Xerox WorkCentre 5790 Series, Service Manual

Page: 1157 / 1610

May 2013
4-419 Xerox® WorkCentre® 5790 Family
REP 14.12
Repairs/Adjustments
4. Move the scan carriage to the position shown in Figure 2 , with the exposure lamp at the
left end of the frame cut-outs, then mark the position of the half rate scan carriage. The
anchor balls should be in the position shown in
Figure 1 .
Figure 2 Carriage start position
5. (W/ TAG 150 ) remove the document size sensor cover, refer to REP 14.20 .
6. Remove the cable clamps, with captive screws, from the scan carriage. Move the cables
clear of the scan carriage, then lift the scan carriage out through the cut-outs in the frame.
Rest the scan carriage out of the way of the cables. It is not necessary to disconnect the
ribbon cable. Store the cable clamps for later use.
7. Unhook the tension spring from the rear cable. Remove the spring from the cable and
store the spring for later use.
8. Remove the rear cable completely by unhooking the end ball from its retaining bracket
and unwind the cable from the capstan.
9. Repeat steps 7 and 8 for the front cable.
Replacement
NOTE: The replacement procedure is made easy by holding the windings on the capstan in
place with tape at all times, until each cable is fully installed. Keep the cable tight to prevent it
unwinding.
1. Prepare several short lengths of adhesive tape.
2. If necessary, rotate the capstan to bring the anchor ball recess to the top and slightly to
the right. Check that the half rate scan carriage is in the start position, as in
Figure 2 .
3. Place the rear cable in the position shown in Figure 3 . Hold in place on the capstan with
adhesive tape.
Figure 3 Winding start position
4. Starting with the end-ball end of the cable, wind on three turns, stopping at each turn to
hold the cable to the capstan with adhesive tape. If necessary, use a fresh length of adhe-
sive each time to ensure the cable is held tightly.
5. Hold the capstans in position, then tape the top of the fly-wheel weight (W/O TAG 150 ) or
the drive shaft (W/ TAG 150 ) onto the top left of the scanner frame. This is to prevent the
capstan turning while the cable end is placed in position.
Exposure lamp
Frame cut-out
Scan carriage
Half rate scan
carriage
End ball
rear
Front
Silver cable
Dark cable