Sharp AR-M276

AR-M236/M276/M237/M277 TROUBLE CODE LIST 9 - 9
L4 11 Content Shifter motor trouble
Details The shifter home position detection signal
is not detected when the shifter is
operating.
Cause Shifter motor trouble or harness
connection trouble and disconnection
Shifter home position sensor trouble
Check
and
remedy
Check the shifter motor operation with SIM
3-11.
Check connection of the shifter motor
harness/connector.
Replace the shifter motor.
Replace the MCU PWB.
L6 10 Content Polygon motor lock trouble
Details The polygon motor does not rotate.
The motor lock signal is detected for 6sec
or more after the polygon motor rotates.
The motor lock signal is detected for 1sec
during rotation of the polygon motor.
Cause Polygon motor unit failure
Polygon motor connection, harness
trouble or disconnection
MCU PWB failure
Check
and
remedy
Check the polygon motor operation with
SIM 61-1.
Check connector/harness of polygon
motor
Replace the polygon motor.
Replace the MCU PWB.
L8 10 Content Power abnormality detection trouble
Details The power status monitoring signal keeps
power OFF state after passing the
specified time (2sec).
Cause Circuit around the power status monitoring
signal failure.
Check
and
remedy
Check whether power status monitoring
signal on MCU PWB is OPEN or not.
Replace MCU PWB.
U1 01 Content FAX battery error
Details The SRAM backup battery voltage on FAX
PWB falls.
Cause The SRAM backup battery voltage on FAX
PWB falls.
Check
and
remedy
Check voltage of the SRAM back up
battery.
Replace the battery.
02 Content PANEL LOW battery error
Details The voltage of the panel clock function
battery falls.
Cause The voltage of the panel clock function
battery falls.
Check
and
remedy
Check voltage of panel clock function
battery.
Replace the battery.
U2 04 Content EEPROM communication error
Details MCU PWB EEPROM access circuit failure
Cause EEPROM defective
ICU PWB EEPROM access circuit failure
Check
and
remedy
Check that the EEPROM is properly set.
Clear trouble with SIM 16.
Replace the MCU PWB.
Remarks EEPROM abnormality
Trouble
code
Details of trouble
Main
code
Sub
code
U2 20 Content Machine speed code data error
Details The machine (Boot) speed information is
not identical to the model code speed
information.
Cause EEPROM defective
SIM operation error
Check
and
remedy
Check that the machine set with SIM 26-
57 is identical to the model information.
Remarks When the boot program speed code does
not match with the body model
information.
40 Content CRUM chip communication error
Details Error in MCU-CRUM chip communication
Cause CRUM chip failure
Developing unit contact trouble
MCU PWB failure
Check
and
remedy
Replace the CRUM chip.
Check installation of the developing unit.
Clear the trouble with SIM 16.
Replace the MCU PWB.
Remarks CRUM communication error
U7 00 Content RIC communication trouble
Details Error in communication with RIC
Error in communication test after turning
on the power or canceling SIM.
Cause Connector harness contact trouble or
disconnection
RIC control PWB trouble
MCU PWB failure
Malfunction by noises
Check
and
remedy
Check the communication cable,
connectors from the RIC box to the main
body.
U9 00 Content MCU-OPE communication trouble
Details Communication establishment error/
framing/parity/protocol error
Cause Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
Check
and
remedy
Check the connectors and harness of the
operation control PWB and MCU PWB.
Check the grounding of the copier.
Check ROM on the operation control
PWB.
80 Content Operation control PWB communication
trouble (Protocol)
Details Communication trouble between MCU and
the operation control PWB (Protocol error)
Cause Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
Check
and
remedy
Check the connectors and harness of the
operation control PWB and MCU PWB.
Check the grounding of the copier.
Trouble
code
Details of trouble
Main
code
Sub
code