Garmin GNC 420 GPS Receiver User Manual


 
Page 3-14 400 SERIES MAINTENANCE MANUAL
Rev. C P/N 190-00140-05
Table 3-10. Testing FailuresNAV Receiver
TEST FAILURE TEST PARAGRAPH RECOMMENDED ACTION
Voice/Ident Audio Output Level 5.7.3.1 Replace Nav Receiver Board (see paragraph 4.5.6)
Voice/Ident Audio Frequency
Response
5.7.3.2 Replace Nav Receiver Board (see paragraph 4.5.6)
Voice/Ident Audio Distortion 5.7.3.3 Replace Nav Receiver Board (see paragraph 4.5.6)
VOR AGC 5.7.3.4 Replace Nav Receiver Board (see paragraph 4.5.6)
VOR Audio Sensitivity 5.7.3.5 Replace Nav Receiver Board (see paragraph 4.5.6)
Receiver Quieting 5.7.3.6 Replace Nav Receiver Board (see paragraph 4.5.6)
Ident/Voice Tone Ratio 5.7.3.7 Replace Nav Receiver Board (see paragraph 4.5.6)
Harmonic Distortion 5.7.3.8 Replace Nav Receiver Board (see paragraph 4.5.6)
VOR Flag Sensitivity 5.7.3.9 Replace Nav Receiver Board (see paragraph 4.5.6)
LOC Flag Sensitivity 5.7.3.10 Replace Nav Receiver Board (see paragraph 4.5.6)
VOR/LOC Composite Test 5.7.3.11 Replace Nav Receiver Board (see paragraph 4.5.6)
VOR Course Deviation
Sensitivity
5.7.3.12 Replace Nav Receiver Board (see paragraph 4.5.6)
Localizer Course Deviation
Sensitivity
5.7.3.13 Replace Nav Receiver Board (see paragraph 4.5.6)
TO-FROM Indicator 5.7.3.14 Replace Nav Receiver Board (see paragraph 4.5.6)
Centering Accuracy 5.7.3.15 Replace Nav Receiver Board (see paragraph 4.5.6)
Course Deviation Accuracy Test 5.7.3.16 Replace Nav Receiver Board (see paragraph 4.5.6)
VOR OBS Bearing Accuracy 5.7.3.17 Replace Nav Receiver Board (see paragraph 4.5.6)
Selectivity 5.7.3.18 Replace Nav Receiver Board (see paragraph 4.5.6)
Spurious Response—VOR/LOC 5.8.5.19 Replace Nav Receiver Board (see paragraph 4.5.6)