QDR
4500 Technical Manual
5-2
6.
Restore the motor cable shield.
Note:
When replacing the AY Motor Controller board make sure that you set the ID switch to 7.
When replacing the TZ Drive board, make sure that you set the Normal/Service switch to
Normal.
C-Arm Y Belt
To remove and replace the C-arm Y Belt refer to Figure 5-1 and follow the procedure below:
1.
Move the C-arm to the center of the table.
2.
Turn off the QDR 4500 instrument power, computer power, and main circuit breaker.
3.
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.
4.
Install the tension spring and tensioning nut.
5.
Tighten the tension nut so that the spring compresses 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).
6.
Tighten the two mounting bolts holding the tension block.
7.
Perform the MOTOR$AY calibration procedure.
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