TM 11-5820-890-30-4
3-21. TROUBLESHOOTING FLOWCHARTS.
The following charts are included:
Chart
Symptom
1
Display is not lit.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Control-monitor failure.
Incorrect RF output.
Incorrect power voltages.
No 27.5 V dc to UUT.
No 27.5 V dc to UUT when 28 V switch is ON.
No 6.75 V dc to UUT.
No 13 V dc supply to UUT.
No 5 V dc supply to UUT.
No 1.5 V dc supply to UUT.
No GND connection to UUT.
No GND connection to UUT.
Relay K1 is stuck ON.
Relay K1 is inactive.
No signal output to frequency counter.
Relay K2 is faulty.
Relay K2 is faulty.
No signal output is at REF ANT.
3-49
