Set up a multimeter to measure DC voltage.
Disconnect the CX-13061/U from J3 on the KY-57.
Locate pins N(+) and G(-) on the cable plug (P2) and measure the
voltage.
If the meter indicates no voltage, turn off and remove the RT
from the MT-1029 and disconnect the other end of the CX-13061/U
from J3 on the J-3513/U.
d. Test procedure 28. Measure continuity, through the CX-13061/U, from
pin H of P1 to pin N of P2 and from pin A of P1 to pin G of P2.
If the meter indicates infinite ohms on either measurement, the
CX-13061/U is bad. Send to COMSEC maintenance for repair.
If the meter indicates zero ohms, the CX-13061/U is good and the
J-3513/U is bad. Send J-3513/U to COMSEC maintenance for repair.
e. Test procedure 29. If when performing TP1, the meter indicates 22-
30 volts DC between pins N and G on the CX-13061/U P2.
Reconnect the CX-13061/U to J3 on the KY-57.
Loosen the wing nut on the KY-57 mount and pull the KY-57 and
HYP-57 forward until the CX-13063/U (on the back of the HYP-57)
can be reached.
Disconnect the CX-13063/U from J2 on the HYP-57 and locate pins
A(+) and B(-) on P2.
Measure voltage between pins A(+) and B(-) of P2 (TP2 of Figure
52).
f. Test procedure 30.
If the meter indicates no voltage at TP2,
disconnect the other end of CX-13063/U from J-3513/U J2.
Measure continuity through the CX-13063/U from pin A of P1 to pin
B of P2 and from pin B of P1 to pin A of P2.
If the meter indicates infinite ohms, on either check through the
CX-13063/U, the cable is bad.
Send to COMSEC maintenance for
repair.
If the meter indicates zero ohms, the CX-13063/U is good and the
J-3513/U is bad. Send to COMSEC maintenance for repair.
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