3NY
1-3-8
1-3-3 Electric problems
Problem Causes Check procedures/corrective measures
(1)Defective paper
jam detecting.
False paper jam
message display.
Actuators of paper feed
sensor does not operate
smoothly.
Check visually and replace if necessary.
A piece of paper torn
from a sheet is caught
around actuator of paper
feed sensor.
Check visually and remove it, if any.
Defective paper feed
sensor.
Replace the paper feed sensor.
Defective PF main PWB. Replace the PF main PWB (See page 1-4-4).
Defective printer’s
engine PWB.
Replace printer’s engine PWB.
(Refer to the service manual for the printer)
(2)Defective paper
gauge sensing.
False paper gauge
indication.
Defective paper gauge
sensors.
Replace the PF main PWB (See page 1-4-4).
Actuator of paper gauge
sensors does not oper-
ate smoothly.
Check visually and replace if necessary.
Defective PF main PWB. Replace PF main PWB (See page 1-4-4).
Defective printer’s
engine PWB.
Replace printer’s engine PWB.
(Refer to the service manual for the printer)
(3)Defective paper
size detecting.
False paper size
message display.
Defective cassette size
switch.
Replace the cassette size switch.
Defective PF main PWB. Replace the PF main PWB (See page 1-4-4).
Defective printer’s
engine PWB.
Replace printer’s engine PWB.
(Refer to the service manual for the printer)
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