Page 1 ® ® ASTRO Digital Spectra and Digital Spectra Plus 800 MHz Mobile Radios Detailed Service Manual...
Page 2 Motorola, Inc. 8000 West Sunrise Boulevard Ft. Lauderdale, FL 33322 MOTOROLA, the Stylized M Logo, ASTRO and Spectra are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their respective owners.
Page 3 Title Page ® Digital Spectra ® and Digital Spectra Plus VHF/UHF/800 MHz Mobile Radios Detailed Service Manual Motorola, Inc. 8000 West Sunrise Boulevard 6881076C25-D Fort Lauderdale, Florida 33322...
Page 4: Foreword
ASTRO Digital Spectra Plus mobile radios (models W3, W4, W5, W7, and W9) to the component level. For the most part, the information in this manual pertains to both ASTRO Digital Spectra and ASTRO Digital Spectra Plus radios. Exceptions are clearly noted where they occur.
Page 5: Table Of Contents
ASTRO Digital Spectra UHF 50–110 Watt Model Chart ................. xxx ASTRO Digital Spectra 800 MHz Model Chart..................xxxii ASTRO Digital Spectra Plus VHF 25–50 and 50–110 Watt Model Chart..........xxxiii ASTRO Digital Spectra Plus UHF 20–40 Watt Model Chart ..............xxxv ASTRO Digital Spectra Plus UHF 50–110 Watt Model Chart ..............xxxvii...
Page 6 Table of Contents Chapter 2 General Overview ..............2-1 Introduction.............................2-1 Analog Mode of Operation ......................2-2 ASTRO Mode of Operation ......................2-2 Control Head Assembly........................2-2 2.4.1 Display (W3 Model) ......................2-2 2.4.2 Display (W4, W5, and W7 Models) ...................2-2 2.4.3 Display (W9 Model) ......................2-3 2.4.4 Vacuum Fluorescent Display Driver ..................2-3 2.4.5...
Page 7 Table of Contents 3.2.4 Regulators ........................3-10 3.2.5 Reset Circuits ........................3-10 3.2.6 Serial Communications on the External Bus ..............3-11 3.2.7 Synchronous Serial Bus (MOSI) ..................3-12 3.2.8 Received Audio .......................3-12 3.2.9 Microphone Audio ......................3-12 3.2.10 Transmit Deviation ......................3-13 3.2.11 RS-232 Line Driver ......................3-13 3.2.12 Flash Programming ......................3-13 3.2.13 Encryption Voltages ......................3-13 3.2.14 Regulator and Power-Control IC ..................3-14...
Page 8 Table of Contents 3.5.2.9 Doubler........................3-50 3.5.2.10 Synthesizer Feedback....................3-50 3.5.2.11 Second Buffer......................3-50 3.5.2.12 Receive/Transmit Switch..................3-50 3.5.3 800 MHz Band.........................3-50 3.5.3.1 General........................3-50 3.5.3.2 Super Filter 8.6 V ....................3-50 3.5.3.3 VCO........................3-50 3.5.3.4 Receive Mode-AUX 1* and AUX 2* High ...............3-51 3.5.3.5 Transmit Mode-AUX 1* High; AUX 2* Low.............3-51 3.5.3.6 TalkAround Mode-AUX 1* Low;...
Page 9 Table of Contents Chapter 4 Troubleshooting Procedures..........4-1 ASTRO Spectra Procedures ......................4-1 4.1.1 Handling Precautions ......................4-1 4.1.2 Voltage Measurement and Signal Tracing ................4-2 4.1.3 Power-Up Self-Check Errors .....................4-2 4.1.3.1 Power-Up Sequence ....................4-3 4.1.4 RF Board Troubleshooting ....................4-5 4.1.4.1 Display Flashes “FAIL 001” ..................4-5 4.1.4.1.1 Incorrect Values at U602, Pin 19...............4-6 4.1.4.1.2 Incorrect Values at U602 Pin 25 (MODULUS CONTROL)........4-7 4.1.4.1.3 Incorrect Voltage at Positive Steering Line ............4-7...
Page 10 viii Table of Contents 4.5.1.3.1 General Troubleshooting and Repair Notes............4-38 4.5.1.3.2 PA Functional Testing ..................4-39 4.5.1.3.3 Localizing Problems ..................4-42 4.5.1.3.4 Isolating Failures .....................4-43 4.5.1.3.5 Power Control and Protection Circuitry ............4-45 4.5.2 UHF Band........................4-47 4.5.2.1 High-Power Amplifier....................4-47 4.5.2.1.1 General Troubleshooting and Repair Notes............4-47 4.5.2.1.2 PA Functional Testing ..................4-51 4.5.2.1.3 Power Control and Protection Circuitry ............4-54 4.5.2.2...
Page 11 Waveform W7: Receive Audio .......................6-5 Waveform W8: Transmit Audio ......................6-5 Waveform W9: Power-Down Reset....................6-6 Waveform W10: ADSIC 2.4 MHz Reference..................6-6 ASTRO Digital Spectra Plus VOCON Board Waveforms...............6-7 32 kHz Clock Waveform.........................6-7 16.8 MHz Clock Waveform......................6-8 TX Modulation Out Waveform ......................6-8 Differential ADDAG Output Waveform ...................6-9...
Page 12 Table of Contents HRN6019C 800 MHz RF Board Schematic Diagram (Sheet 2 of 2)........7-13 HRN4009E/HRN6014D VHF RF Board, HRN4010D/HRN6020C UHF RF Board, and HRN6019C 800 MHz RF Component Location Diagram............7-14 Command Board Section ......................7-17 HLN5558E/F/G, HLN6529C/D/E/F/G, HLN6560C/D/E/F/G/H, and HLN6562C/D/E/F/G/H Command Board Schematic Diagram ...................7-17 HLN5558E/F/G, HLN6529C/D/E, HLN6560C/D/E/F/G/H, and HLN6562C/D/E/F/G/H Command Board Component Location Diagrams ..............7-18 HLN5558H/J, HLN6529H, HLN6560J, and HLN6562J Command Board Schematic...
Page 13 Table of Contents HLD4342B/HLD4343B VHF VCO Carrier Component Location Diagram ......7-80 HLD4342D/HLD4343D VHF VCO Carrier Component Location Diagram......7-81 UHF VCO Ranges 1, 2, 3, and 4 Hybrid Schematic ..............7-84 HLE6101A UHF VCO Range 1 Hybrid and HLE6102A Range 2 Hybrid Component Location Diagram ..........................7-85 HLE6103B UHF VCO Range 3 Hybrid and HLE6104B Range 4 Hybrid Component Location Diagram ..........................7-87...
Page 14 Keyload ..........................A-2 Appendix B Replacement Parts Ordering ..........B-1 Basic Ordering Information......................B-1 Transceiver Board and VOCON Board Ordering Information ............B-1 Motorola Online ..........................B-1 Mail Orders............................ B-1 Telephone Orders ......................... B-2 Fax Orders ............................ B-2 Parts Identification......................... B-2 Product Customer Service ......................
Page 15 List of Figures xiii List of Figures Figure 2-1. DC Voltage Routing Block Diagram..................2-9 Figure 2-2. ASTRO Spectra B+ Routing for Vocoder/Controller (VOCON) Board.........2-10 Figure 3-1. Prescaler IC Block Diagram ....................3-2 Figure 3-2. Synthesizer IC Block Diagram....................3-2 Figure 3-3. Loop Divider Waveforms .......................3-4 Figure 3-4.
Page 16 Table 7-7. J801 VOCON Board to Encryption Board ................7-3 Table 7-8. J601 RF Board to VCO Board....................7-3 Table A-1. ASTRO Digital Spectra Secure Modules ................A-1 Table A-2. ASTRO Digital Spectra Plus Secure Modules ..............A-1 October 28, 2002 6881076C25-D...
Page 17 List of Tables Related Publications ASTRO Digital Spectra and Digital Spectra Plus Model W3 User’s Guide........6881090C61 ASTRO Digital Spectra and Digital Spectra Plus Models W4, W5, W7, and W9 User’s Guide ..6881090C62 ASTRO Digital Spectra Hand-Held Control Head User’s Guide (Model W3) ......... 6881073C25 ASTRO Digital Spectra (Model W4, W5, W7, and W9) User’s Guide ..........
Page 18 List of Tables Notes October 28, 2002 6881076C25-D...
Page 19: Commercial Warranty
Product Accessories One (1) Year Motorola, at its option, will at no charge either repair the Product (with new or reconditioned parts), replace it (with a new or reconditioned Product), or refund the purchase price of the Product during the warranty period provided it is returned in accordance with the terms of this warranty. Replaced parts or boards are warranted for the balance of the original applicable warranty period.
Page 20: State Law Rights
Warranty service will be provided by Motorola through one of its authorized warranty service locations. If you first contact the company which sold you the Product, it can facilitate your obtaining warranty service. You can also call Motorola at 1-888-567-7347 US/Canada.
Page 21: Patent And Software Provisions
A. that MOTOROLA will be notified promptly in writing by such purchaser of any notice of such claim; B. that MOTOROLA will have sole control of the defense of such suit and all negotiations for its settlement or compromise; and C.
Page 22 Commercial Warranty Notes October 28, 2002 6881076C25-D...
Page 23: Model Numbering, Charts, And Specifications
Model Numbering, Charts, and Specifications Mobile Radio Model Numbering Scheme Typical Model Number: Position: 12 13 Position 1 - Type of Unit Positions 13 - 16 D = Dash-Mounted Mobile Radio SP Model Suffix M = Motorcycle Mobile Radio T = Trunk-Mounted Mobile Radio Position 12 - Unique Model Variations Positions 2 &...
Page 24: Astro Digital Spectra Motorcycle 15 Watt (Ranges 1 And 2) Model Chart
xxii Model Numbering, Charts, and Specifications ASTRO Digital Spectra Motorcycle 15 Watt (Ranges 1 and 2) Model Chart Model Number Description M04JGF9PW4AN Model W4 (136-162 MHz), Range 1, 15 Watt, 128 Channels M04JGF9PW5AN Model W5 (136-162 MHz), Range 1, 15 Watt, 128 Channels M04JGH9PW7AN Model W7 (136-162 MHz), Range 1, 15 Watt, 128 Channels M04KGF9PW4AN...
Page 25: Astro Digital Spectra Motorcycle 15 Watt (Ranges 3 And 3.5) Model Chart
Model Numbering, Charts, and Specifications xxiii ASTRO Digital Spectra Motorcycle 15 Watt (Ranges 3 and 3.5) Model Chart Model Number Description M04RGF9PW4ANSP02 Model W4 (450-482 MHz), Range 3, 15 Watt, 128 Channels M04RGF9PW5ANSP02 Model W5 (450-482 MHz), Range 3, 15 Watt, 128 Channels M04RGF9PW4ANSP01 Model W4 (453-488 MHz), Range 3.5, 15 Watt, 128 Channels M04RGF9PW5ANSP01...
Page 26: Astro Digital Spectra Vhf 10-25 Watt Model Chart
xxiv Model Numbering, Charts, and Specifications ASTRO Digital Spectra VHF 10–25 Watt Model Chart Model Number Description D04JHH9PW3AN Model W3 (136-145.9 MHz), 10-25 Watt, 255 Channels D04JHF9PW4AN Model W4 (136-162 MHz), 10-25 Watt, 128 Channels D04JHF9PW5AN Model W5 (136-162 MHz); 10-25 Watt, 128 Channels D04JHH9PW7AN Model W7 (136-162 MHz), 10-25 Watt, 255 Channels T04JHH9PW9AN...
Page 27: Astro Digital Spectra Vhf 25-50 And 50-110 Watt Model Chart
Model Numbering, Charts, and Specifications ASTRO Digital Spectra VHF 25–50 and 50–110 Watt Model Chart Model Number Description D04JKH9PW3AN Model W3 (136-145.9 MHz), 25-50 Watt, 128 Channels D04JKF9PW4AN Model W4 (136-162 MHz), 25-50 Watt, 128 Channels D04JKF9PW5AN Model W5 (136-162 MHz); 25-50 Watt, 128 Channels D04JKH9PW7AN Model W7 (136-162 MHz), 25-50 Watt, 255 Channels T04JKH9PW9AN...
Page 28 xxvi Model Numbering, Charts, and Specifications ASTRO Digital Spectra VHF 25–50 and 50–110 Watt Model Chart (cont.) Model Number Description D04JKH9PW3AN Model W3 (136-145.9 MHz), 25-50 Watt, 128 Channels D04JKF9PW4AN Model W4 (136-162 MHz), 25-50 Watt, 128 Channels D04JKF9PW5AN Model W5 (136-162 MHz); 25-50 Watt, 128 Channels D04JKH9PW7AN Model W7 (136-162 MHz), 25-50 Watt, 255 Channels T04JKH9PW9AN...
Page 29: Astro Digital Spectra Uhf 10-25 Watt Model Chart
Model Numbering, Charts, and Specifications xxvii ASTRO Digital Spectra UHF 10–25 Watt Model Chart Model Number Description D04RHH9PW3AN Model W3 (438-470 MHz), 10-25 Watt, 255 Channels D04RHF9PW4AN Model W4 (438-470 MHz), 10-25 Watt, 128 Channels D04RHF9PW5AN Model W5 (438-470 MHz), 10-25 Watt, 128 Channels D04RHH9PW7AN Model W7 (438-470 MHz), 10-25 Watt, 255 Channels T04RHH9PW9AN...
Page 30: Astro Digital Spectra Uhf 20-40 Watt Model Chart
xxviii Model Numbering, Charts, and Specifications ASTRO Digital Spectra UHF 20–40 Watt Model Chart Model Number Description D04QKH9PW3AN Model W3 (403-433 MHz), 20-40 Watt, 128 Channels D04QKF9PW4AN Model W4 (403-433 MHz), 20-40 Watt, 128 Channels D04QKF9PW5AN Model W5 (403-433 MHz), 20-40 Watt, 128 Channels D04QKH9PW7AN Model W7 (403-433 MHz), 20-40 Watt, 255 Channels T04QKH9PW9AN...
Page 31 Model Numbering, Charts, and Specifications xxix ASTRO Digital Spectra UHF 20–40 Watt Model Chart (cont.) Model Number Description D04QKH9PW3AN Model W3 (403-433 MHz), 20-40 Watt, 128 Channels D04QKF9PW4AN Model W4 (403-433 MHz), 20-40 Watt, 128 Channels D04QKF9PW5AN Model W5 (403-433 MHz), 20-40 Watt, 128 Channels D04QKH9PW7AN Model W7 (403-433 MHz), 20-40 Watt, 255 Channels T04QKH9PW9AN...
Page 32: Astro Digital Spectra Uhf 50-110 Watt Model Chart
Model Numbering, Charts, and Specifications ASTRO Digital Spectra UHF 50–110 Watt Model Chart Model Number Description T04QLF9PW4AN Model W4 (403-433 MHz), 50-110 Watt, 128 Channels T04QLF9PW5AN Model W5 (403-433 MHz), 50-110 Watt, 255 Channels T04QLH9PW7AN Model W7 (403-433 MHz), 50-110 Watt, 255 Channels T04QLH9PW9AN Model W9 (403-433 MHz), 50-110 Watt, 255 Channels T04RLF9PW4AN...
Page 33 Model Numbering, Charts, and Specifications xxxi ASTRO Digital Spectra UHF 50–110 Watt Model Chart (cont.) Model Number Description T04QLF9PW4AN Model W4 (403-433 MHz), 50-110 Watt, 128 Channels T04QLF9PW5AN Model W5 (403-433 MHz), 50-110 Watt, 255 Channels T04QLH9PW7AN Model W7 (403-433 MHz), 50-110 Watt, 255 Channels T04QLH9PW9AN Model W9 (403-433 MHz), 50-110 Watt, 255 Channels T04RLF9PW4AN...
Page 34: Astro Digital Spectra 800 Mhz Model Chart
xxxii Model Numbering, Charts, and Specifications ASTRO Digital Spectra 800 MHz Model Chart Model Number Description D04UJF9PW3AN Model W3 (800 MHz), 35 Watt, 128 Channels D04UJF9PW4AN Model W4 (800 MHz), 35 Watt, 128 Channels D04UJF9PW5AN Model W5 (800 MHz), 35 Watt, 128 Channels D04UJF9PW7AN Model W7 (800 MHz), 35 Watt, 255 Channels T04UJF9PW9AN...
Page 35: Astro Digital Spectra Plus Vhf 25-50 And 50-110 Watt Model Chart
Model Numbering, Charts, and Specifications xxxiii ASTRO Digital Spectra Plus VHF 25–50 and 50–110 Watt Model Chart Model Number Description D04KKH9SW3AN Model W3 (146-174 MHz), 25-50 Watt, 512 Channels D04KKF9SW4AN Model W4 (146-174 MHz), 25-50 Watt, 512 Channels D04KKF9SW5AN Model W5 (146-174 MHz); 25-50 Watt, 512 Channels...
Page 36 Model Numbering, Charts, and Specifications ASTRO Digital Spectra Plus VHF 25–50 and 50–110 Watt Model Chart (cont.) Model Number Description D04KKH9SW3AN Model W3 (146-174 MHz), 25-50 Watt, 512 Channels D04KKF9SW4AN Model W4 (146-174 MHz), 25-50 Watt, 512 Channels D04KKF9SW5AN Model W5 (146-174 MHz);...
Page 37: Astro Digital Spectra Plus Uhf 20-40 Watt Model Chart
Model Numbering, Charts, and Specifications xxxv ASTRO Digital Spectra Plus UHF 20–40 Watt Model Chart Model Number Description D04QKH9SW3AN Model W3 (403-433 MHz), 20-40 Watt, 512 Channels D04QKF9SW4AN Model W4 (403-433 MHz), 20-40 Watt, 512 Channels D04QKF9SW5AN Model W5 (403-433 MHz), 20-40 Watt, 512 Channels...
Page 38 Model Numbering, Charts, and Specifications ASTRO Digital Spectra Plus UHF 20–40 Watt Model Chart (cont.) Model Number Description D04QKH9SW3AN Model W3 (403-433 MHz), 20-40 Watt, 512 Channels D04QKF9SW4AN Model W4 (403-433 MHz), 20-40 Watt, 512 Channels D04QKF9SW5AN Model W5 (403-433 MHz), 20-40 Watt, 512 Channels...
Page 39: Astro Digital Spectra Plus Uhf 50-110 Watt Model Chart
Model Numbering, Charts, and Specifications xxxvii ASTRO Digital Spectra Plus UHF 50–110 Watt Model Chart Model Number Description T04QLH9SW3AN Model W3 (403-433 MHz), 50-110 Watt, 512 Channels T04QLF9SW4AN Model W4 (403-433 MHz), 50-110 Watt, 512 Channels T04QLF9SW5AN Model W5 (403-433 MHz), 50-110 Watt, 512 Channels...
Page 40 Model Numbering, Charts, and Specifications ASTRO Digital Spectra Plus UHF 50–110 Watt Model Chart (cont.) Model Number Description T04QLH9SW3AN Model W3 (403-433 MHz), 50-110 Watt, 512 Channels T04QLF9SW4AN Model W4 (403-433 MHz), 50-110 Watt, 512 Channels T04QLF9SW5AN Model W5 (403-433 MHz), 50-110 Watt, 512 Channels...
Page 41: Astro Digital Spectra Plus 800 Mhz Model Chart
Model Numbering, Charts, and Specifications xxxix ASTRO Digital Spectra Plus 800 MHz Model Chart Model Number Description M04UGF9SW4AN Model W4 (800 MHz), 15 Watt, 512 Channels M04UGF9SW5AN Model W5 (800 MHz), 15 Watt, 512 Channels M04UGH9SW7AN Model W7 (800 MHz), 15 Watt, 512 Channels...
Page 42 Model Numbering, Charts, and Specifications ASTRO Digital Spectra Plus 800 MHz Model Chart (cont.) Model Number Description M04UGF9SW4AN Model W4 (800 MHz), 15 Watt, 512 Channels M04UGF9SW5AN Model W5 (800 MHz), 15 Watt, 512 Channels M04UGH9SW7AN Model W7 (800 MHz), 15 Watt, 512 Channels...
Page 43: Vhf Radio Specifications
Model Numbering, Charts, and Specifications VHF Radio Specifications GENERAL RECEIVER TRANSMITTER FCC Designations: AZ492FT3772 Frequency Range: Frequency Range: AZ492FT3773 Range 1: 136–162 MHz Range 1: 136–162 MHz Range 2: 146–174 MHz Range 2: 146–174 MHz Temperature Range: Operating: –30°C to +60°C Channel Spacing: 12.5 kHz, 25 kHz Rated Output Power:...
Page 44: Uhf Radio Specifications
xlii Model Numbering, Charts, and Specifications UHF Radio Specifications GENERAL RECEIVER TRANSMITTER FCC Designations: AZ492FT4786 Frequency Range: Frequency Range: AZ492FT4787 Range 1: 403–433 MHz Range 1: 403–433 MHz Range 2: 438–470 MHz Range 2: 438–470 MHz Temperature Range: Range 3: 450–482 MHz Range 3: 450–482 MHz...
Page 45: 800 Mhz Radio Specifications
Model Numbering, Charts, and Specifications xliii 800 MHz Radio Specifications GENERAL RECEIVER TRANSMITTER FCC Designations: AZ492FT5759 Frequency Range: 851–869 MHz Frequency Range: AZ492FT5751 Repeater Mode: 806–824 MHz Channel Spacing: 12.5 kHz/20 kHz/25 kHz Talk-Around Mode: 851–869 MHz Temperature Range: Operating: –30°C to +60°C Input Impedance: 50 Ohm...
Page 46 xliv Model Numbering, Charts, and Specifications Notes October 28, 2002 6881076C25-D...
Page 47: Chapter 1 Introduction
Use this manual in conjunction with the ASTRO Digital Spectra and Digital Spectra Plus Mobile Radios Basic Service Manual (Motorola part number 6881076C20), which helps in troubleshooting a problem to a particular board. Conduct the basic performance checks first to verify the need to analyze the radio and help pinpoint the functional problem area.
Page 48: Notations Used In This Manual
Introduction: Notations Used in This Manual Notations Used in This Manual Throughout the text in this publication, you will notice the use of warnings, cautions, and notes. These notations are used to emphasize that safety hazards exist, and care must be taken and observed.
Page 49: Chapter 2 General Overview
Chapter 2 General Overview Introduction The ASTRO Digital Spectra 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 50: Analog Mode Of Operation
General Overview: Analog Mode of Operation Analog Mode of Operation When the radio is receiving, the signal comes from the antenna/antenna-switch on the power amplifier board to the front-end receiver assembly. The signal is then filtered, amplified, and mixed with the first local-oscillator signal generated by the voltage-controlled oscillator (VCO). The resulting intermediate frequency (IF) signal is fed to the IF circuitry on the RF board, where it is again filtered and amplified.
Page 51: Display (W9 Model)
General Overview: Control Head Assembly 2.4.3 Display (W9 Model) The control-head assembly for a W9 model has an 11-character, alphanumeric, vacuum fluorescent display. It needs three separate voltages to operate; the cathode needs 35 V to accelerate electrons to the anode; the grid needs 40 V to totally shut off current flow; the filament needs 3.8 Vac at 80mA. These voltages are obtained from the transformer on the display controller board.
Page 52: Vehicle Interface Ports
General Overview: Control Head Assembly 2.4.9 Vehicle Interface Ports The Vehicle Interface Ports (VIPs) allow the control head to activate external circuits and receive inputs from the outside world. In general, VIP outputs are used for relay control and VIP inputs accept inputs from external switches.
Page 53: Power Amplifier
General Overview: Power Amplifier Power Amplifier The power amplifier (PA) is a multi-stage, discrete-transistor RF amplifier consisting of the following: • Low-level power controlling stage • Drivers • Final amplifier • Directional coupler • Antenna switch • Harmonic filter 2.5.1 Gain Stages The first stage buffers the RF signal, filters harmonics, and acts as a variable amplifier.
Page 54: Front-End Receiver Assembly
General Overview: Front-End Receiver Assembly Front-End Receiver Assembly The receiver front-end consists of a preselector, a mixer circuit, and an injection filter. The receiver injection (1st local oscillator) comes from the VCO assembly through a coax cable. The injection filter is either fixed-tuned or tuned at the factory depending upon the bandsplit.
Page 55: Uhf And 800 Mhz Radios
General Overview: Command Board The VCO output is coupled to a transistor for amplification and for impedance buffering. The output of this stage passes through a low-pass filter where the signal is split into three paths. One path feeds back to the synthesizer prescaler; the other two provide injection for the RX and TX amplification strings.
Page 56: Radio Power
General Overview: Radio Power The support-logic IC acts as an extension of the microcontrol unit by providing logic functions such as lower address latch, reset, memory address decoding, and additional control lines for the radio. The VOCON board controls a crystal-pull circuit to adjust the crystal oscillator frequency on the microcontrol unit, so that the E-clock harmonics do not cause interference with the receive channel.
Page 57: B+ Routing For Astro Spectra Vocon Board
General Overview: Radio Power When the command board regulators are “on,” the 9.6-V output sources the command board and RF board circuits. The switched +5 V is routed to the VOCON board. See Figure 2-1. Control Command Board Battery Head Power Amp SWB+ UNSW...
Page 58: Figure 2-2. Astro Spectra B+ Routing For Vocoder/Controller (Vocon) Board
2-10 General Overview: Radio Power Transistor Q206 controls solid-state power switch Q207, providing SWB+ to the encryption module (if equipped). The "SWB+" and "UNSWB+" encryption voltages both originate from pin 38 of J501 and are fed to the encryption module via J801. Port PL3 (5-V EN) on the SLIC and Q207 are under the control of the microcontroller unit (MCU), U204.
Page 59: Chapter 3 Theory Of Operation
Chapter 3 Theory of Operation RF Board This section provides a detailed circuit description of the ASTRO RF board for VHF, UHF, and 800 MHz models. This board contains the common synthesizer circuits (synthesizer section) and dual IF receiver and demodulation circuits (receiver back-end). When reading the theory of operation, refer to your appropriate schematic and component location diagrams located in “Chapter 7.
Page 60: Figure 3-1. Prescaler Ic Block Diagram
Theory of Operation: RF Board VREF CONT PNP BASE MULTI - MODULUS BASE PRESCALER 5V OUT LATCH S.F. VIN U601 MOSAIC PRESCALER S.F. BASE 300KHz 2ND L.O. CHARGE - PUMP S.F. OUT PHASE DETECTOR S.F. CAP DATA 2ND L.O. S.F. GND CLOCK 0 DET REF IN DATA OUT...
Page 61: Synthesizer
Theory of Operation: RF Board The reference oscillator generates the 16.8 MHz signal that serves as the reference for all radio frequency accuracy. It uses a proprietary temperature compensation circuit to keep the radio within its specified frequency tolerance. The receiver back-end uses the ABACUS II IC (U301) to demodulate all the way to baseband, starting from the first IF.
Page 62: Programmable Reference Divider
Theory of Operation: RF Board The synthesizer generates a modulus control output which instructs the prescaler to divide by either P or P + 1 (that is, 255 or 256). When modulus control is low, the prescaler is dividing by P + l (256) and the A counter is running;...
Page 63: Phase Modulator
Theory of Operation: RF Board 3.1.2.4 Phase Modulator ASTRO radios use a dual-port modulation scheme. The nature of the synthesizer loop is to track out low-frequency errors. In order to enable low-frequency modulation, such as DPL, the reference signal is modulated with the same signal as the VCO. Effectively, this prevents the low-frequency error in the loop (DPL) from tracking out because the same error is on the reference signal.
Page 64: Second Vco
Theory of Operation: RF Board 3.1.2.7 Second VCO The second VCO is a grounded-gate, FET Colpitts oscillator. The resonator consists of a fixed inductor and a varactor. A potentiometer, R634, adjusts the negative voltage to the varactor. This adjustment is performed at board test to bring the phase detector output to the center of its linear region;...
Page 65: Abacus Ii Ic
Theory of Operation: RF Board 3.1.3.2 ABACUS II IC Once in the ABACUS II IC (U301), the first IF frequency is amplified and then down converted to 450 kHz, the second IF frequency. At this point, the analog signal is converted into two digital bit streams by a sigma-delta A/D converter.
Page 66: Command Board
Theory of Operation: Command Board Command Board This section of the theory of operation provides a detailed circuit description of the ASTRO Digital Spectra Command Board. When reading the Theory of Operation, refer to your appropriate schematic and component location diagrams located in “Chapter 7.
Page 67: Power-Up/-Down Sequence
Theory of Operation: Command Board 3.2.3 Power-Up/-Down Sequence Normally, switched B+ (SWB+) enters the command board from P502, pin 31. This voltage is derived from the battery A+ voltage which enters the control head through P502, pin 30. A power FET transistor, located in the control head (W5 and W7 models), provides the means of controlling the main power source via the control head’s on/off switch.
Page 68: Regulators
3-10 Theory of Operation: Command Board 3.2.4 Regulators The regulator circuits include an unswitched +5 V (UNSW5V) discrete circuit, and the regulator/ power-control IC (RPCIC) that produces switched +5 V (U500, pin 14) and 9.6 V (U500, pin 17). The UNSW+5-V source is used by the RPCIC as a reference (U500, pin 20) for its switched + 5-V source.
Page 69: Serial Communications On The External Bus
Theory of Operation: Command Board 3-11 The three inputs to the NOR gate (SW9.6-V, RPCIC EN, and RPCIC_EN delayed) must be at a logic low to enable the power-on reset (POR*) to a high logic state. During this power-up sequence, this reset is delayed approximately 170 ms after the B+ voltage is sensed.
Page 70: Synchronous Serial Bus (Mosi)
3-12 Theory of Operation: Command Board 3.2.7 Synchronous Serial Bus (MOSI) The synchronous serial bus is an internal bus used by the microcontroller for communicating with various ICs. The serial bus, called MOSI (master out/ slave in), is used to program the digital-to- analog (D/A) converter IC (U526), the serial-to-parallel shift register (U530) on the command board, and the ABACUS II IC (U301) on the RF board.
Page 71: Transmit Deviation
Theory of Operation: Command Board 3-13 3.2.10 Transmit Deviation The analog transmit deviation (MAI) enters the VOCON board through P501, pin 39, and is converted to a digital format. The digital representation is processed and pre-emphasized by the DSP processor. The pre-emphasized digital bit stream is converted back to analog by the ADSIC device.
Page 72: Regulator And Power-Control Ic
3-14 Theory of Operation: Command Board 3.2.14 Regulator and Power-Control IC The regulator and power-control IC (RPCIC), U500, contains internal circuitry for the 9.6-V regulator and the switched +5-V regulator. Refer to Section 3.2.4, "Regulators," on page 3-10 for detailed theory of operation.
Page 73: Astro Spectra Vocon Board
The controller section is the central interface between the various subsystems of the radio. It is very similar to the digital logic portion of the controllers on many existing Motorola radios. Its main task is to interpret user input, provide user feedback, and schedule events in the radio operation, which includes programming ICs, steering the activities of the DSP, and sending messages to the display through the control head.
Page 74: Figure 3-7. Vocon Board - Controller Section
3-16 Theory of Operation: ASTRO Spectra VOCON Board The SLIC (U206) performs many functions as a companion IC for the MCU. Among these are expanded input/output (I/O), memory decoding and management, and interrupt control. It also contains the universal asynchronous receiver transmitter (UART) used for the RS232 data communications.
Page 75: Vocoder Section
Theory of Operation: ASTRO Spectra VOCON Board 3-17 3.3.3 Vocoder Section Refer to Figure 3-8 on page 3-18 and your specific schematic diagram. The vocoder section of the VOCON board is made up of a digital signal processor (DSP) (U405), 24k x24 static-RAM (SRAM) (U414, U403, and U402), 256kB FLASH ROM (U404), and ABACUS II/DSP support IC (ADSIC) (U406).
Page 76: Rx Signal Path
3-18 Theory of Operation: ASTRO Spectra VOCON Board When transmitting, the microphone audio is passed from the command board to the ADSIC, which incorporates an analog-to-digital (A/D) converter to translate the analog waveform to a series of data. The data is available to the DSP through the ADSIC parallel registers. In the converse way, the DSP writes speaker data samples to a D/A in the ADSIC, which provides an analog speaker audio signal to the audio power amplifier on the command board.
Page 77: Figure 3-9. Dsp Rssi Port - Rx Mode
Theory of Operation: ASTRO Spectra VOCON Board 3-19 8KHz IRQB IRQB Command Board Interface D8-D23 J501-40 ADSIC DSP56001 A0-A2,A13-A15,RD*,WR* U406 U405 ABACUS II 2.4 MHz Receive Data Clock Interface SCKR 20 KHz RX Data Interrupt J501-6 48KHz TX Data Interrupt Data In J501-2 1.2 MHz Tx Data Serial Clock...
Page 78 3-20 Theory of Operation: ASTRO Spectra VOCON Board The DSP accesses this data through its SSI port. This is a 6 port synchronous serial bus. It is used by the DSP for both transmit and receive data transferal, but only the receive functions will be discussed here.
Page 79: Tx Signal Path
Theory of Operation: ASTRO Spectra VOCON Board 3-21 3.3.5 TX Signal Path The transmit signal path follows some of the same design structure as the receive signal path described in Section 3.3.4, "RX Signal Path," on page 3-18 (refer to Figure 3-10).
Page 80: Controller Bootstrap And Asynchronous Buses
Figure 3-11 on page 3-23) is an asynchronous serial communication bus, utilizing a Motorola proprietary protocol. It provides a means for the MCU to communicate with other hardware devices. In the ASTRO Digital Spectra radio, it communicates with hardware accessories connected to the accessory connector and the remote interface board.
Page 81: Figure 3-11. Host Sb9600 And Rs232 Ports
Theory of Operation: ASTRO Spectra VOCON Board 3-23 The same UART internal to the MCU is used in the controller bootstrap mode of operation. This mode is used primarily in downloading new program code to the FLASH ROMs on the VOCON board.
Page 82: Vocoder Bootstrap
3-24 Theory of Operation: ASTRO Spectra VOCON Board 3.3.7 Vocoder Bootstrap The DSP has two modes of bootstrap: from program code stored in the FLASH ROM U404, or retrieving code from the host port. During normal modes of operation, the DSP executes program code stored in the FLASH ROM, U404.
Page 83: Figure 3-12. Controller Memory Mapping
Theory of Operation: ASTRO Spectra VOCON Board 3-25 MAP 2 $0000 NON-MUX 32K COMMON External $0000 $1000 $0E00 $2000 Int EE $1000 F1 REGS $1060 $3000 INT RAM $4000 $1400 SLIC REG $5000 $1500 HOST PORT $6000 $1600 Ext RAM $1800 $7000 External...
Page 84: Vocoder Memory Map
3-26 Theory of Operation: ASTRO Spectra VOCON Board The MCU executes program code stored in the FLASH ROMs. On a power-up reset, it fetches a vector from $FFFE, $FFFF in the ROMs and begins to execute code stored at this location. The external SRAM along with the internal 1Kx8 SRAM is used for temporary variable storage and stack space.
Page 85: Figure 3-13. Vocoder Memory Mapping
Theory of Operation: ASTRO Spectra VOCON Board 3-27 $FFFF ADSIC Registers ADS Vectors $E000 $DFFF External ROM External ROM 16KB Physical 16KB Physical Banks Banks $00000-1FFFF $20000-3FFFF $A000 $9FFF Not Used $8000 $7FFF External External External U401 U402 U403 $2000 $1FFF $1000 $0FFF...
Page 86: Mcu System Clock
3-28 Theory of Operation: ASTRO Spectra VOCON Board The DSP program code is stored in the FLASH ROM, U404. During normal modes of operation, the DSP moves the appropriate program code into the three SRAMs (U401, U402, and U403) and internal RAM for execution.
Page 87: Vocon Board Signals
Theory of Operation: ASTRO Spectra VOCON Board 3-29 During this process, the MCU does power diagnostics. These diagnostics include verifying the MCU system RAM, and verifying the data stored in the internal EEPROM, external EEPROM, and FLASH ROMs. The MCU queries the DSP for proper status and the results of DSP self tests. The DSP self tests include testing the system RAM, verifying the program code in ROM U404, and returning the ADSIC configuration register checksum.
Page 88: Table 3-3. Vocon Board Address Bus (Ha) Pinouts
3-30 Theory of Operation: ASTRO Spectra VOCON Board Table 3-3. VOCON Board Address Bus (HA) Pinouts U201 U202 U204 U205 U206 U210 U405 HA10 HA11 HA12 HA13 HA14 H1-In H8-In H4-Out HA15 H2-In H7-In K3-Out HA16 HA17 Table 3-4. VOCON Board Data Bus (D) Pinouts U402 U403 U404...
Page 89: Table 3-5. Vocon Board Data Bus (Hd) Pinouts
Theory of Operation: ASTRO Spectra VOCON Board 3-31 Table 3-4. VOCON Board Data Bus (D) Pinouts (Continued) U402 U403 U404 U405 U406 U414 Table 3-5. VOCON Board Data Bus (HD) Pinouts U201 U202 U204 U205 U206 U210 U405 6881076C25-D October 28, 2002...
Page 90: Table 3-6. U204 (Mcu)
3-32 Theory of Operation: ASTRO Spectra VOCON Board Table 3-6. U204 (MCU) U204 Description To/From Pin # R260 PE1 B SENSE/LBAT/PWR DWN VR214 PE3 EMERG J901-4 PE6 SPKR COMMON R263 PE7 EXT SPKR R261 4XECLK (7.3726 MHz) U206-A3 PD0 BOOT DATA IN (RXD) J501-17 U206 PD1 BOOT DATA OUT (TXD) J501-18 U208...
Page 91: Table 3-7. U206 (Slic)
Theory of Operation: ASTRO Spectra VOCON Board 3-33 Table 3-6. U204 (MCU) (Continued) U204 Description To/From Pin # PG4 ADSIC RST* U406-A8 PG3 ADSIC SEL* U406-B8 PG2 DSP RST* U405-G9 PG1 ROSC/PSC CE* J501-12 PG0 SYN SEL* J501-11 R/W* U405-D9 U206-B3 ECLK (1.8432 MHz) U206-A4...
Page 92 3-34 Theory of Operation: ASTRO Spectra VOCON Board Table 3-7. U206 (SLIC) (Continued) U206 Description To/From Pin # R268 PJ5 OPT SEL2 (KEYLOAD*) R237 PJ6 VIP IN1 J501-24 PJ7 EMC EN* J801-10 POR* U409-2 HC11RST*/RESET* U204-E5 U201-31 U201-25 U202-22 U205-32 U210-32 R/W* U405-D9...
Page 93: Vocon U405 (Dsp)
Theory of Operation: ASTRO Spectra VOCON Board 3-35 Table 3-7. U206 (SLIC) (Continued) U206 Description To/From Pin # MICEN J501-45 B+ CNTL U409-2 Q206B VIP OUT1 J501-22 CS3B EMC MAKEUP* J801-12 CS2B RAM SEL* U211-2 CS1B HEN* U405-E8 DISP EN*/LATCH SEL* J601-4 RED LED GRN LED...
Page 94: Table 3-9. Vocon U406 (Adsic)
3-36 Theory of Operation: ASTRO Spectra VOCON Board Table 3-8. VOCON U405 (DSP) (Continued) U405 Description To/From Pin # U406-J4 U406-K4 SCLK U204-G3 U406-C9 TXD/EMC RXD J801-3 RXD/EMC TXD J801-4 RESET/DSP RST* U204-H8 HACK* R409 HREQ* U204-H3 HEN* U206-J7 HR/W* U204-B6 Table 3-9.
Page 95 Theory of Operation: ASTRO Spectra VOCON Board 3-37 Table 3-9. VOCON U406 (ADSIC) (Continued) U406 Description To/From Pin # SSW/EPS* U404-30 SCLK/SPI SCK U204-G5 J501-8 J801-9 SPO/MOSI J501-9 J801-8 U501-39 U501-40 VRO REFMOD J501-48 MODIN J501-49 RXD SRO 2.4 MHz U405-C5 RFS SC1 U405-B5...
Page 96: Astro Spectra Plus Vocon Board
It is very similar to the digital logic portion of the controllers on many existing Motorola radios. Its main task is to interpret user input, provide user feedback, and schedule events in the radio operation, which includes programming ICs (Integrated Circuits), steering the activities of the DSP (Digital Signal Processor), and sending messages to the display through the control head.
Page 97: Astro Spectra Plus Vocoder Section
Theory of Operation: ASTRO Spectra Plus VOCON Board 3-39 In addition to the SPI bus, the controller also maintains two asynchronous serial busses; the SB9600 bus and an RS232 serial bus. The SB9600 bus is for interfacing the controller section to different hardware option boards, some of which may be external to the radio.
Page 98: Figure 3-15. Astro Spectra Plus Vocon Board - Vocoder Section
3-40 Theory of Operation: ASTRO Spectra Plus VOCON Board When transmitting, the microphone audio is passed from the command board to the MC145483 CODEC (U402), which incorporates an analog-to-digital (A/D) converter to translate the analog waveform to a data stream. The data is made available to the DSP through the Serial Audio Port (SAP) of the Patriot IC.
Page 99: Astro Spectra Plus Rx Signal Path
Theory of Operation: ASTRO Spectra Plus VOCON Board 3-41 3.4.4 ASTRO Spectra Plus RX Signal Path The vocoder processes all received signals digitally. This requires a unique back end from a standard analog radio. This unique functionality is provided by the ABACUS IC with the KRSIC (U200) acting as the interface to the DSP.
Page 100: Astro Spectra Plus Tx Signal Path
3-42 Theory of Operation: ASTRO Spectra Plus VOCON Board The DSP accesses this data through its SSI port. The SSI port is used by the DSP for both transmit and receive data transferal, but only the receive functions will be discussed in this section. The KRSIC transfers the data to the DSP on the SRDB line at a rate of 1.2 MHz.
Page 101: Astro Spectra Plus Controller Bootstrap And Asynchronous Busses
Figure 3-18 on page 3-44) is an asynchronous serial communication bus, utilizing a Motorola proprietary protocol. It provides a means for the MCU to communicate with other hardware devices. In the ASTRO Digital Spectra Plus radio, it communicates with hardware accessories connected to the accessory connector and the remote interface board.
Page 102: Astro Spectra Plus Serial Peripheral Interface Bus
Theory of Operation: ASTRO Spectra Plus VOCON Board The ASTRO Digital Spectra Plus radio has an additional asynchronous serial bus, which utilizes the RS232 bus protocol. This bus utilizes the secondary UART in the Patriot IC (U300). It consists of TX / RS232 (J501-43), RX / RS232 (J501-50), CTS / RS232 (J501-5), and RTS / RS232 (J501-42).
Page 103: Astro Spectra Plus Voltage Regulators
Theory of Operation: ASTRO Spectra Plus VOCON Board 3-45 3.4.9 ASTRO Spectra Plus Voltage Regulators The ASTRO Spectra Plus VOCON board contains two voltage regulators, a 3-V regulator (U411) and a 1.8-V regulator (U410). SW+5-V, which is routed to the ASTRO Spectra Plus VOCON board from the command board, drives the two regulators.
Page 104: Astro Spectra Plus Radio Power-Up/Power-Down Sequence
3-46 Theory of Operation: ASTRO Spectra Plus VOCON Board 3.4.10 ASTRO Spectra Plus Radio Power-Up/Power-Down Sequence The radio power-up sequence begins when the user actuates the control head’s on/off switch. The control head then produces the switched B+ (SWB+) output voltage which is routed to the command board.
Page 105: Voltage Control Oscillator
Theory of Operation: Voltage Control Oscillator 3-47 Voltage Control Oscillator This section of the theory of operation provides a detailed circuit description of voltage control oscillator (VCO). When reading the Theory of Operation, refer to your appropriate schematic and component location diagrams located in “Chapter 7.
Page 106: Synthesizer Feedback
3-48 Theory of Operation: Voltage Control Oscillator The VCO output is coupled through C672 to Q645 to amplify the signal and provide load isolation for the VCO. The collector voltage of Q645 is normally about 5 Vdc. 3.5.1.4 Synthesizer Feedback The synthesizer locks the VCO on frequency by the VCO feedback to the prescaler IC on the RF board.
Page 107: Super Filter 8.6 V
Theory of Operation: Voltage Control Oscillator 3-49 3.5.2.2 Super Filter 8.6 V Super-filtered 8.6 V enters the carrier board at J601-12, through an R-C filter, then on to the drain of Q9610 and the collector of Q9635. 3.5.2.3 VCO The oscillator consists of Q9610, the main transmission line (T-line), varactor bank (CR9616-9617, C9616-9617, L9616) and feedback capacitors (C9611-9613).
Page 108: Doubler
3-50 Theory of Operation: Voltage Control Oscillator 3.5.2.9 Doubler The first buffer output is coupled to the input of the doubler by C5663. Q5660 doubles the drive frequency and increases power by approximately 3 dB as a result of the high and low impedances presented to its collector at the doubled frequency and drive frequency, respectively.
Page 109: Receive Mode-Aux 1* And Aux 2* High
Theory of Operation: Voltage Control Oscillator 3-51 The positive steering line connects to the cathodes of the four varactors and the negative steering line connects to the anodes. The negative line should be -4.0 ±0.3 V and the positive line can go as high as 9 V, allowing a difference of 15 to 16 V between the two.
Page 110: Second Buffer
3-52 Theory of Operation: Voltage Control Oscillator Doubler-biasing differs between receive mode and transmit mode. For receive, R9677, R9678, and R9676 (in parallel to dissipate power) plus R9679 and R9680 bias the base of Q9675 to 0.7-V potential, if NO input RF power is applied to the base. For transmit mode, keyed 9.4 V is fed through CR9694 and another parallel resistor network R9674 and R9675.
Page 111: Receiver Front-End
Theory of Operation: Receiver Front-End 3-53 Receiver Front-End This section of the theory of operation provides a detailed circuit description of receiver front-end (RXFE). When reading the Theory of Operation, refer to your appropriate schematic and component location diagrams located in “Chapter 7.
Page 112: Theory Of Operation
3-54 Theory of Operation: Receiver Front-End 3.6.2.2 Theory of Operation The factory-tuned ceramic preselector filter accommodates RF input frequencies ranging from 438 to 470 MHz (Range 2), 450 to 482 MHz (Range 3), or 482 to 512 MHz (Range 4). The injection filter is tuned to pass frequencies from 549 to 580 MHz for Range 2, 559 to 592 MHz for Range 3, or 592 to 622 MHz for Range 4.
Page 113: Power Amplifiers
Theory of Operation: Power Amplifiers 3-55 Power Amplifiers This section of the theory of operation provides a detailed circuit description of the power amolifiers. When reading the Theory of Operation, refer to your appropriate schematic and component location diagrams located in “Chapter 7.
Page 114: Antenna Switch And Harmonic Filter
3-56 Theory of Operation: Power Amplifiers The final stage output network serves the dual purpose of impedance matching and power combining of the two final devices. R3872 and R3873 help balance the load impedances presented to the collectors of the final devices. Filtered A+ is routed to the final amplifier devices via the current sense resistor R3841, the ferrite bead L3881, and the coil L3880.
Page 115: Power Control Circuitry
Theory of Operation: Power Amplifiers 3-57 3.7.1.1.3 Power Control Circuitry Command Board Circuitry Inside U500, the Regulator Power Control IC (see Figure 3-20) is an operational amplifier that has four inverting inputs, and one non-inverting input (at pin 44) which is the reference input for the entire power control loop of the power amplifier.
Page 116 3-58 Theory of Operation: Power Amplifiers Control Voltage Limiter R3807 and R3808 form a voltage divider that connects to control voltage drive. The output of this voltage divider is connected to the control-voltage-limit input (pin 4) of the RPCIC. If the voltage at this input reaches 3.2 V, then the control voltage will be clamped to a maximum value.
Page 117: 25/10-Watt Power Amplifier
Theory of Operation: Power Amplifiers 3-59 Temperature Sensing The temperature-sensing circuit of the PA works with the RPCIC to protect the PA devices from excessively high temperatures. On the PA board, this circuit (formed by resistors R3916, R3841, and thermistor RT3842), provides a temperature dependent voltage to the RPCIC via J1 pin 6. As the PA temperature increases, the resistance of RT3842 decreases, causing the voltage at pin 6 to increase.
Page 118: Antenna Switch And Harmonic Filter
3-60 Theory of Operation: Power Amplifiers Final Stage The final device is a 3- to 33-Watt device and is driven by the driver through a low-pass matching circuit that consists of C3815, C3816, C3817, L3811, C3819, C3821, C3822, C3823 and associated transmission lines.
Page 119: Figure 3-21. Regulator/Power Control Ic Block Diagram
Theory of Operation: Power Amplifiers 3-61 The power control loop is controlled by the microprocessor U204 on the VOCON board. Through the SLIC IC U206, the microprocessor enables the RPCIC by pulling TX PA ENABLE (U500 pin 33) low while the radio synthesizer is locked (U500 pin 35). U520 writes data to a digital-to-analog converter, U502, to change and control the power-set voltage from pin 10 of U502 to pin 6 of U500.
Page 120 3-62 Theory of Operation: Power Amplifiers The collector currents of the 25/10-Watt amplifier is monitored by sensing the voltage across R3875. CURRENT SENSE + connects to one end of R3875; CURRENT SENSE - connects to the other end. These lines connect to the command board on U500, Pins 37 and 38, respectively. If the TX CURRENT LIMIT is set for 1.5 V, then the voltage difference between U500, Pins 37 and 38 must be 0.
Page 121: 50-Watt Power Amplifiers
Theory of Operation: Power Amplifiers 3-63 3.7.1.3 50-Watt Power Amplifiers 3.7.1.3.1 Transmitter The 50-Watt ASTRO Spectra power amplifiers (PA’s) are discussed in the following text. A block diagram of the circuit is shown in Figure 3-22. CONTROLLED FINAL DIRECTIONAL TX INJECTION E3851 TX BUFFER PREDRIVER...
Page 122: Antenna Switch And Harmonic Filter
3-64 Theory of Operation: Power Amplifiers Final Stage The final device is a 12- to 75-Watt device and is driven by the driver through a low pass matching circuit that consists of C3850 through C3854 and associated transmission lines. Base network, L3852, L3853, and R3851, provide the zero-DC bias required by the final device’s Class C operation.
Page 123: Power Control Circuitry
Theory of Operation: Power Amplifiers 3-65 3.7.1.3.3 Power Control Circuitry Command Board Circuitry Inside U500, the Regulator Power Control IC (Figure 3-23), is an operational amplifier that has four inverting inputs, and non-inverting input at pin 44 which is the reference input for the entire power control loop of the power amplifier.
Page 124 3-66 Theory of Operation: Power Amplifiers Control Voltage Limiter R3807 and R3808 form a voltage divider that connects to control voltage drive. The output of this voltage divider is connected to the control-voltage-limit input, pin 4 of the RPCIC. If the voltage at this input reaches 3.2 V, then the control voltage will be clamped to a maximum value.
Page 125 Theory of Operation: Power Amplifiers 3-67 Temperature Sensing The temperature-sensing circuit of the PA works with the RPCIC to protect the PA devices from exclusively high temperatures. On the PA board, this circuit, formed by resistors R3878 thru R3880 and thermistor RT3877, provides a temperature-dependent voltage to the RPCIC via P0853, pin 7. As the PA temperature increases, the resistance of RT3875 decreases, causing the voltage at pin 7 to increase.
Page 126: Uhf Band Power Amplifiers
3-68 Theory of Operation: Power Amplifiers 3.7.2 UHF Band Power Amplifiers 3.7.2.1 High-Power Amplifier 3.7.2.1.1 Transmitter The high-power Spectra amplifier is discussed in the following text. A block diagram of the circuit is shown in Figure 3-24. FINAL AMPLIFIER Q5875 25C29 ANTENNA HARMONIC...
Page 127: Antenna Switch And Harmonic Filter
Theory of Operation: Power Amplifiers 3-69 Final Stage The final amplifier stage is the parallel combination of two 25-Watt input to 75-Watt output RF transistors. The matching network from the collector of the driver device Q5851 to the bases of the final devices Q5875 and Q5876 utilizes transmission lines as part of a combination matching network and power splitter.
Page 128: Figure 3-25. Rpcic Block Diagram
3-70 Theory of Operation: Power Amplifiers The power control loop is controlled by the microprocessor U204 on the VOCON board. Through the SLIC IC U206, the microprocessor enables the RPCIC by pulling TX PA ENABLE (U500 pin 33) low while the radio synthesizer is locked (U500 pin 35). U520 writes data to a digital-to-analog converter, U502, to change and control the power-set voltage from pin 10 of U502 to pin 6 of U500.
Page 129 Theory of Operation: Power Amplifiers 3-71 The collector current of the high-power amplifier is monitored by sensing the voltage across R5875. CURRENT SENSE + connects to one end of R5875; CURRENT SENSE - connects to the other end. These lines connect to the command board on U500 pins 37 and 38, respectively. If the TX CURRENT LIMIT is set for 1.5 V, then the voltage difference between U500 pins 37 and 38 must be 0.1 V before the current through R5875 is reduced.
Page 130: 40-Watt Power Amplifier
3-72 Theory of Operation: Power Amplifiers 3.7.2.2 40-Watt Power Amplifier 3.7.2.2.1 Transmitter The 40-Watt ASTRO Spectra power amplifier is discussed in the following text. Transmit Low Level Amplifier (LLA) NOTE: The minimum input drive level to the PA into P5850 is 30 mW. Refer to the synthesizer section if input drive is less than 30 mW.
Page 131: Antenna Switch And Harmonic Filter
Theory of Operation: Power Amplifiers 3-73 3.7.2.2.2 Antenna Switch and Harmonic Filter Antenna Switch The antenna switch’s impedance inverter circuit, made up of C5923 and L5921, takes the place of a quarter-wave microstrip line. During transmission, Keyed 9.4 V forward-biases CR5921, producing low impedance on CR5921’s anode and high impedance on the C5923/L5921 node.
Page 132: Power Control Circuitry
3-74 Theory of Operation: Power Amplifiers 3.7.2.2.3 Power Control Circuitry Command Board Circuitry Inside U500, the Regulator Power Control IC (Figure 3-26), is an operational amplifier that has four inverting inputs, and one non-inverting input (at pin 44) which is the reference input for the entire power control loop of the power amplifier.
Page 133 Theory of Operation: Power Amplifiers 3-75 Control Voltage Limiter R5807 and R5808 form a voltage divider that connects to control voltage drive. The output of this voltage divider is connected to the control-voltage-limit input ( pin 4) of the RPCIC. If the voltage at this input reaches 3.2 V, then the control voltage will be clamped to a maximum value.
Page 134 3-76 Theory of Operation: Power Amplifiers Temperature Sensing The temperature-sensing circuit of the PA works with the RPCIC to protect the PA devices from excessively high temperatures. On the PA board, this circuit, formed by resistors R5878, R5876, R5877, and thermistor RT5875, provides a temperature-dependent voltage to the RPCIC via P0853, pin 7.
Page 135: 800 Mhz Band Power Amplifiers
Theory of Operation: Power Amplifiers 3-77 3.7.3 800 MHz Band Power Amplifiers 3.7.3.1 15- and 35-Watt Amplifiers 3.7.3.1.1 Transmitter The 15-Watt and 35-Watt ASTRO Spectra power amplifiers are discussed in the following text. Transmit Buffer The PA receives 18 to 23 dBm (60 to 200 mW) at the transmit injection (TX INJ) coax. The first stage, TX BUFFER, uses adaptive biasing which varies the base voltage inversely proportional to the input drive level.
Page 136: Antenna Switch And Harmonic Filter
3-78 Theory of Operation: Power Amplifiers Final Stage (35-Watt Only) On the 15-Watt radio, the transmit RF signal from U9850, pin 5, is applied to the 50-ohm microstrip directional coupler. On the 35-Watt radio, the transmit RF signal is applied to the emitter of the final power amplifier Q9880 through the coupling capacitor C9856, the 50-ohm quarter-wave matching transmission line, and the matching capacitors C9875 and C9876.
Page 137: Power Control Circuitry
Theory of Operation: Power Amplifiers 3-79 NOTE: When removing any of the discrete coils, take care to avoid leaching the plate capacitor metallization. Removal of the entire hybrid is best accomplished by heating hybrid/PC board assembly with a heat gun or heat blower until solder joint reflows. 3.7.3.1.3 Power Control Circuitry Command Board Circuitry Inside U500, the Regulator Power Control IC...
Page 138 3-80 Theory of Operation: Power Amplifiers Power Module Control Voltage Limiter R9562 and R9563 connect in series to the emitter of Q9500. The ratio of R9563 and R9562 feed a portion of the control voltage (U9850, Pins 2 and 3) to U500, pin 4. When pin 4 exceeds 3.2 V, the output of the control op-amp (U500, pin 42) is reduced.
Page 139: Temperature Sensing
Theory of Operation: Power Amplifiers 3-81 3.7.3.1.4 Temperature Sensing When the radio is keyed, K9.4-V is applied to pin 5 of the PA connector and on one side of thermistor RT9560. As the temperature increases, the resistance of RT9560 decreases, creating more voltage across R9561.
Page 140 3-82 Theory of Operation: Power Amplifiers Notes October 28, 2002 6881076C25-D...
Page 141: Chapter 4 Troubleshooting Procedures
5. Use a static-safeguarded workstation, which can be accomplished through the use of an anti- static kit (Motorola part number 01-80386A82). This kit includes a wrist strap, two ground cords, a static-control table mat and a static-control floor mat.
Page 142: Voltage Measurement And Signal Tracing
Troubleshooting Procedures: ASTRO Spectra Procedures 4.1.2 Voltage Measurement and Signal Tracing In most situations, the problem circuit may be identified using a dc voltmeter, RF millivoltmeter, and oscilloscope (preferably with 100 MHz bandwidth or more). The “Recommended Test Equipment, Service Aids, and Tools” section in the ASTRO Digital Spectra and Digital Spectra Plus Mobile Radios Basic Service Manual (6881076C20) outlines the recommended tools and service aids which would be useful.
Page 143: Power-Up Sequence
Troubleshooting Procedures: ASTRO Spectra Procedures Table 4-1. Power-Up Self-Check Error Codes (Continued) Error Description Troubleshooting Chart Code (p. 5-10) 02/81 DSP ROM checksum failure Chart C.12 (p. 5-12) 02/82 DSP RAM 1 failure Chart C.15 (p. 5-11) 02/84 DSP RAM 2 failure Chart C.14 (p.
Page 144 Troubleshooting Procedures: ASTRO Spectra Procedures - Set the EMC wake-up line high. 7. Begin power-up self-tests. 8. Begin RAM tests: - External RAM ($1800-3FFF). - Internal RAM ($1060-$1300). - External RAM ($0000-$0DFF). - Display 01/88 if failure. The radio will get stuck here if the internal RAM is defective. The radio uses the internal RAM for stack.
Page 145: Rf Board Troubleshooting
Troubleshooting Procedures: ASTRO Spectra Procedures 12. Power-up the EMC (if it is enabled in the codeplug). 13. Turn off the green LED. 14. Start up operating system. 15. Display for one second: - “SELF TEST” for the W3, model. - “SELF CHK” for the W4, W5, and W7 models. - “SELF CHECK”...
Page 146: Incorrect Values At U602, Pin 19
Troubleshooting Procedures: ASTRO Spectra Procedures 5. Check the positive steering line, J601, pin 1 or 2 for positive voltage between 1.0 and 8.0 V. If not correct, go to “Incorrect Voltage at Positive Steering Line”; otherwise, continue with the following checks. NOTE: It is common for both steps 3 and 5 to be incorrect in an “out-of-lock”...
Page 147: Incorrect Values At U602 Pin 25 (Modulus Control)
Troubleshooting Procedures: ASTRO Spectra Procedures 4.1.4.1.2 Incorrect Values at U602 Pin 25 (MODULUS CONTROL) If the frequency is not 6.25 kHz (or 5.0 kHz for VHF), verify the proper VCO pin-shift logic. See VCO block diagram (Figure 4-1 on page 4-14) for pin-shift logic.
Page 148: Second Vco Checks
Troubleshooting Procedures: ASTRO Spectra Procedures At 450 MHz, there are 72,000 counts of 2.22 nanoseconds each per reference period. When modulus control (MCT) is high, the VCO output is prescaled by 255 (see the diagram below). The output frequency of the prescaler is 1.765 MHz which corresponds to a period, per-cycle, of 567 nanoseconds.
Page 149: Standard Bias Table
Troubleshooting Procedures: ASTRO Spectra Procedures 4.1.5 Standard Bias Table Table 4-4, below, outlines some standard supply voltages and system clocks which should be present under normal operation. These should be checked as a first step to any troubleshooting procedure. Table 4-4. Standard Operating Bias Signal Name Nominal Value Tolerance...
Page 150: Astro Spectra Plus Procedures
Troubleshooting Procedures: ASTRO Spectra Plus Procedures ASTRO Spectra Plus Procedures This section will aid you in troubleshooting a malfunctioning ASTRO Digital Spectra Plus radio. It is intended to be detailed enough to localize the malfunctioning circuit and isolate the defective component.
Page 151: Astro Spectra Plus Power-Up Self-Check Diagnostics And Repair
Troubleshooting Procedures: ASTRO Spectra Plus Procedures 4-11 Table 4-5. ASTRO Spectra Plus Power-Up Self-Check Error Codes (Continued) Error Code Description Corrective Action 09/10 Secure Hardware Failure Turn radio off, then on 09/90 Secure Hardware Fatal Error Turn radio off, then on NOTE: In cases of multiple errors, the codes are logically OR’d and the results displayed.
Page 152: Astro Spectra Plus Standard Bias Table
4-12 Troubleshooting Procedures: ASTRO Spectra Plus Procedures 4.2.3 ASTRO Spectra Plus Standard Bias Table Table 4-6 outlines some standard supply voltages and system clocks which should be present under normal operation. These should be checked as a first step to any troubleshooting procedure. Table 4-6.
Page 153: Vco Procedures
Troubleshooting Procedures: VCO Procedures 4-13 VCO Procedures This section provides band-specific troubleshooting procedures for the VCO. 4.3.1 VHF Band Use these instructions along with the Theory of Operation, the block diagram, and the schematic to help isolate failures: first, to the individual circuits, and finally, to the failing piece part. 4.3.1.1 VCO Hybrid Assembly The VCO hybrid substrate is glued to the carrier board.
Page 154: Figure 4-1. Vco Block Diagram-Vhf Band
4-14 Troubleshooting Procedures: VCO Procedures AUX 2 SF 8.6 AUX 1 J601-9 J601-12 J601-11 J601-2 PIN DIODE BIAS BIAS DRIVERS RX INJECTION TO RECEIVER FRONT J601-3 END > + 19dBm PASS Q3645 Q3675 J601-4 J3642 FILTER VCO SUBSTRATE J601-10 K9.4 J601-5 J601-1 SYNTHESIZER...
Page 155: No Or Low Output Power (Tx Or Rx Injection)
Troubleshooting Procedures: VCO Procedures 4-15 Table 4-7. VCO Frequency Mode AUX 1 AUX 2 Radio Freq (MHz) VCO Freq (MHz) Port Freq (MHz) Port VHF RANGE 1 HIGH HIGH 136.00 - 158.35 245.65 - 268.00 245.65 - 268.00 (RX) HIGH (RX) 158.35 - 162.00 268.00 - 271.65...
Page 156: Out-Of-Lock Condition
4-16 Troubleshooting Procedures: VCO Procedures 4.3.2.2 Out-of-Lock Condition The probable cause of an out-of-lock condition is a failure in the synthesizer circuit. (See Section 4.1.4.2 on page 4-7.) If the voltages on the AUX 1*, AUX 2*, or -8V lines at P0601 do not conform to the values shown in Figure 4-2 on page 4-17, check the pin shift circuitry on the carrier...
Page 157: No Or Low Modulation
Troubleshooting Procedures: VCO Procedures 4-17 4.3.2.4 No or Low Modulation Under standard test conditions with a 1 kHz tone injected and 4.5 kHz deviation, there should be 700 mV (RMS) ±20% present on P0601-10. If this level is not present, troubleshoot the modulation circuit on the carrier board and then troubleshoot the audio circuitry.
Page 158: 800 Mhz Band
4-18 Troubleshooting Procedures: VCO Procedures 4.3.3 800 MHz Band Use these instructions along with the Theory of Operation, the block diagram, and the schematic to help isolate failures, first, to the individual circuits, and finally to the failing piece part. 4.3.3.1 VCO Hybrid Assembly The VCO hybrid substrate is glued to the carrier board.
Page 159: No Or Low Output Power (Tx Or Rx Injection)
Troubleshooting Procedures: VCO Procedures 4-19 4.3.3.3 No or Low Output Power (TX or RX Injection) Use the test cables listed in the “Service Aids” in the ASTRO Digital Spectra and Digital Spectra Plus Mobile Radios Basic Service Manual (6881076C20). Measure the power at the synthesizer feedback port-if it is not within the range specified in the block diagram, troubleshoot the first buffer.
Page 160: Receiver Front-End (Rxfe)
4-20 Troubleshooting Procedures: Receiver Front-End (RXFE) Receiver Front-End (RXFE) This section provides band-specific troubleshooting procedures for the receiver front-end. 4.4.1 VHF Band This information will help you troubleshoot the Spectra radio. Use this information, along with the Theory of Operation, to diagnose and isolate the cause of failures. The principle tools needed to troubleshoot a circuit to the component level are the schematic and the Theory of Operation.
Page 161: Power Amplifier Procedures
ASTRO Digital Spectra and Digital Spectra Plus Mobile Radios Basic Service Manual (6881076C20). Due to high operating frequencies, you must use specified Motorola parts when component replacement is necessary. Substitute components may not work. It is also critical that you use great care when replacing parts.
Page 162: Figure 4-4. Connector Pin-Out-High-Power Amplifier
4-22 Troubleshooting Procedures: Power Amplifier Procedures Begin troubleshooting by connecting an RF power meter and appropriate power load to the antenna connector. Connect the control cable and the power cable. Make sure the ignition sense lead is also connected to the positive lead of the power supply. Note that a regulated DC power supply capable of at least 30 A.
Page 163: Table 4-8. Power Control Dc Voltage Chart
Troubleshooting Procedures: Power Amplifier Procedures 4-23 If it is verified that both power set and current limit are not related to the power problem, then the synthesizer output must be checked. A milliwatt meter connected to the TX injection cable should indicate at least 10 mW of injection power during key-up.
Page 164 4-24 Troubleshooting Procedures: Power Amplifier Procedures Table 4-8. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS Thermister Buffer in 5-V Sense Input (follows pin 20 ±0.1 V) 5-V Current Limit (limits at 5.7 V) 5-V Series Pass Drive (6.4 at max current) 9.6-V Sense Input 5-V Reg.
Page 165: Pa Functional Testing
Troubleshooting Procedures: Power Amplifier Procedures 4-25 Table 4-8. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS Ground Control AMP Output (Approx 1/2-V Control) Loop Integrator Capacitor Control AMP Reference Q0500E 13.0 13.0 A+ - CR0500 Drop Q0501C 12.3 12.3...
Page 166: Table 4-9. Lla And 2Nd Stage Typical Voltages
4-26 Troubleshooting Procedures: Power Amplifier Procedures Testing Low-Level Amplifier (LLA) Circuitry Proper operation of the LLA can be checked by monitoring the voltage across resistor R3804. The voltage should measure in the range of 0.4 V to 1.0 V, depending on the value of control voltage. A 0.4-V reading corresponds to a low control voltage (4 to 5 V) and a 1.0-V reading corresponds to a high control voltage (up to control voltage limit).
Page 167 Troubleshooting Procedures: Power Amplifier Procedures 4-27 Troubleshooting the Driver Stage (Q3805) • Make sure A+ is at the collector. • Check for shorts and/or opens in the matching circuitry. Also look for faulty components (cracked parts or parts not properly soldered). •...
Page 168: Power Control And Protection Circuitry
4-28 Troubleshooting Procedures: Power Amplifier Procedures Additional antenna switch tests are: • Check CR3901, CR3902, and CR3903 using the diode check function of a multimeter. Note that CR3903 is on the bottom side of the board. This diode affects the receive path only and is unrelated to transmitter problems.
Page 169: 25/10 Watt Power Amplifier
Troubleshooting Procedures: Power Amplifier Procedures 4-29 The directional coupler samples a small amount of forward power during transmit. This power is rectified by a detector diode CR3904. This rectified DC voltage is fed back to the RPCIC where it is compared to a reference voltage.
Page 170: Pa Functional Testing
4-30 Troubleshooting Procedures: Power Amplifier Procedures NOTE: Due to high operating frequencies, you must use specified Motorola parts when component replacement is necessary. Substitute components may not work. It is also critical that you use great care when replacing parts. Excessive solder or flux, longer than original leads on coax connectors, misorientation of parts, and other commonly benign imperfections may cause the radio’s performance to degrade.
Page 171: Figure 4-5. Pa Test Adapter, 25/10 Watt Power Amplifier
Troubleshooting Procedures: Power Amplifier Procedures 4-31 A+ TO COMMAND BOARD A+ TO COMMAND BOARD CURRENT SENSE + CURRENT SENSE - CONTROL VOLTAGE LIMIT FEMALE RECEPTACLE CONNECTOR W 100 MIL SPACING MATES TO P853 REGULATED 9.6V CONTROL VOLTAGE DRIVE V DETECT K9.4 TEMP SENSE Figure 4-5.
Page 172 4-32 Troubleshooting Procedures: Power Amplifier Procedures Table 4-11. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS U0500 Ground Control AMP Input Control AMP Input (not used) Control Voltage Limit (cutback at 3.3 V) N.C. Power Set from D-A (max power at 1.5 V) Power Set Buffer Out Coupler Buffer Out Forward Detect Voltage...
Page 173 Troubleshooting Procedures: Power Amplifier Procedures 4-33 Table 4-11. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS — — — — — — 9.6-V Programming (N.C.) — — — — — — 9.6-V Programming (N.C.) Ground 10.8 13.6 16.5 10.0...
Page 174: Localizing Problems
4-34 Troubleshooting Procedures: Power Amplifier Procedures Table 4-12. Antenna Switch DC Voltage Chart TYPICAL TX LOCATION TYPICAL RX NO PRE- COMMENTS DRIVE ANODE CR3920 CATHODE CR3921 ANODE CATHODE — — CR3922 ANODE <0.8 CATHODE — — 4.5.1.2.3 Localizing Problems Failure locations often can be determined by externally measured symptoms. Basic symptoms are noted below with probable failure locations.
Page 175: Isolating Failures
Troubleshooting Procedures: Power Amplifier Procedures 4-35 4.5.1.2.4 Isolating Failures Methods of analyzing individual stages of the Power Amplifiers are detailed below. Most of the stages are Class C and must be analyzed under relatively high RF power levels. Generators capable of such levels may not be available in all service shops, therefore the tests below are arranged in order of ascending power.
Page 176 4-36 Troubleshooting Procedures: Power Amplifier Procedures Testing Driver Circuitry The driver is a typical Class-C stage, except the base is biased with resistors R3809 and R3810. The necessary conditions for proper operation of this stage are input drive power, and bias conditions as shown in Table 4-13 on page 4-35.
Page 177: Power Control And Protection Circuitry
Troubleshooting Procedures: Power Amplifier Procedures 4-37 - Check for proper DC current through the PIN diodes; correct current is indicated if approximately 1.5 V is present at the junction of C3900 and L3900 during transmit mode. DO NOT measure bias directly at the PIN diodes while in transmit mode unless TX injection is removed.
Page 178: Watt Power Amplifiers
ASTRO Digital Spectra and Digital Spectra Plus Mobile Radios Basic Service Manual (6881076C20). NOTE: Due to high operating frequencies, you must use specified Motorola parts when component replacement is necessary. Substitute components may not work. It is also critical that you use great care when replacing parts.
Page 179: Table 4-14. Dc Voltages And Input Power Chart
Troubleshooting Procedures: Power Amplifier Procedures 4-39 4.5.1.3.2 PA Functional Testing To test the PA assembly for proper operation, perform the following steps: 1. Disassemble the PA assembly from the radio, leaving the power cable connected to the rear connector. Replace the PA shield and cover. Disconnect the coax connectors and the ribbon cable.
Page 180: Figure 4-6. Pa Test Adapter, 50 Watt Power Amplifier
4-40 Troubleshooting Procedures: Power Amplifier Procedures 8. If no failure is located from the previous checks, troubleshoot the power control circuitry. A+ TO COMMAND BOARD A+ TO COMMAND BOARD CURRENT SENSE + CURRENT SENSE - CONTROL VOLTAGE LIMIT FEMALE RECEPTACLE CONNECTOR W 100 MIL SPACING MATES TO P853 REGULATED 9.6V...
Page 181 Troubleshooting Procedures: Power Amplifier Procedures 4-41 Table 4-15. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS Control Voltage Limit (cutback at 3.3 V) N.C. Power Set from D-A (max power at 1.5 V) Power Set Buffer Out Coupler Buffer Out Forward Detect Voltage Reflected Power Detect (not used)
Page 182: Localizing Problems
4-42 Troubleshooting Procedures: Power Amplifier Procedures Table 4-15. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS TX PA Enable (from U520-25) Control AMP one-shot Lock (5-V of Synth Out of Lock) Control AMP one-shot 10.8 13.6 16.3 10.0 13.0...
Page 183: Table 4-16. Lla And Pre-Driver Typical Voltages
Troubleshooting Procedures: Power Amplifier Procedures 4-43 4. Power Zero and Current Greater Than 5 A. - Check harmonic filter, antenna switch, and matching circuits beyond final stage. 5. Power Zero and Current Between 2 and 5 A. - Check driver and/or final stages. 6.
Page 184 4-44 Troubleshooting Procedures: Power Amplifier Procedures If the above DC bias conditions are correct, check to see if the LLA is providing drive power to the pre-driver, Q3804. Do so by checking Q3804’s collector current under normal drive conditions, as follows: •...
Page 185: Power Control And Protection Circuitry
Troubleshooting Procedures: Power Amplifier Procedures 4-45 • Unsolder either L3859, R3875, or L3851 to isolate the driver and final stages. Measure the collector emitter DC resistances. If the resistance is below 5k ohms, then replace the driver device. NOTE: The position of capacitors C3853 and C3854 is critical to the performance of the circuit. If they are removed for any reason, they must be re-installed as close to the cap of the final device as possible.When replacing either the driver or final device, apply thermal compound on the heatsink surface.
Page 186 4-46 Troubleshooting Procedures: Power Amplifier Procedures Temperature Sense Circuit Test Temporarily place a leaded 6.8k ohm resistor in parallel with RT3875. Key the transmitter and monitor the output power. The power meter should read approximately 1/2 the rated power (25 Watts). Control-Voltage-Limit Circuitry Test Disconnect the transmitter injection from the internal transceiver chassis.
Page 187 ASTRO Digital Spectra and Digital Spectra Plus Mobile Radios Basic Service Manual (6881076C20). NOTE: Due to high operating frequencies, you must use specified Motorola parts when component replacement is necessary. Substitute components may not work. It is also critical that you use great care when replacing parts.
Page 188: Figure 4-7. Connector Pin-Out-High-Power Amplifier
4-48 Troubleshooting Procedures: Power Amplifier Procedures Begin troubleshooting by connecting an RF power meter and appropriate power load to the antenna connector. Connect the control cable and the power cable. Make sure the ignition sense lead is also connected to the positive lead of the power supply. Note that a regulated DC power supply capable of at least 30 A.
Page 189: Table 4-17. Power Control Dc Voltage Chart
Troubleshooting Procedures: Power Amplifier Procedures 4-49 Table 4-17. Power Control DC Voltage Chart RX MODE TX MODE LOCATION COMMENTS Control Voltage Limit 10.0 Drive Voltage 10.8 13.6 16.5 10.0 13.0 16.0 Current Sense + Keyed 9.4 10.8 13.6 16.5 10.0 13.0 16.0 A+ to Command Board...
Page 190 4-50 Troubleshooting Procedures: Power Amplifier Procedures Table 4-17. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS 5-V Series Pass Drive (6.4 at max current) 9.6-V Sense Input 5-V Reg. Compensation Capacitor N.C. 5-V Reference Input (UNSW5-V) 9.6-V Reg.
Page 191 Troubleshooting Procedures: Power Amplifier Procedures 4-51 Table 4-17. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS Control AMP Reference Q0500E 13.0 13.0 A+ - CR0500 Drop Q0501C 12.3 12.3 VQ0500E - B/E Drop Q0501E V pin 23 - B/E Drop Q0503E V pin 42 - B/E Drop (TX) Q0503C...
Page 192: Table 4-18. Lla And 2Nd Stage Typical Voltages
4-52 Troubleshooting Procedures: Power Amplifier Procedures Methods of analyzing individual stages of the power amplifiers are detailed below. Most of the stages are Class-C and must be analyzed under relatively high RF power levels. The following information should help in isolation and repair of the majority of transmitter failures. Testing Low-Level Amplifier (LLA) Circuitry Proper operation of the LLA can be checked by monitoring the voltage across resistor R5805.
Page 193 Troubleshooting Procedures: Power Amplifier Procedures 4-53 NOTE: If it is necessary to replace Q5803, use a hot-air blower to remove and replace the part. It is important that the replacement device’s case be properly soldered to its heatsink. Do so by flowing a small bead of solder around the rim of the device while it is clamped in the hot-air soldering device.
Page 194 4-54 Troubleshooting Procedures: Power Amplifier Procedures Installation of the PA board into the radio chassis must be done carefully. The PC board screws use a T-15 Torx bit and should be torqued to 6 to 8 inch-pounds. The device screws use a T-8 Torx bit and should be torqued to 6 to 8 inch-pounds.
Page 195 Troubleshooting Procedures: Power Amplifier Procedures 4-55 Control-Voltage-Limit Circuitry Test Disconnect J5901 (transmitter injection) from the PA input. With all other connections in normal condition, key the transmitter and monitor the control voltage at J1 pin 2. If the voltage exceeds 10.0 V, troubleshoot the control voltage limit circuitry.
Page 196: Figure 4-8. Block Diagram For Spectra High-Power Power Amplifier
4-56 Troubleshooting Procedures: Power Amplifier Procedures Low-Voltage Current Drain Cutback An additional circuit associated with the over-voltage protection circuit is the low-voltage current drain circuit. This circuit acts to reduce the transmitter current drain under conditions of low supply voltage. This action extends the available transmit time when, for example, the transmitter in a vehicular installation must be used when the engine is not running.
Page 197: Pa Functional Testing
ASTRO Digital Spectra and Digital Spectra Plus Mobile Radios Basic Service Manual (6881076C20). NOTE: Due to high operating frequencies, you must use specified Motorola parts when component replacement is necessary. Substitute components may not work. It is also critical that you use great care when replacing parts.
Page 198: Figure 4-9. Pa Test Adapter, 40 Watt Power Amplifier
4-58 Troubleshooting Procedures: Power Amplifier Procedures 8. If no failure is located from the previous checks, troubleshoot the power control circuitry. Table 4-19. DC Voltages and Input Power Chart CONTROL POWER IN Test Keyed 9.4 V 9.6 V VOLTAGE (mW) DRIVE Transmit See note...
Page 199: Table 4-20. Power Control Dc Voltage Chart
Troubleshooting Procedures: Power Amplifier Procedures 4-59 Table 4-20. Power Control DC Voltage Chart RX MODE TX MODE LOCATION COMMENTS P0853 — — — — — — Key (no pin or wire) Control Voltage Limit 10.0 Drive Voltage 10.8 13.6 16.5 10.0 13.0 16.0...
Page 200 4-60 Troubleshooting Procedures: Power Amplifier Procedures Table 4-20. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS 5-V Current Limit (limits at 5.7 V) 5-V Series Pass Drive (6.4 at max current) 9.6-V Sense Input 5-V Reg. Compensation Capacitor N.C.
Page 201: Table 4-21. Antenna Switch Dc Voltage Chart
Troubleshooting Procedures: Power Amplifier Procedures 4-61 Table 4-20. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS Loop Integrator Capacitor Control AMP Reference Q0500E 13.0 13.0 A+ - CR0500 Drop Q0501C 12.3 12.3 VQ0500E - B/E Drop Q0501E V pin 23 - B/E Drop Q0503E...
Page 202: Table 4-22. Lla And Pre-Driver Typical Voltages
4-62 Troubleshooting Procedures: Power Amplifier Procedures 3. Power Intermittently Low (or Zero) and Current Less than 1 A. When Power Drops - Check LLA stage. 4. Power Zero and Current Greater Than 2 A. - Check harmonic filter, antenna switch, matching circuits between driver and final stages, and matching circuits beyond final stage.
Page 203 Troubleshooting Procedures: Power Amplifier Procedures 4-63 NOTE: The LLA voltages change with different control voltages. An example of LLA voltages with control voltage equal to 10.0 V and 6 V is shown. If Q5803 draws no current under normal conditions, then check for short or open input cable, or for defective parts in the transmit injection filter or matching circuitry between Q5801 and Q5803.
Page 204: Power Control And Protection Circuitry
4-64 Troubleshooting Procedures: Power Amplifier Procedures 5. Testing the Antenna Switch and Harmonic Filter Verify that most of this circuit is functioning properly by testing the receiver insertion loss as follows: - Apply a low-level signal source at the antenna connector. - Apply the conditions indicated in Table 4-19 on page 4-58 for RX tests.
Page 205 Troubleshooting Procedures: Power Amplifier Procedures 4-65 3. Control-Voltage-Limit Circuitry Test Disconnect J5901 (transmitter injection) from the internal transceiver chassis. This will require removal of the power amplifier assembly. With all other connections in normal condition, key the transmitter and monitor the control voltage at the node of R5811, C5814,L5808, and R5808.
Page 206 ASTRO Digital Spectra and Digital Spectra Plus Mobile Radios Basic Service Manual (6881076C20). NOTE: Due to the high frequency of operation, it is imperative that you use specified Motorola parts when component replacement is necessary. At these frequencies, second and third order properties of the components are very important and are part of the circuit’s design.
Page 207: Figure 4-10. Pa Test Adapter, 15 And 35 Watt Power Amplifier
Troubleshooting Procedures: Power Amplifier Procedures 4-67 4.5.3.1.2 PA Functional Testing To test the PA assembly for proper operation, perform the following steps: NOTE: The following instructions pertain to both the 15 Watt and 35 Watt power amplifiers. A distinction between the two PA’s is given only where necessary. 1.
Page 208: Table 4-24. Power Control Dc Voltage Chart
4-68 Troubleshooting Procedures: Power Amplifier Procedures 3. Apply the required input power via adapter cable 30-80373B27 or equivalent. For this application, non N-type connectors are acceptable. 4. With the applied control voltage initially at 0 V slowly increase the voltage until power out equals 17 Watts (15-Watt radio) or 38 Watts (38-Watt radio) Power should rise smoothly with control voltage once the turn-on threshold is reached.
Page 209 Troubleshooting Procedures: Power Amplifier Procedures 4-69 Table 4-24. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS Power Set Buffer Out Coupler Buffer Out Forward Detect Voltage Reflected Power Detect (not used) Same as pin 8 (not used) Thermister Buffer out (increases as PA gets hot) Thermister Buffer in 5-V Sense Input (follows pin 20 ±0.1 V)
Page 210 4-70 Troubleshooting Procedures: Power Amplifier Procedures Table 4-24. Power Control DC Voltage Chart (Continued) RX MODE TX MODE LOCATION COMMENTS Control AMP one-shot 10.8 13.6 16.3 10.0 13.0 16.0 A+ (Current Sense +) 10.8 13.6 16.3 10.0 13.0 16.0 Current Sense - Voltage Delta 150 mV (35 Watt only) Keyed 9.4-V in Current Limit D-A (max current at 4.5 V)
Page 211: Table 4-25. Antenna Switch Dc Voltage Chart
Troubleshooting Procedures: Power Amplifier Procedures 4-71 Table 4-25. Antenna Switch DC Voltage Chart TYPICAL TX LOCATION TYPICAL RX NO PRE- COMMENTS DRIVE ANODE CR9920 TX Series P.I.N. diode CATHODE (on in TX mode) CR9921 ANODE TX Shunt P.I.N. diode CATHODE —...
Page 212: Isolating Failures
4-72 Troubleshooting Procedures: Power Amplifier Procedures 4.5.3.1.4 Isolating Failures Methods of analyzing individual stages of the Power Amplifiers are detailed below. Most of the stages are Class C and must he analyzed under relatively high RF power levels. Generators capable of such levels may not be available in all service shops, therefore the tests below are arranged in order of increasing power.
Page 213 Troubleshooting Procedures: Power Amplifier Procedures 4-73 When testing is complete, replace any capacitors or resistors that were removed for testing with new parts. 3. Testing the Final Stage (35-Watt Models Only) The final stage is capable of producing over 50 Watts. Be sure to protect power measuring equipment with series attenuation.
Page 214: Power Control And Protection Circuitry
4-74 Troubleshooting Procedures: Power Amplifier Procedures Additional antenna switch tests are: - Check CR9922 with an ohmmeter for forward and reverse continuity. - In the transmit mode, adjust control voltage for 38 Watts at the antenna connector. Check for less than 10 mW at the end of the receive input cable. If power exceeds 10 mW, then check CR9922 and associated circuitry.
Page 215 Troubleshooting Procedures: Power Amplifier Procedures 4-75 6. Power-Leveling Circuitry Test With the radio connected for power measurements, vary the line voltage from 12.5 to 16 V. The power should not vary more than 3 Watts. At a line voltage of 13.6 V, vary the frequency using the three test modes.
Page 216 4-76 Troubleshooting Procedures: Power Amplifier Procedures Notes October 28, 2002 6881076C25-D...
Page 217: Table 5-1. List Of Troubleshooting Charts
Chapter 5 Troubleshooting Charts Introduction This chapter contains detailed troubleshooting flowcharts. These charts should be used as a guide in determining the problem areas. They are not a substitute for knowledge of circuit operation and astute troubleshooting techniques. It is advisable to refer to the related detailed circuit descriptions in the theory section prior to troubleshooting a radio.
Page 218: Astro Spectra Plus Vocon Dc Supply Failure
Troubleshooting Charts: List of Troubleshooting Charts Table 5-1. List of Troubleshooting Charts (Continued) Chart Description Page 5-15 Chart C.20 No TX Modulation 5-16 Chart C.21 Key Load Fail 5-17 Chart C.22 800 MHz Receiver Front-End Hybrid 5-17 Chart C.23 UHF Receiver Front-End Hybrid 5-18 Chart C.24 VHF Receiver Front-End Hybrid...
Page 219: Rf Board Back-End
Troubleshooting Charts Bad SINAD. Bad 20Db Quieting. No Recovered Audio. Note: Inject Modulated On Carrier Frequency Signal As Required. Inject 1 st IF into Johnson connector on RF board IF Freqs: 109.65MHz Check RX Audio Front End. Heard? Check 2nd VCO "Second VCO Checks"...
Page 220 Troubleshooting Charts Note 1: See Control Head Troubleshooting Chart In Spectra Detailed Service Manual. Control Head Display: "FAIL 01/82" Note 2: See VOCON Board Troubleshooting Chart. "FAIL 01/84" Control Head Display: "FAIL 01/90" or Blank "FAIL 01/88" START "FAIL 01/02" START Replace and/or Check Busy In...
Page 221: Radio Power-Up Fail
Troubleshooting Charts Radio Power-Up Synopsis Failure. This failure assumes the radio fails to power up correctly and Verify Host Port: does not send any Power up Use ohmmeter to Verify standard failure messages via the electrically verify bias per table display or serial bus.
Page 222: Bootstrap Fail
Troubleshooting Charts Host C Synopsis Bootstrap Failure. The host C bootstrap mode is used during reprogramming of the host C and DSP FLASH ROMs. Refer to appropriate Verify standard Theory of Operation section for bias per table description of bootstrap Table 3.
Page 223: General Hardware Failure
Troubleshooting Charts Fail 01/81 Host ROM Checksum Synopsis Failure This failure indicates the Host ROM program code is incorrect. It is implied that the host Visually inspect all processor found and executed leads to U205 and enough valid code at power up U210 with a 5x glass.
Page 224: Or 002, External Eeprom Checksum Failure
Troubleshooting Charts Fail 01/82 or 002 External EEPROM Fail 01/84 Synopsis Synopsis Checksum Failure SLIC Init Failure This failure indicates the This failure indicates a failure External EEPROM data in verification of the data in the containing mostly customer SLIC parallel programming Use ohmmeter to electrically specific channel/mode Verify standard...
Page 225: Mcu (Host Mc) External Sram Failure
Troubleshooting Charts Fail 01/88 Host C External RAM Synopsis Failure. This failure indicates a failure in the C external SRAM at power up test. Some basic Verify standard failure modes: bias per table 1) Missing supply or ground to Fail 01/92 Table 3 pertaining SLIC.
Page 226: A0, Adsic Checksum Failure
5-10 Troubleshooting Charts Fail 02/81 Fail 02/A0 Synopsis DSP ROM Checksum ADSIC Checksum Synopsis The ADSIC calculates a checksum of the Failure Failure This failure indicates the DSP configuration bus data programmed ROM program code is incorrect. through the Host C SPI interface. This It is implied that the DSP found failure indicates some problem with the Visually inspect all...
Page 227: Dsp External Sram Failure U414
Troubleshooting Charts 5-11 Fail 02/84 Synopsis Fail 02/88 DSP SRAM U403 Synopsis On power-up the DSP writes DSP SRAM U414 Failure On power-up the DSP writes data to the device and then Failure data to the device and then verifies the data. This failure verifies the data.
Page 228: Dsp External Sram Failure U402
5-12 Troubleshooting Charts Fail 02/90 Fail 02/82 DSP Hardware Synopsis Synopsis Failure On power-up the host C sends DSP SRAM U402 several handshake commands On power up the DSP writes Failure through the host interface to the DSP system to coordinate data to the device and then Verify standard the power up programming of...
Page 229: Secure Hardware Failure
Troubleshooting Charts 5-13 Fail 09/10 Synopsis Secure Hardware This failure relates only to Failure secure equipped radios and Fail 09/90 Synopsis indicates a power up self-test Secure Hardware This failure relates only to failure for the secure module. Failure secure equipped radios and Verify connections More specifically this failure indicates a power up self-test...
Page 230 5-14 Troubleshooting Charts No Receive Audio Verify signals per Verify signal Fig. W2 at points at output of indicated. U524 pin 2. Set radio to test mode CSQ. Inject a 1KHz modulated signal at the carrier. Frequency at -60dBm level Verify signal with 3KHz deviation.
Page 231: No Tx Modulation
Troubleshooting Charts 5-15 No Tx Modulation Verify 1KHz signal present at U401. Verify standard bias per Table 6. Verify control Fig. W8 signals at U524. Trace 4 Ext Mic present? VRX TX audio Low Check for continuity Signal between U406 present? Isolate and Standard...
Page 232: Key Load Fail
5-16 Troubleshooting Charts Keyload Failure Verify the use of the correct keyloader per the following table: Secure Board Kit(s) KVL Kit(s) Encryption Synopsis NTN1146 NTN7770 T3010DX This failure relates only to NTN1152 NTN7771 T3011DX secure equipped radios and NTN1153 NTN7772 T3011DX DES-XL indicates a failure to load key...
Page 233: Mhz Receiver Front-End Hybrid
Troubleshooting Charts 5-17 START START Check Module Gain: Inject Check Module Gain: Inject Measure Transceiver On-Channel Signal Measure Transceiver Signal -20dBm at J9127 Sinad by Injecting (851-870 MHz) of -20dBm Sinad by Injecting Measure at IF Output Pad Signal at J9127 at J9127: Measure Level 109.65 Signal at J9127...
Page 234: Vhf Receiver Front-End Hybrid
5-18 Troubleshooting Charts START Check Module Gain: Inject Measure Transceiver 160MHz -20dBm at J9127 Sinad by Injecting Measure at IF Output Signal at J9127 Sinad Recheck RF Board and No Problem with >-13 with <-120 with Preamp Preamp; >-22 Non- RX Front End or Transceiver Sinad <-117 non-...
Page 235: Astro Spectra Plus Vocon Power-Up Failure
Troubleshooting Charts 5-19 Verify Standard Bias per Table (xref to standard operating bias table) See Chart C.26 Standard Bias Measure waveform at R428, should match Figure 6-11 Make sure the following Refer board to components are placed Fixed? Replace U408 Fixed? Replace Y401 Service Depot...
Page 236 5-20 Troubleshooting Charts Check for 1.8V at R419 Make sure the following Refer board to components are placed Fixed? Replace U410 Service Depot and soldered correctly: Present? U410, C430 R431, R451, R452, C433, C415, R419 Repair proper Check for 3.0 V at R420 components Make sure the following components are placed...
Page 237 Troubleshooting Charts 5-21 Inspect and Repair Repair proper components U202 Inject a 1kHz tone into MIC with sufficient amplitude to produce 3kHz of deviation, PTT radio Make sure the following components Replace U202 Check 5V supply of U202-8 are placed and soldered correctly: U202, R207, R208, C216, R209, R226, and GND U202-4 Amplitude of...
Page 238 5-22 Troubleshooting Charts Inspect U201 Repair component Check Patriot clocks C326 - T1 - 16.8MHz R428 - T2 - 32kHz 16.8MHz Measure waveform at U201-39 Repair regulator Repair components Clock should match Figure 6-12 circuit Inspect and repair Patriot IC - U300 Inspect R200, Waveform Repair oscillator...
Page 239 Troubleshooting Charts 5-23 Inspect U402, also check 3V at pin6 and GND at pin 15 Inspect U501 Repair U402 Repair U501 Inspect U404, also check 5V at pin8 and GND at pin 4 Is problem with TXPA_EN Check for GND Keyed9.4_EN or at J501-14 Present?
Page 240 5-24 Troubleshooting Charts Put the radio into Test mode (CSQ 1). Connect RF Signal Generator to the RF input of the radio. Use Dev=3kHz, Amplitude=-47dBm and Freq=851.025MHz Measure waveform at TP403, Amplitude of Measure waveform at the Vocon should match Figure 6-17 waveform Connector, J501 pin 40.
Page 241 Troubleshooting Charts 5-25 Make sure the Secure Module is connected to the Plus VOCON board and the radio is ON Measure the voltage at pins 1, 2 and 20 on the secure connector. The voltage reading should be between 10V and 13V Measure voltage on Q600, Verify placement, soldering Voltages...
Page 242 5-26 Troubleshooting Charts Make sure the Secure Module is connected Synopsis to the Plus VOCON board and the radio is ON This failure relates only to secure equipped radios and indicates a failure to load a key with the KVL indicated by the message “xFail”...
Page 243: Chapter 6 Troubleshooting Waveforms
Waveform W7: Receive Audio Waveform W8: Transmit Audio Waveform W9: Power-Down Reset Waveform W10: ADSIC 2.4 MHz Reference ASTRO Digital Spectra Plus VOCON Waveforms 32 kHz Clock Waveform 16.8 MHz Clock Waveform TX Modulation Out Waveform Differential ADDAG Output Waveform...
Page 244: Astro Digital Spectra Waveforms
Troubleshooting Waveforms: ASTRO Digital Spectra Waveforms ASTRO Digital Spectra Waveforms Waveform W1: Power-On Reset Timing SWB+ 217mS MAEPF-25187-O Waveform W2: DSP SSI Port RX Mode Tek stopped: 2893 Acquisitions Ch1 Freq 19.991kHz Low signal amplitude 5.00V 5.00V M 20.0us Ch1 2.2 V 5.00V MAEPF-24377-O...
Page 245: Waveform W3: Dsp Ssi Port Tx Mode Csq
Troubleshooting Waveforms: ASTRO Digital Spectra Waveforms Waveform W3: DSP SSI Port TX Mode CSQ Tek stopped: 2836 Acquisitions Ch1 Freq 47.856kHz Low signal amplitude 5.00V M 5.00us Ch1 2.2 V 5.00V 5.00V MAEPF-24378-O W3: DSP SSI Port TX mode CSQ. Trace 1 - SC2 Trace 2 - STD Trace 3 - SCK (1.2MHz)
Page 246: Waveform W5: Abacus/Adsic Interface
Troubleshooting Waveforms: ASTRO Digital Spectra Waveforms Waveform W5: ABACUS/ADSIC Interface Tek stopped: 34513 Acquisitions Ch1 Freq 2.251920 MHz Low resolution 2.00V 500mV M 5.00us Ch1 2.2 V 500mV MAEPF-24380-O W5: ABACUS/ADSIC Interface. Receiving 1KHz tone @ 3KHz deviation, -60dbm. Trace 1 -IDC (2.4MHz) Trace 2 - DOUT TRACE 3 - DOUT* Note 2: Since these signals are a differential...
Page 247: Waveform W7: Receive Audio
Troubleshooting Waveforms: ASTRO Digital Spectra Waveforms Waveform W7: Receive Audio Tek stopped: 103 Acquisitions Ch1 Freq 7.9118kHz Low signal amplitude 5.00V 500mV M 200us Ch1 2.20 V 10.00V 10.00V W7: Receive audio: Receiving 1KHz tone @ 3KHz deviation, -60dBm. Volume set to rated audio. Trace 1 - IRQB @ DSP (8KHz) Trace 2 - SD0 @ C412 on Command Board Trace 3 - SPKR_LOW Out of U450...
Page 248: Waveform W9: Power-Down Reset
Troubleshooting Waveforms: ASTRO Digital Spectra Waveforms Waveform W9: Power-Down Reset Tek stopped: 1 Acquisitions 2.00V 2.00V M1.00ms Ch1 4.52 V MAEPF-24384-O W9: Power Down Reset. Trace 1 - +5V @ U407 (VDD) Trace 2 - Reset @ U407 (OUT) Waveform W10: ADSIC 2.4 MHz Reference 493 Acquisitions Tek stopped: Ch1 Freq...
Page 249: Astro Digital Spectra Plus Vocon Board Waveforms
Troubleshooting Waveforms: ASTRO Digital Spectra Plus VOCON Board Waveforms ASTRO Digital Spectra Plus VOCON Board Waveforms This section contains images of waveforms specific to the ASTRO Digital Spectra Plus VOCON board. These waveforms might be useful in verifying operation of certain parts of the circuitry. These waveforms are for reference only;...
Page 250: Mhz Clock Waveform
Troubleshooting Waveforms: ASTRO Digital Spectra Plus VOCON Board Waveforms 16.8 MHz Clock Waveform Trace 1 — TP401 — 16.8 MHz Clock TX Modulation Out Waveform Transmitting 1 kHz tone at 85mVrms into microphone Trace 1 — U201 — 9 October 28, 2002...
Page 251: Differential Addag Output Waveform
Troubleshooting Waveforms: ASTRO Digital Spectra Plus VOCON Board Waveforms Differential ADDAG Output Waveform Transmitting 1 kHz tone at 85mVrms into microphone Trace 1 — U201 — 4 Trace 2 — U201 — 5 TX SSI Waveform Transmitting 1 kHz tone at 85mVrms into microphone Trace 1 —...
Page 252: Spi Bus Waveform
6-10 Troubleshooting Waveforms: ASTRO Digital Spectra Plus VOCON Board Waveforms SPI Bus Waveform Radio Power Up Trace 1 — U201 — 41 - Data Trace 2 — U201 — 43 - Chip Select Trace 3 — U201 — 42 - Clock...
Page 253: Serial Audio Port Waveform
Troubleshooting Waveforms: ASTRO Digital Spectra Plus VOCON Board Waveforms 6-11 Serial Audio Port Waveform Transmitting 1 kHz tone at 85mVrms into microphone Trace 1 — U402 — 7 - Frame Sync Trace 2 — U402 — 11 - Clock Trace 3 — U402 — 13 - Data...
Page 254: Rx Bbp Waveform
6-12 Troubleshooting Waveforms: ASTRO Digital Spectra Plus VOCON Board Waveforms RX BBP Waveform Receiving 1 kHz tone at 3 kHz Dev, -47dBm Trace 1 — TP221 — Frame Sync Trace 2 — TP223 — Data Trace 3 — TP219 — Clock...
Page 255: Khz Frame Sync For Security Circuitry Waveform
Troubleshooting Waveforms: ASTRO Digital Spectra Plus VOCON Board Waveforms 6-13 8 kHz Frame Sync for Security Circuitry Waveform Receiving 1 kHz tone at 3 kHz Dev, -47dBm Secure Mode Trace 1 — U601 — 5 6881076C25-D October 28, 2002...
Page 256 6-14 Troubleshooting Waveforms: ASTRO Digital Spectra Plus VOCON Board Waveforms Notes October 28, 2002 6881076C25-D...
Page 257: Chapter 7 Schematics, Component Location Diagrams And Parts Lists
Schematics, Component Location Diagrams and Parts Lists: List of Schematics and Component Location Diagrams Chapter 7 Schematics, Component Location Diagrams and Parts Lists List of Schematics and Table 7-1. List of Schematics and Component Location Table 7-1. List of Schematics and Component Location Table 7-1.
Page 258: Rf Section
Schematics, Component Location Diagrams and Parts Lists: RF Section Table 7-1. List of Schematics and Component Location RF Section Table 7-3. P502 Command Board to Control Head Table 7-3. P502 Command Board to Control Head Diagrams (Continued) Interconnect Board (Continued) Interconnect Board Table 7-2.
Page 259: Table 7-6. J501 Command Board To Vocon Board
Schematics, Component Location Diagrams and Parts Lists: RF Section Table 7-5. Configuring Command Board Jumpers for Non- Table 7-6. J501 Command Board to VOCON Board Table 7-7. J801 VOCON Board to Encryption Board Table 7-8. J601 RF Board to VCO Board RS232 Operation J501 J801...
Page 260: Astro Spectra Radio Interconnection
Schematics, Component Location Diagrams and Parts Lists: RF Section MID/LOW-POWER PA HIGH-POWER PA ANTENNA ANTENNA CONNNECTOR CONNNECTOR DIRECTIONAL LPF/ FRONT-END COUPLER/ ANTENNA SW RECEIVER DETECTOR BOARD COAXIAL CABLE FRONT-END RECEIVER BOARD DIRECTIONAL LPF/ FRONT-END COUPLER/ ANTENNA SW RECEIVER DETECTOR BOARD LOW-POWER IF AMP MIXER...
Page 261: Hrn4009B/Hrn6014A Vhf Rf Board, Hrn4010B/Hrn6020A Uhf Rf Board, And Hrn6019A 800 Mhz Rf Board Schematic
Schematics, Component Location Diagrams and Parts Lists: RF Section O.K. AS IS EDITOR DATE CHECKER DATE CORRECTED O.K. AS MARKED MARKED ISS. REVISION RLSE. LETTERING SIZE: REQUIRES: MAEPF-27086-O HRN4009B/HRN6014A VHF RF Board, HRN4010B/HRN6020A UHF RF Board, and HRN6019A 800 MHz RF Board Schematic 6881076C25-D October 28, 2002...
Page 262: Hrn4009B/Hrn6014A Vhf Rf Board, Hrn4010B/Hrn6020A Uhf Rf Board, And Hrn6019A 800 Mhz Rf Board Component Location Diagrams
Schematics, Component Location Diagrams and Parts Lists: RF Section MAEPF-27088-O MAEPF-27087-O HRN4009B/HRN6014A VHF RF Board, HRN4010B/HRN6020A UHF RF Board, and HRN6019A 800 MHz RF Board Component Location Diagrams October 28, 2002 6881076C25-D...
Page 263 Schematics, Component Location Diagrams and Parts Lists: RF Section HRN4009B, HRN6014A VHF RF Board MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION HRN4010B, HRN6020A UHF RF Board PART NUMBER PART NUMBER PART NUMBER HRN6019A 800 MHz RF Board or 2113740B13 3.3pF (UHF and 800 MHz Bds)
Page 264 Notes: or 0611077B01 12k (UHF Bd) For optimum performance, order replacement diodes, transistors, and circuit or 0611077A98 10k (800MHz Bd) modules by Motorola part number only. When ordering crystals, specify carrier frequency, crystal frequency, crystal R617 0611077B11 type number, and Motorola part number.
Page 265: Hrn4009C/Hrn6014C Vhf Rf Board Schematic Diagram
Schematics, Component Location Diagrams and Parts Lists: RF Section MAEPF-27089-O HRN4009C/HRN6014C VHF RF Board Schematic Diagram 6881076C25-D October 28, 2002...
Page 266: Hrn4009C/Hrn6014C Vhf Rf Board Component Location Diagrams
7-10 Schematics, Component Location Diagrams and Parts Lists: RF Section MAEPF-27090-O MAEPF-27091-O HRN4009C/HRN6014C VHF RF Board Component Location Diagrams October 28, 2002 6881076C25-D...
Page 267 For optimum performance, order replacement diodes, transistors, and circuit R318 0611077A01 C604 2113741N21 1000pF E302 2680004M03 Ferrite Bead modules by Motorola part number only. R319 - - - - - Not Placed When ordering crystals, specify carrier frequency, crystal frequency, crystal C605 2380090M06 10pF E602...
Page 268: Hrn4009E/Hrn6014D Vhf Rf Board, Hrn4010D/Hrn6020C Uhf Rf Board, And Hrn6019C 800 Mhz Rf Board Schematic Diagram (Sheet 1 Of 2)
7-12 Schematics, Component Location Diagrams and Parts Lists: RF Section 9.6V J500-12 CASE2 CASE1 JU351 JU352 +5V-REG C322 0.1uF FLTR K9.4V FL300 R313 J500-22 R311 J500-23 J500-24 CASE2 CASE1 Q353 Q351 R307 C312 *R355* 470pF C314 FLTR 0.1uF R358 FL301 R612 220K R308...
Page 269: Hrn6019C 800 Mhz Rf Board Schematic Diagram (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: RF Section 7-13 J602 NOTE 3 R641 T-LINE 2 J500-1 U600 SPARE 91B11 C330 C618 J500-13 16.8MHz 100pF 0.1uF R602 C610 R642 REF-TUNE 1 WARP J500-2 RF_OUT SYNTH-FDBK .01uF C619 C329 0.1uF 0.1uF *JU601* T-LINE 1 R670...
Page 270: Hrn4009E/Hrn6014D Vhf Rf Board, Hrn4010D/Hrn6020C Uhf Rf Board, And Hrn6019C 800 Mhz Rf Component Location Diagram
7-14 Schematics, Component Location Diagrams and Parts Lists: RF Section 8485219C03 C617 C636 C636 Q607 Q607 L604 C615 C615 R608 R627 R627 C616 R628 R628 L605 C611 CR602 CR603 C657 R653 C343 C638 R610 C621 C621 C318 C631 C629 R630 C639 C656 R618...
Page 271 Schematics, Component Location Diagrams and Parts Lists: RF Section 7-15 HRN4009E and HRN6014D VHF RF Board, HRN6010D MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION and HRN6020C UHF RF Board, and HRN6019C 800 PART NUMBER PART NUMBER PART NUMBER...
Page 272 Pad, VF Shock 8485219C02 Circuit Board Notes: For optimum performance, order replacement diodes, transistors, and circuit modules by Motorola part number only. When ordering crystals, specify carrier frequency, crystal frequency, crystal type number, and Motorola part number. Part value notations: p=10...
Page 273: Command Board Section
Schematics, Component Location Diagrams and Parts Lists: Command Board Section 7-17 Command Board Section HLN5558E/F/G, HLN6529C/D/E/F/G, HLN6560C/D/E/F/G/H, and HLN6562C/D/E/F/G/H Command Board Schematic Diagram 6881076C25-D October 28, 2002...
Page 274: Hln5558E/F/G, Hln6529C/D/E, Hln6560C/D/E/F/G/H, And Hln6562C/D/E/F/G/H Command Board Component Location Diagrams
7-18 Schematics, Component Location Diagrams and Parts Lists: Command Board Section MEDIA & COMMUNICATIONS DEPT. Astro Mobile Command Board DWG. NO. MAEPF-25699 HLN5558DSP01/8405885V05 ILLUSTRATOR DATE ENGINEER DATE PROGRAM DISK CHECK 7/17/96 Illustrator O.K. AS IS EDITOR DATE CHECKER DATE CORRECTED O.K.
Page 275 NOTPLACED 0611077A01 NOTPLACED JU532 NOTPLACED NOTPLACED NOTPLACED 0611077A01 R561 0611077B29 NOTPLACED 0611077B29 NOTPLACED HLN5558E/F/G, HLN6529C/D/E, HLN6560C/D/E/F/G/H, MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION and HLN6562C/D/E/F/G/H Parts List PART NUMBER PART NUMBER PART NUMBER or 2113740B59 270pF (HLN5558F/G and...
Page 276 R525 0611077A50 Notes: or 0611077B29 180k (HLN5558E and For optimum performance, order replacement diodes, transistors, and circuit R526 0611077B07 HLN6529C) modules by Motorola part number only. R527 thru 531 0611077B15 R409, 410 0611077B11 Part value notations: R532, 533 0611077A62 R411, 412...
Page 277: Hln5558H/J, Hln6529H, Hln6560J, And Hln6562J Command Board Schematic Diagram
Schematics, Component Location Diagrams and Parts Lists: Command Board Section 7-21 HLN5558H/J, HLN6529H, HLN6560J, and HLN6562J Command Board Schematic Diagram 6881076C25-D October 28, 2002...
Page 278: Hln5558H/J, Hln6529H, Hln6560J, And Hln6562J Component Location Diagram
7-22 Schematics, Component Location Diagrams and Parts Lists: Command Board Section C571 Q517 R536 R552 Q516 side 1 side 2 HLN5558H/J, HLN6529H, HLN6560J, and HLN6562J Component Location Diagram October 28, 2002 6881076C25-D...
Page 279 0611077A01 0611077A01 NOTPLACED NOTPLACED JU528 NOTPLACED NOTPLACED 0611077A01 NOTPLACED JU532 NOTPLACED NOTPLACED NOTPLACED 0611077A01 HLN5558H/J, HLN6529H, HLN6560J, and HLN6562J MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION Parts List PART NUMBER PART NUMBER PART NUMBER C438 2311049J09 CAP TANT CHIP 3.3 10 35 C500 &...
Page 280 7-24 Schematics, Component Location Diagrams and Parts Lists: Command Board Section MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER PART NUMBER C581 2113740B65 CAP CHIP REEL CL1 +/-30 CR401 4813833C03 DIODE DUAL 70V ’A1X’...
Page 281 Schematics, Component Location Diagrams and Parts Lists: Command Board Section 7-25 MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER R528 thru 0611077B15 RES CHIP 47K 5 1/8W U523 5113806A20 IC MUX/DEMUX,TRIPLE 2- R531 CHNL R532 & R533 0611077A62...
Page 282: Vocon Section
7-26 Schematics, Component Location Diagrams and Parts Lists: VOCON Section VOCON Section 63B81087C40-O HLN6458D VOCON Board Schematic (Sheet 1 of 2) October 28, 2002 6881076C25-D...
Page 283: Hln6458D Vocon Board Schematic (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-27 VOCON Section J501 VOCON Universal Connector DOUT* DOUT CTS/RS232 SCLK) MOS1 LOCK DET6 SYN SEL* ROSC/PSC CE*) DA SEL* ROW4/TXPA EN* ROW5/5V EN EMERG LH/RX DATA LH/TX DATA BUSY OUT BUSY RTS KEY FAIL* VIP OUT1...
Page 284: Hln6458D Vocon Board Component Location Diagrams (Sheet 1 Of 2)
7-28 Schematics, Component Location Diagrams and Parts Lists: VOCON Section DECIN RXDIN OVERRIDE MCM56824ZP25 IRQB SC415012ZP HC11RST DSPRAM SLIC SCNEN 62U52 X XIRQ VDD3 VSS1 57W06 0 29V12 VSS3 VDD1 RESET TXPG028NP06 ATWLYYWW WAUDWL9201 ATWLYYWWW JAPAN RTSBOUT JAPAN SCNSLB RTSBIN BOOTRX A14IN MAEPF-24369-O...
Page 285: Hln6458D Vocon Board Component Location Diagrams (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-29 HREQ* HR/W* HEN* DSP56001ZP33 HACK* 29V08 RST* IRQA WAUDWL9201 IRQB JAPAN XTAL MEDIA & COMMUNICATIONS DEPT. EXTAL ASTRO Spectra VOCON DWG. NO. MAEPF-26122 8405160Y01.O (HLN6458D) ILLUSTRATOR DATE ENGINEER DATE PROGRAM DISK CHECK 7/21/97...
Page 286 7-30 Schematics, Component Location Diagrams and Parts Lists: VOCON Section HLN6458D VOCON Board Parts List MOTOROLA PART MOTOROLA PART MOTOROLA PART ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION NUMBER NUMBER NUMBER MOTOROLA PART ITEM DESCRIPTION C265 thru - - - - - - - - - -...
Page 287 Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-31 MOTOROLA PART MOTOROLA PART MOTOROLA PART ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION NUMBER NUMBER NUMBER R259 & 0662057A97 CHIP RES 100K OHMS 5% R481 0662057A97 CHIP RES 100K OHMS 5%...
Page 288: Hln6458E Vocon Board Schematic (Sheet 1 Of 2)
7-32 Schematics, Component Location Diagrams and Parts Lists: VOCON Section 63B81087C42-O HLN6458E VOCON Board Schematic (Sheet 1 of 2) October 28, 2002 6881076C25-D...
Page 289: Hln6458E Vocon Board Schematic (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-33 J501 VOCON Universal Connector DOUT* DOUT CTS/RS232 SCLK) MOS1 LOCK DET6 ROSC/PSC CE*) SYN SEL* ROW4/TXPA EN* DA SEL* ROW5/5V EN EMERG LH/RX DATA LH/TX DATA BUSY OUT BUSY RTS KEY FAIL* VIP OUT1 J501...
Page 290: Hln6458E Vocon Board Component Location Diagrams (Sheet 1 Of 2)
7-34 Schematics, Component Location Diagrams and Parts Lists: VOCON Section HREQ* Fiducial Fiducial DECIN RXDIN VSS1 OVERRIDE SCLK HR/W* VSSAb IRQB HEN* V20b HC11RST DSP56001ZP33 HACK* SLIC SCNEN VAGB VDD3 VSS1 SC380017ZP VAG0b 57W06 0 VDDAb VSS3 VDD1 GDRN TXPG028NP06 ADSIC EPSb 29V08...
Page 291: Hln6458E Vocon Board Component Location Diagrams (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-35 MEDIA & COMMUNICATIONS DEPT. ASTRO Spectra VOCON DWG. NO. MAEPF-26124 8405160Y02.B (HLN6458E) ILLUSTRATOR DATE ENGINEER DATE PROGRAM DISK CHECK 7/21/97 Illustrator O.K. AS IS EDITOR DATE CHECKER DATE CORRECTED O.K. AS MARKED MARKED ISS.
Page 292 7-36 Schematics, Component Location Diagrams and Parts Lists: VOCON Section HLN6458E VOCON Board Electrical Parts List MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION C467 2113930F24 7.5pF Q208 4805128M12 R270, 271...
Page 293 MISCELLANEOUS: 8405160Y02 Printed Circuit Board Notes: For optimum performance, order replacement diodes, transistors, and circuit modules by Motorola part number only. When ordering crystals, specify carrier frequency, crystal frequency, crystal type number, and Motorola part number. Part value notations: p=10 n=10 µ=10...
Page 294: Hln6458F/G Vocon Board Schematic (Sheet 1 Of 2)
7-38 Schematics, Component Location Diagrams and Parts Lists: VOCON Section MAEPF-27097-O SHEET 1 HLN6458F/G VOCON Board Schematic (Sheet 1 of 2) October 28, 2002 6881076C25-D...
Page 295: Hln6458F/G Vocon Board Schematic (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-39 J501 VOCON J501 VOCON Universal Connector Universal Connector DOUT* DOUT* DOUT DOUT CTS/RS232 CTS/RS232 SCLK) SCLK) MOS1 MOS1 LOCK DET6 LOCK DET6 ROSC/PSC CE*) ROSC/PSC CE*) SYN SEL* SYN SEL* DA SEL* ROW4/TXPA EN* ROW4/TXPA EN*...
Page 296: Hln6458F/G Vocon Board Component Location Diagrams (Sheet 1 Of 2)
7-40 Schematics, Component Location Diagrams and Parts Lists: VOCON Section HREQ* Fiducial Fiducial VSS1 RXDIN DECIN SCLK OVERRIDE VSSAb HR/W* V20b IRQB HEN* HC11RST HACK* DSP56001ZP33 SLIC VAGB SCNEN SC380017ZP VAG0b VDDAb VSS1 VDD3 57W06 0 GDRN VSS3 ADSIC VDD1 EPSb IRQB TXPG028NP06...
Page 297: Hln6458F/G Vocon Board Component Location Diagrams (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-41 MEDIA & COMMUNICATIONS DEPT. Astro Saber Vocon DWG. NO. MAEPF-27096 PCB - 8405160Y03 ILLUSTRATOR DATE ENGINEER DATE PROGRAM DISK CHECK 6/30/99 Illustrator O.K. AS IS EDITOR DATE CHECKER DATE CORRECTED O.K.
Page 298 7-42 Schematics, Component Location Diagrams and Parts Lists: VOCON Section HLN6458F/G VOCON Board Parts List MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION C269 - - - - - - - - - -...
Page 299 Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-43 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER PART NUMBER R257 thru 0662057A97 CHIP RES 100K OHMS 5% R308 0662057B47 CHIP RES 0 OHMS +-.050...
Page 300: Hln6458H Vocon Board Schematic (Sheet 1 Of 2)
7-44 Schematics, Component Location Diagrams and Parts Lists: VOCON Section MAEPF-27100 SHEET 1 HLN6458H VOCON Board Schematic (Sheet 1 of 2) October 28, 2002 6881076C25-D...
Page 301: Hln6458H Vocon Board Schematic (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-45 J501 VOCON Universal Connector DOUT* DOUT CTS/RS232 SCLK) MOS1 LOCK DET6 ROSC/PSC CE*) SYN SEL* ROW4/TXPA EN* DA SEL* EMERG ROW5/5V EN LH/RX DATA LH/TX DATA BUSY RTS BUSY OUT KEY FAIL* VIP OUT1 VIP OUT2...
Page 302: Hln6458H Vocon Board Component Location Diagrams
7-46 Schematics, Component Location Diagrams and Parts Lists: VOCON Section VIEWED FROM SIDE 1 RXDIN DECIN OVERRIDE IRQB HC11RST SLIC SCNEN VDD3 VSS1 57W06 0 VSS3 VDD1 TXPG028NP06 ATWLYYWWW RTSBOUT MEDIA & COMMUNICATIONS DEPT Astro Saber Vocon DWG. NO. MAEPF-270 PCB - 8405160Y04 SCNSLB ILLUSTRATOR...
Page 303 Schematics, Component Location Diagrams and Parts Lists: VOCON Section 7-47 HLN6458H VOCON Board Electrical Parts List MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION C416 thru 420 2113932K15 0.1µF CR205...
Page 304 ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER modules by Motorola part number only. When ordering crystals, specify carrier frequency, crystal frequency, crystal R251 0662057B47 R419 0662057A73 U214 5105279V65 AND Gate type number, and Motorola part number.
Page 305: Astro Spectra Plus Vocon Section
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-49 ASTRO Spectra Plus VOCON Section USB CONNECTOR SECURE_CNT(12:0) USB_D+ TP100 USB_D- TP101 USB_PWR TP102 TP103 USB_CONTROL TP104 USB_BOOT TP105 CODEC_PWR_DOWN USB_VPP TP106 KRSIC_SEL USB_MOD TP107 DOUT* MISOB MISOB DCLK DCLK...
Page 306: Astro Spectra Plus Vocon Top Level Schematic (Sheet 2 Of 2)
7-50 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section VOCON BOARD CONNECTOR TX-RS232_3 TX-RS232_5 J501-43 TX/RS232 CTS-RS232_3 CTS-RS232_5 LH-TX_DATA_3 LH-TX_DATA_5 J501-5 CTS/RS232 BUSY_OUT_3 BUSY_OUT_5 LH_RESETO_3 LH_RESETO_5 LH/TX_DATA J501-18 DISP_EN-LATCH_3 DISP_EN-LATCH*_5 SPKR_EN_3 SPKR_EN_5 BUSY_OUT J501-19 TXPA_EN*_3 TXPA_EN*_5 J501-27 LH_RSTO K9_4EN-MIC_EN_3...
Page 307: Hln6837A Astro Spectra Plus Rf Interface Schematic (Sheet 1 Of 2)
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-51 ASTRO Spectra Plus VOCON Section KRSIC_DB(7:0) KRSIC_DB(7:0) KRSIC_AB(4:0) KRSIC_AB(4:0) VCC3.0 VCC3.0 C200 ADDAG_SEL R200 QSCKA 0.1uF ADDAG QSPIA 100K MOSIA C201 MISOA 4.3pF R201 100K VCC3.0 VCC5.0 VCC5.0 C202 0.1uF...
Page 308: Hln6837A Astro Spectra Plus Rf Interface Schematic (Sheet 2 Of 2)
7-52 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section R242 R241 VCC3.0 R243 R240 5.6K R245 3.3K R234 VCC5.0 Q200 R250 ABACUSII 4.7K L200 DOUT* INTERFACE DOUT 270nH VCC3.0 R213 VCC3.0 Q201 R214 R215 Q202 VCC3.0 VCC3.0 R216 R246...
Page 309: Hln6837A Astro Spectra Plus Digital/Usb Schematic (Sheet 1 Of 2)
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-53 EIM MODULE 12V_VPP USB_VPP VR302 VCC1.8 TP312 TP313 TP314 VCC1.8 TP336 R301 TP337 TP338 C303 C302 0.1uF 0.1uF D300 U302 CY62147V EN_BLE 28F320 EN_OE EN_BHE EN_CE R/W* EN_WE BURSTCLK SRAM...
Page 310: Hln6837A Astro Spectra Plus Digital/Usb Schematic (Sheet 2 Of 2)
7-54 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section KRSIC_DB(7:0) VCC3.0 R340 spare parts BRD_ID0 *U300-4* SIM_INT_TOUT_BLOCK L300 VCC3.0 MC74LCX125 R341 U306-1 EEPOT_INC* EEPOT C300 SIM_D0TX_PB4 EEPOT_CS* BRD_ID1 C301 C313 C310 C311 C312 SIM_D0RX_PB5 SIM_RST0_PB6 EEPOT_U_D* CONTROL BBP(7:0) 33pF...
Page 311: Hln6837A Astro Spectra Plus Audio/Dc Schematic
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-55 AUDIO DC BLOCK VCC3.0 VCC3.0 VCC3.0 C441 R403 0.1uF C425 C400 C401 U400 0.1uF U401 0.1uF VCC3.0 4.7uF MAX5160 MAX5160 EEPOT_CS R402 BCLKR EEPOT_U_D* 100K BCLKT MCLK EEPOT_INC* R404 RO_NEG...
Page 312: Hln6837A Astro Spectra Plus Voltage Conversion Schematic
7-56 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section HLN6837A ASTRO Spectra Plus Voltage Conversion Schematic October 28, 2002 6881076C25-D...
Page 313: Hln6837A Astro Spectra Plus Secure Interface Schematic
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-57 HLN6837A ASTRO Spectra Plus Secure Interface Schematic 6881076C25-D October 28, 2002...
Page 314: Hln6837A Astro Spectra Plus Vocon Component Location Diagram, Top View
7-58 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section R307 C330 R347 R316 U307 U304 R308 R325 C300 R318 U303 C301 U410 C314 L300 L301 R329 VR302 C308 U306 C324 C310 C315 U301 R303 R452 U601 R322 L400 R232...
Page 315: Hln6837A Astro Spectra Plus Vocon Component Location Diagram, Bottom View
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-59 R603 R403 R342 C425 C406 C407 R219 R340 R404 R401 TP401 Q203 U402 U401 R405 R229 R216 R230 C211 R221 Q202 U400 Q204 R400 C210 R215 C400 R249 C214 C205...
Page 316 7-60 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section HLN6837A ASTRO Spectra Plus VOCON Electrical MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION Parts List PART NUMBER PART NUMBER PART NUMBER MOTOROLA C305 2113743M24 CAP CHIP 100000 PF +80-20%...
Page 317 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-61 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER PART NUMBER R223 0662057M98 RES. CHIP 10K 5% 20X40...
Page 318: Hln6837C Astro Spectra Plus Vocon Top Level Schematic (Sheet 1 Of 2)
7-62 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section SECURE_CNT(12:0) USB CONNECTOR USB_D+ TP100 USB_D- TP101 USB_PWR TP102 TP103 TP104 USB_CONTROL TP105 USB_BOOT RF INTERFACE BLOCK DIGITAL/USB BLOCK USB_VPP TP106 KRSIC_SEL ABACUS II/ KRSIC USB_MOD TP107 DOUT* MISOB MISOB...
Page 319: Hln6837C Astro Spectra Plus Vocon Top Level Schematic (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-63 VOLTAGE CONVERSION BLOCK VOCON BOARD CONNECTOR 5V TO COMMAND 3V FROM VOCON TX-RS232_3 TX-RS232_5 J501-43 TX/RS232 AUDIO DC BLOCK CTS-RS232_3 CTS-RS232_5 LH-TX_DATA_3 LH-TX_DATA_5 J501-5 CTS/RS232 CODEC_PWR_DOWN BUSY_OUT_3 BUSY_OUT_5 LH_RESETO_3 LH_RESETO_5...
Page 320: Hln6837C Astro Spectra Plus Digital/Memory Schematic (Sheet 1 Of 2)
7-64 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section KRSIC_DB(7:0) *U300-4* SIM_INT_TOUT_BLOCK EEPOT_INC* EEPOT EIM MODULE SIM_D0TX_PB4 EEPOT_CS* SIM_D0RX_PB5 SIM_RST0_PB6 EEPOT_U_D* CONTROL SIM_PD0_PB9 SIM_CLK0_PB7 EEPOT_CS_2 SIM_SVEN0_PB8 SIM_D1RX_PB11 SIM_D1TX_PB10 SIM_PD1_PB15_DSP_DBG_PAW SIM_RST1_PB12_TIO0 TP340 SIM_CLK1_PB13_TIO1_DSP_DBG_YDW KRSIC DATA SIM_SVEN1_PB14_TIO2_DSP_DBG_XDW KRSIC_DB(7:0) 12V_VPP USB_VPP OSC AND ONE WIRE...
Page 321: Hln6837C Astro Spectra Plus Digital/Memory Schematic (Sheet 2 Of 2)
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-65 VCC3.0 R340 L300 BRD_ID0 spare parts VCC3.0 MC74LCX125 R341 U306-1 C300 BRD_ID1 C310 C313 C311 C301 C312 BBP(7:0) 33pF 0.1uF 0.1uF 0.1uF 0.1uF R342 BRD_ID2 U307-4 VCC1.8 SECONDARY_UART(3:0) MC74LCX02 PRIMARY_UART(7:0)
Page 322: Hln6837C Astro Spectra Plus Audio/Dc Discrete Schematic
7-66 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section AUDIO DC BLOCK DISCRETE VCC3.0 VCC3.0 VCC3.0 VCC3.0 U409-2 C441 PWR_GND R403 0.1uF C401 C425 C400 U400 0.1uF U401 VCC3.0 4.7uF 0.1uF MAX5160 MAX5160 EEPOT_CS R402 BCLKR EEPOT_U_D* 100K BCLKT...
Page 323: Hln6837C Astro Spectra Plus Rf Interface Schematic
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-67 R241 R242 5.6K VCC3.0 R245 R240 R243 3.3K R234 Q200 VCC5.0 R250 4.7K ABACUSII L200 DOUT* INTERFACE DOUT 270nH VCC3.0 R213 VCC3.0 Q201 Parallel combinations for KRSIC_DB(7:0) Abacus Interface Resistors KRSIC_DB(7:0) R214...
Page 324: Hln6837C Astro Spectra Plus Secure Schematic
7-68 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section IC Power/GND Supply U307-2 U602-1 3V IN MC74LCX02 MC74HC32A U307-1 U602-2 RESET MC74LCX02 MC74HC32A VCC3.0 VCC3.0 VCC3.0 SSI_CLK_3IN Spare Parts U600-1 U602-5 MC74HC393 U600-3 U601-3 SSI_FS U601-1 PWR_GND U602-4 U602-3...
Page 325: Hln6837C Astro Spectra Plus Vtrans/Usb Schematic
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-69 VCC5.0 TO CONNECTOR VCC3.0 TX-RS232_5 CTS-RS232_5 C500 VOCON TO COMMAND 0.1uF R500 LH-TX_DATA_5 TX-RS232_3 EN_OE1 EN_OE2 BUSY_OUT_5 CTS-RS232_3 U500 LH_RESETO_5 LH-TX_DATA_3 MOSIA_5 BUSY_OUT_3 QSCKA_5 LH_RESETO_3 ROSC-PSC_EN_5 MOSIA_3 SYN_SEL_5 QSCKA_3 VCC5.0...
Page 326: Hln6837C Astro Spectra Plus Vocon Component Location Diagram, Top View
7-70 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section VIEWED FROM SIDE 1 C502 TP407 TP208 R427 U501 U500 U504 U503 R235 R428 U502 R426 R425 R236 Y401 TP603 C424 R606 VR303 VR301 C422 TP330 R315 TP217 TP215 Q301...
Page 327: Hln6837C Astro Spectra Plus Vocon Component Location Diagram, Bottom View
Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-71 VIEWED FROM SIDE 2 TP302 SC400 R209 TP301 C226 C223 U202 C224 R231 C217 J501 C215 R225 R202 C201 C202 L200 TP400 R245 TP209 C402 TP325 R250 R222 R223 R243...
Page 328 7-72 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section HLN6837C ASTRO Spectra Plus VOCON Electrical MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION Parts List PART NUMBER PART NUMBER PART NUMBER MOTOROLA C304 2113743M24 CAP CHIP 100000 PF +80-20%...
Page 329 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-73 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER PART NUMBER R223 0662057M98 RES. CHIP 10K 5% 20X40...
Page 330 7-74 Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section Notes October 28, 2002 6881076C25-D...
Page 331: Vco Section
Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-75 VCO Section C3649 HLD6061D and HLD6062D VHF VCO Hybrid Schematic 6881076C25-D October 28, 2002...
Page 332: Hld6061D And Hld6062D Vhf Vco Hybrid Component Location Diagram
7-76 Schematics, Component Location Diagrams and Parts Lists: VCO Section C3662 C3663 C3664 R3654 L3646 C3681 CR3645 C3660 CR3644 C3668 R3651 CR3643 C3667 Q3644 C3666 L3652 C3670 C3669 C3656 C3655 CR3646 C3654 RT640 MP648 R656 L3649 CR3643 L3645 MP647 JU3602 JU3601 Q3645 C3651...
Page 333 Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-77 HLD6061D and HLD6062D Parts List MOTOROLA ITEM DESCRIPTION PART NUMBER MOTOROLA ITEM DESCRIPTION C3680 2113740B01 CAP CHIP REEL CL1 +/-30 PART NUMBER C3647 thru 2113740B65 CAP CHIP REEL CL1 +/-30...
Page 334: Hld4342B And Hld4343B Vhf Vco Carrier Schematic Diagram
7-78 Schematics, Component Location Diagrams and Parts Lists: VCO Section HLD4342B and HLD4343B VHF VCO Carrier Schematic Diagram October 28, 2002 6881076C25-D...
Page 335: Hld4342D And Hld4343D Vhf Vco Carrier Schematic Diagram
Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-79 HLD4342D and HLD4343D VHF VCO Carrier Schematic Diagram 6881076C25-D October 28, 2002...
Page 336: Hld4342B/Hld4343B Vhf Vco Carrier Component Location Diagram
7-80 Schematics, Component Location Diagrams and Parts Lists: VCO Section C703 L685 C639 R639 C673 C638 C665 R637 L684 R636 C672 C671 C637 C664 JU670 L672 JU671 R700 L671 C668 MP648 R649 L668 L674 MP647 Q643 C662 C675 L675 C646 J642 C674 R680...
Page 337: Hld4342D/Hld4343D Vhf Vco Carrier Component Location Diagram
Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-81 MP648 MP647 C646 J642 R680 C689 C685 Q675 L681 L676 L686 L678 C687 L677 T602 L679 J3641 R664 L665 L664 C655 Q683 C653 R667 R652 L663 R660 R657 T601 Side 1 Side 2 HLD4342D/HLD4343D VHF VCO Carrier Component Location Diagram 6881076C25-D...
Page 338 0611077A94 RES CHIP 6800 5 1/8 10000 C690 2113741N45 CAP CHIP CL2 X7R 10% R637 0611077B07 RES CHIP 22K 5 1/8W MOTOROLA PART C3655 2113740B65 CAP CHIP REEL CL1 +/-30 470 ITEM DESCRIPTION 10000 R639 0611077B15 RES CHIP 47K 5 1/8W...
Page 339 Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-83 MOTOROLA PART MOTOROLA PART MOTOROLA PART ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION NUMBER NUMBER NUMBER C674 - - - - - - - - - - NOTPLACED L679 2405452C87 COIL CHIP INDUCTOR 39...
Page 340: Uhf Vco Ranges 1, 2, 3, And 4 Hybrid Schematic
7-84 Schematics, Component Location Diagrams and Parts Lists: VCO Section L9621 C9615 UHF VCO Ranges 1, 2, 3, and 4 Hybrid Schematic October 28, 2002 6881076C25-D...
Page 341: Hle6101A Uhf Vco Range 1 Hybrid And Hle6102A Range 2 Hybrid Component Location Diagram
Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-85 PIN2C PIN2A PIN2C PIN2A BIAS RF OUT BIAS RF OUT FID1 FID1 MP9638 MP9632 MP9639 MP9636 MP9637 MP9633 MP9632 MP9639 MP9636 MP9637 MP9638 MP9633 C9633 C9633 C9636 C9636 R9639 R9639 C9632 C9632 Q9635...
Page 342 7-86 Schematics, Component Location Diagrams and Parts Lists: VCO Section HLE6101A UHF VCO Range 1 Hybrid and HLE6102A MOTOROLA PART ITEM DESCRIPTION UHF VCO Range 2 Hybrid Parts List NUMBER CR9621 4880006E13 DIODE VAR SI SMBV1050 MOTOROLA PART ITEM DESCRIPTION...
Page 343: Hle6103B Uhf Vco Range 3 Hybrid And Hle6104B Range 4 Hybrid Component Location Diagram
Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-87 C325 C318 C333 C336 L319 MP314 C332 C324 R339 L318 CR317 Q335 C310 R338 R313 CR316 R337 C311 C314 R335 CR326 Q310 L311 RT311 C313 MP328 R311 C321 L332 CR321 R311 C330 CR310...
Page 344 7-88 Schematics, Component Location Diagrams and Parts Lists: VCO Section HLE6103B UHF VCO Range 3 Hybrid and HLE6104B MOTOROLA ITEM DESCRIPTION UHF VCO Range 4 Hybrid Parts List PART NUMBER MP9618 0780299L01 FRAME LEAD J STRAP MOTOROLA ITEM DESCRIPTION &...
Page 345: Uhf Vco Ranges 1, 2, 3, And 4 Schematic Diagram
Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-89 UHF VCO Ranges 1, 2, 3, and 4 Schematic Diagram 6881076C25-D October 28, 2002...
Page 346: Hle6045B Range 1 And Hle6046B Range 2 Uhf Vco Component Location Diagram
7-90 Schematics, Component Location Diagrams and Parts Lists: VCO Section MP9614 MP9613 MP9628 C5652 R5686 J5642 R5698 R5661 C5661 R5631 R5632 L5682 R5630 L5660 R5664 CR5690 C5662 Q5660 C5690 Q5680 C5687 R5694 P602 L5680 L5671 Q5670 R5691 C5693 L5690 CR5691 C5671 J5641 C5694...
Page 347: Hle6000D Range 3 And Hle6041D Range 4 Uhf Vco Component Location Diagrams
Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-91 C5648 C5641 JU5669 MP9614 JU5641 JU5642 JU5643 JU5644 MP9613 MP9628 MP9615 Q5652 Q5653 Q5650 Q5651 C5683 R5682 R5681 R5632 C5699 R5630 R5686 R5684 C5688 Q5640 J5642 R5698 L5681 R5661 C5661 L5682 L5683 R5683...
Page 348 7-92 Schematics, Component Location Diagrams and Parts Lists: VCO Section HLE6000D and HLE6041D UHF VCO Parts List MOTOROLA PART MOTOROLA PART MOTOROLA PART ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION NUMBER NUMBER NUMBER MOTOROLA PART ITEM DESCRIPTION J5642 0980212N03 RECP COAX PCB MOUNT...
Page 349: Hlf6080B 800 Mhz Vco Schematic Diagram
Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-93 (Not Used) HLF6080B 800 MHz VCO Schematic Diagram 6881076C25-D October 28, 2002...
Page 350: Hlf6080B 800 Mhz Vco Component Location Diagram
7-94 Schematics, Component Location Diagrams and Parts Lists: VCO Section Side 2 Side 1 HLF6080B 800 MHz VCO Component Location Diagram October 28, 2002 6881076C25-D...
Page 351 Schematics, Component Location Diagrams and Parts Lists: VCO Section 7-95 HLF6080B 800 MHz VCO Parts List MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION CR690 4880066M01 DIODE SIGNAL RLS4148 R662 - - - - - - - - - -...
Page 352: Rx Front-End Section
7-96 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section RX Front-End Section C3211 CR3201 C3209 C3210 CR3127 CR3126 CR3200 HRD6001E/6002E/6011E/6012E VHF Receiver Front-End Schematic October 28, 2002 6881076C25-D...
Page 353: Hrd6001E/6002E/6011E/6012E Vhf Component Location Diagram
Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section 7-97 RX Front-End Section C3103 C3102 R3101 R3100 T3125 C3126 T3126 R3127 R3126 C3125 C3153 C3100 C3205 C3151 R3209 R3208 C3203 R3201 Q3202 R3205 R3200 C3207 R3202 C3211 C3206 C3210 C3209 Side 1 Side 2...
Page 354 7-98 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section HRD6001E VHF RXFE Parts List HRD6002E Parts List MOTOROLA PART MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION NUMBER PART NUMBER MOTOROLA PART MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION Q3200 & 4880141L01 TSTR PNP SOT23 LO...
Page 355 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section 7-99 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUBER PART NUBER PART NUMBER R3208 0611077A26 RES CHIP 10 5 1/8W C3202 &...
Page 356 7-100 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section MOTOROLA ITEM DESCRIPTION PART NUMBER R3130 0611077A01 RES CHIP JUMPER R3131 & - - - - - - - - - - NOTPLACED R3132 R3200 - - - - - - - - - -...
Page 357: Hrd6001G/6002G/6011G/6012G Vhf Receiver Front-End Schematic
Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section 7-101 J3101 L3204 JU3175 JU3176 JU3177 JU3178 1.165uH *R3131 *R3132 C3205 C3126 R3203 1MEG 1MEG R3130 .01uF 27pF TP11 Q3200 L3126 L3125 R3204 0.117uH 0.117uH JU3179 JU3180 JU3181 JU3182 R3128 R3201 C3152 C3125...
Page 358: Hrd6001G/6002G/6011G/6012G Vhf Receiver Front-End Component Location Diagram
7-102 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section C3103 C3102 R3101 R3100 C3110 C3126 C3109 R3127 R3126 C3125 *R3132 C3108 C3152 C3153 C3205 L3151 C3101 R3209 C3100 R3210 R3208 C3203 R3200 Q3202 Q3201 R3202 C3207 R3205 C3206 C3210 C3209 Side 1...
Page 359 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section 7-103 HRD6001G/HRD6002G/HRD6011G/HRD6012G VHF RXFE MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION Parts List PART NUMBER PART NUMBER PART NUMBER C3203 2113740B49 CAP CHIP REEL CL1 L3125 & 2480140E06...
Page 360: Hre6001B/6002C/6003B/6004B/6011B/6012B/6014B Uhf Receiver Front-End Preamp And Standard Schematics
7-104 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section Front-End-Preamp Front-End-Standard HRE6001B/6002C/6003B/6004B/6011B/6012B/6014B UHF Receiver Front-End Preamp and Standard Schematics October 28, 2002 6881076C25-D...
Page 361: Hre6001B/6002C/6003B/6004B/6011B/6012B/6014B Uhf Receiver Front-End Hybrid Component Location Diagram
Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section 7-105 C132 L125 R128 L127 Q125 R126 C127 R104 C100 C138 C103 Q100 R101 HRE6001B/6002C/6003B/6004B/6011B/6012B/6014B UHF Receiver Front-End Hybrid Component Location Diagram 6881076C25-D October 28, 2002...
Page 362 7-106 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section HRE6011B UHF RXFE Pre-Amp Parts List MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION R103 0611077A62 RES CHIP 330 5 1/8W L126 &...
Page 363 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section 7-107 HRE6001B and HRE6002C UHF RXFE Standard Parts MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION List PART NUMBER PART NUMBER R126 0611077A74 RES CHIP 1000 5 1/8 L128 2480091G21 COIL AIRWOUND...
Page 364: Hrf6004B/C 800 Mhz Receiver Front-End Schematic Diagram
7-108 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section T-line T-line T-line HRF6004B/C 800 MHz Receiver Front-End Schematic Diagram October 28, 2002 6881076C25-D...
Page 365: Hrf6004B/C 800 Mhz Receiver Front-End Component Location Diagram
Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section 7-109 Q8128 C8136 R8131 L8132 RF INPUT FROM DOUBLE/BUFFER R8129 J8350 R8132 IF OUTPUT & DC INPUT Q8127 L8131 L8130 C8134 Q8126 C8129 RF INPUT FROM PRESELECTOR HRF6004B/C 800 MHz Receiver Front-End Component Location Diagram 6881076C25-D October 28, 2002...
Page 366 7-110 Schematics, Component Location Diagrams and Parts Lists: RX Front-End Section HRF6004B/C 800 MHz RXFE Parts List MOTOROLA ITEM DESCRIPTION PART NUMBER C8126 2111078B42 CAP CHIP RF 100 5 NPO 100V C8129 2111059D57 CAP CHIP 21D84873H57 A/I C8130 2111059B11 CAP CHIP 21D84547A11 A/I...
Page 367: Power Amplifier Section
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-111 Power Amplifier Section 63D81085C15-O HLD6022C VHF 50 Watt PA Schematic 6881076C25-D October 28, 2002...
Page 368: Hld6022C Vhf 50-Watt Pa Component Location Diagram, Side 1
7-112 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section Power Amplifier Section HLD6022C VHF 50-Watt PA Component Location Diagram, Side 1 October 28, 2002 6881076C25-D...
Page 369: Hld6022C Vhf 50-Watt Pa Component Location Diagram, Side 2
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-113 HLD6022C VHF 50-Watt PA Component Location Diagram, Side 2 6881076C25-D October 28, 2002...
Page 370 7-114 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLD6022C VHF 50-Watt PA Parts List MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION C3912 2111078B19 CAP CHIP RF 16 5 NPO 100V P0853...
Page 371: Hld6064C Vhf Range 1 And Hld6063D Range 2 100-Watt Pa Schematic
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-115 R3844 63D81085C19-O HLD6064C VHF Range 1 and HLD6063D Range 2 100-Watt PA Schematic 6881076C25-D October 28, 2002...
Page 372: Hld6064C Vhf Range 1 And Hld6063D Range 2 100-Watt Pa Component Location Diagram, Side 1
7-116 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLD6064C VHF Range 1 and HLD6063D Range 2 100-Watt PA Component Location Diagram, Side 1 October 28, 2002 6881076C25-D...
Page 373: Hld6064C Vhf Range 1 And Hld6063D Range 2 100-Watt Pa Component Location Diagram, Side 2
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-117 HLD6064C VHF Range 1 and HLD6063D Range 2 100-Watt PA Component Location Diagram, Side 2 6881076C25-D October 28, 2002...
Page 374 7-118 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLD6064C VHF R1 and HLD6063D R2 100-Watt PA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION Parts List PART NUMBER PART NUMBER PART NUMBER C3881 2111078B59 CAP CHIP RF 470 5 NPO 100V...
Page 375: Hld6032B/Hld6066B Vhf 25-Watt Pa Schematic
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-119 HLD6032B/HLD6066B VHF 25-Watt PA Schematic 6881076C25-D October 28, 2002...
Page 376: Hld6032B/Hld6066B Vhf 25-Watt Pa Component Location Diagram, Side 1
7-120 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLD6032B/HLD6066B VHF 25-Watt PA Component Location Diagram, Side 1 October 28, 2002 6881076C25-D...
Page 377: Hld6032B/Hld6066B Vhf 25-Watt Pa Component Location Diagram, Side 2
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-121 HLD6032B/HLD6066B VHF 25-Watt PA Component Location Diagram, Side 2 6881076C25-D October 28, 2002...
Page 378 7-122 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLD6032B VHF R2 25-Watt PA Parts List HLD6066B VHF R1 25-Watt PA Parts List MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION C3921 &...
Page 379 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-123 MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER C3923 2113740B65 CAP CHIP REEL CL1 +/-30 470 Q3850 4880225C22 TSTR NPN 174MHZ3/30W MRF1946 C3925 2113740B17 CAP CHIP REEL CL1 +/-30 4.7...
Page 380: Hle6062B And Hle6071B Uhf 25-Watt Pa Schematic
7-124 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 63D81085C13-O HLE6062B and HLE6071B UHF 25-Watt PA Schematic October 28, 2002 6881076C25-D...
Page 381: Hle6062B Uhf 25-Watt Pa Component Location Diagram, Side 1
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-125 HLE6062B UHF 25-Watt PA Component Location Diagram, Side 1 6881076C25-D October 28, 2002...
Page 382: Hle6062B Uhf 25-Watt Pa Component Location Diagram, Side 2
7-126 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLE6062B UHF 25-Watt PA Component Location Diagram, Side 2 October 28, 2002 6881076C25-D...
Page 383 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-127 HLE6062B VHF R2 25-Watt PA Parts List MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION C5923 2111078B01 CAP CHIP RF 3.3 .25 NPO 100V...
Page 384: Hle6043C, Hle6044C, And Hle6049B Uhf 40-Watt Pa Schematic
7-128 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 63D81085C14-O HLE6043C, HLE6044C, and HLE6049B UHF 40-Watt PA Schematic October 28, 2002 6881076C25-D...
Page 385: Hle6043C, Hle6044C, And Hle6049B Uhf 40-Watt Pa Component Location Diagram, Side 1
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-129 HLE6043C, HLE6044C, and HLE6049B UHF 40-Watt PA Component Location Diagram, Side 1 6881076C25-D October 28, 2002...
Page 386: Hle6043C, Hle6044C, And Hle6049B Uhf 40-Watt Pa Component Location Diagram, Side 2
7-130 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLE6043C, HLE6044C, and HLE6049B UHF 40-Watt PA Component Location Diagram, Side 2 October 28, 2002 6881076C25-D...
Page 387 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-131 HLE6043C UHF R3 40-Watt Parts List MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION C5894 - - - - - - - - - - NOTPLACED L5904 &...
Page 388 7-132 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER PART NUMBER C5881 2113740B49 CAP CHIP REEL CL1 +/-30 100 L5853...
Page 389 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-133 MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER CR5922 4805119G18 DIODE SMBD1023 STEP R5806 0611077A50 RES CHIP 100 5 1/8W RECOVERY R5807 0611077A82 RES CHIP 2200 5 1/8...
Page 390: Hle6039C, Hle6040C, And Hle6051C Uhf 100-Watt Pa Schematic
7-134 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 63D81085C18-O HLE6039C, HLE6040C, and HLE6051C UHF 100-Watt PA Schematic October 28, 2002 6881076C25-D...
Page 391: Hle6039C, Hle6040C, And Hle6051C Uhf 100-Watt Pa Component Location Diagram, Side 1
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-135 HLE6039C, HLE6040C, and HLE6051C UHF 100-Watt PA Component Location Diagram, Side 1 6881076C25-D October 28, 2002...
Page 392: Hle6039C, Hle6040C, And Hle6051C Uhf 100-Watt Pa Component Location Diagram, Side 2
7-136 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLE6039C, HLE6040C, and HLE6051C UHF 100-Watt PA Component Location Diagram, Side 2 October 28, 2002 6881076C25-D...
Page 393 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-137 HLE6039C UHF R3 100-Watt PA Parts List MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION C5877 & 2111078B13 CAP CHIP RF 10 .5 NPO 100V...
Page 394 7-138 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER PART NUMBER R5907 0611077B11 RES CHIP 33K 5 1/8W C5855 2111078B22...
Page 395 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-139 MOTOROLA MOTOROLA MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER PART NUMBER PART NUMBER R5855 0611077A50 RES CHIP 100 5 1/8W C5823 2113740B24 CAP CHIP REEL CL1 +/-30 9.1...
Page 396 7-140 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER Q5804 4880141L01 TSTR PNP SOT23 LO PROFILE R5881 & 0680194M01 RES 10 OHMS 5% 1W TAPE R5882 Q5805 &...
Page 397: Hlf6078B 800 Mhz 15-Watt Pa Schematic
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-141 63D81085C16-O HLF6078B 800 MHz 15-Watt PA Schematic 6881076C25-D October 28, 2002...
Page 398: Hlf6078B 800 Mhz 15-Watt Pa Component Location Diagram, Side 1
7-142 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section U9850 HLF6078B 800 MHz 15-Watt PA Component Location Diagram, Side 1 October 28, 2002 6881076C25-D...
Page 399: Hlf6078B 800 Mhz 15-Watt Pa Component Location Diagram, Side 2
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-143 HLF6078B 800 MHz 15-Watt PA Component Location Diagram, Side 2 6881076C25-D October 28, 2002...
Page 400 7-144 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLF6078C 800MHz 15-Watt PA Parts List MOTOROLA ITEM DESCRIPTION PARTS NUMBER MOTOROLA ITEM DESCRIPTION L9900 & 2480091G32 COIL AIRWOUND PARTS NUMBER L9920 C9500 2311049A37 CAP TANT CHIP 1 20 20...
Page 401: Hlf6077D 800 Mhz 35-Watt Pa Schematic
Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-145 63D81085C17-O SPECTRA 30W - KITS: HLF6075B AND HLF6087B - PCB:8480156P04 HLF6077D 800 MHz 35-Watt PA Schematic 6881076C25-D October 28, 2002...
Page 402: Hlf6077D 800 Mhz 35-Watt Pa Component Location Diagram, Side 1
7-146 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section Spectra 8480156p04.A HLF6077D 800 MHz 35-Watt PA Component Location Diagram, Side 1 October 28, 2002 6881076C25-D...
Page 403 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section 7-147 HLF6077D 800 MHz 35-Watt PA Component Location Diagram, Side 2 6881076C25-D October 28, 2002...
Page 404 7-148 Schematics, Component Location Diagrams and Parts Lists: Power Amplifier Section HLF6077D 800MHz 35-Watt PA Parts List MOTOROLA MOTOROLA ITEM DESCRIPTION ITEM DESCRIPTION PART NUMBER PART NUMBER MOTOROLA ITEM DESCRIPTION CR9800 4880066M01 DIODE SIGNAL RLS4148 R9801 0611077A74 RES CHIP 1000 5 1/8...
Page 405: Appendix A Secure Modules
HLN1441 DES, DES-XL, DES-OFB NTN1158 DVI-XL NTN1147 DVP-XL NTN1369 DES-XL , DVP-XL NTN1565 DES-OFB, DVP-XL Table A-2. ASTRO Digital Spectra Plus Secure Modules KIT NO. ENCRYPTION TYPE NNTN4024A DES, DES-XL, DES-OFB NNTN4025A DVI-XL NNTN4026A DVP-XL NNTN4027A DES, DES-XL , DES-OFB with DVP-XL Encryption Kit NOTE: The secure module is NOT serviceable.
Page 406: Circuit Description
Secure Modules: Circuit Description Circuit Description The secure module operates from three power supplies (UNSW_B+, SW_B+, and KG_BACKUP). The SW_B+ is turned on and off by the radio’s on/off switch. The UNSW_B+ provides power to the secure module as long as the radio battery is in place. Key variables are loaded into the secure module through connector P1, pin 15.
Page 407: Appendix B Replacement Parts Ordering
Chart in the front of this manual, read the Transceiver Board or VOCON Board note, and include the proper information with your order. Motorola Online Motorola Online users can access our online catalog at https://www.motorola.com/businessonline To register for online access, please call 800-814-0601 (for U.S. and Canada Service Centers only).
Page 408: Telephone Orders
Replacement Parts Ordering Telephone Orders Telephone Orders Customer Care and Services Division* (United States and Canada) 7:00 AM to 7:00 PM (Central Standard Time) Monday through Friday (Chicago, U.S.A.) 1-800-422-4210 (International Orders) 1-847-538-8023 U.S. Federal Government Markets Division (USFGMD) 1-800-826-1913 Federal Government Parts - Credit Cards Only 8:30 AM to 5:00 PM (Eastern Standard Time) Fax Orders Customer Care and Services Division*...
Page 409: Glossary
Glossary Glossary This glossary contains an alphabetical listing of terms and their definitions that are applicable to ASTRO portable and mobile subscriber radio products. Term Definition See analog-to-digital conversion. Abacus IC A custom integrated circuit providing a digital receiver intermediate frequency (IF) backend.
Page 410 Glossary-2 Term Definition See Customer Programming Software. Customer Software with a graphical user interface containing the feature set of an Programming ASTRO radio. See also RSS. Software See digital-to-analog conversion. See digital-to-analog converter. default A pre-defined set of parameters. digital Refers to data that is stored or transmitted as a sequence of discrete symbols from a finite set;...
Page 411 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 412 SPI data line from a peripheral to the MCU. Master Out Slave In SPI data line from the MCU to a peripheral. See microcontroller unit. Motorola Digital Communications. MCU/DSP Interface internal to the Patriot IC. See Megahertz. Megahertz One million cycles per second. Used especially as a radio-frequency unit.
Page 413 Data transmitted on the control channel from the central controller to the word subscriber unit. over-molded pad- A Motorola custom IC package, distinguished by the presence of solder array carrier balls on the bottom pads. over-the-air rekeying Allows the dispatcher to remotely reprogram the encryption keys in the radio.
Page 414 Glossary-6 Term Definition See Push-to-Talk. Push-to-Talk The switch or button usually located on the left side of the radio which, when pressed, causes the radio to transmit. When the PTT is released, the unit returns to receive operation. radio frequency The portion of the electromagnetic spectrum between audio sound and infrared light (approximately 10 kHz to 10 GHz).
Page 415 Glossary-7 Term Definition RPCIC Regulator/power control IC. RPT/TA See repeater/talkaround. See Radio Service Software. See real-time clock. Receive. RX DATA Recovered digital data line. See Serial Audio CODEC Port. SCI IN Serial Communications Interface Input line. Serial Audio CODEC SSI to and from the GCAP II IC CODEC used to transfer transmit and Port receive audio data.
Page 416 Glossary-8 Term Definition Standby mode An operating mode in which the radio is muted but still continues to monitor data. static RAM A type of memory used for volatile, program/data memory that does not need to be refreshed. Synchronous Serial DSP interface to peripherals that consists of a clock signal line, a frame Interface synchronization signal line, and a data line.
Page 417 Glossary-9 Term Definition vocoder An electronic device for synthesizing speech by implementing a compression algorithm particular to voice. See also voice encoder. vocoder/controller A PC board that contains an ASTRO radio’s microcontroller, DSP, memory, audio and power functions, and interface support circuitry. voice encoder The DSP-based system for digitally processing analog signals, and includes the capabilities of performing voice compression algorithms or...
Page 418 Glossary-10 Notes October 28, 2002 6881076C25-D...
Page 419: Index
Index-1 Index Index components 2-1 description 2-7 encryption voltages 3-13 external bus serial communications 3-11 flash programming 3-13 Numerics microcontroller and support ICs 3-8 microphone audio 3-12 800Mhz specifications xliii power-up/-down sequence 3-9 received audio 3-12 regulator and power control IC 3-14 regulators 3-10 ABACUS II IC, receiver back-end 3-7 reset circuits 3-10...
Page 420 Index-2 Spectra A-1 organization 1-1 Spectra Plus A-1 revisions ii encryption voltages, command board 3-13 MCU system clock errors Spectra 3-28 09/10 A-2 Spectra Plus 3-44 09/90 A-2 microcontroller and support ICs, command board 3-8 power-up self-check microphone audio, command board 3-12 Spectra 4-2 mode Spectra Plus 4-10...
Page 421 Index-3 description 3-55 description 2-7 troubleshooting DSP system clock 800 MHz band 4-66 Spectra 3-28 UHF band 4-47 Spectra Plus 3-44 VHF band 4-21 MCU system clock UHF band Spectra 3-28 40-Watt 3-72 Spectra Plus 3-44 high-power 3-68 power-up/power-down sequence VHF band Spectra 3-28 25/10-Watt 3-59...
Page 422 Index-4 Spectra 3-28 Spectra Plus 3-44 schematics power-up/power-down sequence listing 7-1 Spectra 3-28 troubleshooting 7-1 Spectra Plus 3-46 second VCO, synthesizer 3-6 RX signal path secure modules Spectra 3-18 circuit description A-2 Spectra Plus 3-41 Spectra A-1 serial peripheral interface (SPI) bus Spectra Plus A-1 Spectra 3-24 secure operations...
Page 423 Index-5 VOCON Plus board assembly 2-1 voltage control oscillator (VCO) 800 MHz band 3-50 UHF specifications xlii description 3-47 UHF band 3-48 VHF band 3-47 voltage regulators, Spectra Plus 3-45 vacuum fluorescent voltage-controlled oscillator (VCO) assembly display driver 2-3 800 MHz radios 2-7 voltage source 2-3 description 2-6 VCO (voltage-controlled oscillator assembly) 2-6...
Page 424 Index-6 Notes October 28, 2002 6881076C25-D...
Page 425 Motorola, Inc. 8000 West Sunrise Boulevard Ft. Lauderdale, FL 33322 MOTOROLA, the Stylized M Logo, ASTRO and Spectra are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their respective owners.
Page 426 Motorola, Inc. 8000 West Sunrise Boulevard Ft. Lauderdale, FL 33322 MOTOROLA, the Stylized M Logo, ASTRO, and Spectra are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their respective owners.

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Astro digital spectra

Motorola ASTRO Digital Spectra Plus Service Manual

Foreword

Commercial Warranty

Model Numbering, Charts, and Specifications

Chapter 1 Introduction

Chapter 2 General Overview

Chapter 3 Theory of Operation

Chapter 4 Troubleshooting Procedures

Quick Links

Troubleshooting

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