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NG1000 Troubleshooting Manual
Responding to alarms
Issue 0.4 2010-10-12
Page 1-15
TXA (or TXB) +5V Fail
TRANSMITTER A
TRANSMITTER B
This alarm occurs when the +5 V power supply
measured on the exciter/control PWB is outside the
acceptable range of 4.7 V to 5.3 V. Suspect a possible
fault on the exciter/control PWB (A1).
TXA (or TXB) +3.3V
Fail
TRANSMITTER A
TRANSMITTER B
This alarm occurs when the +3.3 V power supply’s
output voltage is outside the acceptable range of 3.0 V
to 3.6 V. Suspect a possible fault with the +3.3 V
supply circuitry on the exciter/control PWB (A1).
TXA (or TXB) +1.8V
Fail
TRANSMITTER A
TRANSMITTER B
This alarm occurs when the +1.8 V power supply’s
output voltage is outside the acceptable range of 1.6 V
to 2.0 V. Suspect a possible fault with the +1.8 V
supply circuitry on the exciter/control PWB (A1).
Alarm (with Prefix)
Alarm/Status LED
Description and Troubleshooting Action
Summary of Contents for NG1000
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Page 8: ...NG1000 Troubleshooting Manual Table of contents Page viii Issue 0 4 2010 10 12 ...
Page 10: ...NG1000 Troubleshooting Manual Page x Issue 0 4 2010 10 12 ...
Page 14: ...NG1000 Troubleshooting Manual Page xiv Issue 0 4 2010 10 12 ...
Page 22: ...NG1000 Troubleshooting Manual Page xxii Issue 0 4 2010 10 12 ...
Page 56: ...NG1000 Troubleshooting Manual Responding to alarms Page 1 34 Issue 0 4 2010 10 12 ...
Page 122: ...NG1000 Troubleshooting Manual Wiring connector lists Page 3 10 Issue 0 4 2010 10 12 ...
Page 128: ...NG1000 Troubleshooting Manual Reading Electrical Schematics Page 4 6 Issue 0 4 2010 10 12 ...
Page 153: ...Issue 0 4 2010 10 12 MD 6 Figure MD 6 NAPE82 Exciter Control PWB ...
Page 159: ...Issue 0 4 2010 10 12 MD 12 Figure MD 12 NAPA24 PA PWB C1 C2 C8 Q1 ...
Page 162: ...NG1000 Troubleshooting Manual List of terms Page 6 2 Issue 0 4 2010 10 12 ...
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