Cable Assemblies Fault Isolation

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

3-9. Cable Assemblies Fault Isolation. If equipment malfunctions cannot be corrected by performing all other normal

fault isolation (FI) procedures, a defective cable assembly (W552, W553, W554, or W556) may be the cause. One

method for making this determination is by cable assembly substitution. The general procedure for this consists of first

disconnecting a suspected cable assembly (but leaving it in place), then obtaining a replacement cable assembly and

stringing it out in the most direct route from unit to unit. If the replacement cable corrects the problem, the defective

cable should be removed and the replacement installed in accordance with the appropriate procedure in section IV. A

second method is to test the cable assembly following the appropriate procedure in section V. An overall cabling

diagram for the MTS is shown in FO-3 (in back of manual).

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