Faded Image; Low Density, Color Reproduction Defect, Gray Balance Defect - Toshiba FC-22 Manual

(19) Faded image (low density, color reproduction defect, gray balance defect)
Cause/Defect area Step
Toner empty 1
Auto-toner circuit 2
3
Toner motor 4
Toner cartridge 5
Developer material 6
Developer unit 7
Main charger 8
Drum 9
High-voltage transformer 10 High-voltage transformer settings im-
January 2000 © TOSHIBA TEC
Check items
"ADD TONER" symbol flashing?
Enough toner in cartridge?
Toner density in developer material too
low?
Toner motor malfunctioning?
Any abnormalities in toner cartridge?
Developer material life ended?
Magnetic brush in proper contact with
drum?
Main charger dirty?
Film formed on drum surface?
proper?
4 - 75
Measures
Replace toner cartridge.
Check auto-toner circuit function.
Check motor drive circuit.
Replace toner cartridge.
Replace developer material.
Check developer unit installation.
Adjust doctor-sleeve gap and pole position.
Clean it or replace charger wire.
Clean or replace drum.
Adjust high-voltage transformer output.
FC-22 TROUBLESHOOTING