Instruction/ maintenance manual of the product LBI-38848D Ericsson
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Maintenance Manual LBI- 38848D DUAL FORMAT MDX 806 - 870 MHz MOBILE RADIO TABLE OF CONTENTS RF BOARD . . . . . . . . . . . . . . . . . LBI-3884 9 SYSTEM BOAR D . . . . . . . . . . . . . LBI-38842 AUDIO/LOGIC BOARD . . . . . . . . . . LBI-38843 AUDIO AMPLIFI ER BOARD .
Copyrigh t© Decem be r 19 92 , Ericsso n GE Mobile Comm un icat ion s Inc. T ABLE OF CONTENT S Page SPE CI FIC A TION S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 GEN ERA L DESC RIPTI ON . . .
GENERAL DESCRIPTION The D u al Fo rm at M DX Mobile R adio is a s ynthe size d, wideba nd ra dio t hat use s int e grate d circ uits and micro com- puter tec hnology to pro v id e hig h pe rforma nce trunk ed oper a- tio n.
AUDIO/LOGIC BOARD The Audio/ Logi c Board pr ovi des all audio and digi tal processing of the receive and transmit audio fo r digital proc essin g by the Log ic Board . The board a lso c ontain s audio filtering, con v entional analog tone processing, and the receiver squ elch.
HARDWARE AND HARDWARE OPTIONS The loc ation and pla cement of system har dware op tions are sh o wn o n Sheet 4 of th e 800 MHz Du al Format MD X Mobile Interconnect Diagrams. OPTION CABLE Option Cable Option PMCD7Z (19C851585P14) is used to bring all option con nections from the System Bo ard through th e back of the radio to the outside.
tone in order for the radio to enter the Ready mode. If no busy tone is present or if th e four-tone sequence isn’ t valid, the mobile will jump to the next channel in the call originate se t and ch eck fo r b usy tone as desc ribed a bov e.
In a two-tone call, the mobile sends the collec ted tone for a prog rammab le duration . In the four -t one call, th e mo- bile always se nds a 90-millisecond collect tone which the repe ater re gene rates an d sends fo r the corre ct duration .
ASSEMBLY DIAGRAM (19D904183, Sh. 1, Rev. 17) LBI-38 848D 7.
ASSEMBLY DIAGRAM (19D904183, Sh. 2, R ev. 17) (19D904183, Sh. 5, Rev. 17) LBI-38848D 8.
INTERCONNECTI ON DIAG RAM (19D904133, Sh. 1, R ev. 3) LBI-38 848D 9.
INTERCONNECTION DIAGRAM (19D904133, Sh. 2, Rev. 2) LBI-38848D 10.
INTERCONNECTI ON DIAG RAM (19D904133, Sh. 3, R ev. 2) LBI-38 848D 11.
An important point after buying a device Ericsson LBI-38848D (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Ericsson LBI-38848D yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Ericsson LBI-38848D - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ericsson LBI-38848D you will learn all the available features of the product, as well as information on its operation. The information that you get Ericsson LBI-38848D will certainly help you make a decision on the purchase.
If you already are a holder of Ericsson LBI-38848D, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Ericsson LBI-38848D.
However, one of the most important roles played by the user manual is to help in solving problems with Ericsson LBI-38848D. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ericsson LBI-38848D along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
