Simoco SRP8000 SERIES, Service Manual

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TP0332/2 3.1
SRP8000 SERIES
VHF/UHF PORTABLE RADIO
SECTION 3 - TECHNICAL DESCRIPTION
INTRODUCTION
The SRP8000 Series is a range of advanced portable radios using the latest modern technology to
achieve a very high performance in a small size. Internally the radio consists of:
(a) Radio PCB A multi-layer assembly with components mounted both sides.
(b) MMI PCB Man-Machine-Interface containing the keyboard and display.
RADIO PCB DESCRIPTION
A ‘Top Level’ circuit diagram (with a block for each function), and individual circuit diagrams for each
of these function blocks, are located in Section 6. Each circuit diagram has two-digit component circuit
references prefixed with a single digit, unique to that particular circuit (eg. C41, on the PSU circuit diagram,
has a prefix of 5 so that its circuit reference becomes C541 - see below). The main ‘Top Level’ circuit
diagram references are two-digit without a prefix).
The PCB assembly contains the following functional blocks:
Circuit Block Figure Number Circuit Reference Prefix
Power supply 6.7 5
Receiver 6.8 2 and 3
Transmitter 6.9 1
Frequency generation 6.10 4
Control 6.11 6
Baseband 6.12 7
Smart interface 6.13 8.
Overall Block Schematic Diagram
Figure 3.1 Overall Block Schematic Diagram
Transmitter
Receiver
Frequency
Generation
Power
Supply
Battery Battery
Charger
Control Baseband
MMI
Internal
Options
SMART
Interface
Microphone Speaker
User Controls and Display
Ancillaries
Antenna
All
Supplies