Ericsson LBI-39015B Maintenance Manual
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Ericsson LBI-39015B Maintenance Manual

Ericsson LBI-39015B Maintenance Manual

Mdx vhf mobile radio
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LBI-39015B
Maintenance Manual
MDX™
VHF MOBILE RADIO
TABLE OF CONTENTS
RF BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . LBI-39019
SYSTEM BOARD . . . . . . . . . . . . . . . . . . . . . . LBI-38842
AUDIO/LOGIC BOARD . . . . . . . . . . . . . . . . . . . LBI-39016
AUDIO AMPLIFIER BOARD . . . . . . . . . . . . . . . . LBI-38844
FRONT CAP ASSEMBLY . . . . . . . . . . . . . . . . . . LBI-38850
PA BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . LBI-31921
SERVICE SECTION . . . . . . . . . . . . . . . . . . . . . LBI-39020
Ericsson Inc.
Private Radio Systems
Mountain View Road
Lynchburg, Virginia 24502
1-800-528-7711 (Outside USA, 804-528-7711)
Printed in U.S.A.

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Summary of Contents for Ericsson LBI-39015B

  • Page 1 LBI-39015B Maintenance Manual MDX™ VHF MOBILE RADIO TABLE OF CONTENTS RF BOARD ......LBI-39019 SYSTEM BOARD ..... . LBI-38842 AUDIO/LOGIC BOARD .

  • Page 2: Specifications

    TRANSMITTER may be made by Ericsson Inc., at any time and without notice. Such changes will be incorporated into new editions Frequency Range of this manual. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or...
  • Page 3 LBI-39015 SPECIFICATIONS* - Cont. Continued Audio Sensitivity 110 mV RMS (typical) STANDARD METHODS PROCEDURES Spurious and Harmonics Less than -16 dBm Mechanical Shock 516.2/Proc 1 516.3/Proc 1-6 516.4/Proc 1-6 Audio Distortion 5% maximum Humidity 507.1 507.2 507.3 ±5 kHz (Maximum) Modulation Limiting Salt Fog 509.1/Proc 1...

  • Page 4: Accessories And Options

    LBI-39015 DESCRIPTION Synthesizer sizer and sends and receives data to/from another microproc- PC PROGRAMMED OPTIONS essor on the Display Board for the alphanumeric LED dis- play. The synthesizer circuit generates all transmit and receive The VHF MDX™ Mobile Radio is a synthesized, wide Carrier Control Timer (CCT) RF frequencies.

  • Page 5: Radio Operation

    RECEIVER SCAN RATE NOTE: ceived. The option connects to Pin 13 of cable option Primary codes in bold are unique Ericsson codes. PMCD7Z (19C851585P14) and is enabled through the front The scan rate for the radio will vary depending upon the panel switch.
  • Page 6 LBI-39015 Scan operation will be determined by the following condi- Press the programmed flex key, mapped to scan DELETE SCAN CHANNEL (S, P1, P2) DISPLAY tions: add/delete, to add the channel to the scan list. The S indicator will be shown in the display to indicate that Confirm that the radio is on.

  • Page 7: Monitor (Clr) Switch Operation In Scan

    LBI-39015 MONITOR (CLR) SWITCH OPERATION IN grammable from 0.3 to 5 seconds on 0.1 seconds steps. If no other channel activity occurs during this SCAN time, scanning will then resume. The priority chan- nels are still being sampled during the hang time. The CLR switch does not operate while scanning inac- tive channels.

  • Page 8: Public Address Option Operation

    The MDX radio can be PC programmed with up to three Carrier on P2 If the Public Address Option is present, the radio may be separate tables of tones. Either the Ericsson GE Type 99 for- CONDITION 1: P1 and P2 have Channel Guard Programmed Stop on P2, scan P1 used as public address amplifier.

  • Page 9: Motorola Format

    DATAFILE BULLETIN DF-5000-3A. <-1.0 SEC MIN-> <----NONE----> <--3 SEC MIN--> 637.5 Hz Tone D is the diagonal tone used (Ericsson GE tone sys- 652.5 Hz TONE C TONE B tems only) when the first and second tone frequencies are the 607.5 Hz...
  • Page 10 LBI-39015 Table 5 - Motorola Type Code Numbers GROUP CALL (Quick-Call Format) Table 6 - Motorola Tone Frequencies and Groups In Group Call application, the Tone Group is determined by table 7, while the frequency is determined by Table 6. Refer to First Digit of Group From Which Group From Which...

  • Page 11: Parts List

    LBI-39015 PARTS LIST ASSEMBLY DIAGRAM MDX™ ™ VHF MOBILE RADIO ASSEMBLY 19D904183P5 ( Issue 1 SYMBOL PART NO. DESCRIPTION APPLICATION ASSEMBLY 19D904183 -------------------------ASSEMBLIES----------------------- 19D904958G1 RF Board (136-153 MHz) 19D904958G2 RF Board (150-174 MHz) 19D901891G3 System Board 19D904025G2 Audio Amplifier Board 19D903963G2 Audio/Logic Board 19C851540G1...
  • Page 12 ASSEMBLY DIAGRAM LBI-39015 MDX VHF Mobile Radio (19D904183, Sh. 5, Rev. 12)
  • Page 13 LBI-39015 ASSEMBLY DIAGRAM MDX VHF Mobile Radio (19D904183, Sh. 7, Rev. 11)

  • Page 14: Interconnection Diagram

    INTERCONNECTION DIAGRAM LBI-39015 MDX VHF Mobile Radio (188D5198, Sh. 1, Rev. 0)
  • Page 15 LBI-39015 INTERCONNECTION DIAGRAM MDX VHF Mobile Radio (188D5198, Sh. 3, Rev. 0)
  • Page 16 INTERCONNECTION DIAGRAM LBI-39015 MDX VHF Mobile Radio (188D5198, Sh. 4, Rev. 0)

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