Tektronix Phaser 840, Service Manual

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110 Phaser 840 and 850 Color Printers
Transfix roller pressure spring adjustment
1. Print the service test print YMCKRGB in duplex mode. Duplex mode
can be set using the front panel menu Printer Default Settings.
2.
If any of the prints are wrinkled on both the left and right sides of the
print, the drum/transfix assembly must be replaced. No adjustment
will solve the problem.
3. If wrinkling is only present on the left or right side of any print, note
which side.
4. Remove the front cover to access the drum/transfix assembly.
5. Draw a reference mark on the both the left and right spring set screws.
6. On the side of the printer corresponding to the wrinkling, tighten the
set screw clockwise 1/8 of a revolution, using a 4 mm hex driver. On
the side that does not wrinkle, loosen its set screw 1/8 of a revolution.
Note Whatever adjustment is added to one side must be taken away
from the other side to maintain roller balance.
7.
Reassemble the printer and again print the service test print YMCKRGB
in duplex mode.
8. If wrinkling still occurs on the same side, repeat Steps 6 and 7.
Do not adjust the set screws more than 3/8 of a revolution from their
original position. Any adjustment beyond this point results in ink
adhesion problems.
9. If wrinkling continues to occur, replace the drum/transfix assembly.