NV5/NV3.5 Troubleshooting Manual
Responding to alarms
Issue 3.2 2014-12-10
Page 1-41
LVPS module A (U3). Disconnect P6 from A6J7 for LVPS module B (U4). The LVPS
module’s green lamp should turn off. Verify ac power has been disconnected from the LVPS
module by using a digital voltmeter to verify 0 V between the
L
and ground terminals and
between the
N
and ground terminals.
3. Disconnect all wiring from the LVPS module’s terminal block, noting the specific destination
of each wire.
4. Using a 4 mm hex key (not provided), loosen the two M5 cap screws securing the LVPS
module to the transmitter. Remove the LVPS module and its mounting plate from the
transmitter.
5. Remove the two M4 screws that secure the LVPS module to its mounting plate.
6. Locate or obtain a replacement LVPS module (Nautel Part # UG68). Reverse
and
to reinstall the new LVPS module. If necessary, refer to
to locate wiring details.
7. From the AUI’s
System Review
page, select
Controller
and view the
+5V A
or
+5 V B
meter,
depending on which LVPS module was replaced. If necessary, adjust the potentiometer on
the rear of the LVPS module until the meter reading is 5.6 V.
8. The transmitter should resume normal operation and the alarm should clear.
Figure 1.6: Location of +12 V and Low Voltage Power Supplies
Partial Side View - Panel Removed
Rear
Summary of Contents for NV3.5
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Page 8: ...NV5 NV3 5 Troubleshooting Manual Page viii Issue 3 2 2014 12 10...
Page 168: ...NV5 NV3 5 Troubleshooting Manual Wiring connector lists Page 4 16 Issue 3 2 2014 12 10...
Page 174: ...NV5 NV3 5 Troubleshooting Manual Reading Electrical Schematics Page 5 6 Issue 3 2 2014 12 10...
Page 196: ...Issue 3 2 2014 12 10 SD 20 Figure SD 20 Power Amplifier Pallet CD2011B...
Page 212: ...Issue 3 2 2014 12 10 MD 6 Figure MD 6 NAI17 RF Drive Splitter Changeover Assembly A2 A1...
Page 213: ...Issue 3 2 2014 12 10 MD 7 Figure MD 7 Ac Distribution Assembly 206 5150 01...
Page 217: ...Issue 3 2 2014 12 10 MD 11 Figure MD 11 NAL09A 2 Input Reject Load Assembly A1...
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