AR-M700 (serv.man28). Self diag message and troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 21

AR-M550/M620/M700  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 21

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Finisher/saddle sensor 
connector connection 
trouble
The connector 
connection detection 
input of the guide HP 
sensor is off.
The connector 
connection detection 
input of the push lead 
edge sensor is off.

Section

Finisher

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Finisher control PWB 
trouble
Malfunction caused by 
noises

Remedy

Replace the finisher 
control PWB.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

Finisher/micro switch 
trouble
With all cover PI (photo 
sensor) ON, the transport 
cover MS is off fort 1sec 
continuously from starting 
copying.
With all cover PI (photo 
sensor) ON, the front 
cover MS is off fort 1sec 
continuously from starting 
copying.
With all cover PI (photo 
sensor) ON, the paper 
exit cover MS is off fort 
1sec continuously from 
starting copying.

Section

Finisher

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Finisher control PWB 
trouble
Malfunction caused by 
noises

Remedy

Replace the finisher 
control PWB.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Finisher/inserter 
communication trouble

Section

Inserter

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Improper connection or 
disconnection of the 
connector and the 
harness between the 
finisher and the inserter 
unit

Remedy

Check the connector and 
the harness in the 
communication line.

Note 

Case 2

Trouble 
position/
Cause

Finisher control PWB 
trouble
Control PWB (PCU) 
trouble

Remedy

Replace the finisher 
control PWB.

Note 

Case 3

Trouble 
position/
Cause

Malfunction caused by 
noises

Remedy

Canceled by turning ON/
OFF the power.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

Inserter/EEPROM trouble
Data read failure on 
turning on the power

Section

Inserter

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

EEPROM trouble
Control circuit runaway 
due to noises

Remedy

Check that the EEPROM 
is properly installed.
Replace the inserter 
PWB.

Note 

Case 2

Trouble 
position/
Cause

Inserter PWB EEPROM 
access circuit trouble

Remedy

Replace the inserter 
PWB.

Note