[. . . ] MFG Code: The MFG Code indicates the year and quarter the projector was built. See example below: MFG Code Letter H J K L M 1989 1990 1991 1992 1993 1 2 3 4 1 Digit Jan ­ Mar Apr ­ Jun Jul ­ Sep Oct ­ Dec Jan ­ Mar Part Numbers All components available on a replacement basis are listed with their 3M identification number. The parts identification list opposite each illustration provides the description adequate to identify components. Locating and Identifying a Part If physical appearance and general location of an item are known: 1. Use the Overview illustration to determine which section includes the item. [. . . ] . E 1992 3M 5 3Mt Model 2100 Overhead Projector Section 3 TRIPLET HEAD ASSEMBLY (AFTER S/N 421446) Illustrated Parts Breakdown 5 6 3 4 7 2 8 9 18 17 16 10 11 15 12 13 14 8 1 E 1992 3M 6 3Mt Model 2100 Overhead Projector Section 3 TRIPLET HEAD ASSEMBLY (AFTER S/N 421446) Item No. Part Number Description Illustrated Parts Breakdown Qty 1 1 1 1 2 2 3 1 2 3 1 1 1 1 1 1 1 1 2 2 2 1 1A . TRIPLET HEAD ASSEMBLY 338mm (13. 3 F. L. ) (After S/N 546508) (Dark Grey) . TRIPLET HEAD ASSEMBLY (Charcoal Brown) 338mm (13. 3 F. L. ) (Prior to S/N 546508) . SCREW, Self-Tap, Thread Forming, Phillips, Washer Head, 8-18 X 1/2, Steel . . E 1992 3M 7 3Mt Model 2100 Overhead Projector Section 4 TRIPLET HEAD ASSEMBLY (PRIOR TO S/N 421446) Illustrated Parts Breakdown 9 2 3 45 1 11 3 4 18 12 16 6 10 7 8 17 15 13 14 19 E 1992 3M 8 3Mt Model 2100 Overhead Projector Section 4 TRIPLET HEAD ASSEMBLY (PRIOR TO S/N 421446) Item No. 1 . . . . . . . . . . Description Qty 1 1 2 2 1 1 2 4 3 1 2 1 1 1 2 2 1 3 COVER, Head (Charcoal Brown) . SCREW, Phillips, Pan Head, "B" Thread Forming, 6-20 X 5/16 . . E 1992 3M 9 3Mt Model 2100 Overhead Projector Illustrated Parts Breakdown Section 5 FOCUS MECHANISM ASSEMBLY (AFTER S/N 422868) 6 22 16 5 17 18 16 14 8 2 19 16 20 12 20 21 4 3 13 8 21 13 7 15 15 1 11 10 16 13 15 9 Note: FOCUS KIT (to eliminate focus slipping) 78-8054-1613-4 (Light Grey) 78-8054-1614-2 (Charcoal) E 1992 3M 10 3Mt Model 2100 Overhead Projector Illustrated Parts Breakdown Section 5 FOCUS MECHANISM ASSEMBLY (AFTER S/N 422868) Item No. 1A . . Description Qty 1 1 1 1 4 1 1 4 1 1 4 1 1 1 1 1 1 2 2 1 2 1 2 4 4 1 1 1 1 3 2 1 ARM, Focus Mechanism (Medium Grey) (After S/N 546176) . CAP, Focus Mechanism (Light Grey) (Prior to S/N 546173) (2130, 2160) . . E 1992 3M 11 3Mt Model 2100 Overhead Projector Illustrated Parts Breakdown Section 6 FOCUS MECHANISM ASSEMBLY (PRIOR TO S/N 422868) 1 3 18 2 20 17 16 19 16 15 7 14 13 13 16 15 4 8 12 8 11 10 Note: FOCUS KIT (to eliminate focus slipping) 78-8054-1613-4 (Light Grey) 78-8054-1614-2 (Charcoal) 15 9 13 E 1992 3M 12 3Mt Model 2100 Overhead Projector Illustrated Parts Breakdown Section 6 FOCUS MECHANISM ASSEMBLY (PRIOR TO S/N 422868) Item No. 1 . . . . . . . . . . Description Qty 1 1 4 1 1 1 1 1 1 1 2 2 1 2 1 2 4 4 1 1 ARM, Focus Mechanism (Light Grey) . . E 1992 3M 13 3Mt Model 2100 Overhead Projector Section 7 TOP COVER ASSEMBLIES 15 14 Illustrated Parts Breakdown 1 16 17 2150/2180 13 12 11 10 10 2140/2170 2 2160 9 3 2130 8 4 5 6 7 19 E 1992 3M 14 3Mt Model 2100 Overhead Projector Section 7 TOP COVER ASSEMBLY Item No. 1A . . Description Qty 1 1 1 1 1 1 1 4 4 1 1 1 1 4 1 1 1 1 1 1 1 1 6 1 STAGE, Top Round (Dark Grey) (2150/2180) (After S/N 546508) . STAGE, Top Angular (Charcoal Brown) (2140/2170) (Prior to S/N 546176) . . E 1992 3M 15 3Mt Model 2100 Overhead Projector Section 8 BASE ASSEMBLY 30 1 31 31 3 9 2 9 27 23 Illustrated Parts Breakdown 22 24 16 15 17 10 33 34 32 26 4 9 28 29 14 5 25 6 9 8 12 13 7 11 E 1992 3M 16 3Mt Model 2100 Overhead Projector Section 8 BASE ASSEMBLY Item No. 1 . . . . . . . . . . Description Qty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 6 1 4 1 1 2 1 1 1 1 1 1 4 1 1 1 1 2 2 8 2 1 1 1 1 1 1 1 HOUSING, Fan . . E 1992 3M 17 3Mt Model 2100 Overhead Projector Section 9 FIXED POST ASSEMBLY Illustrated Parts Breakdown 1 2 3 For Mounting Platform See Section 10 1 8 4 2 6 5 8 8 7 8 8 For Focus Mechanism See Sections 5 and 6 9 13 16 10 4 14 12 15 11 E 1992 3M 18 3Mt Model 2100 Overhead Projector Section 9 FIXED POST ASSEMBLY Item No. 1 . . . . . . . . . . Illustrated Parts Breakdown Part Number 26-1003-8595-9 78-8005-0629-3 78-8054-1269-5 78-8011-1251-3 78-8054-1404-8 78-8054-1388-3 78-8054-1412-1 26-1002-6210-9 78-8656-4003-7 78-8054-1240-6 26-1000-4860-7 26-1005-6778-8 78-8011-1485-7 26-1002-5655-6 78-8011-1420-4 78-8054-1649-8 78-8054-1107-7 . . . [. . . ] . E 1992 3M 29 3Mt Model 2100 Overhead Projector Section 14 ROLLER ATTACHMENT Illustrated Parts Breakdown Illustration Not Available Section 14 ROLLER ATTACHMENT Item No. 1 . . . . . . . . . . Part Number 78-8054-1373-5 78-8054-1377-6 78-8161-4222-4 78-8011-1391-7 78-8014-7291-7 78-8015-2206-7 26-1000-0336-2 78-8613-8300-4 78-8697-9653-8 78-8659-2933-1 12-7991-1506-3 78-8015-2305-7 78-8015-2307-3 78-8054-1376-8 78-8015-2308-1 . . . . . . Description Qty 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 BRACKET-HINGED ASSEMBLY . . E 1992 3M 30 3Mt Model 2100 Overhead Projector Appendix A FIELD UPDATE KITS Illustrated Parts Breakdown Item No. 1 2 3 4 . . . . . . . . . [. . . ]