Toshiba e-Studio 855

Troubleshooting. Image. 21 Uneven light distribution, Blotched image

21.Uneven light distribution

 

Defective area	Step	Check items	Prescription
Original glass	1	Is the original glass dirty?	Clean the original glass.
Main charger	2	Are the needle electrode, main charger grid and main charger case dirty?	Clean or replace them.
Discharge LED	3	Is the discharge LED dirty?	Clean the discharge LED.
	4	Is any of the discharge LEDs off?	Replace the discharge LED.
Scanner	5	Are the reflector, exposure lamp, mirrors, lens, and original glass (especially the position of shading correction plate) dirty?	Clean them.
Exposure lamp	6	Is the exposure lamp discolored or degraded?	Replace the exposure lamp.

22.Blotched image

 

Defective area	Step	Check items	Prescription
Paper	1	Is the paper type corresponding to its mode?	Check the paper type and mode.
	2	Is the paper too dry?	Change the paper.
Transfer belt unit	3	Is the surface of the transfer belt supply roller dirty with toner?	Clean it with alcohol.
	4	Does the transfer belt exceed its normal life span?	Replace the transfer belt.
High-voltage transformer (Transfer charger)	5	Is the output from the high-voltage transformer normal?	Adjust the output. Replace the transformer if necessary.