Sharp MX-M260 Service Manual page 86

Trouble
code
Main Sub
code code
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 (PSSTS) failure.
Check Check whether power status monitoring
and signal (PSSTS) on MCU PWB is OPEN or
remedy not.
Replace MCU PWB.
U1 01 Content FAX battery error
Details The SRAM backup battery voltage on FAX
control PWB falls.
Cause The SRAM backup battery voltage on FAX
control PWB falls.
Check Check voltage of the SRAM back up
and battery.
remedy
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 Check voltage of panel clock function
and battery.
remedy
Replace the battery.
U2 04 Content EEPROM communication error
Details EEPROM communication error
Cause EEPROM defect.
ICU PWB EEPROM access circuit failure.
Check Check that the EEPROM is properly set.
and
Clear trouble with SIM 16.
remedy
Replace the MCU PWB.
20 Content Machine speed code data error
Details The machine boot speed information is not
identical to the model code speed
information
Cause EEPROM defect.
SIM operation error.
Check Check for matching of the machine and
and model information setting in SIM26-57.
remedy
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 Check the communication cable,
and connectors from the RIC box to the main
remedy body.
U9 00 Content Operation control PWB communication
trouble
Details Communication trouble between MCU and
the operation control PWB
Cause Operation control PWB connector
disconnection
Harness failure of the operation control
PWB and the MCU PWB
Check Check the connectors and the harness of
and the operation control PWB and MCU PWB.
remedy
Check the grounding of the copier.
Check ROM on the operation control PWB.
Details of trouble
MX-M260/M310/M260N/M310N SELF DIAG AND TROUBLE CODE 7 - 10
Trouble
code
Main Sub
code code
80 Content Operation control PWB communication
U9
trouble (Protocol)
Details Communication trouble between MCU and
the operation control PWB (Protocol error)
Cause Operation control PWB connector
disconnection.
Harness failure of the operation control.
PWB and the MCU PWB.
Check Check the connectors and the harness of
and the operation control PWB and MCU PWB.
remedy
Check the grounding of the copier.
81 Content Operation control PWB communication
trouble (Parity)
Details Communication trouble between MCU and
the operation control PWB (Parity error)
Cause Operation control PWB connector
disconnection.
Harness failure of the operation control
PWB and the MCU PWB.
Check Check the connectors and the harness of
and the operation control PWB and MCU PWB.
remedy
Check the grounding of the copier.
82 Content Operation control PWB communication
trouble (Overrun)
Details Communication trouble between MCU and
the operation control PWB (Overrun error)
Cause Operation control PWB connector
disconnection.
Harness failure of the operation control
PWB and the MCU PWB.
Check Check the connectors and the harness of
and the operation control PWB and MCU PWB.
remedy
Check the grounding of the copier.
84 Content Operation control PWB communication
trouble (Framing)
Details Communication trouble between MCU and
the operation control PWB (Framing error)
Cause Operation control PWB connector
disconnection.
Harness failure of the operation control
PWB and the MCU PWB.
Check Check the connectors and the harness of
and the operation control PWB and MCU PWB.
remedy
Check the grounding of the copier.
88 Content Operation control PWB communication
trouble (Time-out)
Details Communication trouble between MCU and
the operation PWB (Time-out error)
Cause Operation control PWB connector
disconnection.
Harness failure of the operation control
PWB and the MCU PWB.
Check Check the connectors and the harness of
and the operation control PWB and MCU PWB.
remedy
Check the grounding of the copier.
99 Content Operation panel destination error
Details An error occurred in checking the
destination of the operation panel and the
main body.
Cause Erroneous connection the operation panel
unit.
SIM setup error.
Check Check the destination information of the
and operation panel unit and the MCU. (Use
remedy SIM 26-6 for the destination of the body.)
Details of trouble