20 Maintaining Your GC
2 Removing Covers
To Remove the Electronics Cover
You may need to raise the electronics cover to perform NPD
maintenance. The steps required depend on whether or not
an FPD is installed.
Without FPD installed:
1 Raise or remove the detector top cover.
2 Loosen the screw on the left side of the electronics cover.
3 Raise the cover to the vertical position.
With FPD installed:
1 Raise or remove the detector top cover.
2 Loosen the screw on the left side of the electronics cover.
3 Loosen the two thumbscrews in the tray below the PMT,
and remove the two screws in the back of the tray.
4 Remove the tray from the electronics cover.
5 Raise the cover to the vertical position.
Raising the electronics cover exposes the GC electronics.
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