EPSON Stylus Photo 750

Revision A

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

 

Cause

 

Check Point

 

Solution

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Manually drive

 

 

 

 

 

 

Foreign

 

the PF drive

 

Remove any

 

 

 

 

substances

 

gear and

 

 

 

 

 

 

 

foreign

 

 

 

 

are loaded in

 

check if it

 

 

 

 

 

 

 

objects.

 

 

 

 

the PF gears.

 

rotates

 

 

 

 

 

 

 

 

 

 

 

 

 

 

normally.

 

 

 

 

Abnormal PF

 

 

 

 

 

 

 

 

 

 

 

Check the

 

 

 

 

motor

 

 

 

 

 

Abnormal

 

 

 

 

inner coil

 

 

 

operation

 

 

 

 

 

Pump

 

 

 

 

resistance and

 

 

 

when the

 

 

 

 

 

Mechanism

 

 

 

 

see if there is

 

 

 

power is

 

 

 

 

 

 

 

 

 

 

any

 

 

 

 

turned on.

 

 

 

 

 

 

 

 

The PF motor

 

disconnection

 

Exchange the

 

 

 

 

 

 

 

 

 

 

is defective.

 

of the coil.

 

PF motor.

 

 

 

 

 

 

(see

 

 

 

 

 

 

 

 

Table 3-1,

 

 

 

 

 

 

 

 

“Motor, Coil

 

 

 

 

 

 

 

 

Resistance,”

 

 

 

 

 

 

 

 

on page 39)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The pump

 

Check the

 

Exchange the

 

 

Used ink does

 

tube is

 

 

Defective

 

 

 

tube visually.

 

tube.

 

 

crashed.

 

 

 

not drain to

 

 

 

 

 

pump

 

 

 

 

 

 

 

 

the waste ink

 

The cap is

 

Check the

 

Change the

absorption.

 

 

 

 

 

pad.

 

 

 

 

 

 

damaged or

 

tube visually.

 

cap

 

 

 

 

deformed.

 

 

 

mechanism.

 

 

 

 

 

 

 

 

 

Table 3-11. Repair of the Printer Mechanism

Symptom

 

Condition

 

Cause

 

Check Point

 

Solution

 

 

 

 

 

 

 

 

 

 

 

 

 

Foreign

 

Check visually

 

 

 

 

 

 

substances

 

 

Remove any

 

 

 

 

 

if there is any

 

 

 

 

 

are loaded in

 

 

foreign

 

 

 

 

 

substances or

 

 

 

 

 

the CR drive

 

 

objects.

 

 

 

 

 

not.

 

 

 

 

 

gears.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Carriage

 

 

 

Check the

 

 

 

 

 

 

 

inner coil

 

 

 

 

operation is

 

 

 

 

 

 

 

 

 

 

resistance and

 

 

 

 

abnormal

 

 

 

 

 

 

 

 

 

 

see if there is

 

 

 

 

when tuning

 

 

 

 

 

 

 

 

 

 

any

 

 

 

 

on the power.

 

The CR motor

 

 

Exchange the

 

 

 

 

disconnection

 

 

 

 

 

 

 

 

 

 

 

is defective.

 

 

CR motor.

 

 

 

 

 

of the coil.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Table 3-1,

 

 

 

 

 

 

 

 

“Motor, Coil

 

 

Abnormal

 

 

 

 

 

Resistance,”

 

 

 

 

 

 

 

on page 39)

 

 

carriage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

operation.

 

 

 

 

 

Manually

 

 

 

 

 

 

 

 

move the

 

 

 

 

 

 

 

 

carriage and

 

Exchange the

 

 

 

 

 

 

check if it

 

tube.

 

 

 

 

 

 

moves

 

 

 

 

Carriage

 

 

 

smoothly.

 

 

 

 

operation is

 

 

 

 

 

 

 

 

 

Carriage

 

 

 

Repair the

 

 

abnormal

 

 

Check the

 

 

 

 

movement is

 

 

tension

 

 

during the

 

 

tension of the

 

 

 

 

not smooth.

 

 

mechanism or

 

 

printing

 

 

timing belt.

 

 

 

 

 

 

 

replace it.

 

 

operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check if there

 

Remove any

 

 

 

 

 

 

is any foreign

 

 

 

 

 

 

 

 

foreign

 

 

 

 

 

 

substances on

 

 

 

 

 

 

 

 

objects.

 

 

 

 

 

 

the carriage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

path.

 

 

 

 

 

 

 

 

 

 

 

Troubleshooting

Unit Repair (Printer Mechanism)

47

Page 52
Image 52
Epson Photo750 manual Unit Repair Printer Mechanism, Repair of the Printer Mechanism