AR-M700 (serv.man28). Self diag message and troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 28

: Feb. 9 2004

AR-M550/M620/M700  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 28

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

The FAX-BOX PWB is 
not one for the AR-FX8. 
(FAX detection)
If the FAX-BOX modem 
controller PWB 
information (hard 
detection) is not for the 
AR-FX8, it is judged as 
an error.

Section

FAX

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

Because the FAX-BOX 
modem controller PWB 
information (hard 
detection) is not for the 
AR-FX8. (The modem 
controller PWB for the 
AR-FX5 or the AR-FX6 is 
used.)

Remedy

Check the FAX-BOX 
modem controller PWB.
Replace it with a modem 
controller PWB for the 
AR-FX8.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

Combination error of the 
FAX-BOX destination 
information and the 
machine destination 
information
When the destination 
information stored in the 
FAX-BOX EEPROM is 
compared with that of the 
machine, and if the 
combination is improper, 
it is judged as an error.

Section

FAX

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

Because of improper 
combination between the 
destination information 
stored in the EEPROM on 
the FAX-BOX PWB and 
that of the machine (set 
with SIM 26-6).

Remedy

Check the destination of 
the FAX-BOX.
Check the machine 
destination with SIM 26-6.
Use a proper combination 
of the machine and the 
FAX-BOX.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

FAX board EEPROM 
read/write error
ACK from the EEPROM 
cannot be checked.

Section

FAX

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

EEPROM trouble
FAX PWB EEPROM 
access circuit trouble

Remedy

Replace the EEPROM.
Re-setup the soft SW.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

PRT centro port check 
error

Section

Controller

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

Centro port trouble
MFP controll PWB 
trouble

Remedy

Replace the MFP controll 
PWB.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Thermistor open (An 
input voltage of 2.95V or 
above is detected.)
Fusing unit not installed

Section

Engine

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Thermistor trouble
Control PWB trouble
Improper connection of 
the fusing section 
connector
AC power trouble
Fusing unit not installed

Remedy

Check the harness and 
the connector between 
the thermistor and the 
control PWB.
Use SIM 14 to clear the 
self diag display.

Note