted to pins (1) and (3) of
P1707?
YES
Is the connector of P1707 fully inserted?
Is the voltage of 6V applied to both ends?
YES
Is B+5VA outputted from IC1707?
YES
Is Bu+5V outputted from IC1701?
YES
Is Bu+3.3V outputted from IC1702?
YES
Is Bu+2.5V outputted from IC1703?
YES
Go to "Checking the peripheral circuits of
the microprocessor".
NO
Go to "Checking the power unit".
NO
Go to "Checking the power unit".
NO
Replace the thermal fuse.
NO
Check IC1707 and its peripheral circuits.
NO
Check IC1701 and its peripheral circuits.
NO
Check IC1702 and its peripheral circuits.
NO
Check IC1703 and its peripheral circuits.
34