TM 11-6625-1831-13
5-3c.
Troubleshooting Break Out Box (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Wrong resistance from jack L to ground.
Step 1.
Check resistor R1. Measure resistance; should be 100 ohms.
Replace if defective (para 5-10).
Step 2.
Check wiring.
Repair as necessary (para 5-14).
6. Wrong resistance from jack M to ground.
Step 1.
Check resistor R2. Measure resistance; should be 100 ohms.
Replace if defective (para 5-10).
Step 2.
Check wiring.
Repair as necessary (para 5-14).
7. Wrong resistance from jack N to ground.
Step 1.
Check resistor R3. Measure resistance; should be 100 ohms
Replace if defective (para 5-10).
Step 2.
Check wiring.
Repair as necessary (para 5-14).
8. Wrong resistance from jack P to ground.
Step 1.
Check resistor R4 Measure resistance; should be 100 ohms.
Replace if defective (para 5-10).
Step 2.
Check wiring.
Repair as necessary (para 5-14).
9. Wrong resistance from jack A to ground
Check wiring Measure resistance from 3P15-A to ground (test box housing), and from E1 to ground
Both readings should be zero ohms.
Repair as necessary (para 5-14).
5-40
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