User guide

578
pmp-0229 (Mar 2013)
Procedures for Troubleshooting Troubleshooting
◦ if the known good module fails to power up, request an RMA for the power
supply.
◦ if the known good module powers up, return to the module that does not power
up.
9. Reconnect the power supply to the failing module.
10. Connect the power supply to a power source.
11. Verify that the red LED labeled PWR lights.
12. If this LED does not light, and the module has not been powered up since the last
previous FPGA firmware upgrade was performed on the module, then request an
RMA for the module.
Power Supply Does Not Produce Power
To troubleshoot the failure of a power supply to produce power, perform the following steps.
Procedure 50: Troubleshooting failure of power supply to produce power
1. Verify that the connector crimps on the Ethernet cable are not loose.
2. Verify that the Ethernet cable is not damaged.
3. Verify that the cable is wired and pinned out according to the specifications
provided under Wiring Connectors on Page 188.
4. Connect the power supply to a known good module via a known good Ethernet
cable.
5. Attempt to power up the known good module.
6. If the known good module fails to power up, request an RMA for the power
supply.
CMM Does Not Pass Proper GPS Sync to Connected
Modules
If the Event Log tabs in all connected modules contain Loss of GPS Sync Pulse messages,
perform the following steps.
Procedure 51: Troubleshooting CMM not passing sync
1. Verify that the GPS antenna has an unobstructed view of the entire horizon.
2. Verify that the GPS coaxial cable meets specifications.
3. Verify that the GPS sync cable meets specifications for wiring and length.
4. If the web pages of connected modules indicate any of the following, then find
and eliminate the source of noise that is being coupled into the GPS sync cable:
◦ In the GPS Status page
− anomalous number of Satellites Tracked (greater than 12, for example)
− incorrect reported Latitude and/or Longitude of the antenna
◦ In the Event Log page