Unit Covers
Locate the diagram of the unit you are working on. If you have a 270 system unit in a rack, go to “270 unit in a rack” on page 16.
270 and 820 System Units
To access the PCI card location, you need to remove the back cover and the side cover:
__ 1. Place your hand near the bottom of the back cover and lift up and out.
__ 2. Attention: If removing side cover while powered on, errors may occur due to electromagnetic interference.
Remove the right side cover (view from back) by loosening the thumbscrews and sliding the cover from front to back until it stops.
__ 3. Pull the cover out.
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