■Poor fixing

<User Check>

- Replace the drum unit with a new one.

- Replace the toner cartridge with a new one.

Step

Cause

Check

Result

Remedy

 

 

 

 

 

 

High pressure of

Is the problem solved by

 

Change the position of the

1

pressure roller in

changing the position of

Yes

anti-curl lever.

 

the fuser unit

the anti-curl lever?

 

 

 

 

 

 

 

 

Fuser unit failure

Is the problem solved

 

Replace the fuser unit.

2

 

after replacing the fuser

Yes

 

 

 

unit?

 

 

 

 

 

 

 

 

Toner sensor

Is the "Toner life End"

 

Replace the toner sensor.

 

failure

message indicated on

 

 

3

 

the LCD after replacing

No

 

 

the current toner

 

 

 

 

 

 

 

cartridge with a new

 

 

 

 

one?

 

 

 

 

 

 

 

 

HVPS PCB

Is the problem solved

 

Replace the HVPS PCB

4

failure

after replacing the

Yes

ASSY.

 

 

HVPS PCB ASSY?

 

 

 

 

 

 

 

 

Main PCB failure

Is the problem solved

 

Replace the main PCB

5

 

after replacing the main

Yes

ASSY.

 

 

PCB ASSY?

 

 

 

 

 

 

 

 

Low-voltage

Is the problem solved

 

Replace the PS PCB unit.

6

power supply

after replacing the PS

Yes

 

 

PCB failure

PCB unit?

 

 

 

 

 

 

 

3-48

Confidential