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Page Title:
Section III. UNIT TROUBLESHOOTING |
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|  Section III. UNIT TROUBLESHOOTING
(TM 11-5820-222-20).
Circuits for Short Circuits
(2) For the B+ or bias short-circuit
a. When to Check. When any of the fol-
tests, disconnect P1001 (AN/VRC-
lowing conditions apply, check for short
24) or P1051 (AN/TRC-68) (fig. 83).
circuits and clear the troubles before
(3) For filament short circuit tests:
(a) Disconnect plugs P1201, P101,
applying power.
(1) When the rt unit is being serviced
P301, P201, P401, P501, P801,
and P1001 for the AN/VRC-24, or
apart from other units of Radio Set
/ AN/VRC-24 or AN/TRC-68 and the
P1051 for the AN/TRC-68 (fig.
defect is unknown.
83).
(b) Remove the dial lamps.
(2) When blown fuses are reported
(c) Turn the SQUELCH control to
from the operational tests.
b. Conditions for Tests. Prepare for
OFF.
(d) Remove all tubes except V106.
short-circuit tests as follows:
c. Measurements. Make the resistance
(1) Remove the rt unit from its case
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