Polaroid SX70 manual Manual Function Tester Figure, Manual camera tester

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c. Install the flash simulator board into the camera flashbar socket in the same way as a flashbar would be installed .

d. Press the red exposure button, S1. e. Observe that LED #1 flashes.

f. Flip switch S1 up.

g. Press the red exposure button. h. Observe that LED #2 flashes. i. Flip switch S2 up.

j. In like manner, continue pressing the red exposure button and flipping the corresponding switches up until all five lights have flashed.

k. Repeat step d. though j. The lights should flash five more time.

l. Press S1.

m. Observe that no light flashes. This confirms proper operation of S9.

6. Manual Function Tester (Figure 3-10).

NOTE : The Manual Fucntion Tester #11959 is updated version of the Camera Back Simulator #11775. The basic difference between the two pieces of test equipment is that the simulator relies on an external power supply while the

function tester ahs a built-in power supply. The steps listed in paragraph b., Test, apply to both units. Remember, if the shutter tests satisfactorily at 5 volts, the test must be repeated at 6.4 volts.

Set up.

(1)Using a VOM, check for shorts on the shutter before setting it on the tester. (Not necessary for plastic base shutter.) Check between + and - points on the substrate and the casting. There must be no shorts.

(2)Set power supply to 5.0 volts. (If simulator is being used, connect to power supply, set supply to 5.0 volts and switch supply from VOLTS to AMPS.)

(3)CLOSE tester switches : S2, S3, S5, F1 thru F5.

(4)OPEN tester switches : S1, S6/S7, S8, S9.

(5)Clamp shutter cable in the connector and insert flash bar connector into the shutter FFA.

(6)Set shutter lens to 10.4’’ and trim wheel to full dark.

(7)Proceed with testing as indicated in table below. If shutter tests ok at 5.0 volts, retest at 6.40 volts.

Figure 3-10 Manual camera tester

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Contents Page Page Description General DescriptionCamera Operation Opening the CameraLoading the Film pack Starting the Automatic MechanismSetting the exposure counter Viewing and focusingViewing and shooting Completing the film pack Exposures using flashDeveloping the print Shutter Description Ambient Light Mode Closing the camera11 a Location & Arrangement of internal parts Shutter Description Flash Mode Page 14 S5 being opened by the recock ram Gear train Page Power Source IntroductionLens Viewing and Exposing SystemFresnel Figures 2-3 a and 2-3 B Viewfinder optics exposingFresnel screen Viewfinder MirrorsFlare baffle Camera Elctronics 1. GeneralSwitch functions SX-70 Switch locationsS3 Being opened by recock ram S4 Switch operating configurations Switch Function Table Function SequencePage Flash Timing Sequence Chart Shutter Mechanical Details Figure Shutter, exploded viewA Solenoid S2 operation Film Processing Components Sequence of OperationsPage Max III Troubleshooting Introduction Initial TestsSX-70 Cmaera Repair Inspection Procedure Power supply and pack simulator Figure Test Equipment OperationCollimator Figure Location of new collimator targetDisengaging the idler gear Comprehensive Testers -6 Comprehensive testerModel B Camera tester Model B Camera Tester Comparalumen Light Levels Table Light Leak Tester FigureFlash Simulator Board Figure Light leak test systemManual Function Tester Figure 10 Manual camera testerManual Function Test Sequence Optical System Exit Pupil TestEntrance Pupil Test 13 Aligning the exit pupil gageUSE of Analysis Charts Concave Mirror Distortion CheckFresnel Quality Check Collimation16 Fresnel standards chart Camera/Shutter Isolation 18 Flex circuit terminal locationsCamera Analysis Charts 19 Test points on SX-70 shuttersPage Installation Front COVER/SPREAD Roll AssemblyRemoval Repairs / Adjsutments Loose Front Covers Front cover hinge studsBending the stop latch Top Spread Roll Looseness Interference Between Front and Bottom CoversReplacing the Light Shield Cam Mirror Cover / Boot Assembly Front cover light shield camBoot retaining screws