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SERVICE MANUAL

1. TONER HD404608A16H IC 2SE D7 1 2 04 1 2 cpus RESET RIS 15k H Gees 404608 20 1 25 cht DAN202U 3 l 8 27 1 m Y pp 1 258 26 816 sl BAND 4 NS m 1 Y 23 067 2 06172 e 6 0 22 59 5 E 2 KEYI2 i 3 d sh V M R66 10k 56 BAND 2 whe 1 ER 588001220 010 0511 2 0 774 SEH 1 T I 7 BAND lt 0 H 0811 2 05 1 2 1 DAN202U 5 07 265 KEYIO l ME DL 32 768 kHz Paap meas Ee 1 8 5 1 Q5 DTC144TU 9 012 DAP 202U KEYSO 077 b LIGHT 52 L gt m 5 8 5 5 z 8242425 R62 47k 218 5 x x 8 2 N 8 8 35 0022 C32 470P M ROG 47k SP SPEAKER Q ae R32 27K R31 5 R30 22k 015 dag Sri DA204U 5 U ter 7 5 5 2 x A oe 126393 R8 220k 27 470k 1 5 x 128 KEYS INITIAL MATRIX BANDS 04 1 2 RA GFK BAND 4 7 mee D4 1 2 R42 47 BAND 2 05 1 2 05 7 2 47k 1 1 1 1 l H t 1 H 1
2. SERVICE MANUAL 144MHz FM TRANSCEIVER 25 IC esE Icom Inc INTRODUCTION This service manual describes the latest service information for the 25 5 144 MHz FM TRANSCEIVER at the time of going to press 5 versions of the IC 2SA SE have been designed This service manual covers each version VERSION MODEL VERSION NU MBER Europe 25 Australia DANGER NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V This will ruin the transceiver DO NOT expose the transceiver to rain snow or any liquids DO reverse the polarities of the power supply when connecting the transceiver DO NOT apply an RF signal of more than 20 dBm 100 mW to the antenna connector This could damage the transceiver s front end ORDERING PARTS Be sure to include the following four points when ordering replacement parts 10 digit order numbers Component part number and name Equipment model name and unit name Quantity required Wh lt SAMPLE ORDER gt 1150000730 SC1096 2 gt MIN UNIT 5 pieces 8810005720 Screw 2 20 25 Rearpanel 10 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTE Make sure a problem is internal before disassembling the transceiver DO NOT open the transceiver until the transceiver is disconnected from a power source 3 DO NOT force any of th
3. 5 1 MAIN MIN UNIT AND 5 2 ADJUSTMENT 5 6 1 5 PREPARATION BEFORE 6 1 PLL ADJUSTMENT 6 2 RECEIVER ADJUSTMENT e EE 6 3 TRANSMITTER ADJUSTMENT 6 4 BOARD 5 7 1 10 LOGIC 7 1 MAIN MINJ UNIT u aaa aa aaa 7 4 MBD AND AF UNIES ees 7 6 IG ANDMIC UNS os EEN 7 7 DET AND REG UNITS r eebe e 7 8 RF AND eset apr ls ee ua 7 9 PUL AAND PAT UNMS qua itat ot dee 7 10 PARTS ISR oh lentes 8 1 7 OPTIONAL UNITS 9 1 3 UT 50 TONE SOUELCH UNI EE 9 1 UT 51 TONE ENCODER UNIT ee cian ah bee 9 2 UPAS DTMF DECODER UNIT 9 3 VOLTAGE DIAGRAM 10 1 1 SPECIFICATIONS GENERAL Frequency coverage Mode Selectable tuning step e Memory channels Antenna impedance Power supply requirement Current drain at 13 8 V DC Usable
4. UNIT DTA144EU Symbol 16 DTC144EU Symbol 26 CCM cron eg E Leg GND MIG 7 5 DET AND REG UNITS e DET UNIT 25 3770 3 Symbol JY3 88 2504081 5 Symbol C1 Symbol BS BASE COLLECTOR Di 25037703 02 25840815 Q1 03 O6 e REG UNIT DND 55 25A1162 GR Symbol SG DA114 2SA1576 Symbol AV Symbol FR BASE xr COLLECT OfI EMITTER 01 02 03 254 1162 GR 06 2541576 R Q2 GND FMG2 Symbol G2 GND 258798 Symbol DK COLLECTOR COLLECTOR EMITTER 2504081 5 Symbol BS BASE COUUDCTOR ETTER Q1 Q3 05 7 6 RF AND APC UNITS RF UNIT COIL BOARD COIL BOARD E RT 5 La ONE Lac evi ONE SSH 5918 AN Au svia DK ova APO dH at 25 4403 3 COIL BOARD Symbol LY3 25C4405 3 Symbol OY3 BASE COLLECTOR a 25044033 02 2504405 3 01 APC UNIT Tad OND Sl 24 W 22A 2 gem FERENT __ k 1 22A ONS EAR ONS FMS1 25 4081 DAP202U 2581182 0 DA204U Symbol BS Symbol SI
5. 1 HUEN SOL se BUSH MONI ev ROSH MONI RE au 02 2040 T 7 01 OTCI4S4EU 5 12 uPD4095 BG 8 To 5 RX TX 5 0V ICT HPD E0946 BG GND 35 LA 9 TONE L Tosra ul RX LSV 3 3 5 NE O gp DETO si ose CH 4 4 45 AEN 08 OPTION Te 2541576 2 Y 6 SQL CLOSE 5 0V AF UNIT SOL CLOSE 3 9V SOL CLOSE 4 0V nn T ET 500 OPEN 2 6V SQL OPEN 2 8V so 3 6 X 08 455 7 CFUM455E R30 39k PUSH KEY 2 4V PUSH MONI KEY 2 6V PUSH MONI KEY 3 4V R4 10k soL cLose ov SQL OPEN 0 8V SQL CLOSE 0V PUSH MONI KEY 504 OPEN 0 4V 10 9 PUSH MONI KEY 10 4 2564081 c2 SS 0 01 0 07 83 Apa amp lt Krim m Kl bad g 13V 26V SQL CLOSE OV R29 SOL OPEN 3 9V 47k 670k gt PUSH MONI d 5 19 47 02 5 42 8 25811825 T 3 S87 Ro un D KH 8 oe 2 e 8 E x 5 504 o
6. 1 1 T H R60 REG 220k R58 220k R57 220k TO OPTION TO BATTERY PACK MIN UNIT 5v H Ee PRT UNIT s LL 58 SQL CLOSE 3 9V SQL CLOSE 4 0V CLOSE S 0V Q ce e wh SQL OPEN 2 6V SQL OPEN 2 8V 4 3 5 soL 3 6 Oe IN PUSH KEY 2 4V PUSH KEY 2 6V PUSH MONI KEY S o EXT g 1 S 5 R amp 9 SAS 8 5115 SQL CL 51975 SE z 3115 SQL erzi Te 21919 Y 7T Ts PUSH M 6 amp ic cs RS nd 48 86 103 S kaf 577 39 lc 256408 IN 0 001 5 2 N So 5 IN pe 5 x en LS 05 8 47P 5 05 AW 256 4081 SPE NIN Q Ey e J3 R7 470k EXT MIC 5 M RX 3 6V CIS 0 001 RIZ Jk 0007 4 R3 100k 0 gt 0 5 Y d Cm 0 01 ES DESEN Fo 9578 an vi 470P 1 EXT sp O 22 89 470 7368 SOL CLOSE O 5V SOL CLOSE OV ACSI 52V lop at WIN Se DEE s E PUB
7. PIN PORT NUMBER NUMBER DESCRIPTION Q1 Outputs an AF mute signal for AF power amplifier Outputs a microphone mute signal When transmitting a tone signal the MIC signal line goes to ground Q3 Outputs a receive mute signal for RMUTE the AF mute circuit When emitting beep tone this port outputs the mute signal and the AF ON port does not output it Q4 Outputs a control signal for 5 V TMUTE regulator Q5 Outputs transmit receive switching SEND signals This port becomes LOW while transmitting This port becomes HIGH while m the power saver function is activated Q7 12 Outputs a control signal to cut off CPC the loop filter while the power saver function is activated Q8 11 Outputs a mode signal MODE MUTE OUTPUT EXPANDER IO UNIT 2 PIN PORT NUMBER NUMBER DESCRIPTION Q2 03 Outputs a control signal for the RF BA2 BA3 bandpass filter 13 14 Outputs a control signal for the output power selecting circuit This signal is converted into PCON voltage APC reference voltage using the D A converter R2 R6 5 MECHANICAL PARTS AND DISASSEMBLY 5 1 CHASSIS PARTS CHASSIS sess avr Gomes emt eme mere seme mur ____ E 8810001700 Screw No 0 3 M1 4x3 5 8210004810 752 Front 25 8
8. ADJUSTMENT MEASUREMENT POINT VALUE UNIT LOCATION UNIT ADJUST OUTPUT Displayed frequency 145 00 MHz Top Connect the RF 5 0 POWER e Output power HIGH panel power meter to the Simplex antenna connector Transmitting Output power LOW 1 0 25 1 0W B Output power LOW 2 Approx 1 5 W Output power LOW 3 Approx 3 5 W ADJUSTMENT CONDITIONS ADJUSTMENT FREQUENCY 1 Displayed frequency 145 00 MHz Top Connect the FM 4 8 kHz R13 DEVIATION Output power HIGH panel deviation meter to Apply an AF signal to the MIC the antenna jack connector via the 75 mV 1 kHz except U S A attenuator 170 mV 1 kHz 0 5 Set the FM deviation meter HPF 50 Hz LPF 20 kHz De emphasis OFF Detector 2 e Transmitting FREQUENCY DEVIATION e Displayed frequency 145 00 MHz Connect the 3 5 kHz 16 e Push and hold the FUNC C deviation meter to V M and LIGHT switches and the antenna then turn power ON connector via the Push and hold the LIGHT switch attenuator and then push the PTT switch NOTE The above DTMF condition is cleared after the power is turned OFF Connect the 3 5 kHz LGC R15 deviation meter to the antenna connector via the attenuator TONE CALL FREQUENCY DEVIATION IC 2SE only Displayed frequency 145 00 MHz e Push and hold the LIGHT switch and then push
9. ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 274 V 270 ERJ3GEYJ 104 V 100 ERJ3GEYJ 105 V 1 ERJ3GEYJ 393 V 39 kQ ERJ3GEYJ 471 V 470 ERJ3GEYJ 471 V 470 ERJ3GEYJ 102 V 1 ERJ3GEYJ 225 V 2 2 ERJ3GEYJ 272 V 2 7 ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 104 V 100 ERJ3GEYJ 474 V 470 kQ ERJ3GEYJ 393 V 39 ERJ3GEYJ 473 V 47 ERJ3GEYJ 821 V 820 0 ERJ3GEYJ 274 V 270 C2012 1E 1042 C1608 SL 1H 820J T C2012 F 1E 104ZT C2012 1E 1042 C2012 1E 1042 C1608 SL 1H 180J T C1608 1H 560 C1608 1H 102 1608 1H 102 1608 1H 471 1608 1 102 1608 1 102 1608 1H 102 1608 1H 330J T C1608 1H 102K T C2012 F 1042 C1608 JF 1032 C1608 JB 1E 103K T C1608 JB 1H 102 C2012 B 1E 473K T C2012 B 1E 473K T C2012 B 1E 473 C1608 JB 1H 102K T C1608 JF 1032 C1608 JB 1H 471 C1608 JF 1H 1032 C1608 JF 1032 B 1962 HFB2 0 0 7 8 REG UNIT 1180000530 1130004170 1130004170 1530002280 1510000510 1530002280 1520000200 1530002280 1510000500 1750000160 1750000160 1750000160 7030003400 7030003520 7030003560 7030003560 7030003560 4030006850 4510003160 4030006850 4510001320 4030006850 4510003190 4030006850 4030006850 4030006850 4030006850 4510003190 0910020125 6910003110 RF UNIT 1530002570 1530002560 1790000620 1790000640 179
10. KEYS2 KEYS3 06 1 2 R6 1 5 12 d 2 2 SPEAKER NEVI WA d KEYIT Ds 2020 R32 27 1 nEYIO BN d seg 015 ee p SE s as S 2040 ITALIY U S A ASIA AUSTRALIA 5 S sl 5 NG ES RI2 2 04 O O 1 2 47k 95 220k LA6393M 802 04 18 S 5 SI 5 m 053 SAS 877 70k x NUM 254 SLM 23VMWS TA x B 051 m 9 4 5 0 RIG 10k Ae 052 M 1 07401 amp AV 5 INTO N 03 20 13 D 25880 90 RH5SVA37CA CH 3 2 a a 2 3 3 5 2 2 5 5 CG R65 R20 33k 70 N Se er 40 I SI AN _ 03 S 62 ES 77 Ee 55 s as 38 mre ees cm 5 2 1 08 1 2 be DN 77 DAN202U KEYS KEYS 2 KEYS 13 an M Ki E Sg ES R25 Ig 9 st E 470K FUNC INITIAL GA 8 5 68 04 26 MATRIX i 4 5 8 69 J OY 25 BAND B n 1 TONEC
11. 471 ORDER 7030003680 Resistor ERJ3GEYJ 104 V 100 kQ 7030003680 Resistor ERJ3GEYJ 104 V 100 7030003560 Resistor ERJ3GEYJ 103 V 10 kQ 7030003580 Resistor ERJ3GEYJ 153 V 15 7030003520 Resistor ERJ3GEYJ 472 V 4 7 kQ 7030003330 Resistor ERJ3GEYJ 121 1200 0910020114 P C Board B 1921D 6910003110 Lead Frame HFB2 0 0 7 8 4030006640 Ceramic C1608 SL 1H 180J T 4030006690 Ceramic C1608 SL 1H 330J T 4030006580 Ceramic C1608 SL 1H 070D T 4030006620 Ceramic C1608 SL 1H 120J T 4030006850 Ceramic C1608 JB 1H 471K T 4030006580 Ceramic C1608 SL 1H 0700 4030006720 Ceramic C1608 SL 1H 560J T 4030006520 Ceramic C1608 SL 1H 010C T PLL UNIT 4030006580 Ceramic C1608 SL 1H 070D T 1120001550 IC M54959FP 1130004200 IC TC4S66F 4030006720 Ceramic C1608 SL 1H 560J T 4030006580 Ceramic C1608 SL 1H 070D T 4030006860 Ceramic C1608 JB 102 4030006860 Ceramic C1608 JB 1H 102K T 4030006860 Ceramic C1608 JB 1H 102K T 4030006860 Ceramic C1608 JB 1H 102K T 4030006860 Ceramic C1608 JB 1H 102 1560000340 FET 2SK210 Y 1560000430 FET 25 302 1530002560 25 4403 3 1530002560 Transistor 25 4403 3 1530002560 Transistor 25 4403 3 1560000540 25 880 1590000970 Transistor 2 7148 1590000430 Transistor DTC144EU 1590000440 Transistor DTA143ZU 1560000540 FET 25 880 0910020173 1
12. Symbol B1 182 Symbol P Symbol K COLLECTOR 1 BASE EMITTER BASE BASE COLLECTOR COLLECTE COLLECTOR WITTER EMITTER Q2 Q5 Q1 04 02 Di 7 7 PLL AND PRT UNITS e PLL UNIT S 8 S 8 5 E s 2 8 Be 8 K 25K210 Y Symbol Y Y 2504403 3 25 302 GR 25 880 Y DTA143ZU Symbol LY3 Symbol TG Symbol XY Symbol 113 BASE DRAIN SUAE COLLECTA 7 souncE EMITTER GATE DRAIN Q3 Q4 Q5 25K210 Y O1 010 06 Qa 2SK302 GR 02 DTC144EU FMA2 Symbol 26 Symbol AZ rett 4 S COLLECTOR CMITTEAL e PRT UNIT to to MATH MIN UNIT MIN UNIT HY EXT to MAIN MINI UNIT 02CZ25 1 Z Symbol 5 17 5B07 03C TA SB20 03P TD 258798 25 4081 5 Symbol J Symbol SC Symbol DK Symbol BS l BASE BASE bus CEA LECTOR COLLECTOR Cr LECTOR EMITTER EMITTER 02C25 1 Z 06 D O1 02 SB07 03C TA D2 7 10 SECTION 8 PARTS LIST LOGIC LGC UNIT ORDER DESCRIPTION LOGIC LGC UNIT ORDER 1140001130 HD404608A16H IC 2SE 7030003790 Resistor ERJ3GEYJ 824 V 820 1140001170 HD404608A20H 25 7030003750 Resistor ERJ3GEYJ 394 V 390 1120000430 LA6393M TP T1 7030003720 Resistor ERJ3GEYJ 224 V 220 kQ 1180000550 RH5VA37CA T1 Resistor ERJ3GEYJ 104 V 100 1130003760 TC4S81F Resistor
13. 1 a CG i i 1 Py 1 680 STe A SDAYA TENG EA AREN VK ken AN i 1 800 ees E p 9 79 Sei daf e 907 ET Lon gege rem E ST ah ep Fe 8 s 1 ER 23 amp o wu m er JO oS w Z9 1 m T i OPTION 37371 25 2954 25 4403 3 25 882 Y Symbol Symbol L Y3 Symbol TY DAC BASE DRAIN aran co LEcTOR CO LLEETOR 1 EMITTER EMITTER T 5 21 lt m DTC144EU Symbol 25 COLLECTOR EMITTER Q4 7 3 MBD AND AF UNITS MBD UNIT 25 4403 3 Symbol LY 3 COLLECTOR EMITTER CH Q2 Q3 05 DTA144TU Symbol 16 BASEL J coi iere GND R 55 GND MIN AF UNIT DAP202U Symbol 2581182 Q Symbol 1182 2504081 R Symbol BR COLLECTOR ta VR UNIT EMITTER Q1 02 65 Q6 25J106 GR Symbol VG SOURCE GATE Q3 7 4 IO AND MIC UNITS 10 UNIT m UNIT Ca 1 DTC144EU Symbol 26 SDATA MODE MIC TMUTE GND SENG PSC e UNIT 2 IO UNIT 1 EI Geng o BA 97 o SS o S m a La 5 M m 2 5 s 9 8
14. 4030006860 Ceramic C1608 JB 1H 102 7030003800 Resistor ERJ3GEYJ 105 V 1 4030004760 Ceramic 2012 F 1E 1047 T IC 2SE only 4030006850 Ceramic C1608 JB 1H 471K T 7030003640 Resistor ERJ3GEYJ 473 V 47 kQ 4030006850 Ceramic C1608 JB 471 IC 2SE only 4030006850 Ceramic C1608 JB 1H 471K T 7030003560 Resistor ERJ3GEYJ 103 V 10 4030006850 Ceramic C1608 JB 1H 471K T 7310002740 Trimmer RV 150 4030006850 Ceramic C1608 JB 1H 471K T 14 103 4030006850 Ceramic C1608 JB 1H 471K T 7310002600 Trimmer RV 110 4030006850 Ceramic 1608 JB 1H 471 RHO3A3AS4X0AA 473 4030006850 Ceramic C1608 JB 1H 471K T 7030003760 7030003580 7030003580 7030003500 7030003760 7030003760 7030003800 7030003800 7030003760 7030003620 7030003380 7030003600 7030003580 7030003610 Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor 474 V 470 ERJ3GEYJ 153 V 15 ERJ3GEYJ 153 V 15 ERJ3GEYJ 332 V 3 3 ERJ3GEYJ 474 V 470 ERJ3GEYJ 474 V 470 ERJSGEYJ 105 V t ERJ3GEYJ 105 V 1 ERJ3GEYJ 474 V 470 ERJ3GEYJ 333 V 33 kO ERJ3GEYJ 331 V 330 0 223 V 22 ERJSGEYJ 153 V 15 ERJ3GEYJ 273 V 27 4030008430 6910003920 5040001410 5040001410
15. A 8 5 12 5 g N 27 01 H 9 L UNIT m 3 0 5 1096 7 14 227 o lt 828 I a 515 es on amp KS SiS 5 HSMBBAS ele 57 e R21 E 2 815 D 27 5 amp 228 5 2 zT 5 num 5 N 5 als 5 S N e sl o 10 1 Icom Inc 6 9 16 Kamihigashi Osaka 547 Japan Phone 06 793 5301 Fax 06 793 0013 Telex 05277822 ICOMTR J Icom America Inc Corporate Headquarters 2380 116th Avenue N E Bellevue WA 98004 U S A Phone 206 454 8155 Fax 206 454 1509 Telex 152210 ICOM AMER BVUE Customer Service Phone 206 454 7619 Regional Customer Service Centers 3150 Premier Drive Suite 126 Irving TX 75063 U S A Phone 214 550 7525 Fax 214 550 7423 1777 Phoenix Parkway Suite 201 Atlanta GA 30349 U S A Phone 404 991 6166 Fax 404 991 6327 Icom Canada A Division of icom America inc 3071 5 Road Unit 9 Richmond B C V6X 2T4 Canada Phone 604 273 7400 Fax 604 273 1900 Icom Europe GmbH Communication Equipment Himmelgeister Str 100 4000 D sseldorf 1 W Germany Phone 0211 346047 Fax 0211 333639 Telex 8588082 ICOM D Icom Australia Pty Ltd Incorporated In Victoria 7 Duke Street Windsor Victoria 3181 Australia P
16. 2564081 S 55 8 5 nlz 5 2563770 E ers 8 Sh C e S 504001 0 6 FH STR 0 00 100k Tz el 5 prn K 30M 15 ME gt 1 BUR IRL E E S id R 515 FT Sach 52 1 sl amp 11 D HSMBBAS Srg B TA7368F SQL CLOSE 0 2V 8 SQL CLOSE 0 5V SQL CLOSE OV H SQL OPEN 3 SQL OPEN 3 4V PUSH KEY 3 1V PUSH MONI KEY 3 6V 5 T E 8 C T 7 eh i SQL CLOSE OV SOL CLOSE OV gh x ara SPERA SV SOL OPENG Bv SQL OPEN 4 2V X 454249220805 PUSH KEY 4 8V PUSH MONI KEY 7 3V PUSH MONI KEY 4 3V sial SE SI DET UNIT PTT m 01 58748 RX TX 5 2V MIC UNIT y amp 02 RX 0V 5 OTAIGGEU 11 5 5218 amp a x RX OV SS DICI44EU 5 2 007 a D 0 E e G IE TX 2 5V es RI R5 Di 1 62k 39k STE sl 5 D s Se 4 E S Too d R3 180k amp s 5 aa sl 922 c 5 gt 33 Rome pud 0 22 101 02 04 07 08 8 ala 120 201 02 04 d 4 07 08 ovo 270 805 uPD4094 BG Leg 5 RX 0V TX 2 9V TX 0 6V H 52 L ee ne ee nee 5 10 UNIT S 5
17. 4030006710 4030006510 4030006850 4030006510 0910020007 PRT UNIT 1520000200 1530002280 1790000680 1790000670 1730000520 1790000590 1730002160 7030003250 7030003380 7030003440 7030003600 7030003470 7030003520 7030003320 7030003440 7030003250 4030006860 Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Trimmer Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Tantalum Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Transistor Transistor Diode Diode Zener Diode Zener Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Ceramic P C Board 4030006860 Ceramic C1608 JB 1H 102 4030006860 Ceramic C1608 JB 1H 102 4030006510 Ceramic C1608 SL 1H 5 4030006710 Ceramic C1608 SL 1H 470J T 4030006900 Ceramic C1608 JB 1E 103 4030006860 Ceramic C1608 JB 1H 102 4030006760 Ceramic C1608 SL 1H 121J T 4030006860 Ceramic C1608 JB 1H 102 C1608 JB 1H 102K T C1608 SL 1H 050 C1608 SL 1H 050 C1608 JB 1H 102 C1608 SL 1H ORSC T C1608 SL 1H 040 C1608 SL 1H 070D T C1608 SL 1H 070D T C1608 SL 1H 150J T C2012 1E 104Z T C2012 1E 1042 C1608 JB 1H 471K T C1608 JB 1H 102K T ECRJA020E12W C1608 CH 1H 150J T C1608 CH 1H 390J T C1608 JB 471 C1608 JB 1H 471K T C2012 1E 104
18. 5040001110 7700000860 3020000120 Ceramic LED LED LED LED Microphone Lithium Batter CL2020 1VC C1608 JF 1H 22327 LCD2424 LNO1401C Q LNO1401C SLM 238VMWS WM 62A LOGIC LGC UNIT ORDER 2260000890 2260001150 2230000770 2230000770 2260001150 2260001150 2260001 150 2510000450 0910021535 0910021422 0910021413 0910021432 0910021322 0910021912 6910003110 8930014860 Encoder Switch Switch Switch Switch Switch Switch Speaker Board Board P C Board Board F P C Board Board Lead Frame LCD Contact Strip SRBM1L040A TUNING CONTROL SW 103 SKHUPCO07B LIGHT SW 104 SKHUPE004B MONITOR SW 104 SKHUPEO04B PTT SW 103 SKHUPCO07B FUNC SW 103 SKHUPCO07B V M SW 103 SKHUPC007B EAS 3P123D B 1920E LOGIC LGC 19278 TUNING B 2106C RES 2107 PTT 21088 2111B HFB2 0 0 7 8 SRCN 752 MAIN MIN UNIT 1160000060 1750000080 1790000490 1790000490 1790000590 1750000130 1790000450 1790000680 2010000230 6150003210 6110002000 6110002120 6110002120 6110002070 6110002000 6110002070 6110002010 6200000750 6110002070 6200000760 6200000260 Diode Diode Diode Diode Diode Diode Diode Diode Filter C
19. z C30 001 6 560 72 o R amp 470 TIT 65 0001 AA C4 22 C6 0 001 C3 47P xD gt 99 1 2 lt C2 0 007 T 22 xz ow lt C28 18 UNIT R2 100 07 1 2 a 25 210 SN pea sv 15 1 24 100P 8 CH 4P 7 D 15 59 L 4 m s 8 Na als 5 sf 375 gt 818 71 75 k 3 4v S 5 5 el c5 C39 We Ov d r OSP 07 Co GE QSP 05 g 2 4 4 g 161 SJE r E 9 19 333 mcov E D TX 4 4V 05 RS 47 25 4403 02 LONG RX 4 TV z 5 25 302 NG amp m 124 ec S 8 2 ch 355 44 09 5 2 12 B x els Vi Rl 25 52 98 DTA1G3ZU 8 5 Del CH Cay r 4 DICI44EU 3 5 7 0 5 05 BI i tats 1 107 585183 SE 2849 5 M54959FP gt sl M 2 5 NE oen 5 R13 si 45 580 his N 2564403 1 5 o Moe L 6V 145MHz Lock ov o1 9 29 UNLOCK oss R raves O 8 RIS 470 m 12 5 e NG 1 6 45 ST 03 Q4 6 05 06 C27 01 2966081 258798 y 2504081 2541162 At RX 13 3V 25 5 8 81 1513 2 2 PLL UNIT 00909990997 BON Rx ov 07
20. 473 47 Resistor ERJSGEYJ 473 V 47 Resistor ERJ3GEYJ 473 V 47 1530002060 Transistor 25 4081 R 7030003640 Resistor ERJ3GEYJ 473 V 47 kQ 1590000720 Transistor DTA144EU 7030003800 Resistor ERJ3GEYJ 105 V 1 1560000540 FET 2SK880 Y 7030003800 Resistor ERJ3GEYJ 105 V 1 1530002060 Transistor 25 4081 7030003800 Resistor ERJ3GEYJ 105 V 1 1590000660 Transistor DTC144TU 7030003800 Resistor ERJ3GEYJ 105 V 1 1590000690 Transistor IMDS 7030003800 Resistor ERJ3GEYJ 105 V 1 7030003720 Resistor ERJ3GEYJ 224 V 220 7030003720 Resistor ERJ3GEYJ 224 V 220 1730002160 Zener 02CZ5 1 Z 7030003720 Resistor ERJ3GEYJ 224 V 220 1160000060 Diode DAN202U 7030003800 Resistor ERJ3GEYJ 105 V 1 1750000170 Diode DA115 U S A Asia only 7030003720 Resistor ERJ3GEYJ 224 V 220 1750000170 Diode DA115 Europe 7030003720 Resistor 224 V 220 1160000060 Diode DAN202U Italy 7030003720 Resistor ERJ3GEYJ 224 V 220 1750000160 Diode DA114 Australia 7030003720 Resistor 224 V 220 1750000170 Diode DA115 Europe Australia 7030003800 Resistor ERJ3GEYJ 105 V 1 MO 1750000160 Diode DA114 Italy 7030003720 Resistor ERJ3GEYJ 224 V 220 1160000060 Diode DAN202U 7030003800 Resistor ERJ3GEYJ 105 V 1 1160000060 Diode DAN202U 7030003800 Resistor ERJ3GEYJ 105 V 1 1710000600 Diode 155254 U S
21. BEFORE SERVICING m REQUIRED TEST EQUIPMENT EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE AC power supply Output voltage 13 8 V DC Input impedance 50 or better Current capacity 2 Aor more AC milli voltmeter Measuring range gt 10 10 RF power meter terminated type Frequency counter impedance 500 Attenuator Power attenuation 30 or 40 dB Frequency accuracy 1 ppm or better Capacity 10 W or more Measuring range O 10 kHz Standard signal Frequency range 0 1 160 MHz Measuring range 1 10 W Impedance 80 SWR Less than 1 2 1 Sensitivity 100 mV or better Distortion meter Measuring range 0 1 20 96 generator 550 Output level 127 17 dBm Frequency range 120 160 MHz Audio generator Frequency range 3009 3000 Hz Output level 1 500 mV Frequency range 0 1 160 MHz Oscilloscope Frequency range DC 20 MHz FM deviation meter Frequency minimum 160 MHz Measuring range 0 01 10V 0 1 uV 32 mV lll CONNECTION Attenuator 30 or 40 dB Standard signal generator FM deviation meter RF power meter 10 W 50 AC power supply 13 8 V 2 A Distortion meter Speaker CAUTION DO NOT connect the signal generator while transmitting to DC 13 8 V to SP to the antenna connector to MIC Audio generator 6 2 PLL ADJUSTMENT ADJUST
22. DA204U 4550003040 Tantalum TEMSVB2 09 106M1 8L 1790000450 Diode MA862 4030006860 Ceramic C1608 JB 1H 102K T MAIN MIN UNIT ORDER 4030006860 Ceramic C1608 JB 1H 102K T Ceramic 1608 JB 1E 103K T Ceramic C1608 SL 1H 220J T MBD UNIT Ei ORDER DESCRIPTION 1530002560 Transistor 25 4403 3 1530002560 Transistor 25 4403 3 1530002560 Transistor 25 4403 3 1590000650 Transistor DTA144TU Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Tantalum Tantalum Ceramic 4030006570 4030006670 4030006540 4030006640 4030006580 4030006580 4030006550 4030006710 4030006580 4030006860 4030006860 4550002890 4550002890 4030006860 4510001380 Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic 4510003160 4030006860 Ceramic Ceramic Electrolytic Electrolytic C1608 SL 1H 060D T C1608 SL 1H 270J T C1608 SL 1H 030 1608 SL 1H 180J T C1608 SL 1H 220J T C1608 SL 1H 330J T C1608 SL 1H 180J T C1608 SL 1H 0700 C1608 SL 1H 070D T C1608 SL 1H 040 C1608 SL 1H 470 C1608 SL 1H 070D T C1608 JB 1H 102 C1608 JB 1H 102 TESVA 1A 225M1 8L TESVA 1A 225M1 8L C1608 JB 1H 102 25 55 C1608 1H 102K T C1608 JB 1H 102K T C1608 SL 1H 220J T C1608 SL 1H 220J T C1608 JB 1H 102
23. PLL output signal from VCO oscillation Q7 selects the transmit or receive VCO circuit PHASE CHARGE LOOP DIVIDER m DETECTOR ET PUMP H FILTER 4 3 PLL CIRCUITS 4 3 1 GENERAL PLL UNIT The PLL circuit using a one chip modulus prescaler IC1 directly generates the transmit frequency with the Tx VCO Q2 and the 1st LO frequency with the Rx VCO Q1 The modulus prescaler IC1 sets the dividing ratio based on serial data from the CPU and compares the phases of a VCO signal and the reference oscillator frequency It detects the out of step phase and outputs it reference frequency is oscillated at X1 4 3 2 REFERENCE OSCILLATOR CIRCUIT PLL UNIT A reference frequency is produced by the local oscillator section and X1 C22 provides frequency control 4 3 3 LOOP FILTER CIRCUIT PLL UNIT Phase detected signals from IC1 pin 13 are converted to DC voltage by a lag lead loop filter R17 R18 C28 C29 The frequency at which the VCO oscillates is controlled by varactor diodes 01 02 voltage PLL lock voltage is provided through the buffer amplifier Q6 Q10 provides Rx bandpass filter tuning BUFFER Q4 PLL OUTPUT BUFFER BUFFER Q3 Q5 4 3 5 UNLOCK SENSOR CIRCUIT PLL UNIT When the PLL circuit is unlocked IC1 pin 14 is HIGH and the HIGH signal is applied to the CPU pin 7 as an uniock signal 4 4 POWER SUPPLY CIRCUITS 4 4 1 VOLTAGE LINES DESCRIPTION The co
24. amp 8AS TR 1790000490 Diode DET UNIT 2020000550 6070000060 6050005010 7030003480 7030003440 7030003520 7030003460 7310002590 7030003550 7030003560 7030003480 7030003400 7030003520 7030003730 7030003680 7030003800 7030003630 7030003400 7030003400 7030003440 7030003840 7030003490 7030003520 7030003680 7030003760 7030003630 7030003640 7030003430 7030003730 4030004760 4030006740 4030004760 4030004760 4030004760 4030006640 4030006720 4030006860 4030006860 4030006850 4030006860 4030006860 4030006860 4030004760 4030006890 4030006900 4030006860 4030005110 0910020415 6910003110 Ceramic Discriminator Crystal Resistor Resistor Resistor Resistor Trimmer Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic P C Board Lead Frame CFUM455E CDBM455C7 CR 214 ERJ3GEYJ 222 V 2 2 kQ ERJ3GEYJ 102 V 1 ERJ3GEYJ 472 V 4 7 ERJ3GEYJ 152 V 1 5 kQ RV 109 222 ERJ3GEYJ 822 V 8 2 kQ ERJ3GEYJ 103 V 10 ERJ3GEYJ 222 V 2 2 kQ ERJ3GEYJ 471 V 470
25. is equipped with this function When the PTT switch is quickly pushed 2 times or when the PTT switch is pushed with the LIGHT switch pin 79 of the CPU TONE OUT outputs a 1750 Hz tone signal R15 adjusts the 1750 Hz tone deviation The signal is also output to the AF UNIT via R12 4 5 3 SUBAUDIBLE TONE ENCODER CIRCUIT This function can be activated only when an optional UT 50 TONE SQUELCH UNIT or UT 51 PROGRAMMABLE TONE ENCODER UNIT is installed A tone signal is applied to the splatter filter circuit on the MIC UNIT via the TONE signal line R10 on the UT 50 and R5 on the UT 51 adjust the subaudible tone deviation 4 5 4 DTMF ENCODER CIRCUIT LGC UNIT This function can be activated only when the matrix KEYS1 KEYI1 is OPEN an optional UT 49 DECODER UNIT is installed Pins 70 and 71 of the CPU TONEC TONER output a DTMF code signal R16 adjusts the DTMF code signal deviation The signal is also output to the AF UNIT via R17 4 5 5 DISPLAY BACKLIGHT CIRCUIT LGC UNIT When the LIGHT switch is pushed pin 77 of the CPU outputs HIGH The signal is applied to Q1 to light up the backlight LEDs DS2 DS3 4 5 6 CPU RESET CIRCUIT LGC UNIT IC3 detects 5 voltage When the 5 voltage line becomes 5 turns INTO HIGH and the CPU restarts operation The CPU is reset when IC1 pin 76 becomes HIGH The AND gate 4 outputs a reset signal when both input terminals
26. pin 2 functions as the microphone amplifier and the limiter The output signals from pin 1 pass through the splatter filter circuit IC1 pins 5 and 6 where signals of 3 kHz and above are attenuated pin 7 then outputs the signals The signals are applied to the modulation circuit PLL UNIT D2 in the VCO to produce an FM signal The VCO circuit Q2 L2 D2 on the PLL UNIT oscillates the transmit frequency with AF signal modulation 4 2 2 DRIVE AMPLIFIER MIN UNIT The VCO output buffer amplified at Q5 on the PLL UNIT is applied to the the transmit receive switching circuit 014 on the MIN UNIT VCO output is then amplified at the predrive amplifier Q7 and the drive amplifier Q6 The voltage controlled by the APC circuit is applied to the collector of Q6 and Q7 to protect the RF power module from damage by an antenna mismatch 4 2 3 RF POWER AMPLIFIER MIN UNIT IC1 is a power module which provides stable 5 W output power An RF signal from the drive amplifier Q6 is applied to IC1 pin 1 The amplified signal is output from pin 4 and applied to the antenna connector through the diode Switching and low pass filter circuits PLL UNIT Fig 2 4 2 4 2 4 CIRCUIT MIN AND UNITS The APC circuit protects the power module from a mismatched output load and selects HIGH and LOW output power The output power level from the power module is detected a
27. the PTT switch 10 AND MIC UNITS R5 Output power adjustment IO UNIT MIC UNIT R13 Frequency deviation adjustment LGC UNIT R16 DTMF tone frequency deviation adjustment ep g Lo R15 Tone call frequency EL deviation adjustment i IETIETIETII 7 BOARD LAYOUTS 7 1 LOGIC LGC UNIT e TUNING BOARD TUNING CONTROL DND UNIT HN AF2 vo AF UNIT RES BOARD dach OM n z wh gt i x 5 t lo LOGICILGC UNIT to LOGICILGC UNIT PTT BOARD LOGIT ILG C UNIT Loc UNIT MIZZ IMICZI MICE MICE MONITOR PTT LOGIC LGC UNIT TOP VIEW t TUNING CONTROL BOARD KEYS Port locations differ depending on varid below Te U S A ASIA AUSTRALIA e LOGIC LGC UNIT BOTTOM VIEW Symbol 5 12 DA114 DA115 Symbol AV Symbol AL 02CZ5 1 Z 02 I 04 U S A Asia 05 Europe 114 010 011 05 Australia m i D6 D6 Europe Australia 25C4081 25 880 Y Symbol Symbol BASE SOURCE COLLECTOR GATE EMITTER DRAIN Q1 04 Q3 DA204U Symbol K D14 D15 DTA144EU Symbol 16 COLLECTOR EMITTER Q2 03 05 Italy 07 08
28. to IC3 103 controls R 5S regulator Q5 02 R 5S turns OFF during power saved period or transmitting 4 4 4 CHARGING CIRCUIT PRT UNIT Voltage from the DC 13 8V jack is applied to current control circuit Q1 Q2 D5 06 to charge an attached battery pack except the BP 85 This circuit charges the battery pack in approx 15 hours Over voltage protector D4 decreases the transceiver circuit damage from over voltage and reverse polarity connections of the power supply 4 4 4 5 OTHER CIRCUITS 4 5 1 S RF INDICATOR CIRCUIT DET MIN AND LGC UNITS A portion of the 2nd IF signal is output from 12 on the DET UNIT via the SD signal line The signal is rectified at D1 on the MIN UNIT to obtain an S indicator signal The S indicator signal is applied to IC2b pin 5 on the LGC UNIT IC2b pin 6 receives an S indicator reference signal from the CPU KEYSO 3 terminals via the D A converter R11 R37 R40 The CPU terminals increase the reference signal level When the D A converted level becomes greater than the S indicator level IC2b 7 becomes LOW The CPU detects the signal strength level using the KEYSO 3 terminal outputs and indicates the signal strength level on the function display when receiving the LOW signal While transmitting the S RF indicator indicates the selected output power S INDICATOR CIRCUIT Fig 4 4 5 2 1750 Hz TONE CALL CIRCUITS LGC UNIT Only the IC 2SE
29. 0000620 1790000640 1790000640 1790000620 6150003120 6150003120 6150003430 7030003560 7030003680 7030003240 7030003560 7030003280 7030003560 Transistor Transistor Transistor Transistor Transistor Transistor Resistor Resistor Resistor Resistor Resistor Ceramic Electrolytic Ceramic Electrolytic Ceramic Electrolytic Ceramic Ceramic Ceramic Ceramic Electrolytic P C Board Lead Frame ORDER Transistor Transistor Diode Diode Diode Diode Coil Resistor Resistor Resistor Resistor Resistor Resistor 81250HG RD TC4S01F 4501 25 4081 25 1576 25 4081 5 258798 2564081 S 2SA1162 GR DA114 DA114 DA114 ERJ3GEYJ 471 V 470 ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 103 V 10 103 V 10 ERJ3GEYJ 103 V 10 C1608 JB 1H 471 16 RC2 22 uF C1608 JB 1H 471K T 6R3 MS5 47 uF C1608 JB 1H 471 6 3 RC2 47 C1608 JB 1H 471 C1608 JB 1H 471K T C1608 JB 1H 471 C1608 JB 1H 471K T 6 3 RC2 47 uF B 1923E HFB2 0 0 7 8 25 4405 3 25 4403 3 MA77 MA363B MA77 MA363B MA363B 77 16 321 65 321 16 378 ERJ3GEYJ 103 10 ERJ3GEYJ 104 100 ERJ3GEYJ 220 V 220 ERJ3GEYJ 103 V 10 ERJ3GEYJ 470 V 47 Q ERJ3GEYJ 103 V 10 RF UNIT APC UNIT ORDER 4030006850 Ceramic C1608 JB 1H 471 4030006850 Ceramic C1608 JB
30. 003490 Resistor ERJ3GEYJ 272 2 7 4510002650 Electrolytic 16 MS7 100 uF 7030003380 Resistor ERJ3GEYJ 331 V 330 7030003200 Resistor ERJ3GEYJ 100 V 10 7030003280 Resistor ERJ3GEYJ 470 V 47 0910021483 P C Board B 1926C 7030003200 Resistor ERJ3GEYJ 100 V 100 7030003310 Resistor ERJ3GEYJ 820 V 82 0 7030003320 Resistor ERJ3GEYJ 101 V 100 Q 7030003410 Resistor ERJ3GEYJ 561 V 560 7030003520 Resistor ERJ3GEYJ 472 V 4 7 kQ 7030003520 Resistor ERJ3GEYJ 472 V 4 7 7030003800 Resistor ERJ3GEYJ 105 V 1 7030003560 Resistor ERJ3GEYJ 103 V 10 7030003720 Resistor ERJ3GEYJ 224 V 220 7030003680 Resistor ERJ3GEYJ 104 V 100 7030003280 Resistor ERJ3GEYJ 470 V 47 Q SC1096 4550002890 Tantalum TESVA 1A 225M1 8L 4030006860 Ceramic C1608 JB 1H 102 1560000550 FET 2SK882 Y 4030006710 Ceramic C1608 SL 1H 470J T 1510000510 Transistor 28A1576 R 4030006660 Ceramic C1608 SL 1H 220J T 1590000430 Transistor DTC144bEU 4030006860 Ceramic 1608 JB 1H 102 1530002340 Transistor 25 2954 28 4030006860 Ceramic C1608 JB 1H 102K T 1530002560 Transistor 25 4403 3 4030006620 C1608 SL 1H 1204 1510000510 Transistor 2SA1576 R 4550000460 Tantalum TESVA 1C 105M1 8L 4030006860 Ceramic C1608 JB 1H 102K T 4030006860 Ceramic C1608 JB 1H 102K T 1790000590 Diode MA110 4030006860 Ceramic C1608 JB 1H 102K T 1750000130 Diode
31. 08 SL 1H 470J T 4550002950 Tantalum TESVA 0J 335M1 8L 4030004760 Ceramic C2012 1042 T B 2014E HFB2 0 0 7 8 0910021395 6910003110 Board Lead Frame UNIT pPD4094BG T1 pu PD4094BG T1 4501 1130000830 1130000830 1130004170 DTC144EU DTC144EU 1590000430 1590000430 Transistor Transistor ERJ3GEYJ 154 V 150 ERJ3GEYJ 104 V 100 ERJ3GEYJ 224 V 220 kO RV 108 7030003700 7030003680 7030003720 7310002580 Resistor Resistor Resistor Trimmer 15 05 104 ERJ3GEYJ 333 V 33 224 V 220 Resistor Resistor 7030003620 7030003720 4030006860 Ceramic C1608 JB 1H 102K T 2070C 2163 C2 HFB2 0 0 7 8 PT2 0 0 7 16 5 Board P C Board Lead Frame Lead Frame 0910021443 0910022130 6910003110 6510008580 MIC UNIT ORDER 1110001540 IC 5218 71 DTC144EU DTA144EU Transistor Transistor 1590000430 1590000720 7030003640 Resistor ERJ3GEYJ 473 47 7030003880 Resistor ERJ3GEYJ 244 V 240 kQ 7030003710 Resistor ERJ3GEYJ 184 V 180 kQ 7030003330 Resistor ERJ3GEYJ 121 V 120 Europe Italy Australia Asia 7030003370 Resistor ERJ3GEYJ 271 V 270 Q 0 5 7030003670 Resistor ERJ3GEYJ 823 V 82 7030003720 Resistor ERJ3GEYJ 2
32. 2 C2012 1E 1042 TESVA 1 105M1 8L C1608 JB 1H 471K T C1608 JB 1H 471 C1608 SL 1H 5 C1608 SL 1H 050 C1608 SL 1H 050 C1608 SL 1H 470J T C1608 SL 1H 470J T C1608 SL 1H 470J T C1608 SL 1H 470J T C1608 SL 1H 5 C1608 JB 1H 471 C1608 SL ORSC T B 1911G 28B798 DK 25 4081 SB20 03P TD 5 07 03 20 2 110 TW 02 25 1 2 ERJ3GEYJ 270 27 0 ERJ3GEYJ 331 330 ERJ3GEYJ 102 V 1 223 22 ERJ3GEYJ 182 V 1 8 ERJ3GEYJ 472 4 7 ERJ3GEYJ 101 V 100 ERJ3GEYJ 102 V 1 ERJ3GEYJ 270 27 1608 1 102 4030006860 C1608 JB 1H 102 0910021454 P C Board B 2113D 9 OPTIONAL UNITS 9 1 UT 50 TONE SQUELCH UNIT RX OVIWITH DIFFERENT RXx 3 8V WITH SAME oF a RX OVIWITH DIFFERENT TONE 25C4OBIR RX 5 0V WITH 9 2 01 51 ENCODER UNIT 9 3 UT 49 DECODER UNIT E DTAI44EU 2 6 i Qa Lal mee A j 02 RI L io ov pa CSA3 58MGC300CD S 3 dg 0 1 10 VOLTAGE DIAGRAM INITIAL MATRIX LGC UNIT KEYS3 KEYS2
33. 24 V 220 kQ 7030003680 Resistor ERJ3GEYJ 104 V 100 kQ 7030003740 Resistor ERJ3GEYJ 334 V 330 kQ 7030003630 Resistor ERJ3GEYJ 393 V 39 7030003630 Resistor ERJ3GEYJ 393 39 7030003440 Resistor ERJ3GEYJ 102 1 7030003710 Resistor ERJ3GEYJ 184 V 180 7310002600 Trimmer RV 110 RHO3A3AS4X0AA 473 7030003590 Resistor 183 18 7030003600 Resistor ERJ3GEYJ 223 V 22 kQ 7510000180 Thermistor DTN T203S223L 7030003570 Resistor ERJ3GEYJ 123 V 12 kQ 4030006860 Ceramic C1608 JB 1H 102K T 4030006880 Ceramic C1608 JB 1H 472K T 4030006850 Ceramic C1608 JB 1H 471K T 4030006850 Ceramic C1608 JB 1H 471K T 4550000550 Tantalum TESVA 1V 224M1 8L Europe Italy Australia Asia 4550000530 Tantalum TESVA 1V 104M1 8L U S A 4030008470 Ceramic C1608 JB 1H 272K T 4030006900 Ceramic C1608 JB 1E 103K T 4030006760 Ceramic C1608 SL 1H 121J T 4510001850 Electrolytic 16 MS5 4R7 uF 4030006880 Ceramic C1608 JB 1H 472 4030006850 Ceramic C1608 JB 1H 471 4030006850 Ceramic C1608 JB 1H 471K T B 1922C HFB2 0 0 7 8 P C Board Lead Frame 0910020243 6910003110 DET UNIT TK10487MT1 25 4081 S 25 3770 3 25 4081 FMG2 2564081 S Transistor Transistor Transistor Transistor Transistor 1530002280 1530002020 1530002280 1590000830 1530002280 HSM
34. 474 470 ERJ3GEYJ 103 10 ERJ3GEYJ 222 V 2 2 393 39 ERJ3GEYJ 393 39 Resistor Resistor Resistor Resistor Resistor Resistor Resistor AF UNIT 7030003480 Resistor ERJ3GEYJ 222 V 2 2 7030003800 Resistor ERJ3GEYJ 105 V t MO 7030003320 Resistor ERJSGEYJ 101 V 100 7030003200 Resistor ERJ3GEYJ 100 V 10 7030003420 Resistor ERJ3GEYJ 681 V 680 0 7030003420 Resistor ERJ3GEYJ 681 V 680 0 7030003600 Resistor ERJ3GEYJ 223 V 22 7030003760 Resistor ERJ3GEYJ 474 V 470 7030003560 Resistor ERJ3GEYJ 103 V 10 7030003340 Resistor ERJ3GEYJ 151 V 150 7030003520 Resistor ERJ3GEYJ 472 V 4 7 4030006900 Ceramic C1608 JB 1E 103 4030006900 Ceramic C1608 JB 1E 103K T 4030006870 Ceramic C1608 JB 1H 222K T 4030006860 Ceramic C1608 JB 1H 102K T 4030004760 Ceramic C2012 1E 1042 4030005110 Ceramic C2012 B 1E 473K T 4030006860 Ceramic C1608 JB 1H 102K T 4510001340 Electrolytic 10 MS5 33 pF 4030005110 Ceramic C2012 1E 473 4030006850 Ceramic C1608 JB 1H 471K T 4510003180 Electrolytic 6 3 RC2 100 uF 4550003290 Tantalum TESVA 0G 475M1 8L 4030006860 Ceramic C1608 JB 1H 102 4030006860 Ceramic C1608 JB 1H 102 4030005110 Ceramic C2012 B 1E 473K T 4030006710 Ceramic C16
35. 930014880 752 Board holder 8930014922 752 Release button 2 Switch MONITOR PTT EN 8930014820 Release spring M 9 2230000770 2 SW 104 SKHUPEO04B 8930014810 752 SP plate 6910003920 LCD LCD2424 incl shield 8930014830 SP ground lag 2510000450 Speaker EAS 3P123D 8810005740 Screw FH 0 2 3 8930014860 LCD contact strip SRCN 752 8930014210 Ground spring Screw abbreviations PH Pan head FH Flathead Self tapping screw ZK Black QTY e 5 1 5 2 MAIN MIN UNIT AND TOP PANEL MAIN MIN UNIT TOP PANEL 9 _ 1 sons s soewenno onera 8930014852 752 Battery terminal 2 Variable resistor VOL 7210001440 1 RK097111101NA 10 8510005850 752 PLL case 8510005830 CO PLL cover Variable resistor SQL 60 7210001450 1 RK0971110051A 10KB 8510005820 751 PLL cover 8930014911 LAMP switch 1 rubber Screw abbreviations head ZK Black Nickel ACCESSORIES Teens ORP waaka e mena D lees ___ Screw abbreviations BuH Button head BS Brass ZK Black 6 ADJUSTMENT PROCEDURES 6 1 PREPARATION
36. 945 0910020185 1946 6910003110 Lead Frame 2 0 0 7 8 1790000530 Diode 33 1790000540 Diode 38 1790000660 Diod MA728 APC UNIT E ode 6050005790 Crystal CR 257 1520000270 Transistor 2581182 Q 1530002280 Transistor 25 4081 S 1590000620 Transistor FMS1 1520000270 Transistor 25 1182 Q 1530002280 Transistor 25 4081 S 6110001580 Coil LA 238 6110002150 Coil LA 385 6200000860 Coil LQH 3N 1R8M 6200000820 Coil LQH 3N R82M 6200000260 Coil LQN 2A R10K 6200000260 Coil LQN 2A R10K 1750000130 Diode DA204U 1160000050 Diode DAP202U 7030003450 Resistor ERJ3GEYJ V 1 2 7030003320 Resistor ERJ3GEYJ 100 7030003200 Resistor ERJ3GEYJ 100 V 100 7030003280 Resistor ERJ3GEYJ 470 47 0 7030003450 Resistor ERJ3GEYJ 122 V 1 2 7030003610 Resistor ERJ3GEYJ 273 27 7030003200 Resistor ERJ3GEYJ 100 V 100 7030003660 Resistor ERJ3GEYJ 683 V 68 kQ 7030003660 Resistor ERJ3GEYJ 683 V 68 kQ 7030003650 Resistor ERJ3GEYJ 563 56 7030003420 Resistor ERJ3GEYJ 681 V 680 0 7030003390 Resistor ERJ3GEYJ 391 V 390 Q 7030003420 Resistor ERJ3GEYJ 681 V 680 7030003560 Resistor ERJ3GEYJ 103 V 10 7030003720 Resistor ERJ3GEYJ 224 V 220 7030003400 Resistor ERJSGEYJ 471 V 470 Q 7030003500 Resistor ERJ3GEYJ 332 V 3 3 7030003550 Resistor ERJ3GEYJ 822 V 8 2 kQ 7030003320 Re
37. A 7030003640 Resistor ERJ3GEYJ 473 V 47 1750000160 Diode DA114 7030003800 Resistor ERJ3GEYJ 105 V 1 MQ 1750000160 Diode DA114 7030003640 Resistor ERJ3GEYJ 473 V 47 kQ 1160000050 Diode DAP202U 7030003200 Resistor ERJ3GEYJ 100 V 10 9 1750000130 Diode DA204U 7030003560 Resistor ERJ3GEYJ 103 V 10 1750000130 Diode DA204U 7030003560 Resistor ERJ3GEYJ 103 V 10 6060000260 Crystal CSB800J220 4030006860 Ceramic C1608 JB 1H 102K T 6050005800 Crystal DT 26S 32 768KHZ 4030006850 Ceramic C1608 JB 1H 471 4030006710 Ceramic C1608 SL 1H 470J T 4030006800 Ceramic C1608 SL 1H 221J T 7030003520 Resistor ERJ3GEYJ 472 V 4 7 4030006800 Ceramic C1608 SL 1H 221J T 7030003480 Resistor 222 V 2 2 4030004760 Ceramic C2012 1E 1042 7030003280 Resistor ERJ3GEYJ 470 V 47 Q 4550000770 Tantalum TESVC 0J 226M 12L 7030003360 Resistor ERJ3GEYJ 221 V 220 Q 4030006850 Ceramic C1608 JB 1H 471 7030003720 Resistor ERJ3GEYJ 224 V 220 kQ 4030007030 Ceramic C1608 CH 1H 150J T 7030003880 Resistor ERJSGEYJ 244 V 240 kO 4030007030 Ceramic C1608 CH 1H 1504 7030003720 Resistor ERJ3GEYJ 224 V 220 4030004760 Ceramic C2012 1E 1042 7030003640 Resistor ERJ3GEYJ 473 V 47 kQ 4030004760 Ceramic C2012 1E 1042 7030003650 Resistor ERJ3GEYJ 563 V 56 4030004760 Ceramic C2012 1E 1042 7030003660 Resistor ERJ3GEYJ 683 V 68
38. DTC144TU Symbol 06 05 DAP202U Symbol P D12 IMD6 Symbol 06 COLLECTOR BASE EMITTER BASE COLLECTOR Q 7 2 MAIN MIN UNIT e MAIN MIN UNIT TOP VIEW B 0 RB il Eal m H 1 I 1 1 4 1 I AF UNIT IKA DET UNIT IO UNIT TCH IO UCE UNIT MBO UNIT 2 UNIT Ji PLL UNIT OPTION HSMBBAS Symbol C1 185153 DAN202U DA204U MA852 SB20 03P TD Symbol AS Symbol Symbal K Symbol M11 Symbol SC HSMBBAS D10 D11 014 D7 DA204U 013 02 7 4 e MAIN MIN UN BOTTOM VIEW GND MIC IM SPE Sp vec HN 255 1 TAS BUSY LOGI WNIT s _ SDATA LOSTB SER PLLSTE uL TSOL OPT MICE 2541576 H Symbol BASE COLLECTOR EMITTER 03 08 SS E Lu H s 99 qPSC 1 i C RB Wb af D Jarang GND x d le gem pi H o ARON _ GND 31 Rass c Kei i i e E EE SER 1 Im o ol ess P DUO 2 5 IC BAS SND 22 WE UN i RW i E Li 1 18521 IMUTE eer in 1 DTM MiG 359 op LE Uu iMic veer Ope gr LOUTI Rn
39. K T C1608 JB 1H 102 C1608 SL 1H 101J T C1608 JB 1H 102K T C1608 SL 1H 101J T C1608 SL 1H 101J T C1608 JB 1H 102K T C1608 SL 1H 101J T Electrolytic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Electrolytic Tantalum Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic 4030006850 4030006860 4030006860 4510001350 4550000460 4030006760 4030006860 4030006860 4030006860 4030006860 0910021645 P C Board 1910 1608 1 471 C1608 JB 1H 102K T C1608 JB 1H 102K T C1608 JB 1H 102K T C1608 SL 1H 030 C1608 JB 1H 102K T C1608 SL 1H 100D T Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic 4030006860 4030006860 4030006860 4030006540 4030006860 4030006610 2028C HFB2 0 0 7 8 Board Lead Frame 0910020763 6910003110 AF UNIT 25 4081 2804081 28J106 GR 2581182 Q 25 4081 2804081 R 1530002060 Transistor 1530002060 Transistor 1590000520 FET 1520000270 Transistor 1530002060 Transistor 1530002060 Transistor 1160000050 Diode DAP202U 7030003580 7030003700 7030003760 7030003560 7030003480 7030003630 7030003630 ERJSGEYJ 153 V 15 154 V 150 ERJSGEYJ
40. K T C1608 JB 1H 102K T C1608 JB 1H 102K T 16 RC2 22 uF C1608 JB 1H 102K T C1608 JB 1H 102K T 1530002560 6200000100 6200000100 6200000100 Coil Coil Coil 7030003630 7030003290 7030003630 Resistor Resistor Resistor Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Transistor 25 4403 3 LQN 2A 22NM LON 2A 22NM 2A 22NM ERJSGEYJ 393 V 39 ERJ3GEYJ 560 V 56 ERJ3GEYJ 393 V 39 7030003290 Resistor ERJ3GEYJ 560 V 56 0 7030003340 Resistor ERJ3GEYJ 151 V 150 0 7030003610 Resistor ERJ3GEYJ 273 V 27 kQ 7030003640 Resistor ERJ3GEYJ 473 V 47 7030003440 Resistor ERJ3GEYJ 102 V 1 7030003280 Resistor ERJ3GEYJ 470 V 47 7030003390 Resistor ERJ3GEYJ 391 V 390 7030003650 Resistor ERJ3GEYJ 563 V 56 C1608 SL 1H 150J T C1608 JB 1H 471 C1608 JB 1H 471 C1608 SL 1H 150J T C1608 SL 1H 0 5 C1608 JB 1H 471K T 16 MS5 10 uF C1608 SL 1H 220J T C1608 JF 1H 1032 7 C1608 JB 1H 102K T C1608 SL 1H 1000 C1608 JB 1H 102K T C1608 JB 1H 102K T C1608 JB 1H 102K T C1608 JF 1H 103ZT C1608 JB 1H 471K T C1608 JB 1H 102 C1608 JB 1H 102K T C1608 JB 1H 102K T C1608 JB 1H 102K T 16 55 10 UF TESVA 1C 105M1 8L C1608 SL 1H 121J T C1608 JB 1H 102K T C1608 JB 1H 102K T C1608 JB 1H 102K T C1608 JB 1H 102 C1608 SL 1H 101J T C1608 JB 1H 102 C1608 JB 1H 102
41. MENT ADJUSTMENT CONDITIONS 12 Displayed m 145 00 MHz Connect the PLL Simplex oscilloscope 10 C6 Transmitting L2 side Install the eg plate Readjust L2 and L1 when the lock voltage is changed REFERENCE Displayed frequency 146 00 MHz Loose couple the 146 0000 MHz FREQUENCY Connect the RF power meter or a frequency counter to 50 dummy load the antenna Transmitting connector PLL UNIT _ _ _ M o Reference frequency adjustment C6 Lock voltage CP L1 Lock voltage just t adjustmen L2 6 3 RECEIVER ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE SENSITIVITY Displayed frequency 145 00 MHz Connect the DC Maximum 50 control Max CCW voltmeter to the land Set the signal generator of the S line Level 0 32 uV 117 dBm ER Modulation 1 kHz CIEN Deviation 23 5 kHz Connect the Minimum Receiving distortion meter with 8 load to the SP jack Displayed frequency 145 00 MHz Function S RF indicator the signal generator display Level 0 32 pV 117 dBm Modulation 1 kHz Deviation 23 5 kHz Receiving LGC UNIT HIH 5 line Sensitivity RF MIN AND DET UNITS RF UNIT DET UNIT R5 5 adjustment L1 Sensitivity adjustment L2 LS L1 Sensitivity adjustment MIN UNIT 6 4 TRANSMITTER ADJUSTMENT
42. MF KEYRO code from the UT 49 KEYR3 R30 BUSY Detects a squelch signal The signal is HIGH when the squelch opens R32 29 INTO R33 30 INT1 5 R31 Input port for an optional unit This port becomes when the tone squeich opens UT 50 This port becomes LOW when the UT 51 is installed Detects a signal for the standby mode of the CPU The CPU enters the standby mode when the port becomes LOW The CPU decodes received DTMF code when this port becomes LOW OUTPUT PORT PORT NUMBER 00 01 BUSY LED D2 TONE OUT PIN NUMBER DESCRIPTION Becomes HIGH when the backlight LEDs light up Outputs a signal for lighting up in green the transmit receive indicator This port becomes LOW while receiving squelch opens Outputs a 1750 Hz tone signal 25 only D3 Outputs an enable signal for the TOE UT 49 06 09 Outputs strobe signal for the KEYSO initial and key matrices and D A KEYS3 converter counting signal alternately in an interval Outputs clock signals for serial data R00 SCK R01 STB Outputs a strobe signal for serial data to the expander ICs Outputs serial data synchronized R02 SDATA with the SCK signal R03 Outputs a strobe signal for serial PLL STB data to the PLL IC e OUTPUT EXPANDER OO UNIT
43. Toev 26 m 9 2504403 2502954 LA 227 0 001 185153 I R35 25 10 5 oh a a x ES on 3 p amp 818 g 8 5 88 5 HSMBBAS se Sch S 522 87 o amp Sis for 5 zm 38 8 8 E R28 560 5 lt sh x REALS als 8 5 5 wtaT 8 51 si SIS NI So 3 R 5 VR UNIT d 02 RX L2V ES i 256403 sos g 8X 3 5 02 07 C10 05 2564403 vs oy 2564403 pana ALIOKA CS PSRX 2 2V d eee 5 1 S 13 5 5 5 Hv E arlo o 5 5 5 lt 4 D C33 7P C3 Ap C29 7 d jang 35 x RX OV s 8 74 74 5 5 46 C60 14 13 12 44 226 0 001 44 228 14 228 14 226 0 5 v O c24 22 6 tt af alg si 8 57 APC UNIT C 470P RX I3 2V TX 12 6V RX 0V TX 0 6V 2564081 RX TX I3 5V R3 220k R2 560k 167 D cs p7 5 p Y 042040 25C4403 B 5 97 7P Tr amp 1L8 312 3 2 M54959FP amp 8 amp 5 R13 wo Q3 680 85 2564403 5 L6VU45MHa LOCK OV
44. are HIGH One terminal is HIGH when the MONI switch is pushed and the other INTO line is HIGH when the power is turned ON RESET CIRCUIT 5 MONI Fig 5 a 4 5 7 TRANSMIT RECEIVE INDICATOR CIRCUIT LGC UNIT The transmit receive indicator DS4 uses a 2 input LED and lights up in red or green The indicator lights up in red as the transmit indicator while transmitting using the T 5 voltage The indicator lights up in green as the busy indicator while the squelch opens using CPU pin 78 output via the inverter Q2 4 5 8 CLOCK OSCILLATOR CIRCUIT LGC UNIT IC1 oscillates the 798 642 kHz CPU system clock signal using X1 oscillates the 32 768 kHz clock signal for the built in clock using X2 4 6 CPU PORT ALLOCATIONS LGC UNIT INPUT PORT PIN PORT NUMBER NUMBER DESCRIPTION D4 1 Inputs a signal on the PTT line PTT This port becomes LOW when the PTT switch is pushed D5 2 SIN from IC2b to indicate the CPU counting level to the S indicator in the function display Detects a PLL unlock signal When the signal is HIGH the PLL is unlocked Inputs S meter compared signal UL 011 Detects Vcc voltage BATT D12 D13 Input port for the up down signal of DIAL the tuning control UP DN R10 R13 19 22 These are input ports for the initial KEYIO and key matrices KEYI3 R20 R23 23 26 These are input ports for the DT
45. e variable components Turn them slowly and smoothly 4 DO NOT short any circuits or electronic parts insulated tuning tool MUST be used for all adjustments 5 DO NOT keep power ON for a long time when the transceiver is defective 6 DO NOT transmit power into a signal generator or a sweep generator 7 ALWAYS connect a 30 dB 40 dB altenuator between the transceiver and a deviation meter or spectrum analyzer when using such test equipment 8 READ the instructions of test equipment thoroughly before connecting equipment to the transceiver a 1 1 1 1 1 SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION bb Fb bb A wo N 0000 zl zl zl zl ooo NO omh GQ N Q N TABLE OF CONTENTS SPECIFICATIONS 1 1 INSIDE VIEWS teo o IRE Doe oe RUE dts 2 1 BLOCK DIAGRAM 3 1 CIRCUIT 0 4 1 6 RECEIVER CIRCUITS eege Ma le 4 1 TRANSMITTER CIRCUITS d 4 2 i ro iz E EES 4 3 POWER SUPPLY CIRCUITS nr EE EEN 4 4 OTHER CIRCUITS EE 4 4 CPU PORT ALLOCATIONS LGC UND 4 5 MECHANICAL PARTS AND DISASSEMBLY 5 1 2 CHASSIS PARTS
46. ection of IC1 and is mixed with the 2nd LO signal to be converted to a 455 kHz 2nd IF signal IC1 contains the 2nd mixer local oscillator limiter amplifier and quadrature detector circuits local oscillator section and X2 generate 30 42 MHz for the 2nd LO signal The 2nd IF signal from the 2nd mixer IC1 pin 4 passes through the ceramic filter Fl1 where unwanted signals are suppressed Itis then amplified at the limiter amplifier section IC1 pin 6 and applied to the quadrature detector section IC1 pin 10 and ceramic discriminator X1 to demodulate the 2nd IF signal into an AF signal AF signal output from IC1 pin 11 is applied to the squelch circuit and de emphasis circuit R7 C24 C25 This de emphasis circuit is an integrated circuit with frequency characteristics of 6 dB octave The resulting signal is applied to the AF amp optional tone squelch and optional DTMF decoder circuits 30 42 MHz PLL UNIT 4 1 6 AF AMP CIRCUIT AND VR UNITS The AF signal is applied to Q1 and Q2 on the AF UNIT Q1 is an active filter that functions as a high pass filter to suppress tone signals for the tone squelch operation Q2 is also an active filter that functions as a low pass filter to suppress higher noise signals The filtered signal is applied to the VOL control R1 on the VR UNIT via the AF mute circuit Q3 When the squelch is closed Q3 cuts the AF signal as the AF mute switch The AF signal is p
47. hone 03 529 7582 Fax 03 529 8485 Telex AA 35521 ICOM AS Icom UK Ltd Unit 9 Sea St Herne Bay Kent CT6 8LD U K Phone 0227 363859 Fax 0227 360155 Telex 965179 ICOM G Icom France S a 120 Route de Revel BP4063 31029 Toulouse Cedex France Phone 61 20 31 49 Fax 61 34 05 91 Telex 521515 ICOM FRA 221919 UUM cry Count us Icom Inc 5068 5 on CE Printed in Japan 9 7 6 9 16 Kamihigashi Hirano ku Osaka 547 Japan Copyright 1989 by Icom Inc
48. ircuit employs a two stage A 4 type diode switching system The antenna switching circuit functions as a low pass filter while in receiving and becomes very high impedance while in transmitting 4 1 2 RF CIRCUIT RF UNIT The signals from the antenna switching circuit pass through a bandpass filter L1 D2 and are applied to the RF amplifier Q1 Q2 Amplified signals are reapplied to the other bandpass filter L2 L3 D4 D5 to suppress unwanted signals The signals are applied to the 1st mixer circuit MIN UNIT Q1 D2 D4 and D5 are varactor diodes that track the band pass filters and are controlled by the PLL lock voltage These diodes tune the center frequency of the bandpass filters for wide bandwidth reception and good image response rejection 4 1 3 1ST MIXER CIRCUIT MIN UNIT The signals from the RF circuit are mixed with the 1st LO signal from the PLL UNIT to produce a 30 875 MHz 1st IF signal RECEIVER CIRCUIT BLOCK DIAGRAM NDER ke Tana IC2 BUSY DET UNIT 4 1 4 1ST IF CIRCUIT MIN AND DET UNITS After passing through the matching circuit L1 the 1st IF signal is applied to a pair of crystal filters F11 to suppress out of band signals The 1st IF signal enters the DET UNIT and is amplified at the IF amplifier Q2 and then applied to the 2nd mixer circuit 4 1 5 2ND IF AND DEMODULATOR CIRCUITS DET UNIT The 1st IF signal from Q2 is applied to the 2nd mixer s
49. nnected battery pack voltage or external DC power passed through the power switch Common 5 V converted from the Vcc line at Q1 2 on the REG UNIT using as the reference voltage 5 V controlled by the power saver function This voltage is converted from Vcc at Q3 and 04 on the REG UNIT using 122 output as the reference voltage Receive 5 V controlled by the power saver function and SEND signal This voltage is converted from Vcc at Q5 and Q6 on the REG UNIT using IC3 output as the reference voltage Transmit 5 V controlled by the TMUTE signal line This voltage is converted from Vcc at Q4 and Q5 on the APC UNIT AF amp power source controlled by the AFS signal line R14 R15 provides reference voltage 4 4 2 CPU POWER SUPPLY CIRCUIT LGC UNIT When the power switch is turned OFF and the battery pack is removed a voltage is applied to the CPU pin 73 via R29 from the lithium backup battery BT1 installed in the transceiver to provide backup for the memory contents When the battery pack is installed or externa DC power is applied to the transceiver BT1 is charged using the current regulator Q3 4 4 3 5 AND R 5S SWITCHING CIRCUITS REG UNIT The 25 5 has a power saver to reduce current consumption to approx 1 4 The PSC Power Saver Control signal is applied to IC2 IC2 controls 55 regulator Q3 Q4 D1 to turn ON and OFF 55 voltage PSC and SEND signals are applied
50. oil Coil Coil Coil Coil Coil Coil Coil Coil Coil Coil Coil ORDER DAN202U 155153 2 HSM88AS TR HSM88AS TR 110 DA204U 862 B20 03P TD 30M15B LS 319 LA 226 LA 228 LA 228 LA 227 LA 226 LA 227 LA 224 LQH 3N 4R7M LA 227 LQN 2A 56NM LQN 2A R10K 7030003290 Resistor 560 V 56 Q 7030003480 Resistor ERJ3GEYJ 222 V 2 2 kQ 7030003520 Resistor ERJ3GEYJ 472 4 7 7030003400 Resistor ERJ3GEYJ 471 V 470 7030003410 Resistor ERJ3GEYJ 561 V 560 Q 7030003760 Resistor ERJ3GEYJ 474 V 470 kQ VR UNIT 7030003400 Resistor ERJ3GEYJ 471 V 470 Q 7030003400 Resistor ERJ3GEYJ 471 V 4700 7030003560 Resistor ERJ3GEYJ 103 V 10 7030003450 Resistor ERJ3GEYJ 122 V 1 2 kQ 7030003440 Resistor ERJ3GEYJ 102 1 7210001440 Variable Resistor 97111101 10 7030003440 Resistor ERJ3GEYJ 102 V 1 VOL 7030003600 Resistor ERJ3GEYJ 223 V 22 7210001450 Variable Resistor RK0971110051A 10KB 7510000070 Thermistor ERT D2FHL503S SQL 7030003340 Resistor 151 V 150 0 7030003380 Resistor ERJ3GEYJ 331 V 330 7030003480 Resistor ERJ3GEYJ 222 V 2 2 kQ 4030006860 Ceramic C1608 JB 1H 102K T 7030003550 Resistor ERJ3GEYJ 822 V 8 2 4030006860 Ceramic C1608 JB 1H 102K T 7030
51. ons are subject to change without notice obligation 2 INSIDE VIEWS e MIN UNIT 1st IF filter 211 30M15B RF amplifier circuit RF UNIT AF amplifier circuit AF UNIT 2nd LO crystal X2 CR 214 30 42 MHz circuit UNIT Demodulator circuit DET UNIT Microphone amplifier circuit MIC UNIT Power module IC1 SC1096 L Y En EE e A WEEN ie a P e E a Na Charging circuit PRT UNIT LGC UNIT Backlight LEDs E 052 053 1401 Ou m I saman am GPU clock lt flit pe O CPU he dcs 25 HD404608A20H er L 25 HD404608A16H lt Built in clock crystal SP X2 DT 26S 32 768 kHz um X1 CSB800J220 798 642 kHz Microphone MC1 WM 62A iji H hz gt e i Lithium backup battery BT1 CL2020 1VC CPU reset CPU power supply circuit RES BOARD acum m 1454021 lt q 991 HO1VOIQNI HOIVOIONI Asna 5 4 G 4 lt 754 VIO NIVW MOVd ANJLIVG 9g sq LO apen m 0 XIHIVW La N 21 WILINI N J 7091405 301911934 4 AS Gage 70750 RR SE gt 01931012
52. ower amplified at the AF power amplifier IC1 to drive the speaker The AF voltage regulator Q4 Q6 supplies power to the AF power amplifier The AFS signal from the MIN UNIT controls Q6 and mutes AF output while receiving no signal or no specified tone DTMF signal 4 1 7 SQUELCH CIRCUIT DET UNIT Some of the noise components in the AF signal from IC1 pin 11 are applied to IC1 pin 13 via C11 R8 C13 and C14 The SQL control R2 on the VR UNIT adjusts the pin 13 input level The active filter section in IC1 amplifies noise components of frequencies of 20 kHz and above and outputs the resulting signals from pin 14 Output signals are tified by D1 and are converted to DC voltage The rectified voltage triggers the squelch switch Q1 The collector of Q1 outputs the squelch signal The signal is applied to the CPU IC1 pin 27 on the LGC UNIT through the BUSY signal line CPU outputs the RMUTE and BUSY LED signals The RMUTE signal decoded at the output expander IC1 on the IO UNIT activates the AF mute circuit Q3 on the AF UNIT to cut the AF signal The BUSY LED signal is applied to Q1 on the LGC UNIT turning OFF the receive indicator TRANSMITTER CIRCUIT BLOCK DIAGRAM 4 2 TRANSMITTER CIRCUITS 4 2 1 MICROPHONE AMPLIFIER MIC UNIT AF signals from the built in condenser microphone or from the MIC jack are applied to IC1 pin 3 and are pre emphasized to 6 dB octave through and R4 connected to
53. s 91 02 a3 04 13 6V 05 06 254061 2541576 254087 258798 f 2564087 2541162 15 5 51V RX 13 3V 132v CO au S81250HG RD ZEN a 2 02 50 TRIB 2VG5 vi RI 470 Se A3 a DDA gt 9 5 2v 1 IC3 TC4SO1F 5 8 S 2 215 5 21 T 5 8 x 470P 8 5 2 5 TX 0 6v S E R28 560 3 3 NRX 5 2V 5 TX 0V 5 S 9 8 REG UNIT 8 8113 S f NI 99 2 9V 52V RX 5 0V _ 02 o RXi 2V BX 3 4V DS is 25C4403 2564405 15 363 08 EN x 2 at G2 m E RX 4 4V s s 35 S 2 ag a EN 25 4087 Sgt 53 ox Sg gt 2564403 K RX 1 0V amp S C22 afst hti 22 8 9067 515151 51514181 g ais el amp 5 2 b S NG NET eh 5 e als 5 2 x RX 5 0V SON KE 5 150 L 5191 oe 8 R3 829 8 DTA144TU I 1 47k 470 5 ST RX 5 2V Let 919 470 470 ul ils D zl 5 5 18 18 US E UC b UA E RF UNIT Te 8 i 2 Z FIT 30MISB 25 882 06 254081 54v RI 5 7 2 862 A 8745 Xo C27 0 07 3 4 C28 470P m A c
54. saru ckt Seu 3 0 d338 75 HOLIMS p adoung r 2910 65 lt L 1102 auo ZHOSLL i LINN auo lqipnoqns NIOGLXA 0 0 zuygouze 279 86 NG 2 Ix z 7 uis ee emie i za so v0 mone 3 1 8 4 i OI 1 EI 21 Tid 07010 O10 90 EH 3007 DNK 9 121 0 21 MHOSN3S 99 59 59 av U3AIHO 3Hd gadang gadang DIW A IN Td 145 H ng 345 E EN 905070 1081405 gt 76 AL AN MS LNV eee MSP apara 5 121 o d 31 391 2131 ainn av 2 Bi l Hisce d Z La J LINN NIW LINN 3H 0 3V A ZHWZ7 0E zx gt 4 2 657 VNN31NV zu EE 213005 130 SECTION 3 4 CIRCUIT DESCRIPTION 4 1 RECEIVER CIRCUITS 4 1 1 ANTENNA SWITCHING CIRCUIT MIN AND APC UNITS Received signals enter the antenna connector and pass through a low pass filter L2 L4 C21 C25 signals are applied to the antenna switching circuit D7 D9 L5 L6 and C26 C28 and then to the RF UNIT via the RFIN signal line The antenna switching c
55. sistor ERJ3GEYJ 101 V 1000 7030003520 Resistor ERJ3GEYJ 472 V 4 7 kQ 7030003770 Resistor ERJ3GEYJ 564 V 560 7030003720 Resistor ERJ3GEYJ 224 V 220 7030003600 Resistor ERJ3GEYJ 223 V 22 kQ 7030003670 Resistor ERJ3GEYJ 823 V 82 kQ 7030003440 Resistor ERJ3GEYJ 102 V 1 7030003440 Resistor ERJ3GEYJ 102 V 1 7030003600 Resistor ERJSGEYJ 223 V 22 7030003480 Resistor ERJ3GEYJ 222 V 2 2 7030000440 Resistor MCR10EZHJ 3 3 332 4030006850 Ceramic C1608 JB 1H 471K T 4030006850 Ceramic C1608 JB 1H 471K T 4510003160 Electrolytic 16 RC2 22 uF 4030006850 Ceramic C1608 JB 1H 471 4510001320 Electrolytic 683 55 47 uF 4030006850 Ceramic C1608 JB 1H 471K T 4030006850 Ceramic C1608 JB 1H 471 4510003190 Electrolytic 6 3 RC2 47 uF 4030004760 Ceramic C2012 1E 1042 4030006850 Ceramic C1608 JB 471 4030006750 Ceramic C1608 SL 1H 101J T 4030006540 Ceramic C1608 SL 1H 030 4030006570 Ceramic C1608 SL 1H 0600 PLL UNIT ORDER PRT UNIT Ea PAPE DESCRIPTION 4030006860 4030006560 4030006560 4030006860 4030006510 4030006550 4030006580 4030006580 4030006630 4030004760 4030004760 4030006850 4030006860 4610001260 4030007030 4030007080 4030006850 4030006850 4030004760 4030004760 4550000460 4030006850 4030006850 4030006510 4030006560 4030006560 4030006710 4030006710 4030006710
56. t the APC detector D10 D12 When antenna impedance is matched at 50 Q the detected level is at a minimum However when antenna impedance is mismatched the detected voltage is higher than when matched When the antenna impedance is mismatched the base voltage of Q3b APC UNIT is higher than the other base voltage of Q3a reference voltage decreases the collector current of Q1 using Q2 Collector current of Q1 is used at the drive amplifiers Q6 Q7 on the MIN UNIT Hence when the antenna impedance is mismatched the output power is decreased The output power selecting circuit uses the APC circuit The PCON voltage from the IO UNIT shifts the reference voltage changing the output power to HIGH or LOW 1 3 4 2 5 ANTENNA SWITCHING CIRCUIT MIN UNIT When transmitting 07 and D9 are turned ON The output signal is not applied to the receiver circuit passing through D9 and C60 the low pass filter L2 L4 C21 C25 and then to the antenna The low pass filter suppresses high harmonic components PLL CIRCUIT M54959FP PROGRAM MABLE COUNTER 23 x 4 3 4 VCO CIRCUIT PLL UNIT IC 2SA SE has 2 VCO circuits for transmitting and receiving IC1 pins 10 and 11 output control signals for selecting the receive VCO circuit Q1 L1 D1 or transmit VCO circuit Q2 12 02 Varactor diodes D1 D2 provide frequency control The buffer amplifiers Q3 Q5 do not affect the
57. temperature range Frequency stability Dimensions with BP 82 Weight with BP 82 Mi TRANSMITTER Output power at 13 8 V DC Modulation system Max frequency deviation Spurious emissions Microphone impedance RECEIVER Receive system e Intermediate frequencies Sensitivity e Selectivity Spurious rejection ratio Audio output power Audio output impedance FREQUENCY MODEL VERSION COVERAGE Specifications apply to only 144 00 148 00 MHz F3 FM 5 10 12 5 15 20 25 and 50 kHz 48 plus a call channel 500 6 16 V DC negative ground or battery packs BP 81 BP 85 or battery case BP 90 140 00 150 00 MHz Receive 16 mA power saved 210 mA max audio output Transmit 450 mA LOW 1 1200 mA HIGH 10 C 60 C 14 F 140 F 15 ppm 10 C 60 C 14 F 140 F 49 W x 103 5 H x 33 mm 1 9 x 4 1 1 3 D in Asia version with BP 86 or BP 90 123 mm 4 8 in Projections not included 270 9 9 5 oz Asia version with BP 86 or 90 315 11 1 2 High 5 0 W Low 3 5 1 5 0 5 W selectable Variable reactance frequency modulation 5 kHz Less than 60 dB 2 Double conversion superheterodyne 1st 30 875 MHz 2nd 455 kHz 0 18 uV for 12 dB SINAD More than 15 kHz 6 dB Less than 30 kHz 60 dB More than 60 dB More than 200 mW at 10 distortion with an 8 load 80 All stated specificati

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