Toshiba e-STUDIO657 - 8.4.14 White spots

e-STUDIO556/656/756/856/557/657/757/857 © 2011 - 2014 TOSHIBA TEC CORPORATION All rights reserved
ERROR CODE AND TROUBLESHOOTING
8 - 252
8.4.14 White spots
Fig. 8-14
Defective area Step Check items Prescription
Toner empty 1 Is the toner supply symbol lighting? Replace the toner cartridge.
2 Is the toner cartridge installed
properly?
Check the installation state of the
toner cartridge.
3 Is the performance of the new toner
supply motor normal?
Check the performance of the new
toner supply motor.
4 Is the toner cartridge normal? Check the toner cartridge.
Replace if it is not normal.
Decreasing toner density 5 Is the Auto-toner sensor connected
correctly?
Check the connection of the
connector of the Auto-toner sensor.
6 Is the toner density low? Correct the toner density.
(Note 2: See 'Toner density
correcting method'.)
Developer material/Toner/
Photoconductive drum
7 Using the specified developer
material, toner and photoconductive
drum?
Use the specified developer material,
toner and photoconductive drum.
8 Have the developer material and the
photoconductive drum reached their
PM life?
Replace the developer material and
photoconductive drum.
9 Is the storage environment of the
toner cartridge 35°c or less without
dew?
Use the toner cartridge stored in the
environment within specification.
10 Is there any dent on the surface of
the photoconductive drum?
Replace the drum.
11 Is there any film forming on the
photoconductive drum?
Clean or replace the drum.
Main charger 12 Is there any foreign object on the
charger?
Remove it.
13 Is the charger dirty or deformed? Clean or replace the main charger
wire and grid.
Feeding direction