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

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

Main 
code

Sub 

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Title

Phenomenon

Display

Lamp

Message

Details

The entered account 
name of the POP3 server 
or the password for 
authentication is invalid.
POP3 server 
authentication check 
error

Section

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Improper connection of 
the network cable

Remedy

Check connection of the 
network cable.

Note 

Case 2

Trouble 
position/
Cause

Improper account name 
or password registered in 
the POP3 server

Remedy

Check that the account 
name or the password 
registered for the POP3 
server is correct.

Note 

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Phenomenon

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Lamp

Message

Details

The specified mail server 
(POP3) suspends 
response.
POP3 server time-out 
error

Section
Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

Improper connection of 
the network cable

Remedy

Check connection of the 
network cable.

Note 

Case 2

Trouble 
position/
Cause
Remedy

An error occurs in the 
POP3 server.

Note 

Check for any error in the 
POP3 server.

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Phenomenon

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Message

Details

CIS shading trouble 
(White correction)
When the power is 
turned on or when the 
proper gain setup value 
is not obtained with SIM 
63-2 CIS shading (Retry 
number: 256 times):
CIS white reference plate 
scan level is abnormal 
when the lamp is lighted.

Section

Scanner

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Defective installation of 
the harness to the CIS 
unit
CIS unit abnormality

Remedy

CIS unit harness check

Note 

Case 2

Trouble 
position/
Cause

Reference white plate 
dirt

Remedy

Clean the reference 
white plate.

Note 

Case 3

Trouble 
position/
Cause

CIS lighting trouble

Remedy

Use SIM 5-3 to check the 
light quantity of CIS.

Note 

Case 4

Trouble 
position/
Cause

Scanner PWB 
abnormality

Remedy

Scanner PWB check

Note 

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Sub 

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Title

Phenomenon

Display

Lamp

Message

Details

CIS communication 
trouble
When an error occurs in 
an access check to the 
CIS-ASIC on turning on 
the power or closing the 
DSFP cover. (Retry 
number: 5 times)
Communication trouble 
between the scanner 
PWB and the CIS-ASIC. 
(Clock synchronization)

Section

Scanner

Operation 
mode

Note