Section V. GENERAL SUPPORT TEST PROCEDURES

TM 11-7010-201-40-1/ET821-AA-MMI-010/E154 MTS/T O 31S5-2TSQ73-2-1

Section V. GENERAL SUPPORT TEST PROCEDURES

3-22. Introduction. This section provides test procedures authorized for General Support maintenance of the MTS.

Cable assemblies are tested after removal from the MTS following the applicable procedure in section IV. The wired

plug-in unit test assembly is tested as part of the MTS. The self-test procedure for the MTS (TM 11-7010-201-12) is to

be performed after completion of any of the maintenance procedures in this manual. Satisfactory completion of the self-

test procedure verifies that the MTS is in serviceable condition.

3-23. Cable Assemblies W552, W553, W554 and W556 Test Procedure. Testing of cable assemblies W552, W553,

W554 and W556 consists of continuity (resistance) measurements from terminal to terminal and wire to wire. Perform

the following procedure to test a cable assembly.

a. Set up multimeter for resistance checks.

NOTE

All cable wiring is pin to pin; for example: pin 1 of P1 to pin 1 of P2, pin 2 of P1 to pin 2 of P2, etc.

b. Measure resistance from P1 pin 1 to P2 pin 1, P1 pin 2 to P2 pin 2, etc., until all 80 pins are checked. Multimeter

shall indicate short circuit for each measurement.

c. Measure resistance from P1 (or P2) pin 1 to P1 (or P2) pin 2, P1 (or P2) pin 2 to P1 (or P2) pin 3, etc., until all

adjacent pins are checked. Multimeter shall indicate open circuit for all measurements.

d. Replace cable assembly if either test b or test c is failed.

3-24. Wire Plug-In Unit Test Assembly Test Procedure. The wired plug-in unit test assembly is tested as part of the

complete MTS. Perform the following procedure to test the wired plug-in unit test assembly.

a. Perform MTS self-test procedure in TM 11-7010-201-12.

b. If self-test procedure indicates fault, perform MTS fault isolation procedure in TM 11-7010-201-12.

NOTE

An oscilloscope may be used for making voltage measurements specified in the fault isolation

procedure, which calls for a multimeter.

c. If test fails, replace wired plug-in unit test assembly following procedure described in paragraph 3-16.

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