Konica Minolta bizhub 160 Service Manual page 171

13. Service Mode (bizhub 160f/bizhub 161f)
E. CCD SUB ZOOM
Functions • To adjust for variations in the accuracy of IR parts and their mounting accuracy by
varying the scanning zoom ratio in the sub-scanning direction.
Use • After the PRN MAIN REGIST and PRN SUB REGIST adjustments have been per-
formed
• When the Scanner Assy. has been replaced
Adjustment
Specification
Adjustment If the width of E in the test pattern is longer than the specified width.
Instruction
If the width of E in the test pattern is shorter than the specified width.
Adjustment 1. Print the test pattern.
Procedure 2. Enter the "ADJUST" menu in the Service mode.
3. Place the test pattern on the Original Glass and make a test copy.
NOTE
• The test pattern should be positioned vertically.
• Use A4 or Letter 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 shift cannot be adjusted to within the specification with a single adjustment, per-
form the adjustment again to change the setting.
6. Press the Yes key to apply the setting.
NOTE
• If the Stop key is pressed, instead of the Yes key, the main screen is displayed
and the setting returns to that before it was changed.
• Place the test pattern on the Original Glass again, make another test copy, and
check it.
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•After finishing the PRN MAIN REGIST and
PRN SUB REGIST 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
Specifications
200 ± 0.5 % (Zoom Ratio = Full Size :100%)
Setting Range
95 to 105 (1 increment = 0.4 %)
The default setting is "100"
Field Service Ver. 1.0 Apr. 2005
..... Decrease the setting.
..... Increase the setting.