AR-M256/M257/M258/M316/M317/M318/5625/5631 TROUBLE CODE LIST 9 - 3
E1
80
Content
IMC PWB communication trouble
(protocol)
Details
Communication trouble between MCU and
IMC PWB (Protocol error)
Cause
IMC PWB connector disconnection.
Motherboard connector pin breakage.
IMC PWB ROM defect, data failure.
Check
and
remedy
Check the connectors of the IMC PWB and
MCU PWB.
Check the grounding of the copier.
Check the ROM of the IMC PWB.
81
Content
IMC PWB communication trouble (Parity)
Details
Communication trouble between MCU and
printer IMC (Parity error)
Cause
IMC PWB connector disconnection.
Motherboard connector pin breakage.
IMC PWB ROM defect, data failure.
Check
and
remedy
Check the connectors of the IMC PWB and
MCU PWB.
Check the grounding of the copier.
Check the ROM of the IMC PWB.
82
Content
IMC PWB communication trouble
(Overrun)
Details
Communication trouble between MCU and
IMC PWB (Overrun error)
Cause
IMC PWB connector disconnection.
Motherboard connector pin breakage.
IMC PWB ROM defect, data failure.
Check
and
remedy
Check the connectors of the IMC PWB and
MCU PWB.
Check the grounding of the copier.
Check the ROM of the IMC PWB.
84
Content
IMC PWB communication trouble
(Framing)
Details
Communication trouble between MCU and
IMC PWB (Framing error)
Cause
IMC PWB connector disconnection.
Motherboard connector pin breakage.
IMC PWB ROM defect, data failure.
Check
and
remedy
Check the connectors of the IMC PWB and
MCU PWB.
Check the grounding of the copier.
Check the ROM of the IMC PWB.
88
Content
IMC PWB communication trouble
(Time-out)
Details
Communication trouble between MCU and
IMC PWB (Time-out error)
Cause
IMC PWB connector disconnection.
Motherboard connector pin breakage.
IMC PWB ROM defect, data failure.
Check
and
remedy
Check the connectors of the IMC PWB and
MCU PWB.
Check the grounding of the copier.
Check the ROM of the IMC PWB.
Trouble
code
Details of trouble
Main
code
Sub
code
E7
02
Content
LSU trouble
Details
BD signal from LSU is not detected in a
constant cycle (Kept OFF or ON)
Cause
LSU connector or LSU inside harness
trouble or disconnection.
Polygon motor rotation abnormality.
Laser does not illuminate.
MCU PWB failure.
Check
and
remedy
Check for disconnection of the LSU
connector.
Check the LSU operation with SIM 61-1.
Check that the polygon motor rotates
normally.
Check laser LED lighting.
Replace the LSU unit.
Replace the MCU PWB.
10
Content
CCD black level error
Details
CCD black reference plate scan level
abnormality when the copy lamp turns off.
Cause
Flat cable installation failure to CCD unit.
CCD unit error.
Check
and
remedy
Check flat cable installation to the CCD
unit.
Check CCD unit.
11
Content
CCD white level error
Details
Improper CCD white reference plate
reading level for copy lamp lighting
Cause
Flat cable installation failure to CCD unit.
Dirt on the mirror, lens, and reference
white plate.
Copy lamp lighting trouble.
CCD unit abnormality.
MCU PWB abnormality. (Occurred in the
RSPF scan position)
Check
and
remedy
Clean the mirror, the lens, and the
reference white plate.
Check the copy lamp light quantity and its
operation. (SIM 5-3)
Check CCD unit.
Check MCU PWB.
12
Content
Shading trouble
Details
White correction is not completed in the
specified number of times.
Cause
Flat cable installation failure to CCD unit.
Dirt on the mirror, lens, and reference.
white plate.
Copy lamp lighting trouble.
CCD unit abnormality.
MCU PWB abnormality.
Check
and
remedy
Clean the mirror, the lens, and the
reference white plate.
Check the copy lamp light quantity and its
operation. (SIM 5-3)
Check CCD unit.
Check MCU PWB.
Trouble
code
Details of trouble
Main
code
Sub
code
