One color is light

User Check

-Check the machine’s environment. High temperature and high humidity conditions can cause this problem.

-Replace the toner cartridge or drum unit with a new one.

-Implement calibration from the control panel.

Step

Cause

Check

Result

Remedy

 

 

 

 

 

1

Dirt on exposure

Are the electrodes of the

Yes

Clean both electrodes.

 

drum electrode

drum unit and the

 

 

 

 

appropriate color and

 

 

 

 

machine body dirty?

 

 

2

Dirt on belt unit

Are the electrodes of the

Yes

Clean both electrodes.

 

electrode

belt unit and the

 

 

 

 

appropriate color and

 

 

 

 

machine body dirty?

 

 

3

Dirt on scanner

Is the scanner windows of

Yes

Wipe the dirt off with a

 

windows

the appropriate color

 

soft, clean, lint free cloth.

 

 

dirty?

 

 

4

Toner sensor

After replacing the toner

No

Replace the toner

 

failure

cartridge of the

 

cartridge of the

 

 

appropriate color with a

 

appropriate color.

 

 

new one, does the same

 

 

 

 

problem occur even after

 

 

 

 

printing several pages?

 

 

5

 

Does the machine start

Yes

- Clean the toner sensor

 

 

printing even after

 

of the appropriate color.

 

 

removing the toner

 

- Check the harness

 

 

cartridge of the

 

connection of the toner

 

 

appropriate color from the

 

sensor PCB ASSY

 

 

drum unit?

 

(TE/NEW) of the

 

 

 

 

appropriate color.

 

 

 

 

- Replace the toner

 

 

 

 

sensor PCB ASSY

 

 

 

 

(TE/NEW) of the

 

 

 

 

appropriate color.

Faulty registration

Step

Cause

Check

Result

Remedy

 

 

 

 

 

1

Registration rear

Does the registration rear

No

Re-assemble the

 

actuator operating

actuator move smoothly?

 

registration rear actuator.

 

smoothly or is it

 

 

 

 

catching.

 

 

 

2

Engine PCB

Is the problem solved after

Yes

Replace the engine PCB

 

failure

replacing the engine PCB

 

ASSY.

 

 

ASSY?

 

 

1-43

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