AR-M700 (serv.man28). Self diag message and troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 25

AR-M550/M620/M700  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 25

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Machine tray 1 lift-up 
trouble
PED does not turn on 
within the specified time.
LUD does not turn on 
within the specified time.
The trouble occurs 3 
times continuously that 
the upper limit sensor 
does not turn on by lift-up 
operation for 21sec when 
inserting a tray or for 2sec 
when printing.
For the first and the 
second times, guide the 
user to pull out the tray in 
case of a tray size error.

Section

Engine

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

PED, LUD trouble
No. 1 tray lift-up motor 
trouble
Improper connection of 
the harness of the PCU 
PWB, the lift-up unit, and 
the paper feed unit

Remedy

Check the harness and 
connector of PED and 
LUD
Lift-up trouble unit check.
Use SIM 15 to cancel the 
trouble.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

Machine tray 2 lift-up 
trouble
MCPED does not turn on 
within the specified time.
MCLUD does not turn on 
within the specified time.
The trouble occurs 3 
times continuously that 
the upper limit sensor 
does not turn on by lift-up 
operation for 10sec when 
inserting a tray or for 
2sec when printing.
For the first and the 
second times, guide the 
user to pull out the tray in 
case of a tray size error.

Section

Engine

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

MCPED, MCLUD trouble
No. 2 tray lift-up motor 
trouble
Improper connection of 
the harness of the PCU 
PWB, the lift-up unit, and 
the paper feed unit

Remedy

Check the harness and 
the connector of MCPED 
and MCLUD.
Lift-up trouble unit check.
Use SIM 15 to cancel the 
trouble.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Machine tray 3 lift-up 
trouble
MCPED does not turn on 
within the specified time.
MCLUD does not turn on 
within the specified time.
The trouble occurs 3 
times continuously that 
the upper limit sensor 
does not turn on by lift-up 
operation for 10sec when 
inserting a tray or for 2sec 
when printing.
For the first and the 
second times, guide the 
user to pull out the tray in 
case of a tray size error.

Section

Engine

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

MCPED, MCLUD trouble
No. 3 tray lift-up motor 
trouble
Improper connection of 
the harness of the PCU 
PWB, the lift-up unit, and 
the paper feed unit

Remedy

Check the harness and 
the connector of MCPED 
and MCLUD.
Lift-up trouble unit check

Note 

Main 
code

Sub 

code

Title