3M Projector 2100 Owner's Manual
Contents
1. D Center circle of Fresnel Lens should exactly coincide with center of X E After centering remove rubber bands one at a time and retighten corner screws CENTER FOR FRESNEL LENS Aligning the Fresnel Lens 9 92 MODEL 2100 OVERHEAD PROJECTOR COLOR TUNING CABLE COLOR TUNING CABLE Before Serial Number 422868 After Serial Number 422868 NOTE No adjustment Tension in cable should be 3 16 maximum A Raise the Top Cover Assembly by pulling the Release Latch and lift up See Fin TOP COVER T ASSEMBLY B Turn the Color Tuning Knob clockwise to the maximum C While holding the Cable Screw loosen the Cable Nut Using pliers pull the slack out of the cable D Retighten Cable Nut and Screw See COLOR CABLE CABLE NUT TUNING KNOB CABLE SCREW CABLE 9 92 4 5 MODEL 2100 OVERHEAD PROJECTOR POST FOLDING If POST is not perpendicular to the body of the projector proceed with the following steps using Figures below as reference 1 Loosen SET SCREW 2 Puta square on the body of the projector and against the POST 3 Turn the CAM clockwise to adjust POST 4 Re tighten SET SCREW NOTE POST SHOULD FOLD DOWN WITHOUT TOO MUCH FORCE 3 Bend down the appropriate LOCKING TAB CAM SCREW SET SCREW s LA LOCKING TAB 4 6 LAMPCHANGER CABLE NOTE Tension on cable should be a maximum of 3 16 Hold the Cable Nuts 2 with wrench and2. Bracket lens TOP HEAD SHROUD SUPPORT NONE BRACKET When replacing the Fresnel Lens make certain the bow in the lens is in the convex upward position when projector is upright See Section 4 page 4 4 for proper alignment of Fresnel Lens MODEL 2100 OVERHEAD PROJECTOR STAGE GLASS 1 Remove Top Cover Assembly See page 6 1 2 Remove the Fresnel Lens See page 6 1 3 Remove the six 6 tamper proof screws using a T15 Torx Driver 3M Part Number 26 1005 831 7 3 4 Remove the MASK black frame and Stage Glass 5 To reassemble make certain the beveled edges on the Stage Glass are facing down and the 3M logo is in the lower left front corner 2140 2150 only 2130 does not have logo NOTE This drawing of Stage is up side down 3M LOGO 6 Reassemble MASK and Fresnel Lens in reverse order as noted above 6 2 FOCUSING ASSEMBLY 1 Remove knob 2 Before disassembling turn Adjusting Screw clockwise to loosen assembly 3 Remove the four A screws and cover All internal parts are now exposed 4 Before re assembling turn adjusting screw counterclockwise This procedure makes re assembly easier 5 After re assembly is completed readjust the focus tension ADJUSTING SCREW Before Serial Number 422867 ADJUSTING SCREW After Serial Number 422867 MODEL 2100 OVERHEAD PROJECTOR How to remove and install the condenser lens when equipped Caution Wear safety glass
3. loosen the Cable Screws 2 B Move the screws with nuts outward to tighten cable C Retighten screws with nuts after adjustment is made See Figure CABLE SCREWS BEHIND NUTS PUSH HERE FOR TENSION CHECK CABLE NUTS Before Serial Number 422868 On projectors after serial number 422868 there is no cable adjustment 9 92 MODEL 2100 OVERHEAD PROJECTOR SECTION 5 ELECTRICAL DIAGRAMS 100 VOLT LAMP CHANGE ACTUATOR Lamp Primary L B Lamp Secondary M 1 Motor Fan SW 1 Interlock Safety SW 2 Switch On Off SW 3 Switch Lamp Change T 1 Transformer Thermostat Safety MODEL 2100 2160 2 TS 1 LAMP CHANGE AND INDICATOR P 2 BOARD Lamp Primary L B Lamp Secondary M 1 Motor Fan SW 1 Interlock Safety SW 2 Switch On Off T 1 Transformer Thermostat Safety MODEL 2100 2170 5 1 MODEL 2100 OVERHEAD PROJECTOR 100 VOLT TS 1 LAMP CHANGE AND INDICATOR P 2 BOARD Lamp Primary L B Lamp Secondary M 1 Motor Fan SW 1 Interlock Safety SW 2 Switch On Off T 1 Transformer Thermostat Safety MODEL 2100 2180 LAMP CHANGE amp INDICATOR BOARD SINGLE INDICATOR MODEL 2100 2170 5 2 MODEL 2100 OVERHEAD PROJECTOR 100 VOLT LAMP CHANGE amp INDICATOR BOARD D1 IN4004 D2 IN4934 P2 MODEL 2100 2180 5 3 MODEL 2100 OVERHEAD PROJECTOR 120 VOLT SW 1 SW 2 LAMP
4. top of head Weight 2216 10 0 Kg 2180 2510 11 3 Kg 2130 2140 2150 2160 2170 4130 4140 4150 9 92 1 1 MODEL 2100 OVERHEAD PROJECTOR MODEL 2100 OVERHEAD PROJECTOR VERSIONS MDL ALPH STOCK NUMBER COUNTRY V amp HZ AGENCY AMP STAGE L INDCR CORD 2160 AHAA 78 9236 3555 7 Australia 240 50 SAA 1 7 3112 No 14 5 2170 AHBA 78 9236 3556 5 Australia 240 50 SAA 1 7 11 2 No 14 5 2180 AHCA 78 9236 3557 3 Australia 240 50 SAA 1 7 11 2 YES 14 5 2160 AHAS 78 9236 3552 4 Europe 230 50 VDE 1 7 11 2 No 14 5 2170 AHBS 78 9236 3553 2 Europe 230 50 VDE 1 7 11 2 No 14 5 2180 AHCS 78 9236 3554 0 Europe 230 50 VDE 1 7 11 2 YES 14 5 2160 78 9236 3558 1 Hong Kong 230 50 1 7 11 2 No 14 5 2170 AHBH 78 9236 3559 9 Hong Kong 230 50 1 7 11 2 14 5 2180 AHCH 78 9236 3560 7 Hong Kong 230 50 1 7 11 2 YES 14 5 2160 78 9236 3549 0 Japan 100 50 60 MITI 3 6 11 2 No 14 5 2170 ABBJ 78 9236 3550 8 Japan 100 50 60 MITI 3 6 11 2 No 14 5 2180 78 9236 3551 6 Japan 100 50 60 MITI 3 6 11 2 YES 14 5 2160 78 9236 3564 9 New Zealand 240 50 1 7 11 2 No 14 5 2170 AHBN 78 9236 3565 6 New Zealand 240 50 1 7 11 2 No 14 5 2180 AHCN 78 9236 3566 4 New Zealand 240 50 1 7 11 2 YES 14 5 2130 AAAD 78 9236 3970 8 Saudi Arabia 127 60 3 0 11 2 No 14 5 2140 AABD 78 9236 3971 6 Saudi Arabia 127 60 3 0 11 2 No 14 5 2150 AACD 78 9236 3972 4 Saudi Arabia 127 60 3 0 11 2 No 14 5 2160 AHAB 78 9236 3567 2 South Africa
5. CHANGE amp Primary ACTUATOR Lamp Secondary Motor Fan interlock Safety Switch On Off Switch Lamp Change Transformer Thermostat Safety MODEL 2100 AJAT 2130 AJAC 4130 AJAW 2130 120 127 VOLT RESISTOR KIT 127V ONLY 78 8054 1585 4 TS 1 Lamp Primary L B Lamp Secondary M 1 Motor Fan SW 1 Interlock Safety MODEL AJBT 2140 SW 2 Switch On Off AJBC 4140 Ed Transformer fir xej E Sal Thermostat Safetv AJCV 2150 5 4 MODEL 2100 OVERHEAD PROJECTOR 120 VOLT LAMP CHANGE amp INDICATOR BOARD SINGLE INDICATOR MODEL 2100 AJBT 2140 AJBC 4140 LAMP CHANGE amp INDICATOR BOARD DOUBLE INDICATOR 07 MODEL 2100 AJCT 2150 AJCC 4150 5 5 MODEL 2100 OVERHEAD PROJECTOR 220 230 240 VOLT SW 1 F 1 SW 2 TS 1 Fuse L 1 Lamp M 1 Motor Fan SW 1 Interlock Safety SW 2 Switch On Off T 1 Transformer Thermostat Safety MODEL 2100 2160 F 1 TS 1 Fuse L A Lamp Primary L B Lamp Secondary M 1 Motor Fan SW 1 Interlock Safety SW 2 Switch On Off T 1 Transformer Thermostat Safety LAMP CHANGE AND INDICATOR P 2 BOARD MODEL 2100 2170 5 6 MODEL 2100 OVERHEAD PROJECTOR 220 230 240 VOLT d m SOLID STATE POWER SUPPL LAMP CHANGE AND INDICATOR BOARD 2 MODEL 2100 2180 Fuse L A Lamp Primary L B Lamp SEcondary M
6. projection head Proper alignment of the optical components and a clean machine are essential if the maximum operating capabilities of the overhead projector are to be realized Cleaning and alignment procedures are discussed in Sections 2 and 4 inclusive Cooling See Figure 1 3 Cooling of the overhead projector is accomplished by a motor driven fan located next to the lamp housing The cooling air enters the projector through opening A and exits through opening B See Figure 1 3 It s important that the flow of cooling air not be restricted either by placing projector too close to a wall about one foot clez fore 1 3 9 92 MODEL 2100 OVERHEAD PROJECTOR SECTION 2 OPERATION AND MAINTENANCE SET UP PROCEDURE 1 Connect the power cord to a properly grounded electrical outlet Electrical requirements are listed on the serial plate located under the base of the projector 2 Place the projector on a level surface and turn the projector on by pushing down on the ON OFF switch SWITCH POWER CORD CAUTION Do not look in the front projection lens when lamp is on 3 Adjust the image to the screen elevation by moving the front projection lens upward or downward on the DOUBLET HEAD ASSEMBLY and the mirror on the TRIPLET HEAD ASSEMBLY See CORRECTION LEVER DOUBLET CLOSED LENS TRIPLET OPEN LENS PROJECTION HEAD PROJECTION HEAD 14 FL 355MM 13 0 FL 330MM SINGL
7. the stage glass and the top side of the Fresnel Lens observe the following steps 1 Pull the Release Latch and lift the top cover Top Cover Assembly See Figure 2 Remove the Top Cover Assembly by pull ing either one of two hinges outward until TOP COVER ASSEMBLY RELEASE LATCH the hinge pin is out of the hole Slide the complete Top Cover Assembly in the oppo site direction to release the second hinge and lift up and out See Figure HINGE PINS 3 Loosen the four screws holding the Fresnel Lens in place NOTE Do not remove the SCrews 4 Turn the retaining clips off to one side 5 Remove the Fresnel Lens 6 All surfaces can now be cleaned 7 Replace all components in reverse order Mirrors The mirror in the Open Lens Projection Head of all Model 2100 4100 projectors are front surface mirrors and must NOT be cleaned with a cloth and lens cleaner Remove any surface dirt on this mirror with a Camel Hair Brush only Prior to serial number 435242 a front sur face type Chassis Mirror was used clean as above After serial number 435242 a second surface high reflective type is used and may be cleaned with a soft cloth and lens cleaner 2 4 9 92 MODEL 2100 OVERHEAD PROJECTOR LUBRICATION As needed and upon new parts installation lubricate lightly the following area with Anderol No 757 Grease 3M Part No 78 8000 8079 4 For reference on the lubricating points see the three blow up
8. 0 No holes opaque NOTE When the projector is turned on the red X will momentarily light This is a characteristic of the projector The Lamp Indicator indicates status of projection lamp as defined on the following labels Y 0 METHOD 1 A red X will appear on the lamp symbol when that lamp is burned out Switch to the standby lamp The X will continue to light until the defective lamp is changed 0 2 0 ncmo md METHOD 2 A red X will appear between the two lamp symbols when a lamp is burned out Switch to the standby lamp The X will continue to light until the defective lamp is changed NOTE The Overhead Projector must remain on for 2 to 3 minutes after a lamp burns out This will allow the fan to cool the burned out lamp and prevent burned fingers Unplug the unit before replacing the lamp 9 92 MODEL 2100 OVERHEAD PROJECTOR 2 3 MODEL 2100 OVERHEAD PROJECTOR CLEANING The optical components of the overhead pro jector require occasional cleaning to remove the dust and oil which tends to accumulate and absorb light 3M Brand Lens Cleaner Part No 78 6969 7086 6 is recommended A small amount of mild detergent in water will serve as asubstitute Use soft lint free cloths one to apply the solution and another for drying NOTE Never use paper lens tissues on projection lenses as they may dam age the lens Cleaning Stage Glass and Fresnel Lens When cleaning the underside of
9. 1 Motor Fan SW 1 Interlock Safety Switch On Off Thermostat Safety LAMP CHANGE amp INDICATOR BOARD SINGLE INDICATOR MODEL 2100 2170 5 7 MODEL 2100 OVERHEAD PROJECTOR 220 230 240 VOLT LAMP CHANGE amp INDICATOR BOARD DUAL INDICATOR FOR VDE D1 IN4004 D2 IN4934 P2 MODEL 2100 2180 5 8 MODEL 2100 OVERHEAD PROJECTOR SECTION 6 DISASSEMBLY RE ASSEMBLY PROJECTION HEAD ASSEMBLY DOUBLET TOP COVER ASSEMBLY 1 To disassemble Head Assembly from Head 1 Raise the Top Cover Assembly by pulling the oupport Bracket Release Lever and lifting up A Remove Screw Cap from Top Shroud 2 Using both hands pull either one of the two B Remove the three screws A hinges outward until the hinge pin is out of the hole Slide the complete TOP COVER C Slide the Head Assembly off Support ASSEMBLY in the opposite direction to Bracket release the second hinge and lift up and out SCREW CAP T TOP SHROUD SR P HEAD SUPPORT BRACKET PROJECTION HEAD ASSEMBLY TRIPLET FRESNEL LENS 2 To disassemble Head Assembly from Head Support Bracket 1 R Top C A bly See Fi A Remove the two screws A emove Top Cover Assembly See Figure above B Lift the Top Shroud off assembly 2 Loosen the four 4 screws holding the four C Remove the three screws 4 corner clips and lens DO NOT REMOVE D Slide the Head Assembly off Support SCREWS Turn clips to side and remove
10. 240 50 SABS 17 No 14 5 2170 AHBB 78 9236 3568 0 South Africa 240 50 SABS 12 112 No 14 5 2180 AHCB 78 9236 3569 8 South Africa 240 50 SABS 1 7 11 2 YES 14 5 2160 AHAU 78 9236 3561 5 U K Sing Mal 240 50 1 7 112 No 14 5 2170 AHBU 78 9236 3562 3 U KJ Sing Mal 240 50 1 7 11 2 No 14 5 2180 AHCU 78 9236 3563 1 U K Sing Mal 240 50 1 7 11 2 No 14 5 2130 AJAW 78 9236 3984 9 U S 120 60 UL CSA 3 0 10 5 No 14 5 2130 AJAT 78 9236 3745 4 U S Canada 120 60 UL CSA 30 10 5 No 14 5 2140 AJBT 78 9236 3746 2 U S Canada 120 60 UL CSA 3 0 10 5 No 14 5 2150 78 9236 3747 0 U S Canada 120 60 UL CSA 3 0 10 5 YES 14 5 2130 AJAV 78 9236 3937 7 U S Taiwan 120 60 3 0 11 2 No 14 5 2140 AJBV 78 9236 3938 5 U S Taiwan 120 60 3 0 11 2 No 14 5 2150 AJCV 78 9236 3939 3 U S Taiwan 120 60 3 0 11 2 YES 14 5 1 2 9 92 MODEL 2100 OVERHEAD PROJECTOR Electrical 2130 2140 2150 2160 2170 2180 2160 2170 2180 4130 4140 41 50 Voltage 120 127 VAC 100VAC 220 230 240VAC Frequency 60HZ 50 60HZ 5OHZ Current Rating 3 0 Amps 3 6 Amps 1 7 Amps Power Cord 14 1 2 4 4mm 14 1 2 4 4mm 14 1 2 4 4mm Agency Approval UL CSA J VDE NEMKO SETI Fuse F4 Amp 250 Volt SEMKO SEV F4 Amp 250 Volt Mechanical Safety interlock Shuts off power to the projector when the top cover assembly is opened Safety thermostat Cuts power to the lamp if the projector exceeds safe operating temperature Color tuning knob Allows projector to
11. ET CLOSED LENS PROJECTION HEAD 11 5 FL 293MM WES RN N FOCUS 4 KNOB Cc STAGE GLASS Sal 5 Figure 2 2 4 Place a transparency on the stage glass and focus the projected image by rotating the Focus Knob See Figure 2 3 5 maintain top to bottom focus when the screen is not perpendicular to the projected image engage the FOCUS CORRECTION LEVER located on the under side of the TRIPLET HEAD ASSEMBLY using the following procedure NOTE THE PROJECTION SCREEN MUST BE IN THE VERTICAL 2 9 92 POSITION MODEL 2100 OVERHEAD PROJECTOR A Pull the mirror down as the FOCUS CORRECTION LEVER is pushed to the rear of the head assembly B Raise the mirror back to the original position and refocus using the FO CUS KNOB 6 Rotate the Color Tuning Knob until the projected image is free of any yellow or blue corners To remove blue corners rotate the dial counterclockwise Toremove yellow corners rotate the dial clockwise d p AW COLOR TUNING KNOB 7 Correct any vertical keystoning by tilting the screen until it is perpen dicular to the light beam axis SCREEN VERTICAL KEYSTONING 2 2 9 92 Correct any horizontal keystoning by moving the projector until it is perpen dicular with the screen HORIZONTAL EAM SCREEN KEYSTONING LAMP MANAGEMENT SYSTEM Lamp Indicator Pertains only to models equipped with lamp indicators 2130 413
12. Model 2100 4100 Overhead Projector Service Manual Order the M2100 Illustrated Parts Breakdown separately Stock 78 6970 4936 5 8 6970 1335 3 9 92 Visual Systems Division 3M Austin CenterBuilding A145 5N 01 Austin TX 78726 9000 MODEL 2100 OVERHEAD PROJECTOR TABLE OF CONTENTS Technical Support Hotline 1 800 328 1371 U S amp Canada TITLE PAGE NUMBER Section 1 Introduction 1 1 1 1 Principles of 1 3 PE OOS 1 3 zeo me 1 3 section 2 Operation and Maintenance 2 1 Sep DS 186 2 1 Lamp Management System 2 3 Cleaning JI 2 4 Cleaning Stage and Fresnel 2 4 2 4 Lubrication kai 2 5 Section Troubleshooting 3 1 Section 4 Adjustments nnns 4 1 4 1 4 1 Projector Check out 4 1 Optical AO 4 3 Square IMAGE 4 3 Focus Mechanism RR ET 4 4 Aligaing the Fresnel LENS eccsscsccesacesovsseecic
13. OJECTOR CHECK OUT FACILITIES Reliable check out and optical alignment of the overhead projectors can be accomplished only If proper facilities are available see Figure This requires a permanent viewing screen and test stand in the dealer s shop thus enabling high check out standards to be established and maintained Service personnel will also find that the use of permanent test facilities will assure a better check out job in considerably less time than otherwise would be required Only two low cost items are required to provide proper check out facilities a test viewing screen 60 by 60 inches with a flat non reflective white surface and a bench or test stand permanently located about 8 feet from the screen The screen should be vertical and can most easily be provided by applying a flat white paint to a 60 by 60 inch area of a smooth wall If a smooth wall is not available a piece of wallboard painted flat white or a white window shade of the proper size can be mounted in the selected area The test stand should be high enough to provide easy access to all parts of the Overhead Projector when the projector is placed on the stand for check out An electrical outlet and a switch should be built into the test stand to facilitate making electrical connections to the projector SHOP WALL SPOT MARKED ON WALL Arrangement of Check out Area The following steps provide a simple procedure for setting up the
14. aining the image in focus at all times until the projected light just fills the 60 by 60 inch screen Be sure the image is in focus SPOT MARKED ON WALL SHOP WALL 60 BY 60 INCH AREA TEST STAND Locating Center of Projection Area NOTE If floor or ceiling lines are not available stretch a cord or string from the projection lens to the wall and use a carpenter s square or other square object to find the point at which the cord is perfectly perpendicular to the wall 3 Mark the position of the stand on the floor and the projector on the stand so that the perpendicular relationship of the line from the projection lens to the wall is not lost while making subsequent adjustments Correct Tilt of Projector 4 2 9 92 OPTICAL ALIGNMENT Proper alignment of the optical system is essential for good resolution and uniform illumination Poor resolution in one corner and either red or blue in the corners of the projected image are indications of poor alignment The following components should be checked and adjusted if necessary before aligning the overhead projector SQUARE IMAGE A Set projector on a level table Project an image onto a screen or wall Axis of beam must be perpendicular to projection surface Check to see that side of projected image are vertical C Ifthe image is not square remove CAP and loosen the three 3 Head Fastening Screws Doublet Head and move the projection head ei
15. be easily color tuned for any screen size 1 0m x 1 0m 40 x 40 to 2 8m x 2 8m 110 x 110 Projection Head Tilt 0 20 All Heads Lamp Changer when lamp burns out switch to standby lamp Optical Lamp ANSI Code FNT 24 Volt 275 Watt Lamp Life 75 Hours 2130 2140 2150 2160 2170 2180 4130 41 40 4150 Illumination 2000 lumens typical 2100 lumens typical 1800 lumens minimum 1900 lumens minimum Mirrors Chassis mirror is second surface high reflective type After serial no 435242 Projection mirror is front surface high reflective type 2130 2140 2160 2170 2150 2180 4130 4140 4150 Head Projection 355mm 14 0 F L 327 12 9 F L Doublet Triplet w focus 293mm 11 5 F L correction Singlet 330mm 13 F L After serial no 411964 2130 21 40 2150 2160 2170 2180 4130 41 40 4150 otage 267mm x 267mm 285mm x 285mm Transmissive 10 5 x 10 5 11 2 x 11 2 Aperture 9 92 1 2 MODEL 2100 OVERHEAD PROJECTOR PRINCIPLES OF OPERATION Optics See Figure 1 2 The light source for the Overhead Projector 15 275 watt 24 volt Tungsten Lamp listed as ANSI Code FNT and rated at 75 hours An external reflector is needed with this lamp Care should be exercised to prevent excessive vibration or jarring of the projector when the lamp is on The lamp filament becomes more brittle at the operating temperature of the projector and shocks may cause premature failure of the lamp The glass envelope
16. ector broken missing seated in the number one To tighten turn screw counterclockwise To loosen turn clockwise Add update kit Focus mechanism slips or is too tight Focus tension screw needs adjustment Lamp does not energize but Replace lamp fan motor does energize Is lamp burned out Replace overheat thermostat Is lamp of proper type See Replace lamp sensing switch label on underside of top cover only on projectors equipped Is lamp properly seated down in with lamp changer its socket and vertical Loose or broken wire If unit is equipped with a lamp connection changer is changer lever fully Defective power supply seated in the number one Neither lamp nor fan motor On off switch defective energizes s power cord plugged into Defective interlock switch electrical outlet Loose or broken wire Is outlet supplying power to connection projector On off switch out of adjustment Replace Fuse if equipped 9 92 3 1 MODEL 2100 OVERHEAD PROJECTOR TROUBLESHOOTING continued SYMPTOM CHECK CAUSE SOLUTIONS Fan motor does not rotate but ls anything blocking rotation of Loose or broken wire lamp does energize fan motor connection to motor Defective fan motor Both lamps of units with lamp Wires crossed and touching Defective lamp sensing switch changer energize at once Lamp changer switch Projector does not operate Projector plugged in Defective
17. es when removing lens 020 Feeler Gage 020 to 030 Gap after installation Illustration A Illustration B 1 Insert a Pin Punch or Drill Rod into the hole in the Tab see illustration A 2 Release the lens by bending the Tab 3 Install the new lens and bend the Tab back into place Caution Do not overtighten the tab The lens must have enough clearance for expansion There should be a 20 to 30 gap between the lens and lens bracket Illustration B Caution Be careful not to scratch or chip the lens while installing 9 92 6 3
18. esecessossesesavensdeesecesueses 4 4 Color Tuning 4 5 FOSI FOIQIMO a E 4 6 Lampchanger 4 6 Section 5 Electrical Diagrams enn 5 1 Section 6 Disassembly Re assembly 6 1 Projection Head Assembly Doublet 6 1 Projection Head Assembly Triplet 6 1 Top Cover Assembly 6 1 Fresnel Lens 6 1 AS S aa NN CI LIINC DII EE 6 2 Focusing Assembly ccccccceeccsscccececeeeeseeeeeesaeeseeeseeesaueeeaeesees 6 2 Condenser Lens nennen nnne nns 6 3 Section 7 Illustrated Parts 7 1 Published separately Stock 78 6970 4936 5 9 92 MODEL 2100 OVERHEAD PROJECTOR SECTION 1 INTRODUCTION This service manual contains servicing instruction troubleshooting guide adjustments electrical diagrams assembly dis assembly of parts and the illustrated parts list ANGULAR BODY 2130 4130 2140 4140 2160 2170 ROUND BODY 2150 4150 2180 SPECIFICATIONS Physical Width 15 25 387mm Depth 20 25 514mm Postin upright position 26 25 667mm Postin folded position Height 7 75 197mm 30 75 781mm Maximum
19. parts lists b Lamp Changer Assembly Before S N 439180 Folding Post Assembly Lamp Changer Assembly After S N 439180 9 92 2 5 MODEL 2100 OVERHEAD PROJECTOR SECTION 3 TROUBLESHOOTING SYMPTOM CHECK CAUSE SOLUTIONS Projected image is Is lamp of proper type See Damaged or misadjusted optics a Corners of projected image label on underside of top cover components requires appear red brown or blue Is lamp properly seated down in realignment of optics its socket and vertical Head knocked out of If unit is equipped with a lamp alignment changer is changer lever fully Adjust Color Tuning seated in the number one position b Top bottom or sides of Is lamp of proper type See Adjust optics components projected image are not label on underside of Top requires realignment of focused Cover optics ls lamp properly seated down in Lamp not seated its socket and vertical Reflector If unit is equipped with a lamp Condenser changer is changer lever fully seated in the number one position Are any of the optics c Not as bright as it should be Is lamp of proper type See Replace lamp label on underside of Top Damaged or misadjusted optics Cover components requires 15 lamp properly seated down in realignment of optics its socket and vertical Corroded wiring connection If unit is equipped with a lamp Wrong lamp on changer is changer lever fully Refl
20. permanent test facilities lt is particularly important that the projector be perfectly square with the viewing screen in order to eliminate the possibility of vertical or horizontal keystoning Even the slightest keystoning will result in unequal focusing of the projected image at the four corners and will especially affect resolution readings Therefore several of the following steps involve squaring the projected light with the screen Permanently locating the test stand and viewing screen will assure that the proper relationship once established does not change Continued on the next page 9 92 4 1 MODEL 2100 OVERHEAD PROJECTOR 1 Select a 60 by 60 inch smooth area on one wall Place a sturdy bench or test 4 Using the mark on the wall as a base stand about 8 feet from this wall area point measure 30 inches up down to Position the Overhead Projector on the the left and to the right Mark the edges test stand so that it points toward the of the resultant 60 inch square and paint wall the enclosed area a flat white or cover 2 Measure the vertical distance from the the area with a window shade wallboard floor to the center of the front projection or other substitute viewing screen lens Following a floor or ceiling line from the projector to the wall make a mark on the wall the same distance from the floor urn the projector on and focus an image on the screen Move the projector forward or backward maint
21. power cord when power switch is Top Cover all the way down Defective Interlock Switch depressed Interlock Switch functioning Replace Fuse Fuse if so equipped Broken Wire On dual lamp projectors Loose tension cable Tighten cable See Section 4 position of lamp socket does adjustments not change when lamp changer control is moved Top Cover Assembly does not Interlock switch out of Align interlock switch close completely alignment Disconnected or broken latch Cover latch movement is return spring restricted Lamps burn out High voltage Install Resistor Kit or replace transformer or change transformer tap Field Kits Available Focus Knob Slipping 8 8054 1613 4 Lt Grey 8 8054 1614 2 Charcoal If the projector is below SN401987 the knob must also be replaced 8 8054 1315 6 Resistor Kit 120V 8 8054 1443 6 Base Rail Kit for broken 8 8054 1615 9 Tech Service base rails on lamp module In the U S amp Canada Technical Support Hotline 1 800 328 1371 7 30 5 30 CST 3 2 9 92 MODEL 2100 OVERHEAD PROJECTOR SECTION 4 ADJUSTMENTS GENERAL The following section describes the adjustments that will be necessary to service the Model 2100 4100 Overhead Projectors TOOLS REQUIRED Screwdriver standard amp phillips Wrench open end Pliers standard Pliers grip ring oquare Torx Driver 15 for removal of stage glass 3M Part Number 26 1005 831 7 3 9 PR
22. should not be touched by the fingers when inserting the lamp in the lampholder Oils on the skin may combine with the glass to form blisters which also will shorten the life of the lamp The Fresnel lens located above the lamp and directly beneath the projection stage is a condensing lens which consists of a series of concentric rings each of which has a surface curvature similar to that of a thick smooth lens The Fresnel lens is made of plastic and may be severely damaged if the fan is stopped or the paths of cooling air blocked Proper alignment and direction of the Fresnel lens is essential in order to maintain the resolution and brightness uw c IscEtuI 4l MIRROR FRONT PROJECTION LENS BOTTOM LENS STAGE PROJECTOR GLASS LAMP m FRESNEL REFLECTOR LENS The stage glass provides a convenient flat surface for placing transparencies and other materials to be projected Because the light passes through the stage these projection materials must be transparent There are two 2 different projection head assemblies available for the projector One is an Open Triplet Head with focus correction which has a triplet lens and front surface mirror and the second a closed Doublet Head which has one or two condensing lens es and a front surface mirror The projection head is located directly over the center of the Fresnel Lens The projector is focused by raising or lowering the
23. ther to the left or right forward or backward When image is square tighten the center top screw first then the two bottom screws See Figure SCREW CAP STANDARD DOUBLET PROJECTION HEAD HEAD FASTENING SCREWS PROJECTION ARM HEAD HOLDER MODEL 2100 OVERHEAD PROJECTOR D To square the image on the Triplet Head remove the two Top Shroud screws and lift off the Top Shroud Follow the same procedure as used on the Doublet Head to complete adjustment Replace the Top Shroud TRIPLET HEAD HEAD FASTENING SCREWS SHROUD A SCREWS 3 PROJECTION ARM HEAD HOLDER 9 92 4 3 MODEL 2100 OVERHEAD PROJECTOR FOCUS MECHANISM If the projection head does not hold its focus position you must adjust focus knob tension or add focus kit 78 8054 1613 4 gray 78 8054 1614 2 charcoal To agjust Turn the Tension Screw counterclockwise to tighten focus assembly Turn clockwise if binding occurs TENSION SCREW NOTE Refocus the projector each time an adjustment is made 4 4 ALIGNING THE FRESNEL LENS When replacing the Fresnel Lens use the following procedure A Remove the Top Cover Assembly See Section 2 Cleaning Stage Glass and Fresnel Lens page 2 3 B Place the Top Cover Assembly upside down on a flat clean surface C With the four 4 corner screws loosened stretch two rubber bands between diagonally opposite screws forming an X pattern See Figure
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