Konica Minolta bizhub C450 Service Manual page 209

8. Utility Mode
<Vertical Adjustment>
Functions • To synchronize the paper transport speed with the image writing speed.
Use • The l adjustment becomes necessary.
• The image on the copy distorts (stretched, shrunk).
• When the image on the copy is stretched in the sub scan direction.
Adjustment
Specification
A
Adjustment If width A or B is longer than the specifications, make the setting value smaller than the
Instructions current one.
If width A or B is shorter than the specifications, make the setting value greater than the
current one.
Adjustment 1. Load Tray 1 with A3 or 11 × 17 plain paper.
Procedure 2. Call the Service Mode to the screen.
3. Touch these keys in this order: "Test Mode" → "Lattice Pattern."
4. Select "Black," "SINGLE," "FEET," "CD Width:6," "FD Width:6," "Density:255," and
"Normal."
5. Press the Start key to let the machine produce a test pattern.
6. Check width A (equivalent to one grid) and width B (equivalent to 48 grids) on the
test pattern.
7. Call the Administrator Setting to the screen.
8. Touch "System Setting" → "Expert Adjustment" → "Printer Adjustment" → "Vertical
Adjustment."
9. If width of A or B falls outside the specified range, change the setting using the Up/
Down keys.
10.Press the Start key to let the machine produce a test pattern.
11.Check width A and width B on the test pattern.
12.If width A or B falls outside the specified range, change the setting value and make a
check again.
13.If width A or B falls within the specified range, touch "OK."
14.Following the same procedure, adjust for "Thick 1 to 3," "OHP," and "Envelope."
(Check width A only for "OHP" and "Envelope.")
<Erase Leading Edge>
Functions • To set the leading edge erase amount of the paper.
Use • To change the width of the area not printed along the leading edge of the paper.
Setting/ • The default setting is "4 mm".
Procedure
172
B
4036fs3017c0
"4 mm" 5 mm
Field Service Ver. 1.0 Mar. 2005
Width A and width B on the test pattern pro-
duced should fall within the following ranges.
Width A: equivalent to one grid
Width B: equivalent to 48 grids
Specifications
A: 7.9 to 8.3
B: 389.1 to 392.1
Setting Range
A, B: -10 to +10
7 mm