Polaroid SX70 manual Manual Function Test Sequence

Page 41

MANUAL FUNCTION TEST SEQUENCE

Test Mode

Action

Shutter Response

S6/S7

Close S6/S7

No reaction (Blades open, motor off)

Press and release S1 button to check for mechanical binding. Observe current drain.

AMBIENT Exposure

Remove flash array from

 

Mode

shutter.

 

 

Close S1

Blades close; motor runs

 

Open S5

Blades close; motor brakes

 

Open S1

Blades close; motor brakes (no reaction)

 

Open S3

Blades open then close; motor runs (exposure

 

 

time dependent on amount of light to seen by

 

 

photocell)

 

Close S3

Blades close; motor runs

 

Close S5

Blades open; motor brakes

 

 

 

S8 Dark Slide eject mode

Close S8

Blades open; motor brakes (no reaction)

 

Close S6/S7

Blades close; motor runs

(Flash Array inserted)

Open S5

Blades close; motor runs

 

Open S3

Blades close; motor runs; no flash

 

Close S3

Blades close; motor runs

 

Open S8

Blades close; motor runs

 

Close S5

Blades open; motor brakes

 

 

 

Flash Mode - flash array

Close S1

Blades close; motor runs

inserted into shutter

Open S5

Blades close; motor brakes

 

Open S1

Blades close; motor brakes (no reaction)

 

Open S3

Blades open then close (small aperture) flash

 

 

fires; motor runs

 

Close S3

Blades close; motor runs

 

Close S5

Blades open; motor brakes

 

Open F1 thru F5

Bulbs fire insequence

 

consecutively, repeating

 

 

above test between each

 

 

switch opening.

 

S9 - Empty film pack

Close switches F1 thru F5

 

mode

Close S9

Blades open; motor brakes (no reaction)

 

Close S1

Blades close; motor runs

 

Open S5

Blades close; motor brakes

 

Open S1

Blades close; motor brakes (no reaction)

 

Open S3

Blades open then close (fixed time) no flash;

 

 

motor runs

 

Close S3

Blades close; motor runs

 

Close S5

Blades open; motor brakes

Image 41
Contents Page Page General Description DescriptionOpening the Camera Camera OperationStarting the Automatic Mechanism Loading the Film packViewing and focusing Setting the exposure counterViewing and shooting Developing the print Exposures using flashCompleting the film pack Closing the camera Shutter Description Ambient Light Mode11 a Location & Arrangement of internal parts Shutter Description Flash Mode Page 14 S5 being opened by the recock ram Gear train Page Introduction Power SourceLens Viewing and Exposing SystemViewfinder optics exposing Fresnel Figures 2-3 a and 2-3 BFresnel screen Mirrors ViewfinderFlare baffle Camera Elctronics 1. GeneralSX-70 Switch locations Switch functionsS3 Being opened by recock ram S4 Switch operating configurations Function Sequence Switch Function TablePage Flash Timing Sequence Chart Shutter, exploded view Shutter Mechanical Details FigureA Solenoid S2 operation Sequence of Operations Film Processing ComponentsPage Max Introduction Initial Tests III TroubleshootingSX-70 Cmaera Repair Inspection Procedure Test Equipment Operation Power supply and pack simulator FigureLocation of new collimator target Collimator FigureDisengaging the idler gear Comprehensive tester Comprehensive Testers -6Model B Camera tester Model B Camera Tester Light Leak Tester Figure Comparalumen Light Levels TableLight leak test system Flash Simulator Board Figure10 Manual camera tester Manual Function Tester FigureManual Function Test Sequence Exit Pupil Test Optical System13 Aligning the exit pupil gage Entrance Pupil TestConcave Mirror Distortion Check USE of Analysis ChartsFresnel Quality Check Collimation16 Fresnel standards chart 18 Flex circuit terminal locations Camera/Shutter Isolation19 Test points on SX-70 shutters Camera Analysis ChartsPage Removal Front COVER/SPREAD Roll AssemblyInstallation Front cover hinge studs Repairs / Adjsutments Loose Front CoversBending the stop latch Replacing the Light Shield Cam Interference Between Front and Bottom CoversTop Spread Roll Looseness Front cover light shield cam Mirror Cover / Boot AssemblyBoot retaining screws