Toner Cartridge Crum Error; Paper Feed Tray 1 Lift Operation Trouble; Paper Feed Tray 2 Lift Operation Trouble; Paper Feed Tray 3 Lift Operation Trouble - Sharp MX-M264U Service Manual

F2-74

Toner cartridge CRUM error

Trouble content
Detail PCU
Cause Toner cartridge (CRUM) trouble.
PCU PWB trouble.
Connector and harness trouble between PCU PWB
and toner cartridge
Check & Remedy Replace the toner cartridge.
Replace the PCU PWB.
Check the connector and the harness between the
PCU PWB and the toner cartridge.
F3-12

Paper feed tray 1 lift operation trouble

Trouble content C1LUD is not turned ON within the specified time.
Detail PCU
Cause C1LUD is not turned ON within the specified time.
C1LUD sensor trouble.
Paper feed tray 1 lift unit trouble.
PCU PWB trouble.
Sensor harness and connector connection trouble
Check & Remedy Check connection of the harness and the connector
of C1LUD.
Replace the lift-up unit.
Replace the PCU PWB.
F3-22

Paper feed tray 2 lift operation trouble

Trouble content C2LUD does not turn ON within the specified time.
Detail PCU
Cause C2LUD does not turn ON within the specified time.
C2LUD sensor trouble.
Paper feed tray 2 lift unit trouble.
PCU PWB trouble.
Sensor harness and connector connection trouble
Check & Remedy Check the harness and the connector of C2LUD.
Replace the lift-up unit.
Replace the PCU PWB.
F3-32

Paper feed tray 3 lift operation trouble

Trouble content C3LUD does not turn ON within the specified time.
Detail PCU
Cause C3LUD does not turn ON within the specified time.
C3LUD sensor trouble.
Paper feed tray 3 lift unit trouble.
PCU PWB trouble.
Sensor harness and connector connection trouble
Check & Remedy Check the harness and the connector of C3LUD.
Replace the lift-up unit.
Replace the PCU PWB.
F3-42 Paper feed tray 4 lift operation trouble
Trouble content C4LUD does not turn ON within the specified time.
Detail PCU
Cause C4LUD does not turn ON within the specified time.
C4LUD sensor trouble.
Paper feed tray 4 lift unit trouble.
PCU PWB trouble.
Sensor harness and connector connection trouble
Check & Remedy Check the harness and the connector of C4LUD.
Replace the lift-up unit.
Replace the PCU PWB.
F6-00
Trouble content
Section
Case 1
Case 2
Case 3
Case 4
F6-01
Trouble content
Section
Case 1
Case 2
F6-04
Trouble content
Section
Case 1
Case 2
F6-21
Trouble content
Section
Case 1
Case 2
MX-M264U TROUBLESHOOTING 7 – 12
MFPC PWB - FAX communication
trouble
MFP - FAX communication establishment error /
Framing / Parity / Protocol error
MFP
Cause FAX control PWB trouble.
Check Replace the FAX control PWB.
and
Remedy
Cause FAX control PWB - MFPC PWB connector and
harness trouble
Check Check the connector and the harness between the
and FAX control PWB and the MFPC PWB.
Remedy
Cause FAX control PWB - Mother board connector and
harness trouble
Check Check the connector and the harness between the
and FAX control PWB and the mother board.
Remedy
Cause FAX control PWB ROM trouble / ROM pin breakage
Check Check the ROM of the FAX control PWB.
and
Remedy
FAX control PWB EEPROM read/write
error
FAX control PWB EEPROM access error (Read and
write)
FAX
Cause FAX control PWB EEPROM trouble
Check Check that no trouble occurs after replacement of
and EEPROM. Execute the memory check of SIM66-3 to
Remedy insure that EEPROM can be accessed.
Cause FAX control PWB EEPROM access circuit trouble
Check Replace the FAX control PWB.
and
Remedy
FAX MODEM operation trouble
FAX control PWB MODEM chip operation trouble
FAX
Cause FAX MODEM chip operation trouble.
Check Replace the FAX control PWB.
and
remedy
Cause The FAX MODEM chip cannot be accessed.
Check Replace the FAX control PWB.
and
Remedy
Improper combination of TEL/LIU
PWB and FAX soft switch
Incompatibility between the TEL/LIU PWB and the
FAX control PWB information (soft switch)
MFP
Cause The destination of the TEL/LIU PWB installed is
improper.
Check Check the destination of the TEL/LIU PWB.
and
Remedy
Cause TEL/LIU PWB trouble.
Check Replace the TEL/LIU PWB.
and
Remedy