Figure 2-9. Troubleshooting Setup #2.

TM 11-6130-429-40

Figure 2-9. Troubleshooting Setup #2.

Table 2-3. Troubleshooting-Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTION ACTION

d. Turn equipment OFF. Connect voltmeter to TP1 and TP3 on front panel. Turn equipment ON and observe meter reading

of +4.98 to 5.02 Vdc.

Loosen locking nut on +5 VOLT ADJ (R8) and adjust it until meter reading is correct; then tighten locking nut.

e. Using voltmeter, check for +3.047 to 3.121 Vdc between U3-5 (positive) and U3-11.

Check U3 and associated components. Replace defective component.