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Page Title:
Isolating Troubles in Power Supply Chassis Assembly 1A1A13 |
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|  TM 11-5820-695-35
Connect multimeter leads between
Multimeter indication
Section
Step
pin
and
pin
(ohms)
c
1A15W27XA1B-3
1A15W27XA12B-4
Zero
d
-22
1A15W27XA12B-5
Zero
3
a
1A15W27XA1B-7
1A15W27XA12B-6
Zero
b
-26
-19
Zero
e
-27
-37
Zero
4
1A15W27XA1B-8
1A15W27XA13B-36
Zero
5
a
1A15W27XA1B-10
1A15W27XA13B-38
Zero
b
-29
-39
Zero
6
a
1A15W27XA1B-11
1A15W27XA13B-34
Zero
b
-60
-35
Zero
7
a
1A15W27XA1B-12
1A15W27XA12B-1
Zero
b
-12
1A15W7J4-A
Zero
c
-47
1A15W27XA12B-2
Zero
d
-47
1A15W27J4-B
Zero
8
a
1A15W27XA1B-14
1A15W27J1-A
Zero
b
-14
1A15W27XA1B-7
Zero
c
-14
1A15W27J4-E
Zero
d
-33
1A15W27J1-B
Zero
e
-33
1A15W27XA12B-8
Zero
-33
1A15W2J4-F
Zero
9
a
1A15W27XA1B-15
1A15W27J1-C
Zero
b
-34
1A15W27J1-D
Zero
10
a
1A15W27XA1B-16
1A15A8XDS5-C2
Zero
b
-16
1A15W27XA13B-29
Zero
c
-16
1A15W27J1-E
Zero
d
-16
1A15W27J4-K
Zero
e
-16
1A15A8XDS10-G
Zero
f
-16
1A15A8XDS1-G
Zero
g
-16
1A15A8XDS14-G
Zero
h
1A16W27XA1B-16
1A15A8XDS18-G
Zero
i
-16
1A15A8XDS9-1
Zero
k
-16
1A15W27XA12B-2
Zero
I
-16
1A15W27J4-B
Zero
m
-35
1A15A8XDS-B2
Zero
n
-35
1A15E1
Zero
11
a
1A15W27XA1B-18
1A15W27J1-G
Zero
b
-37
-H
Zero
3-9. Isolating Troubles in Power Supply Chassis
(1) Refer to the chart (c below). Connect
Assembly 1A1A13
the multimeter leads between the two pins listed in the
steps of the sections that were referenced in the
a.
Preparation of Power Supply Chassis
troubleshooting chart (para 3-6 ). If the troubleshooting
Assembly 1A1A13.
chart indicates a section but does not give a step
(1) Remove power supply 1A1 (para 3-22).
number, perform all of the steps given in that section
(2) Remove plug-in components 1A1A1
starting with step a.
through 1A1A4, and 1A1A6 through 1A1A12 (TM 11-20-
(2) Observe that multimeter indication is
695-12).
within the tolerance specified in the chart for each step.
(3) Remove the ten screws and associated
If it is not, refer to the power supply 1A1 interconnecting
washers securing rear shield (fig. 3-9) to power supply
diagram (fig. 5-17) and determine whether the fault is
chassis assembly 1A1A13.
defective wiring or a defective circuit element.
b.
Procedure.
c.
Power Supply Chassis Assembly 1A1A13 (Checks Chart.
Connect multimeter leads between
Multimeter indication
Section
Step
pin
and
pin
(ohms)
1
a
1A1A13XA1-5
1A1A13J1
200K 2K
b
-5
1A1A13P2-2
Zero
c
-6
-21
Zero
3-13
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