User's Manual Part 2
Table Of Contents
- Maintenance
- Introduction
- Scheduled Maintenance
- Unscheduled Maintenance
- Introduction
- Tools, Materials and Test Equipment Required
- T6T VHF Amplifier Procedures
- Top and Bottom Covers
- Removing and Refitting the Interface Module
- Removing and Refitting the PSU Regulation Module
- Removing and Refitting the Power Supply Modules
- Removing and Refitting the Combiner BIT Module
- Removing and Refitting the PA Modules
- Removing and Refitting the Front Panel PCB
- Removing and Refitting the Cooling Fans
- T6T VHF Drive Assembly Procedures
- Removing the Top Cover
- Removing and Refitting the Processor Module
- Removing and Refitting the PSU Regulation Module
- Removing and Refitting the Drive Module
- Removing the Bottom Cover
- Removing and Refitting the PA Control Module
- Removing and Refitting the Power Supply
- Removing and Refitting the Front Panel PCB
- Virtual Front Panel (VFP)
T6T 300 Watt VHF Transmitter Page 103 Maintenance
AC and DC Change-over Check
If both ac and dc input supplies are connected to the transmitter, carry out the following check:
(1) Confirm that both ac and dc supplies are connected to the transmitter. Ensure that the rear panel
Supply switches are set to the I (on) position.
(2) Confirm that the front panel Ready indicators are lit, the LCD is illuminated, and the transmitter
is operational.
(3) Switch off the ac supply from its source.
(4) Check that the transmitter continues to operate correctly from the dc supply. If accessed, the
front panel BIT screen will show AC Supply as off, and DC Supply as on. The value of the dc
supply is also shown.