Chapter 7 297
Replacing Major Assemblies
Instrument Cover
Replacement
1. Disconnect the analyzer from ac power.
CAUTION To prevent damage when replacing the instrument cover, remember the
following:
• Place a soft cloth or towel between the work surface and the front
frame.
• Ensure that cables do not bind between the instrument cover and its
internal assemblies.
2. Carefully place the analyzer on the work surface with the front
frame facing down.
3. Replace the instrument cover assembly by matching the seam on the
cover with the bottom of the instrument.
4. Fit the leading edge of the cover completely into the slot on the back
of the front-frame assembly. The cover should fit snugly against the
EMI gasket in the slot.
5. Tighten the four rear-feet screws with a 4-mm hex wrench.
6. Replace the four screws and washers attaching the instrument cover
assembly to the rear frame.
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