Sharp MX-C250 Service Manual page 187

G. Details of error codes and countermeasures
A0-30 Machine configuration error
Cause IFAX modem PWB is not connected properly
FAX modem PWB is broken
Wireless LAN PWB is not connected properly
Wireless LAN PWB is broken
RSPF/SPF is not connected properly
RSPF/SPF is broken
Check & Remedy Check connection of FAX modem PWB
Replace FAX modem PWB
Check connection of LAN PWB
Replace LAN PWB
Check connection of RSPF/SPF
Replace RSPF/SPF
C1-10 Main charger trouble (BK)
Cause The main charger unit (BK, C, M, Y) is not installed
properly.
There is an abnormality in the main charger unit
(BK, C, M, Y).
Disconnection of the high voltage PWB connector.
Breakage of the high voltage harness.
DV PWB trouble.
MFP PWB trouble
Check & Remedy Check the output of the main charger with SIM8-2.
Check disconnection of the main charger./Replace.
Check disconnection of the high voltage PWB.
connector. /Replace.
Replace the DV PWB.
Replace the MFP PWB.
E7-01 MFP image data error
Cause Image data transfer error in the MFP PWB.
MFP PWB trouble.
Check & Remedy Check connection of the connector and the harness
of the MFP PWB.
Replace the MFP PWB.
E7-10 Shading error (Black correction)
Cause Abnormality in the CIS black scan level when the
copy lamp is turned OFF.
Improper installation of the harness to the CIS unit/
MFP PWB.
Improper installation of the harness to the CIS unit/
AFE PWB.
Improper installation of the harness to the MFP
PWB/AFE PWB.
CIS unit abnormality.
AFE PWB abnormality.
MFP PWB abnormality.
Check & Remedy Check connection of the harness to the CIS unit/
MFP PWB.
Check connection of the harness to the CIS unit/
AFE PWB.
Check connection of the harness to the AFE PWB/
MFPWB.
Check the CIS unit.
Check the AFE PWB.
Check the MFP PWB.
E7-11
Check & Remedy
E7-14
Check & Remedy
E7-20
Check & Remedy
E7-21
Check & Remedy
MX-C250 TROUBLESHOOTING 7 – 6
Shading error (White correction)
Cause Abnormality in the CIS white reference plate scan
level when the scanner lamp is turned ON.
Improper installation of the harness to the CIS unit/
MFP PWB.
Improper installation of the harness to the CIS unit/
AFE PWB.
Improper installation of the harness to the MFP
PWB/AFE PWB.
Dirt on the mirror, lens, and the reference white
plate.
Copy lamp lighting trouble.
CIS unit abnormality.
AFE PWB abnormality.
MFP PWB abnormality.
Check connection of the harness to the CIS unit/
MFP PWB.
Check connection of the harness to the CIS unit/
AFE PWB.
Check connection of the harness to the MFP
PWBAFE PWB.
Check connection of the harness to the Copy lamp
unit.
Clean the mirror, the lens, and the reference white
plate.
Check the CIS unit.
Check the AFE PWB.
MFP PWB
CIS-ASIC error
Cause MFP PWB trouble.
AFE PWB trouble.
MFP PWB trouble.
Improper installation of the harness to the MFP
PWB/AFE PWB.
Check the MFP PWB.
Replace the MFP PWB.
Check the AFE PWB.
Replace the AFE PWB.
Check connection of the harness to the AFE PWB/
MFP PWB.
LSU BD(KC) detection error / LSU LD
deform error (K)
Cause Optical axis shift.
Reduced laser power, lighting error, laser diode
trouble.
BD PWB trouble.
Harness and connector trouble between the LD/
BD(KC) PWB and the LSUcnt PWB.
Use SIM61-1 to check the operation of the LSU.
Check the PWB and connection of the harness in
the LSU.
Replace the LSU.
LSU LD deform error (C)
Cause Reduced laser power, lighting error, laser diode
trouble.
Harness and connector trouble between the LD
PWB and the LSUcnt PWB.
Use SIM61-1 to check the operation of the LSU.
Check the PWB and connection of the harness in
the LSU.
Replace the LSU.
Check the