Scanner's Sub-Scanning Zoom Ratio Adjustment - Konica Minolta Di1610 Service Manual

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Scanner's Sub-Scanning Zoom Ratio Adjustment

<Requirement>
Zoom
Specification
Ratio
Full Size
200±0.5 mm
(100%)
Perform this adjustment in the following cases.
• After the Scanner Assy. has been replaced
• After the printer's main scanning & sub-scanning registration adjustments have been per-
formed
<Adjustment Procedure>
1. Print the test pattern.
2. Enter the "ADJUST" menu in the Service mode.
3. Place the test pattern on the Original Glass and make a test copy.
NOTES
• The test pattern should be positioned vertically.
• Use A4 L or Letter L paper loaded into Tray1 to make the test copy.
4. Check that the width of E in the copy of the test pattern 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.
5. Change the setting.
If the width of E in the test pattern is longer than the specified width . . . . . Decrease the set-
ting.
If the width of C in the test pattern is shorter than the specified width . . . . . Increase the set-
ting.
✽ If the shift cannot be adjusted to within the specification with a single adjustment, perform
the adjustment again to change the setting.
6. Press the Yes key to apply the setting.
• After finishing the printer's main scanning & sub-
scanning registration adjustments, place the
printed test pattern on the Original Glass, and
make a copy of it.
• Adjust the width of E in the copy of the test pattern
so that the following specification is met.
4007D053AA
Mode
"ADJUST" menu
D-35
Function Item Setting Range
CCD SUB 95 to 105
ZOOM 1 increment = 0.4%