Unit Repair (Printer Mechanism) - Epson Stylus Photo 750 Service Manual

EPSON Stylus Photo 750

3.5 Unit Repair (Printer Mechanism)

This section provides instruction for repairing mechanism. It describes
various problems, symptom, likely causes, checkpoints, and solutions.
Select appropriate symptom from the the table and check each parts
and its function as describes in the checkpoint.
Table 3-10. Repair of the Printer Mechanism
Symptom Condition
Foreign
substances
are loaded in
the PF gears.
Abnormal PF
motor
Abnormal
operation
Pump
when the
Mechanism
power is
turned on.
The PF motor
is defective.
The pump
tube is
Used ink does
Defective
crashed.
not drain to
pump
the waste ink
The cap is
absorption.
pad.
damaged or
deformed.
Troubleshooting
Cause Check Point Solution
Manually drive
the PF drive
Remove any
gear and
foreign
check if it
objects.
rotates
normally.
Check the
inner coil
resistance and
see if there is
any
disconnection Exchange the
of the coil. PF motor.
(see
Table 3-1,
"Motor, Coil
Resistance,"
on page 39)
Check the Exchange the
tube visually. tube.
Check the
Change the
tube visually.
cap
mechanism.
Unit Repair (Printer Mechanism)
Table 3-11. Repair of the Printer Mechanism
Symptom Condition
Foreign
substances
are loaded in
the CR drive
gears.
Carriage
operation is
abnormal
when tuning
on the power.
The CR motor
is defective.
Abnormal
carriage
operation.
Carriage
operation is
Carriage
abnormal
movement is
during the
not smooth.
printing
operation.
Revision A
Cause Check Point Solution
Check visually
Remove any
if there is any
foreign
substances or
objects.
not.
Check the
inner coil
resistance and
see if there is
any
Exchange the
disconnection
CR motor.
of the coil.
(Table 3-1,
"Motor, Coil
Resistance,"
on page 39)
Manually
move the
carriage and Exchange the
check if it tube.
moves
smoothly.
Repair the
Check the
tension
tension of the
mechanism or
timing belt.
replace it.
Check if there
Remove any
is any foreign
foreign
substances on
objects.
the carriage
path.
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