e-STUDIO556/656/756/856(Ver03) © 2012 TOSHIBA TEC CORPORATION All rights reserved
ERROR CODE AND TROUBLESHOOTING
8 - 236
8.4.16 Uneven image density
Fig. 8-16
Defective area Step Check items Prescription
Main charger 1 Is the main charger dirty? Clean or replace the main charger
grid.
Transfer belt unit 2 Is the surface of the transfer belt
supply roller dirty with toner?
Clean it with alcohol.
Laser optical unit 3 Is there any foreign matter or stain on
the 2 slit glasses?
Remove the foreign matter or stain.
Discharge LED 4 Are the connectors of discharge LED
harness securely connected?
Reconnect the harness securely.
5 Is the discharge LED dirty? Clean the discharge LED.
6 Is any of the discharge LEDs off? Replace the discharge LED.
Developer unit 7 Is the developer material transported
normally?
Remove foreign matters if there is
any.
Scanner section 8 Are the original glass (especially the
position of shading correction plate),
mirror and lens dirty?
Clean them.
Feeding direction
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