IBM RT PC 10 Hardware Maintenance And Service page 7

Safety Inspection Guide
Use this guide to identify unsafe conditions. Use good judgment to identify
potential safety hazards not covered by this guide. If unsafe conditions are
present, determine how serious the hazards are and whether you should
continue before correcting the problem.
Do the following checks:
1. Check the covers for damage or alterations that expose the internal
parts of the system unit or for sharp edges.
2. Check the covers for proper fit to the system unit. They should be in
place and secure.
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Service Manual