Polaroid SX70 manual Test Equipment Operation, Power supply and pack simulator Figure

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Figure 3-1 Film pack simulator and power suplly

C. TEST EQUIPMENT OPERATION

Checkout the SX-70 camera requires the use of several pieces of test equipment. The purpose of this section is to instruct you in the proper use of this equipment.

1.Power supply and pack simulator (Figure 3-1)

In use the system subsitutes for the film pack, giving a steady, reliable source of power.

a.Plug the pack simulator into the power supply being careful to observe polarity (ground is negative).

b.Set the power supply switch to VOLTS and turn the supply ON.

c.Adjust the output to the desired volatge (5.8v normal).

NOTE : Except on Lafayette-made units, the power supply mete is not adequate to set the voltage. Use an external meter (VOM or VTVM) to make this setting.

Figure 3-2 SX-70 Collimator

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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 Developing the print Exposures using flashCompleting the film pack 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 Removal Front COVER/SPREAD Roll AssemblyInstallation Repairs / Adjsutments Loose Front Covers Front cover hinge studsBending the stop latch Replacing the Light Shield Cam Interference Between Front and Bottom CoversTop Spread Roll Looseness Mirror Cover / Boot Assembly Front cover light shield camBoot retaining screws