Ericsson MDX GE-MARC, Service Section, Page: 1 / 14

Printed in U.S.A.
LBI-38973
SERVICE SECTION
FOR
MDX GE-MARC 800 MHz RADIO
TABLE OF CONTENTS
DESCRIPTION............................................................................................................................................................ 1
INITIAL ADJUSTMENT.............................................................................................................................. 1
RECEIVER ADJUSTMENT ......................................................................................................................... 1
RE-INSTALLATION .................................................................................................................................... 1
PREVENTIVE MAINTENANCE ............................................................................................................................... 1
CONNECTIONS ........................................................................................................................................... 1
ELECTRICAL SYSTEM............................................................................................................................... 1
MECHANICAL INSPECTION..................................................................................................................... 1
ANTENNA .................................................................................................................................................... 1
ALIGNMENT................................................................................................................................................ 1
FREQUENCY CHECK ................................................................................................................................. 1
STATIC HANDLING PRECAUTIONS...................................................................................................................... 1
DISSASSEMBLY PROCEDURES ............................................................................................................................. 2
TO REMOVE BOTTOM COVER ................................................................................................................ 2
TO REMOVE TOP COVER ......................................................................................................................... 2
TO REMOVE RF BOARD............................................................................................................................ 2
TO REMOVE THE FRONT CAP ASSEMBLY........................................................................................... 2
TO REMOVE THE AUDIO AMPLIFIER BOARD ..................................................................................... 2
TO REMOVE THE AUDIO BOARD ........................................................................................................... 2
TO REMOVE LOGIC BOARD .................................................................................................................... 2
TO REMOVE THE PA BOARD................................................................................................................... 2
TO REMOVE THE DISPLAY BOARD ....................................................................................................... 3
COMPONENT REPLACEMENT ............................................................................................................................... 3
SURFACE MOUNTED COMPONENTS..................................................................................................... 3
To Remove Surface Mounted Components ............................................................................................ 3
To Replace Surface Mounted Components............................................................................................. 3
To Replace Surface Mounted Integrated Circuits ................................................................................... 3
TROUBLESHOOTING PROCEDURES .................................................................................................................... 4
Power On Self Diagnostic....................................................................................................................... 4
SYMPTOMS AND CHECKS...................................................................................................................................... 4