Instruction/ maintenance manual of the product LBI-31629B Ericsson
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LBI-31629B INCLUDES SER VICE SECTIO N . . . . . . . . . . . . . . LBI-31 677 ericssonz Maintenance Manual M-PD SYSTEM 136-174 MHz PERSON AL TWO-W A Y FM RADIO COMBIN A TION Ericsson Inc. Pri v ate Radio Systems Mountain V iew Roa d L ync hburg, V irginia 24502 1-800- 528-7711 (Ou tside USA, 804-5 28-7711) Printed in U.
Copyright © Apr il 1987, General Electric Compan y SPECIFICA TIONS SYSTEM Frequency Ra nge FCC Id en tification Number 136 MHz to 160 MHz AXA9WNTR-145-A 150 MHz to 174 MHz AXA9WNTR-145-B Frequency Stability 5 PPM Battery Drain (at 7.5 VDC) Standby 65 Milliamperes Recei ver (Rated Audio) 195 Milliamperes T ransmitter 1.
DESCRIPTION Ericsson GE’ s M-PD System Pe rsonal Radio is a high- quality , high-performance, two-way , FM, comm unicat ions uni t consis ting of a transmit/r eceiv e circuit with a frequency syn- thesizer cont rolled by a microprocessor .
• Channel Busy Lo ck Out : Personality information in- cludes the ca pability to preve nt the transmitter from op- erating on a channel where carr ier acti vity is present.
Assemble these part s into one unit according to the fol- lowing procedure and as sho wn in Figure 1 - M-PD Op erat- ing Controls and Accessories. 1. Screw the antenna or the RF te st connector In its receptacle. A clockwise turn will insert the antenna or RF test connector , while a counter clockwise turn will remove them.
2. U se the DTMF keypad or use the Recall T elephone Number key (RCL) to enter the digits of the te le- phone nu mb er . 3. Press the secondar y key and the n press the SEND key . An optional tone (sidetone) m ay be heard as each digit is transmitted.
Q202. The RF power output from Pin 2 of th e TX-Amp module A201 i s conne cted th rough a resist or atte nuator to Pin 1 of the P A module where it is appli e d to t he in pu t of the RF power amplifier stages. The RF power amplifie r stages amplify the input from the TX-Am p module to a typ ical power output le vel of 6 watts at Pin 5.
Synthesizer Circuit The Synt hesizer circu it co ntains P hase-L ock-l oop mod - ule (PLL) A 102, VCTCXO Referenc e Oscillator module A103, TX/RX V oltage Controlled Oscillator modul e (VCO) A106 and a Low Pas s Filter ampl ifie r (LPF). Refer to Fi g- ure 9 - Synthesizer .
CONTR OLLER CIRCUIT This co ntroller circuit consists of contr ol circuits and audio ci rcuits. Physi cally , this circuit consists of three cir- cuit boards as follo ws: • Contr ol Boar d • Signa.
Charger comb inations for charging the battery packs a re av ailable with char ge times of 1 hour , 3 hours and 16 h ours. A combination can be a single unit desk or a vehicular char ger . It can also be a wall mounted multiple charger . Charge Le vel A fully charged battery pack should provide a te rminal voltage greater than 7.
Figure 11 - Disassembly Figure 12 - Disassembly Step 1 Figure 13 - Disassembly Step 2 Figure 14 - Disassembly Step 3 LBI-31629 10.
Figure 15 - Disassembly Step 4 Figure 16 - Disassembly Step 5 Figure 17 - Disassembly Step 6 Figure 18 - Disassembly Step 7 LBI-31 629 11.
INTRINSICALL Y SAFE USA GE Selected personal radios with appropriat e factory installed F4 Options are certi fied as Intrinsically Safe by the Fa ctory Mu tual Research Corp oration for use in Class 1.
1. The battery is continuously overchar ged for lo ng pe ri- ods of time. 2. A regularly performed duty cycle which allo ws the battery to expend only a limited por tion of i ts capa c- ity .
INTERCONNECTION DIA GRAM LBI-31629 14.
RADIO BO ARD A4WE0373 9/40 OUTLINE DIA G RAM COMPONENT SIDE SOLDER SI DE LBI-31 629 15.
SCHEMA TIC DIA GRAM RADIO SCHEMA TIC DIA GRAM WITH TYPI CAL V OL T A GE A4WE0373 9/40 LBI-31629 16.
Contr oller Board A4WE0402 3 OUTLINE DIA G RAM COMPONENT SIDE SOLDER SI DE LBI-31 629 17.
SCHEMA TIC DIA GRAM Contr oller Board A4WE0402 3 LBI-31629 18.
Signalli ng Board A4WE0402 4 OUTLINE DIA G RAM SCHEMA TIC DIA GRAM COMPONENT SIDE SOLDER SI DE M-PD Signaling Board A4WE0402 4 LBI-31 629 19.
LCD Board A4WE0373 7 OUTLINE DIA GRAM COMPONENT SIDE SOLDER SIDE LBI-31629 20.
SCHEMA TIC DIA GRAM LCD 1 Board A4WE0373 7 LBI-31 629 21.
SCHEMA TIC & OUTLINE DIA GRAM Battery Packs LBI-31629 22.
MECHANICAL P ARTS BREAKDO WN M-PD EXPLODED VIEW SYSTEM TYPE A1WL09 006 LBI-31 629 23.
PA R T S L I S T LBI-31629 24.
PA R T S L I S T LBI-31 629 25.
PA R T S L I S T LBI-31629 26.
PA R T S L I S T LBI-31 629 27.
An important point after buying a device Ericsson LBI-31629B (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-31629B 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-31629B - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ericsson LBI-31629B you will learn all the available features of the product, as well as information on its operation. The information that you get Ericsson LBI-31629B will certainly help you make a decision on the purchase.
If you already are a holder of Ericsson LBI-31629B, 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-31629B.
However, one of the most important roles played by the user manual is to help in solving problems with Ericsson LBI-31629B. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ericsson LBI-31629B 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
