IBM 5150 Hardware Maintenance Manual page 216

5. Place carriage motor onto motor mounts
III.
6. Install screws into motor base (do not tighten)
II.
7. Perform carriage belt adjustment (See page 3-35).
8. Replace top cover (See page 3-91).
9. Replace ribbon cartridge.
10. Replace access cover.
11. Replace forms rack.
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