Toshiba e-STUDIO2820C Service Handbook page 134

Developer material
Item to be adjusted
3.1.2 Adjustment of the auto-toner sensor
Item to be adjusted
3.1.3 Adjustment of image quality control /
Automatic initialization of image quality control
Item to be adjusted
3.1.4 Adjustment of color registration control
3.1.5 Adjustment of the transfer belt due to environmental factors
Order
3.1.7
1
3.1.8
2
Image
3
dimensional
4
adjustment
5
at the
printing
6
section
7 3.1.9
Image
8
dimensional
9
adjustment
10
at the
11
scanning
12
section
13
14
Item to be adjusted
3.2.1 Automatic gamma adjustment ( PPC )
3.3.1 Automatic gamma adjustment ( PRT )
END
e-STUDIO2820C/2830C/3520C/3530C/4520C
ADJUSTMENT
Parts to be replaced
Photoconductive drum
1st transfer roller
Main charger grid
Item to be adjusted
3.1.6 Image dimensional adjustment
Items
Paper alignment at the registration roller .
(a) Reproduction ratio of primary scanning direction
(b) Primary scanning data laser writing start position
(c) Reproduction ratio of secondary scanning direction
(d) Secondary scanning data laser writing start position
(e) Primary scanning data laser writing start position at
duplexing
(a) Image distortion
(b) Reproduction ratio of primary scanning direction
(c) Image location of primary scanning direction
(d) Reproduction ratio of secondary scanning direction
(e) Image location of secondary scanning direction
(f) Top margin
(g) Right margin
(h) Bottom margin
1008, 1004 - 0, 1004 - 2 to 8
Adjust the image quality if necessary.
Fig. 3-1
Laser optical unit
Drum cleaning blade
Image position aligning sensor
Code in mode 05
200, 201, 202, 203, 204
Code in mode 05
396
Code in mode 05
4719
Code in mode 05
1642, ( 1644, 580 )
( Chapter 3.1, 3.2, 3.3, 3.4, 3.5 )
© 2008 TOSHIBA TEC CORPORATION All rights reserved
3 - 2
Transfer belt
Needle electrode
Image quality sensor
Code in mode 05
408
Code in mode 05
4100, 4101, 4103, 4104, 4105,
4106, 4107, 4108, 4109, 4110,
4111, 4115, 4116, 4117, 4118,
4120, 4122, 4123, 4124, 4125,
4126, 4127, 4128, 4129
401
411
487
408, 440, 441, 444, 428, 442, 445
498
–
405
306
340
305
430
432
433