3.2 Repair of the Printer Mechanism
This section provides instruction for repairing the printer mechanism. It describes various
problems, symptom, likely causes, checkpoints, and solutions. Select appropriate symptom
from the table and check each parts and its function as described in the checkpoint.
Table 3-3. Repair of the Printer Mechanism
Symptom Condition Cause Check Point Solution
Abnormal pump
mechanism operation
Abnormal PF motor
operation when the power
is turned on.
Foreign substances are loaded
in the PF gears.
Manually drive the platen drive gear and check
it if it rotates normally.
Remove any foreign substances.
The PF motor is defective.
(Refer to Table5-1)
Check the inner coil resistance and see if there
is any disconnection of the coil.
Replace the PF motor.
Ink is not absorbed or is
poorly absorbed.
Used ink does not go
through the waste ink
tube.
The pump tube is crashed. Check the tube visually. Fix the crashed part by the airgun.
Capping rubber is damaged or
deformed.
Check the capping rubber visually. Replace the cap mechanism.
The tube is out of the cap. Check if the tube is out of the cap visually. Connect the tube properly.
Pump bulb is not closed at
absorption.
Check the bulb operation visually. Replace the cap mechanism.
Abnormal carriage
operation.
Abnormal carriage
operation at power on.
Foreign substance in the CR
drive gear.
Check visually if there is any substances or not. Remove any foreign substances.
CR motor is defective.
Check the inner coil resistance and see if there
is any disconnection of the coil.
Replace the CR motor.
Abnormal carriage
operation during printing.
Carriage movement is not
smooth.
Check whether the carriage moves smoothly
when moved manually.
Clean and lubricate the carriage guide
axis.
Check tension of the timing belt. Adjust tension mechanism or replace it.
Check if there is any foreign substances in the
carriage path.
Remove any foreign substances.
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