Xerox WC5545F, Service Manual

Page: 1596 / 2320

August 2007
4-576
WorkCentre 5687 Family
REP 14.12A
Repairs/Adjustments
4. Move the full rate carriage to the position shown in Figure 2, with the exposure lamp at the
left end of the frame cut-outs. Mark the position of the half rate carriage. The anchor balls
should be in the position shown in Figure 1.
Figure 2 Carriage start position
5. Remove the cable clamps, with captive screws, from the full rate carriage. Move the
cables clear of the carriage and lift the carriage out through the cut-outs in the frame. Rest
the carriage out of the way of the cables. It is not necessary to disconnect the ribbon
cable. Store the cable clamps for later use.
6. Unhook the tension spring from the outboard cable. Remove the spring from the cable
and store the spring for later use.
7. Remove the outboard cable completely by unhooking the end ball from its retaining
bracket and unwind the cable from the capstan.
8. Repeat steps 6 and 7 for the inboard 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 carriage is in the start position, as in Figure 2.
3. Place the outboard, silver 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 capstan in position and tape the top of the fly-wheel weight on the drive shaft to
the top of the scanner frame on the left. This is to prevent the capstan turning while the
cable end is placed in position.
6. Wrap the cable over the half rate scan carriage pulley, as shown in Figure 1, and back to
the end ball holding bracket. If the winding is correct, the end ball will fit tightly onto the
bracket.
7. Wind the loop end of the cable round the capstan three times, as shown in Figure 1, stop-
ping at each turn to hold the cable to the capstan with adhesive tape. If necessary, use a
fresh length of adhesive each time to ensure the cable is held tightly.
8. Wrap the cable round the fixed pulley as shown in Figure 1, and back round the half rate
scan pulley.
9. Attach the spring to the cable loop and hook the spring to its tab on the frame.
Exposure lamp
Frame cut-out
End ball
Inboard
Outboard
Dark cable
Silver cable