Agilent Technologies 8890, Maintaining Manual

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2 Removing Covers
To Remove the Electronics Cover
20 Maintaining Your GC
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.
WARNING
Be careful! With the power switch on, potentially dangerous voltages also exist:
• All electronics boards in the instrument.
• The internal wires and cables connected to these boards.
• The wires for the oven heater.
The covers shield these parts as the parts may be hot enough to cause burns. Never remove
a cover unless the instrument is unplugged.
CAUTION
Raising the electronics cover exposes the GC electronics.
Without FPD+ installed:
1 Turn off the GC and unplug the power cord.
2 Raise or remove the detector top cover.
3 Loosen the captive screws on the right side cover, slide the cover backwards, then remove.
4 Loosen the captive screw located on the left side of the electronics cover.
5 Reach under the back of the electronics cover to release the clip holding it in place, then
raise the electronics cover and remove.
With FPD+ installed:
1 Turn off the GC and unplug the power cord.
2 Raise or remove the detector top cover.
Figure 3. 8890 GC electronics cover
Electronics cover
Loosen screw