Figure 2-20. Removal of ECU and GRU power cables.

TM 5-6675-250-34

Table 2-1. Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Figure 2-20. Removal of ECU and GRU power cables.

b. Inspect cable for damaged connectors and broken or frayed wires and insulation.

(1). Replace a damaged cable.

(2). Connect the interconnect cable to the GRU and ECU receptacle.

Step 3. Check for defective theodolite bright control (2A2R1) or MODE SELECT switch (2A2S3).

a. Loosen the eight captive screws and lift the electronic control panel assembly from the case (fig. 2-21).

Figure 2-21. Removal of ECU panel assembly.

Change 1

2-16,