User's Manual

ManualsBrandsEricsson Manualscomputers & electronicsLBI-38848D

Maintenance Manual

LBI-38848D

DUAL FORMAT MDX



806 - 870 MHz

MOBILE RADIO

TABLE OF CONTENTS

RF BOARD . . . . . . . . . . . . . . . . . LBI-38849

SYSTEM BOARD . . . . . . . . . . . . . LBI-38842

AUDIO/LOGIC BOARD . . . . . . . . . . LBI-38843

AUDIO AMPLIFIER BOARD . . . . . . . LBI-38844

FRONT CAP ASSEMBLY . . . . . . . . . LBI-38850

LBI-38974

PA BOARD . . . . . . . . . . . . . . . . . LBI-38302

SERVICE SECTION . . . . . . . . . . . . LBI-38851

DUAL FORMAT MDX



RADIO ASSEMBLY

ISSUE 1

PARTS LIST

ericssonz

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.

SYMBOL PART NUMBER DESCRIPTION

APPLICATION ASSEMBLY

19D904183

— — — — ASSEMBLIES — — —

A1 19D902123G22 RF BOARD

A3 19D901891G2 SYSTEM BOARD

A4 19D904025G2 AUDIO AMPLIFIER BOARD

A5 19D903963G1 AUDIO/LOGIC BOARD

19C851822G1 PA BOARD

— — — — — KITS — — — — —

344A4253G1 Hardware Kit (No. 1)

344A4255G7 Hardware Kit (No. 2)

— — — — — CABLES — — — —

19A705301P6 Cable, Antenna

19B801467P1 Cable, J705 to J151

19B801467P2 Cable, J5 to J105

19B801454P36 Cable, RX to J104

19A705235P3 Cable, Ribbon, J901 on Audio Amplifier

to J902 on System Board

19B801454P38 Cable, Antenna to J7

19B801454P37 Cable, TX to J101

19B802397P1 Cable, Handset

— — — MISCELLANEOUS — —

19D904027P1 Casting

19C337683G2 Bracket

19D904185G1 Cover, Bottom

19D904186G1 Cover, Top

19D904187G1 Panel, Front

19B801358P18 Cable, 9 Foot, Power

19B235310P10 Nameplate, Combination

COMPONENTS, ADDED, DELETED OR CHANGED BY PRODUCTION CHANGES

Summary of content (12 pages)

PAGE 1
LBI-38848D PARTS LIST DUAL FORMAT MDX RADIO ASSEMBLY ISSUE 1 SYMBOL PART NUMBER DESCRIPTION APPLICATION ASSEMBLY 19D904183 — — — — ASSEMBLIES Maintenance Manual MDX DUAL FORMAT A1 19D902123G22 RF BOARD A3 19D901891G2 SYSTEM BOARD A4 19D904025G2 AUDIO AMPLIFIER BOARD A5 19D903963G1 AUDIO/LOGIC BOARD 19C851822G1 PA BOARD ————— 806 - 870 MHz MOBILE RADIO ——— KITS — — — — — 344A4253G1 Hardware Kit (No. 1) 344A4255G7 Hardware Kit (No.
PAGE 2
LBI-38848D TABLE OF CONTENTS Page NOTICE! This manual covers Ericsson and General Electric products manufactured and sold by Ericsson Inc. NOTICE! Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier. Any repairs, alterations or substitution of recommended parts made by the user to this equipment not approved by the manufacturer could void the user’s authority to operate the equipment in addition to the manufacturer’s warranty.
PAGE 3
LBI-38848D SPECIFICATIONS* GENERAL Regulatory Approval FCC (United States) DOC (Canada) AXATR-311-A2 TR-311 Operating Voltage 13.8 Volts ±20% Battery Drain Receiver (13.8 Vdc) Off Squelched Unsquelched Transmitter (13.8 Vdc) 0.01 Amperes (maximum) 0.75 Amperes (maximum) 2.0 Amperes (maximum at 10 Watts audio, External Speaker) 11 Amperes (maximum at 25 Watts RF) Channel Spacing 25 kHz (12.5 kHz NPSPAC) Frequency Stability ±1.5 PPM (±0.
PAGE 4
LBI-38848D Table 2 - Digital Channel Guard Codes PRIMARY EQUIVALENT CODE CODE 023 025 026 031 032 043 047 051 054 065 071 072 073 074 114 115 116 125 131 132 134 143 152 155 156 162 165 172 174 205 223 226 243 244 245 340 766 566 374 643 355 375 520 405 301 603 470 640 360 327 534 060 173 572 605 273 333 366 233 517 416 354 057 142 135 350 104 267 176 370 707 771 675 717 746 701 721 615 674 737 702 634 714 415 660 741 553 270 610 475 750 557 342 417 554 PRIMARY EQUIVALENT CODE CODE 251 261 263 265 271 3
PAGE 5
LBI-38848D HARDWARE AND HARDWARE OPTIONS SYSTEM DESCRIPTION EDACS The location and placement of system hardware options are shown on Sheet 4 of the 800 MHz Dual Format MDX Mobile Interconnect Diagrams. OPTION CABLE Option Cable Option PMCD7Z (19C851585P14) is used to bring all option connections from the System Board through the back of the radio to the outside. This cable is required with all external options.
PAGE 6
LBI-38848D Figure 1 - GE-MARC Block Diagram Figure 3 - Signal Timing tone in order for the radio to enter the Ready mode. If no busy tone is present or if the four-tone sequence isn’t valid, the mobile will jump to the next channel in the call originate set and check for busy tone as described above. GLOSSARY OF GE-MARC TERMS Busy Tone Idle Mode Ready Mode In the "standby" condition, the mobile is inactive but prepared to call or be called. The trunked radios are IDLE until they are turned off.
PAGE 7
LBI-38848D In a two-tone call, the mobile sends the collected tone for a programmable duration. In the four-tone call, the mobile always sends a 90-millisecond collect tone which the repeater regenerates and sends for the correct duration. Group/Individual Tones Group/Individual Tones chosen from the 34 standard frequencies follow the collect tone. In a two-tone call, the second tone is sent for 450 milliseconds.
PAGE 8
ASSEMBLY DIAGRAM LBI-38848D (19D904183, Sh. 1, Rev.
PAGE 9
LBI-38848D (19D904183, Sh. 2, Rev. 17) 8 ASSEMBLY DIAGRAM (19D904183, Sh. 5, Rev.
PAGE 10
INTERCONNECTION DIAGRAM LBI-38848D (19D904133, Sh. 1, Rev.
PAGE 11
LBI-38848D (19D904133, Sh. 2, Rev.
PAGE 12
INTERCONNECTION DIAGRAM LBI-38848D (19D904133, Sh. 3, Rev.