Sharp MX-4100N Service Manual page 303
Digital full color multifunctional system
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Also See for MX-4100N:
- Operation manual (903 pages) ,
- Quick start manual (120 pages) ,
- Software setup manual (44 pages)
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F2-72
Improper toner cartridge detection
(MAGENTA)
Trouble content
Detail
PCU
Cause
An improper toner cartridge is inserted. (The main
unit detects a toner cartridge of a different
specification.)
Toner cartridge trouble.
PCU PWB trouble.
Check & Remedy
Replace the toner cartridge.
Replace the PCU PWB.
F2-73
Improper toner cartridge detection
(YELLOW)
Trouble content
Detail
PCU
Cause
An improper toner cartridge is inserted. (The main
unit detects a toner cartridge of a different
specification.)
Toner cartridge trouble.
PCU PWB trouble.
Check & Remedy
Replace the toner cartridge.
Replace the PCU PWB.
F2-74
Black CRUM error
Trouble content
Detail
PCU
Cause
Toner cartridge (CRUM) trouble.
PCU PWB trouble.
Connector/harness trouble.
Check & Remedy
Replace the toner cartridge.
Replace the PCU PWB.
Connector/harness trouble.
F2-75
Cyan CRUM error
Trouble content
Detail
PCU
Cause
Toner cartridge (CRUM) trouble.
PCU PWB trouble.
Connector/harness trouble.
Check & Remedy
Replace the toner cartridge.
Replace the PCU PWB.
Connector/harness trouble.
F2-76
Magenta CRUM error
Trouble content
Detail
PCU
Cause
Toner cartridge (CRUM) trouble.
PCU PWB trouble.
Connector/harness trouble.
Check & Remedy
Replace the toner cartridge.
Replace the PCU PWB.
Connector/harness trouble.
MX-5001N SELF DIAG AND TROUBLE CODE 7 – 17
F2-77
Yellow CRUM error
Trouble content
Detail
PCU
Cause
Toner cartridge (CRUM) trouble.
PCU PWB trouble.
Connector/harness trouble.
Check & Remedy
Replace the toner cartridge.
Replace the PCU PWB.
Connector/harness trouble.
F2-78
Registration image density sensor
trouble (Transfer belt substrate
reflection rate abnormality)
Trouble content
Detail
PCU
Cause
Image density (registration) sensor trouble (Sensor
sensitivity adjustment trouble).
PCU PWB trouble.
Connection trouble of the connector and the
harness.
Image density (registration) sensor dirt.
Transfer belt dirt, scratch.
Check & Remedy
Replace the image density (registration) sensor.
Replace the PCU PWB.
Check connection of the connector and the harness.
Clean the image density (registration) sensor.
Clean or replace the transfer belt.
F3-12
Paper feed tray 1 lift operation trouble
Trouble content
Detail
PCU
Cause
LUD1 is not turned ON within the specified time.
CLUD1 sensor trouble
Paper feed tray 1 lift unit trouble.
PCU PWB trouble.
Harness and connector connection trouble.
Check & Remedy
Check connection of the harness and the connector
of LUD1.
Replace the lift-up unit.
Replace the PCU PWB.
F3-22
Paper feed tray 2 lift operation trouble
Trouble content
LUD2 does not turn ON within the specified time.
Detail
PCU
Cause
LUD2 does not turn ON within the specified time.
CLUD2 sensor trouble.
Paper feed tray 2 lift unit trouble.
PCU PWB trouble.
Harness and connector connection trouble.
Check & Remedy
Check the harness and the connector of LUD2.
Replace the lift-up unit.
Replace the PCU PWB.
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