AR-M550 (serv.man16). (9) Self diag message and troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 16

AR-M550/M620  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 16

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Finisher staple shift motor 
trouble
When the stapler shift 
motor does not move 
from the hope position in 
4sec when operating the 
stapler shift motor.
When the stapler shift 
motor does not return to 
the home position in 4sec 
when operating the 
stapler shift motor.

Section

Finisher

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

Motor lock
Motor RPM abnormality
Overcurrent to the motor
Finisher control PWB 
trouble

Remedy

Use SIM 3-3 to check the 
staple shift motor 
operation.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

Finisher load capacity 
sensor trouble
When the received data 
on performing the sensor 
test at turning on the 
power are outside the 
specified range.
When the detected data 
on calculation of the 
correction value are 
outside the specified 
range.

Section

Finisher

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Sensor breakage
Harness disconnection
Console finisher control 
PWB trouble

Remedy

Use SIM 3-2 to check the 
sensor operation.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Finisher/staple motor 
trouble
When the staple unit 
does not shift from HP 
within 0.5sec in staple 
process.
When a stapler jam is 
detected and the staple 
motor is reversed, the 
staple motor does not 
return to HP in 0.5sec.

Section

Finisher

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Motor lock
Motor RPM abnormality
Overcurrent to the motor
Finisher control PWB 
trouble

Remedy

Use SIM 3-3 to check the 
staple shift motor 
operation.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Finisher/pusher motor 
trouble
When learning the paper 
exit roller speed, the 
process is not completed 
in 10sec.
When controlling the 
paper exit roller speed, 
an encoder input is not 
detected in a specified 
time.

Section

Finisher

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Motor lock
Motor RPM abnormality
Overcurrent to the motor
Finisher control PWB 
trouble

Remedy

Use SIM 3-3 to check the 
pusher motor operation 
and the paddle solenoid 
operation, or use SIM 3-2 
to check the boomerang 
rotations sensor.

Note