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Motorola MCX600E Service Manual

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MCX600E
Mobile Radio
Service Manual
Issue: December 1999

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Summary of Contents for Motorola MCX600E

  • Page 1 MCX600E Mobile Radio Service Manual Issue: December 1999...

  • Page 2: Computer Software Copyrights

    Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola prod-...

  • Page 3: Safety Information

    Read this information before using your radio. SAFE AND EFFICIENT OPERATION OF MOTOROLA TWO-WAY RADIOS This document provides information and instructions for the safe and efficient operation of Motorola Portable and Mobile Two-Way Radios. The information provided in this document supersedes the general safety information contained in user guides published prior to 1 January 1998.
  • Page 4 Safety Information CONTROL STATION OPERATION When radio equipment is used to operate as a control station, it is important that the antenna be installed outside the building and away from places where people may be in close proximity. NOTE Refer to Table 1 for rated power and minimum distance values for transmitting antennas. ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY NOTE Nearly every electronic device is susceptible to electromagnetic interference (EMI) if inade-...
  • Page 5 Cautions and Warnings CAUTION ELECTROSTATIC SENSITIVE DEVICES PRECAUTIONS SHOULD BE TAKEN TO MINIMIZE THE RISK OF DAMAGE BY ELECTROSTATIC DISCHARGE TO ELECTROSTATIC SENSITIVE DEVICES (ESDs). ANY DEVICES EMPLOYING METAL OXIDE SILICON (MOS) TECHNOLOGY ARE PARTICULARLY SUSCEPTIBLE. CIRCUIT DIAGRAMS MARKED WITH THE ABOVE SYMBOL INDICATE ELECTRONIC CIRCUITS (PECs) FOR WHICH ESD HANDLING PRECAUTIONS ARE NECESSARY.
  • Page 6 Cautions and Warnings...
  • Page 7 Cautions and Warnings WARNING SAFETY WARNINGS THE ELECTRICAL POWER USED IN THIS EQUIPMENT IS AT A VOLTAGE HIGH ENOUGH TO ENDANGER LIFE. BEFORE CARRYING OUT MAINTENANCE OR REPAIR, PERSONS CONCERNED MUST ENSURE THAT THIS EQUIPMENT IS ISOLATED FROM THE ELECTRICAL SUPPLY AND TESTS ARE MADE TO ENSURE THAT ISOLATION IS COMPLETE.
  • Page 8 Cautions and Warnings...

  • Page 9: Introduction

    Contents Service Manual Contents Chapter Introduction Gives a brief introduction into the manual and the service policy. Model Chart and Accessories Provides list of models and accessories available for the mobile radio. Maintenance Describes how to disassemble/assemble the radio for maintenance purposes and gives details on safety precautions.
  • Page 10 Contents viii Service Manual...

  • Page 11: Table Of Contents

    Table of Contents Chapter 1 Introduction Table of Contents Paragraph Page Introduction ....................1 Scope of Manual ..................1 How to Use This Manual ................1 Warranty and Service Support ..............1 Warranty Period................... 1 After Warranty Period .................. 1 Piece Parts ....................
  • Page 12 Table of Contents 1-ii Introduction...

  • Page 13: Scope Of Manual

    In instances where the product is covered under a "return for replacement" or "return for repair" warranty, a check of the product should be performed prior to shipping the unit back to Motorola. To ensure the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty.

  • Page 14: Piece Parts

    Aftermarket Division (AAD). If no part number is assigned, the part is not normally available from Motorola. If the part number is appended with an asterisk, the part is serviceable by Motorola Depot only. If a parts list is not included, this generally means that no user-serviceable parts are available for that kit or assembly.

  • Page 15: Specifications

    Specifications Specifications General Transmitter Frequency Range 336-390MHz Power Output 5 - 25W (no degradation) ... Channel Spacing 25kHz Maximum Deviation 25kHz ± 5kHz Modulation Type 8K5G3,14G3,16G3 Audio Distortion (@1kHz, 60% deviation) Antenna Impedance 50 Ohms Spurious and Harmonics - 36dBm Mode of Operation Trunked/Conventional Switching Bandwidth...
  • Page 16 Specifications Introduction...
  • Page 17 Table of Contents Chapter 2 Model Chart and Accessories Table of Contents Paragraph Page Overview ..................... 1 Model Chart ....................1 Accessories ....................2 Mechanical Hardware Kits ................2 Speakers...................... 2 Cables......................2 Other......................2 Model Chart and Accessories...
  • Page 18 Table of Contents 2-ii Model Chart and Accessories...

  • Page 19: Model Chart

    Overview Overview This chapter lists the models and accessories available for the MCX600E mobile radio. Model Chart MCX600E 336-390 MHz X = Indicates one of each required Item Description GBN6147 Packaging Kit GLN7331 Blank Control Head GLN7317 MPT Trunnion Kit...
  • Page 20 Accessories Accessories Mechanical Hardware Kits GLN7317_ Standard Trunnion kit GLN7324_ Low Profile Trunnion kit GLN7331_ Blank Control Head Speakers All speaker connecting cables have 16-pin accessory connector plug. GSN6059_ 13W External Speaker, square Cables GKN6270_ Battery power cable 3m, 10A fuse (Standard) GKN6271_ Ignition switch cable Other...
  • Page 21 Table of Contents Chapter 3 Maintenance Table of Contents Paragraph Page Overview ..................... 1 Disassemble the Radio ................1 Remove the Control Head ................1 Remove the Top Cover................2 Remove the Transceiver Board ..............2 Assemble Radio ..................3 Replace the Transceiver Board ..............
  • Page 22 Table of Contents 3-ii Maintenance...

  • Page 23: Disassemble The Radio

    Overview Overview This chapter explains, step by step, how to disassemble and assemble the radio, to transceiver board level. The chapter also contains a list of test equipment required to service the radio and the procedure for radio alignment/test setup is also available in this chapter. Note: Control head type may differ from the diagram shown in this section, depending on the models supported.

  • Page 24: Remove The Top Cover

    Disassemble the Radio Remove the Top Cover Recess Figure 3-2 Top Cover Removal. Insert a small flat blade screw driver in the side recess of the radio chassis. Lift the top cover over the chassis. Remove the Transceiver Board Protruding Tabs Clip Flex Recess...

  • Page 25: Assemble Radio

    Assemble Radio Carefully remove the transceiver board by rotating it out of the chassis: Slowly lift the board on the front edge, the side with the connector that mates with the control head, and pull gently toward the front of the radio. CAUTION: The thermal grease can act as an adhesive and cause the leads of the heat dissipating devises to be over stressed if the board is lifted too quickly.

  • Page 26: Exploded View Diagrams And Parts

    Exploded View Diagrams and Parts Exploded View Diagrams and Parts Cover Chassis 1502609Y01 incl. Gasket Chassis 3202619Y01 Shield 2602640Y01 Screw M3x10 03S10911A12 Controlhead with Shield or without LCD Main 2602639Y01 Accessory Conn. 16Pin 2804503J01 Power Conn. 0905902V01 Gasket 3205930V01 Flex 8402618Y01 Clip 4205938V01 7502618Y01...

  • Page 27: Service Aids

    Cable (9 pin) to the RIB. 3080369B71 Computer Interface Connects the computer’s serial communications adapter Cable (25 pin) to the RIB. PMVN4022D PTX600/MCX600E DPS Dealer Software, 3.5” floppy disks DPS_Dealer PMVN4023D PTX600/MCX600E DPS Network Software, 3.5” floppy disks DPS_Network Maintenance...

  • Page 28: Test Equipment

    The “Characteristics” column is included so that equivalent equipment may be substituted; however, when no information is provided in this column, the specific Motorola model listed is either a unique item or no substitution is recommended. Table 3-2 Recommended Test Equipment.

  • Page 29: Radio Tuning Procedure

    Radio Tuning Procedure Radio Tuning Procedure General The recommended hardware platform is a 386 or 486 DX 33 PC (personal computer) with 8 Mbytes RAM, MS DOS 5.0, Windows 3.1, and DPS (Dealer Programming Software). These are required to align the radio. Refer to your DPS Installation Manual for installation and setup procedures for the required software;...

  • Page 30: Pa Bias Voltage

    Radio Tuning Procedure The Service windows introduce the concept of the “Softpot”, an analog SOFTware controlled POTentiometer used for adjusting all transceiver alignment controls. A softpot can be selected by clicking with the mouse at the value or the slider or by hitting the TAB key until the value or the slider is highlighted.

  • Page 31: Transmitter Power

    Radio Tuning Procedure Transmitter Power The radio has two power level settings, a high power level setting, and a low power level setting. IMPORTANT : To set the transmitter power for customer applications use the Common Radio Parameters window under the Edit menu and set the “Low Power Level” and “High Power Level” powers to the desired values.

  • Page 32: Reference Oscillator

    Radio Tuning Procedure Reference Oscillator Adjustment of the reference oscillator is critical for proper radio operation. Improper adjustment will not only result in poor operation, but also a misaligned radio that will interfere with other users operating on adjacent channels. For this reason, the reference oscillator should be checked every time the radio is serviced.

  • Page 33: Speakers

    Radio Tuning Procedure Table 3-5 Normal Test Deviation. Channel Spacing Deviation 12.5 kHz 1.5 kHz 20 kHz 2.4 kHz 25 kHz 3 kHz Table 3-6 Start Value for Front-End Pre-selector Tuning. RF-Band Target Stepsize Start Value 0.5% Maximum 0.42% Minimum 336-390MHz 0.84 Maximum...

  • Page 34: Transmit Voltage Limit

    Radio Tuning Procedure When no chatter is detected, select the next softpot and repeat steps 4 - 7 for all test frequencies shown in the window. Click the Program button to store the softpot values. Transmit Voltage Limit The transmit control voltage limit softpot sets the maximum power control voltage. All 7 voltage limit softpots are tuned and programmed automatically when the Program button is clicked.

  • Page 35: Transmit Deviation Limit

    Radio Tuning Procedure 7.11 Transmit Deviation Limit The transmit deviation limit softpot sets the maximum deviation of the carrier. The deviation value needs to be set at 7 frequencies across the frequency range. From the Service menu, select Transmitter Alignment. Select Reference Attenuation to open the reference attenuation tuning window.
  • Page 36 Radio Tuning Procedure Set the RF test generator to the receive test frequency, and set the RF level to the value indicated for RSSI Level 0, modulated with a 1 kHz tone at the normal test deviation shown in table 3-5. Set test box (GTF180) audio switch to the “SPKR” position. The 1 kHz tone must be audible to make sure the radio is receiving.
  • Page 37 Table of Contents Chapter 4 Theory of Operation Table of Contents Overview ..................... 1 Open Controller ..................1 General ......................1 Voltage Regulators ..................1 Electronic On/Off ..................2 Emergency....................2 Mechanical On/Off ..................3 Ignition ......................3 Hook RSS ....................3 Microprocessor Clock Synthesizer ..............
  • Page 38 Table of Contents PTT Sensing and TX Audio Processing ............ 11 Transmit Signalling Circuits ..............11 Sub-audible Data (PL/DPL) ............... 12 High Speed Data ..................12 Dual Tone Multiple Frequency (DTMF) Data..........12 Receive Audio Circuits ................13 Squelch Detect ..................13 Audio Processing and Digital Volume Control ...........

  • Page 39: Cables

    It consists of a microprocessor, support memory, support logic, signal MUX ICs, the On/Off circuit, and general purpose Input/Output circuitry. The controller uses the Motorola 68HC11K1 microprocessor (U0101). In addition to the microprocessor, the controller has 3 external memory devices. The 3 memory devices consist of a 32 kByte SRAM (U0103), a 256kByte FLASH EEPROM (U0102), and an optional EEPROM (U0104 or U0107) upto 16kByte.

  • Page 40: Electronic On/Off

    Open Controller Regulator U0601 is used to generate the 9.3 volts required by some audio circuits, the RF circuitry and power control circuitry. Input and output capacitors (C0601-C0603 and C0604/C0605) are used to reduce high frequency noise. R0602/R0603 set the output voltage of the regulator. If the voltage at pin 1 is greater than 1.3 volts the regulator output decreases and if the voltage is less than 1.3 volts the regulator output increases.

  • Page 41: Mechanical On/Off

    Open Controller While EMERGENCY CONTROL is low, SW B+ is on, the microprocessor starts execution, reads that the emergency input is active through the voltage level of EMER IGN SENSE, and sets the B+ CONTROL output of the ASFIC pin B4 to a logic high. This high will keep Q0611 switched on through Q0612.

  • Page 42: Microprocessor Clock Synthesizer

    Open Controller Microprocessor Clock Synthesizer The clock source for the microprocessor system is generated by the ASFIC (U0201). Upon power- up the synthesizer U5701 (UHF) / U3701 (VHF) / U8701 (300MHz-R1) generates a 2.1 MHz waveform that is routed from the RF section (via C0202) to the ASFIC (on U0201-E1) For the main board controller the ASFIC uses 2.1MHz as a reference input clock signal for its internal synthesizer.

  • Page 43: Other

    Open Controller 2.10 SPEB Serial Interface The SBEP serial interface allows the radio to communicate with the Dealer Programming Software (DPS) via the Radio Interface Box (RIB). This interface connects to the accessory connector J0400- 6 and comprises BUS+ (J0101-15). The line is bi-directional, meaning that either the radio or the DPS can drive the line.
  • Page 44 Open Controller The external SRAM (U0103) as well as the µP’s own internal RAM space are used for temporary calculations required by the software during execution. All of the data stored in both of these locations is lost when the radio powers off (See the particular device subsection for more details). The FLASH EEPROM contains the actual Radio Operating Software.

  • Page 45: Flash Electronically Erasable Programmable Memory

    Open Controller Capacitors C0104, C0105, C0113, C0114 serve to filter out any AC noise which may ride on +5V at U0101. Input IRQ (U101-61) generates an interrupt, if either HOOK RSS (J0101-3) is higher than 6V (SBEP communication) and turns Q0106 on via Q0105, Q0104, or a low at the option interrupt pin (J0103- 8) turns Q0124 off and Q0125 on.

  • Page 46: Static Random Access Memory (Sram)

    Open Controller 2.15 Static Random Access Memory (SRAM) The SRAM (U0103) contains temporary radio calculations or parameters that can change very frequently, and which are generated and stored by the software during its normal operation. The information is lost when the radio is turned off. The device allows an unlimited number of write cycles.

  • Page 47: Transmit Audio Circuits

    General CONTROLLER BOARD AUDIO AND SIGNALLING CIRCUITS General Audio Signalling Filter IC (ASFIC) The ASFIC (U0201) used in the controller has 4 functions; RX/TX audio shaping, i.e. filtering, amplification, attenuation RX/TX signalling, PL/DPL/HST/MDC/MPT Squelch detection Microprocessor clock signal generation (see Microprocessor Clock Synthesizer Description Block).

  • Page 48: External Mic Path

    Transmit Audio Circuits From here the signal is routed to R0206. R0204 and R0205 provide the 9.3VDC bias and R0206 provides input protection for the CMOS amplifier input. R0205 and C0209 provide a 1kohm AC path to ground that sets the input impedance for the microphone and determines the gain based on the emitter resistor in the microphone’s amplifier circuit.

  • Page 49: Ptt Sensing And Tx Audio Processing

    Transmit Signalling Circuits PTT Sensing and TX Audio Processing Mic PTT coming from the Control Head via connector J101-4 is sensed by the µP U0101 pin 22. An external PTT can be generated by grounding pin 3 on the accessory connector. When microphone PTT or external PTT is sensed, the µP will always configure the ASFIC for the internal mic audio path.

  • Page 50: High Speed Data

    Transmit Signalling Circuits Sub-audible Data (PL/DPL) Sub-audible data implies signalling whose bandwidth is below 300Hz. PL and DPL waveforms are used for conventional operation and connect tones for trunked voice channel operation. The trunking connect tone is simply a PL tone at a higher deviation level than PL in a conventional system. Although it is referred to as ”sub-audible data,”...

  • Page 51: Receive Audio Circuits

    Receive Audio Circuits Receive Audio Circuits Refer to Figure 4.3 for reference for the following sections. ACCESSORY CONNECTOR FLT RX AUDIO J0400 AUDIO SPKR + EXTERNAL SPKR - U0401 SPEAKER SPKR+ SPKR- CONTROL HEAD CONNECTOR ATTEN. INTERNAL SPEAKER J0101 HANDSET AUDIO UNIV IO RX AUD OUT...

  • Page 52: Audio Processing And Digital Volume Control

    Receive Audio Circuits CH ACT is routed to the µP pin 25 while SQ DET adds up with LOCK DET, weighted by resistors R0113, R0114, and is routed to one of the µP´s ADC inputs U0101-43. From the voltage weighted by the resistors the µP determines whether SQ DET, LOCK DET or both are active.

  • Page 53: Filtered Audio

    Receive Signalling Circuits The audio PA is enabled via AUDIO PA ENABLE signal from the ASFIC (U0201-B5). When the base of Q0401 is low, the transistor is off and U0401-8 is high, using pull up resistor R0406, and the Audio PA is ON.

  • Page 54: Alert Tone Circuits

    Receive Signalling Circuits Sub-audible Data (PL/DPL) and High Speed Data Decoder The ASFIC (U0201) is used to filter and limit all received data. The data enters the ASFIC at U0201- J7. Inside U0201 the data is filtered according to data type (HS or LS), then it is limited to a 0-5V digital level.

  • Page 55: Mhz Specific Circuit Description

    Receiver Front-End 300MHz SPECIFIC CIRCUIT DESCRIPTION Receiver Front-End The receiver is able to cover the range from 336 to 390 MHz. It consists of four major blocks: front- end, mixer, first IF section and IF IC. Antenna signal pre-selection is performed by two varactor tuned bandpass filters.

  • Page 56: Power Controlled Stage

    Transmitter Power Amplifier (PA) 5-25W IF IC (U5201) The first IF signal from the crystal filters feeds the IF IC (U5201) at pin 6. Within the IF IC the 45.1MHz first IF signal mixes with the second local oscillator (LO) at 44.645MHz to the second IF at 455 kHz.

  • Page 57: Directional Coupler

    Transmitter Power Amplifier (PA) 5-25W PA Stages The bipolar transistor Q8520 is driven by Q8510. To reduce the collector-emitter voltage and in turn the power dissipation of Q8510 its collector current is drawn from the antenna switch circuit. In transmit mode the base of Q8520 is slightly positive biased by a divided K9V1 signal. This bias along with the rf signal from Q8510 allows a collector current to be drawn from the antenna switch circuit and in turn switches the antenna switch to transmit, while in receive mode the low K9V1 signal with no rf signal present cuts off the collector current and in turn switches the antenna switch...

  • Page 58: Harmonic Filter

    Transmitter Power Amplifier (PA) 5-25W A high impedance resonant circuit formed by D8551 in off state and L8554, C8559 prevents an influence of the receive signal by the PA stages. The high impedance of D8631 in off state doesn´t influence the receiver signal. Harmonic Filter The transmitter signal from the antenna switch is channelled through the harmonic filter to the antenna connector J8501.The harmonic filter is formed by inductors L8552, L8553, and capacitors...

  • Page 59: Frequency Synthesis

    Frequency Synthesis Loop frequency response is controlled by opamp feedback components R0712 and C0711. Opamp U0701-3 compares the power control voltage PWR CNTL divided by resistors R0717 to R0719 with the voltage limit setting VLTG LIMIT SET from the D/A converter (U0731-13) and keeps the control voltage constant via Q0711 if the control voltage, reduced by the resistive divider (R0717 to R0719), approaches the voltage of VLTG LIMIT SET (U0731-13).

  • Page 60: Voltage Controlled Oscillator (Vco)

    Frequency Synthesis In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin VCP (U8701-32), a voltage of 13 VDC is being generated by the positive voltage multiplier circuitry (D8701-1-3, C8716, C8717). This voltage multiplier is basically a diode capacitor network driven by two (1.05MHz) 180 degrees out of phase signals (U8701-9 and -10).
  • Page 61 Frequency Synthesis The output signal of the phase detector is a pulsed DC signal which is routed to the charge pump. The charge pump outputs a current at pin 29 (I OUT of U8701). The loop filter (which consists of R8715-R8717, C8723-C8725, C8727) transforms this current into a voltage that is applied to the varactor diodes D8802, D8803 and alters the output frequency of the VCO.
  • Page 62 Frequency Synthesis 4-24 Theory of Operation...
  • Page 63 Table of Contents Chapter 5 PCB/Schematic Diagrams and Parts Lists Table of Contents Description Page 336-390MHz Diagrams and Parts Lists 336-390MHz Main Board Component Side ..............1 PCB No. 8486049B01 ....................1 336-390MHz Main Board Solder Side ................2 PCB No. 8486049B01 ....................2 336-390MHz Open Controller Schematic Diagram ............3 Controller Parts List .......................4 336-390MHz Open Controller_IO Schematic Diagram..........5...
  • Page 64 Table of Contents 5-ii PCB/Schematic Diagrams and Parts Lists...

  • Page 65: Mhz Main Board Component Side

    336-390MHz Main Board Component Side C5229 Q0141 Q0123 Q0121 J0101 C5238 E8702 R8703 R0126 R0130 C8726 R8724 R5222 C8892 C0121 U0105 R8723 R8726 R0128 VR0102 R0204 R0205 C0243 C0223 C8728 C0222 C0228 C5226 Y8702 R0206 U8891 C8724 R5221 R0129 FL5202 R0135 R0122 R0201...
  • Page 66 336-390MHz Main Board Solder Side R0220 VR8701 C8718 E8701 R5225 R5216 C5237 C5233 C8729 C0209 C0224 VR0161 U8701 C0210 U5201 C5239 C8720 R8717 C0136 C5236 C8717 D0200 C5215 C8715 C0227 C5225 D8701 C8716 R0200 C0200 R8700 L0200 Q0104 Q0106 C8719 Q0105 C5221 C5223...
  • Page 67 336-390MHz Open Controller Schematic Diagram 336-390MHz Open Controller Schematic Diagram 1 of 2 Diagrams and Parts Lists...

  • Page 68: Controller Parts List

    336-390MHz Open Controller Schematic Diagram Controller Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description Part No. C0209 2311049J26 TANT CP 10uF 20% 16V C0410 2113741F17 470pF 50V Q0104...
  • Page 69 336-390MHz Open Controller_IO Schematic Diagram 336-390MHz Open Controller_IO Schematic Diagram 2 of 2 Diagrams and Parts Lists...
  • Page 70 336-390MHz Open Controller_IO Schematic Diagram Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R0119 0662057A73 10k 1/16W 5% R0210 0662057A49 1k 1/16W 5% R0433 0662057A65 4k7 1/16W 5%...
  • Page 71 336-390MHz Supply Voltage Schematic Diagram USW_+5V D0621 FLT_A+_8 R0621 USW_+5V_CL FLT_A+ 2.2K C0621 VR0621 C0622 470pF 470pF 47uF 47uF 5.1V U0601 R0606 LM2941T 9V3_1_8 9V3_8 VOUT D0631 R0631 U0631 ON_OFF* R0601 R0602 LP2951CM LP2951CM 7.5K C0601 C0602 C0603 INPUT OUTPUT C0604 C0605 470pF...

  • Page 72: Supply Voltage Parts List

    336-390MHz Supply Voltage Schematic Diagram Supply Voltage Parts List Circuit Motorola Description Part No. Circuit Motorola Description R0613 0662057C87 RES CHIP 3300 5 1/8 Part No. R0614 0662057A49 RES CHP 1k 1/16W 5% C0601 2113741F17 470pF 50V R0615 0662057A73 RES CHP 10k 1/16W 5%...
  • Page 73 336-390MHz Power Control Schematic Diagram VAG_7 (CNTL) C0711 R0705 R0702 R0712 C0705 39000pF .0047uF U0701-2 PWR_DETECT_7 R0701 U0701-4 MC3403 (PA) PWR_DETECT R0704 MC3403 PWR_CNTL_7 PWR_CNTL (PA) R0711 C0701 C0702 100pF 100pF C0713 100pF C0712 R0716 R0717 R0703 43pF 560K U0701-3 MC3403 R0714 C0716...

  • Page 74: Power Control Parts List

    336-390MHz Power Control Schematic Diagram Power Control Parts List Circuit Motorola Description Part No. Circuit Motorola Description R0711 0662057A81 22k 1/16W 5% Part No. R0712 0662057B47 C0701 2113740F51 100pF 5% 50V R0713 0662057A61 3k3 1/16W 5% C0702 2113740F51 100pF 5% 50V...
  • Page 75 336-390MHz Power Amplifier 5-25W Schematic Diagram L8600 FLT_A+_1 L8601 FLT_A+ J8601 C8603 C8600 C8601 C8604 C8602 D8601 .001uF 330pF 10uF 10uF 100pF BIAS_VLTG_2 BIAS_VLTG_2_1 BIAS_VLTG_1 C8528 C8531 BIAS_VLTG .001uF TP8201 C8622 K9V1_1 R8623 R8624 .01uF K9V1 L8532 C8548 .01uF C8621 Q8611 .01uF .001uF...
  • Page 76 336-390MHz Power Amplifier 5-25W Schematic Diagram Power Amplifier 5-25W Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description Part No. C8552 2111078B16 HQ 13pF 5% L8531 2460591C23 SQUARE COIL 16nH 3T...

  • Page 77: Mhz Synthesizer Schematic Diagram

    336-390MHz Synthesizer Schematic Diagram TP8701 VR8701 R8700 5V_STAB C8703 C8700 0.1uF 0.1uF D8701-1 D8701-2 D8701-3 R8711 LOCK_DET_4 LOCK_DET C8721 C8720 C8719 .01uF .01uF 10uF FRACN_CE_4 FRACN_CE C8716 C8717 0.1uF 0.1uF MOD_IN_4 MOD_IN C8715 2_1MHZ_4 R8701 R8702 2_1MHZ C8713 33pF .001uF C8702 C8701 100pF...

  • Page 78: Synthesizer Parts List

    336-390MHz Synthesizer Schematic Diagram Synthesizer Parts List Circuit Motorola Description Part No. Circuit Motorola Description R8711 0662057A15 39 1/16W 5% Part No. R8712 0662057A59 2k7 1/16W 5% C8700 2113743K15 100nF 16V R8713 0662057A59 2k7 1/16W 5% (12.5kHz) C8701 2113740F51 100pF 5% 50V...
  • Page 79 336-390MHz Voltage Controlled Oscillator Schematic Diagram R8857 Q8801 1.5K FLT_9V3 R8856 R8863 9V3_1_4 9V3_4 L8852 R8862 22nH C8870 C8869 0.1uF 0.1uF R8852 L8851 R8855 C8858 R8858 C8862 C8863 C8802 2DTC143ZK 22nH 1.5pF 30pF 27pF R8803 43pF C8867 C8864 15pF C8868 L8801 R8864 EXCITER_PA_4...
  • Page 80 336-390MHz Voltage Controlled Oscillator Schematic Diagram Voltage Controlled Oscillator Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Parts List Part No. Part No. Part No. C8862 2113740F07 1.5pF 5% 50V Q8802 4813823A05 TSTR N-CH RF JFET R8855 0662057A35 270 1/16W 5%...

  • Page 81: Mhz Rx-Fe Schematic Diagram

    336-390MHz RX-FE Schematic Diagram R8302 9V3_2 TP8301 C8331 C8310 C8311 C8307 R8311 L8401 RX_IF_2 330pF 330pF .0033uF .0033uF TP8302 4.7K 9V3_2_3 RX_IF 470nH D8311 R8315 R8401 1.5K Q8302 R8317 K9V1_2 L8302 K9V1 470nH R8318 L8402 C8404 R8312 150nH 82pF C8306 4.7K .0033uF .0033uF...

  • Page 82: Rx-Fe Parts List

    336-390MHz RX-FE Schematic Diagram RX-FE Parts List Circuit Motorola Circuit Motorola Description Description Part No. Part No. Circuit Motorola Description C8407 2113740F63 330pF 5% R8318 0662057A35 270 1/16W 5% Part No. D8301 4862824C01 DIODE VARACTOR R8319 0662057A23 82 1/16W 5%...

  • Page 83: Mhz Rx-If Schematic Diagram

    336-390MHz RX-IF Schematic Diagram FL5204 CASE 5V_FLT 5V_STAB R5206 FL5203 L5206 33000nH R5217 C5215 C5216 CASE .220uF .220uF R5204 C5204 FL5201 FL5202 .100uF FILTER FILTER_6POLE R5205 INSTPAR INSTPAR FILTER R5202 5V_FLT C5224 C5223 .0015uF .1uF C5231 D5201 C5205 C5203 R5203 18pF MIXER_IN DEMOD...

  • Page 84: Rx-If Parts List

    336-390MHz RX-IF Schematic Diagram RX-IF Parts List Circuit Motorola Description Part No. Circuit Motorola Description C5239 2113740F44 51pF 5% 50V Part No. D5201 4880154K03 Dual Schottky SOT23 C5200 2113740F35 22pF 5% 50V FL5201 9180098D06 Filter CER 4-EL 455kHz C5201 2113740F19 4.7pF 5% 50V...
  • Page 85 Table of Contents Appendix A PL Codes Table of Contents Paragraph Page PL Codes ........... . 1 PL (CTCSS) Codes...
  • Page 86 Table of Contents A-ii PL (CTCSS) Codes...
  • Page 87 PL Codes PL Codes The following PL Codes have been tested and are acceptable for programming into any transmit or receive frequency. GROUP A GROUP B GROUP C Code Freq Code Freq Code Freq 67.0 71.9 69.3 77.0 82.5 74.4 88.5 94.8 79.7...
  • Page 88 PL Codes PL (CTCSS) Codes...
  • Page 89 Table of Contents Appendix B Hand Held Control Head PMMN4005 Table of Contents Appendix Introduction/Theory of Operation PCB/Schematic Diagram and Parts List Hand Held Control Head PMMN4005...
  • Page 90 Table of Contents B-ii Hand Held Control Head PMMN4005...
  • Page 91 Table of Contents Appendix B.1 Introduction/Theory of Operation Table of Contents Paragraph Page Overview ..................... 1 Theory of Operation .................. 1 General ......................1 Power Supplies.................... 1 Power On / Off ..................... 2 PTT Button....................2 ON/OFF Hook Control ................. 2 Keypad and Top Keys .................
  • Page 92 Table of Contents B.1-ii Introduction/Theory of Operation...

  • Page 93: Overview

    Overview Overview Hand Held Control Head PMMN4005 TOP KEYS EMERGENCY ON/OFF CLEAR INDICATOR LED FRONT MIC PORT Theory of Operation General The Hand Held Control Head contains the microphone, 3 top buttons and 1 side button (PTT button) and 22 keypad buttons to operate the radio, several indicator Light Emitting Diodes (LED) and 7 icons of LCD Display to inform the user about the radio status and 10 character (5x7dot matrix) Liquid Crystal Display (LCD) for radio information e.g.

  • Page 94: Power On / Off

    Theory of Operation Power On / Off The On/Off button when pressed switches the radio’s voltage regulators on by pulling ON OFF CONTROL to high via D0971 and connects the base of Q0971 to FLT A+. This transistor pulls the line ANALOG 3 to low to inform the µP that the On/Off button is pressed.

  • Page 95: Keypad And Top Keys

    Theory of Operation Keypad and Top Keys The HHCH keypad has 22 keys, plus 3 additional top keys, the on/off key being one of them, which are located on the top of the HHCH. All keys of the keypad are configured as 2 analogue lines (ANALOG_1 & ANALOG_2) to the radio. The microprocessor in the mobile radio will compare the voltage when any one of the keypad row or keypad column keys is being pressed.

  • Page 96: Liquid Crystal Display (Lcd)

    Theory of Operation Liquid Crystal Display (LCD) The LCD display is a 10 character 5 X 7 dot matrix display which incorporates 7 icons. Data is loaded serially into the display driver U0951 via the SPI interface. The display data of line SPI DATA BUF is shifted by clock signal LCD CLCK BUF.

  • Page 97: Electrostatic Transient Protection

    Theory of Operation Radio Adapter Cable HHCH Description J0101 J0950 P0951 Connector J0901 INT SPKR+ (NU) INT SPKR- (NU) ANALOG 3 ANALOG 1 ANALOG 2 FLT A+ ON OFF CONTROL LCD CLCK BUF SPI DATA BUF LED CLCK BUF HOOK LED CE 2.11 Electrostatic Transient Protection...
  • Page 98 Theory of Operation B.1-6 Introduction/Theory of Operation...
  • Page 99 Table of Contents Appendix B.2 PCB/Schematic Diagram and Parts List Table of Contents Description Page HHCH PMMN4005 - Diagrams and Parts Lists PCB Layout Component Side ..........1 PCB Layout Solder Side .
  • Page 100 Table of Contents B.2-ii PCB/Schematic Diagram and Parts List...
  • Page 101 Hand Held Control Head PMMN4005 D0973 D0975 S0903 S0904 S0902 R0998 R1002 Q0984 R0983 R1001 R0985 R0984 U0951 R0977 U1001 D1001 R0978 R0981 C0983 C0984 C1002 C0923 VR0922 TP0902 TP0901 R0952 R0959 Q0981 R0950 R0995 R0957 R0958 D0992 D0991 C0921 Q0902 C0907 R0904...
  • Page 102 Hand Held Control Head PMMN4005 B.2-2 Diagrams and Parts List...
  • Page 103 Hand Held Control Head Schematic Diagram R0931 S0913 S0914 S0915 R0901 R0904 R0911 SWITCH SWITCH SWITCH 1.2K 2.2K J0901-12 OUT1 OUT1 OUT11 R0909 J0903-1 MIC+ Q0902 4 IN 4 IN VR0901 C0902 C0903 Q0901 R0932 C0901 C0904 C0908 150K C0907 0.1uF "BELL"...
  • Page 104 Hand Held Control Head Parts List Hand Held Control Head Circuit Motorola Circuit Motorola Circuit Motorola Descritpion Descritpion Descritpion Parts List Part No. Part No. Part No. C0984 2113743A19 100nF 16V R0911 0662057A57 2k2 1/16W 5% R0990- 0662057A33 220 1/16W 5%...
  • Page 105 © 1999 by Motorola, Inc. Motorola Technology Sdn. Bhd. (Co. No. 455657-H) Bayan Lepas FIZ Phase III 11900 Penang, Malaysia Printed in Malaysia December, 1999 6804111J89-O...

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