Stepper Assembly - Y-E Data YD-380 Maintenance Manual

4.13 Stepper Assembly (Refer to Chapter 5, Figure 3)
4.13.1 Service Check
1. Power up the drive.
2. Check the head/carriage Seek operation by applying the
Direction and Step signals t~,the interface~
4.13.2 Removal and Replacement
1. Remove the PWB. (See 4.1)
2. Remove J3 connector housing 1. (See page 9, figure 4.2.2)
3. Remove the belt clamp C securing screw' (M2.6) from top
of the frame.
4. Remove the steel belt assembly screw (M2.6) the top of
the frame.
5. Remove the stepper screw from the frame.
6. Gently unloop the steel belt from the stepper.
7. For reinstallation, reverse the above procedure.
Note: When reinstalling, do not tighten the b~lt clamp
i
and the steel belt assembly screws completely.
Move the carriage forward and backward 'with your
hand, making sure that it moves smoothly in both
directions. If carriage movement is normal,
secure the screws.