Motorola GP2000 Service Manual
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Motorola GP2000 Service Manual

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GP2000
Portable Radios
Service Manual
6804112J41-O
June, 2001

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Summary of Contents for Motorola GP2000

  • Page 1 GP2000 Portable Radios Service Manual 6804112J41-O June, 2001...

  • 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

    RF energy. RADIO OPERATION AND EME EXPOSURE Your Motorola radio is designed to comply with the following national and international standards and guidelines regarding exposure of human beings to radio frequency electromagnetic energy (EME): ¥...

  • Page 4: Antenna Care

    DO NOT hold the antenna when the radio is ÒIN USEÓ. Holding the antenna affects call quality and may cause the radio to operate at a higher power level than needed. Approved Accessories For a list of approved Motorola accessories look in the appendix or accessory section of your radioÕs User Guide. ELECTROMAGNETIC INTERFERENCE/COMPATIBILITY...

  • Page 5: Safety And General

    SAFETY INFORMATION SAFETY AND GENERAL Use While Driving Check the laws and regulations on the use of radios in the area where you drive. Always obey them. When using your radio while driving, please: ¥ Give full attention to driving and to the road. ¥...
  • Page 6 SAFETY INFORMATION...

  • Page 7: Table Of Contents

    Table of Contents Section 1 INTRODUCTION 1.0 Scope of Manual....................1-1 2.0 Warranty and Service Support................1-1 2.1 Warranty Period and Return Instructions ............1-1 2.2 After Warranty Period..................1-1 2.3 Piece Parts ..................... 1-2 2.4 Technical Support ..................1-2 3.0 Radio Model Information..................
  • Page 8 viii 3.2 Cloning Radio Parameters to User Radios.............4-2 3.3 Parameters which are cloned .................4-2 3.4 Parameters which are not cloned ..............4-2 3.5 To Clone a Radio....................4-2 3.6 Error Conditions....................4-3 3.7 Dealer and User Configurations ..............4-3 4.0 Programming Mode....................4-4 4.1 Introduction .....................4-4 4.2 Entering Programming Mode................4-4 4.3 Exiting Programming Mode ................4-4 4.4 Accessing Programming Mode Parameters ...........4-4...
  • Page 9 4.0 Block Diagrams....................7-9 4.1 Complete ......................7-9 4.2 Controller...................... 7-10 4.3 VCO......................7-10 4.4 Transmitter ....................7-11 4.5 Receiver ....................... 7-11 5.0 Circuit Board/Schematic Diagrams and Parts List..........7-13 Controller Board ....................7-13 VHF 136-174 MHz Main Board Top Side............. 7-14 VHF 136-174 MHz Main Board Bottom Side............

  • Page 11: 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. This is to ensure that the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty.

  • Page 12: 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 13: Radio Model Information

    Channel Feature Protocol Series Band Level Packages Spacing Level Unit (136-174 Limited 12.5K Conventional GP2100 MHz) Keypad with Display (216-257 Full Keypad 20/25K GP2000 MHz) with Display (403-440 12.5/25K MHz) (435-480 MHz) H = Portable AZ = Asia Regional Prefix...
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  • Page 15: Maintenance

    Section 2 MAINTENANCE Introduction This chapter provides details about the following: Preventive Maintenance ¥ ¥ Safe Handling of CMOS and LDMOS Devices ¥ ¥ General Repair Procedures and Techniques ¥ ¥ Disassembling and Reassembling the Radio ¥ ¥ Preventive Maintenance The radios do not require a scheduled preventive maintenance program;...

  • Page 16: Safe Handling Of Cmos And Ldmos Devices

    Wear a conductive wrist strap in series with a 100k resistor to ground. (Replacement ¥ ¥ ¥ wrist straps that connect to the bench top covering are Motorola part number RSX- 4015.) Do not wear nylon clothing while handling CMOS devices.

  • Page 17: Repair Procedures And Techniques Ñ General

    When damaged parts are replaced, identical parts should be used. If the identical replacement part is not locally available, check the parts list for the proper Motorola part number and order the part from the nearest Motorola Communications parts center listed in the Piece Parts section of this manual.

  • Page 18: Disassembling And Reassembling The Radio Ñ General

    The following tools are required for disassembling the radio: Phillips screwdriver ¥ ¥ ¥ 4mm socket wrench ¥ ¥ ¥ If a unit requires more complete testing or service than is customarily performed at the basic level, send this unit to a Motorola Authorized Service Center.

  • Page 19: Radio Disassembly Ñ Detailed

    Radio Disassembly Ñ Detailed Radio Disassembly Ñ Detailed Front Cover from Chassis Disassembly Turn off the radio. Remove the battery: Slide the battery clasp away from the radio (see ÒFigure 2-1Ó). Figure 2-1 Slide battery down and away from radio. Remove the antenna.
  • Page 20 Radio Disassembly Ñ Detailed the housing or the O-ring underneath. Lift rear chassis away from the front cover (see ÒFigure 2-3Ó). Be careful not to damage the speaker wire underneath. Figure 2-3 Slide the rear chassis downwards, and away from the front cover. Remove the speaker connector, which connects between RF Board and the internal speaker on front cover (see ÒFigure 2-4Ó).

  • Page 21: Control Board Disassembly

    Radio Disassembly Ñ Detailed Control Board Disassembly Remove the screws which hold the control board to the RF board. Remove the control board (the control board is connected to the RF board through a board- to-board connector -- see ÒFigure 2-5Ó). board-to-board connector Figure 2-5...

  • Page 22: Radio Reassembly Ñ Detailed

    Radio Reassembly Ñ Detailed Radio Reassembly Ñ Detailed RF Board Reassembly Place the RF board on the rear diecast. Tighten the screws and the stud. Control Board Reassembly Place the control board on the RF board. Connect the control board to the RF board by pressing it Þrmly downwards at the board-to- board connector (see ÒFigure 2-7Ó).
  • Page 23 Radio Reassembly Ñ Detailed Lower the front cover until the bottom edges snap Þrmly into place on the rear diecast (see ÒFigure 2-9Ó) Figure 2-9 Tighten the two (2) screws at the bottom of rear diecast using a screwdriver (see ÒFigure 2- 10Ó).
  • Page 24 2-10 Radio Reassembly Ñ Detailed Attach the On/Off Volume Knob, and Antenna. Figure 2-11 Completely Reassembled radio.

  • Page 25: Mechanical View And Parts List

    Mechanical View and Parts List 2-11 Mechanical View and Parts List Exploded View and Parts List Figure 2-12 Alpha Series Radio Exploded View...
  • Page 26 2-12 Mechanical View and Parts List Part Item Description Number DS1M001110 Front Cover Kit DS1M001120 Chassis Hardware Kit Rod (M2) Heatsink Tape Gasket (Screw M2.6) Screw M2.6 PCB Bracket Screw M2 CÞms External Tape DS1M001130 Knob Assembly Knob Spring (D4.75) DS1M001140 External Cover Kit External Cover...
  • Page 27 Mechanical View and Parts List 2-13 Part Item Description Number DSM2192006 Volume Gasket HLN9844 Beltclip DSM5190001 Back Housing DSM6189003 PTT Button Frequency dependant. Please see "Anten- Antenna nas" on page 6-1...

  • Page 28: Service Aids

    Table 2-1 lists service aids recommended for working on the Alpha Series 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 29: Test Equipment

    Test Equipment 2-15 10.0 Test Equipment Table 2-2 lists test equipment required to service the Alpha Series Radios and other two-way radios. Table 2-2 Recommended Test Equipment Motorola Part Description Characteristics Application R2000 or R2400 Service Monitor This monitor will...

  • Page 30: Programming Cable (Dsk001C706)

    2-16 Programming Cable (DSK001C706) 11.0 Programming Cable (DSK001C706) Figure 2-13 Programming Cable Schematic Figure 2-14 Pin ConÞguration of the Side Connector...

  • Page 31: If Test Box (Dsk001C702)

    IF Test Box (DSK001C702) 2-17 12.0 IF Test Box (DSK001C702) Figure 2-15 IF Test Box Schematic...
  • Page 32 2-18 This page is intentionally left blank.

  • Page 33: Radio Tuning

    Section 3 RADIO TUNING Introduction This chapter provides an overview of the software and hardware tuning for Alpha Series Radio. The Alpha Series Radios Universal Tuner is designed for use in a Windows 95/98/NT environment. This software and the Customer Programming Software (see page 4-1) essentially cover all the functions of the traditional Radio Service Software (RSS) package.
  • Page 34 Hardware Tuning Setup and Procedure Hardware Tuning Setup and Procedure There is a silver seal on the bottom left of the radio chassis. Remove the seal to expose the two potentiometers for audio and sub-audio (CTCSS) modulation adjustment. RV601, which is slightly higher, is the trimmer potentiometer for audio modulation tuning.

  • Page 35: Radio Programming

    Section 4 RADIO PROGRAMMING Introduction This chapter provides an overview of the Alpha Series Radios Customer Programming Software (CPS), which has been designed for use in a Windows 95/98/NT environment. An Installation instruction manual is contained within each kit. Description Kit Number Alpha Series Radio CPS Installation Kit (Disk) PMVN4059_...

  • Page 36: Programming Your Radio

    Programming Your Radio Programming Your Radio Overview of the Programming Process To prepare properly programmed radios for your customers, you should program your radio with all the necessary parameters, as required by your customers, and then clone these parameters over to all your customerÕs radios. Cloning Radio Parameters to User Radios Cloning duplicates the contents of Radio 1 (master radio) into Radio 2 (slave radio).

  • Page 37: Error Conditions

    Programming Your Radio Error Conditions An error may occur when cloning a radio. When this happens, an error message is displayed. The following lists the causes and the possible solutions for each error message. Error Message Description TIME OUT Data communications time-out. Please ensure that the slave radio is switched on, and the cloning cable is properly connected.

  • Page 38: Programming Mode

    Programming Mode Programming Mode Introduction This mode allows you to edit a number of features to enhance the use of this radio. Entering Programming Mode If the radio is turned on, turn it off. Press and hold the MON, and turn on the radio. A ringing tone is heard, which indicates that the radio is in Programming Mode.

  • Page 39: Editing Rw (Radio Wide) Parameters

    Programming Mode Press + Press - Programming Mode CH 001 CH 002 ..CH XXX (Radio Wide) Scan Upper Channel On/Off Squelch Level Press PTT Press PTT Press PTT Limit Scan Lower Rx Frequency Scan List (1,2,3) Limit Frequency Special PL (1,2,3) Tx Frequency Step Size Rx PL/DPL...
  • Page 40 Programming Mode Default Description Range from Remarks Parameter Factory SCANLST1 Scan List 1 1-01-XXX, 1-01-001, ¥ Up to 16 members per scan list. First member is É, 1-02-002, assigned as Priority Channel if Priority Scan is 1-16-XXX, ..., started. 1-16-016 ¥...
  • Page 41 Programming Mode Default Description Range from Remarks Parameter Factory RDPL-XXX Rx DPL RDPL-NOR, RDPL- ¥ Select RDPL-NOR to use the DPL codes listed Setting RDPL-INV under "4.9 DPL Codes" on page 19. ¥ Select RDPL-INV to invert the received DPL before decoding it.
  • Page 42 Programming Mode Default Description Range from Remarks Parameter Factory PRMT-XXX Prime Channel PRMT-OFF, PRMT-007 ¥ This feature is only valid if a Prime Channel is pro- Return Hang PRMT-001, grammed. Time ..., ¥ XXX denotes the time that the radio will stay idle in PRMT-015 a non-Prime channel before switching back to the Prime channel.
  • Page 43 Programming Mode Default Description Range from Remarks Parameter Factory IND ID Individual ID 8 charac- Blank ¥ IND ID is a unique ID for the radio. When the radio ters consist receives a Selcall which matches its IND ID, the of 1,2, É, 9, radio is said to have received an Individual Call.
  • Page 44 4-10 Programming Mode Default Description Range from Remarks Parameter Factory ALP-XXXX Button A Long ALP-DISP, ALP-PID See above. Press Action É (See above) BSP-XXXX Button B Short BSP-DISP, BSP-SQL See above. Press Action É (See above) BLP-XXXX Button B Long BLP-DISP, BLP-PHN See above.

  • Page 45: Editing Channel Parameters

    ¥ If CODE has been selected, then the PL and DPL will be displayed in Motorola code number format (see "4.8 PL Frequencies and Codes" on page 18 and "4.9 DPL Codes" on page 19).
  • Page 46 4-12 Programming Mode Default Channel Description Range from Remarks Parameter Factory RXXX.XXXX Channel Within the R136.0250 ¥ This is the frequency that the channel will use to Receive Fre- band limits receive message. quency of your ¥ You are not allowed to enter out-of-bounds frequen- model cies.
  • Page 47 Programming Mode 4-13 Default Channel Description Range from Remarks Parameter Factory TOC-XXX Turn Off Code/ TOC-OFF, TOC-ON ¥ TOC or Reverse Burst serves to cause the receiv- Reverse Burst TOC-ON ing radio to mute its speaker before a loss of carrier is detected.

  • Page 48: Editing Vfo Parameters

    4-14 Programming Mode Default Channel Description Range from Remarks Parameter Factory SCPL-XXX PL Required SCPL-OFF, SCPL-OFF ¥ Select if the channel Rx PL/DPL is required for for Selcall SCPL-ON qualifying the incoming Selcall. ¥ If enabled, incoming Selcall would be checked for matching Rx PL/DPL before radio would unsquelch.
  • Page 49 Programming Mode 4-15 Default Channel Description Range from Remarks Parameter Factory RXXX.XXXX VFO Receive Within the R136.0000 ¥ This is the frequency the VFO uses to receive mes- Frequency band limits sages. of your ¥ You are not allowed to enter out-of-bound frequen- model cies.
  • Page 50 4-16 Programming Mode Default Channel Description Range from Remarks Parameter Factory RPL-OFF ¥ This is the PL or DPL code that the VFO will use to RPL-XXXX Channel When PL- Receive PL/ FREQ is unsquelch the receive message. selected in ¥...
  • Page 51 Programming Mode 4-17 Default Channel Description Range from Remarks Parameter Factory XXX-POWR Power Level HI-POWR, HI-POWR ¥ Select the power level required for the channel. LOW- ¥ HI-POWR transmits at the maximum tuned power. POWR, LOW-POWR is typically 1W and ECO-POWR, less ECO- than 500mW.

  • Page 52: Pl Frequencies And Codes

    4-18 Programming Mode PL Frequencies and Codes Motorola Equiv. PL Motorola Equiv. PL PL Freq (Hz) PL Freq (Hz) Code Code Code Code 136.5 69.3 141.3 71.9 146.2 74.4 151.4 156.7 79.7 162.2 82.5 167.9 85.4 173.8 88.5 179.9 91.5 186.2...

  • Page 53: Dpl Codes

    Programming Mode 4-19 DPL Codes Motorola Motorola Motorola Motorola Code Code Code Code Code Code Code Code 645* NOTE: The codes marked with an asterisk are not part of the 83 standard EIA/TIA-603 codes.

  • Page 54: Examples

    4-20 Programming Mode 4.10 Examples 4.10.1 Copying All Parameters from One Channel to Other Channel(s) Scenario: To copy the parameters in Channel 005 into the following channels - 029, 032, 045, 089 Steps: Enter Programming Mode, by pressing MON and turning on the radio. Press + or - to select CH 005.

  • Page 55: Programming An Id

    Programming Mode 4-21 Keypad Button Press Press Press Press Press Press Press SPACE 4.10.3 Setting Up a Scan List Scenario: To setup Scan List 2 with the following channels - CH 008, CH 036, CH 092, CH 083, CH 068. Steps: Enter Programming Mode, by pressing MON and turning on the radio.

  • Page 56: Programming Phone Number/Access Code/De-Access Code

    4-22 Programming Mode Press PTT or MON, when the complete ID has been entered. Turn off your radio, if you have completed the programming, or proceed to the next parame- ter. 4.10.5 Programming an Phone Number/Access Code/De-access Code Scenario: To program the phone number, 9-72886338 (where Ò-Ó represents a Pause digit), at memory location 8.

  • Page 57: Error Code Displays

    Section 5 ERROR CODE DISPLAYS Error Codes The radio performs cursory tests to determine if its basic electronics and software are in working order, during start-up and during operations. Problems detected during these tests are presented as error codes on the radio display. The presence of an error code should prompt the user that a problem exists and that a service technician should be contacted.
  • Page 58 This page is intentionally left blank.

  • Page 59: Antennas

    Section 6 ACCESSORIES Antennas PMAD4027_ 15cm Antenna, 136-155MHz PMAD4028_ 15cm Antenna, 148-174MHz PMAD4012_ 9cm Antenna, 136-155MHz PMAD4013_ 9cm Antenna, 155-174MHz PMAD4014_ 14cm Antenna, 136-155MHz PMAD4015_ 14cm Antenna, 155-174MHz HLN8262_ External Antenna Adapter (BNC connector) Carrying Accessories 4285820Z01 Shoulder Strap HLN9844_ Belt Clip (1.5") RLN4815_ Universal RadioPak Carry Case...

  • Page 60: Chargers

    MAG ONE Ultra-lightweight Headset with in-line PTT/Vox PMMN4008_ MAG ONE Remote Speaker Mic HMN9030_ Remote Speaker Microphone PMLN4294_ Ear Set Microphone with PTT PMLN4425_ Earset Boom Mic with remote Ring PTT Manuals 6804112J32 GP2000 User Guide (English) 6804112J49 GP2000 User Guide (Mandarin) 6804112J41 GP2000 Service Manual...

  • Page 61: Service Kits

    Service Kits Service Kits PMVN4059_ Alpha Series Radio CPS Installation Kit (Disk) PMVN4061_ Alpha Series Radio CPS Installation Kit (CD) PMVN4060_ Tuner Installation Kit (Disk) PMVN4062_ Tuner Installation Kit (CD)
  • Page 62 This page is intentionally left blank.

  • Page 63: Vhf Band Information (136-174 Mhz)

    VHF BAND INFORMATION (136-174 MHZ) Model Chart VHF, 136-174 MHz Model Description AZH49KDH8AA9 GP2000, 136-174, 5W, 12.5/25K-99ch AZH49KDH8AA9 GP2000, 136-174, 5W, 12.5/25K-99ch (SKD model) Item Description X PMUD1738_ GP2000, 136-174, 1/5W, 12.5/25K X PMUD1739_ GP2000, 136-174, 1/5W, 12.5/25K DT X DS1M001110...
  • Page 64 Model Chart VHF, 136-174 MHz Model Description 6804112J32 GP2000 User Guide (English) X 6804112J49 GP2000 User Guide (Chinese) x = Indicates one of each is required.

  • Page 65: Specifications

    Specifications SpeciÞcations Transmitter General RF Output High NiMH @ 7.5V: Frequency: 136-174 MHz Channel Spacing 12.5/25 kHz Channel Capacity: Freq. Stability 0.00025% (-30°C to +60°C) 7.5 Volts ±20% Power Supply: Spurs/Harmonics: -26 dBm Dimensions with Standard High 113.5mm x 56mm x Audio Response: Capacity NiMH 35mm...

  • Page 66: Theory Of Operation

    Theory of Operation Theory of Operation General Information Your radio has two printed circuit boards: the Controller board, and the Radio Frequency (RF) board. The Controller board contains the CPU/Control section. The RF board contains the VCO/ Synthesizer section, Transmitter section, Receiver section, Transmitter Audio circuitry, Receiver Audio circuitry, and Battery section.

  • Page 67: Cpu / Control Section

    Theory of Operation This personality data is used to initialize the radio. The radio restores last power up state (i.e. state before the radio was turned-off). Power is supplied to PLL circuitry. Power is supplied to Rx and Rx VCO circuitry. 10.

  • Page 68: Transmitter Section

    Theory of Operation 3.5.3 Synthesizer The frequency synthesizer is a large-scale monolithic synthesizer integrated circuit Q323. The synthesizer IC contains a dual modulus prescaler, programmable divide-by-N counter, prescale control (swallow) counter, reference oscillator, reference divider, phase detector, charge pump and lock detector.

  • Page 69: Receiver Section

    Theory of Operation 3.6.2 Antenna Switching Switching of the antenna between the transmitter and the receiver is accomplished by the antenna transmit/receive switch consisting of diodes Q409 and Q410. In the transmit mode, switched TX B+ is applied through R419 and RF choke L417, hard forward biasing the two diodes on Q410, thus permiting the ßow of RF power from the output of the low-pass Þlter.

  • Page 70: Battery Section

    Theory of Operation C486, L404-L406, Q405 and R410. The output from the band-pass Þlter is directed to the mixerÕs Q407/L407. 3.7.2 Local Oscillator (LO) The Receive VCO (C344-C351, L302, L305, L306, L312-L314, Q311, and Q324) provides the LO signal. The VCO is running at 45.1 MHz above the desired receive frequency and is applied to output Buffer Q308/Q416.

  • Page 71: Block Diagrams

    Block Diagrams Block Diagrams Complete...

  • Page 72: Controller

    7-10 Block Diagrams Controller CN101 Divide DTMF CPU Pin36 M101 by 2 Decode Q122 Q120 EEPROM Q114 CPU Pin22 NETWORK Pin21 Q101 Q125 NETWORK Reset Q105 DIODE Q126 Pin87 X,tal Shift 8.38MHz Converter S102 S101 LC101 Q102 X101 Q121 DC/DC Power RX Local Converter...

  • Page 73: Transmitter

    Block Diagrams 7-11 Transmitter To Receiver Hamonics Filter Switch TX +B C440-445,L415,416 Q409,410 Matching Network C446-448,451,452 L418,419 Final Buffer Coupler Pre Driver P in R445 Q412 Q413 Q411 Q414 Power Control TX 5V Q419 Receiver 2-Pole 2-Pole 2-Pole Band Pass Band Pass Mixer Crystal...
  • Page 74 7-12 This page is intentionally left blank.

  • Page 75: Circuit Board/Schematic Diagrams And Parts List

    Circuit Board/Schematic Diagrams and Parts List Section 7 -13 Circuit Board/Schematic Diagrams and Parts List Q118 Q119 Q116 R107 Q115 LC101 M101 DOWN Top Side Bottom Side Controller Board...

  • Page 76: Vhf 136-174 Mhz Main Board Top Side

    Section 7 -14 Circuit Board/Schematic Diagrams and Parts List VHF 136-174 MHz Main Board Top Side...

  • Page 77: Vhf 136-174 Mhz Main Board Bottom Side

    Circuit Board/Schematic Diagrams and Parts List Section 7 -15 VHF 136-174 MHz Main Board Bottom Side...

  • Page 78: Complete Controller Board Schematic Diagram

    Section 7 -16 Circuit Board/Schematic Diagrams and Parts List Complete Controller Board Schematic Diagram...

  • Page 79: Vhf 136-174 Mhz Rf Board Schematic Diagram

    Circuit Board/Schematic Diagrams and Parts List Section 7 -17 Q510 C550 C411 NJM2107 0.01(ECHU) 100p C490 R415 C506 C424 0.71 100p C427 330K C551 R414 0.01(ECHU) Q407 C514 C415 C417 C422 C429 HSMS-2817(B7) 0.01 R406 R407 L409 L411 150p 150p C425 20p 0.022 C495...

  • Page 80: Vhf 136-174 Mhz Radio Parts List (Controller Board)

    Section 7 -18 Circuit Board/Schematic Diagrams and Parts List VHF 136-174 MHz Radio Parts List (Controller Board) Vendor Part Motorola Equivalent Circuit Ref Description Vendor Number Part Number Vendor Part Motorola Equivalent C160 47pF; 50V; +-5% Murata GRM39CH470J50PT 2113740F43 Circuit Ref...
  • Page 81 Circuit Board/Schematic Diagrams and Parts List Section 7 -19 Vendor Part Motorola Equivalent Vendor Part Motorola Equivalent Circuit Ref Description Vendor Circuit Ref Description Vendor Number Part Number Number Part Number R110 51 K ohm; 0.1W; +-5% Rohm MCR03 EZHJ 513...
  • Page 82 Section 7 -20 Circuit Board/Schematic Diagrams and Parts List Vendor Part Motorola Equivalent Vendor Part Motorola Equivalent Circuit Ref Description Vendor Circuit Ref Description Vendor Number Part Number Number Part Number C336 33pF; 50V; +-5% Murata GRM39UJ330J50PT C419 100pF; 50V; +-5%...
  • Page 83 Circuit Board/Schematic Diagrams and Parts List Section 7 -21 Vendor Part Motorola Equivalent Vendor Part Motorola Equivalent Circuit Ref Description Vendor Circuit Ref Description Vendor Number Part Number Number Part Number C471 5pF; 50V; +-0.25pF Murata GRM39CH050C50PT C533 47pF; 50V; +-5%...
  • Page 84 Section 7 -22 Circuit Board/Schematic Diagrams and Parts List Vendor Part Motorola Equivalent Vendor Part Motorola Equivalent Circuit Ref Description Vendor Circuit Ref Description Vendor Number Part Number Number Part Number C641 1pF; 6.3V; +-10% Murata GRM39B105K6.3PT 2113928P04 Q504 Rohm...
  • Page 85 Circuit Board/Schematic Diagrams and Parts List Section 7 -23 Vendor Part Motorola Equivalent Vendor Part Motorola Equivalent Circuit Ref Description Vendor Circuit Ref Description Vendor Number Part Number Number Part Number Q702 ÒIC, Audio AmpliÞerÓ Philips TDA8541T/N1 DSIC174004 J401 Antenna Jack...
  • Page 86 Section 7 -24 Circuit Board/Schematic Diagrams and Parts List Vendor Part Motorola Equivalent Vendor Part Motorola Equivalent Circuit Ref Description Vendor Circuit Ref Description Vendor Number Part Number Number Part Number R328 Not Placed ------------ ------------ ------------ R422 56 ohm; 0.1W; +-5%...
  • Page 87 Circuit Board/Schematic Diagrams and Parts List Section 7 -25 Vendor Part Motorola Equivalent Vendor Part Motorola Equivalent Circuit Ref Description Vendor Circuit Ref Description Vendor Number Part Number Number Part Number R515 25.5 K ohm; 0.1W; +-1% Rohm MCR03 EZHF 2552...
  • Page 88 Section 7 -26 Circuit Board/Schematic Diagrams and Parts List Vendor Part Motorola Equivalent Circuit Ref Description Vendor Number Part Number R708 2.2 K ohm; 0.1W; +-5% Rohm MCR03 EZHJ 222 0662057A57 R709 0.27 ohm; 0.125W; +-5% Rohm MCR10 EZHJ R27...

  • Page 89: Troubleshooting Charts

    Troubleshooting charts Section 7 -27 Troubleshooting charts Start Very low or no 12 Check IFIC dB SINAD Q506 (see Are VDC of Is 2nd LO on pin 4 and below) freq? 10 of IFIC Noise at spkr Noise at pin 9 Check VDC of when radio is of IFIC Q506?

  • Page 90: Troubleshooting Flow Chart For Transmitter

    Section 7 -28 Troubleshooting charts Start Power Check Q201, Q202 +5vTX and TXB+ & U151 1. Check Pin Diodes current 2. Check Harmonic Filter Check TP308 Voltages in High or Low? Power Control Inspect/Repair Circuit TX Output Network HIGH Check Pin3 to Q419 Power Check...

  • Page 91: Troubleshooting Flow Chart For Synthesizer

    Troubleshooting charts Section 7 -29 Start Visual Correct check of the Problem Board OK? Check 5V Regulator Is Q314 Emit- terAT=13VD +5VQ323 at Pins Is 14.4MHz Check 3, 4 Signal at X301,C337,C338,C336 Q323 Pin 1? Check Q301, L303,C303,R301, C304 & R302 Connection Are signals Is Q310 Pin 2...

  • Page 92: Troubleshooting Flow Chart For Microcontroller

    Section 7 -30 Troubleshooting charts START APPLY POWER TO RADIO AND TURN ON NO/DONÕT ARE ALERT TONES WAS GOOD OR BAD POWER-ON KNOW ENABLED IN SPM BEEP PRESENT USE SPM TO ENABLE TONES INVOKE FACTORY WAS GOOD POWER-ON BEEP RESET IN SPM PRESENT DONE WAS GOOD POWER...

  • Page 93: Troubleshooting Flow Chart For Vco

    Troubleshooting charts Section 7 -31 TX VCO RX VCO Power OK but no Low or no power Low or no Power Modulation at Pin 4 of Mixer at Input to PA Visual check Correct VisualCheck =151 mVrms Replace of Board OK? Problem of Board OK? at Ò+Ó...
  • Page 94 Section 7 -32 This page is intentionally left blank.

  • Page 95: Glossary Of Terms

    COM port. The computerÕs CPS Com Port settings are indepen- dent of each other and apply to the Read and Write features. Acronym for Customer Programming Software. Licensed Motorola software used to program two-way radios with a unique set of features.
  • Page 96 Term DeÞnition DTMF Dual-Tone Multi-frequency. A Signaling System protocol widely used in the tele- phone industry. Two tones are transmitted simultaneously at different ampli- tudes for each keypad key press. A sequential series of Dual Tones makes a data word. DTMF Tx Tone DTMF Tx Tone Duration is the amount of time that a DTMF tone is transmitted Duration...
  • Page 97 Term DeÞnition Normal Scan For Normal Scan, the radio assigns equal priority to all members in the Scan List selected for the current channel. When the radio is scanning a Scan List (Active Scan), all scan list members (including the Home Channel) will be allo- cated equal time to be scanned.
  • Page 98 Term DeÞnition Private Line (PL) A sub-audible tone/code used to create unique/private communication groups while operating in Conventional Dispatch mode. A generic term for Tone Private Line (TPL), or Digital Private Line (DPL). Program The transfer of CPS information from the computerÕs temporary memory (RAM) to the radio.
  • Page 99 Term DeÞnition Rx TPL Frequency A designated frequency used when receiving Tone Private Line (TPL), while operating on the current channel. This frequency can directly correlate to the Rx TPL Code Þeld; however, non standard code frequencies may also be se- lected.
  • Page 100 Term DeÞnition Tx DPL Invert Setting Tx DPL Invert causes Digital Private Line (DPL) signals to be inverted before they are transmitted from the radio, while operating on the current chan- nel. Inverted coding allows for more trafÞc/usage on frequencies. Tx Frequency A designated frequency used when transmitting carrier for the current channel.
  • Page 101 Service Manuals need to be updated accordingly. If you wish to be informed of these updates, kindly Þll in and fax us your details. Fax to: 6-04-6124944 The Technical Publications Coordinator, Media and Communications, R&D Department, Motorola Penang. Your Details Name/Contact Person: Company Name: Address: Telephone No.: Fax No.:...
  • Page 102 Kindly take a few moments to provide feedback on this manual. Thank you for your cooperation. Fax to: 6-04-6124944 The Technical Publications Coordinator, Media and Communications, R&D Department, Motorola Penang. 1. Please check all the appropriate boxes: Disassembly Pro- cedures Alignment...

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