Toshiba e-STUDIO200L, Service Manual

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e-STUDIO200L/202L/230/232/280/282 TROUBLESHOOTING June 2004 © TOSHIBA TEC
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17)Faded image (low density, abnormal gray balance)
Fig. 5-17
Defective area Step Check items Prescription
Toner empty 1 Is “ADD TONER” symbol lit? Replace the toner cartridge.
Auto-toner circuit 2 Is there enough toner in the car-
tridge? Check the performance of the auto-
toner circuit.
3 Is the toner density in the developer
material too low?
Toner motor 4 Is the toner motor working normally? Check the toner motor and the motor
drive.
Toner cartridge 5 Is there any problem with the toner
cartridge? Replace the toner cartridge.
Developer material 6 Has the developer material reached
its PM life? Replace the developer material.
Developer unit 7 Is the magnetic brush in proper con-
tact with the drum? Check the installation of the devel-
oper unit.
Adjust the doctor-sleeve gap and
polarity.
8 Is the developer sleeve pressuriza-
tion mechanism working? Check the mechanism.
Main charger 9 Is the main charger dirty? Clean it or replace the needle elec-
trode and main charger grid.
Drum 10 Is “film-forming” occurring on the
drum surface? Clean or replace the drum.
11 Has the drum reached its PM life? Replace the drum.
Transfer charger 12 Is the transfer charger wire cut off? Replace the transfer charger wire.
High-voltage transformer 13 Is the setting for the high-voltage
transformer proper? Adjust the output from the high-volt-
age transformer.
14 Are the connectors of the high-volt-
age harness securely connected? Is
the harness open circuited? Reconnect the harness securely.
Replace the high-voltage harness.
Discharge LED 15 Are the connectors of discharge LED
harness securely connected? Reconnect the harness securely.
Feeding direction