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June 2005 © TOSHIBA TEC e-STUDIO281c/351c/451c ADJUSTMENT
3 - 1
3
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.
Fig.3-1
396
Item to be adjusted
3.3 Adjustment of image quality control /
Automatic initialization of image quality control
Code in mode 05
Item to be adjusted Code in mode 05
3.2 Adjustment of the auto-toner sensor 200, 201, 202, 203, 204, 206
Developer material
Image quality sensor
2nd transfer roller
1st transfer roller
Transfer belt
Main charger grid
Main charger wire
Drum
Drum cleaner brush
Drum cleaning blade
Laser optical unit
3.4 Image dimensional adjustment
Items Code in mode 05
448, 449, 450, 452,
455, 457, 458, 459,
460, 461, 462, 463
3.4.2 Paper alignment at the registration roller
Order
2
3
4
5
1
6
9
10
11
12
3.4.4
Scanner
related
adjustment
13
14
15
16
7
8
(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
(b) Primary scanning data laser writing start position
(c) Reproduction ratio of secondary scanning direction
(a) Reproduction ratio of primary 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
3.4.3
Printer
related
adjustment
–
405
306
340
305
430
432
433
498
441, 440, 444
443, 442, 445
401
411
421
284
285
Adjust the image quality if necessary.
(
Chapter 3.5, 3.6, 3.7
)
END
Code in mode 05
1642,
(
1643, 580
)
1000, 1001, 1002, 1003
Item to be adjusted
3.5.1 Automatic gamma adjustment
(
PPC
)
3.6.1 Automatic gamma adjustment
(
PRT
)
Parts to be replaced
Code in mode 05
Item to be adjusted
3.5.2 Color deviation adjustment
(
PPC
)
3.6.1 Color deviation adjustment
(
PRT
)
417, 418
(A3/LD)
953, 954, 955, 956 (A4/LT)