Ericsson LBI-38378D manual

LBI-383 78D M-P A  VHF POR T ABLE FM RADIO T ABLE OF CONTENTS REAR CO VER ASSEMBL Y . . . . . . . LBI-38597 FR ONT CO VE R ASSEMBL Y (EARLIER) AND CONTR OL BO ARD . . . . . . . . LBI-38384 FR ONT CO VE R ASSEMBL Y (LA TER) LESS CO NTROL BO A R D . . . . . . . . LBI-38 834 CONTR OL BO ARD ( LA TER) . . . . . . LBI -38828 VHF SER VICE SECTI ON . .[...]

Copyright© No vember 1989, General Electric C ompany T ABLE O F CO NTE NTS Page SPECIFIC A TIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 OPT IONS AND A CCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 INTR ODUCTION . . . . . . . . . . . . [...]

SPECIFICA T IONS* GENERAL Freq uency Bands FCC TYPE DOC 146 - 16 2 M Hz AXA TR-1 82-B 5 TR-18 2 -D2 157 - 17 4 M Hz AXA TR-1 82-C 5 TR-18 2 -D2 136 - 150. 8 MHz Frequency Stability 5.0 ppm Channel Capacity Select Model 16 Scan Mo del 192 System Mo del 192 Maximum Frequency Separatio n full bandsplit Channe l Spac ing 30 kHz Oper atin g T emp eratu [...]

OPTIONS AND A CCESSORIES Chargers Radios, Antennas, Batteries Carrying Accessories A udio Accessories LBI-3837 8D 4[...]

INTR ODUCTION The M-P A radio is a high qu ality microproce ssor con- trolled synthesized portable FM radi o. M-P A opera tion is hig hlighted by the radi o’ s programming versatility . This al- lows t ailored operation of the portable radio to me et the needs of the radio system and the i nd i vidua l users. Three ( 3) different M-P A radio mode[...]

• Programmable Multi-T one Channel Guard (CTCSS) - Channel Guard tone frequencie s within the ran ge of 67 Hz to 210.7 Hz, including all of the standard EIA fre quencie s, can be pr ogrammed for enc od ed /decode d op eration. • Programmab le Multi-Code Digital Channel Guard - S imilar capability as with tone Ch annel Guard is pro v ided. • T[...]

Figure 1 - Sy stem Model Figure 2 - Scan Model Figure 3 - Select Model Figure 4 - Side View (All Mo dels) LBI- 38378D 7[...]

REAR CO VER ASSEMBL Y The Rear Cover Assembl y houses the RF Bo ard in the die-cast al uminum case. The com p lete asse mbly consists of the VHF RF Board, aluminum case, top antenna jack, side (UD C ) antenna jac k and various ha rd ware. The RF Board’ s circuitry includ es the transmitter , re- ceiv er and the frequency synthesizer . This FM cir[...]

pack in need of a char ge will cause the low battery "BA T" status flag on the radio to turn on. This flag will turn on when the battery pack’ s v oltage dro ps belo w approxi mately 6.8 V olts. The low batt ery alert tone will also be hear d wh en the ba ttery pa ck nee d s charging . RECHARGEABLE B A TTERY P A CK DISPOSAL The product [...]

T ABLE 2 - UDC PIN FUNCTIONS PIN NAME INPUT OR OUTPUT USE 1 GR OUND ------ - Case Ground 3 UDC RX A UDIO Output T est Point For Speaker Audio 4 SWB A TT Output Switched Accesso ry Powe r 5 EXT PTT Input Extern al Microp hone PTT In put 6 TX D A T A Input For Programm ing 7 RX D A T A Output For Progra mm ing 8S P A R E 9 UDC V OL T ------ - Option/[...]

• T wo in dividual T ype 99 T on e Group Sets • Control Knob selects Channels, Modes or Chan nel Guard* • Menu Selections* • Home Mode or Home Channel (depend ing on Control Kno b progra mming) or Disa bled* • Scan E nabled or Disabled* • Scan with Channe l Guar d En abled or Disab led * • Scan Ac ross Mo des Enable d or Di sabled* ?[...]

P AHC1C Belt Clip P AHC1D Swivel Mount with Belt Loop P AHC5N Case, Le ather , with Belt Loop (Shor t Case) P AHC1F Case, Leather , with Belt Loop (T all Case) P AHC1K Shou lde r Strap, Lea t he r , with Mounting Plate P AHC5R Holster , Plastic. MAINTENANCE The M-P A radio is a very reliable unit and will normally pr ovi de many years of tro ubl e-[...]

DISASSEMBL Y / REASSEMBL Y In the event internal service is required, disassemble the radio in acco rdance with the follo wing outlined step s. See Figures 6 - 10. Reassemb le the unit by following the ste p s in re verse orde r . O bserve scre w lengths and do not over tighten the screws when reassemb ling th e unit. T orque specifica tio ns are l[...]

RF Board Access Holes are located in t he RF Board shield for alignment of the R eferenc e Oscillator ( U3 ), Modulation Balanc e pot ( R18 ), VCO Mo dulation pot ( R19 ), 2nd Local Oscillat or Adju stm ent ( T1 ), an d the Qu adrature De tector Adjustment ( T2 ). T o align these items, shield re mo v al is not necessary . If remov al of the RF Boa[...]

TION: In stallat ion o f screws that are longer than the origi- nals may damage the LCD Board, flex circuit s or the threads. T o remove the Control Board, remo ve the T orx scre w ( E ) in the l ower left-hand corner that sup plies battery po wer to the board. An earli er Front Cover Assembly has an ad di- tional scre w located just belo w connect[...]

BLOCK DIA GRAM Figur e 11 - Rea r Cover Ass em bly Block Diagra m LBI-3837 8D 16[...]

BLOCK DIA GRAM Figure 12 - Front Cover Assembly (Earlier) And Co ntrol Board Blo ck Diagram LBI- 38378D 17[...]

Later Front Cover Assembly Ke ypad Flex Removal T o remove the K eypad Flex, first remov e the UDC Flex/UD C/M onit or Butto n/PTT Switch assembly as pre- viou sly st ated. Next remove the scr ew securing the em er- genc y switc h suppor t ( G ) then remo ve the support. Remov e the knobs using the he x dri ver . W ith a spanne r wrench, re- move t[...]