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NG1000 Troubleshooting Manual
Responding to alarms
Page 1-26
Issue 0.4 2010-10-12
RF Coaxial Switch Replacement
See Figure
MD-1
in the Mechanical Drawings section (Section 6) of this manual.
1. Turn off the transmitter system and disconnect (or disable) its ac power sources.
2. Open the system cabinet’s rear door and locate the RF coaxial switch (U1) mounted near the
top of the cabinet.
3. Disconnect four coaxial cables (W5P2, W6P2, W7P1 and W8P1) and 9-pin D-sub connector
W3P2 from the RF coaxial switch.
4. Remove the switch bracket, noting it is secured using M4 hardware. Retain hardware to
install the new switch on this bracket.
5. Locate or obtain a replacement RF coaxial switch (Nautel Part # KC78). Reverse
Step 1
through
Step 4
to reinstall the new RF coaxial switch. If necessary, refer to
Table 3.4 on
page 3-3
for connection details. The transmitter system should resume normal operation and
any associated alarm should clear.
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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