Toshiba e-studio 2555c, Service Manual

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6
© 2012-2013 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO2555C/3055C/3555C/4555C/5055C
SETTING / ADJUSTMENT
6 - 1
6. SETTING / ADJUSTMENT
6.1 Image Related Adjustment
6.1.1 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.
Fig.6-1
4402, 4058, 4059, 4060,
4061, 4062, 4560
(d) Primary scanning data writing start position at
duplexing
2
3
1
6
7
8
9
10
11
12
4
5
4006
4526
(a) Image distortion
(b) Image location of primary scanning direction
(c) Reproduction ratio of secondary scanning direction
(d) Image location of secondary scanning direction
(e) Top margin
(f ) Right margin
(g) Bottom margin
–
3030
3032
3031
4050
4052
4053
4019
(a) Primary scanning data writing start position
(b) Reproduction ratio of secondary scanning direction
4100, 4101, 4103, 4104, 4105,
4106, 4107, 4108, 4109, 4110,
4111, 4115, 4116, 4117, 4118,
4120, 4128, 4129
2742(*3)
Item to be adjusted
6.1.3 Adjustment of image quality control /
Forced performing of image quality closed-loop control
Code in mode 05
Item to be adjusted Code in mode 05
6.1.2 Adjustment of the auto-
toner sensor(*2)
Developer material
Image quality sensor(*1)
Needle electrode
Transfer belt(*1)
Image position aligning
sensor(*1)
Drum cleaning blade LED head(*1)
1st transfer roller(*1)
Main charger grid
Photoconductive drum
6.1.6 Image dimensional adjustment
Items
Code in mode 05
6.1.6 Paper alignment at the registration roller
Order
6.1.7
Image
dimensional
adjustment
at the
printing
section
6.1.8
Image
dimensional
adjustment
at the
scanning
section
Adjust the image quality if necessary. (Chapter 6.2, 6.3, 6.4, 6.5 )
END
Code in mode 05
7869 (*4), 7871-0, 2 to 10
8008 (*5), 8004-0, 2 to 10, 8009 (*6), 8005-0, 2 to 10 (*6)
Item to be adjusted
6.2.1 Automatic gamma adjustment (PPC)
6.3.1 Automatic gamma adjustment (PRT)
Parts to be replaced
Item to be adjusted Code in mode 05
6.1.4 Adjustment of color registration control
4719
*1: There is no need to perform counter clear.
*2: Adjust only the color changed.
*3: When upgrading firmware, perform the adjustment from 05-2742.
*4: Use [4] + [FAX] test pattern.
*5: For 600 dpi. Use [70] + [FAX] test pattern.
*6: For 1200 dpi. Use [230] + [FAX] test pattern.
*7: Adjustment can be done only for enlarging image.
2400 (Y,M,C,K), 2401 (Yellow)
2402 (Magenta), 2403 (Cyan)
2404 (Black), 2406 (Y,M,C)
Life counter clear
([6] + [START] :
PM support mode)
LED gap spacer
(c) Secondary scanning data writing start position
13
14
(h) Reproduction ratio adjustment of primary
scanning direction (PPC)
(i) Reproduction ratio adjustment of primary
scanning direction (PRT/FAX)
7000
7001 (*7)
6.1.9 Image
dimensional
adjustment
in the copy/
printer/fax
function