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Chapter 5 Troubleshooting
Rev. A
5-1
5
Symptom Condition Causes Checkpoint Solution
Abnormal paper
feeding.
Paper is not fed. Friction of the PF
roller.
Check if the PF
roller rotates when
paper is not fed.
Clean the PF roller
by the cleaning
sheet. Replace the
PF roller if it does
not recover.
Abnormal operation
of the hopper.
Check movement of
the ASF hopper
visually.
Replace ASF.
Malfunction of ASF
drive change-over.
Check if the ASF
gear rotates
visually.
Replace gears of
the ASF drive
change-over.
Friction of the PF
roller.
Check if the PF
roller slips during
paper feeding.
Clean the PF roller
by the cleaning
sheet. Replace the
PF roller if it does
not recover.
Printer stops during
initialization.
Fatal error appears. ASF sensor is
defective.
Check the signal
level of the ASF
sensor.(Refer to
Table 5-2)
Replace ASF
sensor.
PE sensor is
defective.
Check the signal
level of the PE
sensor.(Refer to
Table 5-2)
Replace PE sensor.
HP sensor is
defective.
Check the signal
level of the HP
sensor .(Refer to
Table 5-2.)
Head FFC is
disconnected.
Check if the head
FFC is connected.
Connect the head
FFC.
CR motor is
defective.
Check the CR motor
cable is connected.
Replace the CR
motor if there is no
problem in the cable
connection.
PF motor is
defective.
Check if the PF
motor cable is
connected.
Replace the PF
motor if there is no
problem in the cable
connection.
Table 5-11. Repair of the Printer Mechanism (Con.)