Adj 11.1 Transfer Drum Nip - Xerox DocuPrint C55 Service Manual

ADJ 11.1 TRANSFER DRUM NIP

PURPOSE
The purpose of this adjustment is to ensure
that the nip between the Transfer Drum and
Print Drum is within specification. Too large a
nip may cause paper jams or registration
problems. Too small a nip may cause copy
quality problems.
CHECK
1. Run an IOT Test Pattern and panic stop
the printer with the Cyan strip on the drum.
a. Enter Normal diagnostics (Menu [3] +
Enter [7], Power On).
b. Use Menu [3] to scroll to TEST
PRINT.
c. Press Form Feed [1] and observe the
toner concentration (T=) indication on
the Message Display.
d. Wait until the paper feeds, then be
prepared to switch the printer off.
e. Observe the Message Display. When
the display indicates CT=XX, wait
approximately 2 seconds then switch
the power off.
2. Open the printer and remove the Print
Drum module.
REPAIRS/ADJUSTMENTS
ADJ 11.1
3. (Figure 1): Rotate the Print Drum up until
there is a Cyan color bar in the position
shown.
NOTE: Be sure to rotate the gear in the
direction shown. If the drum is rotated in the
reverse direction the Cleaning blade or Drum
may be damaged.
Print Drum
Cyan
Color Bar
Figure 1. Rotating the Print Drum
2/99
4-68
4. Reinstall the Print Drum Module.
5. (Figure 2): Rotate the Transfer drum until
the paper is positioned with a blank area
opposite the Print Drum as shown.
Transfer
Drum
TD02
Blank
Area
Figure 2. Positioning the Transfer Drum
DocuPrint C55/C55mp/[NC60]
Print
Drum
TD04A