Xerox Phaser 790 User Manual

10/00
4-161
Phaser 790/DocuColor 2006
ADJ 8.1
Repairs and Adjustments
Initial Issue
ADJ 8.1 Printer Registration
Purpose
The purpose is to adjust the side-to-side and top-to-bottom registration of the printer to a nom-
inal value. This procedure should be performed before adjustment of the IIT Scanner Registra-
tion.
Check
1. Load fresh, 11 inch (A4) paper, long edge feed, into paper Tray 1.
2. Using the Menu button, scroll to PRINT PAGES FROM LIST, and press the Enter button.
3. Using the Arrow Up and Arrow Down buttons, select PRINT MENU HELP, and then press
the Item Enter button. A series of pages will be printed. For this adjustment, you will only
use the first page.
4. Repeat to create three prints of the first page.
5. Check the side-to-side and top-to-bottom registration (Figure 1).
6. Repeat steps 1-5 for each tray and option tray.
7. Compare the average value calculated to the value displayed in Table 1. If the average
calculated value is 2.5 mm greater than or less than the nominal value in the table, per-
form the adjustment.
Figure 1 Measuring the Side-to-Side and Top-to-Bottom Registration
Table 1 Nominal Registration Values for Comparison of Measurements
Media Size Side-to-Side Top-to-Bottom
8.5 x 11 inch 133 mm 41 mm
A4 132 mm 46.5 mm
1
Using a 150 mm scale,
measure and record
the side-to-side regis-
tration on each of the
three prints
2
Calculate the average
side-to-side registration
value of the three mea-
surements
3
Measure and record
the top-to-bottom
registration on each
of the three prints
4
Calculate the
average top-to-
bottom registra-
tion value of the
three measure-
ments

Xerox Phaser 790 Specifications

General

Brand	Xerox
Model	Phaser 790
Category	Copier
Language	English