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RESPONDING TO ALARMS
VX150 TO VX2 TROUBLESHOOTING MANUAL
PAGE 3.1.10
VERSION 2.0 2023-04-20
Analog Audio PWB +12V
Failure
The Analog Audio PWB +12V Meter measures
less than 6V for a period of at least 5 seconds.
The Analog Audio PWB +12V Meter measures
greater than 6V for at least 5 seconds.
The most likely failure is the connection
between the Exciter and Analog Audio
PWB or a component failure on the
Analog Audio PWB.
Check the connection between the
Exciter and Analog Audio PWB and
measure the voltage at TP2 on the
Analog Audio PWB.
Consider replacement of the Analog
Audio PWB. See
Analog Audio PWB Audio
Failure
The Exciter has failed to detect a valid Analog
Audio data stream and/or a valid MPX data
stream from the Analog Audio PWB.
The Exciter has detected valid Analog Audio
and MPX data streams from the Analog Audio
PWB.
The most likely failure is the connection
between the Exciter and Analog Audio
PWB or a component failure on the
Analog Audio PWB.
Check the connection between the
Exciter and Analog Audio PWB.
Consider replacement of the Analog
Audio PWB. See
Analog Audio PWB DC Voltage
Failure
Any of the following Analog Audio PWB
voltage meters meet the stated criteria for a
period of at least 5 seconds:
Analog Audio PWB +8V Meter measures
less than +4 V or greater than +12 V
Analog Audio PWB -8V Meter measures
greater than -4 V or less than –12 V
Analog Audio PWB +5V Meter measures
less than +2.5 V or greater than +7.5 V
All of the following Analog Audio PWB
voltage meters meet the stated criteria for a
period of at least 5 seconds:
Analog Audio PWB +8V Meter measures
b4 V and +12 V
Analog Audio PWB -8V Meter measures
between -4 V and –12 V
Analog Audio PWB +5V Meter measures
b2.5 V and +7.5 V
If the Analog Audio PWB +12V Failure
alarm is present, this is the most likely
cause, so refer to the troubleshooting for
that alarm.
The next most likely cause is a
component failure on the Analog Audio
PWB. Consider replacement of the
Analog Audio PWB. See
PWB Replacement on page 3.1.40
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...
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