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3. Testing and Adjustments

General

The following paragraphs list and describes the required equipment necessary to test and make adjustments
to the Joshua camera.

Required Equipment

•

Joshua Test Cover (Part Number 13552)

•

Joshua Horn Assembly (Part Number 13532)

•

Alignment Gauge (Part Number 13551)

•

Base Riser (Part Number 13559)

•

Star Tester (Part Number 12650-2)

Description of Equipment

Joshua Test Cover

The Joshua Test Cover (Figure 3-1) contains a test switch that is used to switch from the Strobe (STB) to
the Ambient (AMB) test mode. It also inhibits the strobe and the IR input to the Joshua camera exposure
system while taking Ambient measurements.

Important:

The Joshua Test Cover must be used for the Ambient and Strobe exposure

test.

Figure 3-1. Joshua Test Cover

Joshua Horn Assembly

The Joshua Horn Assembly (Figure 3-2), as with previous horn assemblies, allows exposure tests to be
performed with the Star Tester. However, this horn assembly has many differences in terms of its

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Содержание Joshua Captiva

Страница 1: ...Repair Manual Americas Business Center Technical Services 201 Burlington Road Bedford MA 01730 TEL 1 781 386 5309 FAX 1 781 386 5988 Joshua Vision JoyCam Captiva April 1993...

Страница 2: ...the JoshuaCamera 1 13 Erecting Viewfinder and Camera Optical System 1 13 Drive and Switching System 1 16 Shutter System 1 18 Film Frame Transport and Spreading 1 21 SpecificationSummary 1 23 Camera Co...

Страница 3: ...ssing Cycle 2 24 Safety Clutch on Feed Roll 2 24 SystemSchematic 2 24 3 Testing and Adjustments 3 1 General 3 3 RequiredEquipment 3 3 Description of Equipment 3 3 Testing 3 5 Ambient Exposure Test 3 5...

Страница 4: ...ip 4 11 Disassembly 4 11 Reassembly 4 11 Bottom Door Assembly 4 12 Removal 4 12 Disassembly 4 12 Reassembly 4 15 Top Cover 4 16 Removal 4 16 Reassembly 4 17 Shutter Assembly 4 18 Removal 4 18 Disassem...

Страница 5: ...embly 4 35 5 Troubleshooting 5 3 Introduction 5 3 Functional Test of a Joshua Camera 5 5 Tools and Parts Needed for Troubleshooting 5 7 Common Camera Failure Modes and Corrective Procedures 5 8 Isolat...

Страница 6: ...This page intentionally blank...

Страница 7: ...1 1 1 Description...

Страница 8: ...Features 1 8 Using the Camera 1 10 Loading Film 1 10 ErectingCamera 1 10 Taking Picture 1 11 Brightness Adjustment and Self Timer 1 12 Major Functional Sub Systems of the Joshua Camera 1 13 Erecting V...

Страница 9: ...Picture format can be either vertical or horizontal The Joshua camera has an integral fully automatic electronic flash through the lens reflex viewing and a unique microprocessor controlled exposure...

Страница 10: ...lers into a semi circular chute chamber makes a U turn is fed into the processing rollers spread system and picked a second time into a storage chamber Figure 1 2 The process is repeated for all subse...

Страница 11: ...nd weighs 760 gm 27 oz with a full film pack The Camera iserected by holding the camera as shown and depressing the Release Button Latch on the Strobe Towerwithyourrightthumb Figure 1 3 ErectingtheCam...

Страница 12: ...utomatically transports the darkslide into the storage chamber unless this chamber is full If it is a warning LED will light and an audio signal will sound and darkslide will occur after the picture s...

Страница 13: ...secondarily to determine whether the subject is near or far from the Camera Joshua employs a strobe wink system This involves firing approximately one tenth of the strobe energy prior to exposure and...

Страница 14: ...uench system Picture counter counts down shows exposures remaining Brightness Override switch adjusts exposure 3 4 stop automatically resets when camera is folded Built in Self Timer blinking LED and...

Страница 15: ...1 9 Figure 1 6 Joshua System Features...

Страница 16: ...t in the window counter will advance to 10 Figure 1 7 Loading the Film Erecting Camera Hold Camera with left hand grasping rubber grip Figure 1 8 Press button on top of Strobe tower with right thumb a...

Страница 17: ...button lightly to charge flash The picture advances automatically into the storage compartment over the previous pictures Figure 1 9 Framing and Formatting the Picture Pictures can be removed immediat...

Страница 18: ...rected Switch will reset to normal when Camera is collapsed To operate Self Timer set Camera on tripod frame picture and slide switch toward clock symbol it will spring back Camera will beep and red L...

Страница 19: ...plified form the linkage which erects the Camera and accurately positions the optical elements for viewing the scene and exposing the picture When the release button latch on the top of the strobe tow...

Страница 20: ...is directed onto a fixed viewing mirror at 45 degrees then to a textured fresnel focusing screen back to the viewing mirror and then to a concave mirror which directs the image of the object through a...

Страница 21: ...s moved into place within the viewfinder window to prevent stray light from reachingthefilm If the subject is 2 7 m 9 ft or more from the Camera determined automatically from strobe wink reflectance d...

Страница 22: ...Film frame transport via two pick systems and two sets of rollers One pick pulls the frame into the feed rolls which drive it through the chute and a second pick moves the frame into the storage chamb...

Страница 23: ...1 17 Figure 1 16 Principal Parts of the Joshua Drive System...

Страница 24: ...l slots near the bottom of theBlades aphotodiodeand photo transistor Figure 1 18 on thePCboard and circuits in the Exposure IC Because the Joshua is a single lens reflex SLR camera in which the image...

Страница 25: ...rtures in the shutter blades Each of these exposure components ambient and IR is individually integrated electronically summed by its own integrator The Two Zone Focus System uses under microprocessor...

Страница 26: ...field The rack and pinion inertia link and inertia gear respectively of the inertia system act as an effective multiplier of inertial forces to allow the blades to begin opening slowly The blades are...

Страница 27: ...e it through the chute and into the Spread System Rolls Figure 1 20 Just before the frame enters the Spread Rolls it passes over opposing slightly projecting molded surfaces on the bottom of the Film...

Страница 28: ...1 22 Figure 1 20 Film Frame Transport Spreading and Storage Figure 1 21 Features for Even Reagent Distribution in Pod...

Страница 29: ...uench typical recharge time less than 5 3 sec Exposure System Strobe always fill flash Wink Aperture Priority flash fire aperture based on IR reflectance and value selected from lookup table by microp...

Страница 30: ...principally the removable parts panels and covers of the Joshua Camera Please note that this illustration is for general information only and NOT intended as a disassembly guide or representation of m...

Страница 31: ...1 25 Figure 1 22 Joshua Components Covers and Panels...

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Страница 33: ...2 1 2 Theory of Operation...

Страница 34: ...d 2 8 Maintaining Power for Processing after Camera is Folded 2 9 Darkslide Transport and Counter Wheel Indexing 2 11 Exposing the Picture 2 12 Blocking the Viewfinder 2 13 Releasing the Taking Mirror...

Страница 35: ...the camera position Open and closed will be used in reference to camera doors Loading Film Pack into Erected or FoldedCamera Inserting a new film pack into the camera and closing and latching the fil...

Страница 36: ...2 4 Figure 2 1 Pictorial ChartShowing JoshuaCamera Sequence of Operation...

Страница 37: ...inserting a film pack and latching the door closed powering the camera is accomplished by the Erect Power Switch shown in Figure 2 3 one of two wireform switches in the Joshua The other switch control...

Страница 38: ...may be loaded when the camera is folded and because darkslide should occur immediately darkslide power is needed in a normally unpowered camera In the Joshua this requirement is met by the action of a...

Страница 39: ...n its return its lug pushes the Dark Slide Link to the right Figure 2 7 out of the way allowing the Power Actuator assembly to pivot CCW back down again This allows VER to break contact with B turning...

Страница 40: ...he folded position The important effect on the power circuit of latching the Door as contrasted to simply closing the Door is discussed below Figure 2 8 Effect of Door Latch on B Wire of Power Switch...

Страница 41: ...r Latch cam allows the Door Latch Sensor to pivot upward CW driving the B wire upward and out of contact with VER Maintaining Power for Processing after Camera is Folded Folding the camera from an ere...

Страница 42: ...en if the camera were now folded pivoting the Erect Sensor down away from VER VER is held up in contact with B by the tab on the Power Actuator Thus power is maintained until the processing cycle is c...

Страница 43: ...e to recharge the fifth result of loading the film pack and through the power IC run the motor because the DKEC switch is closed The motor runs rotating the Timing Gear see Figure 2 12 which cams the...

Страница 44: ...ke place during exposure how the viewfinder blind and the taking mirror are moved For an overall list of the steps in the exposure and processing sequence of operations see the Sequence of Operations...

Страница 45: ...ock Latch Rotation by Clutch Gear Spring Leg Motion of the Recock Latch is transmitted to the Viewfinder Blind through the Viewfinder Blind Link and the Viewfinder Overtravel Spring Figure 2 16 When t...

Страница 46: ...e Recock Latch a few degrees counterclockwise This action frees the Recock Link to pivot upward from the force of the stretched Recock Link Spring see Figure 2 17 As the Recock Link swings upward a sh...

Страница 47: ...aperture selected from the lookup table Solenoid 1 released blade position carefully monitored and the strobe is fired all under microprocessor control To end the exposure Solenoid 1 is again energiz...

Страница 48: ...the underside of the Timing Gear drives the Pick Carrier forward to the left to its full stroke and holds it there Figure 2 20 A spring arm on the Pick Carrier indexes the Counter Wheel Figure 2 21 F...

Страница 49: ...es the Override Slider in the Door The Slider actuates the Film Shade through a reversing linkage moving the Film Shade into position to cover approximately the first 1 9 cm 75 of unexposed film Figur...

Страница 50: ...e 2 23 Pick Strap on Pick Carrier Pulls Frame into Feed Rolls The Pick Strap in the Joshua System which pushes the film frame into engagement with the Feed Rolls is specifically designed to provide a...

Страница 51: ...rror Carrier down through the Midlink and Mirror Hold Down Spring This spring coupling is a safety proJoshua which allows the Recock Link to continue to move even if something impedes the motion of th...

Страница 52: ...up again closing the DKEC switch The sequence of DKEC switch actuations by the Timing Gear cam can be seen in Figure 2 26 At the beginning of a cycle the Timing Gear cams the Door Stop Link to close...

Страница 53: ...mbly under its own spring load follows the Pick Carrier This causes the Chamber Pick first to advance and then retract inset Figure 2 27 pulling the frame a short distance clear of the Spread Rolls an...

Страница 54: ...operation until the chamber is emptied The Full Chamber Switch is also used to detect film jams During each normal cycle the Full Chamber Switch is closed and remains closed until the end of the cycle...

Страница 55: ...29 End of Pack EOP Switch and Counter Wheel Cam Special Cases Darkslide when Film Loading Door is Opened and Closed When the Door is opened to remove replace film or clean the Spread Rolls the Pack Fr...

Страница 56: ...cycle clearing The Inner Door Stop Link is released when the Pick Carrier is driven forward but the DKEC Switch remains closed The Timing Gear has rotated far enough to prevent the Outer Door Stop Lin...

Страница 57: ...2 25 Figure2 31 Circuit Diagram...

Страница 58: ...This page intentionally blank...

Страница 59: ...3 1 3 Testing and Adjustments...

Страница 60: ...ments Table of Contents General 3 3 RequiredEquipment 3 3 DescriptionofEquipment 3 3 Testing 3 5 AmbientExposureTest 3 5 Strobe ExposureTest 3 8 Adjustments 3 10 AmbientExposureCalibration 3 10 Strobe...

Страница 61: ...hua Test Cover The Joshua Test Cover Figure 3 1 contains a test switch that is used to switch from the Strobe STB to the Ambient AMB test mode It also inhibits the strobe and the IR input to the Joshu...

Страница 62: ...state During theStrobe modeof operation the phototransistor detects boththe winkand strobepulse The Green and Red LED sturn on offduring thisperiod this is part ofthe gatingfunction ofthe hornassembly...

Страница 63: ...ripthe cameradoor switchinto itsdown position 3 Usingasolder aid tool removethefrontcover fromthecamera 4 Install the Joshua Test Cover in place of the removed front cover 5 Set the Joshua Test Cover...

Страница 64: ...ewindowof the StarTester Note The VIS IR photocelland thetaking lensshould be centered on the lightsource window 10 Set switch 1 SW 1 of the Joshua Horn Assembly to its Ambient AMB position 11 Slideth...

Страница 65: ...STOP ERROR display of the Star Tester Because of the SLR system there is only one reading for every two cycles of the camera Note Ambient Specification Limits 10 0 25 STOP 4 If the STOP ERROR display...

Страница 66: ...tcover fromthecamera 4 Install the Joshua Test Cover in place of the removed front cover 5 Set the Joshua Test Cover Strobe Ambient STB AMB switch to its Strobe STB position 6 Place the camera with th...

Страница 67: ...tchtoitscenter normal position 11 Set the Star Testerselectorswitch toitsFLASH EXP position Test Procedure 1 Pressthecamera shutterbutton 2 Record readings shown on the STOP ERROR display of the Star...

Страница 68: ...against the Star Tester Figure 3 4 The tab guide on the Alignment Gauge properly centersthe camerainfrontof the light sourcewindowof the StarTester Note The VIS IR photocell and the taking lens should...

Страница 69: ...ient Calibration wheel Figure 3 6 witha dentalpick Rotate wheelclockwise CW todecreaseexposure orcounter clockwise CCW toincrease expoxure 5 Retest thecamera Ifnecessary repeatthiscalibrationprocedure...

Страница 70: ...ith respect to the Graywall The camera lens must be 4 5 feet 137 cm from the Graywall Note The front of the camera must be parallel to the Graywall and the area visible in its viewfinder must be free...

Страница 71: ...ons adjust the Strobe Exposure Calibration Wheel Figure 3 6 with a dental pick Rotate wheel clockwise CW to decrease exposure or counter clockwise CCW to increase exposure 5 Retest thecamera Ifnecessa...

Страница 72: ...This page intentionally blank...

Страница 73: ...4 1 4 Disassembly and Reassembly...

Страница 74: ...5 Disassembly 4 5 Reassembly 4 7 Front Panel 4 8 Removal 4 8 Reassembly 4 8 Left Hand Grip and Bottom Chute Cover 4 9 Removal 4 9 Reassembly 4 9 Bottom Chute Cover 4 10 Disassembly 4 10 Reassembly 4 1...

Страница 75: ...em VMC Bellows and Taking Mirror Carrier Assemblies 4 28 Disassembly 4 28 Reassembly 4 30 Main Frame Non Gear Side 4 31 Disassembly 4 31 Reassembly 4 32 Main Frame Gear Side Outer 4 33 Disassembly 4 3...

Страница 76: ...ed for the more complex sub assemblies for example the shutter and the gear trains To reassemble Vision Camera assemblies follow the disassembly procedures in reverse order SpecialToolsand Equipment N...

Страница 77: ...ntly pry up the Rear Panel to release it from the Main Body of the camera c Lift off the Rear Panel Figure 4 1 Removal of Rear Panel 2 Disassembly Figure 4 2 a Using tweezers remove the Self Timer Ret...

Страница 78: ...Rear Panel Lift off the Control Panel Decorative Plate being careful not to loose the counter Window Lens Note The Counter Window Lens will fall out as the Control Panel Decorative Plate is removed Fi...

Страница 79: ...re Flat part of the Counter Window Lens is facing the bottom of the Control Panel Decorative Plate Self Timer and Light Dark Trim tabs Figure 4 3 are positioned so that each one properly inserts into...

Страница 80: ...Main Body of the camera c Lift off the Front Panel being careful not to break its plastic locking tab Figure 4 4 Removal of Front Panel 2 Reassembly To reinstall the Front Panel follow the removal st...

Страница 81: ...of LeftHand Gripand Bottom ChuteCover 2 Reassembly To reinstall the Left Hand Grip and Bottom Chute Cover follow the removal steps in reverse order Note When re installing the Left Hand Grip and the B...

Страница 82: ...Chute Cover c Using a narrow blade flat screwdriver gently pry up the Door Latch locking tab to release it from theBottom Chute Cover Lift off the Door Latch Figure 4 6 Disassembly of Bottom Chute Co...

Страница 83: ...isassembly of Right Hand Grip 2 Reassembly To reassemble the Right Hand Grip and S1 Button follow the disassembly steps in reverse order Note Whenre installing theRightHandGrip andS1Buttonmake sure th...

Страница 84: ...n the Main Body ofthe camera Lift out the BottomDoor Assembly Figure 4 8 Removal of Bottom Door Assembly 2 Disassembly a Gently squeeze and push inward the Picture Removal Door Figure 4 9 to release i...

Страница 85: ...of Pack Frame from Bottom Door d Using tweezers remove the Storage Pick Spring Figure 4 11 from the Storage Pick Assembly Lift out the Storage Pick Spring e Using a narrow blade flat screwdriver gentl...

Страница 86: ...l Assembly from Bottom Door h Lift up and out the Film Shade from the plastic locating pin on the Actuator Link Figure 4 13 i Lift out Storage Pick Assembly NOTE In reassembly be certain the Full Cham...

Страница 87: ...in its retract position Film Shade should be over the Actuator Link Once the Storage Pick Assembly and the Film Shade are properly positioned gently insert the Spread Roll Assembly into its slots on...

Страница 88: ...ut the pins Figure 4 15 that hinge the Top Cover to the Main Body of the Camera The Top Cover springs will retract Figure 4 15 Removal of Top Cover Hinge Pins b Gently pry up the Top Cover Figure 4 16...

Страница 89: ...sembling the Top Cover Figure 4 17 make sure Top Cover Springs are inserted into the grooves on the Main Body of the camera Hinge pins are properly installed Long pin into left side Short pin into rig...

Страница 90: ...k pin to release the top portion of the Shutter Link from the Shutter Assembly Figure 4 18 Removal of Shutter Link Pin c Using a solder aid stick gently pry up the corner of the Shutter Decorative Pla...

Страница 91: ...aighten the Bellows lockingtabs with tweezers or needlenose pliers f Place the Shutter Assembly into the Shutter Support Fixture Figure 4 21 g Using a narrow blade flat screwdriver gently push in the...

Страница 92: ...e plastic Cap Connector from the Flex Figure 4 22 Figure 4 22 Removal of the Flex Connector j Using a solder aid stick gently pull out the Flex Figure 4 23 to make it easier to remove the Shutter Asse...

Страница 93: ...e Main Body of the camera Figure 4 24 Removal of Shutter Assembly l Lift out the Shutter Assembly Caution The plastic Mirror Catcher Figure 4 25 will fall out as the Shutter Assembly is removed Do not...

Страница 94: ...k Assembly Remove the Concave Mirror Figure 4 26 Removal of the Flapper Hinge d Using a square drive remove the five 5 screws that secures the Front Shutter Housing Figure 4 27 to the Base Block Assem...

Страница 95: ...ry open the locking tabs that secures the front Lens to the Lens Mounting Plate Remove the Front Lens h Using a narrow blade flat screwdriver gently release the locking tabs Figure 4 30 that secures t...

Страница 96: ...lease Button Latch k Lift out the Release Button Latch from the Base Block Assembly Figure 4 29 Removal of Ambient IR Lens Solenoid Retainer Contacts Front Lens and Solenoid 2 Figure 4 30 Removal of P...

Страница 97: ...om the Lens Mounting Plate Figure 4 32 Inertia Gear Disengage Inertia Spring Inertia Link Assembly Opening Spring WalkingBeam Figure 4 32 Removal of the Walking Beam Inertia Link and Related Component...

Страница 98: ...he PCBoard from the Lens Mounting Plate Pull PCboard straightout Figure4 34 toreleaseitfromLens Mounting Plate p Remove Bladesfrom LensMounting Plate Figure4 35 If re using the Blades use gloves to pr...

Страница 99: ...install the Shutter Assembly follow the disassembly and removal steps in reverse order Note When re installing the Far Focus Lens make sure its pin is inserted into the locating tab at the end of the...

Страница 100: ...lows Assembly Rubber Boot Figure 4 36 Release Boot Tabs b Rotate the Clutch Gear Figure 4 37 counter clockwise CCW until the Pick retracts c Rotate the Clutch Gear clockwise CW until the Mirror flys N...

Страница 101: ...ng tweezers remove the Mirror Carrier hinge pins Figure 4 39 to release the VMC Bellows Assembly and theTaking Mirror Carrier Assembly from the Main Body of the camera h Lift off VMC Bellows Assembly...

Страница 102: ...tion Align the hinges of the VMC Bellows and the Taking Mirror Carrier Assemblies to the hinge posts on the Main Body of the camera Install the hinge pins using needlenose pliers or tweezers Rotate th...

Страница 103: ...ry up the Erect Switch to release it from the Main body of the camera Lift off the Erect Switch g Remove the Erect Sensor h Using a narrow blade flat screwdriver gently pry out the Flex Plug Switch Bl...

Страница 104: ...ewheninstallingtheBattery Contacts Referto inset in Figure 4 41 Figure 4 41 Disassembly of Main Frame Non Gear Side e f ERECT SWITCH m DOOR STOP j OVER CENTER SPRING i BATTERY CONTACTS POWER ACTUATOR...

Страница 105: ...crewdriver remove the following from the Main Frame 1 Gear 4 white plastic 2 Clutch Gear 3 Idler Gear 4 5 Wire Detail Switch Assembly If necessary gently pry up the 5 Wire Detail Switch Assembly to re...

Страница 106: ...witch are properly positioned See nsert in Figure 4 42 for locationof contacts Zero 0 position of the Counter wheel must be aligned with the screw post on the Main Frame of the camera Cam of the Timin...

Страница 107: ...rom the Main Frame Gear 3 Gear 2 Gear 1 Top Feed Roll Bottom Feed Roll c Using a small Phillips screwdriver remove the two 2 screws that secures the D C Motor to the Main Frame Push out the D C Motor...

Страница 108: ...This page intentionally blank...

Страница 109: ...5 1 5 Troubleshooting...

Страница 110: ...ntents Introduction 5 3 Functional Test of a Joshua Camera 5 5 Tools and Parts Needed for Troubleshooting 5 7 Common Camera Failure Modes and Corrective Procedures 5 8 Isolating the Problem Camera Mai...

Страница 111: ...othePCBoard thepresentrecommendedprocedure is to replace theentireShutter PC BoardAssembly Limitedrepairexperiencethus farfromearly returnsalsoindicatesthatsome problems arerelated to rework piecepart...

Страница 112: ...OWER ACTUATOR TO BATTERY B S1A FI LM SPEED FULL CHAMBER EOP DKEC LOGIC SWITCH FLEX VE R GND GND S1B TR IM TR IM Figure 5 2 Flex Connections to Erect Power Wireform Switch Figure 5 3 Flex Connections t...

Страница 113: ...eshFilmPack Dark slidecycle occurs Flash does not fire Counter indexes from 0 to 10 Darkslide movesto storagechamber Erectcamera Shortmotorjogoccurs Red LED lights flash is charging then goesout Green...

Страница 114: ...hen goesout Green LED lights andstays on flashis ready Filmframeismovedintostoragechamber 5 End of Pack Test PressShutter Button Flashfires Camera cycles bladesopen close Counter indexes from 1to 0 Fi...

Страница 115: ...Square drive tool Handle P NCPS416 bitP N 13553 KnowngoodShutter PCBoard StrobeAssembly P N1A2631A Filmpacksfor Joshua Camera Polaroid 95InstantFilm Narrow flatbladescrewdriverordental pick torelease...

Страница 116: ...g SeeFigures 2 4 to2 7 Check DKECSwitch should be closed SeeFigure 2 19 CheckFlexconnection to Erect Power Switch See Figure5 2 Checkcondition of B VER and GNDwireforms inErect Power Switch See Figure...

Страница 117: ...rimaryPick is notbent dirty etc See Figure 2 23 Checkfor presence of plasticburr in chute CheckChamberPick position mustbein returned startposition SeeFigure 2 27 CheckMotorcondition Checkcondition of...

Страница 118: ...lthestoppedpicture outoftheCamera carefully If pullingthe filmisunsuccessful manually advancethe Clutch Gear inthe Mainframeto remove thefilm See page 4 28 Figure4 37 of the Assembly DisassemblySectio...

Страница 119: ...ion of Door Latch onChute See Figure4 6 Checkcondition of FullChamber Link See Figure 2 28 CheckFull Chamber Switch wire is itstuck onGear DriveCover See Figure 2 28 11 NoSelf Timer Checkcondition of...

Страница 120: ...ssemblyandRe assembly forillustrationsandmore detailedinstructions ifneeded 1 Remove theRear Panel from theCamera Figure4 1 2 Remove theTop Cover by removingthe hinge pins Figures 4 15 and 4 16 3 Remo...

Страница 121: ...nsor and the Mainframe as shown in the inset atthe right in Figure5 5 to hold the Sensor down and maintainpower tothe Camera 12 IfCamera operationwiththe new ShutterAssemblystillexhibitsthe sameproble...

Страница 122: ...5 14 5 14...

Страница 123: ...5 15 Figure 5 7 Joshua Camera Timing Diagram...

Страница 124: ...This page intentionally blank...

Страница 125: ...A 1 Appendix...

Страница 126: ...ogic Switch wireforms Camera Cycle All steps occurring in exposure and processing from darkslide to film frame transport into storage chamber Chute Semi circular cavity at end of Camera into which fil...

Страница 127: ...tect shutter blade motion from passage of light through coincident blade openings as blades slide over each other EOC End Of Cycle signalled by Timing Gear opening DKEC Switch EOP End Of Pack signalle...

Страница 128: ...and circuits Focus Zone Near or far zone occupied by subject which determines whether near front lens system only or near and far focus lenses will be used Folded Refers to Camera in collapsed positio...

Страница 129: ...ectivity values Jam Film frame misfeed and incomplete transport into storage chamber Jog Reverse Motor Brief initial CCW rotation of Motor to release Recock Latch allowing VF Blind to block VF window...

Страница 130: ...ind to close before Mirror is released also compensates for Recock Latch rotation after VF Blind cannot move further Pack Film Ten Joshua instant color print film frames with darkslide and mercury fre...

Страница 131: ...d in internal pod in integral Polaroid film Reflectance IR Infrared energy reflected by subject and measured at Camera see IR Reflectivity Recock Latch Drive System element which when latched holds Mi...

Страница 132: ...amber See Film Chamber Storage Pick See Secondary Pick Strobe Always Operation Camera operation in which strobe is fired automatically on every exposure Joshua Strobe Tower Molded enclosure containing...

Страница 133: ...ixed Mirror to Eyelens Visible Integrator Electronic summing circuit for visible ambient light measurements by Photometer Walking Beam Pivoted arm in Shutter System which couples Solenoid 1 to Blades...

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