TM 55-4920-414-13&P
4-22. Troubleshooting & Repair (ATST).
nent replacement procedures. Test equipment required are
listed in Table 4-4. Test box cable assemblies are shown in Fig-
Paras 4-22 and 428 contains general repair information, main-
ures 4-10,4-11, and Test Box exploded view Figure 4-12.
tenance instructions, troubleshooting procedures and compo-
Table 4-4. Test Equipment
Common Name
Manufacturer and Model
(part number)
AUTOTRANSFORMER
General Radio, Model W1OMT3AS3 (7910809) or equivalent
DC POWER SUPPLY
NJE, Model CS36CR30D2 (7907346-2) or equivalent
DIGITAL VOLTMETER
Tektronix, Type DM501A (DM501A) or equivalent
ADAPTER
Single banana jack to pin plug (black) (7907528)
ADAPTER
Single banana jack to pin plug (red) (7907517)
LEAD
24-in., No. 18; single banana plug (black) (7907498)
LEAD
24-in., No. 18; single banana plug (red) (7907497)
LEAD1
Miniature pin jack with 12-in., No. 16 wire attached (fabricate locally)
LEAD2
Pin jack to single banana plug (7921032)
Two required.
Three required.
Table 4-5. Test Box Wiring Run List
FROM
A1-E6
A1-E16
AI-E25
A1-E38
A1-E38
A1-E44
A1-E45
A1-E56
A1-E58
A1-E58
A1-E59
A1-E60
A1-E60
A1-E62
CB1-1
TO
R1-3
R1-1
R1-2
P4-A1
PS1-5
P4-A14
J3-A
J3-G
PS1-4
J3-D
J7
PS1-6
J8
S4-2
J2-C
WIRE NUMBER
24A22
25A22
23A22
8C22
8B22
1A22
17A22
18A22
10A22
10D22
8G22
7A22
FROM
J3-F
J3-G
J3-H
J3-J
J3-K
J3-N
J3-P
J3-R
J4
J5
J6
J6
TO
S4-4
A1-E56
J8
J9
J5
TB1-3
XDS4-1
XDS3-1
J3-E
J3-K
J7
El
7B22
J6
PS2-5
14A22
J7
J6
1A20
J7
P4-A15
WIRE NUMBER
15A2Z
18A22
7C22
10C22
20A22
11F22
21A22
19A22
20A22
8E22
8H22
8D22
8E22
8F22
4-18
