Adj 6.4 Iit Side Registration - Xerox Phaser 790 Service Manual

ADJ 6.4 IIT Side Registration

Purpose
The purpose is to achieve the proper home positioning for the IIT side direction (Primary Scan-
ner).
IIT Side Registration enhances the overall precision of document-related size detection accu-
racy. as well as document positioning
Check
1. Using the Copier Setup Test Pattern 82E8220, make two copies with the machine set to
Tray 1, A3, and 100% magnification.
2. Check the second copy. Verify that the distance from the side edge to the top of Step 3 on
the SE2 and SE3 scales is 10.0mm ± 2.5. (Figure 1)
10.0mm
± 2.5
Edge of copy
Figure 1 ADF Side Registration Check
Adjustment
1. Enter Diagnostic Mode (IIT) (GP 19).
2. Enter Systemdata R/W and press the Select button.
3. Enter Chain 715 and Link 3 and confirm the present values.
Repairs and Adjustments
ADJ 6.4
Paper Feed
Direction
4. Change the values as required, based on the measurement results (Figure 1). When the
measurement is short, reduce the value; when the measurement is long, 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.
Minimum
Settings Range 0
5. Perform the checks again.
10/00
4-158
Table 1
Initial Maximum Remarks
47h FFh 0.04mm/Step
Phaser 790/DocuColor 2006
Initial Issue