Hologic QDR 4500 Technical Manual page 149

1. Using the Motor Control Pad, move the table in, for easier access to the XRC.
2. Turn off the QDR 4500 computer and instrument power switches, and main power
circuit breaker.
3. Remove the lower C-arm cover by removing 2 Phillips screws and sliding it out from
the front. Also remove the bottom cover.
4. Remove the 4 Phillips screws holding the XRC (see Figure 5-9).
5. Pull the XRC forward far enough to access the cables.
6. Unplug the cables and remove the XRC.
7. To replace the XRC reverse the steps.
8. Perform the Area, BMD and BMC Calibration procedure in the Alignment and
Calibration section of this manual.
9. Perform the Test Scan Modes procedure in the Installation section of this manual.
Section 5 - Remove & Replace
5-19