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 TM 5-1940-277-20
TM 1940-20/2
4.
Check resistance between diode terminals by doing the five tests listed in the table below.
NOTE
(-)
in table is multimeter negative lead
(+)
in table is multimeter positive lead
NOTE
Example shown is Test No. 1.
Look at multimeter while doing each test.
5.
If all test readings match the readings listed, the blocking diode is good. Reconnect wires and go to step 6.
If any test reading is different from reading listed under "Multimeter Reading Should Be", the blocking diode is
bad. Go to step 7.
Trouble is not in blocking diode. Go back to troubleshooting procedures for next instruction.
6.
7.
Replace blocking diode (refer to paragraph 3-109).
3-234
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