Function
The testing of focus sharpness checks that maximum sharpness is ob-
tained to ensure the best possible focus.
Technical data
Focus:
< 6 micron
Tools and equipment required
Photoshop plug-in 2.1.7 or latest version
UGRA test target to measure the focus value.
5 • ADJUSTMENTS AND TESTING
Focus Sharpness
Edition 1
•
January 1996 Service Manual • ScanMate 4000/5000
5•11a
Caution!
☛
Turn off power
• Before
connecting or disconnecting cables.
• Before
carrying out service operations.
☛
Ensure the UGRA test target is free of dust otherwise false indica-
tions are likely.
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