Xerox Phaser 6121MFP Service Manual page 278

Adjustments and Calibrations
Scan Main Regist
6-16
Procedure
1. Print Test Pattern 1 from Tray 1 using letter or A4 media.
E
2. Place the test pattern vertically on the platen and make a copy.
3. Check that the copy meets the specification, 200 mm ± 1 mm.
4. If the width of E is out of specification, adjust the value.
Note
If the width of E in the copy of TP 1 is greater than the printed version,
decrease the setting.
5. Press the OK button.
6. Using the Up or Down Arrow buttons, adjust the setting, then press the OK
key.
7. Check zoom adjustment by repeating steps 1 through 6. Continue adjustment
until the specification is met.
To adjust for variations in the accuracy of IR parts and their mounting accuracy by
varying the scanning start position in the main scanning direction.
Note
Adjust Scan main registration after replacement of the Platen Glass, Scanner,
or Image Processor Board. Perform Scanner Main Zoom adjustment
(page 6-14) before adjusting Scan Main Regist.
Adjust the widths A and B in the copy of TP1 so that the following specification is
met: 0 mm ± 2.0 mm.
Default Setting
The default setting is 0 mm.
Adjustment Range
-5.0 mm to +5.0, in 0.5 mm increments.
s6121mfp-320
Phaser 6121MFP Service Manual