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November 2003 © TOSHIBA TEC
5 - 127
e-STUDIO3511/4511 TROUBLESHOOTING
(18) Uneven image density
Feeding direction
Cause/Section
Main charger
Transfer unit
Laser optical unit
Discharge lamp
Developer unit
Scanner section
Step
1
2
3
4
5
6
7
8
9
10
11
12
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 deforma-
tion 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 mecha-
nism malfunctioning?
Is the transport of developer material
poor?
a. Is the platen cover or RADF open?
b. Is the original glass, mirrors, or lens
dirty?
Measures
Clean it or replace the charger wire.
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 mechanism.
Remove foreign matter if any.
a. Close the platen cover or RADF.
b. Clean them.
Fig. 5-219
Summary of Contents for e-STUDIO3511
Page 2: ... 2003 TOSHIBA TEC CORPORATION All rights reserved ...
Page 10: ...e STUDIO3511 4511 CONTENTS vi November 2003 TOSHIBA TEC ...
Page 12: ......
Page 20: ...e STUDIO3511 4511 SPECIFICATIONS 1 8 November 2003 TOSHIBA TEC ...
Page 190: ...e STUDIO3511 4511 ERROR CODE AND SELF DIAGNOSTIC MODE 2 170 November 2003 TOSHIBA TEC ...
Page 456: ...e STUDIO3511 4511 TROUBLESHOOTING 5 142 November 2003 TOSHIBA TEC ...
Page 518: ...e STUDIO3511 4511 FIRMWARE UPDATING 6 62 November 2003 TOSHIBA TEC ...
Page 546: ...e STUDIO3511 4511 REMOTE SERVICE 8 24 November 2003 TOSHIBA TEC 7 ...
Page 548: ...e STUDIO3511 4511 WIRE HARNESS CONNECTION DIAGRAMS 9 2 November 2003 TOSHIBA TEC ...
Page 551: ......
Page 552: ...2 17 2 HIGASHIGOTANDA SHINAGAWA KU TOKYO 141 8664 JAPAN ...