TB-9-2920-225-34-1
100 AMP REGULATOR
TECHNICAL BULLETIN; CHECKOUT AND REPAIR PROCEDURES
NOVEMBER 1981
TB-9-2920-225-34-1 - Page 24 of 70
TB 9-2920-225-34-1
Table 2-7. Substitutes for transistor Q5–.Model O4
2-18
Figure 2-13. Relay location-model 04.
Table 2-7. Substitutes for transistor Q5–Model 04—
continued
If the regulator still does not function correctly
it will be necessary, if local skills permit, to test
each component. All the parts should be checked
with an ohmmeter and the capacitors checked
with a capacitance meter. The circuit board traces
should rechecked with an ohmmeter to make sure
that there are no cracked traces. Traces with hair-
line cracks will show good at lower temperatures
and will tend to show open circuit at higher tem-
peratures. If the board seems good at room tem-
perature, but the regulator still fails, this could
be the cause.
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