Toshiba e-Studio 855

Troubleshooting. Image. 15 Poor image transfer, Uneven image density

15.Poor image transfer

 

Defective area	Step	Check items	Prescription
Transfer belt unit	1	Is the surface of the transfer belt supply roller dirty with toner?	Clean it with alcohol.
Paper	2	Is the paper in the drawer or LCF/ PFP curled?	Reinsert the paper with the reverse side up or change the paper.
	3	Is the paper in the drawer or LCF damp?	Avoid storing paper in damp place.
	4	Is the paper type corresponding to its mode?	Select the proper mode.
	5	Using the recommended paper?	Use the recommended paper.
Registration roller	6	Is there any abnormality related to the registration roller or with the roller itself?	Clean the roller if it is dirty. Securely attach the springs if they are detached. Replace the clutch if it is defective. Adjust the rotation speed of the roller.
High-voltage transformer (Transfer charger)	7	Is the high-voltage transformer output defective?	Replace the transformer.

16.Uneven image density

 

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.