Neon Indicator; Recycle Time; Full Power Light Output Check; Main Capacitor Leakage Test - Vivitar 283 Service Manual

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Automatic Electronic Flash
Model 283
D. If the leakage current is greater than 1mA, main capacitor C1 should be replaced .
330
voe
Power Supply
Resistor
1 K Ohm
1%, 2W
Switch
Closed
Capacitor
1100mFd.
330WV
Figure 4-3. Main Capacitor Leakage Test
4.2.6 NEON INDICATOR.
The neon indicator NE1 should light when the voltage across the main capacitor
C 1 reaches the following potential:
For units whose serial number has the first 3 digits
below 606
above 606
240VDC
+
15VDC
260VDC
+
1 OVDC
4.2.7 RECYCLE TIME.
The time to recycle to the neon indicator voltage (given in paragraph 4.2.6) will de·
pend on the operational mode and the type of power supply.
Table 4-1. Recycle Time
Power Supply Mode Recycle Time (seconds)
DC, batteries
NiCad, fully charged Manual 4 to 5
Auto
0.5 to 5
Alkaline, fresh Manual 7 to 9
Auto 0.5 to
9
HVP
Manual
2 to 3
Auto 0.5 to 3
AC, with SB-4 adaptor Manual 8
Auto
0.5 to 7
4.2.8 FULL POWER LIGHT OUTPUT CHECK.
If components that may affect the light output have
been replaced, or there is some question concerning this check it with a pulse photometer. In the manual
mode, full power output at the rated Guide Number should be 277 lux-seconds. The allowable variation,
however, can be minus an f -stop,or as low as 138 lux -seconds, when .measured 10 feet from the photo-meter
sensor.
Vivltar 37460596 (11/80)
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