No indication on front panel meter of loop current in dc loops No. 1 and No. 2.

TM 11-5805-387-20-2

Table 2-2 TROUBLESHOOTING - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

5. No indication on front panel meter of loop current in dc loops No. 1 and No. 2.

Step 1. Check for loose or damaged dc loop No. 1 or dc loop No. 2 cables.

Be sure that the appropriate connector is clean and fits tightly. If cables are

shorted or have open conductors, replace them.

Step 2. Use Multimeter AN/URM-105 to check switch S3 for bad contacts. (See malfunction 2

for location of switch S3.)

If contacts are bad, higher category of maintenance required.

Step 3. Be sure loop battery module A5 is securely seated in a corrosion-free socket.

CHASSIS INTERIOR, TOP VIEW

Step 4. Use Multimeter AN/UM-105 to check switch S2 for bad contacts.

If contacts are bad, higher category of maintenance required.

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