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 49 page image

VS300 Troubleshooting Manual Responding to alarmsIssue 10.0 2019-01-18 Page 1-41Exciter/Control PWB 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 all mating plugs from the exciter/control PWB (A1), both inside thetransmitter and at the rear of the transmitter.3. At the rear panel, remove any securing hardware for connectors that protrude throughthe rear panel. Retain all hardware for re-installation.• Locate the two DB-25 connectors (J2A and J2B) and the two DB-9 connectors (J5Aand J5B) on the rear panel. Using a 5 mm nut driver or socket, remove themounting nuts.• Locate the AES/EBU XLR audio connector (J3) on the rear panel. Remove thetwo small pan-head Phillips screws.• Remove the silver push button connector lock (“push” lever) on the XLRconnector. Locate the HAS78 removal tool from the ancillary kit, provided withthe transmitter. Follow the manufacturer's instructions in Figure 1.6 on page 1-42to remove the push button. You will need access to the front and rear of thereceptacle to remove it.4. See Figure 1.7 on page 1-42. Remove the locking rings from five BNC connectors (J4A,J4B, J6A, J6B and J7). To remove the locking rings, use small 4 - 6 inch slip-jaw pliers.Gently loosen (do not tightly pinch or deform) each locking ring. Typically, half aturn with the pliers will loosen a locking ring enough to remove it by hand. Removeand retain the locking rings.5. Remove the three small Phillips screws, which mount the front of the exciter/controlPWB to the chassis, located along the edge of the exciter/control PWB. Retainhardware for re-installation.NOTE:Theexciter/controlPWBisstaticsensitiveandmustbehandledinastaticprotectedmanner.