TM 11-5820-890-30-4
2-30. TROUBLESHOOTING FLOWCHARTS.
CHART
48
CUE display
50
51
52
Continued
SYMPTOM
is absent (display does
49
Will not transmit
present).
Will not transmit
same as CH 2).
No asterisk (*)
53
54
55
56
57
58
59
60
61
62
63
64
65
not read cue).
SC, , 4.8K data (10 V p-p sine wave is not
SC, CT, 4.8K data (CH 1 does not lock up or is not
function (CH 1 does not read noise).
Will not receive SC, CT, 4.8K data (CH 1 does not lock up or is not
same as CH 2).
Will not receive SC, , AD2 data (CH 1 does not lock up or is
not same as CH 2).
Will not receive SC, , AD2 data (no distorted sine wave or is
not same as CH 2).
Will not transmit SC, , AD2 data (no distorted sine wave or is
not same as CH 2).
Will not transmit SC, , 16K data (no 9.5 to 10.5 V p-p square
wave is displayed).
Will not retransmit (RT is
Will not retransmit (CH 1
Will not retransmit (logic
Will not retransmit (DMM
keyed in RXMT).
waveform is not same as CH 2).
1 does not go to logic 0).
does not read 1.5 to 3.0 V dc).
Will not retransmit (tone is not heard).
Will not hold Fill (display does not read FXXX or there is not
silence).
WiII not zeroize COMSEC 1-5 (no beeping alarm tone).
Zeroizes COMSEC 6 (alarm tone does not stop).
WiII not zeroize COMSEC 6 (no constant alarm tone).
2-51
