Motorola 200 Service Manual

CP150™/CP200™Commercial SeriesTwo-Way Radio Detailed Service ManualMOTOROLA, The Stylized M logo, and Radius are trademarks of Motorola, Inc.All other

viii Table of ContentsJune, 2005 6880309N62-CList of FiguresFigure 1-1. Programming/Test Cable...

7-30 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)June, 2005 6880309N62-C5 V7.5 V (ON)0 V (OFF)3.3 V (ON)0 V (OFF)0 V

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-316880309N62-C June, 2005C1C2C3C4C5C6C7C8C9C22C23C24C25C29C30C31C32C3

7-32 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)June, 2005 6880309N62-CC20C26C40C41C42C43C44C51C52 C53C55C56C57C58C

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-336880309N62-C June, 2005VHF (146-174 MHz) Radio Parts List (8486342Z

7-34 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)June, 2005 6880309N62-CC430 2113743M24 0.1 uFC431 2113743L17 1000 p

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-356880309N62-C June, 2005R90 0662057M43 51R91 0662057M79 1.6KR100 066

7-36 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)June, 2005 6880309N62-C* Motorola Depot Servicing onlyU490 5108858K

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-376880309N62-C June, 2005Chapter 7 VHF (146-174 MHz) Schematic Diagra

7-38 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)June, 2005 6880309N62-C 0.74V (Rx)700mV (RF)3.95V (Rx)2.0V (Rx)3.38

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-396880309N62-C June, 2005100 mV RMS (25KHz)2.1V When -47 dBm @ antenn

Table of Contents ix6880309N62-C June, 2005Figure 7-33. VHF (146-174 MHz) Controller Interconnect Schematic Diagram (8486342Z09-A) ... 7-27Figure 7

7-40 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)June, 2005 6880309N62-C1SV23247k3V2.7pF150k45J68D201C203100NUNUTCXO

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-416880309N62-C June, 20054.5VRX: 0VTX: 3V206 mV (RF)850 mV (RF)1200 m

7-42 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)June, 2005 6880309N62-C3.0 V (Hi)1100 mV (RF)DO NOT MEASURE0.9 V (T

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-436880309N62-C June, 2005DC_REGULATIONAUDIOMICROPROCESSORACCESSORY/KE

7-44 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)June, 2005 6880309N62-CEEPROMGREEN LEDRED LEDFLASHSRAM10KR410820R41

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-456880309N62-C June, 20050 V (Rx)R516MICROPHONE CONNECTOR3 V (Tx)Not

7-46 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)June, 2005 6880309N62-C5 V (Rx)0 V (Tx)0 V (Rx)5 V (Tx)3.3 V (Rx)0

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-476880309N62-C June, 2005C1C2C3C4C5C6C7C8C9C22C23C24C25C29C30C31C32C3

7-48 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)June, 2005 6880309N62-CC20C26C40C41C42C43C44C51C52C53C55C56C57C58C5

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-496880309N62-C June, 2005VHF (146-174 MHz) Radio Parts List (8486342Z

x Table of ContentsJune, 2005 6880309N62-CFigure 12-6. UHF (403-440 MHz) Synthesizer Schematic Diagram (8486635Z03-O) ... 12-8Figu

7-50 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)June, 2005 6880309N62-CC411 2113743M24 CAP, 0.1uFC412 2113743L17 CA

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-516880309N62-C June, 2005R61 0662057N23 RES, 100KR62 0662057M86 RES,

7-52 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C)June, 2005 6880309N62-C* Motorola Depot Servicing onlyU52 5109522E1

VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-536880309N62-C June, 2005Chapter 7 VHF 146-174 MHz Schematic Diagrams,

7-54 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-C 0.74V (Rx)700mV (RF)3.95V (Rx)2.0V (Rx)3.38V

VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-556880309N62-C June, 2005100 mV RMS (25KHz)2.1V When -47 dBm @ antenna3

7-56 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-C1SV23247k3V2.7pF150k45J68D201C203100NUNUTCXO22

VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-576880309N62-C June, 20054.5VRX: 0VTX: 3V206 mV (RF)850 mV (RF)1200 mV

7-58 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-C3.0 V (Hi)1100 mV (RF)DO NOT MEASURE0.9 V (Tx)

VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-596880309N62-C June, 2005DC_REGULATIONAUDIOMICROPROCESSORACCESSORY/KEYP

Table of Contents xi6880309N62-C June, 2005List of TablesTable 1-1. Recommended Test Equipment...

7-60 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CEEPROMGREEN LEDRED LEDFLASHSRAM10KR410820R411C

VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-616880309N62-C June, 20050 V (Rx)R516MICROPHONE CONNECTOR3 V (Tx)Not Pl

7-62 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-C5 V (Rx)0 V (Tx)0 V (Rx)5 V (Tx)3.3 V (Rx)0 V

VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-636880309N62-C June, 2005C410C412C413C418C419C421C422C430C431C432C433C4

7-64 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CC157C121C158C122C130C132C131C135C133C134C140C1

VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-656880309N62-C June, 2005VHF (146-174 MHz) Radio Parts List (8486769Z04

7-66 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CC410 2313960D07 CAP, 10uFC411 2113946K02 CAP,

VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-676880309N62-C June, 2005R53 0613952R13 RES, 33KR54 0613952Q90 RES, 510

7-68 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CT41 2515121H01 Balun TransformerT42 2515121H01

Chapter 7 VHF Schematic Diagrams, Overlays, and Parts Lists7.1 IntroductionThis section provides schematic diagrams, overlays, and parts lists for the

xii Table of ContentsJune, 2005 6880309N62-C

June 6, 2005 6880309N62-C7-2 VHF Schematic Diagrams, Overlays, and Parts Lists: Introduction7. Circuit Block Interconnection Legend:301-400 DC Regulat

6880309N62-C June, 2005VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 7-37.1.2 Six Layer Circuit BoardFigure 7-1.

June, 2005 6880309N62-CThis Page Intentionally Left Blank7-4 VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic

Chapter 8 403-440 MHz UHF Theory Of Operation8.1 IntroductionThis chapter provides a detailed theory of operation for the radio components. Schematic

June, 2005 6880309N62-C8-2 403-440 MHz UHF Theory Of Operation: UHF ReceiverThe output of the RF amplifier is applied to the interstage filter, a fixe

6880309N62-C June, 2005403-440 MHz UHF Theory Of Operation: UHF Transmitter 8-38.3 UHF TransmitterThe UHF transmitter covers the range of 403-440 MHz.

June, 2005 6880309N62-C8-4 403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry8.3.4 Antenna Matching NetworkThe harmonic filter pr

6880309N62-C June, 2005403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 8-5SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins

June, 2005 6880309N62-C8-6 403-440 MHz UHF Theory Of Operation: UHF Frequency Generation CircuitryOne of the auxiliary outputs of the synthesizer IC (

6880309N62-C June, 2005403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 8-7C267, and varactor D261. High-port audio modulation

Chapter 1 Test Equipment, Service Aids, and Service Tools1.1 Test EquipmentTable 1-1 lists test equipment required to service the CP150/CP200 Radios.T

June, 2005 6880309N62-CNotes:8-8 403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry

Chapter 9 438-470 MHz UHF Theory Of Operation9.1 IntroductionThis chapter provides a detailed theory of operation for the radio components. Schematic

June, 2005 6880309N62-C9-2 438-470 MHz UHF Theory Of Operation: UHF ReceiverThe output of the RF amplifier is applied to the interstage filter, a fixe

6880309N62-C June, 2005438-470 MHz UHF Theory Of Operation: UHF Transmitter 9-39.3 UHF TransmitterThe UHF transmitter covers the range of 438-470 MHz.

June, 2005 6880309N62-C9-4 438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry9.3.4 Antenna Matching NetworkThe harmonic filter pr

6880309N62-C June, 2005438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 9-5SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins

June, 2005 6880309N62-C9-6 438-470 MHz UHF Theory Of Operation: UHF Frequency Generation CircuitryOne of the auxiliary outputs of the synthesizer IC (

6880309N62-C June, 2005438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 9-7C267, and varactor D261. High-port audio modulation

June, 2005 6880309N62-CNotes:9-8 438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry

Chapter 10 465-495 MHz UHF Theory Of Operation10.1 IntroductionThis chapter provides a detailed theory of operation for the radio components. Schemati

June, 2005 6880309N62-C1-2 Test Equipment, Service Aids, and Service Tools: Service Aids1.2 Service AidsTable 1-2 lists service aids recommended for w

June, 2005 6880309N62-C10-2 465-495 MHz UHF Theory Of Operation: UHF ReceiverThe output of the RF amplifier is applied to the interstage filter, a fix

6880309N62-C June, 2005465-495 MHz UHF Theory Of Operation: UHF Transmitter 10-310.3 UHF TransmitterThe UHF transmitter covers the range of 465-495 MH

June, 2005 6880309N62-C10-4 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry10.3.4 Antenna Matching NetworkThe harmonic filter

6880309N62-C June, 2005465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 10-5SPI_CLK, and SYNTH_CS (chip select) lines (U409 pin

June, 2005 6880309N62-C10-6 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation CircuitryOne of the auxiliary outputs of the synthesizer IC

6880309N62-C June, 2005465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 10-7C267, and varactor D261. High-port audio modulation

June, 2005 6880309N62-CNotes:10-8 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry

Chapter 11 UHF Troubleshooting Tables11.1 Troubleshooting Table for ReceiverTable 11-1. Troubleshooting Table for Receiver Symptom Possible Causes Pr

June, 2005 6880309N62-C11-2 UHF Troubleshooting Tables: Troubleshooting Table for ReceiverNo Audio1. Synthesizer out of lock Verify U201-4 is at 3V dc

6880309N62-C June, 2005UHF Troubleshooting Tables: Troubleshooting Table for Synthesizer 11-311.2 Troubleshooting Table for SynthesizerTable 11-2. Tr

6880309N62-C June, 2005Test Equipment, Service Aids, and Service Tools: Service Aids 1-30180386A78 Illuminated magnifying glass with lens attachmentIl

June, 2005 6880309N62-C11-4 UHF Troubleshooting Tables: Troubleshooting Table for Transmitter11.3 Troubleshooting Table for TransmitterTable 11-3. Tr

6880309N62-C June, 2005UHF Troubleshooting Tables: Troubleshooting Table for Transmitter 11-5Poor TX range, conducted power OK1. RF test jack defectiv

June, 2005 6880309N62-C11-6 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals11.4 Troubleshooting Table for Board and IC Sign

6880309N62-C June, 2005UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-7U110RF Power Amp1 RF input 0 (TX mode)2 Vgg (gat

June, 2005 6880309N62-C11-8 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsU201Freq Synthesizer24 Ref osc XTAL2 025 Ref osc

6880309N62-C June, 2005UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-9U251VCO / Buffer12 Prescaler output 2.2613 TX sw

June, 2005 6880309N62-C11-10 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsU401Microprocessor10 PB1_ADDR9 3.0511 PB2_ADDR1

6880309N62-C June, 2005UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-11U401Microprocessor46 PH1_PW2 3.0047 PH0_PW1 3.2

June, 2005 6880309N62-C11-12 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsU401Microprocessor82 PA3_IC4_OC5_OC1 3.0083 PA4

6880309N62-C June, 2005UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-13U404Flash ROM10 A16 3.1711 A15 0.3012 A12 0.221

June, 2005 6880309N62-C1-4 Test Equipment, Service Aids, and Service Tools: Service AidsProgramming/Test CableFigure 1-1. Programming/Test CableFigur

June, 2005 6880309N62-C11-14 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsU451ASFIC_CMP14 GCB1 general purpose output 015

6880309N62-C June, 2005UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-15U480Dual Opamp1 Unit 1 output 2.482 Unit 1 (-)

June, 2005 6880309N62-CNotes:11-16 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals

Chapter 12 UHF Schematic Diagrams, Overlays, and Parts Lists12.1 IntroductionThis section provides schematic diagrams, overlays, and parts lists for t

June, 2005 6880309N62-C12-2 UHF Schematic Diagrams, Overlays, and Parts Lists: Introduction7. Circuit Block Interconnection Legend:301-400 DC Regulati

6880309N62-C June, 2005UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic 12-312.1.2 Six Layer Circuit BoardFigure 12

June, 2005 6880309N62-CThis Page Intentionally Left Blank12-4 UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic

UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-568810309N62-C June, 2005Chapter 12 UHF (403-440 MHz) Schematic Diag

12-6 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)June, 2005 68810309N62-C0.79V4.2VUHF R1 Front End0.1uFC99R205.6KR21

UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-768810309N62-C June, 20055V for 25kHzRX Back End (Overtone)0V for 12

Chapter 2 DC Power Distribution2.1 DC Regulation and DistributionA block diagram of the DC power distribution throughout the radio is shown in Figure

12-8 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)June, 2005 68810309N62-C100C2020V3V0VTX: 3VRX: 0V14R06150kNUR202C20

UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-968810309N62-C June, 2005UHF R1 VCO3.2V to 9.5V4.5VRX: 0VTX: 3VTX_SW

12-10 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)June, 2005 68810309N62-CUHF R1 TxD1214880973Z02BAR63-02W150R12018n

UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-1168810309N62-C June, 2005AUDI O DC_REGULATION MICROPROCESSOR ACCESS

12-12 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)June, 2005 68810309N62-CEEPROMGREEN LEDRED LEDMicroprocessorFLASHS

UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-1368810309N62-C June, 200525146ACCESSORY CONNECTORINTERNALSPEAKER0No

12-14 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)June, 2005 68810309N62-C12DC RegulationQ4933100KR32247pFC301100R50

UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-1568810309N62-C June, 2005C1C2C3C4C5C6C7C8C9C10C11C12C21C23C25C27C28

12-16 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)June, 2005 68810309N62-CC13C14C20C26C41C42C43C44C45C49C51C52 C53C5

UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-1768810309N62-C June, 2005UHF (403-440 MHz) Radio Parts List (848663

Product Safety and RF Exposure ComplianceATTENTION!This radio is restricted to occupational use only to satisfy FCC RF energy exposure requirements. B

June, 2005 6880309N62-C2-2 DC Power Distribution: DC Regulation and DistributionWhen the radio is turned on, SWB+ is present and is applied to:• trans

12-18 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)June, 2005 68810309N62-CC406 2113743N50 CAP, 150pFC407 2113743L17

UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-1968810309N62-C June, 2005R51 0662057M43 RES, 51R52 0662057N01 RES,

12-20 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O)June, 2005 68810309N62-C* Motorola Depot Servicing onlyU201* 51859

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-216880309N62-C June, 2005Chapter 12 UHF (438-470 MHz) Schematic Diag

12-22 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)June, 2005 6880309N62-C-7.5 dBm18 mV (RF)-10.3 dBm13.2 mV (RF)+7.5

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-236880309N62-C June, 20052.14 V0 V (25kHz)2.8 V (12.5 kHz)0 V (25 kH

12-24 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)June, 2005 6880309N62-C112.6 mV (RF)2.8 V (TYP)3V4.5V0VTX: 3VRX: 0

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-256880309N62-C June, 20051.64 V (RX)0.98 V (RX)4.97 V (RX)293 mV RF

12-26 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)June, 2005 6880309N62-C3.6 V (Lo) (TYP, TX)4.4 V (Hi)3.3 V (TX)0 V

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-276880309N62-C June, 2005AUDIODC_REGULATIONMICROPROCESSORCONNECTORAC

Chapter 3 Controller Theory of Operation3.1 ControllerThe controller provides the following functions:• interface with controls and indicators• serial

12-28 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)June, 2005 6880309N62-CGREEN LEDEEPROMRED LEDFLASHSRAM1000pFQ402C4

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-296880309N62-C June, 200505V_A5V5V_A114 mV (RF)150 mV RMS (25 kHz)

12-30 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)June, 2005 6880309N62-C5 V7.5 V (ON)0 V (OFF)3.3 V (ON)0 V (OFF)0

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-316880309N62-C June, 2005C1C2C3C4C5C6C7C8C9C10C11C12C21C23C25C27C28C

12-32 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)June, 2005 6880309N62-CC20C26C41C42C43C44C45C49C51C52C53C55C56C57C

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-336880309N62-C June, 2005UHF (438-470 MHz) Radio Parts List (8486348

12-34 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)June, 2005 6880309N62-CC416 2113743L17 1000 pFC417 2113743L17 1000

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-356880309N62-C June, 2005R72 0662057M64 390R73 0662057M80 1.8KR74 06

12-36 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A)June, 2005 6880309N62-C* Motorola Depot Servicing onlyU401* 510222

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-376880309N62-C June, 2005Chapter 12 UHF (438-470 MHz) Schematic Diag

June, 2005 6880309N62-C3-2 Controller Theory of Operation: Controller3.1.1.1 Memory UsageRadio operation is controlled by software that is stored in

12-38 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)June, 2005 6880309N62-C18 mV (RF)-7.5 dBm-10.3 dBm13.2 mV (RF)363

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-396880309N62-C June, 2005280 mV (RF)500 mV (RF)100 mV RMS (25 kHz)50

12-40 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)June, 2005 6880309N62-CY2012.7pF45J68LOCK: 3 V4.5 VNUNU47kRX: 0 V3

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-416880309N62-C June, 20053.5 V to 10 V4.5 VRX: 0 VTX: 3 V0.98 V (Rx)

12-42 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)June, 2005 6880309N62-C3.3 V (Tx)7.5 V (Rx)0 V (Tx)4.4 V (Hi)3.6 V

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-436880309N62-C June, 2005DC_REGULATIONAUDIOMICROPROCESSORACCESSORY/K

12-44 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)June, 2005 6880309N62-CEEPROMGREEN LEDRED LEDFLASHSRAMD3_3V.01uF0.

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-456880309N62-C June, 20050.1uF10K243R522100KVHF UHFR513R515R516R517

12-46 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)June, 2005 6880309N62-C7.5 V0 V (Tx)5 V (Rx)0 V (Tx)0 V (Rx)5 V (T

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-476880309N62-C June, 2005C1C2C3C4C5C6C7C8C9C10C11C12C21C23C25C27C28C

6880309N62-C June, 2005Controller Theory of Operation: Controller 3-3In order for each circuit block to respond only to the data intended for it, each

12-48 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)June, 2005 6880309N62-CC13C14C20C26C41C42C43C44C45C49C51C52C53C55C

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-496880309N62-C June, 2005UHF (438-470 MHz) Radio Parts List (8486348

12-50 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)June, 2005 6880309N62-CC400 Not_Placed CAP, .022uFC401 2113743M24

UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-516880309N62-C June, 2005Q481 Not_Placed MMBT3906Q482 Not_Placed MMB

12-52 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C)June, 2005 6880309N62-C* Motorola Depot Servicing onlySH50 2686423

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-536880309N62-C June, 2005Chapter 12 UHF (465-495 MHz) Schematic Diag

12-54 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)June, 2005 6880309N62-C0.79V4.2VUHF R3 Front EndC321.6%6.2pF10pF1.

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-556880309N62-C June, 20055V for 25kHzRX Back End (Overtone)0V for 12

12-56 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)June, 2005 6880309N62-CPRE_GNDReference OscillatorNU0.01uF14R06NUR

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-576880309N62-C June, 2005UHF R3 VCO3.2V to 9.5V4.5VRX: 0VTX: 3V390pF

June, 2005 6880309N62-C3-4 Controller Theory of Operation: ControllerThe microprocessor reset line (pin 94) can be controlled directly by the digital

12-58 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)June, 2005 6880309N62-C0603UHF R3 TxR16210K4.7KR1061uFC115L1027.5n

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-596880309N62-C June, 2005AUDI O DC_REGULATION MICROPROCESSOR ACCESSO

12-60 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)June, 2005 6880309N62-CEEPROMGREEN LEDRED LEDMicroprocessorFLASHSR

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-616880309N62-C June, 200525146ACCESSORY CONNECTORINTERNALSPEAKER0Not

12-62 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)June, 2005 6880309N62-C12DC RegulationQ4933100KR32247pFC301100R507

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-636880309N62-C June, 2005C1C2C3C4C5C6C7C8C9C10C11C12C21C23C25C27C28C

12-64 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)June, 2005 6880309N62-CC13C14C20C26C41C42C43C44C45C49C51C52C53C55C

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-656880309N62-C June, 2005UHF (465-495 MHz) Radio Parts List (8486634

12-66 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)June, 2005 6880309N62-CC401 2113743M24 CAP, 0.1uFC402 2113743L17 C

UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-676880309N62-C June, 2005R22 0662057M92 RES, 5.6KR23 0662057N09 RES,

6880309N62-C June, 2005Controller Theory of Operation: Controller 3-5• 2.5 volt dc reference source• Microprocessor clock generation (from the 16.8 MH

12-68 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O)June, 2005 6880309N62-C* Motorola Depot Servicing onlyU52 5109522E

CP150™/CP200™Commercial SeriesTwo-Way Radio Detailed Service ManualMOTOROLA, The Stylized M logo, and Radius are trademarks of Motorola, Inc.All other

June, 2005 6880309N62-C3-6 Controller Theory of Operation: Controller3.1.2.4 PTT CircuitsThe internal side-mounted PTT switch (S441) is sensed direct

Chapter 4 136-162 MHz VHF Theory Of Operation4.1 IntroductionThis chapter provides a detailed theory of operation for the radio components. Schematic

June, 2005 6880309N62-C4-2 136-162 MHz VHF Theory Of Operation: VHF Receiverconstant at 6.2 mA regardless of device and temperature variations, for op

6880309N62-C June, 2005136-162 MHz VHF Theory Of Operation: VHF Transmitter 4-34.3 VHF TransmitterThe VHF transmitter covers the range of 136-162 MHz.

iTable of ContentsForewordProduct Safety and RF Exposure Compliance... inside c

June, 2005 6880309N62-C4-4 136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry4.3.4 Antenna Matching NetworkThe harmonic filter pr

6880309N62-C June, 2005136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 4-5Transmit modulation from the ASFICcmp (U451 pin 40)

June, 2005 6880309N62-C4-6 136-162 MHz VHF Theory Of Operation: VHF Frequency Generation CircuitryOne of the auxiliary outputs of the synthesizer IC (

6880309N62-C June, 2005136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 4-7C267, and varactor D261. High-port audio modulation

June, 2005 6880309N62-C4-8 136-162 MHz VHF Theory Of Operation: VHF Frequency Generation CircuitryNotes:

Chapter 5 146-174 MHz VHF Theory Of Operation5.1 IntroductionThis chapter provides a detailed theory of operation for the radio components. Schematic

June, 2005 6880309N62-C5-2 146-174 MHz VHF Theory Of Operation: VHF Receiverconstant at 6.2 mA regardless of device and temperature variations, for op

6880309N62-C June, 2005146-174 MHz VHF Theory Of Operation: VHF Transmitter 5-35.3 VHF TransmitterThe VHF transmitter covers the range of 146-174 MHz.

June, 2005 6880309N62-C5-4 146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry5.3.4 Antenna Matching NetworkThe harmonic filter pr

6880309N62-C June, 2005146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 5-5Transmit modulation from the ASFICcmp (U451 pin 40)

ii Table of ContentsJune, 2005 6880309N62-C4.2.1 Receiver Front-End...

June, 2005 6880309N62-C5-6 146-174 MHz VHF Theory Of Operation: VHF Frequency Generation CircuitryOne of the auxiliary outputs of the synthesizer IC (

6880309N62-C June, 2005146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 5-7C267, and varactor D261. High-port audio modulation

June, 2005 6880309N62-C5-8 146-174 MHz VHF Theory Of Operation: VHF Frequency Generation CircuitryNotes:

Chapter 6 VHF Troubleshooting Tables6.1 Troubleshooting Table for ReceiverTable 6-1. Troubleshooting Table for Receiver Symptom Possible Causes Proce

June, 2005 6880309N62-C6-2 VHF Troubleshooting Tables: Troubleshooting Table for ReceiverNo Audio1. Synthesizer out of lock Verify U201-4 is at 3 V dc

6880309N62-C June, 2005VHF Troubleshooting Tables: Troubleshooting Table for Synthesizer 6-36.2 Troubleshooting Table for SynthesizerTable 6-2. Troub

June, 2005 6880309N62-C6-4 VHF Troubleshooting Tables: Troubleshooting Table for Transmitter6.3 Troubleshooting Table for TransmitterTable 6-3. Troub

6880309N62-C June, 2005VHF Troubleshooting Tables: Troubleshooting Table for Transmitter 6-5Low Power1. Low TX injection Check that RF level at jct. R

June, 2005 6880309N62-C6-6 VHF Troubleshooting Tables: Troubleshooting Table for TransmitterNo EXT MIC audio 1. Mic bias fault Verify approx 1.8 V dc

6880309N62-C June, 2005VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-76.4 Troubleshooting Table for Board and IC Signal

Table of Contents iii6880309N62-C June, 2005Figure 7-6. VHF (136-162 MHz) Synthesizer Schematic Diagram (8486769Z02-A)... 7-8Fi

June, 2005 6880309N62-C6-8 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsU110RF Power Amp1 RF input 0 (TX mode)2 Vgg (gate

6880309N62-C June, 2005VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-9U201Freq Synthesizer24 Ref osc XTAL2 025 Ref osc

June, 2005 6880309N62-C6-10 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsU251VCO / Buffer12 Prescaler output 2.2613 TX sw

6880309N62-C June, 2005VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-11U401Microprocessor10 PB1_ADDR9 3.0511 PB2_ADDR10

June, 2005 6880309N62-C6-12 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsU401Microprocessor46 PH1_PW2 3.0047 PH0_PW1 3.23

6880309N62-C June, 2005VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-13U401Microprocessor82 PA3_IC4_OC5_OC1 3.0083 PA4_

June, 2005 6880309N62-C6-14 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsU404Flash ROM10 A16 3.1711 A15 0.3012 A12 0.2213

6880309N62-C June, 2005VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-15U451ASFIC_CMP14 GCB1 general purpose output 015

June, 2005 6880309N62-C6-16 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC SignalsNotes:U480Dual Opamp1 Unit 1 output 2.482 Unit 1

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-56880309N62-C June, 2005Chapter 7 VHF (136-162 MHz) Schematic Diagram

iv Table of ContentsJune, 2005 6880309N62-CChapter 7 VHF (146-174 MHz) Schematic Diagrams, Overlays, andParts Lists (8486342Z13-C) ...

7-6 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 2005 6880309N62-C 700mV (RF)3.95V (Rx)2.0V (Rx)3.38V (Rx)3.95V

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-76880309N62-C June, 20055V for 25kHzRX Back End (Overtone)0V for 12.5

7-8 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 2005 6880309N62-CC206C201NURX: 0V3.0V to 8.0V4.5VUNLOCK: 0VD20

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-96880309N62-C June, 20053.0V to 8.0V4.5VRX: 0VTX: 3V206 mV (RF)850 mV

7-10 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 2005 6880309N62-C0.9 V (Tx)7.5 V0 V (Rx)0 V (Rx)7.25 V (Tx)1.

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-116880309N62-C June, 2005DC_REGULATIONAUDIOMICROPROCESSORACCESSORY/KE

7-12 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 2005 6880309N62-CEEPROMGREEN LEDRED LEDFLASHSRAMVSS4WP3CS1HOL

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-136880309N62-C June, 20052.3 V150 mV RMS (25 kHz) (Rx)75 mv RMS (12.5

7-14 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 2005 6880309N62-C5 V (Rx)0 V (Tx)0 V (Rx)5 V (Tx)3.3 V (Rx)0

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-156880309N62-C June, 2005C1C2C3C4C5C6C7C8C9C22C23C24C25C29C30C31C32C3

Table of Contents v6880309N62-C June, 20058.4.2 Voltage Controlled Oscillator (VCO) ...

7-16 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 2005 6880309N62-CC20C26C40C41C42C43C44C51C52C53C55C56C57C58C5

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-176880309N62-C June, 2005VHF (136-162 MHz) Radio Parts List (8486769Z

7-18 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 2005 6880309N62-CC410 2311049A57 CAP, 10uFC411 2113743M24 CAP

VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-196880309N62-C June, 2005Q520 5180159R01 dual NPN, IMX1R20 0662057U97

7-20 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A)June, 2005 6880309N62-C* Motorola Depot Servicing onlyS444 1880619Z

VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-216880309N62-C June, 2005Chapter 7 VHF 136-162 MHz Schematic Diagrams,

7-22 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-C 700mV (RF)485mV (RF)445mV (RF)705mV (RF)3.9V

VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-236880309N62-C June, 20055V for 25kHzRX Back End (Overtone)0V for 12.5k

7-24 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CC206C201NURX: 0V3.0V to 8.0V4.5VUNLOCK: 0VD201

VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-256880309N62-C June, 20053.0V to 8.0V4.5VRX: 0VTX: 3V206 mV (RF)850 mV

vi Table of ContentsJune, 2005 6880309N62-CChapter 12 UHF (403-440 MHz) Schematic Diagrams, Overlays, andParts Lists (8486635Z03-O) ...

7-26 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-C0.9 V (Tx)7.5 V0 V (Rx)0 V (Rx)7.25 V (Tx)1.8V

VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-276880309N62-C June, 2005DC_REGULATIONAUDIOMICROPROCESSORACCESSORY/KEYP

7-28 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CEEPROMGREEN LEDRED LEDFLASHSRAMVSS4WP3CS1HOLD7

VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-296880309N62-C June, 20052.3 V150 mV RMS (25 kHz) (Rx)75 mv RMS (12.5 k

7-30 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-C5 V (Rx)0 V (Tx)0 V (Rx)5 V (Tx)3.3 V (Rx)0 V

VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-316880309N62-C June, 2005C410C412C413C418C419C421C422C430C431C432C433C4

7-32 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CC157C121C158C122C130C132C131C135C133C134C140C1

VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-336880309N62-C June, 2005VHF (136-162 MHz) Radio Parts List (8486769Z04

7-34 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CC410 2313960D07 CAP, 10uFC411 2113946K02 CAP,

VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-356880309N62-C June, 2005R53 0613952R13 RES, 33KR54 0613952Q90 RES, 510

Table of Contents vii6880309N62-C June, 2005Figure 12-35. UHF (438-470 MHz) Audio Circuitry Schematic Diagram (8486348Z13-C)... 12-45Fig

7-36 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C)June, 2005 6880309N62-CT41 2515121H01 Balun TransformerT42 2515121H01

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-216880309N62-C June, 2005Chapter 7 VHF (146-174 MHz) Schematic Diagra

7-22 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)June, 2005 6880309N62-C 125 mV (RF)500 mV (RF)0.74 V (RX)3.9 V (RX)

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-236880309N62-C June, 2005500 mV (RF)320 mV (RF)390 mV (RF)550 mV (RF)

7-24 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)June, 2005 6880309N62-C205 mV (RF)44 mV (RF)107 mV (RF)2.4 V (TYP)N

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-256880309N62-C June, 2005NU1200pFC270286 mV (RF)1.89 V (RX)1.35 V (RX

7-26 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)June, 2005 6880309N62-C1.5 V (TX)4.9 V (TX)1500 mV (RF)1.79 V (Lo)

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-276880309N62-C June, 2005AUDIODC_REGULATIONMICROPROCESSORCONNECTORACC

7-28 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A)June, 2005 6880309N62-CGREEN LEDEEPROMRED LEDFLASHSRAM1000pFQ402C41

VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-296880309N62-C June, 2005NU10 mV RMS (TX)1.5 VINTERNAL SPEAKERACCESSO