Studio Express 485B Repair Manual
Contents
1. 13 Removing Camera Back Backplate and Hand Strap cceecceeeeeeeeeeeees 14 Replacing Camera Back Backplate and Hand Strap ceeeceeeeeeeeeeeees 15 Disassembly Reassembly of Sub Assemblies ccccceeeeeeeeeeeeeeeeeeeeereeeeees 15 Viewfinder and Hot SOG sca aan asa kaa aie An etes 15 Shutter Release Button rire seen dede niet 19 Aperture Mechanism menu eens 20 Apert re Blad S zasenn sects occteces rennes nn enr Noms ietGneter 20 Guide Plate Click Plate or Aperture Lever cccccceceeeeeeeeeeeeeessnnnenneaaees 21 Aperture and Shutter Mechanisms from the Front Panel 23 Shutter MechaniSiM ae neue Mn ne nn rer niet 24 Sh tter BAS a ee nn ete 24 Shutter Mechanism Sub Assemblies ccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeenaeees 26 Release Slide Assembly 26 Synchro X SMIC ES oe ea eR at eee aia Aue ate patel 26 MICRO NC Re ead add bet cans onic tierce torte bec di et D 27 Shutter Drive Release Lever Pressure Lever and Wheel Assembly 27 Adjusting Flash Synchronization Contacts eccceeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeees 29 Wiring Connections and Schematic cccceeeeeeeeeeeeeeeeeeeenneeeeeeeeeeestneeeeeeeees 30 Camera Troubleshooting Guide ccccccceeeeeeeeeeeeeeeeeeeeeeaeeeeeeeeeessnnaeeeeeeeees 31 Figure 1 1 1 2 2 1 2 2 2 3 2 4 2 5 2 6 3 1 3 2 3 3 3 4 3 52. Wheel Spring coupled to Pressure Lever Figure 2 4 Shutter blade unlatching action To synchronize flash circuit firing with the instant of maximum shutter opening the Wheel driving the Shutter Blade has a cam lobe on its lower edge Figure 2 5 Normally Open Contacts Wheel Wheel Latched Contacts Closed by Shutter Release Wheel Unlatched Lower Contact Leaf B Upper Contact Leaf A Plastic Screw Figure 2 5 Wheel cam closure of X sync Contacts As the Wheel rotates under spring force to spin the Shutter Blade this cam lobe forces the upper X Contact against the lower X Contact closing this switch But because the cam lobe also momentarily closes the X Contacts again on its return travel a means must be provided to prevent a second flash firing A microswitch 10 actuated when the Shutter Button is depressed is wired in series with the X Contacts When the Shutter Button is released the Microswitch opens the circuit before the X Contacts are closed a second time by the cam lobe Also see Figures 3 19 and 3 20 in Section 3 Four Frame Exposure Each release of the Shutter on a Model 485B Studio Express Camera allows light from all uncapped lenses to reach the film If all four lenses have their caps removed one exposure produces four identical portraits on a single sheet of Viva film Alternatively removing the lens caps one at a time sequentially from each of the four lenses will allow four different por
3. Lens apertures from f 8 to f 32 may be selected using the Aperture Indicator Knob on the right side of the Camera Front Panel This knob is attached to the Click Plate which slides beneath the Guide Plate Small steel balls seated in holes in the Click Plate create detents at the five f stop positions As the Click Plate is moved it forces the Aperture Lever to turn through a small arc Pins at each end of the Lever rest in holes in each Aperture Blade and as the Lever turns the Blades slide over each other moving in opposite directions At f 8 the largest aperture the Aperture Blades are furthest apart and the four openings apertures in each Blade are exactly aligned over each other allowing maximum light to reach the film But as the Aperture Indicator Knob is moved in the direction of smaller f stops the Aperture Lever causes the Blades to increasingly overlap in turn decreasing the effective size of the four openings apertures in the Blades ef Guide Plate Click Plate Aperture Lever Aperture Blade A Aperture Blade B Shutter Assembly Figure 2 1 Aperture size determination f stop Shutter Operation and Flash Synchronization Overall Summary The Shutter operates mechanically first rotating a Light Interception Blade then a Shutter Blade Figure 2 2 The Light Interception Blade uncovers Baseplate openings in line with the lenses The Shutter Blade then exposes the film as its openings sweep past the
4. 3 6 3 7 3 8 3 9 3 10 3 11 3 12 3 13 3 14 3 15 3 16 3 17 3 18 3 19 3 20 List of Illustrations Page Camera Features and Controls sean avid eons aeves mi 4 Camera Outline Dimensions 2iicccceicissieteisttcteeesieiieletindsiaaniseceigieieudigtess 6 Aperture Size Determination fistop 7 Light Interception A and Shutter Blade B Positions 0 0 8 Rotation of Light Interception Blade 0 ececcceeeeeesseeeeeeseeeseeneeeeeees 9 shutter Blade Unlatching ACTION signant nan 10 Wheel Cam Closure of X sync Contacts cccccceeeeeeeeeeeeeeeeeeeeeeeees 10 Optical Path Four Frame Exposure ccccceceeeeeeeneeeeeeeeeeeeeeeneeeeeees 11 Removing Lens Tape Measure Aperture and Shutter 13 Removing Camera Back ist rings 14 Removing Backplate and Handstrap ccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeees 14 Removing Viewfinder Object Frame cccceeeeeeeeeeceeeeeeeeeeeeeeeeeeeees 16 Removing Viewfinder Cover and Lens 17 Flash Hot Shoe Disassembly ccccceeceeeceeeeeeeeeeeeeeneeeeeeeeeeeeeeeenneeeees 18 Shutter Release Button Disassembly 19 Accessing Aperture Mechanism ccccessseeecceeeeeeeeseeeeeeeeeeeneenees 20 Accessing Aperture Blad6s nt en nn 20 Aperture Mechanism Blade Actuating Parts 22 Removing Aperture and Shu
5. Polaroid Repair Manual Miniportrait 485B Studio ExpressCamera September 1996 Americas Business Center Technical Services 201 Burlington Road Bedford MA 01730 TEL 1 781 386 5309 FAX 1 781 386 5988 Table of Contents Page Section 1 General Description nn 4 Camera Capabilities and Applications 0 ccceeeeeeeeeeeeeneeeeeeeeeeeeeeeeeeeeeeeeeees 4 Camera Features Controls and Parts 4 Optional Accessories iroi oiiire cet cape te ese aaa aada dios aeaa Eae 5 Specifications and Dimensions 5 Section 2 Operation as nisisioesinevescensnesctencwcssseastoudwaweuensuavannceewserdaneeeuauentuonsndeavanss 7 Aperture Control and Selection ccccccccceeeeeeesecceeeeeeeeeeeeeeneeeeeeeeeeeseeeneeeeees 7 Shutter Operation and Flash Synchronization cccceeeeeseeeeeeeeeeeeeeeseeeeeeees 8 Overal S mmani aarne are aai a Ea a AE EE EE eee Eaa aaar D naei iat 8 Detailed Operation asia ententes malt pare deh Meenas 9 Four Frame Exposure sienne 11 Section 3 Disassembly and Reassembly s ssannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnna 12 Required Tools and Materials 12 Removing and Replacing of Components ccccceeeeeeeeeeeeeeeeeeeeeeenenneeeees 12 Removing Lenses Tape Measure Shutter and Aperture Assemblies 12 Replacing Lenses Tape Measure Shutter and Aperture Assemblies
6. X Contact Mount gt X Contact Leaf A 2 X Contact Leaf B Plastic Screw Collar Figure 3 15 Synchro X switch 26 3 Microswitch e Unsolder black and blue leads remove two Switch mounting screws and washers If necessary remove Switch Plate by removing its two mounting screws e Re assemble in reverse order If Switch Plate has been disturbed temporarily remount it with rough side up then mount Switch on Plate and resolder wire leads Check that Microswitch closes before Synchro Switch closes opens before Synchro Switch is tripped by return travel of Wheel assembly when Shutter Button is released When satisfied with position of Microswitch Loctite the mounting screws Microswitch Washers Screws T g o Switch Plate Figure 3 16 Microswitch 4 Shutter Drive Release Lever Pressure Lever and Wheel Assembly e First remove the Wheel Spring by removing the E Ring Screw and Spacer from its ends e Next remove the Release Lever by removing the E Ring from its pivot post e Now remove the Pressure Lever and Release Lever Spring below the Release Lever by removing the E ring from the Lever pivot pin Use care in releasing tension of Spring e Unhook the Spring from the Left and Right Hooks the E Rings securing the Hooks and lift off both Hooks 27 e Finally Remove the Wheel sub assembly by removing the E Ring and teflon washer Poly Slider on its pivot pin e Reassemble in
7. Baseplate openings Releasing the Shutter Button returns both blades to their starting positions Release Lever Shutter Light pade Baseplate Intreception Baseplate Rotates second to expose film Rotates first out of image path Lenses Figure 2 2 Light interception blade A and shutter blade B positions Detailed Operations Pressing the Shutter Button pivots the Release Lever and Pressure Lever rotating the Light Interception Blade Figure 2 3 Although the Light Interception Blade ears no longer block the Baseplate openings no exposure occurs because the Shutter Blade remains latched Figure 3 12 in Section 3 shows the left and Right Hooks engaging the Shutter Blade driving Wheel resulting in this latching action From Shutter Release Lever Button Pressure Lever Light Interception Blade A Lighting Intercepting Ear Wheel Sub Assembly Figure 2 3 Rotation of light interception blade Pressing the Shutter Button further causes the Pressure Lever to unlatch a Wheel coupled to the Shutter Blade Figure 2 4 as well as Figure 3 20 amp 21 in Section 3 The Wheel under the tension of a compressed spring now rotates rapidly and spins the Shutter Blade past the baseplate openings exposing the film When the Shutter Button is released a spring pulls the Levers and Blades back to their original positions and relatches the Shutter Blade Release Lever Pressure Lever Shutter Blade
8. Figure 3 13 Caution Before removing the Shutter Blades note their order and orientation to assure correct placement when reinstalling Figure 3 13 shows their position when the Shutter Board is removed Note To re assemble perform steps 1 through 4 in reverse order Position Shutter Blades as shown in Figure 3 13 The pin on Wheel sub assembly must engage with the slot W on Blade B The pin on the Pressure Lever must engage with slot P on Blade A Slot W for Wheel Pin Slot P for Pressure Lever Pin Blade B Blade A Figure 3 13 Shutter blade positions 25 Shutter Mechanism Sub Assemblies Figures 3 14 through 3 17 1 Release Slide Assembly e Remove screws bushings teflon washers release slide and second set of teflon washers e Re assembly use Loctite under screw heads Release Slide Washers j Le Bushings Fe we ae Screws lt 5 Figure 3 14 Release slide assembly 2 Synchro X Switch e Unsolder lead from upper X contact leaf A remove plastic screw collar X contact leaf A X contact mount and X contact leaf B e Re assemble in reverse order Do not strip threads of plastic screw by over tightening Be sure longer pin of the X contact mount seats in hole in Shutter Board Temporarily adjust contact leaves to be normally open and momentarily closed by wheel assembly when shutter is released When satisfied that leaves are correctly positioned to fire flash secure them with Loctite
9. school documents licenses job applications and inexpensive gift memento color portraits Camera Features Controls and Parts The 485B Studio Express has a fixed speed self cocking shutter and can be used with or without the optional accessory Model 485 Flash Unit A separate Service Manual is available for the 485 Flash Unit Figure 1 shows the camera s features and controls Viewfinder Flash Hot Shoe Shutter Button Hand Grip Film Processing Timer On Back Aperture Selector Distance Tape X Sync Connector Tripod Socket Figure 1 1 Camera features and controls Optional Accessories e Model 485 Flash Unit with two switch selectable light output levels for ISO 80 160 and ISO 3000 films PID 614528 e Flash Adaptors for 120V PID 614737 and 220V PID 614827 e Supplementary Lenses M78V for photography at 177 cm subject image size will be somewhat smaller than at 122 cm PID 614736 Specifications and Dimensions Figure 1 2 Film Types Viva positive color prints ISP 160 60 sec development Viva positive B amp W coaterless prints ISO 3000 30 sec development Prints Per Pack Print Size Eight 8 3 x 8 6 cm 3 1 4 x 3 3 8 Portrait Size 3 6 x 3 43 cm each of four with Standard Lenses 1 4 x 1 35 each Camera Size 178cm W x 171 cm H x 152 cm D 7 W x 6 75 H x 6 D Camera Weight 1 1 kg 2 5 lbs Section 2 Operation Aperture Control and Selection Figure 2 1
10. the reverse order Note the following Place the center coil of the Release Lever Spring over the Pressure center post plain end to the left resting against the underside of the Release Lever pivot post loop end to the right hooked over the Pressure Lever When replacing the Release Lever be sure the pin on its underside engages the elongated slot in the Pressure Lever Poly Slider Washer Left Hook Release Lever Spring Re DE j a E ring E rings T Pressure Lever Wheel Spring Right Hook Release Lever Figure 3 17 Shutter drive release lever pressure lever and wheel assembly 28 Adjusting Flash Synchronization Contacts Synchro X Switch Contacts A and B should be normally open when no shutter action occurs and close momentarily when the Shutter is operated This can be checked by placing your index finger on the Wheel pin to prevent it from rotating as the Shutter Release Button is slowly depressed Once the Shutter mechanism is unlatched allow the Wheel to rotate slowly and observe its cam action on the upper contact leaf of the Switch The Wheel should deflect the upper contact leaf just enough to close and then open it If this normally open close open action does not occur loosen the plastic screw slightly at the center of the Switch and adjust the contacts appropriately In the normally open position the gap between contacts should be 0 5 mm Retighten the screw and when Switch ope
11. all amount of Loctite or equivalent under the heads of the two Counter Plate screws A and the loop ends of the Spring Release Button Release Lever Tabs Subassy Figure 3 7 Shutter release button disassembly 19 Aperture Mechanism Aperture Blades Figures 3 8 and 3 9 1 Remove the Portrait Lenses and Decoration Plate Refer to Removing Lenses Tape Measure Shutter and Aperture Assemblies steps 1 and 2 in this Section 2 Remove the Lens Board by removing four mounting screws A Figure 3 8 3 Remove the Selector Board by removing four mounting screws B 4 Remove the Aperture Indicator Knob by removing two screws C Figure 3 9 5 Disconnect the Aperture Spring from the Blades unhook loops by stretching Spring 6 Remove the Aperture Plate sub assembly by removing four screws D 7 Aperture Blades A and B are now accessible Caution Before removing blades note their orientation and order to assure correct reassembly Aperture TS Indicator Aperture Spring Aperture VS Sub Assy Selector Board Aperture Lens Board Figure 3 8 Accessing Aperture Mechanism Figure 3 9 Accessing A 20 Guide Plate Click Plate or Aperture Lever Figure 3 10 1 Remove the Lenses Decoration Plate Lens Board Selector Board and Aperture Indicator Knob See steps 1 4 in the preceding Aperture Blade procedure Remove the Guide Plate by removing its four mounting screws A Caution Remove carefully to prev
12. anism broken Shutter speed low film is See Causes above overexposed e Wheel Spring broken Aperture No incorrect film incorrectly exposed e Aperture Control Knob does not move e Blades are dirty e Blades incorrectly matched to number e Wire broken or disconnected Flash does not fire Terminal and hot shoe not connected e X Contact parts broken misadjusted Flash fires twice Microswitch not opening before X contacts close 31 Solution e Check mechanism for jams e Spring loose broken e Wheel does not unlatch e Pressure Lever jammed Shutter Blades dirty See Solutions above Replace Wheel Spring Check mechanism for jam Check and clean Blades Check and readjust blade position e Check continuity e Check soldered connections e Check Body Connector e Check gap and readjust Check Microswitch reposition or replace
13. ent loss of steel balls Remove steel balls and Click Plate Remove Aperture Spring carefully pull loops out of notched Blade tabs by pulling in direction of stretching the Spring To remove the Aperture Lever and its copper bearing poly slider remove the E ring securing it to its pivot Note To re assemble perform steps 1 through 5 in reverse order Use Loctite to secure Guide Plate mounting screws Use silicon grease to lubricate longitudinal slot inGuide Plate 21 Guide Plate Steel Balls Aperture Lever Sub Assy Aperture Spring Poly Slider Bearing Aperture Plate Sub Assy Aperture Blades Figure 3 10 Aperture mechanism blade actuating parts 22 Aperture and Shutter Mechanisms from the Front Panel 1 Remove the Front Panel containing the Aperture and Shutter Mechanisms from the Camera Body See steps in preceding Removing and Replacing Lenses Tape Measure Shutter and Aperture Assemblies procedure 2 Remove the Lens Board by removing four screws A Figure 3 11 3 Remove the Selector Board by removing four screws B 4 On the Shutter mechanism side unsolder the two blue wires from the center terminal of X Sync Socket Figure 3 19 Remove hex nut and lug from Connector black wires can be left connected to lug 5 Remove the Aperture Indicator Knob by removing two mounting screws C 6 Remove the Aperture and Shutter Mechanisms from the Front Panel by removing the four screws D fr
14. mera Back to the Backplate Holder Frame Camera Back Back Plate Figure 3 2 Removing camera back 2 To remove the Back Plate Figure 3 3 remove the four screws A and two screws B securing it to the Body Note For reassembly note the locations of larger screws A corners and smaller screws B center Also don t lose Spring C at base of Back Plate 3 To remove the Hand Strap remove Pins D from the Strap loops Spring C Figure 3 3 Removing backplate and hand strap Replacing Camera Back Backplate Holder Frame and Hand Strap Note To reassemble or replace parts and sub assemblies do the Disassembly or Removal steps in reverse order unless noted otherwise Disassembling Reassembling of Sub Assemblies Viewfinder and Hot Shoe Figures 3 4 through 3 6 Notes Camera Back and Backplate must first be removed Refer to the Removing Replacing procedure in this Section e If you expect to service optical elements wear lintless gloves to keep fingerprints off lenses 1 To release the Eyecup pull out its edges from the mounting channels on the Viewfinder body On reassembly note that the narrower width of the Eyecup is at the top 2 To remove the Object Frame Figure 3 4 first note the locking tab at the bottom of the Frame To release this tab and the Frame from the Camera Body tilt the body face down and look inside at the area at the base of the metal post The Object Frame locking tab can jus
15. om the Shutter Mechanisms side Note To re assemble perform steps 1 through 6 in reverse order Use Loctite when re installing screws D Screws Front Panel Screws Selector Board Lens Board Figure 3 11 Removing aperture and shutter mechanism 23 Shutter Mechanism Note Before performing any of the following steps first remove from the Camera Body theFront Panel which contains the Shutter and Aperture Mechanisms See steps 1 7 inpreceding Removing and Replacing Lenses Tape Measure Shutter and Aperture Assemblies procedure Next remove the Lens Board and Selector Board from the Aperture Mechanism side of the Front Panel See step 2 and 3 in preceding Aperture and Shutter Mechanisms from the Front Panel procedure and Figure 3 11 Shutter Blades Figures 3 12 and 3 13 1 Remove the two pieces of tape securing the wires to the Shutter Board Then open the Cable Clamp and free the wires 2 Unsolder the blue wires from the center terminal of the X Sync Socket Remove the hex nut and lug from the X Sync Socket 3 From the Aperture mechanism side remove the four screws A securing the Shutter Assembly to the Shutter Plate Figure 3 12 Shutter Board Sub Assy Cable Clamp Blue Wires Figure 3 12 Shutter board sub assembly 24 4 Carefully lift off the Shutter Board Sub assembly using care not to disturb the position of the two Shutter Blades A and B beneath the Sub Assembly
16. ration is correct use a small amount of Loctite around the screw head to secure it Caution Do not overtighten screw and strip threads If wire leads have been removed resolder them after the Switch is mounted on the frame Position Switch wiring as shown in Figure 3 18 and hold it in place with two pieces of black tape 10 mm wide x 20 mm long positioned 4 5 mm from the holes in the Shutter Board Assembly Normally Open Contacts Contacts Closed by Shutter Release Wheel Latched Wheel Unlatched c 3e 05mm Lower Contact Leaf B Upper Contact Leaf A Plastic Screw Figure 3 18 Synchro X switch contact adjustment 29 Wiring Connections and Schematic Interconnection of the Body Connector Synchro X Switch Microswitch and X Sync Connector and wire colors are shown in Figure 3 19 Figure 3 20 is a schematic representation depicting the function of the Microswitch to prevent flash firing a second time as the Shutter blades close Body Connector ex Microswitch X Sync Connector Figure 3 19 Flash circuit wiring diagram Closes before X Sync Contacts close then opens before Wheel closes X sync Contacts a second time on return travel Hot Shoe X Synchro Contacts I Close after Microswitchjcloses Microswitch Body Connector Figure 3 20 Flash circuit schematic 30 Troubleshooting Guide Problem Possible Causes Shutter does not release Shutter Button does not move e Mech
17. s electrical connections need servicing disassemble the Hot Shoe as follows Figure 3 6 e Insert the tip of a very thin blade under the Plate Spring at the point shown by the arrow and lift slightly to release the front lip of the Plate Spring Now slide the Plate Spring outto the rear of the Hot Shoe e Remove the three screws C securing the Hot Shoe clip and base to the Viewfinder Cover Screws are attached to the Nut Plate below the Cover e Replacement of the wiring to the Hot Shoe can now be done or the soldered connections checked and repaired if necessary 17 Lift here to release lip Plate Spring Hot Shoe Clip Hot Shoe Base Viewfinder Cover Figure 3 6 Flash hot shoe disassembly Shutter Release Button Figure 3 7 Note Camera Back and Backplate must first be removed Refer to the Removing Replacing procedure in this Section 1 Unhook the lower end of the Spring from the Release Lever Sub assembly tab 2 Remove two screws A securing Counter Plat lift off the Counter Plate with the Spring attached 3 Lift out the Release Lever Subassembly slide downward and lift lower end then lift it out of Body It is not necessary to remove the two Spacers unless replacing them If necessary carefully pull them off the molded studs they are pressed onto 4 Remove the screw B securing the Release Button to the Release Lever Note To re assemble perform steps 1 through 4 in reverse order Use a sm
18. t be seen protruding into the Camera Body With a small flat blade tool between the end of the tab and the metal post gently release this locking tab and push it up through the Camera Body 3 Now the Object Frame can be lifted straight up and off the Viewfinder housing Note the second tab at the top of the object Frame which fits into the slot at the front of the Viewfinder Cover 15 Viewfinder Cover Release tab here with thin blade Locking Tab Slot Ss Object Frame SS Locking Tab Metal Post TT Ke Camera Body Lip on Tab Figure 3 4 Removing viewfinder object frame Now free the Viewfinder Cover by removing two screws A and the nut plate at rear then the two screws B at the front of the Cover Figure 3 5 Gently pull up on the Cover as far as the wiring to the Hot Shoe will allow Remove the black tape securing the wires inside the Viewfinder as well as the tape at three locations inside the Camera Body Figure 3 5 Push the connector through the round hole in the Body and remove the Viewfinder Cover Hot Shoe and connected wiring as a unit The Eyepiece Lens Bright Frame and Object Lenses 1 and 2 are now accessible for servicing or replacement if necessary wear lint free gloves Eyecup Viewfinder Cover Eyepiece Lens Object Frame D Bright Frame i y Object Lens 2 Object Lens 1 Nut Plate Figure 3 5 Removing Viewfinder Cover and Lenses 8 If the Hot Shoe or it
19. torque is insufficient Replace the Lens Caps on the Lenses to protect them against direct and scratches Lift out the Decoration Plate Peel off the cemented on Bottom Rubber from the Bottom Plate and remove the three screws holding the Bottom Plate to the Camera Body Remove Tape Measure from double sided tape if necessary 5 Now remove four screws holding Shutter and Aperture Assemblies to Camera Body Access to these four screws is through holes a in the Lens Board Figure 3 1 6 Partially lift Front Panel holding the Shutter and Aperture Assemblies off Camera Body untiltwo part connector from Hot Shoe wires is accessible on the right side 7 Unplug the connectors lifting the molded tab slightly on the larger connector to release them 8 Put the Shutter and Aperture Assemblies housed in the Front Panel aside with the four mounting screws Front Panel Lens Board Decoration Plate Lens Cap Connector Tape Measure Bottom Plate Bottom Rubber Figure 3 1 Removing lenses tape measure aperture and shutter assemblies Replacing Lenses Tape Measure Shutter and Aperture Assemblies Note To reassemble or replace parts and sub assemblies do the Disassembly or Removal steps in reverse order unless noted otherwise Clean Lenses first 13 Removing Camera Back Backplate Holder Frame and Hand Strap Figure 3 2 1 Unlatch and open the Camera Back Remove the eight screws mounting the Ca
20. traits to be made on a single sheet of film Figure 2 6 diagrams the image optical path through the Model 485B From the uncapped lens es the image passes through openings in the Selector Board Aperture Assembly and Shutter Board When the Shutter is released and the blades open the image continues through the Shutter Plate openings the Hood square openings in the Camera Body and finally onto the viva film For more details of the positions of Shutter Blades A and B when the Shutter is released see the preceding paragraph describing Shutter operation Shutter Plate Padi Shutter Blades A Shutter Board VA WS i D P 0 eQ Aperture Assembly SN St X Selector Board Figure 2 6 Optical path four frame exposure 11 Section 3 Disassembly and Reassembly Required Tools and Materials Phillips head driver bit U51B magnetized Wooden chuck U51 to hold driver bit U51B Thin blade stiletto style tool Flat blade jeweler s screwdrivers Small tweezers or forceps Curved jaw pliers with jaws taped for removing Lenses Low wattage pencil tip soldering iron Loctite for securing mounting screws and springs Black fabric adhesive tape 10mm wide for securing wires Silicon grease for lubricating Aperture mechanism Removing and Replacing Components Removing Lenses Tape Measure Shutter and Aperture Assemblies Figure 3 1 1 Unscrew the four portrait Lenses use padded jaw pliers if finger
21. tter Mechanism 23 Shutter Board Sub Assembly 24 Shutter Blade POSIIONS Essen AR dan 25 Release Slide Assembly sisi nine ire 26 Synchro X SWISS he ea aS eae su Oh 26 IWHGROSWIRCI A cnt en RS a aaa aa aan EEEE a RET 27 Shutter Drive Release Lever Pressure Lever and Wheel Assembly 28 Synchro X Switch Contact Adjustment cceeeeeeeeeeeeeeeetteeeeeeeeeeees 29 Flash Circuit Wiring Diagram 222 ae nt tee 30 Flash Circuit Schematic es fantasmes date 30 Section I General Description Camera Capabilities and Applications The Polaroid Model 485B Studio Express is a hand held or tripod mounted camera which produces four portraits in color or black and white on a single sheet of Viva film The four portraits can be all alike or all four can be different by selectively covering three of the lenses with lens caps each time a new portrait is taken or the four portraits on a film sheet can be a combination of the above Designed for European Far Eastern Australian and Latin American markets the 485B is intended for indoor use by professional photographers photo shops government agencies and entrepreneurial photographers The Camera is not recommended for use outdoors Although low priced the Model 485B Studio Express is a highly reliable quality camera specifically designed for high volume applications Typically these include ID photos government and
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