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5-5. PAPER FEEDING IS OUT OF ORDER
Fuse F401 is blown.
signals output from pins
4, 6, 8, and 10 of IC407 on
MA-91 board?
output from CN201 on
MA-91 board?
UP-960(UC)
UP-960CE(CE)
START
YES
NO
Are pulse
NO
YES
Is signal
NO
YES
Fuse F401 on MA-91board
is defective.
Pins 93 to 96 of IC505, or
IC407 line on MA-91 board
are defective.
Peripheral circuits Q407 and
Q408, and CN201 line on
MA-91 board are defective.
The platen motor is defective.
5-5
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