Section 5 - Remove & Replace
5-11
4.
Remove the front endcap from the X table drive assembly. The cover is held on with 2
hex screws.
5.
Remove 6 Phillips screws from the right side cover (of the X table drive assembly) and
slide the cover out from the front. This provides access to the encoder and belt.
6.
Remove 5 flat head Phillips screws from the upper pedestal cover and remove the cover.
This provides access to the Motor Controller Board.
7.
Unplug the encoder from the Motor Controller Board and pull out the cable.
8.
Remove the hose clamp fastener holding the encoder to the belt drive.
9.
Remove the encoder from the bracket assembly.
10.
Replace the encoder on the bracket, install the tubing but do not attach the clamp.
11.
Perform the MOTOR$TX calibration procedure.
Note:
When starting the MOTOR$TX calibration procedure, make sure the encoder
is not
clamped to the drive shaft tubing
TABLE Z FRUS (A and SL only)
This section describes how to remove and replace the FRUs associated with Table Z (up and
down) motion of the QDR 4500 (see Figure 5-5).
Pedestal
To remove and replace either pedestal, refer to Figure 5-6 and follow the procedure below. The
procedure requires two pieces of 2 x 4 lumber, approximately 2.5 to 3 foot long, and two pieces
of foam padding.
1.
Remove the electronics tray covers.
2.
Remove 6 flat head Phillips screws from the upper pedestal cover and remove the cover.
3.
Remove 5 flat head Phillips screws from the lower pedestal cover and remove the cover.
4.
Move the C-arm towards the pedestal to be replaced, but ensure that the service
switches on the TZ Motor Controller board are accessible.
5.
Place two 2 x 4s on end, on top of the tank. The 2 x 4s should be oriented front to back,
on the tank, to support the table. Place foam padding between the 2 x 4s and the table to
protect the tape safety switch.
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