■Error code 76

Print Unable 76

Turn the power off and then back on again.

Rapid temperature rising failure (center thermistor)

Error code 78

Print Unable 78

Turn the power off and then back on again.

Rapid temperature falling failure (center thermistor)

Step

Cause

Remedy

 

 

 

1

Fuser unit failure

Replace the fuser unit.

 

 

 

2

Main PCB failure

Replace the main PCB ASSY.

 

 

 

■Error code 7A

Print Unable 7A

See Troubleshooting and routine maintenance chapter in User's Guide.

No detection of main motor synchronous signal

Step

Cause

Remedy

 

 

 

1

Motor failure

Replace the main motor.

 

 

 

2

Main PCB failure

Replace the main PCB ASSY.

 

 

 

■Error code 7D

Drum Error

Open the Front Cover and slide the blue tab across the Drum Unit several times.

Dirt on charged wire (detect discharge error)

User Check

•Clean the corona wire in the drum unit.

•Replace the drum unit with a new one.

Step

Cause

Remedy

 

 

 

 

 

 

1

Dirt or dust on drum unit

Clean the electrodes of the main body and

electrodes

the drum unit. (Refer to Fig. 3-2)

 

 

 

 

2

Charge HVPS PCB failure

Replace the charge HVPS PCB ASSY.

 

 

 

3

Main PCB failure

Replace the main PCB ASSY.

 

 

 

3-21

Confidential