Adj 9.9 Registration Control (Regicon) Adjustment Overview - Xerox Phaser 7760 Service Manual

c. Note the leading edge of the paper when removing the test print from the tray. Use a
pen or pencil to note the leading edge as the TOP of the print Grid 1-Dot pattern
annotations in Figure 2. With TOP up, note the direction of scan from left to right as
the FAST direction. The direction from the bottom of the print to the top is referred as
the SLOW direction.
Figure 2 Grid 1-Dot Pattern Annotations
d. Notice which vertical line color(s) on the print needs to be moved right or left to line
up as closely as possible with the cyan color line.
e. Measure how much each line needs to move (in millimeters) and whether it must be
moved left or right.
NOTE: Cyan is the reference color and does not move. Make the adjustments of M,
Y, and K toward Cyan.
5. From the Adjustments/Calibrations menu, select Coarse RegiCon Init.
a. Select No to the Set Factory Defaults? Yes/No.
b. Select Yes to Do you want to adjust NVRAM Yes/No.
c. Select No to Set Skew Error Threshold? Yes/No.
d. Select Fast to Which scan direction? Fast/Slow.
6. Select the color {Y | M | C | K} to adjust. Select how may millimeters {1-5} to adjust. Select
the direction {Left | Right}. The confirmation screen appears (Adjust <color> by <n>
mm? Yes/No). Select Yes.
7. Reprint the Grid 1-Dot pattern to verify changes.
8. Print the Grid 1-Dot page to see if the vertical lines are all clustered within 1 mm of the
Cyan line. If not, repeat the process.
9. If the adjustments are no longer having an effect or the lines move in the opposite direc-
tion selected, go back to 5 and select Yes to Set Factory Defaults.
Repeat steps 5 through 8. If the results are still not satisfactory, examine the Chevron pat-
tern on the belt during RegiCon.
Revised
Phaser 7760 Color Laser Printer
ADJ 9.9 Registration Control (RegiCon) Adjustment
Overview
Purpose
The RegiCon tests are the means by which registration is accomplished. Registration estab-
lishes the alignment of the four primary colors in the process and scan directions, tilt or skew,
length of lines and linearity. When the registration process is completed, all color planes are
positioned properly.
The RegiCon Adjustment procedures should be used whenever the technician replaces the
Laser Unit or where color registration is bad.
The printer registration process consists of the following adjustments and is briefly summarized
in this overview:
• Fine Skew Adjustment
• In/Out Skew Adjustment
• Center Skew Adjustment
• Coarse Skew Adjustment
RegiCon is the procedure by which the printer aligns the magenta, yellow, and black vertical
and horizontal scan lines to the cyan reference scan line. Horizontal and vertical alignment
ensures that the magenta, yellow and black lines are superimposed on Cyan.
NOTE: Cyan is the reference color to which all other colors are aligned.
Figure 1 Horizontal and Vertical Margins
January 2010
4-101
Repairs and Adjustments
ADJ 9.8, ADJ 9.9