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10-2
VHF Schematic Diagrams, Overlays, and Parts Lists:
Introduction
6. Reference Designators are assigned in the following manner:
7. Circuit Block Interconnection Legend:
Ref. No. Series
Circuit Block
101 – 199
Microprocessor & audio control
circuits
1001 – 1099
Microprocessor & audio control
circuits
201 – 299
IF IC circuit
301 – 399
Front-end and 1st Mixer
401 – 499
Transmit RF stage & Auto power
control
501 – 599
Base band & generating circuit
601 – 699
Audio amplifier
701 – 799
VCO & PLL Synthesizer
Name
Description
+5V
5 Volts (Regulated)
+3.3V
3.3 Volts (Regulated)
SWB+
Switched Battery Voltage
BAT+
Unswitched Battery voltage
+10V
Digital 10V(Regulated)
RESET
Low-line reset signal fromU107 to U101 Pin 10
TX_EN1
Transmit enable signal from U101 Pin 84
TX_EN2
Transmit enable signal from U101 Pin 85
TXVB
TX operating voltage
TX_AF3
TX audio signal from audio processor IC to TX Audio
filter
TX_SUB_TONE
TX sub tone signal from audio processor IC to TX
modulation.
RX_B+
RX operating voltage
RSSI
RX signal strength indication from IF IC to U101
Busy
RX detect signal from IF IC to U101
FTV
RX frequency shift voltage
RX_AF1
RX audio signal from IF IC to Audio processor IC
PLL_LD
PLL lock detect signal from PLL IC to U101
N/S SW
Channel space selectable Switch (12.5 kHz/25 kHz)
1/2VCC
1.9 volts (divided by U502-D)
Содержание P100 Series
Страница 1: ...P100 Series Portable Radios Detailed Service Manual ...
Страница 2: ......
Страница 8: ...iv Notes ...
Страница 18: ...xiv List of Tables Notes ...
Страница 22: ...xviii Summary of Printed Circuit Boards and Bands Available Notes ...
Страница 30: ...Notes 2 4 Test Equipment Service Aids and Service Tools Service Aids ...
Страница 54: ...7 4 UHF2 Schematic Diagrams Overlays and Parts Lists Speaker and Microphone Schematic Notes ...
Страница 128: ...7 78 Circuit Board Schematic Diagram and Parts List UHF2 435 480 MHz Notes ...
Страница 150: ...7 100 Circuit Board Schematic Diagram and Parts List UHF2 MDC QCII R TTE 435 470 MHz Notes ...
Страница 166: ...10 4 VHF Schematic Diagrams Overlays and Parts Lists Speaker and Microphone Schematic Notes ...
Страница 192: ...10 26 Circuit Board Schematic Diagram and Parts List VHF 136 174 MHz Notes ...
Страница 218: ...10 52 Circuit Board Schematic Diagram and Parts List VHF 136 174 MHz Notes ...
Страница 242: ...10 76 Circuit Board Schematic Diagram and Parts List VHF MDC QCII R TTE 136 174 MHz Notes ...
Страница 258: ...13 4 UHF1 Schematic Diagrams Overlays and Parts Lists Speaker and Microphone Schematic Notes ...
Страница 261: ...Circuit Board Schematic Diagram and Parts List UHF1 403 447 MHz 13 7 Figure 13 5 Transmitter Schematic Diagram ...
Страница 328: ...13 74 Circuit Board Schematic Diagram and Parts List UHF1 MDC QCII R TTE 403 447 MHz Notes ...
Страница 332: ...A 4 Warranty Service Support and Replacement Parts Further Assistance From Motorola Notes ...
Страница 335: ......