Epson 440 Service Manual page 125

Symptom
Abnormal paper Paper is not fed.
feeding.
Printer stops during Fatal error appears. ASF sensor is
initialization.
Rev. A
Table 5-11. Repair of the Printer Mechanism (Con.)
Condition Causes
Friction of the PF
roller.
Abnormal operation
of the hopper.
Malfunction of ASF
drive change-over.
Friction of the PF
roller.
defective.
PE sensor is
defective.
HP sensor is
defective.
Head FFC is
disconnected.
CR motor is
defective.
PF motor is
defective.
Chapter 5 Troubleshooting
Checkpoint
Check if the PF Clean the PF roller
roller rotates when by the cleaning
paper is not fed. sheet. Replace the
PF roller if it does
not recover.
Check movement of Replace ASF.
the ASF hopper
visually.
Check if the ASF Replace gears of
gear rotates the ASF drive
visually. change-over.
Check if the PF Clean the PF roller
roller slips during by the cleaning
paper feeding. sheet. Replace the
PF roller if it does
not recover.
Check the signal Replace ASF
level of the ASF sensor.
sensor.(Refer to
Table 5-2)
Check the signal Replace PE sensor.
level of the PE
sensor.(Refer to
Table 5-2)
Check the signal
level of the HP
sensor .(Refer to
Table 5-2.)
Check if the head Connect the head
FFC is connected. FFC.
Check the CR motor Replace the CR
cable is connected. motor if there is no
problem in the cable
connection.
Check if the PF Replace the PF
motor cable is motor if there is no
connected. problem in the cable
connection.
Solution
5-15