Xerox Phaser 790, Service Manual

Page: 403 / 653

10/00
4-149
Phaser 790/DocuColor 2006
ADJ 5.2
Repairs and Adjustments Initial Issue
ADJ 5.2 ADF Lead Edge Registration
Purpose
The purpose is to set the Lead Edge of the document so it stops correctly in relation to the
Registration Guide.
NOTE: Verify that the Printer Registration Adjustment (ADJ 8.1) on the IOT is within specifica-
tion before performing this adjustment.
Check
1. Using the Copier Setup Test Pattern 82E8220, make two 11x17 (A3) copies with the
machine Color Mode set to Black, 100% magnification, and Platen Mode.
2. Using the second sample copy from step 1 as the document, make a copy from the ADF.
3. Check the copy. Verify that the distance from the lead edge to the top of Step 3 on the
LE2 scale is 10.0mm
±
2.5 (Figure 1)
Figure 1 Test Pattern Orientation
Adjustment
1. Enter Diagnostic Mode (IIT) (GP 19).
2. Enter Systemdata R/W and press the Select button.
3. Enter Chain 715 and Link 6 and confirm the present values.
4. Change the values as required, based on the measurement results. If Under Registration
occurs, decrease the value. If Over Registration occurs, increase the value. Change the
values as follows:
NOTE: To enter a letter Hexadecimal value, press the asterisk key prior to entering each letter
value, then press the appropriate numerical key as follows: A=1, B=2, C=3, D=4, E=5,
F=6
a. Enter the new value and press Start.
b. Press the Select button to verify the value has changed.
5. Perform the check again.
10.0mm
±
2.5
Lead Edge
Paper
Feed
Direction
Table 1
Minimum Initial Maximum Remarks
Settings Value 0 6Eh C2h 0.16mm/Step