Scan Area - Konica Minolta bizhub C200 Service Manual

10. Service Mode
10.3.4

Scan Area

A. ADF Adjustment
See P.34 of the DF-612/SP-503/MS-501 service manual.
B. BK-S 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.
COLOR CHART
1.0 4.0 2.5 2.2
4.5 2.8
2.0
1.1 3.2
C
1.8
3.6
1.25 1.4
1.6
Color is "hue",
lightness is "value",
saturation is "chroma":
this is the world of color.
Hue The quality of color which can be
described by words such as red,
yellow, blue etc.
A
The quality of color which can be
Value
described by words such as light,
dark etc., relating the color to a gray
of a similar lightness.
The quality of color which can be
Chroma
described by words such as vivid,
dull etc., describing the extent to
which a color differs from a gray
having the same value.
Y M C
C M C Y Y M
P1
B
Original Reference
(1) Zoom
• Cross Direction Adjustment
Functions • To adjust the zoom ratio in the main scan direction for the scanner section.
Use • The exposure unit is replaced.
Adjustment
Specification
Adjustment If the C width on the copy sample is less than one on color chart, increase the setting.
Instructions If the C width on the copy sample exceeds one on color chart, decrease the setting.
Setting/ 1. Call the Service Mode to the screen.
2. Touch these keys in this order: [Machine] → [Scan Area] → [BK-S Adjustment] →
Procedure
[Zoom] → [Cross Direction 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 the C width on the image of the copy.
6. If the image falls outside the specified range, change the setting value.
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.
156
COLOR CHART
Y M C
C M C Y Y M
10 9 8 7 6 5 4 3 2 1
MODEL :
MACHINE S/N :
DATE : / / °C %RH
COUNTER :
COPY DENSITY :
1.0 4.0 2.5 2.2
COLOR BALANCE Y :
4.5 M :
2.8
2.0
C :
1.1 3.2 BK :
OTHERS :
1.8
3.6
1.25
1.4 1.6
CHART NO. : CTC-008-01
PART NO. : 4036-7940-01
P1 Printed In Japan
D
4038F3C517DA
C
4038F3C516DA
Field Service Ver. 1.0 Jun. 2008
• A: Feed: Leading Edge
• B: Feed: Centering
• C: Zoom: Cross Direction Adjustment
• D: Zoom: Feed Direction Adjustment
•Measure C width on the color chart and on
the sample copy, and adjust the gap to be
within the following specification.
•An adjustment must have been completed
correctly of "Paper Feed Direction Adj." of
[Printer Area].
Specifications
C: ± 1.0 mm
Setting range
0.990 to 1.010 (in 0.001 increments)
* When using a scale:
Standard dimension: 200.0 mm