Corrective Maintenance
Stepper Motor Assembly
264
14207L-001 A ZM400/ZM600 Maintenance Manual 8/9/07
Install the New Stepper Motor and Gear
1. See Figure 129 on page 263. Install the stepper motor by sliding the gear/pulley through
the drive belt. Secure in position with the pivot screw, but do not tighten at this time.
2. Reinstall the locking screw and nut, but do not tighten at this time.
3. Rotate the motor down until the drive belt is just taut. Tighten the locking screw and then
the pivot screw.
4. Route the stepper motor cable as shown and connect it to J2 on the power supply.
5. See Figure 127 and lift the power supply shield back into place.
6. Replace the mounting screw and standoff.
7. Verify all cable routing.
8. See Figure 126 on page 260 and replace the wireless board.
9. See Figure 125 on page 259 and replace the radio card.
Note • Belt should deflect under finger pressure but no more than ¼ inch (6 mm).
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