Table 5-1. Troubleshooting Procedures (cont)

TM 55-6605-263-14&P

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

11. The Gyro slaves at a continuous rate.

Step 1. Check cables and connections to Gyro and Angle Position Indicator.

Tighten Connections.

Step 2. Check drift bias voltage.

Make proper voltage adjustment.

Step 3. Check input power, (115 Vac 400 Hz), to Gyro.

Replace defective component.

12. Drift bias adjustment erratic or unstable.

Step 1. Ensure drift bias voltage is stable.

Step 2. Check Drift Bias Adj. for smooth mechanical operation.

Replace defective component(s).

13. " " or "S" hemisphere adjustment erratic or inoperative.

Step 1. Check switch for mechanical smoothness.

Replace defective component.

14. Latitude position adjustment erratic or inoperative.

Step 1. Check latitude potentiometer for mechanical smoothness.

Replace defective component.

5-6