Develop D 16G, Service Manual

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D-37
(9) Scanner’s Main Scanning Registration Adjustment
<Requirement>
Perform this adjustment in the following cases.
•
After the Scanner Assy. has been replaced
•
After the printer’s main scanning & sub-scanning registration adjustments and the scan-
ner’s main scanning zoom ratio adjustment have been performed
<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 the amount that widths A and B in the copy of the test pattern are shifted.
If the shift is out of specification, adjust it according to the following procedure.
5. Change the setting.
If the width of A is less than the width of B . . . . . Increase the setting.
If the width of B is less than the width of A . . . . . Decrease the setting.
✽
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.
Specification Mode Function Item Setting Range
0±2.0 mm “ADJUST” menu CCD MAIN REGIST
90 to 110
1 increment = 0.5 mm
• 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.
1382D011AA
A
B