Motorola P100 Series Detailed Service Manual page 52

7-2
6. Reference Designators are assigned in the following manner:
7. Circuit Block Interconnection Legend:
Name
+5V
+3.3V
SWB+
BAT+
+10V
RESET
TX_EN1
TX_EN2
TXVB
TX_AF3
TX_SUB_TONE
RX_B+
RSSI
Busy
FTV
RX_AF1
PLL_LD
N/S SW
1/2VCC
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UHF2 Schematic Diagrams, Overlays, and Parts Lists: Introduction
Ref. No. Series
Microprocessor & audio control
101 – 199
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
5 Volts (Regulated)
3.3 Volts (Regulated)
Switched Battery Voltage
Unswitched Battery voltage
Digital 10V(Regulated)
Low-line reset signal fromU107 to U101 Pin 10
Transmit enable signal from U101 Pin 84
Transmit enable signal from U101 Pin 85
TX operating voltage
TX audio signal from audio processor IC to TX Audio
filter
TX sub tone signal from audio processor IC to TX
modulation.
RX operating voltage
RX signal strength indication from IF IC to U101
RX detect signal from IF IC to U101
RX frequency shift voltage
RX audio signal from IF IC to Audio processor IC
PLL lock detect signal from PLL IC to U101
Channel space selectable Switch (12.5 kHz/25 kHz)
1.9 volts (divided by U502-D)
Circuit Block
Description