Nautel VS300 Troubleshooting Manual

Also see for VS300: Quick start guide Installation manual Operation and maintenance manual Preinstallation manual Troubleshooting manual

Nautel VS300 Troubleshooting Manual Manual pdf 46 page image

VS300 Troubleshooting Manual Responding to alarmsPage 1-38 Issue 10.0 2019-01-18LVPS ReplacementSee Figure MD-1 (top view) in the Mechanical Drawings section (Section 6) of this manual.1. Remove the transmitter’s top cover. Retain hardware for re-installation.2. Disconnect wires # 1, 5, 12, 14, 18, 19, 20, 21, 22 and 23 from the LVPS’s terminalblock, noting their destinations.3. Remove the two countersunk M3 screws that secure the LVPS (U3) to the transmitter.Retain hardware.4. Remove the LVPS from the transmitter. Note the orientation for installation of thenew power supply.5. Locate or obtain a replacement LVPS (Nautel Part # UG80). Reverse Step 1 throughStep 4 to reinstall the new LVPS. If necessary, refer to Section 4 of this manual forwiring details for U3. Torque all terminal connections on U3 to 11 inch pounds(1.2 Newton-meters).6. Re-install the transmitter in its host cabinet, reconnect all interconnect cables andrestore operation by enabling ac and RF power.