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Page Title:
TS Guide 8. RT DISPLAY READS FAIL 6 |
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115820-890203
TROUBLESHOOTING GUIDES. Continued
3.2.
TS Guide 8. RT DISPLAY READS FAIL 6
ACTIONS
CHECKS
STEPS
N/A
N/A
Replace RT with known good RT
8.1
N/A
N/A
Set RT COMSEC to CT
TS Guide 9. COMSEC ALARM NOT HEARD AT HS, OR WILL NOT CLEAR
(NO EXTERNAL DEVICE)
CHECKS
ACTIONS
STEPS
Alarm heard? NO:
Go to 9.2
Define problem
9.1
YES: Go to 9.5
YES: Go to 9.3
Alarm heard
9.2 Connect HS to RT AUD/FILL
NO:
Replace RT
at HS?
N/A
N/A
9.3 Remove W4 from RT AUD/DATA
Alarm still
YES: Go to 9.4
Connect HS to RT AUD/DATA
heard?
NO:
Replace RT
Open?
YES: Replace W4 cable
9.4 Check continuity at W4,
NO:
Replace VAA
Pin B to Pin B
N/A
N/A
9.5 Remove W4 from RT AUD/DATA
N/A
Connect HS to RT AUD/FILL
N/A
YES: Go to 9.6
Alarm clears?
Press PTT twice
NO:
Go to 9.9
N/A
N/A
9.6 Set RT FCTN to STBY
then back to LD
N/A
N/A
Connect HS to RT AUD/DATA
Alarm clears?
Press PTT twice
YES: Go to 9.7
NO:
Replace RT
Remove W4 from VAA
N/A
N/A
9.7
Check continuity at W4
Open?
NO:
Go to 9.8
P1, Pin C to P2, Pin C
YES: Replace W4 cable
9.8 Remove VAA from MB
N/A
N/A
Short?
Check continuity at MB
YES: Replace MB
J3/J4, Pin to Pin A (GND)
NO:
Replace VAA
N/A
N/A
9.9 Set RT FCTN to STBY,
then back to LD
Press PTT twice
Alarm clears?
NO:
Go to 9.10
YES: Go to 9.6
N/A
9.10 Set RT FCTN to OFF,
N/A
then back to LD
Press PTT twice
Alarm clears?
YES: Go to 9.6
NO:
Replace RT
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