4-140
Phaser 7700 Color Laser Printer Service Manual
Coarse RegiCon Initialization
The Coarse RegiCon Initialization procedure is needed when either RegiCon
1 or 4 fail.
If any one of the above conditions exist, perform a manual adjustment of the
horizontal alignment.
1.
Run the Belt Edge Learn test (page 4-134).
2.
From the Adjustments/Calibrations menu, select Coarse RegiCon Init
test. After some NVRAM values are read, the test asks Set Factory
Defaults? Yes/No, then select Yes. This sets the horizontal and vertical
alignment to centered values. At this time, it should not be necessary to
reset the magnification or magnification balance values, so select No to
Reset Mag/Bal Values? Yes/No.
Note
In all the following steps, Cyan is the reference line and
cannot be adjusted, so you need to adjust all the other
lines towards the Cyan line.
3.
From the Built-in Test Prints menu, select Print Grid 1-Dot. This print
shows the relative error between the CMYK scan lines. Always indicate
which edge of the print comes out of the printer first to be certain which
way is Left/Right or Up/Down (see Figure 4-6 “Grid 1-Dot Pattern
Orientation for A-size Paper”). Measure the distance (in millimeters)
between the vertical lines, with the Cyan line being the reference line.
■
It is best if the default paper tray contains A-size paper.
Figure 4-6 Grid 1-Dot Pattern Orientation for A-size Paper
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S7700-464-b
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