Functional description of PCBs
46 Manpack Transceiver 2110 series Repair Guide
Front Panel Assembly
The Front Panel Assembly consists of the Front Panel PCB and associated connectors,
the Keypad PCB and key membrane, the audio speaker, and the GPS equipment (if
fitted).
This assembly performs the following functions:
• arranges the key inputs into a signal matrix connected via P1 to the Front Panel PCB
• provides infrared transmission/reception connected via P1 to/from the Front
Panel PCB
• illuminates the front panel via P1 on the Front Panel PCB
• provides audio output from the Front Panel PCB
• contains the connectors that direct the inputs and outputs from the GPIO and handset
connectors to/from the Front Panel PCB via a flexible ribbon cable
• contains the 50 RF connector, which connects via a coaxial cable to the RF/IF &
Synthesiser PCB
• contains the antenna stud, which connects via a wire to the Antenna Tuner PCB
• contains the GPS antenna, if fitted
• contains the external GPS connector, if fitted
The Front Panel Assembly contains:
• keypad membrane and Keypad PCB
• infrared transceiver (H13)
• LED backlighting
• waterproof audio speaker
• 19-way or 5-way GPIO connector depending on variant
• 6-way handset connector
•50 BNC connector
• antenna stud
• GPS antenna, if fitted
• external GPS antenna connector, if fitted
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