Konica Minolta bizhub C450 Service Manual page 215

8. Utility Mode
(9) Scanner Adjustment
• Use the following Color Chart for the adjustment of the Scanner Section.
• If the Color Chart is not available, a scale may be used instead.
C
B
A
Original Reference
<Leading Edge Adjustment>
Functions • To adjust variations in mounting accuracy and sensitivity of the Scanner Home Sen-
sor and in mounting accuracy of the Original Width Scale by varying the scan start
position in the main scan direction.
Use When the Original Glass is replaced.
When the Original Width Scale is replaced.
Adjustment
Specification
B
Adjustment If width B on the copy is less than 6.5 mm, increase the setting value.
Instructions If width B on the copy is more than 7.5 mm, decrease the setting value.
Adjustment 1. Call the Administrator Setting to the screen.
2. Touch "System Setting" → "Expert Adjustment" → "Scanner Adjustment" → "Leading
Procedure
Edge Adjustment."
3. Position the Color Chart correctly so that the original reference point is aligned with
the scale.
4. Press the Start key to make a copy.
5. Check point B on the image of the copy.
6. If the image falls outside the specified range, change the setting using the +/- key.
7. Press the Start key to make another copy.
8. Check the image on the copy to see if the specifications are met.
9. Make adjustments until the specifications are met.
178
• A: Centering
• B: Leading Edge Adjustment
• C: Horizontal Adjustment
• D: Vertical Adjustment
D
4036fs3018c0
•Adjust so that width B on the sample copy
made falls within the specified range.
•An adjustment must have been completed
correctly of "Leading Edge Adjustment" of the
Printer Adjustment.
Specifications
B: 7 ± 0.5 mm
4036fs3020c0
Setting Range
-5.0 to +5.0 (in 0.1 mm increments)
Field Service Ver. 1.0 Mar. 2005
(10 ± 0.5 mm if a scale is used)