Section V. LINKAGE ASSEMBLY TEST THEORY

TM 9-4931-363-14&P

c. Refer to step 2 in figure 2-5 and in the linkage

2-9. General.

assembly test table. Setting S9 to R3 connects the output

of B1-R3 through J5-45, through contact 8 and wiper 2 of

The following reference materials are required to

S7-D, through contact 5 and wiper 1 of S4-H, through

support the linkage assembly test theory discussions:

contacts 1 and 3 of S9, and through S5-A to the meter and

phase detector for display.

a. L i n k a g e a s s e m b l y

test table from TM

9-1270-212-14&P

d. Refer to step 3 in figure 2-5 and in the linkage

assembly test table. Setting S7 to position 2 connects the

b. Linkage assembly foldout schematic diagram from

buffer amplifier through J5 to resolver B2 of the linkage

TM 9-1270-212-14&P

arm under test. With S9 in position R2, the R2 output of

the resolver is displayed on the meter and by the phase

detector lights.

c. Linkage assembly test functional diagram (fig. 2-5).

e. Refer to step 4 in figure 2-5 and in the linkage

2-10. Linkage Assembly Test Theory.

assembly test table. Setting S9 to R3 connects the R3

output of resolver B2 of the linkage arm under test to the

a. To prepare for the linkage assembly test theory

meter and phase detector for display.

discussion, refer to the linkage assembly checkout

procedures in TM 9-1270-212-14&P and mentally perform

f. Refer to step 5 in figure 2-5 and in the linkage

steps a through f.

assembly test table. Setting S7 to position 3 connects the

buffer amplifier through J5 to resolver B3 of the linkage

arm under test. With S9 in position R2, the R2 output of

b. Refer to step 1 in figure 2-5 and in the linkage

the resolver is displayed on the meter and by the phase

assembly test table. Wiper 1 and contact 5 of S4-A connect

28 volts dc to pin 4 of buffer amplifier AR1 and through

detector lights.

wiper 1 and contact 2 of S7-A to K6, energizing K6.

g. Refer to step 6 in figure 2-5 and in the linkage

Contacts 4 and 5 of K6 connect 5 volts ac, phase angle 0

degrees, to pin 14 of AR1. Contacts 1 and 2 of K6 connect

assembly test table. Setting S9 to R3 connects the R3

10 volts ac, phase angle 0 degrees, to pin 6 of AR1. The five

output of resolver B3 of the linkage arm under test to the

outputs of the buffer amplifier are connected as shown in

meter and phase detector for display.

figure 2-5 through banks A, B, and C of S7 and through test

connector J5 to the linkage arm under test. The R2 output

h. Refer to step 7 in figure 2-5 and in the linkage

of resolver B1 in the arm is connected through J5-49,

assembly test table. Setting S7 to position 4 connects the

through contact 2 and wiper 1 of S7-D, through contact 5

buffer amplifier through J5 to resolver B4 of the linkage

and wiper 1 of S4-I, through contacts 2 and 3 of S9 set to

arm under test. With S9 in position R2, the R2 output of

position R2, and through contact 2 and wiper 1 of S5-A to

the resolver is displayed on the meter and by the phase

XA2-41 of phase detector card A2, and through contact 8

detector lights.

and wiper 2 of S5-A to TB1-3. The meter displays the

i. Refer to step 8 in figure 2-5 and in the linkage

amplitude of the signal and DS19 or DS20 lights to indicate

the phase of the signal. The linkage return signals are

assembly test table. Setting S9 to R3 connects the R3

connected to ground through contact 5 and wiper 1 of

output of resolver B4 of the linkage arm under test to the

S4-K.

meter and phase detector for display.

2-15