Ericsson ALLEGRA EDACS Maintenance Manual
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Ericsson ALLEGRA EDACS Maintenance Manual

Ericsson ALLEGRA EDACS Maintenance Manual

800 mhz duplex portable
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Maintenance Manual
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ALLEGRA - EDACS
800 MHz DUPLEX PORTABLE
Ericsson Inc.
Private Radio Systems
Mountain View Road
Lynchburg, Virginia 24502
1-800-528-7711 (Outside USA, 804-528-7711)
AE/LZB 119 1645 R1B
Printed in U.S.A.

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Summary of Contents for Ericsson ALLEGRA EDACS

  • Page 1 Maintenance Manual ® ALLEGRA - EDACS 800 MHz DUPLEX PORTABLE Ericsson Inc. Private Radio Systems Mountain View Road Lynchburg, Virginia 24502 AE/LZB 119 1645 R1B 1-800-528-7711 (Outside USA, 804-528-7711) Printed in U.S.A.

  • Page 2: Table Of Contents

    This manual is published by Ericsson Inc., without any warranty. Improvements and changes to this manual necessitated by typographical errors, inaccuracies of LOGIC BOARD ...............................18 current information, or improvements to programs and/or equipment, may be made by Ericsson Inc., at any time and without notice. Such changes will be RF BOARD ................................21 incorporated into new editions of this manual.

  • Page 3: Transmitter

    EDACS Standby 105 ma environments. The ALLEGRA EDACS radio is available in two Transmit 750 ma (high power) In addition to the 50 number memory, the ALLEGRA duplex models: Interconnect only or Interconnect/Dispatch. A wide portable radio allows several time-out options to accommodate variety of options and accessories are available.

  • Page 4: Controls And Indicators

    32K x 8 RAM (D707) for tempo- Device address decoding is accomplished by a simulated rary data storage, and an Ericsson ASIC modem chip (D702). 74HC138 within the modem ASIC. Addresses A15, A14, and It controls the Audio Signal Processor (ASP) (D601), a The 20 button keypad, and internal speaker and a liquid A13 are brought into the ‘C,’...
  • Page 5 AE/LZB 119 1645 R1B a packaged protocol from the microprocessor’s serial port, (B801). It can generate any of the sixteen tone combinations line for the transmit side is LTX (P5.3). The timing of these transistor V803 off which in turn keeps NPN transistor V805 keep the watchdog occupied, and implement the prom manu- under control of the microprocessor.
  • Page 6 AE/LZB 119 1645 R1B then rectified. This voltage is compared with a voltage supplied The output of the comparator, LCGO (pin 22) is applied to CGIN is connected directly to the common summing junction (TP162) and VTX2 (TP164) to the transmitter circuitry: under software control, D/A.

  • Page 7: Logic Board Test Procedure

    50 Ma of current. Current from the provided by mixer Q531. Q531 combines the Rx Synthesizer Ericsson Dealer for factory repairs. supply must be under 150 Ma output with the antenna signals to generate the 1st. IF fre- Rxd (TQ3370 to quency.
  • Page 8 AE/LZB 119 1645 R1B Table 2. Test Mode Functions Test Mode Code Function Test Mode Code Function (01) Select Channel (19) Enable/Disable The Busy Tone Filter (02) Select Frequency (1A) Enable/Disable The Busy Tone Filter (03) Toggle Transmitter On/Off (1B) Initialize The Asp To A Known State (04) Toggle Receive Audio On/Off...

  • Page 9: Memory Tests

    AE/LZB 119 1645 R1B Test the alert tone by sending the following sequence MEMORY TESTS: Table 3.Tracking Data Address For Test Mode Commands 20 & 21 to the logic board: 00 High Power - Low Split 04 High Power - Mid Split 08 High Power -High Split Run the Xram test by sending a 26h command to the 09 01...

  • Page 10: Standard Battery Removal And Insertion

    AE/LZB 119 1645 R1B board, carefully align the connector (16-pin) while also Unsolder the component by heating one pad and using a PROGRAMMING THE RADIO aligning the PTT button. solder sucker to remove the solder. Then apply heat to the other pad and lift the component from the board. Refer to programming manual TQ3373 when program- Place back cover (tilted top to top) and lower onto back;...
  • Page 11 AE/LZB 119 1645 R1B IC DATA D601 - Audio Signal Processor (ASP) Functional Block Diagram Pin Out Diagram D701 8-Bit Microprocessor (RYS 105 402 R1A) RON 107 603 R1 N602, Notch Filter D605, Compandor RYT 114 6006/1 RYT 101 6119/2C Lead Identification Lead Identification &...
  • Page 12 AE/LZB 119 1645 R1B IC DATA D701 8-Bit Microprocessor D703, Flash Memory 128 x 8 RON 107 603 R1 RYT 118 038/6C Functional Block Diagram Lead Identification & Pin Out Functional Block Diagram D702, Custom Modem RON 107 603 R1 Lead Identification LOGIC BOARD (ROA 117 2224)
  • Page 13 AE/LZB 119 1645 R1B IC DATA U707, Static RAM, High Speed: 32768 x 8-Bit U711, NAND Gate, Quad Functional Block Diagram Pin Out RYT 119 6005/6C RYT 306 2001/C D712, NAND Gate, Quad Symbol Function Lead Identification RYT 306 6056/C AO-A14 Adress Lead Identification...
  • Page 14 AE/LZB 119 1645 R1B IC DATA U101, Radio Interface Controller - Bertram Functional Block Diagram Pin Out Descriptions RYT 312 6027/C Signal Function Signal Function Signal Function Lead Identification OSCI Oscillator Input TONE Single or Dual Positive Supply Tone Out. OSCO Oscillator Output Slave Addr;...
  • Page 15 AE/LZB 119 1645 R1B IC DATA U320, U420 Frequency Synthesizer, 1.1 GHz U410, Voltage Controlled Oscillator, 925-950 MHz U430, Wideband Amplifier RYT 102 6007/2C RTL 402 653/01 RYT 101 6089/2C Lead Identification Block Diagram Lead Identification Pin Descriptions TERM SYMBOL FUNCTION Input Ground...

  • Page 16: Parts List

    AE/LZB 119 1645 R1B PARTS LIST Allegra Radio SYMBOL PART NO. DESCRIPTION SYMBOL PART NO. DESCRIPTION SYMBOL PART NO. DESCRIPTION DY101 - Duplex, Interconnect Only Ceramic: 220 pF ±5%, 50 VDCW. C722 RJC4633033/22 V849 RKZ12303/1 Diode, surface mount, reverse voltage: 70 volts. R650 REP623646/1 Resistor, chip: 100K Ohms, 1%, 50 wvdc, .06w.

  • Page 17: Miscellaneous Parts

    AE/LZB 119 1645 R1B PARTS LIST SYMBOL PART NO. DESCRIPTION SYMBOL PART NO. DESCRIPTION SYMBOL PART NO. DESCRIPTION SYMBOL PART NO. DESCRIPTION Ceramic: 33 pF ±5%, 50 VDCW, temp coef 0 ±30 PPM. R852 REP623645/33 Resistor, chip: 33K Ohms, 1%, 50 wvdc, .06w. C201 19A149897P9 Ceramic, 3.3 pF ±0.25 pF, temperature compensating.

  • Page 18: Production Changes

    AE/LZB 119 1645 R1B PARTS LIST & PRODUCTION CHANGES ASSEMBLY DIAGRAM MISCELLANEOUS PARTS SYMBOL PART NO. DESCRIPTION RADIO CASE ASSEMBLY R330 (Refer to 151-88-KRD-103 109) Resistor, metal o xide: 5.6K ohms ±1%. R331 REP623644/56 SYMBOL PART NO. DESCRIPTION R332 REP623643/1 Resistor, metal oxide: 100 ohms ±1%.
  • Page 19 AE/LZB 119 1645 R1B OUTLINE DIAGRAM SCHEMATIC DIAGRAM LOGIC BOARD LOGIC BOARD ASSEMBLY ROA 117 2224 1078 ROA 117 2224 (1911-ROA 117 2224 Sh. 1, Rev. B)

  • Page 20: Logic Board

    AE/LZB 119 1645 R1B SCHEMATIC DIAGRAM LOGIC BOARD ROA 117 2224 (1911-ROA 117 2224 Sh. 2, Rev. B)
  • Page 21 AE/LZB 119 1645 R1B SCHEMATIC DIAGRAM LOGIC BOARD ROA 117 2224 (1911-ROA 117 2224 Sh. 3, Rev. B)
  • Page 22 AE/LZB 119 1645 R1B ASSEMBLY DIAGRAM RF BOARD ASSEMBLY ROA 117 2224 (188D6249 Sh. 1, Rev. 4)

  • Page 23: Rf Board

    AE/LZB 119 1645 R1B SCHEMATIC DIAGRAM RF BOARD ROA 117 2229 (188D6251 Sh.1, Rev. 1)

  • Page 24: Rf Board

    AE/LZB 119 1645 R1B SCHEMATIC DIAGRAM RF BOARD ROA 117 2229 (188D6251 Sh.2, Rev. 1)
  • Page 25 AE/LZB 119 1645 R1B SCHEMATIC DIAGRAM RF BOARD ROA 117 2229 (188D6251 Sh.3, Rev. 1)
  • Page 26 AE/LZB 119 1645 R1B SCHEMATIC DIAGRAM RF BOARD ROA 117 2229 (188D6251 Sh.4, Rev. 1)
  • Page 27 AE/LZB 119 1645 R1B SCHEMATIC DIAGRAM RF BOARD ROA 117 2229 (188D6251 Sh.5, Rev. 1)
  • Page 28 AE/LZB 119 1645 R1B This page intentionally left blank...

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