
NV5LT/NV3.5LT TROUBLESHOOTING MANUAL
RESPONDING TO ALARMS
PAGE 4.1.38
VERSION 3.3 2016-03-10
Table 4.1.3: Other Power Supply LED States
Operating with Defective or Missing Power Supply or LVPS Modules
You can operate the transmitter - at normal desired power level - with one defective or missing LVPS
module, assuming the transmitter was using dual LVPS modules. To replace an LVPS module, go to
“LVPS / Power Supply Module Replacement” on page 4.1.46
You can operate the transmitter - at a reduced output power level - with multiple defective or missing
power supply module(s) (see
). To replace a power supply module, go to
“LVPS / Power Supply Module Replacement” on page 4.1.46
Condition
Power Supply LED State
AC OK
(green)
DC OK
(green)
SERVICE
(amber)
FAULT
(red)
OK
On
On
Off
Off
Thermal alarm (5 degrees before shutdown)
On
On
On
Off
Thermal shutdown
On
Off
On
On
Defective fan, blown ac fuse, boost stage failure or over
voltage latched shutdown
On
Off
Off
On
Ac present, but not within limits
Blinks
Off
Off
Off
Ac not present
Off
Off
Off
Off
Non-catastrophic internal failure
On
On
Off
On
Standby
On
Off
Off
Off
Service Request (PMBus mode)
On
On
Blinks
Off
Communications Fault
On
On
Off
Blinks
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Страница 294: ...VERSION 3 3 2016 03 10 SD 32 Figure SD 32 NAFP109B Output Power Probe and Sample PWBs ...
Страница 307: ...VERSION 3 3 2016 03 10 MD 8 Figure MD 8 NAPA31C Power Amplifier PWB Q1 ...
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