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 TM 9-2920-225-34
FRAME 4
CAUTION
Do not use a battery or test lamp to make a continuity
test. Reverse battery connection will burn out diodes
instantly .
NOTE
On ohmmeters that use one 1 1/2-volt dry cell, low
resistance readings will be approximately 20 to 30 ohms.
On ohmmeters that use a 3-volt dry cell, low resistance
readings will be approximately 10 to 15 ohms.
Positive rectifier (1) has a coating of epoxy for in-
sulation.
Check resistance of positive rectifier (1). Touch positive test probe of
1.
multimeter to checkpoint one (2) and negative test probe to each of three
rectifiers (3, 4, and 5). Ohmmeter must show low resistance when negative
test probe is touched to each rectifier.
2. Check resistance of negative rectifier (6). Touch negative test probe of
multimeter to checkpoint two (7) and positive test probe to each of three
rectifiers (8, 9, and 10). Ohmmeter must show low resistance when positive
test probe is touched to each rectifier.
3. If rectifiers (3, 4, 5, 8, 9, and 10) do not have low resistance, get new ones.
END OF TASK
TA 103608
2-108
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