Motorola ASTRO XTS 3000 R Detailed Service Manual
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Motorola ASTRO XTS 3000 R Detailed Service Manual

Motorola ASTRO XTS 3000 R Detailed Service Manual

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Digital XTS 3000™
and XTS 3000 R™
Portable Radios
Detailed Service Manual

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Summary of Contents for Motorola ASTRO XTS 3000 R

  • Page 1 ™ Digital XTS 3000™ and XTS 3000 R™ Portable Radios Detailed Service Manual...

  • Page 2: Foreword

    Motorola. Fur- thermore, the purchase of Motorola products shall not be deemed to grant either directly or by implica- tion, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty free license to use that arises by operation of law in the sale of a product.

  • Page 3: Table Of Contents

    Antenna Switch ............. . .4-3 ® 1997, 1998, 2001 by Motorola Inc., Radio Products Group Detailed Service Manual 8000 W.
  • Page 4 Receiver Front End ............4-3 Receiver Back End .

  • Page 5: Related Publications

    General Information ............8-5 Specialized Test Equipment .
  • Page 6 List of Figures Figure 1 Controller Board/Vocoder Board Interconnection......2-4 Figure 2 B+ Routing for VHF/UHF Transceiver Boards......3-2 Figure 3 B+ Routing for 800MHz Transceiver Boards.
  • Page 7 NLE4250B, NLE4250E UHF Range 2 RF Board Schematic Diagram, Sheet 1 of 3 ..........13-24 NLE4250B, NLE4250E UHF Range 2 RF Board Schematic Diagram, Sheet 2 of 3 .

  • Page 8: Safety

    RF energy. Portable 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 9 DO NOT hold the antenna when the radio is “IN USE”. 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 radio’s User Guide. Electromagnetic Interference/Compatibility...
  • Page 10 • use the ear opposite the pacemaker to minimize the potential for interference. • turn the radio OFF immediately if you have any reason to suspect that interference is taking place. • Hearing Aids Some digital wireless radios may interfere with some hearing aids. In the event of such interference, you may want to consult your hearing aid manufacturer to discuss alternatives.
  • Page 11 OPERATIONAL CAUTIONS ANTENNAS Do not use any portable radio that has a damaged antenna. If a damaged antenna comes into contact with your skin, a minor burn can result. C a u t i o n BATTERIES All batteries can cause property damage and/or bodily injury such as burns if a conductive material such as jewelry, keys, or beaded chains touch exposed terminals.
  • Page 12 REPAIRS FOR MOTOROLA PRODUCTS WITH FMRC APPROVAL ARE THE RESPONSIBILITY OF THE USER. You should not repair or relabel any Motorola- manufactured communication equipment bearing the FMRC Approval label (“FMRC Approved Product”) unless you are familiar with the current FMRC Approval standard for repairs and service (“Class Number 3605”).
  • Page 13 Approved model. Do Not Substitute Options or Accessories The Motorola communications equipment certified by Factory Mutual is tested as a system and consists of the FM Approved portable, FM Approved battery, and FM Approved accessories or options, or both. This FM Approved portable and battery combination must be strictly observed.
  • Page 14 Notes:...

  • Page 15: Portable Radio Model Numbering System

    Portable Radio Model Numbering System Typical Model Number: Position: 12 13 Positions 13 - 16 Position 1 - Type of Unit “SP” Model Suffix H = Hand-Held Portable Position 12 - Unique Model Variations Positions 2 & 3 - Model Series C = Cenelec 09 = XTS 3000 04 = ASTRO...

  • Page 16: Astro Digital Xts 3000 Model Chart ("A" Models)

    ASTRO Digital XTS 3000 Model Chart (“A” Models) MODEL NUMBER DESCRIPTION H09KDC9PW5AN VHF 1-5 Watt ASTRO Digital XTS 3000 Model I H09KDF9PW7AN VHF 1-5 Watt ASTRO Digital XTS 3000 Model II H09KDH9PW7AN VHF 1-5 Watt ASTRO Digital XTS 3000 Model III H09RDC9PW5AN UHF Range 1 1-4 Watt ASTRO Digital XTS 3000 Model I H09RDF9PW7AN...

  • Page 17: Astro Digital Xts 3000 Model Chart ("B" Models)

    ASTRO Digital XTS 3000 Model Chart (”B” Models) MODEL NUMBER DESCRIPTION H09KDC9PW5BN VHF 1-5 Watt ASTRO Digital XTS 3000 Model I H09KDF9PW7BN VHF 1-5 Watt ASTRO Digital XTS 3000 Model II H09KDH9PW7BN VHF 1-5 Watt ASTRO Digital XTS 3000 Model III H09RDC9PW5BN UHF Range 1 1-4 Watt ASTRO Digital XTS 3000 Model I H09RDF9PW7BN...

  • Page 18: Astro Digital Xts 3000 R (Ruggedized) Model Chart

    ASTRO Digital XTS 3000 R (Ruggedized) Model Chart MODEL NUMBER DESCRIPTION H09KDC9PW5BN Ruggedized VHF 1-5 Watt ASTRO Digital XTS 3000 Model I H09KDF9PW7BN Ruggedized VHF 1-5 Watt ASTRO Digital XTS 3000 Model II H09KDH9PW7BN Ruggedized VHF 1-5 Watt ASTRO Digital XTS 3000 Model III H09RDC9PW5BN Ruggedized UHF Range 1 1-4 Watt ASTRO Digital XTS 3000 Model I H09RDF9PW7BN...

  • Page 19: Astro Digital Xts 3000 R (Ruggedized) Yellow Model Chart

    ASTRO Digital XTS 3000 R (Ruggedized) Yellow Model Chart MODEL NUMBER DESCRIPTION H09KDC9PW5BN Ruggedized Yellow VHF 1-5 Watt ASTRO Digital XTS 3000 Model I H09KDF9PW7BN Ruggedized Yellow VHF 1-5 Watt ASTRO Digital XTS 3000 Model II H09KDH9PW7BN Ruggedized Yellow VHF 1-5 Watt ASTRO Digital XTS 3000 Model III H09RDC9PW5BN Ruggedized Yellow UHF Range 1 1-4 Watt ASTRO Digital XTS 3000 Model I H09RDF9PW7BN...

  • Page 20: Model History Tables

    Model History Tables The following tables include all of the ASTRO XTS 3000 Digital Portable Radio models from the beginning of this product line to date. Each table includes model number, model number description, and the part numbers of the front cover kit, transceiver board (Xcvr Bd), controller board, and vocoder board that shipped with that particular model.
  • Page 21 Standard Models Front Xcvr Controller Vocoder Model Number Description Cover Kit Board Board Board NTN8250C NUF6472B H09UCC9PW5AN 800MHz 3 Watt Model I NTN8272C NCN6128B NTN8250D NUF6472B 800MHz 3 Watt Model I NTN8751A NCN6167A NTN8250D H09UCC9PW5BN NUF6472B NTN8250C NUF6472B H09UCF9PW7AN 800MHz 3 Watt Model II NTN8495A NCN6128B NTN8250D...
  • Page 22 Ruggedized Models Front Cover Transceiver Controller Vocoder Model Number Description Board Board Board VHF 1-5 Watt Model I NTN8650A NLD8898E NCN6167A NTN8250D H09KDC9PW5BN VHF 1-5 Watt Model II NLD8898E NCN6167A NTN8250D H09KDF9PW7BN NTN8651A VHF 1-5 Watt Model III NTN8652A NLD8898E NCN6167A NTN8250D H09KDH9PW7BN...

  • Page 23: Glossary

    FLASHcodes are only applicable for radios which are upgradeable through the FLASHport process. FLASHport™ A Motorola term that describes the ability of a radio to change memory. Every FLASHport radio contains a FLASHport EEPROM memory chip that can be software written and rewritten to, again and again.
  • Page 24 MicroControl Unit Motorola Digital Communications OMPAC Over-Molded Pad-Array Carrier; a Motorola custom IC package, distinguished by the presence of solder balls on the bottom pads. Open A controller configuration that utilizes a microprocessor with extended ROM, Architecture RAM, and EEPROM.
  • Page 25 SCI IN Serial Communication Interface INput line SLIC Support-Logic IC; a custom gate array used to provide I/O and memory expansion for the microcontroller. Smart RIB Smart Radio Interface Box; a service aid that enables communications between the radio and the computer’s serial communications adapter. Used in conjunction with the RSS to read the DSP Code, FLASHcode, Host Code, and model number.
  • Page 26 Notes xxiv...

  • Page 27: Introduction

    This manual is to be used in conjunction with the ASTRO Digital XTS 3000 Portable Radios Basic Service Manual (Motorola part number 68P81083C85), which uses the pass/fail service approach to radio problems. Conduct the basic performance checks first. This will verify the actual need for analyzing the radio and help pinpoint the functional problem area.

  • Page 28: Notations Used In This Manual

    Notations Used in Throughout the text in this publication, you will notice the use of warnings, cautions, and notes. These notations are used to emphasize This Manual that safety hazards exist, and care must be taken and observed. NOTE: An operational procedure, practice, or condition, etc., which is essential to emphasize.

  • Page 29: General Overview Of An Astro Digital Xts 3000 Radio

    General Overview of an ASTRO Digital XTS 3000 Radio The ASTRO Digital XTS 3000 radio is a dual-mode (trunked/ conventional), microcontroller-based transceiver incorporating a Digital Signal Processor (DSP). The microcontroller handles the general radio control, monitors status, and processes commands input from the keypad or other user controls.

  • Page 30: Analog Mode Of Operation

    The display module is a four-line x 12-character, liquid-crystal display (LCD) with associated circuitry. This module utilizes chip-on-board technology and is not considered field repairable. The keypad module is either a 6 x 3- or a 2 x 3-button module with backlighting.

  • Page 31: Transceiver Board Overview

    Transceiver Board The receiver front end consists of a preselector, an RF amplifier, a second preselector, and a mixer. In the VHF and UHF radios, both Overview preselectors are varactor-tuned, two-pole filters controlled by the microcontrol unit (MCU) through the digital/analog (D/A) IC. On the 800MHz receiver front end, these filters are fixed-tuned.

  • Page 32: Figure 1 Controller Board/Vocoder Board Interconnection

    Vocoder Board SRAM DSP56001A SRAM SRAM ADSIC 256K x 8 FLASH 50-pin Connection to Vocoder Board 20-pin 7-pin Controller Board Connection to Connection to RF Board Display Module 32K x 8 Switching EEPROM Regulator HC11F1 Circuit 12-pin µP Connection to 25-pin Keypad Module 32K x 8...

  • Page 33: Vocoder Board Overview

    Vocoder Board The vocoder board (see Figure 1) contains the radio’s DSP and ADSIC circuitry. It is responsible for all voice and data processing and Overview signalling. The DSP performs all signalling and voice encoding and decoding as well as audio filtering and volume control. This includes Private- ®...

  • Page 34: Notes

    Notes...

  • Page 35: Radio Power

    Radio Power Introduction to This section of the manual provides a detailed circuit description of the power distribution for an ASTRO Digital XTS 3000 radio. This Section General In the ASTRO XTS 3000 radio, power (B+) is distributed to two boards: the transceiver board and the controller board.

  • Page 36: Figure 2 B+ Routing For Vhf/Uhf Transceiver Boards

    To/From Controller Board Raw B+ SW B+ VHF/UHF Transceiver Board Fuse UNSW B+ Battery L105 7.5V RF PA Module CR109 CR108 U105 ALC U101 VCOB IC RF Amp 5V Regulator L122 L121 U1/Q1 U201 U202 Mixer Q107 RX/TX 5V Regulator Synth Ref Osc ABACUS...

  • Page 37: B+ Routing For 800Mhz Transceiver Boards

    B+ Routing for Refer to Figure 3 and the appropriate schematic diagram. 800MHz Raw B+ (7.5V) from the battery (Batt B+) enters the radio on the Transceiver Boards transceiver board through a 3-contact connector (J3). From J3 it is routed through four ferrite beads (E1, E2, E3, E4) and applied to the RF power amplifier (U502) and the ALC IC (U504).

  • Page 38: B+ And +5V Routing For Controller And Vocoder Boards

    B+ and +5V Routing Refer to Figures 4 and 5 and the appropriate schematic diagrams. for Controller and Power for the radio is derived from a 7.5 volt battery, which is applied Vocoder Boards to the transceiver board through J3. This Raw B+, or unswitched B+ (UNSW B+), is routed to J1 on the transceiver board and then on to P201 on the controller board.

  • Page 39: Figure 4 B+ Routing For Controller Board

    Controls Flex On/Off Switch Secure Module B+_Sense UNSW_B+ SW_B+ P201 UNSW_B+ UNSW_B+ To/From SW_B+ Switch Audio PA RF Board Q106 U718 SW_B+ +5V Analog To Vocoder 5V Regulator Board U710 Q105 B+_CNTL +5V Digital To Vocoder 5V Regulator Board U709 HC11F1 SLIC V U702...

  • Page 40: Figure 5 +5V Routing For Vocoder Board

    32K x 8 SRAM U401 +5V Digital From Controller 32K x 8 Board DSP56001A SRAM U405 U402 32K x 8 ADSIC SRAM U406 U403 256K x 8 FLASH U404 +5V Analog From Controller Board Vocoder Board MAEPF-25997-O Figure 5 +5V Routing for Vocoder Board...

  • Page 41: Vhf/Uhf Transceiver Board Detailed Theory Of Operation

    VHF/UHF Transceiver Board Detailed Theory of Operation Introduction to This section of the manual provides a detailed circuit description of the ASTRO Digital XTS 3000 VHF and UHF transceiver boards. When This Section reading the theory of operation, refer to the appropriate schematic and component location diagrams located in the back section of this manual.
  • Page 42 If the two frequencies in the synthesizer’s comparator differ, a control (error) voltage is produced. The phase detector error voltage (V control) at pins 31 and 33 of U204 is applied to the loop filter consisting of resistors R211, R212, and R213, and capacitors C244, C246, C247, and C248.

  • Page 43: Antenna Switch

    Antenna Switch Two antenna switches are part of the radio circuitry. One of the switches is a mechanical connector that attaches to the external antenna bushing. It switches between the radio antenna and a remote antenna. Switching is accomplished by a plunger located on the accessory connector.

  • Page 44: Receiver Back End

    The RF signal is applied to the mixer at U2 pins 1 and 15. An injection signal (1st LO) of about -10dBm, supplied by the FGU, is applied to U2, pin 8. Mixing of the RF and the 1st LO results in an output signal that is the first IF frequency.

  • Page 45: Transmitter

    Transmitter The transmitter consists of three major sections: • Harmonic Filter • RF Power Amplifier Module • ALC Circuits Harmonic Filter RF from the power amplifier (PA) module (U105) is routed through the coupler (U104), passed through the transmit antenna switch (CR108), and applied to a harmonic filtering network in UHF.

  • Page 46: Notes

    Notes...

  • Page 47: Frequency Synthesis

    800MHz Transceiver Board Detailed Theory of Operation Introduction to This section of the manual provides a detailed circuit description of an ASTRO Digital XTS 3000 800MHz Transceiver Board. When reading This Section the theory of operation, refer to your appropriate schematic and component location diagrams located in the back section of this manual.
  • Page 48 both be high; • for talkaround TX frequencies 851-870MHz, pin 6 must be low while pin 7 must be high. The synthesizer IC (U302) consists of a prescaler, a programmable loop divider, a divider control logic, a phase detector, a charge pump, an A/D converter for low-frequency digital modulation, a balance attenuator to balance the high-frequency analog modulation to the low-frequency digital modulation, a 13V positive-voltage multiplier, a...
  • Page 49 Antenna Switch Switching between the standard and external antenna ports is accomplished with the external mechanical switch that is actuated by a plunger, located on the accessory connector. An electronic PIN diode switch steers RF between the receiver and transmitter. The common node of the switch is at capacitor C101. In the transmit mode, RF is routed to the anode of diode CR104.
  • Page 50 Since low-side injection is used, the LO frequency is offset below the RF carrier by 73.35MHz, or Flo = Frf - 73.35MHz. The mixer utilizes GaAs FETs in a double-balanced, Gilbert Cell configuration. The LO port (pin 8) incorporates an internal buffer and a phase shift network to eliminate the need for a LO transformer.
  • Page 51 The second LO/VCO is a Colpitts oscillator built around transistor Q1. The VCO has a varactor diode (VR401), which is used to adjust the VCO frequency. The control signal for the varactor is derived from a loop filter consisting of C426, C428, and R413. Transmitter The 800MHz RF power amplifier (PA) is a five-stage amplifier (U502).
  • Page 52 Notes...

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