Troubleshooting

5.5 Repair of the M-4J60 Printer Mechanism

This section provides information which allows you to repair and replace defective components of the M- 4J60 printer mechanism. Table 5-8, 5-9, and 5-10 contain various symptoms and the corresponding causes listed in order of possibility. Find the symptom in the table and troubleshoot the problem as instructed.

Table 5-9 Repair of M-4I60 Printer Mechanism.

Condition

 

Cause

Checkpoint

Solution

 

 

 

 

 

 

 

 

 

 

 

Symptom : The CR unit moves abnormally.

 

The CR unit moves

 

Cleaner lever and

Check if the cleaner lever lock is

Push the lever down

abnormally at power

 

CR are interfering

released with the CR unit on the platen

manually to clear the

on

 

with each other.

side.

lever of the CR route.

 

Symptom : The pump unit operates abnormally.

The pump unit

 

Cam select

Check if it is normally operating by

Replace the cam

operates abnormally

 

assembly or cam

performing cleaning and loading and

select assembly or

at power on.

 

change lever in

ejecting paper using the control panel.

cam change lever in

 

 

the CR unit is

 

the CR unit.

 

 

defective.

 

 

 

 

The pump motor

Check if the resistance of the motor

Replace the pump

 

 

is defective.

coil is as follows;

motor.

 

 

 

7.7 Ω ± 10 % at 25 °C per phase

 

 

 

 

(Refer to Table 5-1.)

 

 

 

 

 

 

 

Symptom : Ink absorption is abnormal.

 

Ink is does not drain

 

Ink drain tube is

Check if the tube is properly routed.

Route the tube

into the ink drain pads

caught in the

 

properly.

normally.

 

cleaner lever in

 

 

Cleaning is repeated,

 

the pump unit.

 

 

but it does not solve

 

The tube is

Check if the tube is securely

Connect the tube

the dot missing

 

disconnected from

connected.

securely.

problem.

 

the cap.

 

 

 

 

Ink drain tube is

Check if the tubes in the pump unit and

Replace the pump unit.

 

 

bent or damaged.

under the cap are bent or damaged.

 

 

 

The cap is

Check if the cap is damaged.

Replace the pump unit.

 

 

damaged.

 

 

 

 

The pump unit is

Rotate the pump manually and check if

Replace the pump unit.

 

 

defective.

it rotates with constant resistance and

 

 

 

 

check if it is damaged.

 

 

 

The printhead is

Check if signals are transferred to the

Replace the printhead.

 

 

defective.

printhead.

 

 

 

 

 

 

 

Symptom : CR motor operates abnormally

 

Abnormal rotation at

 

Foreign objects

Check visually if any foreign object is

Remove the foreign

power on.

 

are lodged in the

lodged.

object.

 

 

CR mechanism.

 

 

 

 

CR motor is

Check if the resistance of the motor

Replace the CR motor.

 

 

defective.

coil is as follows;

 

 

 

 

5Ω ± 7% at 25 °C per phase

 

 

 

 

(Refer to Table 5-1.)

 

CR motor rotates, but

 

The timing belt is

Check if the timing belt is installed at

Reinstall the timing

the CR unit does not

 

damaged or

the specified position in the CR unit.

belt properly.

move.

 

disengaged.

Check if the timing belt is bent, worn

Replace the timing

 

 

 

out or has a lack of some teeth.

belt.

 

 

CR motor sub

Check if some teeth of the sub pulley

Replace the CR motor.

 

 

pulley is

broke off.

 

 

 

damaged.

 

 

5-14

Rev. A