Uneven Image Density (In Feeding Direction) - Toshiba e-STUDIO2330C Service Manual

26.5.18 Uneven image density (in feeding direction)

Cause/Section Step
Main charger 1
Transfer unit 2
3
4
5
Laser optical unit 6
Discharge lamp 7
8
Developer unit 9
10
11
Scanner section 12
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
Fig. 26-17
Check items
Is the main charger dirty?
Is the transfer belt or 1st/2nd transfer
rollers dirty?
Is the transfer belt in proper contact with
the drum?
Is 2nd transfer roller in proper contact with
the transfer belt? (Is the roller tilted?)
Is there any abnormalities or deformation
on the transfer belt?
Is there foreign matter or dust on the slit
glass?
Is the discharge lamp dirty?
Has any LED of discharge lamp gone
out?
Is the magnetic brush in proper contact
with the drum?
Is the developer unit pressure spring
applying properly?
Is the transport of developer material
poor?
a. Is the platen cover or RADF open?
b. Is the original glass, mirrors, or lens
dirty?
26 - 144
Measures
Clean it or replace the needle electrode.
Clean the belt.
Correct it.
Correct it.
Replace the transfer belt.
Clean the slit glass.
Clean it.
Replace it.
Adjust the doctor-sleeve gap.
Check the pressure spring.
Remove foreign matter if any.
a. Close the platen cover or RADF.
b. Clean them.
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