MX-B201D (serv.man9). Service Manual (October 2011). - Sharp Copying Equipment Service Manual (repair manual). Page 118

MX-B201/B201D  SIMULATION, TROUBLE CODES  10 - 43

：'11/Oct/17

E1

82

Content Network board communication interface 

error (Overrun)

Detail

An overrun error occurs in communication 
between the MCU and the network board.

Cause

Improper connection of the network board 
cable
Improper firmware
Network board abnormality
MCU abnormality

Check 
and 
remedy

Check connection of the network board 
cable.
Update firmware.
Replace the MCU and network board with 
new one.

84

Content Network board communication interface 

error (Framing)

Detail

A framing error occurs in communication 
between the MCU and the network board.

Cause

Improper connection of the network board 
cable
Improper firmware
Network board abnormality
MCU abnormality

Check 
and 
remedy

Check connection of the network board 
cable.
Update firmware.
Replace the MCU and network board with 
new one.

E7

01

Content Image data error

Detail

1) The memory capacity for the duplex 

model machine is improper.
Insufficient memory capacity

2) Duplex setting for the single-surface 

model.

Cause

1) The memory capacity on the MCU PWB 

is improper.

2) Wrong setting for the single-surface 

model.

Check 
and 
remedy

1) Use SIM26-39 to check to confirm that the 

memory capacity is 64MB. If it is not 
64MB, replace the MCU PWB.

2) If SIM26-04 is set to 1, set it to 0. If the 

setting is 0, replace the MCU PWB.

06

Content Image data decode error

Detail

Image expansion error

Cause

MCU PWB error
USB cable trouble

Check 
and 
remedy

Replace the MCU PWB.
Replace the USB cable.

10

Content Shading trouble (Black correction)

Detail

The CCD black scan level is abnormal when 
the shading.

Cause

Improper connection of the CCD unit flat 
cable
CCD unit abnormality
MCU PWB abnormality

Check 
and 
remedy

Check connection of the CCD unit flat cable.
Check the CCD unit.

Main 
code

Sub 

code

Details of trouble

E7

11

Content Shading trouble (White correction)
Detail

The CCD white scan level is abnormal when 
the shading.

Cause

Improper connection of the CCD unit flat 
cable
Dirt on the mirror, the lens, and the reference 
white plate
Copy lamp lighting abnormality
CCD unit abnormality
MCU PWB abnormality
(When occurred in the SPF/RSPF scan 
position.)
Improper installation of the mirror unit

Check 
and 
remedy

Clean the mirror, lens, and the reference 
white plate.
Check the light quantity and lighting status of 
the copy lamp (SIM 05-03).
Check the MCU PWB.

16

Content Abnormal laser output

Detail

When the laser output is stopped, HSYNC is 
detected.

Cause

Laser abnormality
MCU PWB abnormality.

Check 
and 
remedy

Check the laser emitting diode operation.
Replace the MCU PWB.

20

Content LSU trouble

Detail

The BD signal from the LSU cannot be 
detected in a certain cycle. (Always OFF or 
always ON)

Cause

LSU connector or LSU harness defect or 
disconnection
Polygon motor rotation abnormality
Laser beams are not generated.
MCU PWB abnormality.

Check 
and 
remedy

Check connection of the LSU connector.
Execute SIM 61-03 to check the LSU 
operations.
Check that the polygon motor rotates 
normally.
Check that the laser emitting diode 
generates laser beams.
Replace the LSU unit.
Replace the MCU PWB.

F2

64

Content Toner supply abnormality
Detail

The maximum toner supply time is greatly 
exceeded.

Cause

CRUM chip trouble
Improper developing unit

Check 
and 
remedy

Replace the CRUM chip.
Replace the developing unit.

70

Content Improper cartridge
Detail

The destination of the main unit differs from 
that of the CRUM.
When the life cycle information is other than 
Not Used (FFh).

Cause

CRUM chip trouble
Improper developing unit

Check 
and 
remedy

Replace the CRUM chip.
Replace the developing unit.

Main 
code

Sub 

code

Details of trouble