Improper Toner Cartridge Detection - Sharp MX-C250 Service Manual

F2-73

Improper toner cartridge detection

(Y)
Cause An improper toner cartridge is inserted. (The main
unit detects a toner cartridge of a different
specification.)
Toner cartridge trouble.
MFPC PWB trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
F2-74 Toner cartridge CRUM error (BK)
Cause Toner cartridge (CRUM) trouble.
MFPC PWB trouble.
Connector/harness trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
Connector/harness trouble.
F2-75 Toner cartridge CRUM error (C)
Cause Toner cartridge (CRUM) trouble.
MFPC PWB trouble.
Connector/harness trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
Connector/harness trouble.
F2-76 Toner cartridge CRUM error (M)
Cause Toner cartridge (CRUM) trouble.
MFPC PWB trouble.
Connector/harness trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
Connector/harness trouble.
F2-77 Toner cartridge CRUM error (Y)
Cause Toner cartridge (CRUM) trouble.
MFPC PWB trouble.
Connector/harness trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
Connector/harness trouble.
F3-22 Paper feed tray 2 lift operation trouble
Cause LUD1 is not turned ON within the specified time.
C2LUD1sensor trouble
Paper feed tray 2 lift unit trouble.
MFPC PWB trouble.
Harness and connector connection trouble.
Check & Remedy Check connection of the harness and the
connector of C2LUD.
Replace the lift-up unit.
Replace the MFPC PWB.
F6-00
Trouble content
Section
Case 1
Case 2
Case 3
Case 4
F6-04
Trouble content
Section
Case 1
Case 2
F6-21
Trouble content
Section
Case 1
Case 2
H2-00
Check & Remedy
MX-C250 TROUBLESHOOTING 7 – 10
Controller - 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 PWB trouble
Check Check/Replace the FAX PWB (The modem chip is
and not soldered correctly)
Remedy
Cause FAX PWB trouble
Check Check/Replace the FAX PWB (The modem chip is
and not soldered correctly)
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 FAX
PWB and FAX soft switch
Incompatibility between the FAX PWB and the FAX
control PWB information (soft switch)
MFP
Cause The destination of the FAX PWB installed is improper.
Check Check the destination of the FAX PWB.
and
Remedy
Cause FAX PWB trouble.
Check Replace the FAX PWB.
and
Remedy
Thermister open trouble
(TH_UM_AD2)
Cause Thermister trouble.
MFPC PWB trouble
Connection trouble of the connector and the
harness.
Fusing unit not installed.
Replace the thermister.
Replace the MFPC PWB.
Harness and connector connection trouble.