M-12 - Page 214

Confidential

9-26

M-12 

Maximum speed is slow. 

Possible cause 

Step 

Check 

Result

Remedy 

Two or more 
sheets of the 
paper in the 
tray are pulled 
to feed. 

1 

Does paper double feeding 
occur? 

Yes  Replace the separation pad. 

Foreign body 
attached to the 
tail edge 
actuator 

2 

Is a foreign body caught on 
the tail edge actuator? 

Yes  Remove a foreign body. 

Tail edge 
actuator 
failure 

3 

Is the tail edge actuator 
deformed? 

Yes  Replace the tail edge actuator. 

Tail edge 
sensor 
malfunction 

4 

Is the tail edge sensor 
turned ON? 

Yes  Replace the tail edge sensor. 

M-13 

Error indication when turning the power ON 

Possible cause 

Step 

Check 

Result

Remedy 

Disconnection 
of the main 
motor harness 

1 

Is the harness of the main 
motor connected? 

No 

Reconnect the harness securely. 

Disconnection 
of the scanner 
motor harness 

2 

Is the harness of the 
scanner motor connected? 

No 

Reconnect the harness securely. 

Fixing unit 
failure 

3 

Does the printer resume 
after opening the cover, 
turning the power ON and 
leaving the printer for ten 
minutes? 

No 

Replace the thermistor. 

M-14 

The printer stops while idling. 

Possible cause 

Step 

Check 

Result

Remedy 

Front cover 
failure 

1 

Is the cover opened by 
vibration during idling? 

Yes  Replace the front cover. 

New toner 
detection 
switch failure 

2 

Does the new toner 
detection switch work 
correctly? 

No 

Replace the new toner detection 
switch. 

Process unit 
terminal 
failure 

3 

Are the terminals of the 
process unit dirty? 

Yes  Clean the terminals. 

Laser unit 
failure 

4 

Does the laser unit work 
correctly? 

No 

Replace the laser unit.