TM 55-1520-240-23-7
9-153.1
TEST DUAL HOOK RELAY BOX (AVIM)
9-153.1
INITIAL SETUP
Applicable Configurations:
All
Tools:
Electrical Repairer’s Tool Kit, NSN 5180-00-323-4915
Power Supply, 28 VDC
Multimeter
Materials:
None
Personnel Required:
Aircraft Electrician
Inspector
References:
TM 55-1500-323-25
Equipment Condition:
Off Helicopter Task
1.
Perform continuity checks as listed:
NO BREAK - WORK HARDER
Receptacle
Pins
Meter
Reading
J2
R and B
Continuity
J2-a and J1-E
Continuity
J2
L(+) and b(-)
No Continuity
J1
B and E
No Continuity
J2
C and b
No Continuity
J1
G and D
No Continuity
J2
V and Y
No Continuity
J2
V(+) and A(-)
No Continuity
J2
V and W
No Continuity
J2
V and U
No Continuity
NOTE
Once a power connection is made,
keep power applied until told to
disconnect it.
2.
Apply 28 vdc to J2-D and ground to J1-B.
a.
There shall be 0 vdc across F(+) and B(-)
of J1.
b.
There shall be 0 vdc across C(+) and B(-)
of J1.
c.
There shall be 0 vdc across J2-G(+) and
J1-B(-).
3.
Apply 28 vdc to J2-J and J1-A and ground to Z of
J2. There shall be 28 vdc across F(+) and B(-)
of J1 and indicator light DS3 (1) shall come on.
4.
Apply 28 vdc to N of J2.
a.
There shall be 28 vdc across C(+) and B(-)
of J1.
b.
There shall be no continuity between R and
B of J2.
5.
Apply 28 vdc to L of J2.
a.
There shall be 28 vdc across J2-G(+) and
J1-B(-).
b.
There shall be 28 vdc across J2-b(+) and
J1-B(-).
9-624
