Ericsson 344A3072P8 Maintenance Manual Download Page 10

Page: 10 / 26

Standard Multi-unit Charger

Case

Disassembly - Use the following procedures to disassem-
ble the Standard Multi-unit Charger: (Refer to Illustrated
Parts Breakdown.)

Remove front cover assembly screw.

Remove eight cover screws (item 11-8). Gently
separate the cover assembly (item 9) from the
bottom assembly (item 10).

Lift the front of the cover assembly up and slide
the cover assembly toward the rear (approxi-
mately 1/2" to clear retaining tabs). Lift the cover

assembly out of the base assembly and turn
upside down to the right of the base.

All field replaceable parts are now accessible. To
remove and replace a subassembly, refer to the
applicable removal and replacement instruc-
tions.

Reassemble:

Install the cover assembly into the base unit by
first hooking the rear tabs and sliding the cover
forward.

Carefully lower the cover assembly onto the base
assembly.

Reinstall the nine cover screws.

LBI-38708

Summary of Contents for 344A3072P8

Page 1: ...ESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPO SURE THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY TO AVOID ELECTRIC SHOCK DO NOT PER FORM ANY SERVICING OTHER THAN TH...

Page 2: ...ted into new editions 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 w...

Page 3: ...d service shop 11 Do not disassemble the charger return it to a qualified service shop when service or repair is required Incorrect reassembly may result in a risk of electrical shock or fire 12 To re...

Page 4: ...Charger F1 315 mAmp 250 volt fast blow F2 600 mAmp 250 volt slow blow RECHARGE TIME Rapid Charger 1 hour Standard Charger 14 hours OPERATING TEMPERATURE RANGE 5 to 45 C 41 to 113 F DIMENSIONS HxWxD H...

Page 5: ...14 amps which is supplied to the six A1 charger PCBs A constant current is developed through the use of various series resistance combinations In connection with the sleeve circuitry the proper selec...

Page 6: ...hargers 120 Vac Line Cord 344A3072P10 230 Vac Line Cord 344A3072P11 Rapid Charger Power Supply F29 4R A9 0091 Rapid Charger Control Board F29 4R A9 0083 Rapid Chgr Constant Current F29 4R A9 0092 Char...

Page 7: ...the panel at the desired height and drill a 1 8 pilot hole through the panel into the studs Secure the plywood panel to the studs using four 2 1 2 long min screws 3 Using thetemplate locatekeyholeslo...

Page 8: ...cuit or an abnormal output condition exists OPERATION To Use The Multi unit Charger 1 Plug in the charger and turn the charger s ON OFF switch on 2 Turn the radio OFF and place the radio into the prop...

Page 9: ...e by inserting a couple of fingers into the sleeve cavity and gently pull upward while hold ing the base down Installation Use the following instructions to install a charger sleeve 1 With the sleeve...

Page 10: ...d slide the cover assembly toward the rear approxi mately 1 2 to clear retaining tabs Lift the cover assembly out of the base assembly and turn upside down to the right of the base 4 All field replace...

Page 11: ...onto the cover assembly 5 Install the screw to secure the board removed in step 3 6 Reconnect the charger board cable CN201 Power Supply To remove the Power Supply item 1 perform the fol lowing steps...

Page 12: ...placeable parts are now accessible To remove and replace a subassembly refer to the applicable removal and replacement instruc tions Reassemble 5 Install the cover assembly into the base unit by first...

Page 13: ...he charger see Case disassembly procedure 2 Remove the four screws item 12 1 securing the power supply assembly to the bottom assembly item 11 Slide power supply assembly forward to gain access to con...

Page 14: ...joints solder bridges or pattern cuts CHECKING PROCEDURES The following procedures will aid in isolating failures to a field shop replacable assembly These procedures do not attempt to isolate failur...

Page 15: ...rging Check constant current regulator input voltage Measure voltage at CN101 between pins 1 2 and pins 3 4 Voltage should be 13 Vdc 0 2 volts If voltage is incorrect check the interconnecting cable a...

Page 16: ...CHARGE red LED after charge se quence has started 1 This condition results when the voltage sense circuit detects an excessively high battery voltage normally battery does not exceed 10 5 volts Repla...

Page 17: ...INTERCONNECT DIAGRAM LBI 38708 STANDARD MULTI UNIT CHARGER 344A3072P9 3R M5 0041 17...

Page 18: ...LBI 38708 SCHEMATIC DIAGRAM STANDARD MULTI UNIT CHARGER 344A3072P9 4R M5 0039A 18...

Page 19: ...SCHEMATIC DIAGRAM LBI 38708 STANDARD MULTI UNIT CHARGER POWER SUPPLY F29 4R A9 0095 4R M5 0030C 19...

Page 20: ...LBI 38708 INTERCONNECT DIAGRAM RAPID MULTI UNIT CHARGER 344A3072P8 3R M5 0040 20...

Page 21: ...SCHEMATIC DIAGRAM LBI 38708 RAPID MULTI UNIT CHARGER POWER SUPPLY BOARD F29 4R A9 0091 3R M5 0026A 21...

Page 22: ...LBI 38708 SCHEMATIC DIAGRAM RAPID MULTI UNIT CHARGER CONSTANT CURRENT REGULATOR F29 4R A9 0091 3R M5 0037 22...

Page 23: ...SCHEMATIC DIAGRAM LBI 38708 RAPID MULTI UNIT CHARGER CONTROL BOARD F29 4R A9 0083 2R M5 0018A 23...

Page 24: ...LBI 38708 ILLUSTRATED PARTS BREAKDOWN STANDARD MULTI UNIT CHARGER 344A3072P9 2R K5 0024A 24...

Page 25: ...ILLUSTRATED PARTS BREAKDOWN LBI 38708 RAPID MULTI UNIT CHARGER 344A3072P8 2R K5 0022A 25...

Page 26: ...COMPONENTS ADDED DELETED OR CHANGED BY PRODUCTION CHANGES SYMBOL PART NUMBER DESCRIPTION NOTE Prefix all Part Numbers with F29 1 4R A9 0091 Power Supply PS 8 2 4R A9 0092 Constant Current Regulator As...