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VX150 TO VX2 TROUBLESHOOTING MANUAL
RESPONDING TO ALARMS
VERSION 2.0 2023-04-20
PAGE 3.1.27
PA Fail/PA1 Fail
In all models this alarm will trigger if the PA
current is less than 50mA while the system is
RF ON and operating.
In VX1.5 and VX2 this alarm will also trigger if
the PA current is less than 50% of the average
of the two PA current meters.
This alarm must be cleared by performing an
alarm reset in the Front Panel UI, AUI, or via
the transmitters discrete remote I/O.
Check PA 1 connections, fuse, and FET.
The most likely cause of this alarm is a
bad connection or failed PA.
Consider replacing PA 1. See
Amplifier PWB Replacement on
page 3.1.60
.
PA 2 Bias Fail
The Autobias routine was unable to reach the
150mA target bias current for PA 2 within the
timeout of 3 minutes or within the allowable
minimum and maximum bias voltages.
This alarm is cleared by starting the Autobias
routine.
Performing an alarm reset will clear this
alarm.
Check PA 2 connections, fuse, and FET.
The most likely cause of this alarm is a
bad connection or failed PA.
Attempt to re-run the Autobias routine.
Check the System Interface Board (See
SD-9) TP7 voltage matches the PA 2 Bias
meter when RF is ON and operating.
Consider replacing PA 2. See
Amplifier PWB Replacement on
page 3.1.60
.
PA2 Fail
This alarm will trigger if the PA current is less
than 50mA while the system is RF ON and
operating.
It will also trigger if the PA current is less than
50% of the average of the two PA current
meters.
This alarm is only present in VX1.5 & VX2
models.
This alarm must be cleared by performing an
alarm reset in the Front Panel UI, AUI, or via
the transmitters discrete remote I/O.
Check PA 2 connections, fuse, and FET.
The most likely cause of this alarm is a
bad connection or failed PA.
Consider replacing PA 2. See
Amplifier PWB Replacement on
page 3.1.60
.
Alarm Name
Trigger Conditions
Clear Conditions
Troubleshooting
Содержание VX150
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Страница 168: ...VERSION 2 0 2023 04 20 MD 6 Figure MD 6 NAPI189 Analog Audio PWB...
Страница 169: ...VERSION 2 0 2023 04 20 MD 7 Figure MD 7 NAPI187A System Interface PWB...
Страница 170: ...VERSION 2 0 2023 04 20 MD 8 Figure MD 8 NAPI188 01 Power Supply Interface PWB VX150 VX300 VX600...
Страница 171: ...VERSION 2 0 2023 04 20 MD 9 Figure MD 9 NAPI188 Power Supply Interface PWB VX1 VX1 5 VX2...
Страница 172: ...VERSION 2 0 2023 04 20 MD 10 Figure MD 10 NAPI193 Front Panel User Interface PWB...
Страница 173: ...VERSION 2 0 2023 04 20 MD 11 Figure MD 11 NAPA41 Pre Amp IPA PWB...
Страница 174: ...VERSION 2 0 2023 04 20 MD 12 Figure MD 12 NAPA40A Power Amplifier PWB...
Страница 175: ...VERSION 2 0 2023 04 20 MD 13 Figure MD 13 NAPF16A Low Pass Filter PWB...
Страница 176: ...VERSION 2 0 2023 04 20 MD 14 Figure MD 14 NAPP15A Directional Coupler Bottom PWB...
Страница 177: ...VERSION 2 0 2023 04 20 MD 15 Figure MD 15 NAPH15 2 Way Splitter PWB VX1 5 VX2...
Страница 178: ...VERSION 2 0 2023 04 20 MD 16 Figure MD 16 2 Way Combiner PWB Nautel Part PU03B VX1 5 VX2...
Страница 180: ...VX LP TROUBLESHOOTING MANUAL LIST OF TERMS PAGE 3 6 2 VERSION 2 0 2023 04 20...
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