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Page Title:
Isolating Troubles In Electrical Equipment Cabinet 2A15 |
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|  TM 11-5820-695-35
Connect multimeter leads between
Multimeter indication
Section
Step
pin
and
pin
(ohms)
8
a
2A16W1XA12A-6
2A16W1P1-J
Zero
b
-6
2A16W1XA5-12
Zero
c
-7
2A16WlXAS-14
Zero
d
-12
2A16W1P1-V
Zero
e
-18
2A16W1XA11-9
Zero
f
-17
2A16W1P1-K
Zero
9
a
2A16W1XA12B-1
2A16W1P1-G
Zero
b
-2
-H
Zero
c
-5
-J
Zero
d
-6
-f
Zero
e
-7
-e
Zero
f
-8
-b
Zero
g
-9
-a
Zero
h
-10
-Z
Zero
i
-11
-Y
Zero
j
-14
-d
Zero
k
-15
-c
Zero
l
-16
-E
Zero
m
-17
-F
Zero
n
-29
-g
Zero
o
-30
-h
Zero
b.
Procedure.
3-17. Isolating Troubles In Electrical Equipment
Cabinet 2A15
(1)
Refer to the chart (c below). Connect
the multimeter leads between the two pins of the listed
WARNING
steps of the sections that were referenced in the
115 vac is present in R-1467(P)/GRC-
troubleshooting chart (para 3-12b).
If the
144(V) Do not perform any of the
troubleshooting chart indicates a section but does not
continuity or resistance checks given
give a step number, perform all of the steps given in
in
this
paragraph
while
the
that section starting with step a.
equipment is connected to the
primary power source.
(2)
Observe that multimeter indication is
within the tolerance specified in the chart for each step.
a.
Preparation of R-1467(P)/GRC-144(V).
If it is not, refer to the R-1467(P)/GRC-144(V)
(1) Remove power supply 2A1 (para 3-40).
interconnecting diagram (fig. 5-21) and determine
whether the fault is defective wiring or a defective circuit
(2) Remove
electrical
element.
synthesizer 2A14 (para 3-49).
(3) Disconnect plug 2A15W2P2 (fig. 3-19)
from J3 on rear of tunnel diode amplifier 2A2.
c.
Electrical Equipment Cabinet 2A15 Checks
Disconnect plug 2A16W1P1 (fig. 3-18) from jack
Chart.
2A15W2J1, (fig. 3-19).
Connect multimeter leads between
Multimeter indication
Section
Step
pin
and
pin
(ohms)
1
a
2A15W2J1-A
2A15W2XA1-1
Zero
b
-B
-20
Zero
c
-C
-3
Zero
d
-D
-22
Zero
e
-E
-5
Zero
f
-F
-24
Zero
g
2A15W2J1-G
2A15W2XA1-7
Zero
h
-H
-26
Zero
i
-J
2A15E2 (CAB GRD)
Zero
j
-N
2A15A2S1B-15
Less than 1K
k
-P
2A15A2S1A-17
Zero
I
-R
2A15AS1B-17
Zero
m
-S
2A15AS1B-23
Zero
n
-T
2A15AS1B-19
Zero
o
-U
2A15AS1A-21
Zero
p
-V
2A15AS1B-25
Less than 1K
Change 6 3-29
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