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Page Title:
Isolating Troubles In Power Supply Chassis Assembly 2A1A5 |
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|  TM 11-5820-695-35
Connect multimeter leads between
Multimeter indication
Section
Step
pin
and
pin
(ohms)
i
-4
2A15WZP2-E
Zero
j
-23
2A15W2P2-F
Zero
3
a
-5
2A16W1XA12B-16
Zero
b
-24
2A16WX1A12B-17
Zero
4
c
-7
2A16W1XA12B-1
Zero
b
-26
2A16W1XA12B 2
Zero
c
-8
2A15A2XDS6-G
Zero
d
2A15W2XA1-27
2A16E2 (CAB GRD)
Zero
e
-19
2A16E2 (CAB GBD)
Zero
(1)
Refer to the chart (c below). Connect
3-15. Isolating Troubles In Power Supply Chassis
the multimeter leads between the two pins of the listed
Assembly 2A1A5
steps of the sections that were referenced in the
a.
Preparation
of
Power
Supply
Chassis
troubleshooting chart (para 3-12b). If the trouble-
Assembly 2A1A5.
shooting chart indicates a section but does not give a
(1)
Remove power -supply 2A1 (para 3).
step number, perform all of the steps given in that
section starting with step a.
(2)
Remove plug-in components 2A1A1
through 2A1A4
(TM 11482095-12).
(2)
Observe that multimeter indication is
within the tolerance specified in the chart for each step.
(3)
Remove the four screws and
If it is not, refer to the power supply 2A1 interconnecting
associated washers that secure the rear shield (fig. 3-22)
diagram (fig. 5-22) and determine whether the fault is
to power supply chassis assembly 2A1A5. Remove the
defective wiring or a defective circuit element.
rear shield.
c.
Power Supply Chassis Assembly 2A1A5
b.
Procedure.
Checks Chart.
Connect multimeter leads between
Multimeter indication
Section
Step
pin
and
pin
(ohms)
1
a
2A1AMP-1
2A1A5J1
1.1M 55K
b
-1
2A1A5XA1-7
Zero
c
-1
2A1A5XDS1-1
470 4?7
d
-1
2A1A5XA1-13
Zero
e
-12
-14
Less than 1
f
-20
-8
Zero
g
-20
2A1A5XDS1-2
Zero
h
-31
2A1A5XA1-15
Zero
2
a
2A1A6P1-6
2A1A5J2
604K 6K
b
-3
2A1A5P1-4
Zero
c
-3
2A1A5XA2-5
Zero
d
-3
2A1A5XDS2-1
220 22
e
-3
2A1A5XA2-13
Zero
f
-14
2A1A5XA2-14
Less than 1
g
-22
2A1A5XDS2-2
Zeao
h
-22
2A1A6XDS2-8
Zero
i
-23
-9
Zero
j
-33
2A1A5A2-15
Zero
3
a
2A1A5P1-5
2A1A5J3
475K 4.7K
b
-5
2A1A5XDS3-1
150 15
c
-5
2A1A5XAS-8
Zero
d
-16
-14
Less than 1
e
-24
-3
Zero
f
-24
-13
Zero
g
-24
2A1A5XDS3-2
Zero
h
-35
2A1A5XA3-15
Zero
4
a
2A1A5P1-7
2A1A5J4
1.1M 56K
b
-7
2A1A5XA4-7
Zero
e
-7
2A1ASXDS4-1
470 47
3-27
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