QDR
4500 Technical Manual
5-8
5.
Unplug the encoder from the Motor Controller Board and pull out the cable.
6.
Remove the hose clamp fastener holding the encoder to the belt drive.
7.
Remove the encoder from the bracket assembly.
8.
Replace the encoder on the bracket, install the tubing but do not attach the clamp.
9.
Perform the MOTOR$TY calibration procedure.
Note:
When starting this procedure, make sure the encoder
is not
clamped to the drive shaft
tubing.
TABLE X FRUS
This section describes how to remove and replace the FRUs associated with Table X motion of
the QDR 4500 (see Figure 5-4).
Table X Motor Controller PCB
To remove and replace the TX Motor Controller board refer to Figure 5-4 and follow the
procedure below:
1.
Before removing power from the QDR 4500, move the table up as far as it will go.
2.
Remove 6 flat head Phillips screws from the upper pedestal cover and remove the cover.
3.
Turn off the QDR 4500 instrument power, computer power, and main circuit breaker.
4.
Unplug the cables on the TX Motor Controller board.
5.
To remove the board, unscrew the Phillips screws holding the board.
6.
To replace the board reverse the steps.
7.
Restore the motor cable shield.
Note:
When replacing the TX Motor Controller board ensure that the ID switch is set to 4.
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