IBM PCjr Hardware Maintenance And Service page 362

Base Cover Replacement 1438
1. Set base cover on work surface.
2. Replace heat sink/power transistor assembly
(1462).
3. Replace print mechanism assembly (1490).
4. Replace control circuit card (1417).
5. Replace driver circuit card (1422).
6. Replace fuse-filter card/power cord (1454).
7. Replace power transformer (1477).
8. Replace top cover (1434).
9. Replace access cover (1430).
10. Replace forms rack (1440).
4-1400-30 Graphics Printer