Transformers; 02 Resistance Readings; T1 Resistance Readings - Vivitar 283 Service Manual

Automatic Electronic Flash
Model 283
B. 02 2SA564 - 2SA1115
Resistance readings between leads. Lead with positive probe is marked (+).(Table 4-5)
Table 4-5. 02 Resistance Readings
OHMS (APPROX.)
E
LEADS In Circuit Out of Circuit
c
B
E
to
B(+) 20 20
B
E(+) to B 1000 No Reading
2SA564
B(+) to
c
20 20
B
B to
C(+)
3000
CXl
c
c
to E{+)
CD
E
2SA1115
C(+) to
E
CXl
E
c
E ·Emitter
C · Collector
B · Base
Voltage reading between leads. Unit in operat ion. All readings taken with Simpson Digital Multimeter,
Model 464. (Table 4-6 }
Table 4-6. 02 Voltage Readings
VO L TS (APPR OX.)
LEADS
Operating Recycling
Emitter 0.6 f luct. +2.25
Collector
O.V
ov
Base 0.6 fluct. +3.5V
4.3.3 TRANSFORMERS
A . OSCILLATOR TRANSFORMER T1 OSC V -283
Resistance readings between leads. Readings marked (+) show position of positive probe of meter.
Tolerance: 10% (Table 4-7)
Table 4-7. T1 Resistance Readings
OHMS (APPROX.)
3 2 1 4
L EADS In Circuit Out of Circuit
1 to 2 .3 .3
3 to 4 .7 .7
4
to 5 260 260
3 to 5 260 260
1 to
5(+)
260
1(+)
to 5 15,000
1 to 3 6
22
Vlvlter 374 60590 (11/80)
•
5