Hologic DISCOVERY A, Technical Manual

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Discovery QDR Series Technical Manual
5-6
5.3.3 Table Y Belt
To remove and replace the Table Y-Belt, refer to Figure 5-2 and Figure 5-3 and follow the
procedure below:
Figure 5-3.Foot End Table Y FRUs
1. Center the table and remove the two screws that secure the tabletop in place.
2. Shut down the computer and then turn off the main circuit breaker on the foot end
pedestal.
3. Pull the tabletop to the left far enough to remove the right table rail end cover,
and remove the cover. Mark this as the right cover so that it is not confused later
with the left cover (they are not interchangeable).
4. Pull the tabletop to the right far enough to remove the left table rail end cover,
and remove the cover. Mark this as the left cover so that it is not confused later
with the right cover (they are not interchangeable).
5. At the encoder end of the belt, loosen the 2 bolts holding the tension block,
remove the tensioning nut, and remove and replace the belt.
6. Install the tension spring and tensioning nut.
7. Tighten the tension nut so that the spring is compressed to 7/8 inch. The bracket
cutout can be used as a measuring guide (the inside of the washer should be flush
with the bracket cut).
8. Tighten the two mounting bolts holding the tension block.
9. Restore power, boot the computer and login as Service.
Table Y Encoder
Table Y Belt