3M™ Overhead Projector 1800  Illustrated Parts Breakdown 
 
© 3M 2004  0 
Table of Contents 
TABLE OF CONTENTS .............................................................................................................................................................0 
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LLUSTRATED PARTS BREAKDOWN (IPB) ..............................................................................................................................1 
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UICK REFERENCE PARTS INDEX...........................................................................................................................................2 
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ECTION 0.   MACHINE OVERVIEW ........................................................................................................................................3 
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ECTION 1.   INVERTED HEAD ASSEMBLY..............................................................................................................................4 
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ECTION 2.   OPEN HEAD ASSEMBLY.....................................................................................................................................5 
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ECTION 3.   CLOSED HEAD ASSEMBLY.................................................................................................................................6 
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ECTION 4.   ARM ASSEMBLY (SERIAL NUMBER 18040827 AND BELOW)..............................................................................8 
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ECTION 5.   ARM ASSEMBLY (SERIAL NUMBER 18040828 AND ABOVE) ............................................................................10 
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ECTION 6.   POST MOUNTING HARDWARE..........................................................................................................................12 
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ECTION 7.   TOP COVER ASSEMBLY (WITH TAPED-IN STAGE GLASS) ..................................................................................14 
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ECTION 8.   TOP COVER ASSEMBLY (WITH CLIPPED-IN STAGE GLASS)................................................................................16 
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ECTION 9.   BASE ASSEMBLY .............................................................................................................................................18 
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ECTION 10.   LAMP HOUSING (SINGLE ENX/FXL).............................................................................................................20 
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ECTION 11.   LAMP HOUSING (DUAL ENX/FXL)...............................................................................................................21 
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ECTION 12.   LAMP HOUSING (SINGLE FNT)......................................................................................................................22 
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ECTION 13.   LAMP HOUSING (DUAL FNT)........................................................................................................................23 
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ECTION 14.   LAMP HOUSING (DUAL EVD) .......................................................................................................................24 
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ECTION 15.   LAMP ASSEMBLY...........................................................................................................................................25 
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ECTION 16.   COOLING FAN ASSEMBLY..............................................................................................................................26 
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ECTION 17.   ROLL FILM KIT..............................................................................................................................................27 
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ECTION 18.   WIRE JUMPERS (ENX AND FXL) ..................................................................................................................28 
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ECTION 19.   WIRE JUMPERS (EVD AND FNT) ..................................................................................................................30 
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ECTION 20.   PLASTIC PARTS KIT .......................................................................................................................................32 
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ECTION 21.   SMALL ELECTRICAL PARTS KIT.....................................................................................................................32 
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ECTION 22.   HARDWARE KIT.............................................................................................................................................33 
APPENDIX A – 1800 (U.S.) SPECIFICATIONS..............................................................................................................34 
APPENDIX A – 1800 (O.U.S.) SPECIFICATIONS..........................................................................................................36 
 
 
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New and reconditioned parts are covered by the same 3M new parts limited warranty.