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1. 13 After the blades close the motor is turned on The timing gear advances the pick indexes the counter and brings the S5 actuator back to its original position The shutter system is latched closed ending the low ambient NEAR sequence LESS THAN 50 CONDITION CONDITION 14 If the light measured 2 milliseconds after the flash has fired is less than 50 of the total needed for a proper exposure the camera decides the subject is FAR 9 IN LOW LIGHT FAR EXPOSURE WILL END AT 100 s OR 296M5 15 In a low light FAR picture the blades open fully and the photocell sees scene light through the photopic filter When 100 of the necessary light is seen or when the internal clock reaches 396 ms the flash is quenched and the shutter blades close 16 After the blades close the motor is turned on The timing gear advances the pick indexes the counter and brings the S5 actuator back to its original position The shutter system is latched closed ending the low ambient FAR sequence 10 17 For a non flash picture through a window the exposure is started by pressing S1 only The end exposure command is given either when the photocell sees 100 of the necessary light for a proper exposure or when the internal clock reaches 396 ms 11 OPEN FRONT DOOR REMOVE FILM PACK CLOSE FRONT OGOR Dark Stide Shutter Button To Normal Position for Picture Sq Opens Counter Advance to 10 Cha
2. 2 Model 636 Flash Exposure Adjustment a Remove the Front Plate Lens Panel see Fig 3 and replace it with the modified Front Plate shown in Fig 5 NPI 600AM 92 30 has more information b Using a dental pick narrow bladed screwdriver or other suitable tool adjust the IR calibration wedge see Fig 6 Move the IR calibration wedge counterclockwise CCW to decrease the reading or clockwise CW to increase the reading see Fig 6 c Replace the original Front Plate and retest the camera Readjust the IR calibration wedge if necessary d If the IR calibration wedge adjustment cannot bring the reading into specification disassemble the camera down to the shutter level and examine the photocell area Be certain the photocell is properly seated Reassemble the camera and retest Readjust the IR calibration wedge if necessary Remove dotted line area for access to Ambient Calibration Disc and I R Calibration Wedge Front Plate 1B2979A Fig 5 Replacing Front Plate with modified Front Plate ZF T TYAN oa v IR calibration wedge Fig 6 Adjusting IR Calibration Wedge 116 3 Model 636 Ambient Exposure Adjustment a Remove the Front Plate Lens Panel see Fig 3 and replace it with the modified Front Plate shown in Fig 5 NPI 600AM 92 30 has more information b Using a dental pick narrow bladed screwdriver or other suitable tool adjust the ambient calibration disc see Fig 7 Move the ambie
3. 14 Refer to the Sequence of Operation section for a description of the order in which all of the events in an exposure cycle occur The operating sequence is also shown in diagram form at the end of Section 2 19 LOW NEAR AMBIENT LIG ien HT FAR FILL FLASH 15 There are three different conditions in which a flash picture can be taken 1 In high ambient light 2 In low ambient light with the subject near the camera 3 In low ambient light with the subject far from the camera 16 Basically the Model 636 uses either a light measurement alone to fire and shut down the flash or a combination of light measurement and time measurement to fire and shut down the flash The method used depends upon scene brightness 20 INTERNAL CLOCK 17 After the flash is charged and the exposure button is pressed all the way in three things happen simultaneously which decide how the flash is going to be controlled 1 The solenoid releases the shutter blades and they start to open 2 The photocell starts to measure scene light 3 An internal clock in the camera logic is started 18 From this point there is a race between the internal clock and the photocell to decide which is going to control the flash Either the internal clock will time out before the photocell measures a pre determined amount of light or vice versa Whichever occurs first will fire the flash 21 7 WN 19 Now let s go
4. 636 Camera 600 film pack 636 Flash Flash charging Flash quenching Three flash picture conditions Flash control methods High ambient fill flash mode Photocell light measurement Low ambient flash exposure Subject near far determination IR light measurement Exposures without flash Camera inhibits SECTION 4 Disassembly and Reassembly PUNE Strobe components Removing Strobe Cover Discharging Strobe capacitor Removing Lower Housing Removing Flex E fog OOWWAAYAYNDADANA FW W SR Ree NRF Oe 13 14 15 16 17 18 20 21 22 23 24 25 28 28 33 34 35 37 38 38 39 39 Figure NAU 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 Description Removing Flashtube Flash Shield Insulator Unsoldering Flashtube wire leads Removing PC Board amp Plunger Apron Disassembly components Removing Apron from Body Removing Panel Front Plate Disassembling Close Up Lens amp Trim Button Reassembling Close Up Lens Replacing Shuttle Body Disassembly components Removing Cone from Body Removing Strap Assembly Removing Pack Spring Tripod Nut if present Removing Eye Cup Retainer Shutter Disassembly components Removing Viewfinder Housing Removing Opening Blade Spring amp Trim Slide Removing Ambient Cal Disc IR Cal Wedge IR Lens Filter amp Ambient Lens Filter Removing Lens Mounting Plate Removing Inertia Walkin
5. Fig 35 Tilt the Plate down ward into position making sure the Inertia pivot post enters its hole in the Base Block Snap the three locking tangs closed at the bottom of the Plate Fig 35 Replacing the Lens Mounting Plate 40 Replace the Trim Slide in the Lens Mounting Plate by depressing the tang below it and sliding it into place see Fig 36 Fig 36 Replacing Trim Slide 59 41 Replace the photometrics in this order as shown in Fig 37 Ambient Lens Filter green Infrared Lens Filter IR Calibration Wedge over the pivot on the IR Filter Lens and the Ambient Calibration Disk with the stops on the bottom Fig 37 Replacing photometrics on Lens Mounting Plate 42 Replace Opening Blade Spring with one end at the original marked rack position the other end on the Walking Beam pin Fig 38 Test that the Shutter latches and unlatches properly Fig 38 Replacing Opening Blade Spring 60 Drive Disassembly Button Return 1 Button as Spring Gear Drive Housing Assy Slider Return Spring i S5 Actuator N Motor amp Pinion j S1 Slider Counter ASSY Counter Spring Pick Return Spring Geaf ra E Gear 4 AM Timing Gear m cog Gear 1 KIS e Kt E SEEN d g e gv Spacer S1 Leaf i f ep Spring NN VA r Wf Gear 5 l Door Pawl E E eN l Contact t Block i ontact Support Bloc Moveable Pawl Spring pp Pack Pawl Fixed _ S10 Contact S10
6. Polaroid Repair Manual 636 636AF Instant Camera December 1995 Americas Business Center Technical Services 201 Burlington Road Bedford MA 01730 TEL 1 781 386 5309 FAX 1 781 386 5988 This page intentionally blank Model 636 Camera Service Manual CONTENTS Section Page 1 General Description 1 2 Sequence of Operation 3 3 Theory of Operation 13 4 Disassembly amp Reassembly 36 5 Troubleshooting 75 6 Testing with the Star Tester Camera Adjustments and Tester Calibration 85 7 Testing with the B 600 Tester Camera Adjustments and Tester Calibration 106 PARTS CATALOG Separate document See Polaroid Model 636 CAMERA PARTS CATALOG January 1994 for part names numbers and exploded views Figure LIST OF ILLUSTRATIONS Description SECTION 1 Model 636 Description 636 Camera SECTION 2 Sequence of Operation Flash charging fire amp exposure switches Strobe charging Strobe ready sequence Exposure sequence Exposure sequence clock amp photocell Fill flash sequence Flash quench shutter closing Motor drive of pick counter S5 actuator Low ambient exposure sequence Subject near far determination Low light near exposure control Motor drive of pick counter S5 actuator Subject far determination Low light far exposure sequence Motor drive of pick counter S5 actuator Non flash exposure control Camera Operating Exposure Sequence Diagram SECTION 3 Theory of Operation
7. 4 Record reading on Stops Error Meter Compare to spec 5 Repeat 3 amp 4 two more times 6 If reading out of spec see Adjustments Fig 7 Setup for 636 Graywall Test 98 the strobe in a standard integrating sphere located within the Tester The light output measurement is integrated over the duration of the flash and the measurement is displayed as correlated zonal lumen seconds on a meter on the Tester NOTE This test is not necesssary if Strobe Exposure Test is within spec DETAILED TEST PROCEDURE 1 Turn the Test Selector Switch located in the middle of the panel to ZLS Be sure the closeup lens is not in place 2 Erect the flash and open the camera door Install door pawl closure 12082 3 Install the camera on the Star horn Align the camera so the flash fits into strobe adapter 12657B on the tester To assure repeatable readings the flash must be fully seated in the adapter and pushed against the left wall with the front of the apron firmly against the light box 4 Press the Reset Button 5 Cover the photocell on the camera and press SI S10 fully to charge and fire the flash 6 When the flash fires observe the reading on the ZLS meter Record the reading and compare it to the specification NOTE In this test in addition to ZLS you can also observe strobe recycle time on the Timing meter and amp seconds on the DC Current meter 7 Repeat Steps 4 5 and 6 two more times to ins
8. 67 68 69 70 71 Replace the Viewfinder on the Cone Replace the Cone into the Body Replace the S1 and S10 Buttons Replace the Release Button Replace the Apron to retain the Release Button 12 This page intentionally blank 73 This page intentionally blank 74 SECTION 5 MODEL 636 CAMERA TROUBLESHOOTING Introduction Before performing the troubleshooting procedures presented in this section you should be thoroughly familiar with the Theory Sequence portion of this manual Quite obviously you must know how the 636 Camera works before you can start to diagnose its problems Initial Inspection The following procedure should be done before you get involved in an operational check of the 636 Camera Before long you will find this procedure becomes automatic and you will no longer have to refer to it for step by step guidance 1 Visual a Inspect the camera for obvious faults such as gaps between body parts and missing broken distorted scratched or otherwise defective parts Pay particular attention to lens viewfinder and flash shield components for signs of smudges and foreign matter Examine the camera for cosmetic defects which are beyond allowable standards b Look into the lens The shutter blades should be closed c Look at the Counter window With no film in the Camera the window should be blank indicating that the Counter has reset 2 Pre Operational a With the strobe closed press
9. Contact iE Gear Drive Cover 61 43 If necessary remove the S1 Leaf Spring from the Gear Drive Cover by pulling it forward slightly and then lifting it up see Fig 39 44 Disconnect the red jumper wire from the S10 movable contact by depressing the spring finger to release it Fig 39 Move the wire out of the way 45 If necessary remove the S10 movable contact 46 Disconnect the bare battery contact wire from the Contact Support Block and the S10 fixed contact by depressing the contact spring fingers Free the wire from the Drive Cover and move it away 47 If necessary to remove the S10 fixed contact release the tangs holding the contact by inserting the pins on Tool 12536 into the two holes shown in Fig 39 The contact can then be pushed out with a screwdriver Battery contact jumper wire to wire block baie S1 Leaf spring Jer 7 af 4 S10 Moveable contact o N pis f Y i To contact Sea r z gt ae E s a J apron block To battery Pa SN contact al eE 5 ir hr Vaar T T i a D ee ey al S10 Fixed contact _ Bare Wire Gear drive cover Fig 39 Disconnecting wires and removing parts from the Gear Drive Cover 62 48 49 NOTE Release the tension on the Counter and Pawl Springs see insets A and B Fig 40 Release the Drive Cover forward detent inset C the hanger detent inset D and the rear detent inset E In step 49 the metal g
10. First remove the Panel containing the Close Up Lens and Trim Button Assemblies Release the tabs at A and B Fig 9 which hold the Panel to the Apron then tilt out the top and lift it out freeing lip along the bottom edge If it is necessary to remove the adhesive Lens Panel Decal from the Panel gently work a greenstick under a corner of the Decal and peel it off Fig 9 Removing the Panel Front Plate from the Apron 43 10 Disassemble the Close Up Lens wearing finger cots or lintless gloves First remove the Spring with tweezers Fig 10 Next slide the Shuttle to the left and lift its left end to remove Now slide the Close Up Lens to the right and with a green stick under the right end carefully lift the Lens until the top edge clears the detent on the Panel Remove the Trim Button and Retainer by lifting each end of the Retainer away from molded pin on the back of Panel Fig 10 Fig 10 Disassembling Close Up Lens amp Trim Button 44 Reassembling the Close Up Lens amp Trim Button 11 Wearing finger cots or lintless gloves to keep the Lens elements free of smudges first engage the foot at the bottom right corner of the Lens with the Panel see Fig 11 Then slide the Lens to the left slightly and gently press down until it engages in its guides The Lens should slide back and forth freely _ Slide Lens to left Fig 11 Reassembling the Close Up Lens 12 Replace Shuttle
11. Solenoid plunger sticky 80 CORRECTIVE ACTION 9 Replace battery contacts 10 Replace flex circuit Replace S1 button or S1 slider Disassemble and install properly Re form S 1 contacts or replace contact support block if necessary 4 Check connection and correct problem Re form S 9 contacts or replace contact support block if necessary Replace solenoid See RIB 600AM 6 Adjust solenoid gap Repair or replace blades as necessary Replace shutter baseblock Correct cause of binding Repair replace solenoid PROBLEM Continuous Cycle cont d Continuous Cycle Camera runs but does not eject film Mid Cycle Failure PROBABLE CAUSE Counter spring unwound or not trapped in counter properly S 1 slider cam interface with counter not correct S5 P amp L contacts under S5 actuator 10 Shutter assembly not seated in cone properly 11 Flex circuit defective Stripped teeth on timing gear Sth gear missing or not in position Solenoid gap incorrect Battery wire not properly seated in con tact support block or in solderless battery contact Blades binding Battery contact height marginal or not seated properly Contact support block defective Solenoid defective Flex circuit defective 81 CORRECTIVE ACTION 7 Install counter spring correctly 8 Install S1 slider cam properly 9 Di
12. accurate reading 7 Ifthe reading is not within 7 If out of spec see Adjustments specification refer to Adjustments 113 C Model 636 Camera Adjustments to correct out of spec test results This section describes adjustments which can be made to correct readings which are out of specification on the B 600 Tester Refer to the latest Specification Chart to determine acceptable readings for each of the tests listed below The Camera Adjustments which follow are listed in the same order as the Test Procedures Flash Timing Aperture Flash Exposure Ambient Exposure 114 1 Model 636 Flash Timing Aperture Adjustment a Remove the Front Plate Lens Panel from the apron Fig 3 b Using tweezers grasp the end of the opening blade spring C Move the opening blade spring up in the rack to increase the reading or down in the rack to decrease the reading Fig 4 d Reassemble and retest the camera Readjust the opening blade spring if necessary e If the adjustment cannot bring the reading into specification replace the opening blade spring and repeat step c f If the reading is still out of specification disassemble the camera to the shutter level Examine the shutter area for loose or misplaced parts binding blades etc Correct any problems found and reassemble and retest thecamera Readjust the opening blade spring if necessary N Opening blade spring Fig 4 Adjusting Opening Blade Spring 115
13. back to the three conditions in which a flash picture can be taken The first is in high ambient light In this condition there is so much scene light available that the photocell always wins the race to fire the flash This is the Fill Flash mode of operation PHOTOCELL 20 In the high ambient or Fill Flash mode the photocell measures scene light When it sees 75 of the total light required for a proper exposure the photocell fires the flash 22 21 22 At this point the blades are still open and the exposure is being made The photocell continues measuring light which now includes the light bouncing back from the flash Next the camera must decide when to shut down the flash and when to close the shutter blades os i THYRISTOR SOLENOID PHOTOCELL In the high ambient Fill Flash mode the photocell makes the decision to shut down the flash and close the shutter blades It does this when it sees the remaining 25 of the light required for a proper exposure This light is provided by the flash The camera logic signals the flash to quench and commands the solenoid to close the blades 23 a N FINISH 23 The next condition in which a flash exposure can be made is in a low ambient condition low light level outdoor scenes and all indoor scenes In this condition there is so little light that the clock beats the photocell in the race to fire the flash When the clock reaches 74 millisec
14. by first sliding Lens to the left Fig 12 Do not replace Return Spring yet Now slip the right end of the Shuttle under the guide on the Panel Slide the Shuttle to the right into place The tab on the top of the Lens must be between the tabs on the Shuttle Replace Lens Return Spring check that Lens operates smoothly Slide Shuttle to right Fig 12 Replacing the Shuttle in the Close Up Lens 45 Body Disassembly Counter Window Retainer Counter Window _ Molded Light Shield _ Pack Spring c Cone Assy 46 13 To remove the Cone insert a flat blade screwdriver at the locations shown in Fig 13 springing out the sides of the Body slightly This frees the Cone from the catches inside the Body Lever the Cone forward out of the Camera Body The freed Release Button will drop out Fig 13 Removing the Cone from the Camera Body 14 Remove the piece parts from the Camera Body beginning with the Strap Assembly From inside the Body depress and release the tangs at the center of the Strap Assembly Fig 14 From the outside free the ends of the Strap Assembly from the Body and remove it Fig 14 Removing the Strap Assembly 47 15 Remove the Pack Spring by depressing it with your thumb and pulling it forward out of the Body Fig 15 If the Camera has a Tripod Nut it will now fall out Fig 15 Removing Pack Spring and if present Tripod Nut 16 To Remove the Eyecup Retainer one unit from
15. functional test on the 636 camera using film pack simulator 12467 3 ohms and power supply Power Mate 12531 or Lambda 12429 1 Setup a Plug the film pack simulator into the power supply Be sure the polarity is correct b Plug the power supply into a 110 VAC source c Turn the power supply switch ON d Adjust the output voltage to 6 0 volts 76 2 Test Open the front door of the camera and install the film pack simulator The camera should not cycle Remove the film pack simulator and install door pawl closure 12082 Install the film pack simulator again The camera should go through the dark slide cycle The shutter blades should remain closed The strobe should not charge green LED off The counter should go from blank to 10 Depress the S10 Button lightly so that it just touches the S1 Button Four to six seconds later the green LED should light indicating strobe is charged LED stays on about 30 seconds Depress 10 S1 Buttons fully the strobe should fire Repeat step d four more times Cover the photocell with black photographic tape and turn the Camera to face you Depress the S1 Button only the blades should open to a small aperture f 20 and then close Repeat the step above four times Remove the tape from the photocell Depress the S10 S1 buttons fully the camera will not cycle Empty Pack Lockout the strobe will charge the green LED will light in 4 6 seco
16. inside the Body depress either pair of the four tabs shown in Fig 16 and remove the Eyecup Retainer Eye Cup Retainer g A Z LL Fig 16 Removing the Eye Cup Retainer Body Reassembly Replace parts removed in Steps 14 16 Pack Spring holds Tripod Nut in place 48 Shutter Disassembly Flex Circuit Base Block Aspheric Meniscus Lens Lens Mounting Plate A T eg Ambient Lens Filter Solenoid gp ae en a Zh intrared Filter Lens yer Latah f IR Calib Wedge Walking Beas Ambient Catib Disc Inertia as Inertia Spring Opening Spring 49 17 Mount the Cone on a universal swivel fixture 18 Remove Viewfinder Housing by tilting rear end upward Fig 17 and rotating it forward note position of the tab at its left front Fig 17 Removing Viewfinder Housing 19 With tweezers remove Opening Blade Spring from rack and Base Block Fig 18 first noting which notch on the rack it s attached to and marking that notch to assure correct reassembly later 20 Remove Trim Slide by depressing the tang along its lower edge Fig 18 Fig 18 Removing Opening Blade Spring amp Trim Slide 50 21 Remove Ambient Calibration Disk by depressing tang at bottom Fig 19 22 Remove IR Calibration Wedge IR Lens Filter and Ambient Lens Photopic Filter from the Lens Mounting Plate Fig 19 Ambient Calib Disc Fig 19 Removing Ambient Calibration Disk IR Calibration Wedge I
17. low light NEAR shot the blades travel farther During blade travel a very small amount of visible light passes through the first photopic aperture The blades move to the position shown the strobe fires and a larger amount of infrared light passes through the infrared aperture to the photocell Exposure shutdown is dependent upon the combination of an extremely limited amount of visible light added to the larger amount of infrared light or on the clock time out 32 PHOTOPIC m avaa TAKING FILTER r APERTU RE Erst SECOND PHOTOPIC PHOTOPIC APERTURE APERTURE INFRARED INFRARED APERTURE FILTER 41 For low light FAR pictures the blades travel even farther First there is a very small amount of light passed through the first photopic aperture Next a very small amount of light passes through the infrared aperture Finally the blades open fully and a large amount of visible light passes through the second photopic aperture The exposure shutdown is dependent on the measurement of this combination of light or on clock time out FLASH OVERRIDE BUTTON SI 42 The flash may be bypassed on those rare occasions where it is not desired This is pretty much limited to taking pictures in daylight through a window In this condition the flash can be prevented from firing by pressing only the back part of the exposure button Exposure shutdown is determined by the photocell seeing 100 of the light required for a proper exposure or by
18. tester horn see Fig 5 J Set the horn in the lowered position Fig 5 NE PEE cae Horn riser 12884 CAS Horn in lowered position Fig 5 Test setup and Horn Riser position for Model 636 91 D Star Tester Controls and Indicators The Star Tester 12650 2 is used to check exposure and timing related parameters of Polaroid cameras This section deals exclusively with the 636 Polaroid Camera The light box and the electronics required to compute and display exposure timing and functional test measurements are housed in a single chassis see Fig 6 Presented below are the functions of the controls and indicators on the Star Tester Refer to Figure 6 KEY CONTROL INDICATOR 1 Disc Position Lamps 2 Reset Button 3 Disc Ride Time Switch 4 Test Selector Switch 5 Horn Volts Selector Switch 6 20 Volt 2000 Volt Selector 7 Volt Probe Jack 8 Timing Meter 9 DC Volts Meter 10 Stops Error Meter 11 DC Current Meter 92 FUNCTION Not used Clears Tester electronics between tests Not used for 636 Selects test mode 8 for 600 cameras 3 for other cameras Allows selecting supply voltage of 5V low 6V nom 6 8V high Simulates film pack battery Used in conjunction with volt probe jack key 7 and DC volt meter key 9 allows Tester to be used as voltmeter Accepts standard probe for checking DC voltages in cameras under test Provides digital readout of strobe recycle tim
19. the S10 button It should not move being held out by the interlock tab on the strobe housing b Erect and then close the strobe It should move through its entire travel freely with no binding Also when the strobe is erected and the camera is tilted forward the strobe should not fall forward c Move the lighten darken control tab from full light to full dark and then back to its nominal detent position It should move freely with no binding during its travel d Press the front door release button It should offer some resistance to thumb pressure At the forward end of its travel the release button should drop the front door open Close the front door to be certain it latches properly 75 e Press the S10 S1 buttons through their entire travel They should move smoothly with no binding f With the front door open look into the film compartment Check the following Pack spring and battery contacts are not distorted Taking mirror is not broken loose or scratched Spread roll bracket assembly components are OK and rollers move freely Spread rollers are clean With pick height gauge 12430 or 12504 see P A SX 70 291 see that the pick is positioned correctly No foreign material in film cavity Hanger is in proper position Pack pawl leg is in a down position and not distorted Cone filler 550851A is in position or cone has molded fix See RIB 600AM 6 3 Functional Test Perform the following
20. the internal clock timing out at 396 ms 33 DAR N sil Ex INHI BAS 43 The dark slide cycle is the same as in Pronto type cameras When a fresh pack is loaded and the front door closed S1 and S9 are closed and the solenoid energized The S5 actuator drops closing S5L and S5P turning on the motor The dark slide is ejected and the counter set to 10 The slider is cammed back by the counter opening S1 and S9 The rotation of the timing gear lifts the S5 actuator opening SSL and S5P The camera is now ready for the exposure cycle DURING EXPOSURE CYCLE FLASH WILL NOT CHARGE FLASH IRES ONLY WITH 10 1 CLOSED 44 During an exposure cycle the camera electronics prevents the flash from being recharged Also once the flash is charged S10 must be closed along with S1 to fire the flash You cannot release S10 and press only S1 to fire the flash 34 45 There are two mechanical inhibits When the counter reaches its blank setting S1 is prevented from closing This is the same as the empty pack lockout feature on Pronto cameras TAB LOCKS OUT S10 46 Finally when the camera is in the folded position 10 is mechanically locked open by a tab on the flash housing This prevents the flash from being charged 35 SECTION 4 MODEL 636 DISASSEMBLY AND REASSEMBLY Tools needed Dump Probe P N 11604 Universal Flex Remover Tool P N 12601 Strobe Housing Removal Tool P N 12633 2 Viewfinder Panel Remover P N 1
21. 2552 3 Contact Removal Tool P N 12536 3 32 diam dowel pin for Shutter Blade reassy Exacto knife with No 11 blade Soldering aid greenstick P N 94168 Finger cots or lintless cotton gloves Needlenose pliers Tweezers and dental pick Disassembly Note No screws or threaded fasteners are used in the 636 Camera most housings and piece parts of sub assemblies are held in position by detents spring catches or tangs which engage bosses or cutouts in corresponding mating parts Careful spring apart techniques will free most parts of the 636 Flex connecting tabs are held in their solderless contacts by internal spring contact pressure Safe easy removal of the flex is done by inserting the appropriate size leg of Universal Tool 12601 into the connector This releases the grip of the internal contacts and allows the flex to be pulled out together with the removal tool Contents of this Section Page Strobe Disassembly 37 Strobe Reassembly 41 Apron Disassembly 42 Close Up Lens Disassembly 44 Close Up Lens Reassembly 45 Body Disassembly 46 Body Reassembly 48 Shutter Disassembly 49 Shutter Reassembly 55 Drive Disassembly 61 Drive Reassembly 66 Door Spread Sys Disassembly 71 Reassembly completion 72 Note Reassembly instructions are listed in the contents above only if they include specific detailed steps in contrast to simply replacing parts removed 36 Strobe Disassembly Nil Flash Shield Flashtube A
22. 34 Reconnect the Flex to the Contact Support Block Motor and Wire Block Assembly see Fig 30 Fig 30 Reconnecting Flex to Contact Support Block Motor and Wire Block Assembly 56 35 Reassemble the Shutter blades by inserting a dowel pin 3 32 x 3 4 2 4 x 19 mm in the hole in the Base Block shown in Fig 31 Wearing finger cots or lintless gloves install the bottom middle and top Shutter Blades over the 3 32 dowel pin and with the molded pin on Base Block projecting up through the slot in Blades Fig 31 Fig 31 Replacing the Shutter Blades 36 Mate the Inertia and Walking Beam together and install the Inertia Spring as shown in Fig 32 Check that both parts pivot smoothly and are returned by spring action Fig 32 Reassembling Inertia Walking Beam amp Spring 57 37 Replace the Inertia and Walking Beam Assembly by engaging the four pins in the Blades Solenoid Plunger Yoke and Base Block pivot point see Fig 33 Carefully remove the dowel pin and test Shutter Blade operation by moving the Walking Beam Assembly to produce an aperture Fig 33 Replacing Walking Beam Inertia Assembly 38 Pivot the Inertia slightly to the right and slip the Shutter Latch down onto the pivot beneath the Inertia Fig 34 It must mate with the S5 Actuator Fig 34 Replacing the Shutter Latch 58 39 Replace the Lens Mounting Plate by placing the two tabs at the top into their corresponding openings in the Base Block
23. 53 Reconnecting wiring to contacts 70 Door and Spread System Disassembly 66 Remove the Door Assembly by disengaging the hinge on the right side opposite gears then the hinge on the left side 67 Remove the Spread System Assembly by inserting an Exacto knife with a 11 blade just below the lower leg of the spring on the left non gear side see Fig 54 Keep the blade flat in the same plane as the rollers with the dull edge against the end plate The tip of the blade should be halfway between the front and rear legs of the spring 68 Swing the knife handle to the right a little so the tip of the blade pushes to the left against the inside of the end plate Fig 54 This will unlock the hidden detent in the left end plate from its channel in the door allowing the left end of the Spread System to be pulled out slightly Use care detent will break off if deflected too far 69 Repeat the process on the right gear side gently pushing the tip of the blade to the right slightly releasing the detent in the right end plate from the door channel Now remove the Spread System Assembly Blade flat under spring leg Top view es Detent finger in Sprea i end plate Detent notch in Door Push gently to left to release detent rusn gently to right ea WY oe I J 4 Se Fig 54 Removing the Spread System from the Door 71 To complete the reassembly of the Camera
24. Camera B Graywall Preparation C Setting Up the Model 12650 2 Star Tester D Star Tester Controls and Indicators E Testing the Model 636 Camera 1 Pretest procedures 2 Order of Model 636 tests Oo Model 636 Test procedures Flash Timing Ambient Exposure Strobe Exposure Graywall ZLS Output aoe F Camera adjustments correcting out of spec test results 1 Flash Timing 2 Ambient Exposure 3 Strobe Exposure G Calibrating the Model 12650 2 Star Tester 85 Page 86 86 88 92 95 95 95 96 97 98 99 100 101 102 105 A Test Specifications for Model 636 Camera Test Specification Flash Timing 2 0 to 13 0 ms Ambient Exposure 0 30 to 0 10 Strobe Exposure Graywall 0 0 to 0 50 ZLS Output 260 to 400 ZLS Charge Time 2nd cycle 4 sec max Energy Draw 2nd cycle 12 5 amp sec B Graywall Preparation 1 The target should be constructed of a flat hard board material such as Masonite It must be a minimum size of 4 ft x 4 ft 1 2 m x 1 2 m Prepare the surface by applying a primer coat of flat white latex paint The surface must have a uniform white appearance when dry If necessary use two coats of flat white latex paint to achieve uniform coverage Allow 24 hours for the primer to dry After the primer has dried apply two coats of special gray paint which has been provided The two coats must be applied in opposite directions For example apply the first coat in an up and
25. Camera The procedures which follow are set up with detailed instructions in one column and a summary of the instructions in a second column Once you have become familiar with the testing procedures reference to the summary should be all that is necessary to test the cameras 1 Pre Test Procedures Before beginning the testing check all connections between the Tester and the Star horn and the oscilloscope if being used Check the AC line connections Clear the area around the Tester to be certain there is sufficient air flow for proper cooling of the elec tronics Turn the Tester ON and observe that the power on lamp is illuminated 2 Order of Tests It is very important that the Model 636 Camera tests be done in this order 1 Flash Timing 2 Ambient Exposure 3 Strobe Exposure Graywall 4 ZLS Output Not necessary if Strobe Exposure is correct 95 3 Model 636 Camera Test Procedures in the order in which they should be performed Model 636 Flash Timing This test determines if the proper infrared sensing is accomplished during a strobe exposure The time between shutter blades being 95 fully open and strobe fire is measured and displayed in milliseconds NOTE This procedure assumes the Tester is ON and the Camera is on the horn against the Tester DETAILED TEST PROCEDURE 1 Turn the Selector Knob in the middle of the panel to 640 FLASH TIMING 2 Press the S10 button only to charge the electronic flash Do no
26. Correct any problems found and reassemble and retest the camera Readjust the opening blade spring if necessary Opening blade spring Fig 8 Removing Front Plate Fig 9 Adjusting Blade Spring 100 2 Ambient Exposure a With the Camera off the Tester remove the Front Plate Lens Panel and replace it with a modified Front Plate as shown in Fig 10 See NPI 600AM 92 30 for more information b Using a dental pick narrow bladed screwdriver or other suitable tool adjust the ambient calibration disc Move the ambient calibration disc clockwise CW to decrease the reading or counterclockwise CCW to increase the reading Fig 11 c Replace the original Front Plate and retest the camera Readjust the ambient calibration disc if necessary d Ifthe ambient calibration disc adjustment cannot bring the reading into specification disassemble the camera down to the shutter level and examine the photocell area Be certain the photocell is properly seated Reassemble the camera and retest Readjust the ambient calibration disc if necessary Remove dotted line area for access to Ambient Calibration Disc and I R Calibration Wedge From Plate 1B2979A Ambient calibration disc Fig 11 Adjusting Ambient Calibration Disc 101 3 Strobe Exposure Graywall NOTE If the Strobe Exposure readings are out of spec perform the ZLS Output test before making the adjustment below If ZLS reading is out replace the strob
27. NTERNAL iD CLOCK SSP As the solenoid pulls in it releases the walking beam from the shutter latch The spring loaded S5 actuator drops down closing the SSP and SSL contacts SSL starts an internal clock The camera electronics signal the solenoid to deenergize 4 PHOTOCELL MEASURES LIGHT SOLENOID DE ENERGIZED SPRING OPENS SHUTTER BLADES With the solenoid deenergized and the walking beam free of the shutter latch spring action opens the shutter blades The internal clock is running and the photocell starts to measure light 7 _ IN FILL FLASH oe See ELECTRONIC FLASH FIRESAT 15 In a fill flash exposure when the photocell sees 75 of the light needed for a proper exposure it signals the flash to fire The flash provides the remaining 25 of the necessary light Note that in a fill flash exposure the photocell always beats the internal clock in ordering flash fire IN FILL FLASH BLADES CLOSE AT 100 When the photocell sees 100 of the light needed for the exposure the camera electronics orders the flash to quench and the solenoid to energize The solenoid then pulls the blades closed After the blades close the motor is turned on activating a gear drive system similar to the system in the OneStep The timing gear advances the pick indexes the counter brings the S5 actuator back to its original position The solenoid deenergizes and the shutter system is again latched closed ending
28. R Lens Filter amp Ambient Lens Filter 23 Remove Lens Mounting Plate by releasing the three tangs along the bottom edge which fastens it to the Shutter Base Block see Fig 20 Fig 20 Removing Lens Mounting Plate from Base Block 51 24 Remove Inertia and Walking Beam as an assembly keeping Inertia Spring in place Fig 21 25 Wearing finger cots or lintless gloves remove Shutter Latch and Shutter Blades keep blades in the same relative positions and order in which they were removed See Fig 21 Fig 21 Removing Inertia Walking Beam Shutter Latch and Shutter Blades 26 Disassemble Inertia and Walking Beam by removing Inertia Spring and lifting off Inertia Fig 22 To aid in later reassembly note the trapped position of each leg of Spring before removing it fo Fig 22 Disassembling Inertia from Walking Beam 52 2T Using Universal Flex Removal Tool remove Flex from Contact Support Block and Motor Fig 23 Now lift Wire Block Assembly off the Cone and remove the Flex from the Wire Block Fig 23 Fig 23 Removing Flex from Contact Support Block Motor and Wire Block 28 Remove the Base Block from the Cone by releasing the two locking tangs near Motor and Counter Wheel see Fig 24 swinging bottom edge of Base Block out and lifting it off the two shoulders at the top of the Cone Fig 24 Removing Base Block from Cone 53 29 With Flex Removal Tool disconnect Flex from the Solenoid con
29. Spring attached as shown in Fig 50 Attach Spring to housing and be sure Pick slides freely COUNTER SPRING PICK RETURN SPRING PICK cS DJ E Ree A h ue is Fig 50 Replacing Pick and Return Spring 68 62 Install the Timing Gear on its shaft Fig 51 It may be installed in any position as long as none of its cams interfere with the motion of the Pick The camera will time itself in its first cycle ee T ER SF 9 X ae 4 kmn x a tyr PACK PAWL PAWL TIMING pore SERING GEAR DOOR PAWL Fig 51 Replacing the Timing Gear 63 Replace the Gear Drive Cover see Fig 41 carefully maneuvering it into place to prevent breaking the rear left end detent Snap in the forward detent first then the hanger detent finally the rear detent 64 Using a dental pick set the Counter Spring and Pawl Spring as shown in Fig 52 WIND SPRING FORWARD SET PAWL SPRING UNDER Tag Fig 52 Setting Counter and Pawl Springs 69 65 Replace any Contacts and parts removed from the Gear Drive Cover in steps 43 47 Reconnect the battery wire to the S10 fixed contact and the Contact Support Block and the red jumper wire to the S10 movable contact see Fig 53 To wire block age To ig ee eee A Contact a i 7 ADA s S10 Fixed Se gt gt reer r pr REA Contact Bare wire S1 Leaf S10 Moveable Spring To contact ontact support block DA A Cc Fig
30. Turn the test selector switch to Ze Selector to 640 FLASH 640 FLASH EXPOSURE EXPOSURE 3 Flip the mode switch to EXPOSURE 3 Mode switch to EXPOSURE 4 Orient the camera on the horn so 4 Camera 4 5 ft from graywall it is exactly 4 5 ft from a graywall 5 With photocell uncovered press 5 Take flash exposure S10 S1 to take a flash exposure 6 When strobe fires record reading 6 Compare reading to shown on Relative Error in Stops meter spec Compare reading to the specification 7 Repeat steps 5 and 6 two more 7 Repeat 5 amp 6 twice times to insure accurate reading 8 Ifreading is not within specifi 8 If out of spec see Adjustments cation refer to Adjustments 112 Model 636 Ambient Exposure This test measure the energy on the film plane during an ambient exposure at 100 cd sq ft scene brightness NOTE The following test assumes the camera is on the horn against the light source DETAILED PROCEDURE SUMMARY 1 Turn the test selector switch 1 Selector to 600 EXPOSURE to 600 EXPOSURE 2 Flip mode switch to EXPOSURE 2a Mode switch to EXPOSURE 3 Set the light source selector 3 Light source to 100 cd sf to 100 cd sq ft 4 With the photocell uncovered 4 Press S1 press S1 only 5 When exposure is made record 5 Compare reading to spec the reading shown on the Relative Error in Stops meter Compare reading to specification 6 Repeat steps 4 and 5 two more 6 Repeat 4 amp 5 twice times to insure
31. down direction and the second coat in a left and right direction Allow plenty of drying time between the two coats The amount of drying time is dependent on tempera ture and humidity Choose a suitable location for the testing area The following conditions must be met a The testing area must be located where lighting on the graywall target will remain below 10 candles square foot Most room lighting meets this requirement Avoid areas where outside light shining through a window can strike the target resulting in erroneous strobe exposure readings b Select an area where the graywall target can be secured to a wall which is perfectly flat The area must be large enough to allow the testing equipment to be placed 4 5 feet 137cm from the target see Figure 1 The area must be free of any obstacles between the camera under test and the graywall 86 5 Secure the graywall target to the wall and set up the test equipment as instructed in the setup procedures The center of the target must be aligned with the taking lens of the camera under test Fig 1 Graywall setup 87 C Setting up the Model 12650 2 Star Tester 1 Install the Star Tester on a level surface with sufficient clearance to allow proper air flow for the cooling fan and exhaust vents Also the tester work surface should be located so the various fixtures can be located 4 5 feet 137 cm from a graywall target Le Insert a modified strobe fixture 12657B see inse
32. e a With the Camera off the Tester remove the Front Plate Lens Panel and replace it with a modified Front Plate as shown in Fig 10 See NPI 600AM 92 30 for more information b Using a dental pick narrow bladed screwdriver or other suitable tool adjust the IR calibration wedge Move the IR calibration wedge counterclockwise CCW to decrease the reading or clockwise CW to increase the reading Fig 12 Replace the original Front Plate and retest the camera Readjust the IR calibration wedge if necessary d If the IR calibration wedge adjustment cannot bring the reading into specification disassemble the camera down to the shutter level and examine the photocell area Be certain the photocell is properly seated Reassemble the camera and retest Readjust the IR calibration wedge if necessary Fig 12 Adjusting IR Calibration Wedge 102 NOTES 103 NOTES 104 G Calibrating the Model 12650 2 Star Tester This procedure is a guide for a periodic calibration check of the Star Tester The details of actual adjustments are included in a separate document All readings should be within 0 03 stops or 3 of the specification Any re calibration must be done in the order shown See your calibrator box specification sheet for actual readings Allow a minimum of 10 minutes of warm up time before checking calibration NOTE Applicable to Model 636 Camera SUMMARY Manual Reset Adjustment Star Tester S
33. e Master Camera on the horn with the motor switch OFF and the meter switch ON 3 Place the Master Camera in front of the Light Source window Set the light level for 100 cd sq ft 4 Slide the blade control all the way to the left as viewed from the back of the Camera until you hear a click This signals the blades have unlatched 5 Slide the blade control all the way to the right this is the blade position at which the standard camera is indicating the visible light level Since the standard camera is a direct reading device the meter reading is the actual light level 6 Tilt the camera and the horn back so that the shutter blades can be seen through the taking lens 7 Slide the blade control to the left until the shutter is at full aperture this is the point at which the camera will indicate the IR light level 8 Place the camera back in front of the Light Source the meter reading should be 3 5 to 4 times the visible mode reading Ideally the visible reading should be 100 and the IR reading 350 to 400 118 10 If this is not the case the light level must be adjusted Remember that adjusting the light level also affects the visible IR ratio Also increasing the lamp voltage causes the IR level to drop When the 100 cd sq ft level is correct and the ratio acceptable calibrate the remaining light levels as follows slide the blade control all the way to the right and adjust the correspond ing detent block on the fr
34. e Slider Assembly over the pivot on the housing Fig 45 Be sure the tip of the S5 Actuator is over the Shutter Latch see Fig 45 ty d 7 ONN Aa Fig 45 Replacing Actuator and Slider Assembly 56 Push the Slider back and position the Contact Support Block onto the housing see Fig 46 Before snapping detents closed be sure that the lower S1 contact is positioned between the Slider fingers Snap detents closed and release Slider Verify that Slider moves freely and Slider fingers and switch contacts are properly positioned SLIDER FINGERS LOWER S1 CONTACT Fig 46 Verifying Slider Switch contact relationship 66 57 Using Fig 47 as a guide replace the four plastic gears metal gear 5 and the spacer Fig 47 Gear placement guide 58 Referring to Fig 48 replace the Door Pawl and Pawl Spring Ip PAWL PAWL SPRING TIMING CERE GEAR i DOOR PAWL Fig 48 Replacing Door Pawl and Spring 67 59 Set the Counter Spring into the Counter Fig 49 wind the Spring push in the Slider and place the Counter on its shaft Temporarily hook the Spring onto the lower detent Note that the number 6 is upside down and facing forward Release the Slider the Counter should lock into place and the number 7 drop so it is facing forward upside down TEMPORARILY HOOK SPRING HERE Fig 49 Replacing the Counter 60 Install the Pack Pawl in the position shown in Fig 48 6l Install the Pick with Return
35. e and flash timing Provides digital readout of circuit voltages May also be used with probe in Volt Probe jack key 7 Provides digital readout of ambient amp strobe exposure Provides digital readout of input energy amp secs during flash charge in ZLS mode May also be used to monitor drain in other test modes 12 13 14 15 16 17 18 19 CAUTION CONTROL INDICATOR ZLS Meter Power Switch Pack Simulator Jack Strobe Adapter Horn Connector Disc Detector Connector J4 Connector Test Point Connections FUNCTION Provides digital readout of flash output ON OFF switch for Tester line voltage Illuminates when ON Contains circuit breaker Provides a connection for Pack Simulator allowing Tester to be used as a power supply Aligns electronic flash of camera under test to Tester No 12657B used for 636 Camera Provides the electronic inter face for the Star Tester Horn Not used with 636 For future applications Used for electronic interface with oscilloscope and also Tester calibration used for When the Star Tester is not being used for a length of time turn the Test Selector knob to 660 FLASH EXP This prevents unnecessary wear of the light source bulb and keeps the Tester in a neutral state ready for the immediate resumption of testing 93 TIMING vors 2 c A FE Fig 6 Star Tester Controls and Indicators 94 E Testing the Model 636
36. ear 5 may become dislodged Be careful that it is not lost Fig 40 Releasing springs and Gear Drive Cover detents 63 50 Refer to Fig 41 place your thumb over the left end of the Gear Drive Slowly and carefully lift the right end of the Cover Remove the Cover by walking the left end free of its detent Use care to not break the detent Fig 41 Removing the Gear Drive Cover 51 Remove the Timing Gear Pack Pawl Pawl Spring Door Pawl and if not dislodged earlier Gear 5 Fig 42 Parts removal from Gear Drive 64 52 Remove the Counter and Counter Spring by pulling the Counter off its shaft Fig 43 Remove the four remaining Gears and the Spacer from their shafts Fig 43 Release the back end of the Pick Return Spring and slide the Pick forward Lift both parts free of the Cone Assembly Fig 43 COUNTER SPRING COUNTER PICK RETURN a SPRING PICK Fig 43 Removing the Counter Gears amp Pick 53 Push the Slider in as shown in Fig 44 inset Push in detent and the Contact Support Block will pop out Let it hang from the Flex if Flex has not already been removed Pull the S1 Slider and S5 Actuator free of the Cone Fig 44 Disassemble Slider components S1 SLIDER ASSEMBLY S5 ACTUATOR RETURN SPRING Fig 44 Removing S1 Slider and S5 Actuator 65 Drive Reassembly 54 Install the S5 Actuator on the Slider Hold them together while installing them on the Cone 55 Install th
37. ences between the Model 636 and the OneStep is the type of film it uses Like all of the 600 line the 636 uses a new film format The film has a speed of 600 ASA PACK TABS mae On the inner edge of the 600 film pack is a set of molded plastic tabs which interface with the pack spring in the camera The two middle tabs press down the ramps of the pack spring allowing the film pack to slide over the stop for insertion into the camera On older style SX 70 packs there are no tabs As a result the pack is prevented from being inserted into a 600 line camera by the pack spring stop 14 De On the other hand a 600 film pack cannot be inserted into an SX 70 style camera since the tabs on the pack are held back by the older style pack springs 6 The battery in the 600 film pack has a higher capacity than the conventional SX 70 battery It provides power for the shutter solenoid the motor and for the built in electronic flash 15 When you open the camera you can see another obvious difference between the Model 636 and the One Step a built in electronic flash The flash is designed to be used for all pictures both indoors and outdoors The electronic flash features a rapid charge time of about 5 seconds For outdoor pictures the flash is used to provide a proportional fill flash to eliminate objectionable shadows Indoors the flash provides controlled light for scenes within a 4 to 10 foot range 16 9 The flash
38. etector clip over the camera strobe Set the light source selector to 100 cd sq ft Install the door pawl closure 12082 in the camera and set the camera on the horn RESET Align the camera in front of the light source Cover the camera photocell with finger and press S10 S1 until strobe fires When strobe fires record reading shown on Relative Error in Stops meter Compare the reading to the specification Repeat steps 6 and 7 two more times to insure accurate reading If reading is not within specifi cation refer to Adjustments 110 SUMMARY 1 Selector to FT and BB APERTURE 2 Mode switch to APERTURE 3 Plug in strobe flash detector Install detector clip on camera 4 Light source to 100 cd sq ft 5 Install door pawl closure Set camera on horn in front of light source 6 Cover photocell fire strobe I Compare reading to spec 8 Repeat steps 6 amp 7 twice 9 If out of spec see Adjustments Strobe detector clip Camera electron TE r i Strobe Flash a Detector 12790 Pa s Fig 2 Camera on Horn ready for testing 111 Model 636 Flash Exposure This test measures the resultant energy on the film plane during a flash exposure equivalent to a 4 5 ft graywall exposure NOTE The following procedure assumes the camera is on the horn DETAILED PROCEDURE SUMMARY 1 Set the camera L D control to its 1 Camera L D to mid point mid point setting 2
39. etting Cal Box Setting Necessary Point 1 640 FL EXP B STR Pulse No Card 1 R4 2 ZLS Use Std Camera No Card 1 R6 3 Ambient 600 B AMB Pulse No Card 1 R5 4 660 FL EXP B STR Pulse No Card 2 R1 5 610 620 FL EXP C AMB Pulse No Card 2 R3 6 SX 70 Aper D AMB Pulse Yes Card 2 R4 7 Ambient 150 C AMB Pulse No Card 2 R2 8 Pronto 3 Aper E AMB Pulse Yes Card 2 R5 9 ZLS Amp Sec A AMB Pulse Yes Card 3 R32 10 ZLS Recycle Time A AMB Pulse Yes Card 3 R25 11 Ambient 600 Light level STD Via access Adjust for 100 cd sq ft hole in rear panel of Tester For steps and 3 thru 10 connect the calibrator box to the Star Tester horn connector J1 Set the cal box as indicated press Reset on the Star Tester then press Cycle on the cal box Note the appropriate readout on the Star Tester Repeat when the Busy light is not lit 105 SECTION 7 636 CAMERA TESTING WITH THE B 600 TESTER CONTENTS Page A B 600 Tester functions controls amp indicators 107 B Model 636 Camera Testing 109 1 Camera Test Specifications 109 2 Pretest Procedures 109 3 Test Procedures a Flash Timing Aperture 110 b Flash Exposure 112 c Ambient Exposure 113 C Model 636 Camera Adjustments correcting out of spec test results 114 1 Flash Timing Aperture 115 2 Flash Exposure 116 3 Ambient Exposure 117 D Calibrating the B 600 Tester 118 106 A B 600 Tester functions controls amp indicators The B 600 testing s
40. g Beam Shutter Latch amp Shutter Blades Disassembling Inertia amp Walking Beam Removing Flex from Contact Support Block Motor and Wire Block Removing Base Block from Cone Removing Flex from Base Block Removing Solenoid from Base Block Replacing Solenoid in Base Block Replacing Flex on the Base Block Remounting Base Block on Cone Reconnecting Flex to Contact Support Block Motor and Wire Block Assy Replacing Shutter Blades Reassembling Inertia Walking Beam amp Spring Replacing Walking Beam Inertia Assy Replacing Shutter Latch Replacing Lens Mounting Plate Replacing Trim Slide Replacing Photometrics on Lens Mtg Plate Replacing Opening Blade Spring 40 40 4 42 43 43 44 45 45 46 47 47 48 48 49 50 50 51 51 52 52 53 53 54 54 55 55 56 56 57 57 58 58 59 59 60 60 Figure 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Description Drive Assembly components Removing parts from Gear Drive Cover Releasing Springs and Drive Cover detents Removing Gear Drive Cover Removing parts from Gear Drive Removing Counter Gears amp Pick Removing S1 Slider and S5 Actuator Replacing Actuator and Slider Assy Verifying Slider Switch contact relationship Gear placement guide Replacing Door Pawl and Spring Replacing Counter Replacing Pick amp Return Spring Replacing the Timing Gear Setting Counter and Pawl Springs Reconnecting wiring to Contacts Removing Spread Sy
41. he Power On lamps light On a regular basis check the equipment to be sure nothing blocks the exhaust vents on the light source All of the testing procedures below assume that the test equipment is ON and is in good working order In the procedures which follow whenever reference is made to a particular control or indicator you may assume that the location is on the B 600 Electronics Unit If it is not the procedure will indicate where the control or indicator is located Also unless other wise indicated the Horn Pack Simulator switch should be at HORN the CAL Test switch should be at TEST the Norm Midcycle switch should be at NORM One other word You must remember that every time you install the camera on the horn you must press the MANUAL RESET button on the electronics unit to be certain that the electronic circuitry is cleared for the particular test you are doing This applies even in the middle of a procedure where the camera must be removed from the horn and then re installed REMEMBER PRESS THE MANUAL RESET BUTTON WHEN YOU PLACE THE CAMERA ON THE HORN 109 3 Test Procedures Model 636 Flash Timing Aperture The purpose of this test is to measure blade aperture at the point of flash fire DETAILED PROCEDURE l Turn the test selector switch to Ft and BB APERTURE Flip the MODE switch to APERTURE Plug the strobe flash detector fixture 12790 into the B 600 jack as shown in Figure 2 Install the strobe d
42. incorrect 2 S1O contact distorted 2 Re form contact 3 SIO jumper wire not 3 Install jumper wire trapped in movable properly contact or wire block properly 4 Bare wire not 4 Install wire trapped in fixed SIO properly contact properly 5 Flex circuit not 5 Install flex properly installed into PC board properly NOTE Use meter to check continuity between points 82 PROBLEM PROBABLE CAUSE CORRECTIVE ACTION LED does not light NOTE If strobe does not function Light leaks in picture Close Up Lens Does Not Function Properly see Strobe Failures 1 LED shorted at PC board 2 LED not installed properly on PC board 3 LED defective 4 Flex circuit defective 5 Strobe PC board defective 6 Film battery dead film pack absent 1 Light seal on cone missing 2 Baseblock photographic tape light seal missing 3 Mirror cover light seal not positioned properly 4 Film pack spring defective 1 Lens return spring missing or out of position 2 Shuttle binding in apron guide rails 3 Close up lens not riding in apron rails properly 4 Return spring tab broken 83 1 Correct short 2 Install LED properly 3 Replace LED PC board 4 Replace flex 5 Replace strobe 6 Insert fresh film pack 1 Install cone light seal 2 Install photographic tape on baseblock 3 Install mirror cover light seal properly 4 Replace pack spri
43. is charged by lightly pressing the camera exposure button The exposure mode is electronically inhibited until the flash is fully charged When the green LED comes on a picture can be taken by pressing the exposure button in all the way 10 An alternate way to charge the flash is to lightly press the exposure button The button can then be released After the green LED has come on the flash will stay fully charged for approximately one minute When the exposure is ready to be made the exposure button is pressed in fully in one motion 17 11 The built in flash is an electronic quench type flash It can provide a full output of about 340 zonal lumen seconds ZLS to illuminate a scene or it can be shut down early to provide less light to the scene The way the camera decides to provide full or partial light output will be discussed later FLASHTUBE MAIN CAPACITOR THYRISTOR TH 12 Whether or not the flash provides full output the main capacitor delivers the same amount of energy Therefore if the flash is ordered to shut down early some means must be found to dissipate the remaining energy in the circuit This remaining energy is diverted through a thyristor TH1 on the strobe board A sions Ye De A DECISIONS S o oe a a A o 13 Now let s talk about the way the camera logic decides when to fire the flash and how much light it needs from the flash before it quenches it S Sequence Df Operation
44. l on the rear of the Calibrator Do this for all ranges except Flash Timing For Flash Timing set the Range and rotary switches to the proper positions Set the CAL TEST switch to TEST Insert a fresh film pack with battery into the Master Camera Place the Strobe Detector over the strobe and charge the strobe by pressing the red Strobe Charge button Fire the strobe by pressing the flash button the reading in stops error should correspond to the reading marked on the Calibrator label Checking Graywall Reflectance 1 With the Master Camera on the Horn set the Motor Switch to OFF and the shutter blades at full travel Set the Electronics Unit to 640 FLASH EXP Place the Horn with the Master Camera 4 5 ft 137 cm from the graywall Charge the strobe and fire it with the flash button on the front of the strobe The reading on the STOPS ERROR Meter should correspond to the reading on the Master Camera 120
45. n outward appearance As an extension of the 636 Camera line the 636 AF uses a slightly modified version of the Impulse shutter and a repackaged version of the Joshua electronics and software It uses wink autofocus from two feet to infinity a rapid recharge strobe with a range of 10 feet and has a maximum shutter aperture of f 12 In addition to more than two dozen unique parts the 636 AF camera uses a combination of parts from the 636 the Impulse Shutter and Joshua electronics Ok ok xk Kk OK For more information please refer to NPI 600AM 95 44 dated March 27 1995 636 AF CAMERA CUSTOMER SERVICE INFORMATION MANUAL MARCH 1995 MODEL 636 AUTOFOCUS CAMERA PARTS CATALOG MARCH 1995 SECTION 2 MODEL 636 SEQUENCE OF OPERATION 55L 310 5 Q DARK SLIDE SWITCH 1 Shown here is the location of the switches which regulate flash charging flash fire and exposure We will now run through a flash exposure sequence LED MAIN CAPACITOR 2 Lightly pressing the exposure button closes the S10 contacts charging the strobe main capacitor SOLENOID ENERGIZED CAPACITOR FULLY CHARGED Si CLOSES Within five seconds the green LED at the rear of the strobe comes on indicating that the main capacitor is fully charged The picture taker may now press in the exposure button fully This closes S1 and S10 remains closed Closing S1 energizes the solenoid which pulls in slightly a gt WALKING BEAM I
46. nds the strobe will not fire the counter window will be blank 11 Remove the film pack simulator and door pawl closure the counter will return to its starting position Insert a known good film pack with film into the camera Take a 2 foot cyan background picture with strobe observe that the film transport and delivery systems are functioning properly observe the finished picture for complete coverage observe the finished picture for evidence of dirt or cracks on the taking mirror 78 TROUBLESHOOTING CHARTS NOTE Also see the RIB and Product Alert listing following these charts PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Dark Slide Cycle 1 Door pawl spring defec 1 Replace spring with Front Door Open tive or not loaded or load spring Non Continuous If under pack pawl properly cycling continuously go to Continuous 2 S1 slider fingers and 2 Disassemble and Cycling chart switches on contact install properly support block not interfaced properly S1 switch contacts 3 Re form S1 contacts deformed Closed with if possible Replace front door open check contact support with meter block if necessary Contact support block 4 Replace contact defective support block No Dark Slide Cycle S9 switch open check 1 Re form S 9 switch with meter contacts Replace support block if necessary S1 slider fingers and Disassemble and switches on contact install properly support block no
47. nector Fig 25 then lift Flex up and out from under the connector block With point of soldering aid carefully free the Photocell attached to the Flex from its mounting on the Base Block see Fig 25 Fig 25 Removing Flex from the Base Block 30 Using a soldering aid remove the Solenoid from the Base Block by releasing the two tangs see Fig 26 Carefully pry out the Solenoid with plunger in place using the soldering aid as a lever Fig 26 Removing Solenoid amp Plunger from Base Block 54 Shutter Reassembly 31 Replace the Solenoid with its Plunger in place into the Base Block The notch and guide pin on the Plunger yoke must face the rear of the Base Block see Fig 27 so that the yoke pin rides freely in the Base Block slot Fig 27 Replacing Solenoid with plunger in Base Block 32 Replace the Flex on the Base Block by first slipping the attached photocell up under its retaining fingers on the Base Block see Fig 28 Now bow the Flex slightly slip it under the Solenoid connector and down into position around the lens opening and Fig 28 Replacing the Flex on the Base Block 55 33 Remount the Base Block on the Cone by positioning the two openings at the top of the Base Block over the corresponding projections on the Cone see Fig 29 then rotating the Base Block down into position until the locking tangs near the Counter Wheel and Motor snap shut Fig 29 Remounting Base Block on Cone
48. ng 1 Install spring properly 2 Install shuttle properly 3 Install lens properly 4 Replace lens panel Additional 600 line Camera Troubleshooting help from Product Alerts and RIBs NOTE Many of the problems and fixes described below were temporary solutions later permanently corrected by design manufacturing changes Thus the repair material described below may or may not be present in or applicable to a later version of the camera Subject Troubleshooting Update 600 line cameras Exposure Flex Photocell movement Trapped Shuttle in CU lens Continuous cycle from angled film pack Strobe LEDs red only red amp green green only Hybrid 2 LED Strobe PC Boards Low cost one green LED Strobe No strobe charge from dirty 10 contacts Black dark pictures from light leaks to photodiode Black pictures from light leak behind strobe Streaked pictures from apron light leaks Continuous cycling from Contact Support Block Release Button Door Latch clearance problem Oxidation on flex circuit solder pads 84 Bulletin 600AM 46 600AM 92 35 600AM 83 600AM 92 22 600AM 91 17 600AM 48 600AM 93 40 600AM 95 45 600AM 78 600AM 91 16 600AM 91 6 600AM 96 3 36 84 10 27 92 10 31 87 3 26 92 12 16 91 5 2 84 1 18 93 7 9 95 8 13 87 12 16 91 5 28 91 12 11 89 SECTION 6 636 CAMERA TESTING WITH THE STAR TESTER CONTENTS A Test Specifications for Model 636
49. nt calibration disc clockwise CW to decrease the reading or counterclockwise CCW to increase the reading see Fig 7 c Replace the original Front Plate and retest the camera Readjust the ambient calibration disc if necessary d If the ambient calibration disc adjustment cannot bring the reading into specification disassemble the camera down to the shutter level and examine the photocell area Be certain the photocell is properly seated Reassemble the camera and retest Readjust the ambient calibration disc if necessary Ambient calibration disc Fig 7 Adjusting the Ambient Calibration Disc 117 D Calibrating the B 600 Tester Calibration of the B 600 Tester is done in three steps 1 calibrating the Light Source 2 the Horn and 3 the Electronics Unit While the probability of the B 600 going out of calibration is unlikely the B 600 should be checked daily Calibrating the B 600 Light Source Light Source calibration is done using a 640 Master Camera which measures light levels in both the visible and infrared regions Two switches are located on the top of the Camera Motor ON OFF prevents the Camera from cycling while it is used as a light level standard and Meter ON OFF controls the meter on the back of the Camera A slide on the front of the Camera next to the lens controls the blade opening Calibration procedure 1 Turn ON the light source and let it warm up for 30 minutes 2 Slide th
50. nt exposure 3 When the exposure is made record 3 Record reading on Stops Error the reading shown on the Stops meter Compare to spec Error meter Compare the reading to the specification 4 Repeat steps 2 amp 3 two more times 4 Repeat 2 amp 3 two more times to insure accurate readings 5 If the reading is not in specifi 5 If reading is out of spec cation refer to the Adjustments see Adjustments section 97 Model 636 Strobe Exposure Graywall This test measures the resultant energy on the film plane during a 4 5 ft 137 cm graywall exposure NOTE Be certain the L D control on the Camera is at the mid point setting DETAILED TEST PROCEDURE 1 Turn the Selector Knob in the middle of the panel to 640 Flash Exp 2 Install the camera on the horn with the taking lens 4 5 ft 137 cm from a graywall target See Figure 7 3 With the photocell uncovered press SI S10 to take a flash exposure 4 When the flash fires record the readout shown on the Stops Error meter Compare the read ing to the specification 5 Repeat steps 3 and 4 two more times to insure accurate readings 6 If the reading is not within specification refer to the Adjustment section Horn must be located so camera taking lens is 4 5 feet 135 cm from graywall SUMMARY 1 Selector to 640 Flash Exposure 2 Camera on horn 4 5 ft 137 cm from graywall 3 Cell uncovered press 1 S10 for flash exposure
51. onds ms the flash is fired 24 Two milliseconds after flash fire a very important question is asked by the camera logic Is the subject near or far The answer is needed to properly set the clock for time out 24 2 The question is answered by measuring the amount of light seen by the photocell two milliseconds after flash fire More Than 50 near Less Way SOZ FAR 26 If the measurement is equal to or more than 50 of the light needed for a proper exposure the camera senses subject is NEAR If the measurement is less than 50 of the light needed for a proper exposure the camera senses that the subject is FAR 25 Low Amerenr 3 NEAR FAR 124 ms 396ms 21 For NEAR subjects the logic instructs the clock to stop the exposure at 124 ms after the blades open For FAR subjects the clock will time out at 396 ms to stop the exposure 28 However the ending of the exposure is also subject to the photocell light measurement In other words for a Low Ambient NEAR or FAR picture there is still a race between the photocell and the clock to shut down the flash and close the blades 26 LOW AMBIENT WEAR 100 OR 124 ms 29 In low ambient NEAR conditions the flash will shut down and the blades close either when the photocell has seen 100 of the light necessary for a proper exposure or when the clock times out at 124 ms LOW AMBIENT FAR 1007 OR 396ms 30 In low ambient FAR conditions the flash will
52. ont of the Light Source Ignore the visible IR ratio for the 800 50 and 6 25 cd sq ft positions Calibrating the Horn This procedure involves measuring offset and gain 1 Insert the Horn Extender Plug into the Horn Connector on the B 600 Electronics Unit front panel Plug the Horn into the Extender Plug Connect a DVM across pins 9 and 14 of the Extender Plug the two on the far right one above the other Slide the Master Camera on the Horn with the shutter blades closed The DVM should read less than 1 mv 0 001 volt If not adjust the offset insert a screwdriver in the hole on the right side of the Horn toward the front of the Camera Adjust the Offset control until the reading is less than 1 mv Open the shutter blades until they are at full aperture Place the Horn and the Standard Camera in front of the Light Source set at 100 cd sq ft The DVM reading should correspond to the number marked on the Master Camera If not insert a screwdriver in the hole on the left side of the Horn toward the front of the Camera Adjust the Gain control until the voltage is correct 119 Calibrating the Electronics Unit 1 2 Plug the calibrator into the Horn Connector Set the CAL TEST Switch to CAL Set the two switches on the Calibrator in the AMB and CONT positions Starting with the 75 exp range set the Range Switch on the Electronics Unit and the rotary switch on the Calibrator to the positions shown on the labe
53. or Flash Detectors and the electronics unit 9 Calibrate Test Switch Sets the electronics unit either for normal testing of 600 line cameras or for calibration of the electronics in conjunction with a special calibration test box 10 Manual Reset Button Used to clear the electronics when a camera is installed on the horn 11 Mode Switch Used to select exposure or aperture test mode 12 Pack Simulator Provides connection for power paddles allowing the tester Connection to be used like a power supply 13 Horn Pack Simulator Allows switching of electronics for testing Switch cameras on horn or with separate power paddle 107 3 3 4 ey RELATIVE i ERROR IN STOPS 60ExP 3enoExP 76ExP FT ADEG PER ag C CURRENT STROB wl eureut ee _ MaceL amp 600 ELECTRONICS UNIT 12810 SiniLAtaR D POLAROID CORP CAMERA PRODUCT SERVICES MODEL B LIGHT Source Fig 1 Model B 600 Tester and Model B Light Source 108 B Model 636 Camera Testing 1 636 Camera Test Specifications Test Specification Flash Timing Aperture 02 to 07 Flash Exposure 15 to 55 Ambient Exposure 10 to 30 2 Pretest Procedures Before performing any of the tests below examine the B 600 testing system Check the electrical connections between the electronic unit the light source and the horn to be sure they are properly made Turn the electronics unit and the light source ON and observe that t
54. ove the Flashtube itself unsolder the three leads from the Capacitor PC Board and Trigger Coil Fig 6 Fig 6 Removing Flashtube by unsoldering wire leads 40 7 Remove the PC Board by lifting it straight up off the molded post on the Lower Housing Fig 7 being careful not to lose the small S10 Plunger from the base of the Lower Housing Set Plunger aside Fig 7 Removing PC Board amp Flashtube Assembly amp Plunger Strobe Reassembly Replace the parts removed in the preceding Steps 1 7 in this order Flash Shield Plunger in hole in Lower Housing PC Board onto two posts in Lower Housing Insulator Flashtube Assembly into Lower Housing Insert the Lower Housing pivots into the openings in the Apron Reconnect the Flex to the PC Board Replace the Cover by inserting the tab and snapping the Cover into place on the Lower Housing 41 Apron Disassembly Viewfinder Housing Trim Button Retainer ae Negative Lens Shuttle al Lens Panel Front Plate Lens Panel Decal Apron Label Close Up Lens 42 Open the Film Door to remove the Apron Insert a soldering aid first at position A and then B Fig 8 to free the Body detent lugs from the Apron Carefully lever the Apron out of the Body Repeat the process on the opposite side The S1 Button and S10 Button with Return Spring will fall out Fig 8 Removing the Apron from the Camera Body Disassemble the Apron using a soldering aid
55. rge Steabe Solenoid Seats Camera Operating Exposure Sequence Diagram CAMERA IN PICTURE TAKING MOO Charge Strobe Shuner Button Latched Counter Empty Mode Counter to Start Position Sg Ctoses Shurter Buttan Untatches Paw Actuates S Eject Taking Sg Actustor Drogt Sms Ciote ld jE amp Ss S5 Se Start Timing Latch 24ms Inhibit Charge Battery Power Shutter Blades Start To Open Shutter fESms Full Open Strobe Fires 75V7 Fit Flash l by 76 31 me t9 from Salencid Release Lo A rn EE ee hh cs Oe rate el eek oe 39Gms 12 5 from Solenoid Release M 7 0 212 5 trom Soleacid Retease Short M T 0 Blades Start TaClose Imi 66 99ms Sols Pwr Up S P U T Blades Closed 66 99ms 12 5 End S P U T Motor Start Sol Pwr Down Proces Film Advance Counter Motor Rua ae gt Sy Open Motor and Sol Off Sg Open Battery Power Unletched Meter Coast nr o Chorge Stroebe Comers in Picture Tahins Mode 12 Aas SVr by 76 3ims tI from Salencid Release A Wy at 396ms 4 12 5 from Solenoid Release Norm M T 0 SECTION 3 MODEL 636 THEORY OF OPERATION 2 The Model 636 shares many of the features of the 635 and 640 Cameras Among these are Fixed Focus Lens Electronic Shutter Film Shade Lighten Darken Control Empty Pack Lockout Film Counter Carrying Strap and a Fill Flash Capability 13 One of the major differ
56. rkets in 1992 and 1993 and offers users the following features Close up lens for subjects 2 4 ft 0 6 1 2m from Camera An oval frame outline visible in the Viewfinder helps position subject correctly Depth of field 4 ft 1 2 m to infinity Built in fold down integral quench SPAR Strobe with 2 to 10 ft 0 6 to 3 0 m range in swing up housing Strobe charges automatically in 4 sec when erected Green strobe ready LED in rear of housing remains ON for about 30 sec Electronic logic for fill flash in outdoor brightness in approximate proportions of 75 ambient light and 25 strobe fill Uses 10 picture Polaroid 600 ASA 600 color film 1 Non flash button allows pictures to be taken without strobe firing e g through glass window Lighten Darken trim control for adjusting exposure or 3 4 stop When in L or D position double arrows are visible in Viewfinder as reminder to user Exposure control utilizing both ambient and IR light measurement Flash exposure control via IR quench full dissipation SPAR strobe Picture counter shows number of exposures remaining counts down Talking Camera version plays pre recorded message just before shutter opening to encour age subjects to smile Adjustable neck strap and on some models tripod socket SPECIAL NOTE 636 AF AUTOFOCUS CAMERA Model 636 AF Autofocus Camera from a service standpoint is similar to the 636 OneStep Close Up only i
57. s visible light which the human eye can see This light is used to time exposures for non flash fill flash and low light distant scene flash pictures The top filter is a photopic filter The bottom half of the filter passes infrared light which is invisible to the human eye but which the film can see This light is used to time exposures for flash pictures in low light where the subject is near the camera The bottom filter is called the infrared filter 30 go WHAT 37 Now you may be wondering why infrared measurements greatly reduce over or under exposures in close up flash pictures 100 000 INERARED WIBE L647 4000 1000 ANGSTROMS 38 This chart shows the light spectrum In the infrared region of the spectrum a strange phenomenon occurs The light reflected off just about all materials is equal Therefore the light passing through the infrared filter is balanced preventing the photocell from being fooled by contrasting levels of light or dark subject matter 31 PHOTOPIC TAKING FILTER APERTURE FIRST PHOTOPIG APERTURE 39 For Fill Flash pictures the shutter blades open as shown here The blades are set so only visible light passes through the first photopic aperture to the photocell Thus for Fill Flash exposure shutdown is based on the measurement of visible light only PHOTOPIC FILTER TAKING APERTURE FIRST PHOTOPIG APERTURE Co INFRARED INFRARED FILTER pag cad 40 In a
58. sassemble and install properly 10 Disassemble and install properly making certain interface with drive is OK 11 Replace flex Replace timing gear Repair or replace Adjust solenoid gap Examine battery wire Examine blades amp repair or replace as necessary Replace battery contacts Replace contact support block Replace solenoid Replace flex circuit PROBLEM PROBABLE CAUSE CORRECTIVE ACTION High Current Drain NOTE First determine whether problem is with strobe or camera Replace strobe with known good test strobe If operation is OK with test strobe problem is in original strobe which must be replaced If operation reveals high current drain with good test strobe problem is in camera Continue below 1 Switch contacts on block 1 Re form contacts or are distorted replace contact support block as necessary 2 Contact support block 2 Replace contact support defective block 3 Flex circuit defective 3 Replace flex circuit Strobe Failures NOTE First determine whether the problem is with the No Flash strobe or the camera Replace the strobe with a No Charge known good test strobe If operation is OK with LED stays on test strobe the problem is with the original strobe which must be replaced If operation reveals problems with good test strobe problem is in camera Continue below 1 SIO button and movable 1 Assemble camera S1O contact interface properly
59. shut down and the blades close either when the photocell has seen 100 of the light necessary for a proper exposure or when the clock times out at 396 ms 27 FAR 31 The different clock settings for Low Ambient conditions are called the DUAL TIME OUT SYSTEM They allow long time outs for distant low light scenes such as a sunset or an auditorium shot or limit the length of the exposure for close in scenes to minimize camera or subject motion SENSING N 32 So far we ve talked about the photocell measuring scene light to control the exposure but we haven t mentioned the most significant part of the light measurement system Infrared Sensing 28 33 In earlier cameras where a photocell was used to control the exposure the photocell could be fooled into giving a reading which did not result in a good picture 34 This was especially true of flash pictures taken of subjects close to the camera Light colored clothing would reflect too much light to the photocell causing it to stop the exposure too soon 29 35 On the other hand dark clothing would fool the photocell into timing out a long exposure since relatively little light was reflected back This would result in a washed out face PHOTOPIG FILTER INFRARED FILTER 36 To overcome this problem the Model 636 uses a photocell with a two part filter in front of it called a Dynamic Infrared Photometer system The top half of the filter passe
60. ssy Insulator 37 1 Remove Strobe Cover using removal tool 12633 Insert tool in hole on right side underside of Housing and tilt bottom of tool to the right CCW to release molded catch inside cover A in Fig 1 Repeat process on left side tilting bottom of tool to the left Lift off Cover P N 12633 Fig 1 Removing Strobe Cover De Discharge Strobe Capacitor by holding Dump Probe 11604 on Capacitor terminals for 5 10 seconds Fig 2 CAUTION SHOCK HAZARD Dump capacitor BEFORE proceeding with disassem bly to avoid painful shock from charged capacitor P N 11604 A ee y Fig 2 Discharging Strobe Capacitor with Dump Probe 38 3 With Strobe tilted downward at a 45 degree angle remove Lower Housing Assembly using a soldering aid tool greenstick Carefully spring out sides as shown in Fig 3 Flex remains connected to Lower Housing Fig 3 Removing Lower Housing Remove two Flex leads from PC Board by inserting appropriate size fingers of Universal Flex Tool 12601 into Board connectors and pulling Flex out Fig 4 P N 12601 Fig 4 Removing Flex from Lower Housing 39 Remove Flashtube Assembly from the Lower Housing by gently pushing in along top edge of Flash Shield Fig 5 Remove Insulator and unsnap catches on ends of Flash Shield to remove it from Flashtube Assembly Fig 5 Removing Flashtube Assembly Flash Shield and Insulator If it is necessary to rem
61. stem from Door SECTION 6 Camera Testing with the Star Tester OmANANDMNFWN KR Graywall setup Installing modified Strobe Fixture 12657B Aligning Camera on Horn with Tester window Installing risers under leveling legs Test setup and Horn Riser position Star Tester Controls amp Indicators Setup for 636 Graywall Test Removing 636 Front Plate Adjusting Blade Spring Replacing Front Plate w modified Front Plate Adjusting Ambient Calibration Disc Adjusting IR Calibration Wedge SECTION 7 Camera Testing with the B 600 Tester NAD BWNFR B 600 Tester and Model B Light Source Camera on Horn ready for testing Removing Front Plate Lens Panel Adjusting Opening Blade Spring Replacing Front Plate w modified Front Plate Adjusting IR Calibration Wedge Adjusting Ambient Calibration Disc iv Page 61 62 63 64 64 65 65 66 66 67 67 68 68 69 69 70 71 87 88 89 90 91 94 98 100 100 101 101 102 108 111 115 115 116 116 117 SECTION 1 MODEL 636 CAMERA GENERAL DESCRIPTION The Model 636 OneStep CloseUp Camera is an evolutionary reliable low cost design in the Polaroid 600 family of integral strobe fixed focus hardbody cameras It makes extensive use of the 640 Camera technology and has many derivative characteristics of the 630 and 635 Camera designs as well The 636 offers automatic exposure control fixed focus and rapid strobe recharge Model 636 was introduced in worldwide and U S ma
62. t Fig 2 into two openings on the tester Fig 2 For details of this modified fixture see Product Alert 600AM 92 30 dated 7 31 92 Be certain the fixture is fully seated Push adaptor firmly into two openings rte ZA m A e Modified Strobe Fixture 12657B Strobe Adaptor 12651 Fig 2 Installing modified Strobe Fixture 12657B 88 3 Erect the electronic flash of the Model 636 and place the camera on the Star Horn 12625 4 Set the horn with the mounted camera against the tester Using the leveling legs raise or lower the tester so that the electronic flash is aligned with and fits into the adapter window Figure 3 Flash must fit into strobe adaptor Use levelers to raise or lower tester Fig 3 Aligning Camera on Horn with Tester window 89 Remove the horn with mounted camera from the proximity of the tester Carefully tilt the tester and install two risers 12885 under the leveling legs Tilt the other side of the tester and install two more risers under the two remaining leveling legs Figure 4 2 oo os sche 6995 Moen VOLTS DTD OD wie EG ane SN urei essere oau QB n QD de g AO GUSH T amp j ay Gx maa AMOEUT GDO Grd D Oe 26 wou 1060 WATS Gr Gr eS TIMING pe VOLTS STOPS ERROR PA EZ i OC CORRENT Z S Risers 12885 Fig 4 Installing Risers under Tester s leveling legs 90 6 Place horn riser 12884 under the star
63. t interfaced properly S1 slider cam not mated Disassemble and to counter properly install properly S1 switch contacts Re form S1 contacts deformed closed with if possible Replace front door open check contact support with meter block if necessary Contact support block Replace contact defective support block Battery wire not Install battery wire trapped in contact properly support block properly Flex circuit motor Install flex motor contacts not seated contacts properly properly Counter spring defective Repair or replace or not loaded properly spring 79 PROBLEM PROBABLE CAUSE No Dark Slide Cycle 9 Battery contact height cont d marginal or not seated properly 10 Flex circuit defective No S1 response Defective S 1 button or S I slider S1 slider and contact support block not interfaced properly S1 switch contacts de formed do not close Poor connection between flex circuit and solenoid S9 is closed check with meter NOTE In this failure camera will cycle but blades remain closed Solenoid defective should read 2 to 3 ohms Continuous Cycle Pack pawl override Camera ejects film continuously Solenoid gap incorrect Shutter blades binding a Foreign matter on blades b Blades distorted c Blades not attached to walking beam Blade guide pin in shutter baseblock broken Shutter latch binding
64. t fire the flash 3 Press the tester RESET button 4 Cover the photocell and press S1 to make an ambient exposure Ignore the readings 5 Cover the photocell and press SI S10 to take a flash exposure Record the reading shown on the Timing meter and compare it to the specification 6 Repeat steps 2 3 4 and 5 two more times to insure accurate readings 7 Ifthe readings are not within the specifications refer to the Adjustments section SUMMARY 1 Selector to 640 Flash Timing 2 Press S10 to charge flash 3 Press Reset 4 Cover cell press S1 for ambient exposure Ignore readings 5 Cover cell press S1 S10 for flash exposure Record reading on Timing Meter Compare to spec 6 Repeat 2 3 4 amp 5 two more times 7 If readings are out of spec see Adjustments 96 Model 636 Ambient Exposure This test measures the energy on the film plane during an ambient exposure The Tester provides a constant 100 candles square foot scene brightness NOTE The following procedure assumes the Tester is on and the camera is installed on the horn in front of the Tester light source DETAILED TEST PROCEDURE SUMMARY 1 Turn the Selector Knob in the l Selector to Ambient 600 No middle of the panel to Ambient close up lens setting 600 Be certain the close up lens is not in position 2 With the photocell uncovered 2 Cell uncovered press S1 for press S1 only to take an ambient exposure ambie
65. the fill flash sequence TN LOW LIGHT FLASH 19 FIRED AT 74M5 9 The sequence for low ambient conditions begins identically to the fill flash sequence The flash is charged via S10 and the shutter blades open the same way However the flash is fired by the internal clock reaching 74 ms rather than by the photocell light measurement This happens because there is relatively little light passing through to the photocell NAR 10 Next the camera logic asks whether the subject is NEAR or FAR This information is needed to properly set the electronics for low ambient pictures 7 11 12 LESS THAN 50 MORE THAN A 507 NEAR FAR CONDITION CONDITION The camera determines whether the subject is NEAR or FAR by measuring the amount of light reflected back to the photocell 2 milliseconds after the flash has fired 76 ms into the exposure sequence If the measurement is more than 50 of the total needed for a proper exposure the camera decides the subject is NEAR If the subject is NEAR the electronics sets the clock to time out at 124 ms RL a eae IN LOW LIGHT NEAR EXPOSURE WILL END AT 100 OR 124 ms In a low light NEAR picture the blades open partially so that the photocell is measuring infrared light through the infrared filter The flash is quenched and the shutter blades closed either when the photocell sees 100 of the light needed for a proper exposure or when the internal clock reaches 124 ms
66. ure accurate readings 8 IfZLS Recycle Time or Amp Seconds are not within specific ation replace the strobe 99 SUMMARY Selector to ZLS No close up lens Erect flash open door install door pawl closure Install camera on horn Align to Tester Press Reset Cover photocell press S1 S10 to fire flash Record reading on ZLS meter Also check recycle time and current drain Compare readings to spec Repeat 4 5 amp 6 two more times If readings are out of spec replace strobe F Camera Adjustments correcting out of spec test results This section describes adjustments which can be made to correct readings which are out of specification on the Star Tester 12650 2 Refer to the Specification Chart to determine acceptable readings for each of the tests listed below 1 Flash Timing a Remove the Front Plate Lens Panel from the apron Fig 8 amp Using tweezers grasp the end of the opening blade spring c Move the opening blade spring up in the rack to increase the reading or down in the rack to decrease the reading Fig 9 d Reassemble and retest the camera Readjust the opening blade spring if necessary If the adjustment cannot bring the reading into specification replace the opening blade spring and repeat step 3 e If the reading is still out of specification disassemble the camera to the shutter level Examine the shutter area for loose or misplaced parts binding blades etc
67. ystem is used to check exposure and timing related parameters on 600 line cameras The electronics unit Fig 1 houses the circuits needed to set the parameters and to display test results The Model B light source provides the light levels required for ambient expo sure measurements The chart below shows the function of each of the controls and indicators on the electronics unit Following the chart are the pretest and test procedures Note that the test procedures are set up with detailed instructions in the left column and a summary in the right column Once you have become familiar with the test procedures occasional reference to the summary should be all that is necessary to properly test 636 cameras KEY CONTROL INDICATOR FUNCTION 1 Power Switch ON OFF Switch provides line voltage to Tester A built in lamp lights when the switch is ON 2 Camera Current Meter Provides readout of camera DC current during a camera cycle 3 Test Selector Switch Used to select the various test modes 4 Stops Error Meter Provides digital readout of test results Reading is in stops error 5 Normal Midcycle Switch Provides for a complete cycle or midcycle of a camera on the horn 6 Horn Connector Provides the electronic interface between the B 600 horn and the electronics unit 7 BB Error LED Provides a visual check of blade bounce error in Model 610 620 cameras 8 Strobe Detector Provides electronic interface between Strobe Flash Detector connect

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