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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Polaroid SX70 manual Manual Function Tester Figure, Manual camera tester