Step 3: Regicon #1 Fine Skew Adjustment - Xerox Phaser 7700 Service Manual

Step 3: RegiCon #1 Fine Skew Adjustment

This process uses sensors to examine the RegiCon image on the belt and report
what skew adjustments need to be made. A side effect of this test is that
horizontal and vertical alignments are automatically done (if the test passed).
The data output presents the skew screw adjustment values (some number of
"clicks" of the screw, either CW or CCW direction). Values less than 5 or so are
"noise" and should not need adjusted.
1.
From the Service Diagnostics menu, highlight the Adjustments/Calibration
menu and press OK.
2.
Highlight Regi Con 685 Setup Cycle and press OK.
3. At the prompt: Which DC685 procedure?, highlight #1 Fine Skew Setup and
press OK. The front panel now displays: <PostScript will do 685-1>
4. The printer now reboots and runs the test. Wait for approximately 10 seconds
after the motors turn off and the display indicates "Ready To Print", then cycle
power and enter Service Diagnostics.
5.
Enter Adjustments/Calibration --> Regi Con 685 Results and press OK.
6. Wait until the test results are displayed as follows:
DC685-1 Passed
A Out Blocks: 24
B Out Blocks: 4
<Press Ok for more Data>
Note If the block counts are not the same number as presented here, the
printer has a print-quality problem. Please refer to section
"Streaks in direction of paper travel" on page 3-104 to resolve the
print-quality problems before proceeding further with RegiCon.
7.
Press OK to see the second panel data. If an adjustment is needed, adjust by
the smounts displayed on the front panel. Be sure to tap the screw that was
adjusted with a heavy screwdriver to ensure that the adjustment remains true.
Skew Corr. Y: -7 clicks CCW
Skew Corr. M: 7 clicks CW
Skew Corr. C: -5 clicks CCW
Skew Corr. K: -12 clicks CCW
If RegiCon #1 Fine Skew test fails, see "If RegiCon Coarse Skew Fails" on
page 4-121
4-122
Phaser 7700 Color Laser Printer