Adjustment Order (Image Related Adjustment) - Toshiba e-STUDIO281c Service Handbook

3. ADJUSTMENT
3.1

Adjustment Order (Image Related Adjustment)

This chapter mainly explains the procedures for image related adjustment. When replacing compo-
nents 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
Item to be adjusted
3.2 Adjustment of the auto-toner sensor
Item to be adjusted
3.3 Adjustment of image quality control /
Automatic initialization of image quality control
Order
1
3.4.2 Paper alignment at the registration roller
2 3.4.3
Printer
3
related
4
adjustment
5
6
7
8
9 3.4.4
Scanner
10
related
11
adjustment
12
13
14
15
16
Item to be adjusted
3.5.1 Automatic gamma adjustment ( PPC )
3.6.1 Automatic gamma adjustment ( PRT )
END
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Parts to be replaced
Laser optical unit
Drum cleaning blade
Drum cleaner brush
Code in mode 05
200, 201, 202, 203, 204, 206
3.4 Image dimensional adjustment
Items
(a) Reproduction ratio of primary scanning direction
(b) Primary scanning data laser writing start position
(c) Reproduction ratio of secondary scanning direction
(d) Transfer belt cleaning unit contact timing adjustment
(e) Transfer belt cleaning unit release timing adjustment
(f) Secondary scanning data laser writing start position
(g) 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, ( 1643, 580 )
1000, 1001, 1002, 1003
Item to be adjusted
3.5.2 Color deviation adjustment ( PPC )
3.6.1 Color deviation adjustment ( PRT )
Adjust the image quality if necessary. (
Fig. 3-1
3 - 1
Drum
Main charger wire 1st transfer roller
Main charger grid 2nd transfer roller
Image quality sensor
Code in mode 05
396
Code in mode 05
417, 418 (A3/LD)
953, 954, 955, 956 (A4/LT)
Chapter 3.5, 3.6, 3.7 )
Transfer belt
Code in mode 05
448, 449, 450, 452,
455, 457, 458, 459,
460, 461, 462, 463
401
411
421
284
285
441, 440, 444
443, 442, 445
498
–
405
306
340
305
430
432
433
e-STUDIO281c/351c/451c
ADJUSTMENT
3