Citizen PPU 700 Service Manual page 21

• Faulty ejection of paper
Phenomenon
Paper is not ejected.
Paper feed roller does not
rotate.
Cause
Faulty paper path
Scratch in paper path
Sipping of feed roller
Poor cutting of auto cutter
Non-recommended paper
is used.
Faulty control PCB assy
Faulty power supply
Faulty connection of
motor connector
Defective motor
Faulty power supply
Foreign substance in the
gear or broken gear
Check Method
Check whether paper
remainder is present in the
paper path.
Check the paper path for
any scratch.
Check whether any
foreign substances are
adhered to the feed roller.
Check whether paper is
cut correctly.
Check the paper path for
any paper remainder.
Check whether the paper
being used meets the
specification.
—
Check whether the
specified power supply is
used.
Check the connecting
condition of the motor
connector.
Check the DC voltage
with a DC voltmeter.
Check whether the
specified power supply is
used.
Check for any foreign
substance caught in the
motor gear and feed roller
or any breakage of the
gears.
17
PPU-700 Service Manual
Remedy
Eliminate unnecessary
paper.
Replace the paper guide.
Dip a cotton swab or soft
cloth in ethyl alcohol and
wipe the foreign
substances with them.
Eliminate unnecessary
paper.
Replace it with the
specified paper.
Replace the control PCB
assy.
Use the specified power
supply.
Connect the connector
correctly.
If the supply voltage is
normal, replace the motor.
Use the specified power
supply.
Eliminate the foreign
substance. If the gear is
broken, replace it with
new one.