Sharp MX-C300W Service Manual

MX-C250 TROUBLESHOOTING 7 – 10
F2-73 Improper toner cartridge detection
(Y)
F2-74 Toner cartridge CRUM error (BK)
F2-75 Toner cartridge CRUM error (C)
F2-76 Toner cartridge CRUM error (M)
F2-77 Toner cartridge CRUM error (Y)
F3-22 Paper feed tray 2 lift operation trouble
F6-00 Controller - FAX communication
trouble
F6-04 FAX MODEM operation trouble
F6-21 Improper combination of FAX
PWB and FAX soft switch
H2-00 Thermister open trouble
(TH_UM_AD2)
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.
Cause Toner cartridge (CRUM) trouble.
MFPC PWB trouble.
Connector/harness trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
Connector/harness trouble.
Cause Toner cartridge (CRUM) trouble.
MFPC PWB trouble.
Connector/harness trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
Connector/harness trouble.
Cause Toner cartridge (CRUM) trouble.
MFPC PWB trouble.
Connector/harness trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
Connector/harness trouble.
Cause Toner cartridge (CRUM) trouble.
MFPC PWB trouble.
Connector/harness trouble.
Check & Remedy Replace the toner cartridge.
Replace the MFPC PWB.
Connector/harness 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.
Trouble content MFP - FAX communication establishment error /
Framing / Parity / Protocol error
Section MFP
Case 1 Cause FAX control PWB trouble.
Check
and
Remedy
Replace the FAX control PWB.
Case 2 Cause FAX control PWB - MFPC PWB connector and
harness trouble
Check
and
Remedy
Check the connector and the harness between the
FAX control PWB and the MFPC PWB.
Case 3 Cause FAX PWB trouble
Check
and
Remedy
Check/Replace the FAX PWB (The modem chip is
not soldered correctly)
Case 4 Cause FAX PWB trouble
Check
and
Remedy
Check/Replace the FAX PWB (The modem chip is
not soldered correctly)
Trouble content FAX control PWB MODEM chip operation trouble
Section FAX
Case 1 Cause FAX MODEM chip operation trouble.
Check
and
remedy
Replace the FAX control PWB.
Case 2 Cause The FAX MODEM chip cannot be accessed.
Check
and
Remedy
Replace the FAX control PWB.
Trouble content Incompatibility between the FAX PWB and the FAX
control PWB information (soft switch)
Section MFP
Case 1 Cause The destination of the FAX PWB installed is improper.
Check
and
Remedy
Check the destination of the FAX PWB.
Case 2 Cause FAX PWB trouble.
Check
and
Remedy
Replace the FAX PWB.
Cause Thermister trouble.
MFPC PWB trouble
Connection trouble of the connector and the
harness.
Fusing unit not installed.
Check & Remedy Replace the thermister.
Replace the MFPC PWB.
Harness and connector connection trouble.

Sharp MX-C300W Specifications

General

Print Technology	Laser
Print Speed (Black)	30 ppm
Print Speed (Color)	30 ppm
Print Resolution	600 x 600 dpi
Copy Speed (Black)	30 cpm
Copy Speed (Color)	30 cpm
Copy Resolution	600 x 600 dpi
Scan Resolution	600 x 600 dpi
Fax Transmission Speed	33.6 Kbps
Duplex Printing	Yes
Mobile Printing	Yes
Max Paper Size	8.5" x 14"
Connectivity	USB, Ethernet, Wireless
Display	4.3-inch color touchscreen
Weight	29 kg
Scan Type	Flatbed, ADF