Cis Sub Zoom - Konica Minolta magicolor 1680MF Service Manual

14. SERVICE MODE
14.4.2

CIS SUB ZOOM

• To adjust for variations in the accuracy of IR parts and their mounting accuracy by
Function
varying the scanning zoom ratio in the sub-scanning direction.
• When the MFP board has been replaced.
• When the Scanner unit has been replaced
Use NOTE
• When the MFP board is replaced, the setting value is cleared. Re-entering a new
setting value is necessary.
• Adjust the width of E in the copy of the test pattern1 so that the following specification
is met.
• 200 ± 0.5% (Zoom Ratio = Full Size:100%)
Adjustment
Specification
• The default setting is 0%.
Adjustment
• -2.0% ~ "0%" ~ +2.0%
Range
• Step: 0.2%
1. Print the test pattern1.
See P.143
2. Enter the [ADJUST] menu in the service mode.
3. Select [CIS SUB ZOOM] of [ADJUST] and press the Select key.
4. Place the test pattern1 on the Original Glass and make a test copy.
NOTE
• The test pattern1 should be positioned vertically.
Setting/
• Use A4 or Letter paper loaded into tray1 to make the test copy.
Procedure
5. Check that the width of E in the copy of the test pattern1 meets the specification.
Calculation: (1 - Width of E in the document ÷ Width of E in the copy) × 100
If the width of E is out of specification, adjust it according to the following procedure.
6. Press the Select key.
7. Using the
8. Place the test pattern1 on the Original Glass. Then, make a test copy again and check
it.
• If the width of E in the test pattern is longer than the specified width
Adjustment ..... Decrease the setting.
Instructions • If the width of E in the test pattern is shorter than the specified width
..... Increase the setting.
130
/ key, change the setting value and then press the Select key.
Field Service Ver. 1.0 Nov. 2008
E
4139F3C549DA