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Ericsson EDACS Monogram Series Maintenance Manual

Ericsson edacs monogram series trunking portable radio 800 mhz
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Download this manual See also: Operator's Manual, Installation Manual
Maintenance Manual
MONOGRAM SERIES
® ®
EDACS
Trunking Portable
800 MHz

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Summary of Contents for Ericsson EDACS Monogram Series

  • Page 1 Maintenance Manual MONOGRAM SERIES ® ® EDACS Trunking Portable 800 MHz...
  • Page 2 Ericsson Inc., at any time and without notice. Such changes will be incorporated into new editions of this manual. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the express written permission of Ericsson Inc.

  • Page 3: Table Of Contents

    AE/LZB 119 1647 R1A TABLE OF CONTENTS Page SPECIFICATIONS............................3 INTRODUCTION ............................9 STANDARD RADIO FEATURES ......................9 Carrier Control Timer (CCT)......................9 Audio Alert Beeps ..........................9 Low Battery Alert ..........................9 Power Up Self Test ..........................9 CONVENTIONAL FEATURES ....................... 9 Manual DTMF Operation ........................
  • Page 4 AE/LZB119 1647 R1A Idle Mode............................14 Wait Mode ............................14 Ready Mode ............................14 GLOSSARY OF GE-MARC TERMS .......................15 Idle Mode............................15 Wait Mode ............................15 Ready Mode ............................15 Busy Tone ............................15 Acquisition Tone..........................15 Collect Tone............................15 Group/Individual Tones ........................16 RADIO OPERATION............................16 USER INTERFACE...........................16 Turning The Radio ON/OFF .......................16 ALERT TONES ..............................16 EDACS APPLICATIONS .........................16 GE-MARC APPLICATIONS ........................17...
  • Page 5 AE/LZB 119 1647 R1A CIRCUIT ANALYSIS ............................20 MICRO CONTROLLER U701 ......................... 20 Operating Program..........................21 Clock Circuitry ........................... 21 Display Interfacing..........................21 RF Board Interfacing .......................... 21 Audio Signal Processor Control......................21 Address Demultiplexing ........................21 Address Decoding and Processor Control Outputs ................22 FLASH EEPROM U703..........................
  • Page 6 AE/LZB119 1647 R1A MICROPHONE AND SPEAKER ......................28 INTERNAL/EXTERNAL SPEAKER/MIC. SWITCH ................28 DISASSEMBLY ...............................28 FRONT PANEL ASSEMBLY REMOVAL AND REPLACEMENT ............28 To remove the front panel assembly: ....................28 To replace the front panel assembly:....................28 DIGITAL PRINTED CIRCUIT BOARD REMOVAL AND REPLACEMENT ........29 To remove the Printed Circuit Board: ....................29 MICROPHONE AND SPEAKER REMOVAL AND REPLACEMENT ..........29 To remove the microphone and speaker:.....................29...

  • Page 7: Specifications

    AE/LZB 119 1647 R1A SPECIFICATIONS Input Voltage: 7.5 VDC (Nominal) Dimensions (Typical) (HxWxD): Less Antenna 7” x 2.5” x 1.5” (17.78 x 6.35 x 3.81 cm) Weight Radio with Medium Capacity Battery: 23.03 oz (653 g) Ambient Temperature Range: -22°F to +140°F (-30°C to +60°C) Relative Humidity: 95% at 122°F (50°C)
  • Page 8 AE/LZB119 1647 R1A SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS U.S. Military Spec 810C U.S. Military Spec 810D Standard Methods & Procedures Methods & Procedures Low Pressure 500.1/1 500.2/1,2 High Temperature 501.1/1 501.2/1,2 Low Temperature 502.1/1 502.2/2 Temperature Shock 503.1/1 503.2/1 Solar Radiation 505.1/1 505.2/2 Humidity 507.1/2...

  • Page 9: Conventional Features

    AE/LZB 119 1647 R1A STANDARD RADIO FEATURES INTRODUCTION Carrier Control Timer (CCT) The EDACS Monogram Portable Radio is a rugged, lightweight unit which is housed in a molded Lexan front The CCT is programmable on a per channel basis and assembly and an aluminum rear casting.
  • Page 10 350 475 750 153 630 533 551 104 557 254 314 706 472 623 725 267 342 075 501 647 726 176 417 037 560 562 645 370 554 231 504 636 745 NOTE: Primary codes in bold are unique Ericsson codes.

  • Page 11: Trunked Features (Edacs/Gemarc)

    AE/LZB 119 1647 R1A TRUNKED FEATURES (EDACS/GEMARC) EDACS (ONLY) FEATURES Preprogrammed DIG/DTMF Numbers Group Scan During the PC programming of the radio, the special The radio monitors the control channel and responds to call list may be programmed with up to 96 numbers for all group channel assignments associated with the "scan"...

  • Page 12: System Description

    AE/LZB119 1647 R1A The typical system configuration consists of at least 2 Emergency (Optional) repeater stations (with a maximum number of 25) and the An "Emergency" message is initiated by the caller and associated mobiles and portables. One repeater always is a automatically transmitted by the radio on the control control channel dedicated to sending out continuous control channel.

  • Page 13: Conventional Mode

    AE/LZB 119 1647 R1A are assigned the same tones so that any unit can talk to all CONVENTIONAL MODE other units in the same group. A block diagram of the GE- In conventional mode (not trunked) the radio can MARC is shown in Figure 2. operate either with tone Channel Guard, digital Channel When originating a call, the radio identifies an idle Guard, or carrier squelch, depending on personality...

  • Page 14: Idle Mode

    AE/LZB119 1647 R1A If a channel with no busy tone is found, the radio Operational Modes transmits a burst of busy tone to acquire the repeater. The The radio will always be in one of three operational repeater then responds with a burst of acquisition tone. modes: Idle, Wait, or Ready.

  • Page 15: Glossary Of Ge-Marc Terms

    AE/LZB 119 1647 R1A Figure 4 - Signal Timing kHz deviation continuously. This tone is filtered out of the GLOSSARY OF GE-MARC TERMS received audio and is used to hold the communication channel active. It also excludes other radios from using the Idle Mode channel when a call is active.

  • Page 16: Group/Individual Tones

    AE/LZB119 1647 R1A Group/Individual Tones Turning The Radio ON/OFF Group/Individual Tones chosen from the 34 standard radio turned rotating frequencies follow the collect tone. In a two-tone call, the ON/OFF/VOLUME control clockwise from the OFF detent second tone is sent for 450 milliseconds. In a four-tone call, position.

  • Page 17: Ge-Marc Applications

    AE/LZB 119 1647 R1A programming, the radio retries at 5 SYSTEM BUSY If you press the PTT key and hear three second intervals up to 15 times unless short, medium-pitched tones, this END is pressed, a channel is acquired, indicates that the receiving party is or an out-of-range condition occurs.

  • Page 18: Keypad Lock

    AE/LZB119 1647 R1A KEYPAD LOCK CIRCUIT ANALYSIS The keypad can be locked at any time to prevent RECEIVER SECTION undesired key presses. To lock the keypad when it is in the unlocked state, press and release the LOCK (shifted The radio receiver section consists of a double key.

  • Page 19: 2Nd Mixer And Detector

    AE/LZB 119 1647 R1A 2nd Mixer and Detector PLL CIRCUIT DESCRIPTION The received IF signal of 45.3 MHz is supplied to the VCO and Buffer Amplifier 2nd mixer via U101 pin 16. Here it is mixed with the 2nd L.O. signal of 45.755 MHz and converted to the 2nd IF The VCO generates frequencies of 806-824 MHz in frequency of 455kHz.

  • Page 20: Pll Ic (U105) And Loop Filter

    AE/LZB119 1647 R1A Power Switching and Voltage Regulator PLL IC (U105) AND LOOP FILTER The frequency synthesizer consists of a single loop U109 and U110 provide a regulated +5Vdc to the RF phase locking circuit with a reference frequency of 12.5 Board.

  • Page 21: Operating Program

    AE/LZB 119 1647 R1A • The PSEN (Program Store Enable) output at U701 pin 54 GE-MARC trunking functions also runs continuously at 1.8432 MHz except when U701 • accesses external memory. conventional portable radio functions • Display Interfacing synthesizer loading and lock monitoring Interfacing between micro controller U701 and the •...

  • Page 22: Address Decoding And Processor Control Outputs

    AE/LZB119 1647 R1A The ALE output line from U701 is applied to U702 pin The micro controller uses the A15 ENBL line (U701 12. The lower address byte (A0-A7) is latched when the pin 36) during flash programming to isolate writes to U703. ALE line transitions from high to low.

  • Page 23: High-Speed Data Conversions

    AE/LZB 119 1647 R1A • • 11.0592 MHz clock generation for itself, the micro if the watchdog timer circuit in U702 times out controller and the ASP. • if the +5Vdc regulated supply from U801 falls out of regulation. High-Speed Data Conversions This active-high reset pulse is inverted by Q703 and Modem U702 converts high-speed EDACS data applied to the active-low reset inputs of the micro controller...

  • Page 24: Audio Signal Processor U804

    NOTE limited noise out of the modems receive data input. If replacement of U706 serial number ROM or U104 personality EEPROM is necessary contact Ericsson Transistor Q601 on the RX AUDIO line allows the Technical Assistance Center to obtain programming high-speed and low-speed data limiters to settle quickly after information.

  • Page 25: Ge-Marc Tone Decoding

    AE/LZB 119 1647 R1A standard 3052 Hz busy tone or the alternate 2918 Hz busy pass filter (7.5 KHz). In the ASP, the high-pass filtered tone. audio is rectified and sent out on U804 pin 52. The rectified noise is filtered by C612 (and C611 if Q604 is on) to The output of the notch filter is U602 pin 9 (VOUT) provide an average dc level proportional to receiver noise which is feed to U804 pin 28.

  • Page 26: Transmit Audio Paths

    AE/LZB119 1647 R1A Transmit Audio Paths WB2 Walsh bit outputs. These two bits are also used to generate GE-MARC signaling tones as described in the The microphone receives a dc bias through R315. Mic following section entitled "GE-MARC SIGNALING TONE audio is coupled into U804 pin 74 via J901 pin 3, U604.B, ENCODING".

  • Page 27: Dtmf Tone Encoding

    AE/LZB 119 1647 R1A The tones then follow the same path in the ASP as CG The Display Board contains the following major items. tones/data. • Liquid Crystal Display Module (L.C.D.) DTMF Tone Encoding • IIC Liquid Crystal Display Driver Encoder U106 of the display board generates DTMF •...

  • Page 28: Personality Eeprom U104

    AE/LZB119 1647 R1A Another function of the Display Board is to provide INTERNAL/EXTERNAL SPEAKER/MIC. backlighting of the LCD module using an electroluminescent SWITCH panel. The panel is controlled by the backlight line, a logic switch output from the Audio Signal Processor (ASP) U804- When the external Speaker/Mic.

  • Page 29: Digital Printed Circuit Board Removal And Replacement

    AE/LZB 119 1647 R1A DIGITAL PRINTED CIRCUIT BOARD KEYPAD BOARD REMOVAL AND REMOVAL AND REPLACEMENT REPLACEMENT To remove the Printed Circuit Board: To remove the Keypad Board: Using a Phillips head screwdriver (No. 1) remove the Remove the RF shield and Digital Printed Circuit four (4) screws which hold the RF shield to front panel Board.

  • Page 30: Ptt Switch Assembly Removal And Replacement

    AE/LZB119 1647 R1A 10. With the controls to the left and surface mounted Remove PTT assembly. components to the top, grasp the frame with your left hand. Gently lift while tilting the RF board as it is To replace PTT assembly, reverse the procedures removed from the assembly.
  • Page 31 AE/LZB 119 1647 R1A Symptom Probable Cause Corrective Action 1. On/off switch is defective. 1. Replace on/off switch. 2. Power supply fuse (F101) is 2. Replace fuse. Radio appears dead. defective. 3. Replace bad regulator. 3. Bad 5V regulator (U109,110,801) 4.
  • Page 32 AE/LZB119 1647 R1A Symptom Probable Cause Corrective Action 1. Defective antenna switch (U102). 1. When receiving pin 4 of U102 should be 0 volts. 2. Defective front-end filter If not check TX/RX switch. (F101,102). 2. Replace defective filter. Low sensitivity. 3.
  • Page 33 AE/LZB 119 1647 R1A Symptom Probable Cause Corrective Action 1. P.A. control signal error. 1. Base of Q111 should be low during transmit if 2. P.A. ramp signal error. not the problem is on the digital board. Low or no transmitting 3.

  • Page 34: Voltage Chart

    AE/LZB119 1647 R1A VOLTAGE CHART This voltage chart was measured under the following conditions: A) Power supply voltage = 7.5 Vdc B) Receive frequency = CH# 300 ( conventional with no channel guard) C) Transmit frequency = CH# 300 (conventional no channel guard) D) PLL condition = locked E) Voltage dimension = Average DC Transistors...
  • Page 35 AE/LZB 119 1647 R1A IC’S U101 U102 U103 U104 U105 PIN # UNSQ 4.43 4.43 3.60 3.48 3.73 3.73 6.32 2.08 3.57 3.57 6.51 2.08 4.48 4.48 1.57 6.51 7.95 7.75 3.50 3.50 3.50 3.50 13.19 12.16 3.50 3.50 4.50 4.50 6.88 1.74...
  • Page 36 AE/LZB119 1647 R1A AUDIO SIGNAL PROCESSOR (U801) PIN # PIN DESCRIPTION VOLTAGE Busy Filter Bypass 0 = Busy Tone Decode 5 = Wide Band Decode Backlight 0 = off 5 = on Carrier Activity Sensor 0 = Carrier Detected 5 = No Carrier Detected RX Audio Output 600 mV 1kHz tone, 3kHz deviation CG Tones...

  • Page 37: Battery Charging And Care

    AE/LZB 119 1647 R1A If the battery is to be charged on the radio, ensure that BATTERY CHARGING AND CARE the power switch on the radio is in the off position before charging. Failing to turn the power switch to off during the charge cycle will result in a less than full charge condition, which will noticeably reduce the operating time between charges!

  • Page 38: Parts List

    AE/LZB119 1647 R1A PARTS LIST Prefix the part number with “R29/” when ordering replacement parts PART NO. NAME & DESCRIPTION COMPONENT 550-020-0003 FRONT BEZEL ASSY DIGITAL BOARD RF SHIELD (+) TAPPING SCREW (BH) T2X4-2S ZN-PLAT SPK. MTG. BRACKET (SPEAKER) SPC T0.8 NI-PLAT GASKET SILI.

  • Page 39: Parts List

    PARTS LIST AE/LZB 119 1647 R1A PART NO. NAME & DESCRIPTION COMPONENT DIGITAL BOARD SHIELD (G.E.) CHIP RESISTOR 0 1/16W 5% T 1608 R(20),22,23,313,889 CHIP RESISTOR 10 1/16W 5% T 1608 R725,736,737,738,739,830 CHIP RESISTOR 100 1/16W 5% T 1608 R752 CHIP RESISTOR 1K 1/16W 5% T 1608 R305,604...
  • Page 40 AE/LZB119 1647 R1A PARTS LIST PART NO. NAME & DESCRIPTION COMPONENT CHIP CERAMIC 220pF GRM39COG221J 50V PT C501,502,503,701,702,705,706,707,711,712 ,713,714 C715,717,718,719,725,730,732,736,737,740 C741,743,744,745,746,747,748,749,750,752 ,777,778 CHIP CERAMIC 33pF GRM39COG330J 50V PT C739,754,755,756 CHIP CERAMIC 330pFGRM39COG331J 50V PT C308 CHIP CERAMIC 0.0047uF GRM40X7R472K 50V C628 CHIP CERAMIC 470pF GRM40COG471J 50V PT C606,733...
  • Page 41 PARTS LIST AE/LZB 119 1647 R1A PART NO. NAME & DESCRIPTION COMPONENT (+) MACHINE SCREW (PH) M2.6X8 NI-PLAT PWR MODULE MTG. (+) MACHINE SCREW (BH) M2X4 ZN-PLAT RF PCB MTG:2 (+) MACHINE SCREW (FH) M2X5 NI-PLAT MAIN SLIDER MTG:4 NUT RING M7X0.75(P) &9.5 BSBM VOL.
  • Page 42 AE/LZB119 1647 R1A PARTS LIST PART NO. NAME & DESCRIPTION COMPONENT 18K:MCR10EZH183J CHIP RES R143,144,157 22:MCR10EZH220J CHIP RES R125,158 220:MCR10EZH221J CHIP RES R109 22K:MCR1OEZH223J CHIP RES R128 2.4K:MCR10EZH242J CHIP RES R151 2.7K:MCR10EZH272J CHIP RES R136,138 27K:MCR10EZH273J CHIP RES R106 330:MCR10EZH331J CHIP RES R149,150 3.3K:MCR10EZH332J...
  • Page 43 PARTS LIST AE/LZB 119 1647 R1A PART NO. NAME & DESCRIPTION COMPONENT 10UF : 293D106X0010B2T10V TANTALUM C188,189 100uF: 293D107X0006E2T6V TANTALUM C184 0.33UF: 293D334X0035A2T35V TANTALUM C123,156 3.3UF: 293D335X0010A2T10V TANTALUM C122 4.7UF: 293D475X0010A2T10V TANTALUM C163,166 47UF: 293D476X06R3C2T6.3V TANTALUM C187 .68uF :GRM40X7R684K 50V PT C152 TRANSISTOR BC858 SOT-23 Q102...
  • Page 44 AE/LZB119 1647 R1A PARTS LIST PART NO. NAME & DESCRIPTION COMPONENT 0.5PF:GRM40COG0R5C 50V PT CERAMIC CHIP C304 100PF:GRM40COG101J 50V PT CERAMIC CH C310 1.5PF:GRH708COG1R5C 50V PT CERAMIC CH C306,307 2.2PF :GRM40COG2R0C 50V PT C303 220PF:GRM40COG221J 50V PT CERAMIC CH C302,311 3PF:GRH708COG030C 50V PT CERAMIC CH C309 4.7PF :GRM40COG4R7C 50V PT CERAMIC CH...

  • Page 45: Component Pinout

    AE/LZB 119 1647 R1A COMPONENT PINOUT (780-202-0009, Sh. 1, Rev. A)
  • Page 46 AE/LZB119 1647 R1A COMPONENT PINOUT (780-202-0009, Sh. 2, Rev. A)

  • Page 47: System Wiring Diagram

    AE/LZB 119 1647 R1A SYSTEM WIRING DIAGRAM (930-010-0002, Rev. A)

  • Page 48: Keypad/Display Board Service Outline

    AE/LZB119 1647 R1A SERVICE OUTLINE KEYPAD/DISPLAY BOARD (930-010-0002, Rev. A)

  • Page 49: Ptt Switch Board

    SCHEMATIC DIAGRAM AE/LZB 119 1647 R1A PTT SWITCH BOARD 650-180-0001 (S1800001, Rev. A)

  • Page 50: Keypad/Digital Board

    AE/LZB119 1647 R1A SCHEMATIC DIAGRAM KEYPAD/DISPLAY BOARD 650-170-0001 (S1700001, Rev. A)

  • Page 51: Rf Board

    AE/LZB 119 1647 R1A RF BOARD 650-020-0002 (770-020-0002, Rev. D)

  • Page 52: Digital Board (2 Sheets)

    AE/LZB 119 1647 R1A DIGITAL BOARD 650-010-0003 (770-010-0003, Sh. 1, Rev. E)
  • Page 53 AE/LZB 119 1647 R1A DIGITAL BOARD 650-010-0003 (770-010-0003, Sh. 2, Rev. E)

  • Page 54: Block Diagram

    AE/LZB 119 1647 R1A BLOCK DIAGRAM (060-010-0001, Rev. B)
  • Page 55 AE/LZB 119 1647 R1A This page intentionally left blank...
  • Page 56 Ericsson Inc. Private Radio Systems Mountain View Road Lynchburg, Virginia AE/LZB 119 1647 R1A 1-800-528-7711 (Outside USA, 804-528-7711) Printed in U.S.A.

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