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 105 Maintenance
Introduction
This topic provides the user with detailed instructions on the removal and replacement of modules within
the drive assembly and amplifiers. A faulty combiner must be replaced. When removing or refitting
modules, observe antistatic handling precautions. Do not change any potentiometer (or link) settings
unless detailed in these instructions. Potentiometers have been set using specialist equipment.
Molex KK Connectors
To remove Molex KK type connectors:
❑ Free the locking mechanism on the connector by moving one side of the connector up, then move
the other side up (see Fig 29). The upward motion should only be as far as needed to free the
locking mechanism
❑ DO NOT pull the cable to free the connector
❑ Note that KK type connectors are designed to be removed in this manner to free the locking
mechanism. Do not use this procedure with non-KK type connectors as damage to the connector
may occur.
Fig 29 Molex KK Type Connector
Tools, Materials and Test Equipment Required
The following tools, materials and test equipment should be made available to complete the maintenance
tasks described in this topic.
❑ Personal Computer (PC)
❑ General Purpose Tool Kit (including
a 1.5 mm Allen key)
❑ 5 mm Nut Spinner
❑ Camel Hair Brush
❑ Clean Lint-free Cloths
❑ Frequency Counter
❑ Power Meter
❑ Dummy Load
❑ PC to Radio Interconnection Lead
(Park Air part number 17E12600001)
❑ SMB to BNC Lead for Reference Frequency
(Park Air part number 17K11000004)
Lift 2Lift 1
PCB