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5.2.14 Rear Belt and O-Ring Removal
Figure 5-18 shows the three timing belts that extend stepper motor drive to the Platen and
two rollers that drive cards between the Card Feeder and Platen. The figure also shows the
O-ring that drives the Ribbon Take Up Spindle. Proceed as follows:
Step 1. Remove the Rear Case Member (see Section 5.2.1).
Step 2. Unplug connectors on the CPU Board and, if installed, the Encoder Board
(see Section 5.2.10).
Step 3. Remove the Rear Plate, Cam Follower, and Flywheel (see Section 5.2.11).
Step 4. Replace the belt(s) and/or O-ring. Note that because two of the rollers have
two pulleys, some replacements require removal of an overriding belt.
5-20 980264-001 Rev.B
CHAPTER 5
Figure 5-18. Rear Belts and O-Ring.