AR-M550/M620/M700 SELF DIAG MESSAGE AND TROUBLESHOOTING 9 - 26
Main
code
Sub
code
Title
Machine tray 4 lift-up trouble
F3 42 Phenomenon Display Lamp
Message
Details Machine tray 4 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. 4 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
38V voltage trouble
F4 38 Phenomenon Display Lamp
Message
Details 38V voltage falls or rises.
Section Engine
Operation
mode
Note
Case 1 Trouble
position/
Cause
Improper connection or
disconnection of the
connector and the
harness
Remedy Check the connector and
the harness of the power
line.
Note
Case 2 Trouble
position/
Cause
PCU PWB trouble
Power unit trouble
Remedy Check 38V power source
in the power unit and the
PCU PWB.
Note
Main
code
Sub
code
Title
MFP control-FAX communication
trouble (MFP control detection)
F6 00 Phenomenon Display Lamp
Message
Details MFP control-FAX
communication trouble
(MFP control detection)
The booting sequence by
the command line
(9600bps, serial) is not
completed normally.
Communication
establishment error/
framing/ parity/ protocol
error
Section FAX
Operation
mode
Note
Case 1 Trouble
position/
Cause
Defective connection of
the slave unit PWB
connector
Defective harness
between the slave unit
PWB and the MFP
control PWB
Slave unit PWB mother
board connector pin
breakage
Remedy Use SIM 25-2 to perform
the automatic developing
adjustment.
Check connection of the
connector between the
slave unit PWB and the
MFP control PWB and
the harness.
Note Check grounding of the
machine.
Case 2 Trouble
position/
Cause
Slave unit ROM trouble/
no ROM/ Reversed
insertion of ROM/ ROM
pin breakage
Remedy Check the ROM on the
slave unit PWB.
Note
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