TB-9-2920-225-34-1
100 AMP REGULATOR
TECHNICAL BULLETIN; CHECKOUT AND REPAIR PROCEDURES
NOVEMBER 1981
TB-9-2920-225-34-1 - Page 15 of 70
TB 9-2920-225-34-1
Figure
2-8.
Test points–model 03.
d. Relay.
(1) Place ohmmeter probes across relay coil
terminals (see fig. 2-5). Meter should read ap-
proximately 60 ohms.
(2) Place ohmmeter probes across contactor
terminals (see fig. 2-5). Meter should read infinity
(open circuit ).
(3) If other readings are obtained, replace
relay with NSN 2920-00-735–9542.
e. Detailed Circuit Checks.
(1) Table 2-2 contains
“power off”
resist-
ance checks of the circiut (see figs. 2–6 and 2–8
for test points).
(2) Table 2-2 contains
“power on”
voltage
checks of the circuit (see figs. 2-6 and 2-8 for test
points).
f. Functional Check.
Check the performance of
the regulator on the test stand and make final
voltage adjustments. Voltage output should read
28 volts. If the regulator does not function prop-
erly, perform the following:
(1) Check wires and connections.
2-9
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