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Motorola CP150 Service Manual

Commercial series
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CP150
/CP200
Commercial Series
Two-Way Radio Detailed Service Manual

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  Summary of Contents for Motorola CP150

  • Page 1 CP150 /CP200 ™ ™ Commercial Series Two-Way Radio Detailed Service Manual...
  • Page 2: Product Safety And Rf Exposure Compliance

    Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in the sale of a product.
  • Page 3: Table Of Contents

    Table of Contents Foreword Product Safety and RF Exposure Compliance ................inside cover Computer Software Copyrights ....................inside cover Document Copyrights ........................ inside cover Disclaimer..........................inside cover List of Figures ............................viii List of Tables ..............................xi Related Publications...........................xi Chapter 1 Test Equipment, Service Aids, and Service Tools..
  • Page 4 Table of Contents 4.2.1 Receiver Front-End......................4-1 4.2.2 Receiver Back-End ......................4-2 VHF Transmitter..........................4-3 4.3.1 Transmit Power Amplifier ....................4-3 4.3.2 Antenna Switch ......................... 4-3 4.3.3 Harmonic Filter........................4-3 4.3.4 Antenna Matching Network....................4-4 4.3.5 Power Control ........................4-4 VHF Frequency Generation Circuitry.....................
  • Page 5 Table of Contents Figure 7-6. VHF (136-162 MHz) Synthesizer Schematic Diagram (8486769Z02-A)......7-8 Figure 7-7. VHF (136-162 MHz) Voltage Controlled Oscillator Schematic Diagram (8486769Z02-A)....................7-9 Figure 7-8. VHF (136-162 MHz) Transmitter and Power Control Schematic Diagram (8486769Z02-A)....................7-10 Figure 7-9. VHF (136-162 MHz) Controller Interconnect Schematic Diagram (8486769Z02-A) ..
  • Page 6 Table of Contents Chapter 7 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) ..........7-37 Figure 7-39. VHF (146-174 MHz) Radio Circuit Block Interconnect Diagram (8486342Z13-C) ..7-37 Figure 7-40. VHF (146-174 MHz) Receiver Front End Schematic Diagram (8486342Z13-C).... 7-38 Figure 7-41.
  • Page 7 Table of Contents 8.4.2 Voltage Controlled Oscillator (VCO) ................. 8-6 Chapter 9 438-470 MHz UHF Theory Of Operation ......9-1 Introduction ............................ 9-1 UHF Receiver ..........................9-1 9.2.1 Receiver Front End ......................9-1 9.2.2 Receiver Back End ......................9-2 UHF Transmitter ..........................9-3 9.3.1 Transmitter Power Amplifier .....................
  • Page 8 Table of Contents Chapter 12 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) ..........12-5 Figure 12-3. UHF (403-440 MHz) Radio Circuit Block Diagram (8486635Z03-O)......12-5 Figure 12-4. UHF (403-440 MHz) Receiver Front End Schematic Diagram (8486635Z03-O) ... 12-6 Figure 12-5.
  • Page 9 Table of Contents Figure 12-35. UHF (438-470 MHz) Audio Circuitry Schematic Diagram (8486348Z13-C)....12-45 Figure 12-36. UHF (438-470 MHz) DC Regulation Schematic Diagram (8486348Z13-C)....12-46 Figure 12-37. UHF (438-470 MHz) Board Component Side View (8486348Z13-C) ......12-47 Figure 12-38. UHF (438-470 MHz) Board Solder Side View (8486348Z13-C)........12-48 UHF (438-470 MHz) Radio Parts List (8486348Z13-C) ..............
  • Page 10: List Of Figures

    viii Table of Contents List of Figures Figure 1-1. Programming/Test Cable....................1-4 Figure 1-2. Wiring of the Connectors ....................1-4 Figure 2-1. DC Power Distribution Block Diagram................2-1 Figure 4-1. VHF Receiver Block Diagram................... 4-1 Figure 4-2. VHF Transmitter Block Diagram..................4-3 Figure 4-3.
  • Page 11 Table of Contents Figure 7-33. VHF (146-174 MHz) Controller Interconnect Schematic Diagram (8486342Z09-A) ..7-27 Figure 7-34. VHF (146-174 MHz) Microprocessor Circuitry Schematic Diagram (8486342Z09-A) ... 7-28 Figure 7-35. VHF (146-174 MHz) Audio Circuitry Schematic Diagram (8486342Z09-A) ....7-29 Figure 7-36. VHF (146-174 MHz) DC Regulation Schematic Diagram (8486342Z09-A) ....7-30 Figure 7-37.
  • Page 12 Table of Contents Figure 12-6. UHF (403-440 MHz) Synthesizer Schematic Diagram (8486635Z03-O) ....... 12-8 Figure 12-7. UHF (403-440 MHz) Voltage Controlled Oscillator Schematic Diagram (8486635Z03-O) ....................12-9 Figure 12-8. UHF (403-440 MHz) Transmitter and Power Control Schematic Diagram (8486635Z03-O) .................... 12-10 Figure 12-9.
  • Page 13: List Of Tables

    Troubleshooting Table for Receiver ................11-1 Table 11-2. Troubleshooting Table for Synthesizer................11-3 Table 11-3. Troubleshooting Table for Transmitter ................11-4 Table 11-4. Troubleshooting Table for Board and IC Signals ............11-6 Related Publications CP150/CP200 Basic Service Manual .....................6880309N61 CP150/CP200 User Guide......................6880309N60 6880309N62-C June, 2005...
  • Page 14 Table of Contents June, 2005 6880309N62-C...
  • Page 15: Chapter 1 Test Equipment, Service Aids, And Service Tools

    Chapter 1 Test Equipment, Service Aids, and Service Tools Test Equipment Table 1-1 lists test equipment required to service the CP150/CP200 Radios. Table 1-1. Recommended Test Equipment Motorola Part No. Description Characteristics Application R2600 series System analyzer This item will substitute for...
  • Page 16: Service Aids

    Service Aids Table 1-2 lists service aids recommended for working on the CP150/CP200 Radios. While all of these items are available from Motorola, most are standard shop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed.
  • Page 17 Test Equipment, Service Aids, and Service Tools: Service Aids Table 1-3. Recommended Service Tools (Continued) Motorola Part Description Application 0180386A78 Illuminated magnifying glass with lens attachment Illumination and magnification of components 0180302E51 Master lens system 0180386A82 Anti-static grounding kit Used during all radio assembly and disassembly pro-...
  • Page 18: Figure 1-1. Programming/Test Cable

    Test Equipment, Service Aids, and Service Tools: Service Aids Programming/Test Cable 25 POSITION 25 POSITION MALE CONNECTOR FEMALE CONNECTOR 36.0” CABLE 36.0” CABLE Figure 1-1. Programming/Test Cable 25 pin Male D Connector Components molded inside 2.5mm stereo and 3.5mm Orange 3.5mm Tip (Speaker +) Blue...
  • Page 19: Chapter 2 Dc Power Distribution

    Chapter 2 DC Power Distribution DC Regulation and Distribution A block diagram of the DC power distribution throughout the radio is shown in Figure 2-1. Accessories 20 pin Connector Audio Power Keypad/Option Board Amplifier Vdda Vdda Regulator UNSWB+ SWB+ 7.5V Vddd Vddd Battery...
  • Page 20: Table 2-1. Voltage Regulators

    DC Power Distribution: DC Regulation and Distribution When the radio is turned on, SWB+ is present and is applied to: • transistor switch Q494 (pins 1 and 6) which turns on Q493 • RX audio power amplifier U490 • voltage divider R420/R421 and port PE0, a microprocessor A/D input which measures battery voltage and radio on/off status The output of FET switch Q493 is applied to the control pins of regulators U310, U320 and U330, turning them on.
  • Page 21: Chapter 3 Controller Theory Of Operation

    Chapter 3 Controller Theory of Operation Controller The controller provides the following functions: • interface with controls and indicators • serial bus control of major radio circuit blocks • encoding and/or decoding of selective signaling formats such as PL, DPL, MDC1200 and Quik- Call II •...
  • Page 22: Memory Usage

    Controller Theory of Operation: Controller 3.1.1.1 Memory Usage Radio operation is controlled by software that is stored in external Flash ROM memory (U404). Radio parameters and customer specific information is stored in external EEPROM (U402). The operating status of the radio is maintained in RAM located within the microprocessor. When the radio is turned off, the operating status of the radio is written to EEPROM before operating voltage is removed from the microprocessor.
  • Page 23: Interface To Rss Programming

    Controller Theory of Operation: Controller In order for each circuit block to respond only to the data intended for it, each peripheral has its own chip select (or chip enable) line. The device will only respond to data when its enable line is pulled low by one of the microprocessor ports, as follows: •...
  • Page 24: Boot Mode Control

    Controller Theory of Operation: Controller The microprocessor reset line (pin 94) can be controlled directly by the digital 3.3 V regulator (U320 pin 7), the microphone jack (part of accessory connector J471) via Q472 and Q471, and the microprocessor itself. U320 pulls the reset line low if the digital 3.3 V source loses regulation. This prevents possible MOS latch-up or overwriting of registers in the microprocessor because the reset line is higher in voltage than the microprocessor VDD ports (U401 pins 12, 39, 59, 88).
  • Page 25: Audio Power Amplifier

    The Motorola RLN4460 Portable Test Set and AAPMKN4004 Programming Test Cable provide the proper interface between the radio's ungrounded audio output and ground-referenced test equipment.
  • Page 26: Ptt Circuits

    Controller Theory of Operation: Controller 3.1.2.4 PTT Circuits The internal side-mounted PTT switch (S441) is sensed directly by microprocessor port PJ0 (U401 pin 71). External mic PTT is sensed by measuring the current drawn through the accessory connector (J471-4) by the mic cartridge (which is in series with the accessory PTT switch). This current is drawn through the base (pin 5) and emitter (pin 4) of a transistor in Q470, causing its collector (pin 3) to supply a logic-high to microprocessor port PJ1 (pin 72).
  • Page 27: Chapter 4 136-162 Mhz Vhf Theory Of Operation

    Chapter 4 136-162 MHz VHF Theory Of Operation Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 7 of this manual. VHF Receiver The VHF receiver covers the range of 136-162 MHz and provides switchable IF bandwidth for use with 12.5 kHz or 20/25 kHz channel spacing systems.
  • Page 28: Receiver Back-End

    136-162 MHz VHF Theory Of Operation: VHF Receiver constant at 6.2 mA regardless of device and temperature variations, for optimum dynamic range and noise figure. The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 3-pole series-coupled resonator design having a 3 dB bandwidth of 54 MHz and insertion loss of 1.8 dB.
  • Page 29: Vhf Transmitter

    136-162 MHz VHF Theory Of Operation: VHF Transmitter VHF Transmitter The VHF transmitter covers the range of 136-162 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (5 watts) and low power (1 watt), or is factory preset to 2 watts.
  • Page 30: Antenna Matching Network

    136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 4.3.4 Antenna Matching Network The harmonic filter presents a 50 Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency.
  • Page 31: Fractional-N Synthesizer

    136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry Transmit modulation from the ASFICcmp (U451 pin 40) is applied to U201 pin 10 (MOD_IN). An electronic attenuator in the ASFICcmp adjusts overall transmitter deviation by varying the audio level applied to the synthesizer IC.
  • Page 32: Voltage Controlled Oscillator (Vco)

    136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit. DATA (U401 Pin 100) DATA LOCK LOCK (U401 Pin 56)
  • Page 33: Figure 4-5. Vhf Vco Block Diagram

    136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO. AUX3 (U201 Pin 2) TRB_IN Pin 20 Pin 19 Pin 7 TX/RX/BS...
  • Page 34 136-162 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C...
  • Page 35: Chapter 5 146-174 Mhz Vhf Theory Of Operation

    Chapter 5 146-174 MHz VHF Theory Of Operation Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 7 of this manual. VHF Receiver The VHF receiver covers the range of 146-174 MHz and provides switchable IF bandwidth for use with 12.5 kHz or 20/25 kHz channel spacing systems.
  • Page 36: Receiver Back-End

    146-174 MHz VHF Theory Of Operation: VHF Receiver constant at 6.2 mA regardless of device and temperature variations, for optimum dynamic range and noise figure. The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 3-pole series-coupled resonator design having a 3 dB bandwidth of 58 MHz and insertion loss of 1.8 dB.
  • Page 37: Vhf Transmitter

    146-174 MHz VHF Theory Of Operation: VHF Transmitter VHF Transmitter The VHF transmitter covers the range of 146-174 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (5 watts) and low power (1 watt), or is factory preset to 2 watts.
  • Page 38: Antenna Matching Network

    146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry 5.3.4 Antenna Matching Network The harmonic filter presents a 50 Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency.
  • Page 39: Fractional-N Synthesizer

    146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry Transmit modulation from the ASFICcmp (U451 pin 40) is applied to U201 pin 10 (MOD_IN). An electronic attenuator in the ASFICcmp adjusts overall transmitter deviation by varying the audio level applied to the synthesizer IC.
  • Page 40: Voltage Controlled Oscillator (Vco)

    146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit. DATA (U401 Pin 100) DATA LOCK LOCK (U401 Pin 56)
  • Page 41: Figure 5-5. Vhf Vco Block Diagram

    146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO. AUX3 (U201 Pin 2) TRB_IN Pin 20 Pin 19 Pin 7 TX/RX/BS...
  • Page 42 146-174 MHz VHF Theory Of Operation: VHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C...
  • Page 43: Chapter 6 Vhf Troubleshooting Tables

    Chapter 6 VHF Troubleshooting Tables Troubleshooting Table for Receiver Table 6-1. Troubleshooting Table for Receiver Symptom Possible Causes Procedure Corrective Action Radio Dead (no 1. Battery dead or defec- Substitute known good battery or Charge or replace battery. turn-on beep, no tive.
  • Page 44 VHF Troubleshooting Tables: Troubleshooting Table for Receiver Table 6-1. Troubleshooting Table for Receiver (Continued) Symptom Possible Causes Procedure Corrective Action No Audio 1. Synthesizer out of lock Verify U201-4 is at 3 V dc. Troubleshoot synthesizer/VCO circuits. 2. Defective IFIC Verify audio is present at U51-8.
  • Page 45: Troubleshooting Table For Synthesizer

    VHF Troubleshooting Tables: Troubleshooting Table for Synthesizer Troubleshooting Table for Synthesizer Table 6-2. Troubleshooting Table for Synthesizer Symptom Possible Causes Procedure Corrective Action Synthesizer Out of 1. VCO fault Verify oscillator is working, check RF Check VCO tank components Lock (RX mode level at U251-10 per schematic.
  • Page 46: Troubleshooting Table For Transmitter

    VHF Troubleshooting Tables: Troubleshooting Table for Transmitter Troubleshooting Table for Transmitter Table 6-3. Troubleshooting Table for Transmitter Symptom Possible Causes Procedure Corrective Action No Transmit (no TX 1. PTT switch defective. Verify U401-71 goes low when PTT Replace PTT switch S441. LED indication) is pressed.
  • Page 47 VHF Troubleshooting Tables: Troubleshooting Table for Transmitter Table 6-3. Troubleshooting Table for Transmitter (Continued) Symptom Possible Causes Procedure Corrective Action Low Power 1. Low TX injection Check that RF level at jct. R100/ Check U251, L291-292, C290- R101 per schematic. 291.
  • Page 48 VHF Troubleshooting Tables: Troubleshooting Table for Transmitter Table 6-3. Troubleshooting Table for Transmitter (Continued) Symptom Possible Causes Procedure Corrective Action No EXT MIC audio 1. Mic bias fault Verify approx 1.8 V dc across EXT Check Q470. R475, R477, MIC cartridge in TX mode. Verify L471.
  • Page 49: Troubleshooting Table For Board And Ic Signals

    VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals IC Designator Pin Function DC Voltage Comments (Condition) RF input 44.85 MHz 1.20 IFIC RF input decoupling 1.20 2nd LO osc output...
  • Page 50 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U110 RF input (TX mode) RF Power Amp Vgg (gate bias) 2.65 (typ) (TX mode) (4.25 V typ at VHF) 6.59 (TX mode)
  • Page 51 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U201 Ref osc XTAL2 Freq Synthesizer Ref osc warp output 3.00 Superfilter cap 4.48 Superfilter base (NU) 3.76...
  • Page 52 6-10 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U251 Prescaler output 2.26 VCO / Buffer TX switch output (NU) 0.06 Vcc_BUFFERS 3.00...
  • Page 53 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-11 Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U401 PB1_ADDR9 3.05 Microprocessor PB2_ADDR10 0.16 3.23 PBO_ADDR8 3.05 PB5_ADDR13 0.13 PG1_XA14 0.20 PG4_XA17...
  • Page 54 6-12 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U401 PH1_PW2 3.00 Microprocessor PH0_PW1 3.23 Synth chip select XIRQ 3.00 1.48 RX enable 0.01...
  • Page 55 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-13 Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U401 PA3_IC4_OC5_OC1 3.00 Microprocessor PA4_OC4_OC1 Squelch detect input PA5_OC3_OC1 Channel activity input PA6_OC2_OC1 PA7_PA1_OC1 VSSR...
  • Page 56 6-14 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U404 3.17 Flash ROM 0.30 0.22 3.03 3.08 3.06 0.24 3.08 3.05 3.05 0.69...
  • Page 57 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 6-15 Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U451 GCB1 general purpose output ASFIC_CMP GCB0 general purpose output 3.00 BW select (25 kHz mode) Squelch channel activity output To U401-84...
  • Page 58 6-16 VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Notes: Table 6-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U480 Unit 1 output 2.48 Dual Opamp Unit 1 (-) input 2.48 Unit 1 (+) input 2.46...
  • Page 59: Chapter 7 Vhf Schematic Diagrams, Overlays, And Parts Lists

    VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) Chapter 7 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) USWB+ USWB+ TX_ENA TX_ENA PWR_SET TX_VHF_R1 PWR_SET DEMOD DEMOD RX_BE RX_FE_VHF_R1 BW_SEL BW_SEL IF_IN IF_OUT RX_IN RX_OUT RSSI RSSI CONTROLLER MOD_OUT...
  • Page 60: Figure 7-4. Vhf (136-162 Mhz) Receiver Front End Schematic Diagram (8486769Z02-A)

    VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 5.0V (Rx) 0V (Tx) FE_5R 6.8K 1000pF 3.95V (Rx) UMT1 500mV (RF) 3.95V (Rx) IF_OUT FE_IF_OUT 560nH 3.38V (Rx) 1000pF 100nH 2.0V (Rx) 1000pF 0.1uF 6.8K 150nH 82pF 3.9V (Rx) 700mV (RF) 68nH 10pF...
  • Page 61: Figure 7-5. Vhf (136-162 Mhz) Receiver Back End Schematic Diagram (8486769Z02-A)

    VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) RX Back End (Overtone) U52-1 FL53 TC7W04F CFWC455E 0.1uF OUT 2 U52-2 100K TC7W04F IF_BAND_SEL 5V for 25kHz BW_SE L 0V for 12.5kHz 0.1uF FL54 CFWC455G 1 IN 47pF U52-3 3.3K SH50 SH52...
  • Page 62: Figure 7-6. Vhf (136-162 Mhz) Synthesizer Schematic Diagram (8486769Z02-A)

    VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) V_SF FN_V_SF 4.5V C231 C232 C233 1000pF 0.1uF 4.7uF R230 R247 110K 160K LOCK FN_LOCK LOCK: 3V UNLOCK: 0V WARP C204 470pF INDMULT SFOUT ADAPTSW CCOMP LOCK C241 REFSEL IADAPT 1200pF V_STEER IOUT...
  • Page 63: Figure 7-7. Vhf (136-162 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486769Z02-A)

    VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) V_SF V_SF L270 4.5V VCO_VSF R273 560nH C292 1200pF C270 C274 C285 1200pF R270 VCO_3V 0.1uF 0.1uF C272 0.1uF L282 R284 L292 R272 47nH 68nH 9.1K C273 R271 .01uF 8.2K 1200 mV (RF) R274 L271...
  • Page 64: Figure 7-8. Vhf (136-162 Mhz) Transmitter And Power Control Schematic Diagram (8486769Z02-A)

    7-10 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7.5 V USWB+ PA_USWB+ C170 0.1uF 0 V (Rx) 7.4 V (Rx) R171 0.15 V (Tx) Q171 TX_ENA Q170 MMBT3904 PA_TX_ENA 6.8K EMB10 1.8V (Tx) R524 0 V (Rx) C172 7.25 V (Tx) 1500pF...
  • Page 65: Figure 7-9. Vhf (136-162 Mhz) Controller Interconnect Schematic Diagram (8486769Z02-A)

    VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-11 SW_B+ OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET OPT_RX_AUD_SEND_DETECTOR DEMOD DEMOD CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO BW_SEL BW_SEL OPT_RX_AUD_RETURN CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL CNTL_16_8_MHZ E500 BK1005HM471 C500 C501 1000pF D3_3V...
  • Page 66: Figure 7-10. Vhf (136-162 Mhz) Microprocessor Circuitry Schematic Diagram (8486769Z02-A)

    7-12 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) D3_3V R410 R416 R417 C418 0.1uF D3_3V D3_3V TP405 D3_3V R411 R406 Q425 R401 220K 300K D3_3V R419 D3_3V D3_3V 4.7K C425 TP402 C419 D3_3V Q426 1000pF 100K Q410 R407 D3_3V R412...
  • Page 67: Figure 7-11. Vhf (136-162 Mhz) Audio Circuitry Schematic Diagram (8486769Z02-A)

    VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-13 150 mV RMS (25 kHz) (Rx) R523 75 mv RMS (12.5 kHz) (Rx) R516 R522 100K C512 C514 6.8pF 16pF R512 R514 Q520-2 150K 100K IMX1 5V_A R511 100K Q520-1 DEMOD R513...
  • Page 68: Figure 7-12. Vhf (136-162 Mhz) Dc Regulation Schematic Diagram (8486769Z02-A)

    7-14 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) USWB+ U310 TK71750S 7.5 V VOUT CTRL F301 DATA BYPASS C301 J301 C313 C303 C304 C310 C311 C312 390pF D301 .01uF VR301 .01uF .01uF .018uF 33uF 10uF MMBZ5250B D3_3V BATT_CHARGE 5 V (Rx) Q311...
  • Page 69: Figure 7-13. Vhf (136-162 Mhz) Board Top Side View (8486769Z02-A)

    VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-15 D301 R406 C488 C465 U425 R480 Q425 R408 C458 R405 C454 D425 Q426 C513 S444 C480 R401 R403 J471 R473 R470 R409 U451 FL54 R496 C470 L265 L255 C257 C473 R481 R472...
  • Page 70: Figure 7-14. Vhf (136-162 Mhz) Board Bottom Side View (8486769Z02-A)

    7-16 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) C140 L120 R206 C206 C220 R416 U151 R411 L132 L130 C417 C222 R121 R434 R502 R433 L140 C135 C131 R432 C221 FL51 R150 R501 C223 C157 C224 R120 R151 SH200 D121 R154...
  • Page 71 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-17 VHF (136-162 MHz) Radio Parts List (8486769Z02-A) Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2113743N42 CAP, 47pF...
  • Page 72 7-18 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C410 2311049A57 CAP, 10uF C477 2113743M24 CAP, 0.1uF D440...
  • Page 73 VHF (136-162 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486769Z02-A) 7-19 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q520 5180159R01 dual NPN, IMX1 R154 0662057V27 RES, 100K...
  • Page 74 Y201* 4880114R06 crystal, 16.8 MHz, 14R06 2580541Z02 transformer, balun Y202 Not_Placed 45J68 5186144B01 receiver system (IFIC), SA616 * Motorola Depot Servicing only 5109522E10 triple inverter, TC7W04F U110 0186438Z01 transmitter PA module, RA07M1317M_VHF U150 5113818A01 dual op amp, LM2904 U151...
  • Page 75: Figure 7-15. Vhf (136-162 Mhz) Radio Circuit Block Interconnect Diagram (8486769Z04-C)

    VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-21 Chapter 7 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) USWB+ USWB+ TX_ENA TX_ENA PWR_SET TX_VHF_R1 PWR_SET DEMOD DEMOD RX_BE RX_FE_VHF_R1 BW_SEL BW_SEL IF_IN IF_OUT RX_IN RX_OUT RSSI RSSI CONTROLLER...
  • Page 76: Figure 7-16. Vhf (136-162 Mhz) Receiver Front End Schematic Diagram (8486769Z04-C)

    7-22 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 1000pF 0.1uF 6.8K 3.9V (Rx) 150nH 82pF 700mV (RF) 68nH 10pF 36pF 68nH 27pF 33pF 68nH 485mV (RF) 18pF 22pF 3.3pF 68nH 30pF 1000pF 1000pF 0.74V (Rx) 30pF 68pF 68pF 30pF 125 mV (RF)
  • Page 77: Figure 7-17. Vhf (136-162 Mhz) Receiver Back End Schematic Diagram (8486769Z04-C)

    VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-23 RX Back End (Overtone) U52-1 FL53 TC7W04F CFWC455E 0.1uF OUT 2 U52-2 100K TC7W04F IF_BAND_SEL 5V for 25kHz BW_SE L 0V for 12.5kHz 0.1uF FL54 CFWC455G 1 IN 47pF U52-3 3.3K SH50...
  • Page 78: Figure 7-18. Vhf (136-162 Mhz) Synthesizer Schematic Diagram (8486769Z04-C)

    7-24 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) V_SF FN_V_SF 4.5V C231 C232 C233 1000pF 0.1uF 4.7uF R230 R247 110K 160K LOCK FN_LOCK LOCK: 3V UNLOCK: 0V WARP C204 INDMULT 470pF SFOUT ADAPTSW CCOMP LOCK C241 REFSEL IADAPT 1200pF V_STEER...
  • Page 79: Figure 7-19. Vhf (136-162 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486769Z04-C)

    VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-25 V_SF V_SF L270 4.5V VCO_VSF R273 560nH C292 1200pF C270 C274 C285 1200pF R270 VCO_3V 0.1uF 0.1uF C272 0.1uF L282 R284 L292 R272 47nH 68nH 9.1K C273 R271 .01uF 8.2K 1200 mV (RF) R274...
  • Page 80: Figure 7-20. Vhf (136-162 Mhz) Transmitter And Power Control Schematic Diagram (8486769Z04-C)

    7-26 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7.5 V USWB+ PA_USWB+ C170 0.1uF 0 V (Rx) 7.4 V (Rx) R171 0.15 V (Tx) TX_ENA Q171 MMBT3904 Q170 6.8K PA_TX_ENA EMB10 1.8V (Tx) R524 0 V (Rx) 7.25 V (Tx) C172 1500pF...
  • Page 81: Figure 7-21. Vhf (136-162 Mhz) Controller Interconnect Schematic Diagram (8486769Z04-C)

    VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-27 SW_B+ OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET DEMOD OPT_RX_AUD_SEND_DETECTOR DEMOD CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO BW_SEL BW_SEL OPT_RX_AUD_RETURN CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL CNTL_16_8_MHZ E500 BK1005HM471 C500 C501 1000pF D3_3V...
  • Page 82: Figure 7-22. Vhf (136-162 Mhz) Microprocessor Circuitry Schematic Diagram (8486769Z04-C)

    7-28 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) D3_3V R410 R416 R417 C418 0.1uF D3_3V D3_3V TP405 D3_3V R411 R406 Q425 R401 220K 300K D3_3V D3_3V D3_3V R419 4.7K C425 TP402 C419 Q426 D3_3V 1000pF Q410 100K R407 D3_3V R412...
  • Page 83: Figure 7-23. Vhf (136-162 Mhz) Audio Circuitry Schematic Diagram (8486769Z04-C)

    VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-29 150 mV RMS (25 kHz) (Rx) R523 75 mv RMS (12.5 kHz) (Rx R516 R522 100K C512 C514 6.8pF 16pF R512 R514 Q520-2 150K 100K IMX1 5V_A R511 100K Q520-1 DEMOD R513...
  • Page 84: Figure 7-24. Vhf (136-162 Mhz) Dc Regulation Schematic Diagram (8486769Z04-C)

    7-30 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) USWB+ U310 TK71750S 7.5 V VOUT CTRL F301 DATA BYPASS C301 J301 C313 C304 C311 C303 C310 C312 390pF D301 .01uF .01uF .018uF VR301 33uF .01uF 10uF MMBZ5250B D3_3V BATT_CHARGE 5 V (Rx) Q311...
  • Page 85: Figure 7-25. Vhf (136-162 Mhz) Board Component Side View (8486769Z04-C)

    VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-31 D301 R406 R405 R480 C488 C454 C465 C458 U425 Q425 D425 C480 Q426 R408 S444 R401 C513 E500 R403 J471 R473 R470 R409 U451 FL54 R496 L265 L255 C470 C257 C473 R481...
  • Page 86: Figure 7-26. Vhf (136-162 Mhz) Board Solder Side View (8486769Z04-C)

    7-32 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) C206 R206 C52 C53 L120 C417 R416 C220 C140 R411 U151 L130 L132 R434 R121 R502 C222 R433 C131 L140 FL51 R432 C135 R150 C221 R501 C223 C224 R120 C157 R151 D121...
  • Page 87 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-33 (8486769Z04-C) VHF (136-162 MHz) Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2113944A33 CAP, 47pF...
  • Page 88 7-34 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C410 2313960D07 CAP, 10uF C477 2113946K02 CAP, 100000pF D471...
  • Page 89 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-35 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. 0613952R13 RES, 33K R220 0613952Q53 RES, 150 R413 0613952R25...
  • Page 90 7-36 VHF 136-162 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Motorola Description Part No. 2515121H01 Balun Transformer 2515121H01 Balun Transformer 5115281H01 SA616 5115070H01 TC7W04FU U110 0178034A01 PA Module U150 5114005A01 LM2904DR U151 2415954H01 INDCTR Bead U201 5185177Y01 AT25016...
  • Page 91: Figure 7-27. Vhf (146-174 Mhz) Radio Circuit Block Interconnect Diagram (8486342Z09-A)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-21 Chapter 7 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) USWB+ USWB+ TX_ENA TX_ENA PWR_SET TX_VHF_R2 PWR_SET DEMOD DEMOD RX_BE RX_FE_VHF_R2 BW_SEL BW_SEL IF_IN IF_OUT RX_IN RX_OUT RSSI RSSI CONTROLLER...
  • Page 92: Figure 7-28. Vhf (146-174 Mhz) Receiver Front End Schematic Diagram (8486342Z09-A)

    7-22 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 5.0 V (RX) 0 V (TX) FE_5R 6.8K 3.95 V (RX) 1000pF UMT1 500 mV (RF) 3.95 V (RX) IF_OUT 560nH 3.38 V (RX) 100nH 1000pF 2.0 V (RX) 1000pF 0.1uF 6.8K...
  • Page 93: Figure 7-29. Vhf (146-174 Mhz) Receiver Back End Schematic Diagram (8486342Z09-A)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-23 0 V (25 kHz) 5 V (12.5 kHz) 5 V (25 kHz) 0 V (12.5 kHz) U52-1 TC7W04F FL53 CFWC455E 0.1uF OUT 2 2.8 V (25 kHz) 1 V (25 kHz) 0 V (12.5 kHz) 0 V (12.5 kHz) U52-3...
  • Page 94: Figure 7-30. Vhf (146-174 Mhz) Synthesizer Schematic Diagram (8486342Z09-A)

    7-24 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 4.5V V_SF C231 C232 C233 1000pF 0.1uF 4.7uF R230 R247 LOCK: 3V 200K 270K UNLOCK: 0V LOCK WARP C204 470pF INDMULT SFOUT ADAPTSW CCOMP LOCK C241 REFSEL IADAPT 3.0V to 9.0V 1200pF V_STEER IOUT...
  • Page 95: Figure 7-31. Vhf (146-174 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486342Z09-A)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-25 V_SF 4.5V V_SF L270 R273 560nH C292 1200pF C270 C274 C285 1200pF R270 0.1uF 0.1uF C272 0.1uF L282 R284 L292 47nH R272 68nH 9.1K C273 R271 8.2K .01uF R274 L271 1220 mV (RF) C271...
  • Page 96: Figure 7-32. Vhf (146-174 Mhz) Transmitter And Power Control Schematic Diagram (8486342Z09-A)

    7-26 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7.5 V USWB+ R170 100K 7.5 V (RX) 0 V (RX) 0 V (TX) 3.3 V (TX) Q170 TX_ENA TP0101T R171 0 V (RX) C170 Q171 1500pF 6.78 V (TX) DTC144EKA C157 0.1uF...
  • Page 97: Figure 7-33. Vhf (146-174 Mhz) Controller Interconnect Schematic Diagram (8486342Z09-A)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-27 SW_B+ OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND DEMOD OPT_RX_AUD_SEND_DETECTOR DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO BW_SEL BW_SEL OPT_RX_AUD_RETURN MOD_OUT MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL VS_RAC E500 BK1005HM471 C500 C501 1000pF SPI_CLK D3_3V SPI_DATA_OUT R502 SYNTH_CS...
  • Page 98: Figure 7-34. Vhf (146-174 Mhz) Microprocessor Circuitry Schematic Diagram (8486342Z09-A)

    7-28 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) D3_3V R410 R416 R417 C418 0.1uF TP405 R411 R419 4.7K TP402 C419 1000pF Q410 D3_3V D3_3V TP401 R412 LSIO C410 C411 C413 C412 100K 0.1uF 0.1uF 10uF 1000pF CH_ACT HOLD SQ_DET U402...
  • Page 99: Figure 7-35. Vhf (146-174 Mhz) Audio Circuitry Schematic Diagram (8486342Z09-A)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-29 150 mV RMS (25 kHz) (RX) 75 mV RMS (12.5 kHz) (RX) R516 C512 C514 6.8pF 16pF R512 R514 150K 100K 5V_A R511 100K R513 DEMOD R515 C518 0.1uF Q520 5V_A OPT_RX_AUD_SEND_DETECTOR...
  • Page 100: Figure 7-36. Vhf (146-174 Mhz) Dc Regulation Schematic Diagram (8486342Z09-A)

    7-30 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) USWB+ U310 TK71750S 7.5 V VOUT CTRL F301 DATA BYPASS J301 C301 C313 C304 C310 C311 C303 C312 390pF D301 .01uF VR301 .01uF .01uF .018uF 10uF 10uF MMBZ5250B D3_3V 5 V (RX) BATT_CHARGE 0 V (TX)
  • Page 101: Figure 7-37. Vhf (146-174 Mhz) Board Component Side View (8486342Z09-A)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-31 D301 R480 C465 C458 C454 S444 C513 J471 R473 R470 U451 FL54 C470 L265 L255 C473 R481 C267 C302 C257 R472 C482 C489 F301 R521 L264 L254 R471 C455 U480 C263 C253...
  • Page 102: Figure 7-38. Vhf (146-174 Mhz) Board Solder Side View (8486342Z09-A)

    7-32 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) C206 R206 C52 C53 C220 R416 C417 R411 C140 U151 L130 L132 R434 R502 C222 R433 C131 L140 FL51 R432 C135 R150 C221 R501 C223 R120 C224 C157 R151 D121 R154 R227...
  • Page 103 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-33 (8486342Z09-A) VHF (146-174 MHz) Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2109445U44 30 pF...
  • Page 104 7-34 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C430 2113743M24 0.1 uF C500 2113743L17 1000 pF 2413923C09...
  • Page 105 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z09-A) 7-35 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. 0662057M43 R272 0662057M97 9.1K R473 0662057M70 S442 4070354A01 pushbutton switch, side option 0662057M79 1.6K...
  • Page 106 20V, MMBZ5250B VR474 4813830A33 zener diode, 20V, MMBZ5250B VR475 4880140L20 zener diode, 15V, MMBZ5245B 4880606B09 crystal, 44.395 MHz 9186145B02 ceramic discriminator, 455 Y201* 4880114R06 crystal, 16.8 MHz Y202 not used * Motorola Depot Servicing only June, 2005 6880309N62-C...
  • Page 107: Parts Lists (8486342Z13-C)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-37 Chapter 7 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) USWB+ USWB+ TX_ENA TX_ENA PWR_SET TX_VHF_R2 PWR_SET DEMOD DEMOD RX_BE RX_FE_VHF_R2 BW_SEL BW_SEL IF_IN IF_OUT RX_IN RX_OUT RSSI RSSI CONTROLLER...
  • Page 108: Figure 7-40. Vhf (146-174 Mhz) Receiver Front End Schematic Diagram (8486342Z13-C)

    7-38 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 5.0V (Rx) 0V (Tx) FE_5R 6.8K 1000pF 3.95V (Rx) UMT1 500mV (RF) 3.95V (Rx) IF_OUT FE_IF_OUT 680nH 3.38V (Rx) 1000pF 100nH 2.0V (Rx) 1000pF 0.1uF 6.8K 3.9V (Rx) 150nH 82pF 700mV (RF) 68nH...
  • Page 109: Figure 7-41. Vhf (146-174 Mhz) Receiver Back End Schematic Diagram (8486342Z13-C)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-39 5 V (12.5 KHz) 0 V (12.5 KHz) 0 V (25KHz) 5V (25KHz) U52-1 TC7W04F FL53 CFWC455E 0.1uF OUT 2 0 V (12.5 KHz) 0 V (12.5 KHz) 2.8V (25KHz) 1V (25KHz) U52-3 TC7W04F...
  • Page 110: Figure 7-42. Vhf (146-174 Mhz) Synthesizer Schematic Diagram (8486342Z13-C)

    7-40 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) V_SF FN_V_SF 4.5V C231 C232 C233 1000pF 0.1uF 4.7uF R230 R247 200K 270K LOCK FN_LOCK LOCK: 3V UNLOCK: 0V WARP C204 INDMULT 470pF SFOUT ADAPTSW CCOMP LOCK C241 REFSEL IADAPT 1200pF V_STEER...
  • Page 111: Figure 7-43. Vhf (146-174 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486342Z13-C)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-41 V_SF V_SF L270 4.5V VCO_VSF R273 560nH C292 1200pF C270 C274 C285 1200pF R270 0.1uF 0.1uF VCO_3V C272 0.1uF L282 R284 L292 47nH R272 68nH 9.1K C273 R271 8.2K .01uF 1200 mV (RF) R274...
  • Page 112: Figure 7-44. Vhf (146-174 Mhz) Transmitter And Power Control Schematic Diagram (8486342Z13-C)

    7-42 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7.5 V 0.15 V (Tx) 7.5 V USWB+ PA_USWB+ C170 0.1uF 0 V (Rx) 7.4 V (Rx) R171 0.15 V (Tx) TX_ENA Q171 MMBT3904 Q170 PA_TX_ENA 6.8K EMB10 1.8V (Tx) R524 0 V (Rx) 7.25 V (Tx)
  • Page 113: Figure 7-45. Vhf (146-174 Mhz) Controller Interconnect Schematic Diagram (8486342Z13-C)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-43 SW_B+ OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET DEMOD OPT_RX_AUD_SEND_DETECTOR DEMOD CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO BW_SEL BW_SEL OPT_RX_AUD_RETURN CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL CNTL_16_8_MHZ E500 BK1005HM471 C500 C501 1000pF D3_3V...
  • Page 114: Figure 7-46. Vhf (146-174 Mhz) Microprocessor Circuitry Schematic Diagram (8486342Z13-C)

    7-44 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) D3_3V R410 R416 R417 C418 0.1uF TP405 R411 D3_3V R419 4.7K TP402 C419 D3_3V 1000pF Q410 R412 C411 C413 C410 C412 100K 10uF 0.1uF 0.1uF TP401 1000pF LSIO HOLD CH_ACT U402 X25128-2.7...
  • Page 115: Figure 7-47. Vhf (146-174 Mhz) Audio Circuitry Schematic Diagram (8486342Z13-C)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-45 150 mV RMS (25 kHz) (Rx) R523 75 mv RMS (12.5 kHz) (Rx) R516 R522 100K C512 C514 6.8pF 16pF R512 R514 Q520-2 150K 100K IMX1 5V_A R511 100K Q520-1 DEMOD R513...
  • Page 116: Figure 7-48. Vhf (146-174 Mhz) Dc Regulation Schematic Diagram (8486342Z13-C)

    7-46 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) USWB+ U310 TK71750S 7.5 V VOUT CTRL F301 DATA BYPASS C301 J301 C313 C304 C311 C303 C310 C312 390pF D301 .01uF .01uF .018uF VR301 33uF .01uF 10uF MMBZ5250B D3_3V BATT_CHARGE 5 V (Rx) Q311...
  • Page 117: Figure 7-49. Vhf (146-174 Mhz) Board Component Side View (8486342Z13-C)

    VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-47 D301 C488 R480 C465 C458 C454 C513 S444 C480 J471 R470 R473 U451 FL54 R496 C470 L265 L255 C267 C257 D262 C473 R481 R472 C302 C489 C482 R522 F301 R471 C255 C455...
  • Page 118: Figure 7-50. Vhf (146-174 Mhz) Board Solder Side View (8486342Z13-C)

    7-48 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) R206 C52 C53 C140 C206 L120 R416 C220 C417 U151 L130 L132 R411 C222 R121 R434 R502 R433 L140 C221 C131 C135 FL51 R432 C223 R150 R501 C224 R120 C157 R151 SH200...
  • Page 119 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-49 (8486342Z13-C) VHF (146-174 MHz) Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2113743N42 CAP, 47pF...
  • Page 120 7-50 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C411 2113743M24 CAP, 0.1uF C480 2113743E20 CAP, 0.1uF E453...
  • Page 121 VHF (146-174 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486342Z13-C) 7-51 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. 0662057N23 RES, 100K R243 0662057M81 RES, 2K R431 Not_Placed...
  • Page 122 MM3Z4V3T1 VR301 4813830A33 MMBZ5250B VR302 4813830A33 MMBZ5250B VR471 4813830A18 MMBZ5235B VR472 4813830A09 MMBZ5226B VR473 4813830A33 MMBZ5250B VR474 4813830A33 MMBZ5250B VR475 4880140L20 MMBZ5245B 4802245J84 45J84 9186145B02 45B02 Y201* 4880114R06 14R06 Y202 Not_Placed 45J68 * Motorola Depot Servicing only June, 2005 6880309N62-C...
  • Page 123: Chapter 7 Vhf 146-174 Mhz Schematic Diagrams, Overlays, And Parts Lists (8486769Z04-C)

    VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-53 Chapter 7 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) USWB+ USWB+ TX_ENA TX_ENA PWR_SET TX_VHF_R2 PWR_SET DEMOD DEMOD RX_BE RX_FE_VHF_R2 BW_SEL BW_SEL IF_IN IF_OUT RX_IN RX_OUT RSSI RSSI CONTROLLER...
  • Page 124: Figure 7-53. Vhf (146-174 Mhz) Receiver Front End Schematic Diagram (8486769Z04-C)

    7-54 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 5.0V (Rx) 0V (Tx) FE_5R 6.8K 1000pF 3.95V (Rx) UMT1 500mV (RF) 3.95V (Rx) IF_OUT FE_IF_OUT 680nH 3.38V (Rx) 1000pF 100nH 2.0V (Rx) 1000pF 0.1uF 6.8K 3.9V (Rx) 150nH 82pF 700mV (RF) 68nH...
  • Page 125: Figure 7-54. Vhf (146-174 Mhz) Receiver Back End Schematic Diagram (8486769Z04-C)

    VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-55 5 V (12.5 KHz) 0 V (12.5 KHz) 0 V (25KHz) 5V (25KHz) U52-1 TC7W04F FL53 CFWC455E 0.1uF OUT 2 0 V (12.5 KHz) 0 V (12.5 KHz) 2.8V (25KHz) 1V (25KHz) U52-3 TC7W04F...
  • Page 126: Figure 7-55. Vhf (146-174 Mhz) Synthesizer Schematic Diagram (8486769Z04-C)

    7-56 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) V_SF FN_V_SF 4.5V C231 C232 C233 1000pF 0.1uF 4.7uF R230 R247 200K 270K LOCK FN_LOCK LOCK: 3V UNLOCK: 0V WARP C204 INDMULT 470pF SFOUT ADAPTSW CCOMP LOCK C241 REFSEL IADAPT 1200pF V_STEER...
  • Page 127: Figure 7-56. Vhf (146-174 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486769Z04-C)

    VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-57 V_SF V_SF L270 4.5V VCO_VSF R273 560nH C292 1200pF C270 C274 C285 1200pF R270 0.1uF 0.1uF VCO_3V C272 0.1uF L282 R284 L292 47nH R272 68nH 9.1K C273 R271 8.2K .01uF 1200 mV (RF) R274...
  • Page 128: Figure 7-57. Vhf (146-174 Mhz) Transmitter And Power Control Schematic Diagram (8486769Z04-C)

    7-58 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7.5 V USWB+ PA_USWB+ C170 0.1uF 0 V (Rx) 7.4 V (Rx) R171 0.15 V (Tx) TX_ENA Q171 Q170 MMBT3904 6.8K PA_TX_ENA EMB10 1.8V (Tx) R524 0 V (Rx) 7.25 V (Tx) C172 1500pF...
  • Page 129: Figure 7-58. Vhf (146-174 Mhz) Controller Interconnect Schematic Diagram (8486769Z04-C)

    VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-59 SW_B+ OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET DEMOD OPT_RX_AUD_SEND_DETECTOR DEMOD CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO BW_SEL BW_SEL OPT_RX_AUD_RETURN CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL CNTL_16_8_MHZ E500 BK1005HM471 C500 C501 1000pF D3_3V...
  • Page 130: Figure 7-59. Vhf (146-174 Mhz) Microprocessor Circuitry Schematic Diagram (8486769Z04-C)

    7-60 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) D3_3V R410 R416 R417 C418 0.1uF TP405 R411 D3_3V R419 4.7K TP402 C419 D3_3V 1000pF Q410 R412 C411 C413 C410 C412 100K 10uF 0.1uF 0.1uF TP401 1000pF LSIO HOLD CH_ACT U402 X25128-2.7...
  • Page 131: Figure 7-60. Vhf (146-174 Mhz) Audio Circuitry Schematic Diagram (8486769Z04-C)

    VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-61 150 mV RMS (25 kHz) (Rx) R523 75 mv RMS (12.5 kHz) (Rx) R516 R522 100K C512 C514 6.8pF 16pF R512 R514 Q520-2 150K 100K IMX1 5V_A R511 100K Q520-1 DEMOD R513...
  • Page 132: Figure 7-61. Vhf (146-174 Mhz) Dc Regulation Schematic Diagram (8486769Z04-C)

    7-62 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) USWB+ U310 TK71750S 7.5 V VOUT CTRL F301 DATA BYPASS C301 J301 C313 C304 C311 C303 C310 C312 390pF D301 .01uF .01uF .018uF VR301 33uF .01uF 10uF MMBZ5250B D3_3V BATT_CHARGE 5 V (Rx) Q311...
  • Page 133: Figure 7-62. Vhf (146-174 Mhz) Board Component Side View (8486769Z04-C)

    VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-63 D301 R406 R405 R480 C488 C454 C465 C458 U425 Q425 D425 C480 Q426 R408 S444 R401 C513 E500 R403 J471 R473 R470 U451 R409 FL54 R496 L265 L255 C470 C257 C473 R481...
  • Page 134: Figure 7-63. Vhf (146-174 Mhz) Board Solder Side View (8486769Z04-C)

    7-64 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) C206 R206 C52 C53 L120 C220 C417 R416 R411 C140 U151 L130 L132 R434 R121 R502 C222 R433 C131 L140 FL51 R432 C135 R150 C221 R501 C223 C224 R120 C157 R151 D121...
  • Page 135 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-65 (8486769Z04-C) VHF (146-174 MHz) Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2113944A33 CAP, 47pF...
  • Page 136 7-66 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C410 2313960D07 CAP, 10uF C477 2113946K02 CAP, 100000pF D471...
  • Page 137 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) 7-67 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. 0613952R13 RES, 33K R220 0613952Q53 RES, 150 R413 0613952R25...
  • Page 138 7-68 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) Circuit Motorola Description Part No. 2515121H01 Balun Transformer 2515121H01 Balun Transformer 5115281H01 SA616 5115070H01 TC7W04FU U110 0178034A01 PA Module U150 5114005A01 LM2904DR U151 2415954H01 INDCTR Bead U201 5185177Y01 AT25016...
  • Page 139: Parts Lists

    (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or micro- henries (µH). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multi- meter or equivalent. If the board has been removed from the chassis, the transmitter module mounting screws may be used for ground connection.
  • Page 140 VHF Schematic Diagrams, Overlays, and Parts Lists: Introduction Ref. No. Series Circuit Block 301-400 DC Regulation 401-450 Microprocessor 451-550 Audio 7. Circuit Block Interconnection Legend: Name Description USWB+ Unswitched Battery Voltage (always on) 5 volts (regulated) 5 volts in RX mode only 5 volts in TX mode only RESET Low-line reset signal from U320 to uP...
  • Page 141: Figure 7-1. Six-Layer Circuit Board: Copper Steps In Layer Sequence

    Speaker and Microphone Schematic MATES WITH J470 ON RADIO BOARD MATES WITH J491 ON RADIO BOARD Figure 7-2. Speaker and Microphone Schematic 7.2.1 Speaker and Microphone Parts List Reference Motorola Part Description Designator 5080258E16 Microphone, electret 5005679X04 Speaker assembly with connector 6880309N62-C...
  • Page 142 VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic This Page Intentionally Left Blank June, 2005 6880309N62-C...
  • Page 143: Chapter 8 403-440 Mhz Uhf Theory Of Operation

    Chapter 8 403-440 MHz UHF Theory Of Operation Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 12 of this manual. UHF Receiver The UHF receiver covers the range of 403-440 MHz and provides switchable IF bandwidth for use with 20/25/30 kHz or 12.5 kHz channel spacing systems.
  • Page 144: Receiver Back End

    403-440 MHz UHF Theory Of Operation: UHF Receiver The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 462 MHz, and insertion loss of 3.5 dB.
  • Page 145: Uhf Transmitter

    403-440 MHz UHF Theory Of Operation: UHF Transmitter UHF Transmitter The UHF transmitter covers the range of 403-440 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (4 watts) and low power (1 watt), or is factory preset to 2 watts.
  • Page 146: Antenna Matching Network

    403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 8.3.4 Antenna Matching Network The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency.
  • Page 147: Fractional-N Synthesizer

    403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high (3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. Buffer Voltage Q280...
  • Page 148: Voltage Controlled Oscillator (Vco)

    403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit. DATA (U401 Pin 100) DATA LOCK LOCK (U401 Pin 56)
  • Page 149: Figure 8-5. Uhf Vco Block Diagram

    403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO. AUX3 (U201 Pin 2) TRB_IN Pin 20 Pin 19 Pin 7 TX/RX/BS...
  • Page 150 403-440 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C...
  • Page 151: Chapter 9 438-470 Mhz Uhf Theory Of Operation

    Chapter 9 438-470 MHz UHF Theory Of Operation Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 12 of this manual. UHF Receiver The UHF receiver covers the range of 438-470 MHz and provides switchable IF bandwidth for use with 20/25/30 kHz or 12.5 kHz channel spacing systems.
  • Page 152: Receiver Back End

    438-470 MHz UHF Theory Of Operation: UHF Receiver The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 462 MHz, and insertion loss of 3 dB.
  • Page 153: Uhf Transmitter

    438-470 MHz UHF Theory Of Operation: UHF Transmitter UHF Transmitter The UHF transmitter covers the range of 438-470 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (4 watts) and low power (1 watt), or is factory preset to 2 watts.
  • Page 154: Antenna Matching Network

    438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 9.3.4 Antenna Matching Network The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency.
  • Page 155: Fractional-N Synthesizer

    438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high (3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. Buffer Voltage Q280...
  • Page 156: Voltage Controlled Oscillator (Vco)

    438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit. DATA (U401 Pin 100) DATA LOCK LOCK (U401 Pin 56)
  • Page 157: Figure 9-5. Uhf Vco Block Diagram

    438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO. AUX3 (U201 Pin 2) TRB_IN Pin 20 Pin 19 Pin 7 TX/RX/BS...
  • Page 158 438-470 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C...
  • Page 159: Chapter 10 465-495 Mhz Uhf Theory Of Operation

    Chapter 10 465-495 MHz UHF Theory Of Operation 10.1 Introduction This chapter provides a detailed theory of operation for the radio components. Schematic diagrams for the circuits described in the following paragraphs are located in Chapter 12 of this manual. 10.2 UHF Receiver The UHF receiver covers the range of 465-495 MHz and provides switchable IF bandwidth for use with 20/25/30 kHz or 12.5 kHz channel spacing systems.
  • Page 160: Receiver Back End

    10-2 465-495 MHz UHF Theory Of Operation: UHF Receiver The output of the RF amplifier is applied to the interstage filter, a fixed-tuned 4-pole Butterworth shunt-coupled resonator design having a 3 dB bandwidth of 68 MHz centered at 480 MHz, and insertion loss of 3.3 dB.
  • Page 161: Uhf Transmitter

    465-495 MHz UHF Theory Of Operation: UHF Transmitter 10-3 10.3 UHF Transmitter The UHF transmitter covers the range of 465-495 MHz. Depending on model, the output power of the transmitter is either switchable on a per-channel basis between high power (4 watts) and low power (1 watt), or is factory preset to 2 watts.
  • Page 162: Antenna Matching Network

    10-4 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 10.3.4 Antenna Matching Network The harmonic filter presents a 50Ω impedance to antenna jack J140. A matching network, made up of C140-C141 and L140, is used to match the antenna impedance to the harmonic filter. This optimizes the performance of the transmitter and receiver into the impedance presented by the antenna, significantly improving the antenna's efficiency.
  • Page 163: Fractional-N Synthesizer

    465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 10-5 SPI_CLK, and SYNTH_CS (chip select) lines (U409 pins 100, 1 and 47 respectively). A logic high (3 V) from U201 pin 4 indicates to the microprocessor that the synthesizer is locked. Buffer Voltage Q280...
  • Page 164: Voltage Controlled Oscillator (Vco)

    10-6 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry One of the auxiliary outputs of the synthesizer IC (AUX3, U201 pin 2) provides the TRB signal which determines the operating mode of the VCO, either receive or transmit. DATA (U401 Pin 100) DATA LOCK...
  • Page 165: Figure 10-5. Uhf Vco Block Diagram

    465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry 10-7 C267, and varactor D261. High-port audio modulation from the synthesizer IC is applied as VCO_MOD to varactor D262 which modulates the transmit VCO. AUX3 (U201 Pin 2) TRB_IN Pin 20 Pin 19 Pin 7 TX/RX/BS...
  • Page 166 10-8 465-495 MHz UHF Theory Of Operation: UHF Frequency Generation Circuitry Notes: June, 2005 6880309N62-C...
  • Page 167: Table 11-1. Troubleshooting Table For Receiver

    Chapter 11 UHF Troubleshooting Tables 11.1 Troubleshooting Table for Receiver Table 11-1. Troubleshooting Table for Receiver Symptom Possible Causes Procedure Corrective Action Radio Dead (no 1. Battery dead or defec- Substitute known good battery or Charge or replace battery. turn-on beep, no tive.
  • Page 168 11-2 UHF Troubleshooting Tables: Troubleshooting Table for Receiver Table 11-1. Troubleshooting Table for Receiver (Continued) Symptom Possible Causes Procedure Corrective Action No Audio 1. Synthesizer out of lock Verify U201-4 is at 3V dc. Troubleshoot synthesizer/VCO circuits. 2. Defective IFIC Verify audio is present at U51-8.
  • Page 169: Table 11-2. Troubleshooting Table For Synthesizer

    UHF Troubleshooting Tables: Troubleshooting Table for Synthesizer 11-3 11.2 Troubleshooting Table for Synthesizer Table 11-2. Troubleshooting Table for Synthesizer Symptom Possible Causes Procedure Corrective Action Synthesizer Out of 1. VCO fault Verify oscillator is working, check RF Check VCO tank components Lock (RX mode level at U251-10 per schematic.
  • Page 170: Table 11-3. Troubleshooting Table For Transmitter

    11-4 UHF Troubleshooting Tables: Troubleshooting Table for Transmitter 11.3 Troubleshooting Table for Transmitter Table 11-3. Troubleshooting Table for Transmitter Symptom Possible Causes Procedure Corrective Action No Transmit (no TX 1. PTT switch defective. Verify U401-71 goes low when PTT Replace PTT switch S441. LED indication) is pressed.
  • Page 171 UHF Troubleshooting Tables: Troubleshooting Table for Transmitter 11-5 Table 11-3. Troubleshooting Table for Transmitter (Continued) Symptom Possible Causes Procedure Corrective Action Poor TX range, 1. RF test jack defective Verify continuity of J140 pins 3 and 4 Replace J140. conducted power in RX mode only.
  • Page 172: Table 11-4. Troubleshooting Table For Board And Ic Signals

    11-6 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11.4 Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals IC Designator Pin Function DC Voltage Comments (Condition) RF input 44.85 MHz 1.20 IFIC RF input decoupling...
  • Page 173 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-7 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U110 RF input (TX mode) RF Power Amp Vgg (gate bias) 2.65 (typ) (TX mode) (4.25V typ at VHF) 6.59...
  • Page 174 11-8 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U201 Ref osc XTAL2 Freq Synthesizer Ref osc warp output 3.00 Superfilter cap 4.48 Superfilter base (NU)
  • Page 175 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-9 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U251 Prescaler output 2.26 VCO / Buffer TX switch output (NU) 0.06 Vcc_BUFFERS 3.00...
  • Page 176 11-10 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U401 PB1_ADDR9 3.05 Microprocessor PB2_ADDR10 0.16 3.23 PBO_ADDR8 3.05 PB5_ADDR13 0.13 PG1_XA14 0.20 PG4_XA17...
  • Page 177 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-11 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U401 PH1_PW2 3.00 Microprocessor PH0_PW1 3.23 Synth chip select XIRQ 3.00 1.48 RX enable 0.01...
  • Page 178 11-12 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U401 PA3_IC4_OC5_OC1 3.00 Microprocessor PA4_OC4_OC1 Squelch detect input PA5_OC3_OC1 Channel activity input PA6_OC2_OC1 PA7_PA1_OC1 VSSR...
  • Page 179 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-13 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U404 3.17 Flash ROM 0.30 0.22 3.03 3.08 3.06 0.24 3.08 3.05 3.05 0.69...
  • Page 180 11-14 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U451 GCB1 general purpose output ASFIC_CMP GCB0 general purpose output 3.00 BW select (25 kHz mode) Squelch channel activity output To U401-84...
  • Page 181 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals 11-15 Table 11-4. Troubleshooting Table for Board and IC Signals (Continued) IC Designator Pin Function DC Voltage Comments (Condition) U480 Unit 1 output 2.48 Dual Opamp Unit 1 (-) input 2.48 Unit 1 (+) input 2.46...
  • Page 182 11-16 UHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals Notes: June, 2005 6880309N62-C...
  • Page 183 (pF) or microfarads (µF), and inductance values are in nanohenries (nH) or micro- henries (µH). 2. DC voltages are measured from point indicated to chassis ground using a Motorola DC multi- meter or equivalent. If the board has been removed from the chassis, the transmitter module mounting screws may be used for ground connection.
  • Page 184 12-2 UHF Schematic Diagrams, Overlays, and Parts Lists: Introduction Ref. No. Series Circuit Block 301-400 DC Regulation 401-450 Microprocessor 451-550 Audio 7. Circuit Block Interconnection Legend: Name Description USWB+ Unswitched Battery Voltage (always on) 5 volts (regulated) 5 volts in RX mode only 5 volts in TX mode only RESET Low-line reset signal from U320 to uP...
  • Page 185: Six Layer Circuit Board

    12.2 Speaker and Microphone Schematic MATES WITH J470 ON RADIO BOARD MATES WITH J491 ON RADIO BOARD Figure 12-2. Speaker and Microphone Schematic 12.2.1 Speaker and Microphone Parts List Reference Motorola Part Description Designator 5080258E16 Microphone, electret 5005679X04 Speaker assembly with connector...
  • Page 186 12-4 UHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic This Page Intentionally Left Blank June, 2005 6880309N62-C...
  • Page 187: Parts Lists (8486635Z03-O)

    UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-5 Chapter 12 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) UHF R1 USWB + USWB+ USWB+ USWB TX_EN A TX_ENA PWR_SET TX_UHF_R1 PWR_SET RX_BE RX_FE_UHF_R1 DEMOD DEMOD CONTROLLER BW_SEL BW_SEL...
  • Page 188: Figure 12-4. Uhf (403-440 Mhz) Receiver Front End Schematic Diagram (8486635Z03-O)

    12-6 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) FE_5R 5.6K 390pF UMT1 UHF R1 Front End SH40 SHIELD SHIELD 390pF 390pF 18nH 0.1uF 5.6K C523 0.55pF C521 4.2V 5.5% FE_IF_OUT 1.2K 390pF 3.3pF C522 IF_OUT 3.0% 680nH 1.8pF 1.8pF 18pF...
  • Page 189: Figure 12-5. Uhf (403-440 Mhz) Receiver Back End Schematic Diagram (8486635Z03-O)

    UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-7 RX Back End (Overtone) U52-1 FL53 TC7W04F CFWC455E 0.1uF OUT 2 U52-2 100K TC7W04F IF_BAND_SEL 5V for 25kHz BW_SE L 0V for 12.5kHz FL54 0.1uF CFWC455G 1 IN U52-3 47pF 3.3K SH50...
  • Page 190: Figure 12-6. Uhf (403-440 Mhz) Synthesizer Schematic Diagram (8486635Z03-O)

    12-8 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) UHF R1 Synthesizer FN_V_SF 4.5V V_SF SH200 SH201 C231 C232 C233 SHIELD SHIELD R230 R247 LOCK: 3V 0.1uF 1000pF 4.7uF UNLOCK: 0V FN_LOCK LOCK C204 31 NC3 WARP 470pF 29 NC2 INDMULT 17 NC1...
  • Page 191: Figure 12-7. Uhf (403-440 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486635Z03-O)

    UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-9 UHF R1 VCO V_SF VCO_VSF L270 R273 R277 4.5V V_SF 220nH C285 C270 C274 C292 VCO_3V 390pF 0.1uF 390pF 0.1uF L272 220nH SH250 SH251 SH253 C272 SHIELD SHIELD SHIELD L292 0.1uF L282...
  • Page 192: Figure 12-8. Uhf (403-440 Mhz) Transmitter And Power Control Schematic Diagram (8486635Z03-O)

    12-10 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) UHF R1 Tx PA_USWB+ USWB+ Q171 PA_TX_ENA TX_ENA C170 390pF Q170 EMB10 C525 390pF C172 R120 C157 C154 390pF 0.1uF 390pF R152 R121 100K R158 R159 C151 R153 U151 100K 390pF 5.1K...
  • Page 193: Figure 12-9. Uhf (403-440 Mhz) Controller Interconnect Schematic Diagram (8486635Z03-O)

    UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-11 Controller SW_B +3 V VS_AUDIO_SEL CNTL_PWR_SET OPT_MI C PWR_SET PWR_SET OPT_TX_AUD_FLAT_RETURN CNTL_DEMO D DEMO D DEMOD OPT_TX_AUD_RETURN CNTL_BW_SEL OPT_TX_AUD_SEN D BW_SEL BW_SEL AUDI O OPT_RX_AUD_SEND_DETECTO R OPT_RX_AUD_SEND_UNMUTED MOD_OUT MOD_OUT CNTL_16_8_MHZ OPT_RX_AUD_RETURN 16_8_MHZ...
  • Page 194: Figure 12-10. Uhf (403-440 Mhz) Microprocessor Circuitry Schematic Diagram (8486635Z03-O)

    12-12 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) Microprocessor D3_3 V D3_3V C418 R410 R416 R417 D3_3V 0.1uF Q410 C410 C411 C413 C412 TP402 R412 R411 0.1uF 1000pF 0.1uF 10uF 100K SC I TP405 SH401 SH400 C419 SHIELD SHIELD 1000pF...
  • Page 195: Figure 12-11. Uhf (403-440Mhz) Audio Circuitry Schematic Diagram (8486635Z03-O)

    UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-13 R516 R523 Audio C512 C514 R522 Q520 6.8pF 16pF IMX1 100K R512 150K R514 5V_A 100K U510-1 LM2904 Q520 IMX1 R511 C518 R513 DEMOD C460 100K R515 VR471 0.1uF OPT_RX_AUD_SEND_DETECTO R R470 5V_A...
  • Page 196: Figure 12-12. Uhf (403-440 Mhz) Dc Regulation Schematic Diagram (8486635Z03-O)

    12-14 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) DC Regulation USWB+ U310 TK71750S VR301 F301 J301 MMBZ5250B 1 VIN VOUT 4 CTRL D301 C301 C303 C304 BYPASS C311 C312 C313 DATA 47pF .01uF .018uF .01uF 33uF 10uF Q311 C310 .01uF...
  • Page 197: Figure 12-13. Uhf (403-440 Mhz) Board Component Side View (8486635Z03-O)

    UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-15 D301 C488 C465 R480 C458 C454 C513 S444 C480 J471 R470 R473 R264 U451 R254 FL54 R496 L265 L255 C470 R253 C267 C473 R481 R472 C256 C257 C302 C489 C482 R522 C455...
  • Page 198: Figure 12-14. Uhf (403-440 Mhz) Board Solder Side View (8486635Z03-O)

    12-16 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) R206 C206 C52 C53 C220 C417 R416 R411 D121 U151 C222 R434 L140 R502 R433 R432 C221 FL51 C122 R150 R501 C223 C157 L132 L141 C224 C132 C159 R151 SH200 R154 C158...
  • Page 199 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-17 (8486635Z03-O) UHF (403-440 MHz) Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2113743N46 CAP, 68pF...
  • Page 200 12-18 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C406 2113743N50 CAP, 150pF C475 2113743L48 CAP, .022uF D262...
  • Page 201 UHF (403-440 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486635Z03-O) 12-19 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. 0662057M43 RES, 51 R206 Not_Placed RES, 100 R421 0662057V27...
  • Page 202 MM3Z3V9T1 VR301 4813830A33 MMBZ5250B VR302 4813830A33 MMBZ5250B VR471 4813830A18 MMBZ5235B VR472 4813830A09 MMBZ5226B VR473 4813830A33 MMBZ5250B VR474 4813830A33 MMBZ5250B VR475 4880140L20 MMBZ5245B 4802245J84 TSS2_44_395MHZ 9186145B02 45B02 Y201* 4880114R06 14R06 Y202 Not_Placed 45J68 * Motorola Depot Servicing only June, 2005 68810309N62-C...
  • Page 203: Chapter 12 Uhf (438-470 Mhz) Schematic Diagrams, Overlays, And Parts Lists (8486348Z09-A)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-21 Chapter 12 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) USWB+ USWB+ TX_ENA TX_ENA PWR_SET TX_UHF_R2 PWR_SET DEMOD DEMOD RX_BE RX_FE_UHF_R2 BW_SEL BW_SEL IF_IN IF_OUT RX_IN RX_OUT RSSI RSSI CONTROLLER...
  • Page 204: Figure 12-16. Uhf (438-470 Mhz) Receiver Front End Schematic Diagram (8486348Z09-A)

    12-22 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 5 V (RX) 0 V (TX) FE_5R 5.6K 4.2 V (RX) 390pF UMT1 3.66 V (RX) 4.2 V (RX) 390pF 390pF 18nH 1.93 V (RX) 0.1uF +7.5 dBm C523 363 mV (RF) 0.2pF 5.6K...
  • Page 205: Figure 12-17. Uhf (438-470 Mhz) Receiver Back End Schematic Diagram (8486348Z09-A)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-23 0 V (25 kHz) 5 V (12.5 kHz) 5 V (25 kHz) 0 V (12.5 kHz) U52-1 TC7W04F FL53 CFWC455E 0.1uF 1 IN 2.8 V (25 kHz) 1 V (25 kHz) 0 V (12.5 kHz) 0 V (12.5 kHz) U52-3...
  • Page 206: Figure 12-18. Uhf (438-470 Mhz) Synthesizer Schematic Diagram (8486348Z09-A)

    12-24 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 4.5V V_SF R230 R247 C231 C232 C233 100K 1000pF 0.1uF 4.7uF LOCK: 3V UNLOCK: 0V LOCK WARP C204 470pF INDMULT SFOUT ADAPTSW R245 CCOMP LOCK 3.5V to 10V 1.5K C241 REFSEL IADAPT...
  • Page 207: Figure 12-19. Uhf (438-470 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486348Z09-A)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-25 V_SF R273 4.5V R277 V_SF L270 220nH C292 390pF C270 C274 C285 390pF 0.1uF 0.1uF L272 220nH C272 0.1uF L282 R284 L292 15nH 15nH C273 R271 R272 5.1K 5.6K .01uF C290 +11.7 dBm...
  • Page 208: Figure 12-20. Uhf (438-470 Mhz) Transmitter And Power Control Schematic Diagram (8486348Z09-A)

    12-26 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 7.5V USWB+ R170 100K 7.5 V (RX) 0 V (RX) 0 V (TX) 3.3 V (TX) TX_ENA Q170 R171 0 V (RX) C170 6.8 V (TX) 390pF Q171 C157 0.1uF C154 390pF...
  • Page 209: Figure 12-21. Uhf (438-470 Mhz) Controller Interconnect Schematic Diagram (8486348Z09-A)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-27 SW_B+ OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND OPT_RX_AUD_SEND_DETECTOR DEMOD DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO BW_SEL BW_SEL OPT_RX_AUD_RETURN MOD_OUT MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL VS_RAC E500 BK1005HM471 C500 C501 1000pF SPI_CLK D3_3V SPI_DATA_OUT R502 SYNTH_CS...
  • Page 210: Figure 12-22. Uhf (438-470 Mhz) Microprocessor Circuitry Schematic Diagram (8486348Z09-A)

    12-28 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) D3_3V R410 R416 R417 C418 0.1uF TP405 R411 R419 4.7K TP402 C419 1000pF Q410 D3_3V D3_3V TP401 R412 C411 LSIO C410 C413 C412 100K 10uF 0.1uF 0.1uF 1000pF CH_ACT SQ_DET HOLD U402...
  • Page 211: Figure 12-23. Uhf (438-470 Mhz) Audio Circuitry Schematic Diagram (8486348Z09-A)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-29 150 mV RMS (25 kHz) (RX) 75 mV RMS (12.5 kHz) (RX) R516 C512 C514 6.8pF 16pF R512 R514 150K 100K 5V_A R511 100K R513 DEMOD R515 C518 Q520 100k 0.1uF 5V_A...
  • Page 212: Figure 12-24. Uhf (438-470 Mhz) Dc Regulation Schematic Diagram (8486348Z09-A)

    12-30 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) USWB+ U310 TK71750S 7.5 V VOUT CTRL F301 DATA BYPASS J301 C301 C313 C304 C310 C311 D301 C303 C312 390pF .01uF .018uF VR301 10uF .01uF .01uF 10uF MMBZ5250B D3_3V 5 V (RX) BATT_CHARGE 0 V (TX)
  • Page 213: Figure 12-25. Uhf (438-470 Mhz) Board Component Side View (8486348Z09-A)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-31 D301 R480 C465 C458 C454 S444 C513 J471 R473 R470 R264 U451 R254 FL54 L265 L255 R253 C267 C256 C473 C470 R481 C257 C302 R472 C489 C482 C455 L264 R521 R171 L254...
  • Page 214: Figure 12-26. Uhf (438-470 Mhz) Board Solder Side View (8486348Z09-A)

    12-32 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) C121 C124 D121 R206 C52 C53 C136 C206 C220 C417 R416 R411 U151 L121 R434 C122 C123 R502 C134 C222 R433 R432 L140 FL51 C135 C223 R150 C221 R501 C157 L132 L141...
  • Page 215 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-33 (8486348Z09-A) UHF (438-470 MHz) Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2113743M24 0.1 uF...
  • Page 216 12-34 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C416 2113743L17 1000 pF C493 2113743L17 1000 pF FL54...
  • Page 217 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z09-A) 12-35 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. 0662057M64 R253 0662057M38 R443 0662057A27 R518 0662057N31 220K 0662057M80 1.8K...
  • Page 218 20V, MMBZ5250B VR474 4813830A33 zener diode, 20V, MMBZ5250B VR475 4880140L20 zener diode, 15V, MMBZ5245B 4880606B09 crystal, 44.395 MHz 9186145B02 ceramic discriminator, 455 Y201* 4880114R06 crystal, 16.8 MHz Y202 not used * Motorola Depot Servicing only June, 2005 6880309N62-C...
  • Page 219: Chapter 12 Uhf (438-470 Mhz) Schematic Diagrams, Overlays, And Parts Lists (8486348Z13-C)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-37 Chapter 12 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) USWB+ USWB+ TX_ENA TX_ENA PWR_SET TX_UHF_R2 PWR_SET DEMOD DEMOD RX_BE RX_FE_UHF_R2 BW_SEL BW_SEL IF_IN IF_OUT RX_IN RX_OUT RSSI RSSI CONTROLLER...
  • Page 220: Figure 12-28. Uhf (438-470 Mhz) Receiver Front End Schematic Diagram (8486348Z13-C)

    12-38 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 5 V (Rx) 0 V (Tx) FE_5R 5.6K 390pF 4.2 V (Rx) UMT1 3.66 V (Rx) 4.2 V (Rx) 390pF 390pF 22nH 4.2 V (Rx) 0.1uF C523 363 mV (RF) 0.45pF 5.6K C521...
  • Page 221: Figure 12-29. Uhf (438-470 Mhz) Receiver Back End Schematic Diagram (8486348Z13-C)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-39 0 V for 25 kHz 5 V (25 kHz) 5 V for 12.5 kHz 0 V (12.5 kHz) U52-1 TC7W04F FL53 CFWC455E 0.1uF 1 IN 2.8 V (25 kHz) 1 V (25 kHz) 0 V (12.5 kHz) 0 V (12.5 kHz)
  • Page 222: Figure 12-30. Uhf (438-470 Mhz) Synthesizer Schematic Diagram (8486348Z13-C)

    12-40 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) V_SF FN_V_SF 4.5 V R230 R247 C231 C232 C233 1000pF 0.1uF 4.7uF LOCK FN_LOCK LOCK: 3 V UNLOCK: 0 V WARP C204 INDMULT 470pF SFOUT ADAPTSW R245 CCOMP LOCK 1.5K C241 REFSEL...
  • Page 223: Figure 12-31. Uhf (438-470 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486348Z13-C)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-41 V_SF V_SF L270 R277 VCO_VSF R273 220nH 4.5 V C292 390pF C270 C274 C285 390pF 0.1uF 0.1uF L272 VCO_3V 220nH C272 0.1uF L282 R284 L292 15nH 15nH +11.7 dBm C273 R271 R272...
  • Page 224: Figure 12-32. Uhf (438-470 Mhz) Transmitter And Power Control Schematic Diagram (8486348Z13-C)

    12-42 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 7.5 V USWB+ 0 V (Rx) PA_USWB+ C170 3.3 V (Tx) 390pF TX_ENA 7.5 V (Rx) PA_TX_ENA 0 V (Tx) Q170 EMB10 Q171 0 V (Rx) 6.8 V (Tx) C171 390pF C157...
  • Page 225: Figure 12-33. Uhf (438-470 Mhz) Controller Interconnect Schematic Diagram (8486348Z13-C)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-43 SW_B+ OPT_MIC OPT_TX_AUD_FLAT_RETURN OPT_TX_AUD_RETURN PWR_SET PWR_SET OPT_TX_AUD_SEND CNTL_PWR_SET DEMOD OPT_RX_AUD_SEND_DETECTOR DEMOD CNTL_DEMOD OPT_RX_AUD_SEND_UNMUTED AUDIO BW_SEL BW_SEL OPT_RX_AUD_RETURN CNTL_BW_SEL MOD_OUT MOD_OUT CNTL_MOD_OUT VS_AUDIO_SEL 16_8_MHZ 16_8_MHZ VS_GAIN_SEL CNTL_16_8_MHZ E500 BK1005HM471 C500 C501 1000pF D3_3V...
  • Page 226: Figure 12-34. Uhf (438-470 Mhz) Microprocessor Circuitry Schematic Diagram (8486348Z13-C)

    12-44 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) D3_3V R410 R416 R417 C418 0.1uF TP405 R411 D3_3V R419 4.7K TP402 C419 D3_3V 1000pF Q410 R412 C410 C411 C413 C412 100K 0.1uF 0.1uF 10uF TP401 1000pF LSIO HOLD CH_ACT U402 X25128-2.7...
  • Page 227: Figure 12-35. Uhf (438-470 Mhz) Audio Circuitry Schematic Diagram (8486348Z13-C)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-45 150 mV RMS (25 KHz) (Rx) R523 75 mV RMS (25 KHz) (Rx) R516 R522 100K C512 C514 6.8pF 16pF R512 R514 Q520-2 150K 100K IMX1 5V_A R511 100K Q520-1 DEMOD R513...
  • Page 228: Figure 12-36. Uhf (438-470 Mhz) Dc Regulation Schematic Diagram (8486348Z13-C)

    12-46 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) USWB+ U310 TK71750S 7.5 V VOUT CTRL F301 DATA BYPASS C301 J301 C313 C303 C304 C310 C311 C312 390pF D301 .01uF VR301 .01uF .01uF .018uF 33uF 10uF MMBZ5250B D3_3V 5 V (Rx) BATT_CHARGE 0 V (Tx)
  • Page 229: Figure 12-37. Uhf (438-470 Mhz) Board Component Side View (8486348Z13-C)

    UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-47 D301 C488 C465 R480 C458 C454 C513 S444 C480 J471 R473 R470 R264 U451 R254 FL54 R496 L265 L255 C470 R253 C473 C267 R481 R472 C256 C257 C302 C489 C482 R522 L264...
  • Page 230: Figure 12-38. Uhf (438-470 Mhz) Board Solder Side View (8486348Z13-C)

    12-48 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) C121 C124 R206 C52 C53 C206 D121 C417 R416 C220 R411 C136 U151 L121 C222 C134 C123 R434 L140 R502 R433 C122 R432 C221 C135 FL51 C223 R150 R501 L132 L141 C131...
  • Page 231 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-49 (8486348Z13-C) UHF (438-470 MHz) Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2113743N46 CAP, 68pF...
  • Page 232 12-50 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C400 Not_Placed CAP, .022uF C467 2113743L19 CAP, 1200pF D201...
  • Page 233 UHF (438-470 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486348Z13-C) 12-51 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q481 Not_Placed MMBT3906 R150 0680539Z01 RES, 0.1 R400 Not_Placed...
  • Page 234 Y201* 4880114R06 crystal, 16.8 MHz, 14R06 2580541Z02 transformer, balun Y202 Not_Placed 45J68 5186144B01 receiver system (IFIC), SA616 * Motorola Depot Servicing only 5109522E10 triple inverter, TC7W04F U110 0186438Z02 transmitter PA module, RA07M4452M_UHF U150 5113818A01 dual op amp, LM2904 U151...
  • Page 235: Chapter 12 Uhf (465-495 Mhz) Schematic Diagrams, Overlays, And Parts Lists (8486634Z02-O)

    UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-53 Chapter 12 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF R3 USWB + USWB + USWB+ USWB TX_ENA TX_ENA PWR_SET TX_UHF_R3 PWR_SET DEMOD DEMOD RX_FE_UHF_R3 RX_BE CONTROLLER BW_SEL BW_SEL...
  • Page 236: Figure 12-40. Uhf (465-495 Mhz) Receiver Front End Schematic Diagram (8486634Z02-O)

    12-54 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF R3 Front End FE_5R 5.6K 390pF SH40 SHIELD SHIELD UMT1 390pF 390pF 22nH 0.1uF 5.6K C521 4.2V C523 3.7% 1.2K 390pF 2.7pF C522 0.5pF IF 1 0.5pF 0.79V RX_IN 1.1% 1.25%...
  • Page 237: Figure 12-41. Uhf (465-495 Mhz) Receiver Back End Schematic Diagram (8486634Z02-O)

    UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-55 RX Back End (Overtone) U52-1 FL53 TC7W04F CFWC455E 0.1uF OUT 2 U52-2 100K TC7W04F IF_BAND_SEL 5V for 25kHz BW_SE L 0V for 12.5kHz FL54 0.1uF CFWC455G 1 IN U52-3 47pF 3.3K SH50...
  • Page 238: Figure 12-42. Uhf (465-495 Mhz) Synthesizer Schematic Diagram (8486634Z02-O)

    12-56 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF R3 Synthesizer FN_V_SF 4.5V V_SF C231 C232 C233 R230 R247 0.1uF 1000pF 4.7uF SH201 SH200 SHIELD SHIELD FN_LOCK LOCK LOCK: 3V C204 31 NC3 UNLOCK: 0V WARP 470pF 29 NC2 INDMULT 17 NC1...
  • Page 239: Figure 12-43. Uhf (465-495 Mhz) Voltage Controlled Oscillator Schematic Diagram (8486634Z02-O)

    UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-57 UHF R3 VCO V_SF VCO_VSF L270 R273 R277 4.5V V_S F 220nH C274 C292 C270 VCO_3V 390pF 0.1uF 390pF C285 L272 C272 0.1uF 220nH SH250 SH251 SH253 0.1uF SHIELD SHIELD SHIELD L282...
  • Page 240: Figure 12-44. Uhf (465-495 Mhz) Transmitter And Power Control Schematic Diagram (8486634Z02-O)

    12-58 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) UHF R3 Tx PA_USWB+ USWB+ PA_TX_EN A TX_ENA C170 390pF Q171 Q170 EMB10 SH100 SHIELD C525 C172 390pF R120 C157 C154 390pF 0.1uF 390pF R152 100K 1% R121 C160 R158 C151 R153...
  • Page 241: Figure 12-45. Uhf (465-495 Mhz) Controller Interconnect Schematic Diagram (8486634Z02-O)

    UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-59 Controller SW_B +3 V VS_AUDIO_SEL CNTL_PWR_SET OPT_MI C PWR_SET PWR_SET OPT_TX_AUD_FLAT_RETURN CNTL_DEMO D DEMO D DEMOD OPT_TX_AUD_RETURN CNTL_BW_SEL OPT_TX_AUD_SEN D BW_SEL BW_SEL AUDI O OPT_RX_AUD_SEND_DETECTO R OPT_RX_AUD_SEND_UNMUTED MOD_OUT MOD_OUT CNTL_16_8_MHZ OPT_RX_AUD_RETURN 16_8_MHZ...
  • Page 242: Figure 12-46. Uhf (465-495 Mhz) Microprocessor Circuitry Schematic Diagram (8486634Z02-O)

    12-60 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) Microprocessor D3_3 V D3_3V C418 R410 R416 R417 D3_3V 0.1uF Q410 C410 C411 C413 C412 TP402 R412 R411 0.1uF 1000pF 0.1uF 10uF 100K SC I TP405 SH401 SH400 C419 SHIELD SHIELD 1000pF...
  • Page 243: Figure 12-47. Uhf (465-495 Mhz) Audio Circuitry Schematic Diagram (8486634Z02-O)

    UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-61 R516 R523 Audio C512 C514 R522 Q520 6.8pF 16pF IMX1 100K R512 150K R514 5V_A 100K U510-1 LM2904 Q520 IMX1 R511 C518 R513 DEMOD C460 R515 VR471 100K 0.1uF R470 OPT_RX_AUD_SEND_DETECTO R 5V_A...
  • Page 244: Figure 12-48. Uhf (465-495 Mhz) Dc Regulation Schematic Diagram (8486634Z02-O)

    12-62 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) DC Regulation USWB+ U310 TK71750S F301 VR301 J301 MMBZ5250B 1 VIN VOUT 4 CTRL D301 C301 C303 C304 BYPASS C311 C312 C313 DATA 47pF .01uF .018uF .01uF 33uF 10uF Q311 C310 .01uF...
  • Page 245: Figure 12-49. Uhf (465-495 Mhz) Board Component Side View (8486634Z02-O)

    UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-63 D301 C488 C465 R480 C458 C454 C513 S444 C480 J471 R470 R473 R264 U451 R254 FL54 R496 L265 L255 C470 R253 C267 C473 R481 R472 C256 C257 C302 C489 C482 R522 L264...
  • Page 246: Figure 12-50. Uhf (465-495 Mhz) Board Solder Side View (8486634Z02-O)

    12-64 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) C121 C124 C206 R206 C52 C53 C417 R416 C220 D121 C136 U151 R411 L121 C222 C134 R434 C123 R502 R433 R432 C122 C135 C141 C221 FL51 R150 R501 C223 C157 L132 L141...
  • Page 247 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-65 (8486634Z02-O) UHF (465-495 MHz) Radio Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Circuit Motorola Part No. Part No. Part No. Description Part No. 2113743N46 CAP, 68pF...
  • Page 248 12-66 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C401 2113743M24 CAP, 0.1uF C470 2113743E20 CAP, 0.1uF D201...
  • Page 249 UHF (465-495 MHz) Schematic Diagrams, Overlays, and Parts Lists (8486634Z02-O) 12-67 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. 0662057M92 RES, 5.6K R158 0662057M78 RES, 1.5K R417 0662057M98...
  • Page 250 MM3Z3V9T1 VR301 4813830A33 MMBZ5250B VR302 4813830A33 MMBZ5250B VR471 4813830A18 MMBZ5235B VR472 4813830A09 MMBZ5226B VR473 4813830A33 MMBZ5250B VR474 4813830A33 MMBZ5250B VR475 4880140L20 MMBZ5245B 4802245J84 TSS2_44_395MHZ 9186145B02 45B02 Y201* 4880114R06 14R06 Y202 Not_Placed 45J68 * Motorola Depot Servicing only June, 2005 6880309N62-C...
  • Page 252 MOTOROLA, The Stylized M logo, and Radius are trademarks of Motorola, Inc. All other product or service names are the property of their respective owners. © 2005 Motorola, Inc. All rights reserved. Printed in U.S.A. *6880309N62* 6880309N62-C...

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