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DESCRIPTION

The Universal Desk Charger is designed to charge

Ericsson personal radio battery packs. The charger has one
insert sleeve to securely hold one battery pack. The sleeve
has spring loaded electrical contacts to mate with the charg-
ing and thermistor contacts on the battery pack.  The sleeves
are designed so a battery pack alone or attached to a radio
can be easily installed or removed from the charger.

The sleeve contains the charging contacts and any cir-

cuitry unique to charging a particular family of battery packs.
The sleeve is designed to easily plug into the charger base
using grooves in the base for self alignment.

Battery Pack sleeves are available for most Ericsson

personal radios including M-PA, M-PD, PCS etc. The fol-
lowing listing identifies the sleeve required for each radio.

RADIO TYPE

SLEEVE

M-PA, M-PD, MTL, 
PLS, TPX

BML 161 51/001

PCS

BML 161 51/002

M-RK

BML 161 51/003

MONOGRAM TRUNKING

BML 161 51/004

PRISM HP

BML 161 51/005

STANDARD CHARGER

 The Standard Desk Charger is powered by a 120/220

Vac power source through the use of a plug-in power trans-
former called a "Wall Cube" power supply adapter. The
charger is capable of fully charging the battery pack in 14
hours.

The charge current for the charger is provided by the

"wall cube" step-down transformer. A series resistor, selected
by the long or short battery pack microswitch, controls the
amount of charge current. A portion of the current flows
through the CHARGE LED indicating the battery pack is
connected and is being charged.

RAPID CHARGER

The Rapid Desk Charger has a built-in power supply and

plugs directly into a 120/220 Vac power source. The charger
is capable of charging most battery packs in one hour or less.

The Rapid Charger is microprocessor controlled and

uses switching current regulators to regulate the charge cur-
rent. Battery voltage and temperature are monitored by the
microprocessor which controls the CHARGE and READY
LEDs and the charge enable transistor. Input power is applied
directly to the switching power supplies. The use of the
switching power supplies and feedback current regulation
allows the charger to operate at 120 or 220 Vac, 50 or 60 Hz
without adjustment.

ACCESSORIES AND

REPLACEMENT PARTS

The following accessories and replacement parts are

available for the Universal Desk Chargers:

Recharging any battery pack or batteries other than the
ones your equipment was designed to charge may
result in damage to equipment, leakage or explosion.

CAUTION

120 Vac Wall Transformer

BML 161 51/041

220 Vac Wall Transformer

BML 161 51/042

AE/LZB 119 1643

5

Содержание BML 161 51/021

Страница 1: ...SERVICING TO QUALIFIED SERVICE PERSONNEL Maintenance Manual Universal Desk Charger Rapid BML 161 51 022 Standard BML 161 51 021 ericssonz CAUTION WARNING TO PREVENT FIRE OR ELECTRIC SHOCK HAZARD DO NO...

Страница 2: ...ns of this manual No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording for any purpose without the express...

Страница 3: ...rical shock or fire 12 To reduce risk of electric shock unplug the charger from the outlet before attempting any maintenance or cleaning 13 GROUNDING AND AC POWER CORD CONNEC TION To reduce the risk o...

Страница 4: ...Charger Not fused RECHARGE TIME Rapid Charger 1 hour Standard Charger 14 hours OPERATING TEMPERATURE RANGE 5 to 45 C DIMENSIONS HxWxD Height 4 4 inches 112 mm Width 4 7 inches 118 5 mm front 5 3 inch...

Страница 5: ...ck in 14 hours The charge current for the charger is provided by the wallcube step down transformer Aseries resistor selected by the long or short battery pack microswitch controls the amount of charg...

Страница 6: ...43 Charger Sleeve M PA M PD MTL PLS TPX BML 161 51 001 PCS BML 161 51 002 M RK BML 161 51 003 MONOGRAM TRUNKING BML 161 51 004 PRISM HP BML 161 51 005 Standard Charger Board F29 4R A9 0086 Rapid Charg...

Страница 7: ...ng an acceptable rapid charge This condition may result if the battery is too hot or cold weak or dead or defective If the blinking CHARGE indicator does not turn to a continuous RED after 15 minutes...

Страница 8: ...Remove A Battery Pack Simply reach into the cutouts provided in the sides of the charging insert and lift the battery pack out DEFINITIONS Dead Battery Battery pack with low voltage due to long term...

Страница 9: ...n 1 Remove the charger sleeve 2 Removefourcasescrews items 14 17 Gentlyseparate the bottom assembly item l from the body item 2 3 Disconnect the LED cable item 8 from connector CNI on the charger boar...

Страница 10: ...e Power Supply perform the following steps 1 Disassemble the charger see Case disassembly proce dure 2 Remove the Charger Control Board see Charger Control Board removal 3 Remove the two screws item 3...

Страница 11: ...c 0 5 Vdc at CN2 pin 1 If the output voltage is out of range the power supply assembly is defective and must be replaced 2 With a known good battery as a load check the output yoltage of the Charge Co...

Страница 12: ...laced with a known good battery If normal operation results the batteryis defective If theproblempersists the voltage detection of the PCB has failed which requires replace ment of the Charge Control...

Страница 13: ...d on the Standard Charger Board This board receives low voltage AC from the wall cube trans former This AC supply is converted to DC by a full wave bridge rectifier consisting of DI D2 D3 and D4 The c...

Страница 14: ...STANDARD CHARGER BML 161 51 021 CHARGER BOARD F29 4R A9 0086 3R M5 0028 SCHEMATIC DIAGRAM AE LZB 119 1643 14...

Страница 15: ...SCHEMATIC DIAGRAM RAPID CHARGER BML 161 51 022 POWER SUPPLY BOARD part of F29 4R A9 0082 3R M5 0017 AE LZB 119 1643 15...

Страница 16: ...RAPID CHARGER BML 161 51 022 CONTROL BOARD F29 4R A9 0083 2R M5 0018A SCHEMATIC DIAGRAM AE LZB 119 1643 16...

Страница 17: ...PARTS LIST AE LZB 119 1643 17...

Страница 18: ...STANDARD CHARGER BML 161 51 021 3R K5 0016 ILLUSTRATED PARTS BREAKDOWN AE LZB 119 1643 18...

Страница 19: ...RAPID CHARGER BML 161 51 022 2R K5 0015 ILLUSTRATED PARTS BREAKDOWN AE LZB 119 1643 19...

Страница 20: ...Ericsson Inc Private Radio systems Mountain View Road Lynchburg Virginia 24502 AE LZB 119 1643 R1A 1 800 528 7711 Outside USA 804 528 7711 Printed in U S A AE LZB 119 1643...

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