IBM RT PC 10 Hardware Maintenance And Service page 8

3. Set the power switch on the system unit to Off.
4. Remove the rear cover (page 4-10).
5. Remove the top cover (page 4-12).
6. Check for alterations or attachments. If there are any, check for
obvious safety hazards such as broken wires, sharp edges, or broken
insulation.
7. Check the internal cables for damage.
8. Check for dirt, water, and any other contamination within the system
unit.
Safety
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