Xerox Phaser 4500, Service Manual

Page: 281 / 537

6-8 Phaser 4500 Service Manual
Adjusting Duplex Registration
1. Enter Service Diagnostics.
2. Select Engine NVRAM Adjustments , then press the OK button.
3. Select either the duplex process adjustment ( Duplex Proc Dir ) or scan
adjustment (
Duplex Scan Dir
), then press the OK button.
4.
Use the Up Arrow and Down Arrow buttons to set the new value. Each
increment of change equals 0.5 mm. (The default value is 8.)
5. Press the OK button to save the setting.
6. Press the Back button.
7.
Select
Engine Test Print
, then press the OK button.
8.
Select
Print Test Pattern
, then press the OK button to print the Engine Test
Pattern.
9. Check the following measurements on two consecutive test patterns.
10.
Repeat steps 1 through 9 until correct measurements are achieved.
11.
Perform the Registration (Side-To-Side) test on page 5-10 and the Registration
(Lead Edge-to-Trail Edge) test on page 5-11. Repeat this adjustment procedure if
the results are incorrect.
Distance Measurement
From the lead edge of the paper to the first horizontal line
(measurement A in the figure on page 6-4) 4 mm ± 2 mm
From the left edge of the paper to the edge of the thick
vertical line (measurement B in the figure on page 6-4) 4 mm ± 2.5 mm