AR-M700 (serv.man28). Self diag message and troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 27

AR-M550/M620/M700  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 27

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

FAX expansion Flash 
memory trouble (MFP 
control detection)
The expansion flash 
memory inserted to the 
FAX I/F PWB could not 
be cleared.

Section

FAX

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

Initialization of the FAX 
expansion memory failed, 
which is required for a 
new memory that is 
inserted to the PWB.

Remedy

Use SIM 66-10 to clear 
the expansion flash 
memory.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

FAX modem operation 
abnormality
The initializing process of 
the modem chip in the 
FAX PWB is not 
completed normally.

Section

FAX

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

SW101 in the FAX PWB 
tries to perform normal 
operation on the boot 
side.

Remedy

Set SW101 on the FAX 
PWB to other than the 
boot side, and turn on the 
power again.

Note 

Case 2

Trouble 
position/
Cause

FAX PWB modem chip 
operation trouble

Remedy

Replace the FAX PWB.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

The write protect jumper 
of the FAX interface PWB 
is released.

Section

FAX

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

The FAX write protect pin 
is set to Write Enable.

Remedy

Check the write protect 
pin in the FAX interface 
PWB.

Note 

Case 2

Trouble 
position/
Cause

FAX interface PWB 
trouble
FAX PWB trouble

Remedy

Replace the FAX PWB. 
Replace the FAX 
interface PWB.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Combination error of TEL/
LIU PWB and software
If the destination of the 
installed TEL/LIU PWB 
differs from that of the 
FAX soft switch, it is 
judged as an error.

Section

FAX

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

The destination of the 
installed TEL/LIU PWB 
differs.
The FAX PWB 
information (soft switch) 
differs.

Remedy

Check the destination of 
the TEL/LIU PWB.
Check the FAX PWB 
information (soft switch).

Note 

Case 2

Trouble 
position/
Cause

TEL/LIU PWB trouble

Remedy

Replace the TEL/LIU 
PWB.

Note