Inspection Procedures

TB 1-1520-238-20-30

8. Inspection Procedures.

a. Safed aircraft per TM 55-1520-238-23, para 1-7-2.

b. Disconncct P511 from each of the following 4 pylon jacks:

1J511, 2J511, 3J511 and 4J511 at the pylon/launchcr interface.

NOTE

Prior to inspection clean all connectors addressed in this

Technical Bulletin using Electron 13- conductor cleaner,

NSN 6850-01-102-1809 or compound cleaning solvent -

flux removal, NSN 6850-00419-5004 or equivalent.

Ensure true aircraft ground is used for all measurements

in this Technical Bulletin.

c Apply External Electrical Power to the aircraft per TM 55-1520-238-23, para 1-7-16.

d. With the aircraft powered, ensure the Arm/Safe switches in both crew stations arc set in the off position.

c. Using a multimeter, check the P511 connectors of all four (4) pylons for 28 volts DC from pins AA, EE and

FF to ground. Note affected connector(s) and associated pin(s).

f. If no voltage levels are found, this inspection is completed. Reconnect all connectors and perform the Missile

System Maintenance Operational Check(MOC) per TM 9-1475-475-20, para 2-3-8. Proceed to step 9f for circuit

breaker usage restrictions,

g. If a voltage level is found proceed to the correction procedures in paragraph 9.

9. Correction Procedures.

a. For voltage levels encountered on pins AA of P511 on any one of the four pylons, proceed to 9c.

b. For voltage levels encountered on pins EE and/or FF of P511 on any one of the 4 pylons proceed to 9d.

c. Correction procedure for power at pin AA.

(1) Remove aircraft power.

(2) Gain access to the power distribution panel per TM 55-1520-238-23, para 2-3-44.

(3) Crossed wiring check.

(a) Locate CB3 (Figure 374, item 31, TM 55-1520-238-23P).

(b) Remove wire from terminal 5A. Using a multimeter, check from the removed wire to ground for

an open circuit.