12.4 Machine; Color Alignment Adjustment - Olivetti d-Color MF651 Service Manual

Field Service Ver. 2.0 Jul. 2009

12.4 Machine

12.4.1

Color Alignment Adjustment

A. Use
• To adjust color shift if color shift is found at the trailing edge of either plain paper or thick
paper by the comparison of originals and their output.
• Uses this function when color shift occurs at the trailing edge of images.
• Able to make a setting on a process speed basis independently for each paper type of
plain paper (color), thick 1/1+, and thick 2/3/4.
B. Procedure
• The default setting is 0.
1. Call the Service Mode to the screen.
2. Touch these keys in this order: [Machine]
3. Load manual bypass tray with A3/11 x 17 or A4/8
4. Select the paper type to be adjusted.
5. Press the Start key.
6. Using the printed test pattern, check color shift in the sub scan direction on both lead-
ing and trailing edge areas. If color shift is found only around the trailing edge, perform
the following adjustment.
(If color shift is found on both areas, perform [Color Registration Adjustment].
7. Using the [+] / [-] key, change the setting value as necessary.
If the cross deviates in the direction of A, increase the setting. (Decrease paper trans-
port speed.)
If the cross deviates in the direction of B, decrease the setting. (Increase paper trans-
port speed.)
8. Produce another test pattern and make sure that there is no deviation.
Check Procedure
Direction of A
Y110571-1
<compare two places>
If the cross deviates in the direction of A,
decrease the setting.
If the cross deviates in the direction of B,
increase the setting.
Service Manual
12. SERVICE MODE
[Color Registration Adjustment].
/ x 11 plain paper.
1
2
Direction of B
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