Contex CHAMELEON 25, Technical & Service Manual

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FSG/MTM/002 060511
34
4.3.3 Check and Adjustment of Scan-Width
Refer to FSG/TSM/001 for adjustment procedure
Images of the Scan-Width adjustments and the Optical Adjustments Patterns are shown in:
Fig. 4-9 Sx 25, Scan-Width, CCD-Centering and Vertical Positioning
Fig. 4-10 XL 42 Camera A: Scan-Width, CCD-Centering and Vertical Positioning
Fig. 4-11 XL 42 Camera B: Scan-Width, CCD-Centering and Vertical Positioning
Fig. 4-12 XL 42 Camera B: Scan-Width, CCD-Centering and Vertical Positioning
Fig. 4-13 Optical Adjustment Pattern, 1 Camera, 25”
Fig. 4-14 Optical Adjustment Pattern, 3 Camera, 42”
The aim of this adjustment is to obtain a
camera Scan-Width of:
COUGAR Sx 25, CHAMELEON 25: 635 mm
CHROMA XL 42, CRYSTAL XL 42: 365.3/375.0/365.3 mm
The Scan-Width is correct if the total sum of Scan-Width Units (SWU) at the start and at the
end of the scanline is as shown in the table below (
1 SWU is either 1 Black Line or 1 White
Space of the Scan-Width Pattern (A )).
Model Optical Adjustment Pattern Total sum of
Scan-Width
Units Tolerance
COUGAR Sx 25
CHAMELEON Sx 25
6779D105, sub-pattern A 6 ±0.5 SWU
CHROMA XL 42
CRYSTAL XL 42
6779D134, sub-pattern A 6 ±0.5 SWU
The tolerance corresponds to approximately 0.10% on the Scan-Width (scaling error).
When all camera adjustments have been completed, run Scanner Maintenance.