How to replace
Removal
1 • Remove the following covers:
Left hand end plate E and left hand drum cover F, (section 4•2 steps
5 and 6).
2 • In order to give access to the spindle step motor, move the drum to
the zero position, turn on power and access the service program,
(section 3•5).
3 • Select 1, (Move spindle) and Z, (Set drum in zero position). Turn off
power.
4 • Disconnect the connector to the step motor.
5 • Manually rotate the spindle until the head of the 4 mm dome head
allen screw A securing the step motor to the spindle is accessible
and remove the screw and lock washer.
6 • Remove the four 4 mm allen screws B retaining the step motor to
its mounting bracket and lift the motor away.
Assembly
7 • Mount a new step motor and refit the four 4 mm allen screws.
8 • Align the holes in the step motor shaft and spindle and refit the 4
mm dome head allen screw and new lock washer.
9 • Reconnect the connector to the step motor.
10 • Carry out the adjustment and test operations specified below.
11 • If no further replacement operations are required, refit the covers
removed in step 1 in accordance with section 4•2.
Adjustments required
White calibration in transmission and reflection (section 5•5)
Register error (section 5•12).
Service Manual • ScanMate 4000/5000 Edition 1 • January 1996
Spindle Step Motor
4•14b
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