Adjustment - Toshiba e-STUDIO2330C Service Handbook

3.

ADJUSTMENT

3.1 Image Related Adjustment
3.1.1 Adjustment Order
This chapter mainly explains the procedures for image related adjustment. When replacing
components which have other specified instructions for adjustment, those specified instructions are to
be obeyed in priority.
In the following diagram, the solid lines with arrow lead to essential adjustments, while the dotted lines
lead to adjustments to be performed if necessary.
Developer material Photoconductive drum
Item to be adjusted
3.1.2 Adjustment of the auto-toner
sensor(*2)
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 )
*1: There is no need to perform counter clear.
*2: Adjust only the color changed.
END
*3: When the SRAM board <LGC board> has been replaced, perform the adjustment from 05-4721.
*4: When upgrading firmware, perform the adjustment from 05-396.
*5: Use [4] + [FAX] test pattern.
*6: Use [70] + [FAX] test pattern.
© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
Parts to be replaced
Drum cleaning blade
Image position aligning
1st transfer roller(*1)
sensor(*1)
Main charger grid
Code in mode 05
200(Y,M,C,K), 201(Yellow)
202(Magenta), 203(Cyan)
204(Black), 205(Y,M,C)
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
Code in mode 05
1642(*5), (1644, 580)
1008(*6), 1004 - 0, 1004 - 2 to 8
Adjust the image quality if necessary.
Fig. 3-1
3 - 1
Transfer belt(*1)
Needle electrode
Image quality sensor(*1)
Life counter clear
([6]+[START]: PM support mode)
Code in mode 05
396(*4)
Code in mode 05
4719
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
( Chapter 3.1, 3.2, 3.3, 3.4, 3.5 )
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
Laser optical unit
Tilt motor initial
excitation setting
(05-4721) (*3)
ADJUSTMENT
3