Polaroid Miniportrait 485B, Repair Manual

Page 1: ...Repair Manual Americas Business Center Technical Services 201 Burlington Road Bedford MA 01730 TEL 1 781 386 5309 FAX 1 781 386 5988 Miniportrait 485B Studio ExpressCamera September 1996...

Page 2: ...es 12 Replacing Lenses Tape Measure Shutter and Aperture Assemblies 13 Removing Camera Back Backplate and Hand Strap 14 Replacing Camera Back Backplate and Hand Strap 15 Disassembly Reassembly of Sub...

Page 3: ...te and Handstrap 14 3 4 Removing Viewfinder Object Frame 16 3 5 Removing Viewfinder Cover and Lens 17 3 6 Flash Hot Shoe Disassembly 18 3 7 Shutter Release Button Disassembly 19 3 8 Accessing Aperture...

Page 4: ...es 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...

Page 5: ...e 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 W coaterless prints...

Page 6: ...6 Figure 1 2 Camera outline dimensions...

Page 7: ...ver 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 th...

Page 8: ...openings in line with the lenses The Shutter Blade then exposes the film as its openings sweep past the Baseplate openings Releasing the Shutter Button returns both blades to their starting positions...

Page 9: ...e 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 21 in Section...

Page 10: ...er 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 mus...

Page 11: ...t a time sequentially from each of the four lenses will allow four different portraits to be made on a single sheet of film Figure 2 6 diagrams the image optical path through the Model 485B From the u...

Page 12: ...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...

Page 13: ...g 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 Figure 3 1 Removing lenses tap...

Page 14: ...amera 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...

Page 15: ...g 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 T...

Page 16: ...wires inside the Viewfinder as well as the tape at three locations inside the Camera Body Figure 3 5 6 Push the connector through the round hole in the Body and remove the Viewfinder Cover Hot Shoe a...

Page 17: ...e the front lip of the Plate Spring Now slide the Plate Spring out to the rear of the Hot Shoe Remove the three screws C securing the Hot Shoe clip and base to the Viewfinder Cover Screws are attached...

Page 18: ...18 Figure 3 6 Flash hot shoe disassembly Lift here to release lip Lip C C Plate Spring Hot Shoe Clip Hot Shoe Base Viewfinder Cover Nut Plate Tape...

Page 19: ...rd 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...

Page 20: ...s 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...

Page 21: ...arefully to prevent loss of steel balls 3 Remove steel balls and Click Plate 4 Remove Aperture Spring carefully pull loops out of notched Blade tabs by pulling in direction of stretching the Spring 5...

Page 22: ...22 Figure 3 10 Aperture mechanism blade actuating parts Steel Balls Guide Plate Aperture Lever Sub Assy Aperture Spring Click Plates Poly Slider Bearing Aperture Plate Sub Assy Aperture Blades E ring...

Page 23: ...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 In...

Page 24: ...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 Shut...

Page 25: ...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 i...

Page 26: ...af A X contact mount and X contact leaf B 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...

Page 27: ...n Shutter Button is released When satisfied with position of Microswitch Loctite the mounting screws Figure 3 16 Microswitch 4 Shutter Drive Release Lever Pressure Lever and Wheel Assembly First remov...

Page 28: ...nd 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 enga...

Page 29: ...astic 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 opera...

Page 30: ...the Microswitch to prevent flash firing a second time as the Shutter blades close Figure 3 19 Flash circuit wiring diagram Figure 3 20 Flash circuit schematic Body Connector X Synchro Contacts Microsw...

Page 31: ...Wheel Spring Aperture No incorrect Aperture Control Knob Check mechanism for jam film incorrectly exposed does not move Blades are dirty Check and clean Blades Blades incorrectly Check and readjust bl...