Home

Yaesu FT-2500M service manual

Contents

1. ee 28080261 20004 M4090067 FT 2500M Technical Supplement FO001 18206000C CEE 680 2 082 P 92 be MAIN UNIT F3427000 4 01 R1072 y 2 4 ii 14 01008 01010 14118 13 098 13 0dBm RI110 91005 cibos 2962759 022 0 00 B 7 m u 1018 01010 z L0021359 2 C1082 R1088 2 39 2 00277054 21074 ate ore 122 CH A 1 4 HE n od on 58 58 Sea T 8 22784 7 8 Ab D C1064 5 R a i CK 2 sl 6 0v 88 gag SN e L m 25811426 9 OV PLL LOCK ov 8 0v M89184 37V PLL UNLOCK V V o i 0 5 PLL UNLOCK eu 91020 1 014 4 2V VCO UNIT EC s 26 048 13 0dBm 9 0v 7 0v 5i ze geeks a 51 5 gt 41013 x S 5 A 1651 d 8 Bla amp l me 5 4 9V IPLL LOCK 5 1 3 01015 218 8 ae 8 4v 0v AAV FLL UNLOCK 5 28811438 1 5V PLL UNLOCK 55 5 9 o 81061 8 22K 4 3 8 0 8 4v E d mui 8 0 0v a3 s 1 L8
2. umum uM Cunan GUN GEN GUN ORE Gum Ua wana cuum GEN Gu Gu GER eum GER m m m m n e UR SEES s ee s m s m s c s m SED ORUM m q s s s ha s o 54 mema 2095 R2929 02007 2 2302 S 1 5 3 58 55 RN lt SE ome 1 M 2 01 3 8 0 81 2 I 1 ge mr 5 8 ss 4018 6 st 78 s d ox gt gt 1 gj ME am 5 88 HO ok P gt jej a ago 55 5 3 5 av 24 0 E 2108 Jej ws AS E 7 ds 7 1 NS 10 TTT X ST 32 is k xr db 0 TONE SGL UNITT 1 ON AOS qwa AOS zova ADS AOS lag 8 A09 A0G Mau 79 20028 wa wwo ANG aed A
3. Input AN6541 Q1013 E Pin 1 TDA2003H 01023 Collector Base 25 2053 01010 25811435 01015 1019 FT 2500M Technical Supplement Output Ground 013 MAIN Unit MAIN Unit e Uo weg s 3 X TEE O n LET S m ES SAS e Tb i lt 106 m M k lt a OO W EACUS eur 5 F3427808 To CNTL Unit J2008 See Page 3D 3 3 NOISE INPUT 1 13 8 SWED o e z 5 SQL VOL 4 DISC OUT To CNTL Unit J2007 See Page 3D 3 3B 4 16 N zi S MC337 0100 145 0102 Gate 2 Gate 1 Ja piat ri REESE RRS ii Drain Source 35 131 V12 01001 lt 1 4 9 h d 1 2 D n B 11 de gt ak Aie 3 B a an A 4 1 TRY lt i B lt 0 Ere t t e TN 5 4 x 5 5 on lt VR lt ANM Nr T T B 8 1 Nd 2 2 A 2 gt x MP EN 4 gt lt gt 25 gt N 1 A 7 2 gt lt x 2 P x lt lt x Q pis
4. AD 1 Cut out the label at the right and place 2500 it behind the clear plastic window i the spine of the manual binder Technical Supplement I ei Introduction The FT 2500M is Yaesu s new successor to the famous FT 2400H the industry s first amateur transceiver designed to meet rugged U S mili tary specifications for shock and vibration MIL SPEC 810 C The FT 2500M is upgraded with a new front panel and control knob layout and additional operator features Selectable power output of 5 25 or 50 watts without the need of forced air cooling is possible due to the large heatsink surface area of the com partmentalized one piece diecast chassis Back lighting for the large LCD display and knobs is manually adjustable or automatically controlled by a photosensor and the less used buttons have a flip down protective cover The thirty one tun able memories can each be programmed with a 4 character channel name which can then be dis played in place of frequency as desired Each memory offers complete programmabil ity and scanning functions such as independent tx rx frequencies independent repeater offset and CTCSS tone programmable scan limits se lectable scan resume modes and memory skip priority monitoring and a 1 touch instant recall FT 2500M Technical Supplement CALL channel Channel steps are us
5. 1 Pin 41 Pin 20 doe 25811405 2 00018 SC418082CFU L7805 02006 02012 02004 Ground E ut L 55 OUT NJM2902M RH5VA45AA D5 NJM78L05UA 8C Q2001 2007 Q2009 Q2013 Emitter 1 Base 1 Emitter 2 Base Emitter IMH5 H5 FMA1 1 DTC114EK 24 To DISPLAY Unit J3001 Q2011 2014 Q2015 Q2002 2003 2010 2017 See Page 3 Collector Collector Emitter Emitter 2SC1623 L5 2SC2712GR LG 02008 02005 2018 Anode 1 2 Cathode 1 2 Cathode 1 Cathode 2 Anode 1 Anode 2 DAP202K P 155321 F9 D2001 2003 2004 2005 2002 2006 2008 2009 FT 2500M Technical Supplement 2SB1140S Q2016 B1143S Q2004 t Ground Output JM78L05UA 8C 02013 Emitter 14 24 02 2003 2010 2017 chip only side wd m er i 0 component side AGEL vl CNTL Unit dS dV El 000 QNO Ol 32072 6 Viva 8 80 9 JN dV C 5 OND To MAIN Unit J1002 See Page 3B 4 J2008 INANI 3SION ino 7 HA 10S dO1S 7 To MAIN Unit J1003 See Page 3B 4 J2007 H313W E B DISPLAY Unit J3002 See Page 3E 3 0 ea 10 Pili os ji GAN NTH Lt gt m t 3NO1
6. D gt Y FTS 17A CTCSS Tone Squelch Unit option REF C 0101 C 0102 C 0103 C 0104 C 0105 C 0106 C 0107 C 0108 000101 D 0101 0101 0 0101 R 0101 R 0102 R 0103 R 0104 101 48 2 DESCRIPTION VALUE W TOL FTS 17A Printed Circuit Board CHIP CAP CHIP CAP CHIP CAP TANTALUM CHIP CAP TANTALUM CHIP CAP TANTALUM CHIP CAP CHIP CAP CHIP CAP CERAMIC 050 DIODE CONNECTOR IC CHIP RES CHIP RES CHIP RES CHIP RES POT SPONGE 220 220pF 0 10 uF 0 47uF 4 TuF 0 0010 0 luF 2 2M 330K 8 2K 47K 50 50V 25V 16V 251 6 3V 50V 20V www 1MHz 1 16W 1 16 1 16W 1 16W MFGR S DESIG GRM39B221M50PT GRM39B221M50PT GRM40B104M25PT 0842 02 0708742 7 GRM40B104M25PT CSB1000J221T 155301 TE85R 52022 1010 MX365LH 1 16 7 RMC1 16 225JATP RMC1 16 334JATP RMC1 16 822JATP EVM 1USX30BQ447KB FT 2500M Technical Supplement YAESU P N F3220101 K22174801 K22174801 K22140811 K78120013 K78140012 K78080002 K22174809 K22140811 H7900550 G2070086 P1090624 G1090897 24185105 24185225 J24185334 J24185822 J51789473 R7130200 92 Microphone accessory 58100367 CURL CORD W PLUG Specifications Micropone Impedance 2 0k 2 Operating Temperature Range 10 60 Voltage Requirement 1 1V 10V Eoi cir itin 7 PTT Button
7. 7477 C Fo see ILE gt B 2 A a E e EP Eu RT a E SS AT pm a Sy LT lt 2 A y TTS SE OE E E AEN seg a N QUSE I A Pa Im A dL en ine ee i gt gt gt gt gt gt gt gt gt gt lt u 2 c B gt A gt 5 a 3 T E c o o e 5 S e e ce co C4 C4 C4 2 gt y E a gt gt gt gt gt gt gt gt gt gt gt gt au E ES lt t LO gt 5 5 e E e 5 N N N G 6 6 9 69 69 02 03 69 69 69 02 68 AJ S viva AOS 32012 f ADS N 9 9 To DISPLAY Unit 3 See Page 3E 1 To DISPLAY Unit J3001 See Page 3E 1 FT 2500M Technical Supplement CNTL UNIT gus umm aazam
8. vu Ve T 5 gt EET 2 gt SG E 88 96 5 PN 5 4 o8 52 z 4 8 10 8 8 1 5 54 2 58 277 56 85 8 4v T 59 5 1 gt 52 4 58 R108 4 7K 1128 2 i 0 0 1 t IE d E F i e wa SY gt q sot vn 09 G i SCAN STOP 4 696962 0909 OOOOH gt e e A BOGE Stes To CNTL Unit J2008 See Page 3D 1 CNTL Unit 2007 See 30 1 MAIN Unit 49v SS 13 798 4 6V T s 2 15 648 R10 B t1037 T1003 0022054 1 ANSE E 0 01 B 3 1919 5 o 5 2 292 8 3 8 SOL CLOSE 158 2 4 0V SOL CLOSE Sz 0v SOL OPEN n 52V SOL OPEN Se 7 6 0d8m 11 048 13 048 91005 cl l 2827592 0 001 B n 81034 01007 525 K 28 27126 2 0519184 05 u 1 1008 0 L1020 1077 C 082 jose 55 eoe 00
9. 24205472 R 1095 CHIP RES 560 1 101 5 10 561 24205561 R 1096 CHIP RES 2 2M 1 108 5 RMCI 10T 225J J24205225 R 1097 CHIP RES 1 10 5 10 102 124205102 R 1098 CHIP RES 56 1 104 5 10 560 124205560 R 1099 CHIP RES 8 2K 1 1080 5 10 8227 124205822 R 1100 CHIP RES 8 2K 1 108 55 10 822J J24205822 R 1101 CHIP RES 470 1 10 5 10 471J 124205471 R 1102 CHIP RES 100 1 100 5 10 101J J24205101 R 1103 CHIP BES 10 1 100 5 1 10 103 124205103 R 1104 CHIP RES 2 2K 1 10 5 10 222 24205222 R 1105 CHIP RES 100 1 108 5 RMCI 10T 101J J24205101 amp 1106 CHIP RES 15 1 10W 55 10 150J J24205150 R 1110 CHIP RES 4T 1 108 5 5 01 107 470J 124205470 R 1111 CHIP RES 150 1 10W 5 RMCI IOT 151J J24205151 R 1112 CHIP RES 1 100 5 10 102 124205102 R 1115 CHIP BES 22K 1 10 5 1 10 223J J24205223 R 1117 CHIP RES 100 1 100 5 10 101J J24205101 R 1118 CHIP RES 680 1 108 5 RMCI 10T 681J J24205681 R 1120 CHIP RES 8K 1 100 5 RMCI 10T 182J J24205182 IM A re Ft FT 2500M Technical Supplement REF VR1001 X 1001 X 1002 XF1001 DESCRIPTION CHIP RES CHIP BES CHIP RES CHIP RES CHIP RES CHIP RES CHIP RES CHIP RES COIL COIL COIL COIL COIL COIL TRIMMER CAP POT XTAL X
10. C 1 DAMES A oU A ET NAM 7 ey i i T PM a E T o i 4 em m 2 d m 4 a 7 5 e ees 4 D I 99 dd b P oe V b B 4 0 P 3 7 lt 4 E v y E 5 X m y 1 A 1 1 N 7 lt ee 3 S TM TOM gt Dem gt e AA q ex 42 XS TT 41 S 7 re gt ce 3 r 6 4 gt 3 2 Ei 7 3 i 5 N Z D E A E Cano 1 7 A yb ANI a R z f 4 2092 E 3 3 d 2 du d MX D gt 2 t I 15 Ds 2 4 D A lime s gt 1 7 EN gt 7 prey rk N 4 7 955 s 4 3 E A gt Y S 1 I p gt D i 2 79 y om E M E lt d 4 1 4 A _ EC E 1 1 F 4 n 1 E MEL En x j k gt f gt 4 Y Sale P T we 767 T E ca m E 4 842 t i gt 7 i E _ 1X 3 4 4 T 222 73 mnays 3 gt we
11. VCO UNIT F3152101A NC GND PSTB DATA CLOCK GND MOD SV AF SP 13 8V J1002 7 J2007 P1090838 S METER SCAN STOP SQL VR DISC OUT NOISE INPUT PAGER UI TONE SQL AF SP 13 2008 P1090839 UU U U UU U k A s Y rc FT 2500M Technical Supplement CNTL UNIT 1 DISP UNIT 6 42005 A0651 J3001 GND GND J2007 1080838 DIAL2 DIAL2 S METER DIALI DIALI SCAN STOP CE CE SQL VR INH INH DISC OUT CLOCK CLOCK NOISE INPUT DATA DATA POWER POWER 13 8V SWED D MR 41003 P0090833 S METER SCAN STOP SQL VR DISC OUT NOISE INPUT H M L 13 8V SWED VCO UNIT F3152101A OPT ON S en CALL DIMC k yka e PAGER UNIT JP30 SQL UNIT OPTION a ETT 224 292 up DOWN P GND GND PTT 9 9 DIM 1 T R T R GND NC NC SP GND GND 5V PSTB PSTB 5V DATA DATA GND CLOCK CLOCK SQL GND GND 501 2 MOD GND 5 5 AF AF SP AF SP MIC 13 8V 13 8V AF2 J1002 P0090787 42008 P1090839 GND NIT F3426101 5 IGER UNIT OPT ON E SQL UNIT OPTION GND 0 2 DIALI CE INH CLOCK DATA POWER D MR FW REV MHz LOW RPT TONE PAGE CALL DIMC
12. 1 10 223J J24205223 R 1062 CHIP RES 2 2K 1 10W 5 RMC1 107T 222J J24205222 R 1064 CHIP RES 100K 1 10W 5 10 104J J24205104 R 1067 CHIP RES 330 1 40 5 41 7 124245331 R 1068 CHIP RES 2 2K 1 100 5 61 107 222 444205222 R 1069 CHIP RES 22K 1 10W 5 RMCI 10T 223J J24205223 amp 1070 CHIP RES 1 8K 1 10W 5 RMCI I0T 182J J24205182 R 1071 CHIP RES 1 DK 1 10W 5 1 107 152 24205152 R 1074 CHIP RES 2 2 IW 54 RMCI 2R2JTE J24305229 R 1073 CHIP RES 1 1 100 55 10 1ROJ 124205010 R 1074 CHIP RES 560 1 108 5 10 561J 124205561 R 1075 CHIP RES 10 1 100 5 10 100 124205100 R 1076 CHIP RES 1 l W 5 RMCI IROJTE J24305010 R 1077 CHIP RES 10K 1 100 5 RMCI 10T 103J J24205103 R 1082 CHIP RES 4T 1 10 5 RMCI IOT 470J 424205470 R 1083 CHIP BES 47 1 10W 5 RMCI 10T 470J J24205470 R 1084 CHIP BES 4 1 108 5 8101 107 472J 444205472 R 1085 CHIP RES 10 1 100 5 10 103J 124205103 R 1086 CHIP RES 15K 1 10W 5 10 153J J24205153 R 1087 CHIP RES 4 TK 1 108 5 RMCI IOT 472J 124205472 R 1088 CHIP BES 10 1 10W 5X RMC1 10T 100J J24205100 R 1089 CHIP RES 220 1 10W 5 10 221J 124205221 R 1090 CHIP RES 1 10W 5 RMCI IOT 102 124205102 R 1091 CHIP BES 560 1 10W 5 10 561J 24205561 R 1092 CHIP RES 560 1 10W 5 RMCI 10T 561J J24205561 R 1093 CHIP RES 560 1 10 5 RMCI IOT 561J J24205561 R 1094 CHIP RES 4 TK 1 104 5 8 61 107 472J
13. 12 MHz 11 REV 10 9 D MR 7 DATA 6 CLOCK 5 INH 4 CE 8 POWER J3002 J3001 To CNTL Unit J2006 To CNTL Unit J2005 See Page 3D 3 See Page 3D 3 3E 3 To CNTL Unit 5 See Page 3D 1 4 6V AM 03001 Pin 55 57kHz TW 3104 320712 HNI 39 zva a zi DOOD UE e x 0 34 54 T E 5 3 5 5 Q FT 2500M Technical Supplement TS2063STA Pte 914 B LEE E 1 To CNTL Unit J2005 See 3D 1 To CNTL See a a ees Oo ome ome a J3002 7 E P1030653 8 334333323 CALL 001 1 0262148 6P 25 PAGE 012 TONE RPT 5 5 LOW 12 E 0 gt d 57 REV CIS CEP ew E uc REE EES DZMR 52 E POWER ma ay gt x ze 23015 DISP UNIT 2 Uni
14. 2 1 51 01017 1 2 155272 1 01022 Cathode T Anode N C 02CZ5 1Y 5 1 D1014 Pin 8 Source Drain Gate 2SK302GR TG 01002 1003 Base 2 Base 1 Emitter2 Collector 1 Collector 2 Emitter 1 5 X5 01026 Emitter DTA143EK 3C Q1020 1022 Cathode 1 2 Anode 1 Anode 2 1SS184 B3 D1020 Pin 1 MC12022SLADR2 01025 Emitter 1 1 Emitter 2 Collector Collector 2 Base 2 IMH5 H5 01006 1021 Base 2 1 Emitter 2 E Collector 1 Collector 2 Emitter 1 IMZ2 22 01027 Emitter 2SC2712GR LG 01007 28027147 QY MMBR951 72 01011 Cathode 1 Anode 2 Er Anode 1 Cathode 2 155226 1012 FT 2500M Technical Supplement REF 1001 1002 1003 1004 1005 1006 1007 1008 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1023 1025 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1045 1046 1047 1048 1049 1050 1051 1053 1054 1055 1056 gt DESCRIPTION VALUE WV TOL MAIN UNIT xx MFGR S DESIG PCB With C
15. DIODE SURGE ABSORBER DIODE DIODE DIODE DIODE DIODE DIODE DIODE gt I cz 0000 gt CONNECTOR CONNECTOR CONNECTOR CONNECTOR CC cC COIL COIL COIL M RFC COIL M RFC COIL M RFC M RFC COIL COIL COIL COIL COIL COIL COIL COIL COIL M RFC M RFC pa Ee EE T a p Ep p epe gt gt Q 1001 FET Q 1002 FET Q 1003 FET TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR Q 1008 IC Q 1009 IC TRANSISTOR TRANSISTOR TRANSISTOR Q 1013 IC TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR 3B 8 _ _ _ eee FT 2500M Technical Supplement VALUE 0 33uH 0 4TuH 4 0 22uH 0 22uH WV TOL MFGR S DESIG 02025 1 TE85R P6KE18 UM9415 1SS97 155270 1552707 155184 TE85R 155272 TE85R 1308 B3B EH IMSA 1068 142040 MSA 1068 072040 SC25 02WS 2 515 501 R 1 573 500 0 R 3 573 500 60 R LALOZKRR33K 5 5T3 500 6UEW R LALOZKRR47M 5 573 500 0 LALO3KH102K LALO4NA4R7K 3 575 001 R 2 515 001 R 8 5T4 000 8UEW R 8 574 000 R 1 573 500 01 R 4 5T3 500 60 R 2 513 000 0 R 4 573 500 01 R 3 573 500 6UEW R LALO2KRR22M LALO2NAR22M 3SK131 T2B V12 2SK302GR TE85R 2SK302GR TE85R 2SC2714YTE85R 2562159 2 U22 IMH5 T108 256271208 TE85R MC3372ML
16. GRM40CH150J50PT GRM40CKO10C50PT 672 0 GRM40CK010C50PT GRM40CH060D50PT GRM40CH150J50PT GRM40CH180J50PT GRM40CH220J50PT GRM40B102M50PT GRM40B102M50PT GRM40CK020C50PT GRM40B102M50PT GRM40CH100D50PT GRM40B102M50PT GRM40CH040C50PT GRM40B102M50PT GRM40B102M50PT GRM40B102M50PT 11363 01 4 11363 01 4 11363 014 1T363 01 TO8A 1SV214 TPH LALOSNA4R7K LALOSNA4R7K 57 2 R12 K868C 57 2 R12 K868B FLC32T 2R2K FLC32T ZR2K 28C03356 T2B R24 01012486 T97 2SC3356 T2B R24 IMH5 T108 25C2159 T2B U22 RMCI 10T 273J RMC1 10T 273 RMC1 10T 222J RMC1 10T 101J RMC1 10T 273J RMC1 10T 273J RMC1 10T 102J VCO Unit YAESU P N CA1305001 F3152101A K22170206 K22170211 K22170217 K22170215 K22170202 K46120006 K22170805 K22170202 K22170207 K22170215 K22170217 K22170219 K22170805 K22170805 K22170203 K22170805 K22170211 K22170805 K22170205 K22170805 K22170805 K22170805 G2070114 G2070114 G2070114 G2070114 02070356 11190203 11190203 0190168 10190169 11690207 11690207 3333567 03070034 033335670 0027 G3327597B J24205273 J24205273 J24205222 J24205101 J24205273 J24205273 J24205102 VERS 3 3 VCO Unit REF TP0301 TP0302 TP0303 TP0304 TP0305 3 4 DESCRIPTION CHIP RES HIP RES CHIP RES CHIP RES CHIP RES TP H SHIELD CASE VALUE WV TOL 1 10W 5 1 100 5 1 10W 5 1 10W 5 1 10W 52 MFGR S DESIG RMC1
17. Gt CNTL Unit REF DESCRIPTION VALUE WV TOL MFGR S DESIG YAESU P N VERS CNTL UNIT xx PCB With Components CA1258001 2 PCB With Components CA1258002 TYP PCB With Components 0 1258003 TYP Bl PCB With Components CA1258004 TYP B2 PCB With Components CA1258005 TYP Printed Circuit Board F3426101 BT2001 LITHIUM BATTERY CR2016 TS1 Q9000552 C 2002 CHIP CAP 0 010 50V GRM40B103M50PT K22170817 C 2003 CHIP CAP 0 033uF 25V GRM40B333M25PT K22140810 C 2004 CHIP CAP 0 033uF 25V GRM40B333M25PT K22140810 C 2005 CHIP CAP 0 033uF 25V GRM40B333M25PT K22140810 C 2006 CHIP CAP 0 033uF 25V GRM40B333M25PT K22140810 C 2007 CHIP CAP 0 luF 25 GRM40B104M25PT K22140811 C 2008 TANTALUM CAP 0 35V 0 5 K70167104 C 2009 CHIP CAP 0 0330 25V GRM40B333M25PT K22140810 C 2010 CHIP CAP 0 0082uF 50V B GRM40B822M50PT K22170816 C 2011 CHIP CAP 0 B 7 7 K22140811 C 2012 AL ELECTRO CAP 3 SUF 50V 50V3R3M4X7TR2 K46170032 C 2013 CHIP 0 25V GRM40B104M25PT K22140811 C 2014 CHIP CAP 0 25 GRM40B104M25PT K22140811 C 2015 CHIP CAP 0 25 GRM40B104M25PT K22140811 C 2016 AL ELECTRO CAP 3 uF 50V 50V3R3MAXT7TR2 K46170032 C 2017 CHIP CAP 0 001uF 50V GRM40B102M50PT K22170805 C 2018 CHIP CAP 0 001uF 50V GRM40B102M50PT K22170805 C 2019 AL ELECTRO CAP 100 16V 1 742 4 C 2020 CHIP CAP 0 001uF 50V GRM40B102M50PT K22170805 C
18. J 2003 CONNECTOR 9230B 1 052003 T P0090856 J 2004 CONNECTOR 9230B 1 052003 T P0090856 J 2005 CONNECTOR 00 6200 187 032 800 P1090653 J 2006 CONNECTOR 00 6200 187 032 800 P1090653 J 2007 CONNECTOR 91335 074 P1090838 J 2008 CONNECTOR 91335 144 P1090839 JP2001 CHIP RES 0 1 16W 5 RMC1 16 000JATP J24185000 TYP A2 JP2001 CHIP RES 0 1 160 5 RMC1 16 000JATP J24185000 JP2002 CHIP RES 0 1 160 5 16 000JATP 124185000 2 JP2002 CHIP RES 0 1 160 5 RMCI 16 7 24185000 JP2003 CHIP RES 0 1 160 5 6 7 124185000 TYP Bl JP2003 CHIP RES 0 1 160 5 1 16 000 424185000 B3 JP2006 CHIP RES O 1 16N 5 16 07 J24185000 TYP Bl JP2006 CHIP RES 0 1 16W 5 1 16 07 J24185000 TYP B3 JP2007 CHIP RES 0 1 16W 5 1 16 7 J24185000 TYP A2 JP2007 CHIP RES 0 1 160 5 RMC1 16 7 124185000 0 2001 NJM2902M T2 G1090908 Q 2002 TRANSISTOR DTC114EK T96 03070002 Q 2003 TRANSISTOR DTC114EK 6 03070002 Q 2004 TRANSISTOR 2SB1143S G3211430S Q 2005 TRANSISTOR 2SC2712GR TE85R G3327127G FT 2500M Technical Supplement CNTL Unit REF DESCRIPTION VALUE WV TOL MFGR S DESIG YAESU P N VERS Q 2006 IC SC418082CFU 61091866 Q 2007 IC NJM2902M T2 G1090908 Q 2008 TRANSISTOR 28C1623 TZBL5 G3316237E Q 2009 IC RH5VA45AA TI 61090966 Q 2010 TRANSISTOR 01011486 T96 53070002 Q 2011 TRANSISTOR MH5 T108 03070027 Q 2012 IC L7805 G1090776 Q 2013 IC NJM78LO5UA TE2 G1091325 Q 2014 TRAN
19. M67781L 2SC2053 1 28C2759 T2B U22 AN6541 2SB1143S FMS1 T148 IMX1 T110 2SB1143S 6 IMH5 T108 YAESU P N G2070062 Q9000534 G2090425 G2090118 G2060004 2060004 22070009 02070048 02090337 0090667 P0090787 P0090833 P0090621 L0022129 L0021359A L0021818A L1190354 L0021705A L1190352 L0021705A L1190390 L1190095 L0022130 L0022131 L0020751A 10020751 L0021359A L0020679A L0021811A L0020679A L0021818A L1190342 11190275 G4801317B 038030276 538030270 G3327147Y G3327597B 03070027 033271270 01091108 01091642 03320530 03070056 G3327597B G1091146 032114305 53070008 03070024 134114305 03070010 03070027 VERS MAIN Unit REF DESCRIPTION VALUE WV TOL MFGR S DESIG YAESU P N VERS Q 1022 TRANSISTOR DTAI43EK T146 3070010 Q 1023 IC TDA2003H G1090815 Q 1024 IC MC145158F2L G1091105 Q 1025 MC12022SLADR2 01091103 0 1026 TRANSISTOR 5 108 03070028 Q 1027 TRANSISTOR MZ2 G3070060 Q 1028 TRANSISTOR 2SC27114YTE85R G3327147Y R 1001 CHIP RES 2 2M 1 100 5 10 225J J24205225 R 1002 CHIP RES 2 2M 1 101 5 1 10 225 J24205225 R 1003 CHIP RES 150K 1 100 5 RMC1 107T 154J J24205154 R 1004 CHIP RES 22K 1 100 5 1 107 223J 124205223 R 1005 CHIP RES 19 1 100 5 10 183 124205183 R 1006 CHIP RES 22K 1 10W 5 8 61 107 223J J24205223 R 1007 CHIP RES 41 1 100 5 1 10 470J 70 R 1008 CHIP RES 410 1 10W 55 RMCI 10T 471J 124205471 R
20. 1009 CHIP RES 100 1 10W 5 0 1 107 101J 124205101 R 1010 CHIP RES 2 2M 1 100 5 1 10 225J J24205225 R 1011 CHIP RES 2 2M 1 100 5 10 225J J24205225 R 1012 CHIP RES 41 1 108 5 1 10 470J 24205470 R 1014 CHIP RES 1 1 10W 55 10 102 24205102 R 1015 CHIP RES 10 1 100 5 10 100J J24205100 R 1016 CHIP RES 0 1 100 5 1 10 000 124205000 R 1017 CHIP RES 820 1 10W 5 1 107 821J J24205821 R 1018 CHIP RES 100K 1 10W 5 1 10 104J J24205104 R 1019 CHIP RES 220 1 1001 55 10 221J J24205221 R 1020 CHIP RES 220 1 10W 5 1 10 221J 424205221 R 1021 CHIP RES 1 10W 5 1 107 102 124205102 R 1022 CHIP RES 100 1 100 5 1 107 101J J24205101 R 1023 CHIP RES 15 1 100 5 10 150J 124205150 R 1024 CHIP RES 1 10W 5 10 102 124205102 R 1025 CHIP RES 4 TK 1 1000 5 10 472 124205472 R 1026 CHIP RES 21 1 100 5 10 2704 424205270 R 1027 CHIP RES 470 1 104 5 1 10 471J J24205471 R 1028 CHIP BES 100 1 100 5 1 10 104 124205104 R 1030 CHIP RES 4 1 100 5 10 472J 424205472 R 1031 CHIP RES 470K 1 10W 5 10 474J J24205474 R 1032 CHIP RES 820K 1 10W 5 81 10 824J 24205824 R 1033 CHIP RES 470K 1 10W 5 RMCI IOT 474J J24205474 R 1034 CHIP RES 4 1 10W 5 10 472 24205472 R 1035 CHIP RES 390K 1 10W 5 RMCI 10T 394 J24205394 R 1036 CHI
21. C 0307 C 0308 C 0309 C 0310 C 0311 C 0312 C 0313 0 0314 C 0315 C 0316 C 0317 C 0318 C 0319 C 0320 C 0321 C 0322 D 0301 D 0302 D 0303 D 0304 D 0305 L 0301 L 0302 L 0303 L 0304 L 0305 L 0306 Q 0301 Q 0302 Q 0303 Q 0304 Q 0305 R 0301 R 0302 R 0303 R 0304 R 0305 R 0306 R 0307 DESCRIPTION PCB With Components VALUE WV TOL VCO UNIT Printed Circuit Board CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP AL ELECTRO CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP DIODE DIODE DIODE DIODE DIODE M RFC M RFC COIL COIL M RFC M RFC TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR CHIP RES CHIP RES CHIP RES CHIP RES CHIP RES CHIP RES CHIP RES FT 2500M Technical Supplement 5pF 10 18 15 1 47uF 0 00101 10 15 18 22pF 0 001017 0 00107 2pF 0 00107 10 0 0010 4 0 0010 0 00101 0 0010 4 4 2 2uH 2 2uH 27K 27K 2 2K 100 27K 27K 50V CH 50V CH 50 CH 50V CH 50V CK 16V 50V 50V 50V CH 90V CH 50V CH 50V 90V 50V 50V K 90V B 50V CH 50V 50V CH 50V 50V B 50V 1 10W 5 1 10W 5 1 10W 5 1 10W 5 1 10W 5 1 10W 5 1 10W 5 MPGR S DESIG 7 7 GRM40CH180J50PT
22. C 1089 CHIP CAP 0 001uF 50V GRM40B102M50PT K22170805 C 1090 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 1091 TANTALUM CAP 10 16V TPDN1C100M8S K76120019 C 1092 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1093 CHIP CAP 0 00108 50V GRM40B102M50PT 22170805 C 1094 AL ELECTRO CAP 1007 16V 16V100M4X7TR2 K46120004 C 1095 CHIP CAP 0 001uF 50V 7 K22170805 C 1096 AL ELECTRO CAP 10uF 16V 16V100M4X7TR2 K46120004 C 1097 CHIP CAP 0 00108 50V B GRM40B102M50PT K22170805 C 1098 TANTALUM CAP 0 47uF 351 TPDN1VR47M8S K76160019 C 1099 CHIP CAP 0 0luF 50V B GRM40B103M50PT K22170817 C 1100 CHIP CAP 0 0108 50V GRM40B103M50PT K22170817 C 1101 AL ELECTRO CAP 100uF 10 10V101M5X11TR5 K46100004 C 1105 CHIP CAP 0 0luF 50 GRM40B103M50PT K22170817 C 1106 CHIP CAP 0 0luF 560 GRM40B103M50PT K22170817 C 1107 AL ELECTRO CAP 2 2uF 90V 0772 K46170031 C 1108 TANTALUM CAP 29V TPDN1EO10M8S K76140013 C 1109 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1110 CHIP CAP 100pF 50V 7 K22170235 C 1111 CHIP CAP 0 20V GRM40B104M25PT K22140811 C 1112 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1113 AL ELECTRO 4TuF 16V RC2 16V470M T34 K46120010 C 1114 CHIP CAP 0 001uF 50V GRM40B102M50PT K22170805 C 1115 CHIP CAP 0 00108 50 GRM40B102M50PT K22170805 C 1116 CHIP CAP 0 10 25 GRM40B104M25PT K22140811 C 1117 AL ELECTRO CAP 470uF 16V 2 16 4 40129049 C 1118 AL ELE
23. GRM40CH330J50PT K22170223 C 0106 CHIP CAP 33pF 50V CH GRM40CH330J50PT K22170223 C 0107 TANTALUM CHIP CAP 3 30 10 TEMSVA1A335M 8R K78100015 0 0108 CHIP CAP 100pF 50 CH GRM40CH101J50PT K22170235 C 0109 CHIP CAP 1006 50V CH GRM40CH101J50PT K22170235 C 0110 CHIP CAP 100pF 50V CH GRM40CH101J50PT K22170235 C 0111 CHIP CAP 100pF 50V CH GRM40CH101J50PT K22170235 P 0101 CONNECTOR 52022 1410 P1090705 Q 0101 IC 08880511 2 G1091344 R 0101 CHIP RES 100K 1 10W RMC1 10T 104J J24205104 R 0102 CHIP RES 100K 1 10W RMC1 10T 104J J24205104 R 0104 CHIP RES 100K 1 10W RMC1 10T 104J J24205104 R 0106 CHIP RES 3 3K 1 10W RMC1 10T 332J J24205332 R 0107 CHIP RES 10K 1 10W RMC1 10T 103J 24205103 0101 47K EVM 1USX30BQ447KB J51789473 X 0101 XTAL 3 579545 2 H0103055 RUBBER SPONGE 17139760 4A 2 FT 2500M Technical Supplement FTS 17A CTCSS Tone Squelch Unit option 2 GND 3 CLOCK 4 T DET 5 DATA 6 T5 10 TONE GND 7 T STB 8 T SQL 9 CPUS Cathode 1 2 21 JP Pin 16 Anode 1 Anode 2 155301 B3 D101 R103 0101 330K 15830 101 47 RESISTER VALUES ARE IN 9 1 15W CAPACITOR VALUES ARE IN SOV i T CAPACITOR VALUES ARE TANTALUM UNLESS OTHERWISE NOTED FT 2500M Technical Supplement connector side solder side 9 CPUS 7 TSTB TSAI 5 DATA 75 3 CLOCK 1 GNO 4B 1 W
24. SQL 1 79206352 WIRE ASSY A0651 DISP UNIT F3426102 J3001 GND DIAL2 DIALI CE INH CLOCK DATA POWER JP3001 S C 2 9044066 Interconnection Diagram 9206351 SP PTT MIC GND 5 UP DOWN JP1501 lt lt lt x T V T Y n 1 13 6 Screw List Description PAN HEAD SCREW M3 x 6 SCREW OM4 x 8B BINDING HEAD SCREW M2 6 x6 BINDING HEAD SCREW M3 x6 BINDING HEAD SCREW M3 6Ni BINDING HEAD SCREW M3 6B BINDING HEAD SCREW M3 x8 BINDING HEAD SCREW x 8Ni FLAT HEAD SCREW M2 6 x 6 FLAT HEAD SCREW M3 x 6B TAPTITE SCREW M2 6 x6 TAPTITE SCREW M3 x 6 HEX SOCKET HEAD BOLT M4 x 25B CNTL Unit T9206352A WIRE ASS Y 2pcs uE sa S R3148060 Basic Accessories BUSH YAESU P N DISPLAY Unit P1090677 CONNECTOR R3520140 RUBBER KNOB R3520180B RUBBER KNOB R3520170B RUBBER KNOB R3520200A PANEL R3520160 RUBBER KNOB 3520090 O 79206082 WIRE ASS Y es 67 R3520120 R3520150 M40900 KNOB ASS Y 2pcs RUBBER KNOB SPEAKER 0 R3808010A SUB PANEL R3520190 RUBBER KNOB R3520100 5 RUBBER KNOB ASS Y 6 FT 2500M Technical Supplement Exploded R38 R3806750 T9206000C WIRE ASS gt Sc wn ov oo S lt ot z Ou Ta x
25. a 5 P aM 3 a 2 Em s 2 me a E Ws w thy z Mum 7 7 Am je N a 5 WE 47 X 2 E bo as a 3 5 e on WA C 2 y E RA I A mue Pat e Por Y 2 e p 4 J n 4 lt E mec a B 23 j d 2 al A E 1 T s eer m cae MR ES 6 8 5 E uo gt eC 3 7 t e amp e i T 0 p 1 3 4 mE C 1 b r i Emitter 1 Colle Base 1 IMX1 X1 01018 Emitter Common Base 51 51 01017 Cathode 1 Cathod TT Anode 1 Anode 199272 A1 D1022 Cathode chip only side To CNTL Unit J2008 Anode N C See Page 30 3 02CZ5 1Y 5 1 i D1014 7 S METER 6 SCAN STOP 5 SQL VOL 4 DISC OUT 3 NOISE INPUT 1 13 8V SWED To CNTL Unit J2007 See Page 3D 3 2008 chip only side Pin 16 MC3372ML Q1008 MC145158F2L 01024 Gate 2 Gate 1 Source 3SK131 V12 01001 Base 2 Collector 1 Emitter 2 gi Emitter 1 Collector 2 Base 1 IMX1 1 01018 Emitter Common Base 2
26. alignment is not possible with an antenna After completing one step read the following step to determine whether the same test equip ment will be required If not remove the test equipment except dummy load and wattmeter if connected before proceeding 2 6 Correct alignment requires that the ambient temperature be the same as that of the transceiver and test equipment and that this temperature be held constant between 20 and 30 C 68 86 P When the transceiver is brought into the shop from hot or cold air it should be allowed some time for thermal equalization with the environ ment before alignment If possible alignments should be made with oscillator shields and circuit boards firmly af fixed in place Also the test equipment must be thoroughly warmed up before beginning Note Signal levels in dB referred to in this proce dure are based 0 0 5 uV closed circuit PLL amp Transmitter Set up the test equipment as shown for trans mitter alignment Maintain the supply voltage at 13 8V DC for all steps PLL amp Transmitter Alignment Setup 50 ohm Sampling Inline Regulated Dummy Load Coupler Wattmeter 13 8V PSU Freq Counter ud PLL VCV Varactor Control Voltage O Connect the positive lead of the DC voltmeter to the test point VCV on the Main Unit as indicated in the figure and the negative lead to chassis ground AF Millivoltmeter on M67781L 299 JAPAN V
27. off half of Q1018 This unlock signal produces a low impedance at the base of the other half of 01018 which then turns off Automatic Power Controller Q1019 to disable the supply voltage to transmitter RF am Circuit Description plifiers 01009 and 01010 disabling the transmit ter Miscellaneous Circuits Power On Sequencing amp Panel Lamps Pressing the POWER switch on the DISP Unit turns on 02017 DTC114EK on the CNTL Unit applying 5 volts from regulator 02012 1 7805 via 9 volt regulator Q1013 AN6541 and the 13 8 V supply line to the base of 02016 25811405 This pulls RESET pin 75 of microprocessor Q2006 low causing PO pin 66 to go high The PO line then pulls the base of Q2017 DTC114EK low lighting the pilot lamps 02005 2SC2712GR and Q2004 25811435 Lamp brightness is con trolled by CdS photosensor CS3001 which pro vides an input to microprocessor 02006 pin 49 An pulsed DC ouput is then applied to the inte grator circuit formed by C2015 and R2021 which produces a DC bias proportional to the pulse train input which is then applied to the base of 02005 28C2712GR and Q2004 25811435 controlling voltage to the panel and display lamps Push To Talk Transmit Activation The PTT switch on the microphone is connec ted to pin 44 of microprocessor 22006 so that when the switch is closed pin 69 tx rx goes low This signal is delivered to power bus controller Q1021 IMH5 on the MAIN Unit which
28. phase detector section of Q1024 which produces a dual 5 V pulsed output with pulse duration depending on the phase difference between the input signals This pulse train is converted to DC by charge pump Q1026 Q1027 IMX5 IMZ2 lowpass filtered and then fed back to varactors D301 and D302 1T363 x 2 on the VCO Unit Changes in the level of the DC voltage applied to D301 D302 affect the reactance in the tank circuit of VCO Q301 changing the oscillating fre quency according to the phase difference be tween the signals derived from the VCO and the crystal reference oscillator The VCO is thus phase locked to the crystal reference oscillator The output of receiver VCO Q301 after buffer ing by Q305 is delivered to the Main Unit for amplification by Q1005 before application to the Ist mixer as described previously Transmitter VCO 0303 2SC3356 oscillates between 140 and 174 MHz according to the pro grammed transmit frequency The remainder of the PLL circuitry is shared with the receiver However the dividing data from the micro processor is such that the VCO frequency is at the actual transmit frequency rather than offset for IFs as in the receiving case Also the transmitter VCO is modulated by the filtered speech audio applied to modulating varactor D305 as de scribed previously Transmit Inhibit When the transmit PLL is unlocked pin 7 of PLL chip Q1024 goes to a logic low turning on 1020 DTA143EK and turning
29. small screwdriver or fingernail to slide the release clamps forward on both sides of the cable connector After releasing both cables gently separate the front panel from the main chassis and place it on a soft surface to prevent the clear display from marring FT 2500M Technical Supplement Case Disassembly and PCB Access Lithium Backup Battery Replacement The lithium backup battery should not require servicing for a period of several years however to replace the cell order Yaesu P N Q9000552 First note the location and tab polarity of BT2001 mounted over the CNTL Unit micro processor To remove the old cell carefully unsolder each terminal from the CNTL Unit PCB and lift it free RE 4 Dispose of lithium batteries according to regula Hons in your area and ensure small children can not play with or accidentally ingest the battery O Mount the replacement cell similarly observ ing proper polarity when installing it Next place the plastic insulating seal P N R8118690 on top of the cell by peeling back the cover to expose the adhesive backing then pressing it in place Panel Lamp Replacement The LCD and controls are illuminated by four 10 V incandescent miniature lamps If these re quire replacement they can be ordered from your Yaesu dealer P N Q1000083 First remove the front panel as previously de scribed Note the location of the four lamps
30. the chassis cut out at the rear left corner of the CNTL Unit compartment Remove this plug then run the leads from your TNC through this cut out and solder them to the appropriate leads on the CNTL Unit Be sure to insulate any spliced leads with heat shrink tubing or electrical tape Q2018 AF Buffer Amp 00 DATA OUT w a 03022 AF MUTE ik MIC LPF Fig 4 TNC DATA IN OUT Lead Connections pS FT 2500M Technical Supplement Aver O After checking all connections for integrity replace the top cover and tighten all screws This completes the modification While this modification should work with most units experimentation with audio input and out put level may be necessary before optimum per formance is obtained 2 3 Channel Display Only Mode Channel Display Only Mode You can use this feature when you need very simple operation only stored memories can be selected and are displayed as 5 i c instead of the channel frequency or alphanumeric name display Indicators for previously stored settings such as repeater shift and tone squelch are still displayed although they cannot be changed Only the settings listed below can be changed as described X High Mid Low TX power and locking function use to toggle X Volume amp Squelch same as before X Channel Selection DIAL knob or microphone UP DWN keys X Paging
31. then disables the receiver by disabling the 9 V supply bus at 01022 DTA143EK to the front end IF discriminator and receiver VCO circuitry At the same time 01015 25811435 activates the transmit 9 V supply line to enable the transmit ter MM 1 9 FT 2500M Technical Supplement Notes 1 10 FT 2500M Technical Supplement 1001 2 21M15BU 21 MHz 144 0 148 OMHz 01001 25 16 308 2 91002 UM9415 28K302GRx2 T R ANT SW IST MIX Q1010 25 3356 01011 MMBRSSIL RF AMP APC DET RF DRIVE RX 122 6 126 6MHz 144 0 148 0MHz 1 01017 01019 Q1 FMS1 25811435 MC3 APC APC IF IC 2ND M X1001 122 6 126 6MHz K lt 91018 01028 CF1001 IMX1 m i pa vt 28C2714Y CFW455E APC BUFF 455KHz 91025 1 43 MC12022SLAD UL SW PRE SCALER IC 91026 27 91024 MC145158F2 I MXS 2 PLL IC LPF X1002 PLL 12 8MHz DATA 01022 01 RX VCO UNIT T F3152101A MAIN UNIT F 3427000 u lt lt L c rey TX RX COMMON FT 2500M Technical Supplement u x s m qw W wa s w er umama V aaa X1001 2 21M15BU 144 0 148 2 21 MHz 01002 3 2SK302GR
32. w de E o mt y PR nee 7 c gt f J i h J J 4 5 gt 2 1 34286102 1 re wo PAM Lan w meme ce uma A I en 6 Tiam onerant S Y 1 a I e Ra TEE Von ESO EEE va ma RP n Pe de ey moe pr arr 1 al fu a pud wis J3002 To CNTL Unit J2006 See Page 3D 3 LCD Backplane Circuit Diagram DISPLAY Unit ET Jum p To gt m CED EE SS uU a E lt d 2 J 4 4 7 f E n _ q 7 2 Qr e MV MIC Unit 1501 5 3 NEM 3 chip side 17 CALL 16 PAGE 15 TONE 14 RPT 13 LOW
33. 01508 25V X UAT06X153K L45AE K19149015 C 1144 CHIP CAP 0 00108 50V B GRM40B102M50PT K22170805 C 1145 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1146 CHIP CAP 22pF 50V CH GRM40CH220J50PT K22170219 C 1150 CHIP CAP 50 GRM40CH330J50PT K22170223 C 1155 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1157 CHIP CAP 18 50V 40 180050 K22170217 C 1158 CHIP CAP 0 033uF 25V GRM40B333M25PT K22140810 C 1159 CHIP CAP 0 luF 20V GRM40B104M25PT K22140811 C 1160 CHIP CAP 0 20V GRM40B104M25PT K22140811 C 1161 AL ELECTRO CAP 0 4108 50 80 K46170016 C 1164 CHIP CAP 4pF 500V CH GRM42 2CH040C500PT K22275207 C 1165 CHIP CAP 120 50V 7 K22170213 C 1166 CHIP CAP 3pF 50V CJ GRM40CJ030C50PT K22170204 C 1170 CHIP CAP 68pF 50V CH 71 K22170231 C 1171 CHIP CAP 0 00108 50V 7 K22170805 C 1172 CHIP CAP 0 0108 50 GRM40B103M50PT K22170817 CD1001 CERAMIC DISC CDB455C7 H7900180 CF1001 CERAMIC FILTER CFW455E H3900200 D 1001 DIODE M1308 02090337 D 1002 DIODE MI301 2090033 D 1003 DIODE 15 214 TPH 02070356 1004 DIODE 15 214 TPH G2070356 D 1005 DIODE 1SV214 TPH G2070356 D 1006 DIODE 15 214 TPH 02070356 D 1007 DIODE 15V214 TPH 02070356 D 1008 DIODE 1SV214 TPH G2070356 D 1009 DIODE 1SV214 TPH 02070356 D 1010 DIODE 1SV214 TPH 02070356 D 1012 DIODE 1SS226 TE85R 2070003 3 7 MAIN Unit REF DESCRIPTION
34. 022 01013 143 AN6541 9 REG Q1023 TDA2003H AF PA Es 2 LCD KEY DIAL PLL CLONE DATA INPUT DATA DATA MHS PO ADJ SW Q2001 1 10 LPF 006 AN STOP SU CPU I ONE SQ DATA I TONE SQL UNIT FTS 17A OPTION i RESET i 02007 4 NJM2902M LPF 02007 3 NJM2902M BUFF 92007 2 NJM2902M LIM AMP 13 8V SWED 02006 9 10 15 02004 5 8 9 2SC1623 LS RHSVA4SAA 0 61145 DAP202Kx4 RESET CIRCUIT F3426101 CNTL UNIT LCD DRIVE DIAL DIAL INPUT KEY INPUT KEY gt DISP UNIT e a asp PUS 6 lt E a a MIC MUTE gt PO SW 02007 1 NJM2902M MIC AMP 62018 92002 92001 1 02003 28C27126R 01616 2902 DTC114EK BUFF AF MUTE HPF AF MUTE Q2012 Q2016 02017 1 7805 28811435 DTC114EK 5V REG 13 8V SW PO SW Q2013 NJM78LOSUA SV REG 02001 3 4 NJM2902Mx2 CTR STOP CENTER STOP CD2001 9 83MHz BEEP PAGER DATA PAGER UNIT FRC 6 ON MIC MUTE 1 202 x Mx F3426102 Block Diagram 1 11 RE A0256 EXT SP GND sP 9 GND AF J1001 TZR ANT P0003 T9206087 WIRE ASSY A0313 J1003 P0090833 S METER SCAN STOP SQL VR DISC OUT NOISE INPUT
35. 0J500PT K22275217 71 GRM40CH100D50PT GRM40B102M50PT GRM40CJ030C50PT GRM40B102M50PT GRM40CH040C50PT GRM40CH220J50PT GRM40B102M50PT GRM40B102M50PT GRM40B102M50PT GRM40B102M50PT GRM40B102M50PT GRM40B102M50PT GRM40B102M50PT GRM40CK020C50PT GRM40B102M50PT GRM40CK020C50PT GRM40CH040C50PT GRM40B102M50PT GRM40B102M50PT GRM40B103M50PT GRM40B103M50PT GRM40B102M50PT GRM40CH100D50PT GRM40CH100D50PT GRM40CH080D50PT GRM40B103M50PT GRM40B103M50PT GRM40B103M50PT GRM40B102M50PT GRM40B102M50PT GRM40B102M50PT GRM40CH470J50PT GRM40B102M50PT GRM40CH270J50PT GRM40CH100D50PT TESVA1V224M1 8R 16V100M4X7TR2 GRM40B104M25PT GRM40B103M50PT GRM40B103M50PT GRM40B222M50PT GRM40B102M50PT GRM40CH390J50PT 16V100M4X7TR2 GRM40CH680J50PT GRM40B104M25PT K22170221 K22170211 K22170805 K22170204 K22170805 K22170205 K22170219 K22170805 K22170805 K22170805 K22170805 K22170805 K22170805 K22170805 K22170203 K22170805 K22170203 K22170205 K22170805 K22170805 K22170817 K22170817 K22170805 K22170211 K22170211 K22170209 K22170817 K22170817 K22170817 K22170805 K22170805 K22170805 K22170227 K22170805 K22170221 K22170211 K78160027 K46120004 K22140811 K22170817 22170817 22170809 22170805 K22170225 K46120004 K22170231 K22140811 VERS 3B 5 MAIN Unit REF DESCRIPTION VALUE WV TOL MFGR S DESIG YAESU P N VERS C 1057 CHIP CAP 0 20V GRM40B104M25PT K22140811 C 1058 CHIP CAP DOV 7 K22170233 C
36. 1 22 CH 100 47 CH V 9 o q 9 ig R T eN 24 3 o 34 8441 984 OF Sls n e 4 78 ET S 0 x D go 1 B 1 a 0 em 1 2 HMMM HHS AAN 0100 Ov PLL LOCK 1 um 188104 3 7 PLL UNLOCK 1 8 42 UNII 26 08511 13 0dBm uxt 8 E 2 os 4 29 zi Q a 8 E 4 2915 53 49 PLL LOCK a 8 4v 0v a ts 1 5v PLL UNLOCK 52 Iss 6024 Wc145158F 2 2 8 o3 E 3 8 1 ES me m velt 2 _ pi 59 1 wake t n o 1 we R 10 RX 145 00MHz 4048 u MOD f 1kHz 3 5kHz TX 145 00M Hz SOW Connected to 500 dummy loed RX TX NOTE RESISTOR VALUES ARE 9 1108 CAPACITOR VALUES ARE IN af 50V i D CAPACITOR VALUES ARE TANTALUM i INDUCTOR VALUES ARE IN H 1002 UNLESS OTHERWISE NOTED 0 77 4 OTTATI TT 699 6 0 e 8 ERE Sik RHAI 5 CNTL Unit 2008 See 30 1 CNTL Unit 2007 30 1 38 1 gt d OUTPUT Vec2 INPUT M67781L 01009 25 SU Or LCS SERRA rt w H S
37. 100 5 1 10 102 124205102 R 2086 CHIP RES 47K 1 10W 5 RMC1 10T 473J J24205473 R 2087 CHIP RES 10K 1 10W 5 RMC1 10T 103J J24205103 R 2088 CHIP RES 3 3K 1 10W 5 RMCI 10T 332J J24205332 R 2089 CHIP RES 6 8K 1 10W 5 10 682 J24205682 R 2090 CHIP RES 1 10W 55 RMCI 10T 102 124205102 R 2091 CHIP BES 10K 1 10W 5 1 10 103J J24205103 R 2092 CHIP RES 10K 1 10W 5 RMC1 10T 103J J24205103 R 2093 CHIP RES 1 10W 55 10 102 24205102 R 2094 CHIP RES 1 1 108 5 1 10 102J 124205102 R 2095 CHIP RES 1 101 5 10 102 124205102 R 2096 CHIP RES 1 100 5 1 10 102 124205102 R 2098 CHIP RES 10 1 104 5 1 10 103J 124205103 R 2099 CHIP RES 0 1 101 5 RMCI 10T 000J J24205000 TP2001 TP E MS 60124 Q5000016 TP2002 TP E MS 60124 Q5000016 VR2001 50K EVN DXAA03B54 J51783503 VR2002 POT 10K EVN DXAA03B14 J51783103 VR2003 POT 10 EVN DXAA03B14 J51783103 VR2004 POT 2K EVN DXAA03B23 J51783202 VR2005 10 EVN DXAA03B14 J51783103 VR2006 50 EVN DXAA03B54 J51783503 VR2007 POT 20K EVN DXAA03B24 03 RUBBER SPONGE R7139760 SEAL R8118690 30 8 rere _ _ _ S FT 2500M Technical Supplement a ar e 9 uld LC7582bE 03001 LCD Segmentation Circuit Diagram LCD Backplane Circuit Diagram FT 2500M Technical Supplement eh CL e
38. 10262AB SP 2B G6090086A J 3001 CONNECTOR 00 6200 187 032 800 P1090653 J 3002 CONNECTOR 00 6200 187 032 800 P1090653 PL3001 LAMP 10V 10 60T3F Q1000083 PL3002 LAMP 10V 10 60T3F Q1000083 PL3003 LAMP 10V 10 60T3F Q1000083 PL3004 LAMP 10V 10 60T3F 01000083 0 3001 IC LC7582E G1091496 R 3001 CHIP RES 100K 1 10W 5 RMC1 10T 104J J24205104 R 3002 CHIP RES 100 1 10W 5 RMC1 10T 104 24205104 R 3003 CHIP RES 10 1 10W 5 RMC1 10T 103J J24205103 R 3004 CHIP RES 10 1 10W 5 RMC1 10T 103 24205103 R 3005 CHIP RES 2 2M 1 10W 5 RMC1 10T 225 424205225 R 3006 CHIP RES 15 1 10W 5 RMC1 107T 150 24205150 3007 CHIP RES 15 1 100 5 RMC1 10T 150 24205150 R 3008 CHIP RES 33 1 10W 5 RMC1 10T 330 J24205330 R 3009 CHIP RES 56 1 10W 5 RMC1 10T 560J J24205560 R 3015 CHIP RES 47K 1 16W 5 RMC1 16 473JATP J24185473 S 3001 TACT SWITCH SKHHDU N5090080 S 3002 TACT SWITCH SKHHDU N5090080 S 3003 TACT SWITCH SKHHDU N5090080 S 3004 ROTARY CODE SW EVQ WP9F1524B 09000626 S 3005 SWITCH SKHHDU N5090080 S 3006 TACT SWITCH SKHHDU N5090080 S 3007 TACT SWITCH SKHHDU N5090080 S 3008 TACT SWITCH SKHHAP N5090062 S 3009 TACT SWITCH SKHHAP N5090062 S 3010 TACT SWITCH SKHHDU N5090080 S 3011 TACT SWITCH SKHHDU N5090080 S 3012 TACT SWITCH SKHHDU N5090080 VR3001 POT 20 EVU F2JFK1B24 J60800202 VR3002 POT 20K EVU F2JFK1A24 J60800201 LAMP GUIDE R3516440 3E 5 FT 2500M Technical Supplement DISPLAY Unit REF DESCRIPTION VALUE W
39. 1059 CHIP CAP 0 0luF 50 GRM40B103M50PT K22170817 C 1060 CHIP CAP 0 0010 50V GRM40B102M50PT K22170805 C 1061 CHIP CAP 33pF 500V CH GRM42 2CH330J500PT K22275225 C 1063 CHIP CAP 15pF 500V GRM42 2CH150J500PT 7 C 1064 CHIP CAP 1 50V 71 K22170202 C 1065 CHIP 22pF 500V CH GRM42 2CH220J500PT K22275221 C 1066 CHIP TpF 50V 71 22170208 C 1067 CHIP CAP 10 500V CH GRM42 2CH100D500PT K22275213 C 1068 CHIP 0 00108 50V GRM40B102M50PT K22170805 C 1069 AL ELECTRO CAP 1007 16V 16V100M4X7TR2 K46120004 C 1070 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1071 AL ELECTRO CAP 1007 16V 16V100M4X7TR2 K46120004 C 1072 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1074 CHIP CAP 1201 DOV 7 1 K22170213 C 1075 CHIP CAP 0 0010 8 50V GRM40B102M50PT K22170805 C 1076 CHIP CAP 33pF 50V CH GRM40CH330J50PT K22170223 C 1077 CHIP CAP 1201 DOV 7 K22170213 C 1078 CHIP CAP 0 00108 50V 4 7 K22170805 C 1080 CHIP CAP 4TpF 50V GRM40CH470J50PT 22170227 C 1081 CHIP 100 DOV CH GRM40CH101J50PT K22170235 C 1082 CHIP CAP 22pF 50V CH KGRM40CH220J50PT 22170219 C 1083 CHIP CAP 0 001uF 50V GRM40B102M50PT K22170805 C 1084 AL ELECTRO CAP 1000uF RE3 16V102MS K40129067 C 1085 CHIP CAP 0 010 8 50V GRM40B103M50PT K22170817 C 1086 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1087 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805
40. 10T 332J RMC1 10T 103J RMC1 10T 221J RMC1 10T 152J RMC1 10T 223J MK 10160 MK 10160 MK 10160 10160 MK 10160 YAESU P N VERS J24205332 J24205103 J24205221 J24205152 J24205223 Q5000037 Q5000037 Q5000037 Q5000037 Q5000037 R0136240B FT 2500M Technical Supplement 8 a Mod UO 06012 gt rs 82 ow w xc ioi Stow 8 55 h 68222 m f MOL 0 x 233 2 190210 0010 E T ETT 02 88112 o s 55 a 5 2 21910 5 e S t h a 10070 48012 12 1070 58112 lt 2 2 88 70 m e e gt gt gt n gt gt amp I lt lt lt t c LO lt qu C4 q E co E 5 2 Ld 0 0 0 gt gt gt lt IT 8 2 lt 2 x lt 8 qe 0 5 PLL UNLOCK 0 8 0v 4 7V 3 8V a o soi 3001 739014 a 3 8 0 01024 Pin 2 Q1024 Pin 1 4 2V V Sec 5 0V 0 lt 200 01024 Pin 15 16 12 u Sec Q1024 Pin 12 188 Sec 121 H3 ege HD eT 52112 M w i
41. 2 R 2025 CHIP RES 680 1 108 5 10 681J J24205681 R 2026 CHIP RES 180 1 10W 5 10 184 124205184 R 2028 CHIP RES 100 1 10 5 10 104 124205104 R 2029 CHIP RES 560 1 108 5 10 564 J24205564 R 2030 CHIP RES 4 TK 1 10W 5 1 10 472J 124205472 R 2031 CHIP RES 560 1 10 5 10 564 124205564 R 2032 CHIP RES 1 5M 1 10 55 1 10 155 424205155 R 2033 CHIP RES 150K 1 10W 5 10 154J J24205154 R 2034 CHIP RES 1 108 5 1 10 105 124205105 R 2036 CHIP RES 10 1 100 0 5 1 10 103J 424205103 R 2037 CHIP RES 4 TK 1 108 5 5 61 107 472J J24205472 R 2038 CHIP RES 15K 1 104 5 10 153J J24205153 R 2039 CHIP RES 220 1 10W 5 RMCI 10T 2247 124205224 R 2040 CHIP RES 2 2K 1 100 5 10 222J J24205222 R 2041 CHIP RES 22K 1 108 5 10 223J J24205223 R 2042 CHIP RES 22K 1 10W 5 10 223J J24205223 R 2043 CHIP RES 22K 1 10W 5 8 01 107 223J J24205223 R 2044 CHIP RES 2 2M 1 100 5 10 225J J24205225 R 2045 CHIP RES 8 2K 1 10W 5 10 822J J24205822 R 2046 CHIP RES 10K 1 108 5 10 103J J24205103 FT 2500M Technical Supplement 30 7 CNTL Unit REF DESCRIPTION VALUE W TOL MFGR S DESIG YAESU P N VERS R 2048 CHIP RES 22K 1 10W 5 10 223J J24205223 R 2049 CHIP RES 39K 1 100 5 RMCI 10T 393J J24205393 R 2050 CHIP RES 3 3K 1 104 5 1 107 332J J2
42. 2021 TANTALUM 3 10V TPDN1A3R3M8S 76100003 C 2022 CHIP CAP 0 010 50V GRM40B103M50PT K22170817 C 2023 CHIP CAP 68pF 50V CH GRM40CH680J50PT K22170231 C 2024 CHIP CAP 10 50V CH GRM40CH100D50PT K22170211 C 2025 AL ELECTRO CAP 100 16V 1 742 46120004 C 2026 CHIP CAP 39pF 50V CH GRM40CH390J50PT K22170225 C 2027 CHIP CAP 0 004708 50V GRM40B472M50PT K22110813 C 2028 CHIP CAP 0 OluF 50 GRM40B103M50PT K22170817 C 2029 CHIP CAP 39pF 50V CH GRM40CH390J50PT K22170225 C 2030 CHIP CAP 0 033uF 25V GRM40B333M25PT K22140810 C 2032 CHIP CAP 0 25 GRM40B104M25PT K22140811 C 2033 CHIP CAP 680pF 50V GRM40B681M50PT K22170803 C 2034 CHIP CAP 0 25 GRM40B104M25PT K22140811 C 2035 CHIP CAP 0 25 GRM40B104M25PT K22140811 2036 TANTALUM CHIP 3 3uF 6 3V TESVAOJ335M1 8R 78080021 C 2037 CHIP CAP 0 0022uF 50V B GRM40B222M50PT 22170809 C 2038 TANTALUM CHIP CAP 2 20 6 3V TESVA0J225M1 8R K78080009 C 2039 AL ELECTRO CAP 10007 16V 16V101M6X7TR2 K46120007 C 2040 CHIP CAP 0 00luF 50V B GRM40B102M50PT K22170805 C 2041 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 2043 CHIP CAP 0 OluF 50V GRM40B103M50PT K22170817 C 2044 AL ELECTRO CAP 47uF 6 3V RC2 6V470M T34 K46080005 C 2045 AL ELECTRO CAP 47uF 16V 102 16147001 4 46120010 C 2046 CHIP CAP 0 010 50V GRM40B103M50PT K22170817 Ra 30 5 FT 2500M Technical Supplement 3D 6
43. 4205332 R 2051 CHIP BES 82K 1 10W 5 10 823 124205823 R 2052 CHIP RES ATK 1 10W 5 1 10 473J J24205473 R 2053 CHIP RES 100K 1 10W 5 10 104 J24205104 R 2054 CHIP RES 22K 1 10W 5 10 223 J24205223 R 2055 CHIP RES 22K 1 10W 5 10 223J J24205223 R 2056 CHIP BES 22K 1 10W 5 10 223J J24205223 R 2057 CHIP RES 22K 1 10W 5 10 223J J24205223 R 2066 CHIP RES 1 100 5 10 1027 124205102 R 2068 CHIP RES 10K 1 101 5 RMC1 10T 103J J24205103 R 2069 CHIP RES 1 10W 5 10 102 124205102 R 2070 CHIP RES 27K 1 10W 5 10 273J J24205273 R 2071 CHIP RES 1 8K 1 10W 5 1 10 182J 424205182 R 2072 CHIP RES 10 1 1001 55 1 10 103J 444205103 R 2073 CHIP RES 4 TK 1 104 5 RMCI 10T 472J 124205472 R 2074 CHIP RES ATK 1 10W 55 10 473J 124205413 R 2075 CHIP RES 1 8K 1 10W 5 RMC1 10T 182J J24205182 R 2076 CHIP RES 33K 1 104 5 1 10 333J 24205333 R 2077 CHIP RES 4 1 108 5 RMCI 10T 472J J24205472 amp 2078 CHIP RES 410 1 24 5 RMCI 2 471JCTP 124215471 R 2079 CHIP RES 10 1 10W 5 RMCI 10T 103J 124205103 R 2080 CHIP RES 10 1 10W 5 1 10 103J 124205103 R 2081 CHIP RES 10 1 101 5 RMC1 10T 103J 124205103 R 2082 CHIP RES 10 1 100 5 RMC1 10T 103J 124205103 R 2083 CHIP RES 1 1 108 5 RMC1 10T 102 124205102 R 2084 CHIP RES 1 1 101 5 1 10 102J 124205102 R 2085 CHIP RES 1
44. B 2 7 cos Pa ke vlr ae EE 2 7 QI od a u ED Sa r Ee A 2 7 Receiver 2 8 us OP TET SOO Landi K ead w ou iya tense uk ES exc OA LAS S dre S a 122 2 8 SDT SIR SE d SEEN TAS dre irr vede oe p y 2 8 Uo E CR are C D a iay e dap ik n T a i er fq T S 2 8 HII Board Units Ten Layout amp Parts List non Saa AG 3 1 MAIN Unit ER of e sa 3B 1 MIC Unit ate pi NEL 3C CNITE UDIE ST e ET ee ROSE AT ASA 3D 1 irte e SSS O XI S eee 1 IV Optional Board Units Schematics Layout amp Parts ERC 6 DIME Paging Unit 5 ss s E ICH OM UI En uda Porta 4A 1 FIS 17A CTCSS Tone Squelch Unit earn 2 4B 1 2 5 2 SIE SIS IR Gore LAU 22 0 4 5181227011 1 0720001100060 RC Lom ss ee
45. CNTL Unit REF DESCRIPTION VALUE W TOL MFGR S DESIG YAESU P N VERS C 2047 CHIP CAP 0 022uF 50V B GRM40B223M50PT K22170821 C 2048 CHIP CAP 0 10 25 GRM40B104M25PT K22140811 C 2049 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 2050 AL ELECTRO CAP 1007 16V 16V100M4X7TR2 K46120004 C 2051 AL ELECTRO CAP 10uF 16V 16V100M4X7TR2 K46120004 C 2052 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 2053 AL ELECTRO CAP 10uF 16V 16V100M4X7TR2 K46120004 C 2054 CHIP 0 00108 50V GRM40B102M50PT K22170805 C 2055 CHIP CAP 0 00luF 50V GRM40B102M50PT K22170805 C 2056 CHIP CAP 0 0022uF 50V GRM40B222M50PT K22170809 C 2057 CHIP 0 0luF 50 GRM40B103M50PT K22170817 C 2058 CHIP CAP 0 0068uF 50 GRM40B682M50PT K22170815 C 2059 CHIP CAP 0 001uF 18 GRM40B102M50PT K22170805 C 2060 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 2061 CHIP CAP 0 0100 50 GRM40B103M50PT K22170817 2062 CHIP CAP 0 10 20V GRM40B104M25PT K22140811 C 2063 CHIP 100pF DOV CH KGRM40CH101J50PT K22170235 002001 CERAMIC OSC CSA9 83MT H7900620 D 2001 DIODE DAP202K T146 G2070180 D 2002 DIODE 1580321 08 02070076 D 2003 DIODE DAP202K T146 52070180 D 2004 DIODE DAP202K T146 G2070180 D 2005 DIODE DAP202K T146 22070180 2006 DIODE DAP202K T146 02070180 D 2007 DIODE 10 1 02090306 2008 DIODE DAP202K 6 2070180 D 2009 DIODE DAP202K T146 G2070180 J 2001 CONNECTOR 9230B 1 072003 T P0090857 J 2002 CONNECTOR 9230B 1 072003 T 87
46. CTRO 100008 16 RE3 16V102MS K40129067 y e FT 2500M Technical Supplement MAIN Unit FT 2500M Technical Supplement REF DESCRIPTION VALUE TOL MFGR S DESIG YAESU P N VERS C 1119 CHIP CAP 0 0luF 50V GRM40B103M50PT K22170817 C 1120 CHIP CAP 0 luF 20V GRM40B104M25PT K22140811 C 1121 CHIP CAP 0 010 8 0 GRM40B103M50PT K22170817 C 1122 CHIP CAP 0 022uF 50V GRM40B223M50PT K22170821 C 1123 AL ELECTRO CAP 4TuF 16V 16V470M6X7TR2 K46120006 C 1125 CHIP CAP DOV GRM40CH330J50PT 22170223 C 1126 CHIP 39pF DOV CH GRM40CH390J50PT K22170225 C 1128 CHIP CAP 0 0luF 50V GRM40B103M50PT K22170817 C 1129 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1130 CHIP CAP 0 0luF 50 GRM40B103M50PT K22170817 C 1131 CHIP CAP 0 20V GRM40B104M25PT K22140811 C 1132 CHIP CAP 10 DOV 7 K22170211 C 1133 CHIP CAP 0 00108 50V GRM40B102M50PT K22170805 C 1134 CHIP CAP 0 001uF 50V GRM40B102M50PT K22170805 C 1135 CHIP CAP 0 0luF 50 GRM40B103M50PT K22170817 C 1136 AL ELECTRO CAP 100 16V 16V100M4XTTRZ K46120004 C 1137 CHIP CAP 0 lu 20V GRM40B104M25PT K22140811 C 1138 CHIP CAP 0 20V GRM40B104M25PT K22140811 C 1139 CERAMIC CAP 0 047uF 25 X UAT08X473K L45AE 1 C 1140 CHIP CAP 0 001uF DOY GRM40B102M50PT K22170805 C 1141 TANTALUM CAP 2 2uF 16V TPDNICZR2M8S K76120015 C 1142 CERAMIC CAP 0 022uF 25V X UAT06X223K L45AE K19149017 C 1143 CERAMIC CAP 0
47. CV Test Point FT 2500M Technical Supplement I a PLL amp Transmitter Alignment Points Set the transceiver to the 174 000 MHz and adjust coil L303 on the VCO Unit for 7 5 V on the voltmeter For transceiver versions without extended receive capability tune to 146 000 MHz and adjust L303 for 1 8 V on the voltmeter Next tune to 146 000 MHz key the transmitter and adjust L304 for 1 8 V on the voltmeter PLL Reference Frequency J With the wattmeter dummy load and fre quency counter connected to the antenna jack and while tuned to 146 000 MHz key the transmitter adjust TC1001 on the Main Unit if necessary so the counter frequency is within 100 Hz of 146 000 MHz Transmitter Output O Preset trimmer potentiometers VR2003 VR2004 and VR2005 fully clockwise O While tuned to 146 000 MHz press the LOW button on the panel to select high mid and then low power while adjusting the corre sponding trimpot for the transmitter power output levels listed in the table FT 2500M Technical Supplement VR2004 Panel Power Power Output Ux 0 9 50 sossw Transmitter Deviation While tuned to 146 000 MHz adjust the AF generator level for 50 mV output 1 kHz to the MIC jack J Key the transmitter and adjust VR2002 on the CNTL Unit for 4 5 kHz deviation on the de viation meter within 100 Hz 2 7 nh Receiver Set u
48. DS 3 2 72 0090000 7 AF Sa MOLOLA HET E o9 r 8 xoi 90 dan TATY iis M 0 0 a fU di 5 e e on A i i i i i i i i i i i l See Page 3B 1 To MAIN Unit J1003 To DISPLAY Unit J3002 See Page 3E 1 See Page 3E 1 To DISPLAY Unit J3001 CNTL Unit RESISTOR VALUES ARE IN G 1 10W CAPACITOR VALUES NOTE CNTL UNI IT F3426101 IN aF SOV i CAPACITOR VALUES ARE TANTALUM 1 INDUCTOR VALUES IN H UNLESS OTHERWISE NOTED ey s _ Bs UR o m T sia 600 TOOTH gt 8 ASE 5 0v 11 0v 181 910293 100219 56 T L d 2 32 s xe _ One 92028 J2006 90653 12008 P1080039 1 8 8 69 32 S 1 4 AS oon 33073 AQ viva 9 818 A0 av 6 0345 10119 ino 2810 HA 8 4018 N38 3 mia 9 21 48470 QN9 09 1708 A To MAIN Unit J1002 See Page 3B 1 To MAIN Unit J1003 See Page 3B 1 Y Unit J3002 3E 1 3D 1
49. FT 2500M Mil Spec 2 m FM Transceiver Technical Supplement YAESU MUSEN CO LTD C P O Box 1500 Tokyo Japan YAESU U S A 17210 Edwards Rd Cerritos California 90703 U S A k YAESU EUROPE B V Snipweg 3 1118DN Schiphol The Netherlands Y AESU UK LTD Unit 2 Maple Grove Business Centre Lawrence Rd Hounslow Middlesex TW4 6DR UK Contents I General Information 11110110603000 d ya Good ISDS 2 1 1 Specificdlions Oa 35 5 TU EAE C ue ee CPC E TE ET eee 1 2 Chip CotiponenE TAOBAO STRA Oe ee 1 3 Circuit Description C P ETT En 1 7 Block Diagram vv uU WEN yapaku At 1 11 iricEcompeediom INE ade Ane eee Sead 1 13 Exploded View amp Miscellaneous II Servicing Case Disassembly S FCD Access e 52 505 EIEN 54 60 22 2 1 LCD amp Control Unit Access 2 1 Lithium Backup Battery Replacement 2 1 Panel Lamp Replacement 2 1 9600 Baud Packet Modification 2 2 Channel Display Only Mode 2 4 11800012018 x Na S S xu ARR 2 5 PLL Transmitter 2 6 Olio san ter SIVE ki 2 6 PEL Reference kya s tel esc ct o A ers PR A
50. Main Unit and passed through a low pass filter and 4 wave antenna switching network consisting of coils L1003 amp L1004 ca pacitors C1003 amp C1004 and diodes D1001 amp D1025 Signals within the frequency range of the transceiver are then passed through a varactor tuned bandpass filter consisting of T1001 T1002 before RF amplification by 01001 35 131 The amplified RF is then bandpass filtered again by varactor tuned resonators T1003 T1004 to en sure pure in band input to lst mixer 01002 01003 2SK302GR x 2 Buffered output from the VCO Unit is ampli fied by 01005 285C2759 and lowpass filtered by L1009 and C1042 C1043 to provide a pure 1st local signal between 118 6 and 152 6 MHz to the 1st mixer The 21 4 2 1st mixer product is passed through dual monolithic crystal filter XF1001 amp XF1002 7 5 kHz BW to strip away all but the desired signal which is then amplified by Q1004 2SC2714Y The amplified 1st IF signal is applied to FM IF subsystem IC Q1008 MC3372ML which con tains the 2nd mixer 2nd local oscillator limiter amplifier noise amplifier S meter amplifier and squelch gates A 2nd local signal is generated from 21 855 MHz crystal X1001 which produces the 455 kHz 2nd IF when mixed with the 1st IF signal within Q1008 The 2nd IF is passed through ceramic filter CF1001 to strip away un wanted mixer products and then applied to the limiter amp in Q1008 which removes amplitude variation
51. P RES 4 TK 1 1008 5 RMC1 10T 472J 424205472 R 1037 CHIP BES 10 1 1008 5 61 107 103J 424205103 R 1038 CHIP RES 4 TK 1 1080 5 RMCI IOT 472J 124205472 R 10399 CHIP RES 8 2K 1 100 5 10 822J J24205822 R 1040 CHIP RES 1 8K 1 10W 5 0 182J J24205182 R 1041 CHIP RES 220 1 10W 5 10 221J J24205221 R 1042 METAL FILM RES 82 IW 5 8006 7 422309029 R 1043 CHIP RES 1 104 5 10 102 24205102 R 1044 CHIP RES 10K 1 10W 5 61 107 103J J24205103 R 1045 CHIP RES 1 1 10W 5 10 102 124205102 R 1046 CHIP RES 3 1 10 5 01 107 332J J24205332 R 1048 CHIP RES 330 1 10W 55 RMCI 10T 331J J24205331 R 1049 CHIP RES 1 2K 1 10W 5 10 122J J24205122 R 1050 CHIP RES 100 1 10W 5 RMCI 10T 101J J24205101 B 9 3 _ FT 2500M Technical Supplement REF DESCRIPTION VALUE W TOL MFGR S DESIG YAESU P N VERS R 1051 CHIP RES 220 1 108 5 1 10 221J J24205221 R 1052 CHIP RES 2 2K 1 10W 5 01 107 222J 424205222 R 1053 CHIP RES 470 1 100 5 1 107 471J J24205471 R 1054 CHIP RES 56 1 100 5 10 560J J24205560 R 1055 CHIP RES 4 TK 1 10W 5 8 01 107 472J 124205472 R 1056 CHIP RES 1 100 5 1 10 102 124205102 R 1057 RES 220 1 10W 5 1 10 18 124205221 R 1058 CHIP RES 100 1 100 5 RMCI 10T 101J J24205101 R 1059 CHIP RES 220 1 108 5 10 221J J24205221 amp 1061 CHIP RES 22K 1 10W 5
52. PT P AE 4 Mic Tx Audio b s 7 Up Button CALL LOCI 2081 8 Down Button ko REF DESCRIPTION VALUE W TOL MFGR S DESIG YAESU P N VERS MH 26G8J xxx MIC ELEMENT EM 78 M3290007 TACT SWITCH 3pcs SKHHLN N5090036 4C FT 2500M Technical Supplement MH 27A8J accessory YAFSQ gt OO 6 0 oo 8100227 CURL CORD WZ PLUG Specifications Micropone Impedance 1 5k Q Operating Temperature Range 10 60 Voltage Requirement 4 8V D MR amp P Button N C PTT Button 2345676 MicTx Audio GND Lors 5V DC Pn Up Button Down Button 1000 4 00 pnm gt C16 C17 ONS o0FF 9 6 Q Q iE mee C10 11 1000 4 40 1 FT 2500M Technical Supplement MH 27A8J Microphone accessory REF DESCRIPTION VALUE W TOL MFGR S DESIG YAESU P N VERS xxx MH 27A8J D 0001 LED SEL1123R G2090576 D 0003 LED SLM 13DW G2070326 D 0004 LED SLM 13DW G2070326 D 0005 LED SLM 13DW 12070326 D 0006 LED SLM 13DW 02070326 0007 LED SLM 13DW 2070326 MAIN UNIT 557 B76118G1 S8100307 KEYBOARD UNIT 557 B76120Y1 S8100308 SWITCH UNIT ASS Y B76119G1 S8100309 MIC ELEMENT T006P70F0001 M3290021 4D 2 FT 2500M Technical Supplement Copyright 1994 Yaesu Musen Co Ltd All right r
53. SISTOR IMH5 T108 03070027 Q 2015 TRANSISTOR T148 63070089 Q 2016 TRANSISTOR 25 11405 632114008 Q 2017 TRANSISTOR 01011406 6 03070002 Q 2018 TRANSISTOR 2SC2712GR TE85R G3327127G R 2002 CHIP RES 33K 1 10W 5 1 10 333J J24205333 R 2003 CHIP RES 180K 1 10W 5 RMC1 10T 184J J24205184 R 2004 CHIP RES 220K 1 10W 5 1 10 224J J24205224 R 2005 CHIP RES 2 2M 1 10W 5 1 10 225 J24205225 R 2006 CHIP RES 10K 1 10W 5 5 01 107 103J J24205103 R 2007 CHIP RES 10K 1 10W 5 10 103J J24205103 R 2008 CHIP RES 10K 1 10W 5 10 103J J24205103 R 2009 CHIP RES 220K 1 10W 5 10 224J J24205224 R 2010 CHIP RES 4 TK 1 10W 5 1 10 472 J24205472 R 2011 CHIP RES 15 1 10W 5 RMC1 107T 153J 124205153 R 2012 CHIP RES 100K 1 10W 5 RMCI IOT 104 J24205104 R 2013 CHIP RES 4 1 10 5 1 10 472 24205472 R 2014 CHIP RES 10K 1 108 5 RMCI 10T 103J J24205103 R 2015 CHIP RES 4 TK 1 108 5 10 472J 424205472 R 2016 CHIP RES 100 1 100 5 10 104 124205104 R 2017 CHIP RES 1 10W 5 1 10 102 124205102 R 2018 CHIP RES 1 1 100 5 RMCI 10T 102 124205102 R 2019 CHIP RES 10 1 108 5 10 103 124205103 R 2020 CHIP RES 470 1 104 5 RMCI 10T 471 124205471 R 2021 CHIP RES 10 1 108 5 10 103 124205103 R 2022 CHIP RES 1 1 10W 5 RMC1 10T 102 424205102 R 2023 CHIP BES 1 2K 1 10W 5 10 122J J2420512
54. TAL XTAL SHIELD CASE LEAF SPRING XTAL HOLDER 2pcs FT 2500M Technical Supplement VALUE 20pF 50K 21 855MHz 12 800MHz TOL 1 10W 5 1 10W 5 1 10W 5 1 10W 5 1 10W 5 1 10W 5 1 10W 5 1 10W 5 MFGR S DESIG RMC1 10T 473J RMC1 10T 223J RMC1 10T 000 RMC1 10T 470J RMC1 10T 103J RMC1 10T 102J RMC1 10T 6R8J RMC1 10T 681J 160M R12 K905X 160M 112 907 160M 112 908 1601 112 906 48 7 21 4M TZO3R200ER EVN DXAA03B54 21M15BU MAIN Unit YAESU P N J24205473 J24205223 J24205000 J24205470 24205103 424205102 124205689 24205681 0022053 10022055 10022054 10022056 10190173 10022111 91000071 451783503 0103015 0102801 1102095 00 00 R3129530 VERS Notes 35 12 su CT n FT 2500M Technical Supplement MIC Unit To DISPLAY Unit JP3001 See Page 3E 3 520990222 connector side chip only side TO TEN Rica a a Lu S lt gt MIC UNIT F3426103 01501 P1090677 1501 100 C1502 UNS CH AEST C1503 1002 CH 1504 100p C1505 100p CH C1506 100 CH C1S07 200p CH TEE A JP1S01 UNLESS CTHERWISE NOTED chu e eee 27 Mi ad To DISPLAY Unit JP3001 See P
55. TOL MFGR S DESIG YAESU P N VERS LCD HOLDER R3516450A LIGHT GUIDE R3520070 LIGHT GUIDE R3520080 REFLECTOR R7139670A SHEET A R7140070 SHEET R7149850 LED SPACER 2pcs LH 5 3 56000236 LED SPACER LH 5 9 S6000242 NYLON RIVET NRP 380 S6000314 3E 6 FT 2500M Technical Supplement FRC 6 DTMF Paging Unit option e o connector side solder side uma s 88 o 7 38 c m 5 moz 5 8 x 9 X101 3 579545MHZ IN N C 3S CHE D2 D3 DO DI 02 TRQZCP CS RSO Bl x NOTE us RESISTER VALUES ARE IN Q 1 10W 25 CAPACITOR VALUES ARE SOV lt CAPACITOR VALUES ARE TANTALUM INDUCTOR VALUES ARE IN H UNLESS OTHERWISE NOTED e E e RNC am t 4A 1 FT 2500M Technical Supplement FRC 6 DTMF Paging Unit option REF DESCRIPTION VALUE W TOL MFGR S DESIG YAESU P N X VERS FRC 6 Printed Circuit Board F32281014 C 0101 CHIP CAP WOMF 50V GRM40B103M50PT K22170817 C 0102 CHIP CAP 0 luF 25V F 000 7 2 05 C 0103 CHIP CAP 0 luF 25V F 00 22141005 C 0104 CHIP CAP 0 25V F GRM40F104225PT K22141005 C 0105 CHIP CAP 33pF 50V CH
56. age 3E 1 REF DESCRIPTION VALUE W TOL MFGR S DESIG YAESU PN VERS xxx MIC UNIT PCB With Components W O WIRE ASSY 51368001 Printed Circuit Board F3426103 C 1501 CAP 100pF 50V CH GRM39CH101J50PT K22174235 C 1502 CHIP CAP 100 50V CH GRM39CH101J50PT K22174235 C 1503 CHIP CAP 100pF 50V CH GRM39CH101J50PT K22174235 C 1504 CHIP CAP 100 50V CH GRM39CH101J50PT K22174235 C 1505 CHIP CAP 100pF 50V CH GRM39CH101J50PT K22174235 C 1506 CHIP CAP 100 50V CH GRM39CH101J50PT K22174235 C 1507 CHIP 100pF 50V CH GRM39CH101J50PT K22174235 C 1508 CHIP CAP 100pF 50V CH GRM39CH101J50PT K22174235 J 1501 CONNECTOR R41 2736H P1090677 JP1501 WIRE ASSY 19206351 3C FT 2500M Technical Supplement 4 2V 4 4V _ _ _ a EE EE 1 2 8V Q2001 Pin 3 2 8V 02001 Pin 1 TUNE SGL UNIT OPT 10N 20022 96 0029 R2020 0 oes szozu ah OS 92006 23C27 26R pee pem stoga gt amp x m ui 74 61072 JA J ach 2 UJ ET 19 uus I II pi i 225 5 99096290 E gt 17710 50 009 4 srn a lj
57. ap plied and the board is then baked to harden the resin and flow the solder For double sided boards no solder paste is applied but the board is baked or exposed to ultra violet light to cure the resin before dip soldering In our laboratories and service shops small quantities of chip components are mounted manually by applying a spot of resin placing them with tweezers and then soldering by very small dual streams of hot air without physical contact during soldering We remove parts by first removing solder using a vacuum suction iron which applies a light steady vac uum at the iron tip and then breaking the adhesive with tweezers The special vacuum soldering desoldering equipment is recommended if you expect to do a lot of chip replacements Otherwise it is usually possible to remove and replace chip components with only a tapered temperature controlled soldering iron a set of tweezers and braided copper solder wick Soldering iron temperature should be less than 280 6 P 1 4 Precautions for Chip Replacement X Do not disconnect a chip forcefully or the foil pattern may peel off the board X Never re use a chip component Dispose of all removed chip components immediately to avoid mixing with new parts Limit soldering time to 3 seconds or less to avoid damaging the component and board Removing Chip Components Remove the solder at each joint one joint at a time using solder wick w
58. as indicated below 4 W Spacer 4 W O Spacer J To remove a failed lamp use low wattage soldering iron and forceps to unsolder and free each lead then gently lift the bulb out of the hole 2 1 Modification for 9600 Baud Packet Note The two lamps on either side of the LCD use plastic spacers be careful not to lose these when removing the bulb and insert them again when installing a new bulb 7 Install replacement bulbs in the reverse man ner then reassemble the transceiver case Modification for 9600 Baud Packet Operation at high data rates requires special interfacing since the 2500 bandwidth and pre and de emphasis circuitry are not optimized for this mode of operation If you want to use your FT 2500M with a 9600 baud Packet TNC the following modification should enable better performance at this higher data rate However throughput performance at 9600 baud is not guaranteed QTY Part Comments 2pc 0 0 chip resistor Read notice at below right 1pc 10 kQ chip resistor You may have to experiment with this value for optimum audio input level 2pc lengths of wire Use stranded 22 AWG approx 5 cm in length 2 pc 1 uF tantalum chip capacitor If your TNC model does not have a capacitive coupled audio input output see the notice be low If you choose to perform this modification you will need a low wattage soldering iron tweezers and the
59. by PA module Q1009 M67781L up to 50 watts Harmonic spurious radiation in the final output is suppressed by a 3 pole lowpass filter on the Main Unit and the transmit signal then passes through 1 4 wave antenna switch 01016 UM9415 before delivery to the antenna Automatic Transmit Power Control RF power output from the final amplifier is sampled by C1064 and rectified by D1017 15597 The resulting DC is passed by high me dium low power controller Q1017 FMS1 and transmit inhibit gate Q1018 IMX1 to Automatic Power Controller Q1019 2SB1143S which regulates supply voltage to transmitter RF ampli fiers Q1009 and Q1010 so as to maintain stable high medium or low output power under vary ing antenna loading conditions Spurious Suppression Generation of spurious products by the trans mitter is minimized by the fundamental carrier frequency being equal to the final transmitting frequency modulated directly in the transmit VCO Additional harmonic suppression is pro vided by a 3 pole lowpass filter consisting of L1002 L1013 L1014 and C1002 C1061 C1063 C1065 C1067 and C1164 resulting in more than 60 dB harmonic suppression for transmitting frequencies in the amateur band prior to deliv ery to the antenna PLL Frequency Synthesizer PLL circuitry on the Main Unit consists of prescaler 01025 MC12022SLAD and PLL sub system IC 01024 MC145158F2 which contains a reference oscillator divider serial to paral
60. d and faulty components replaced and the need for realignment deter mined to be absolutely necessary The following test equipment and thorough familiarity with its correct use is necessary for complete realignment Correction of problems caused by misalignment resulting from use of improper test equipment is not covered under the warranty policy While most steps do not require all of the equipment listed the interac tions of some adjustments may require that more complex adjustments be performed afterwards Do not attempt to perform only a single step unless it is clearly isolated electrically from all other steps Have all test equipment ready before beginning and follow all of the steps in a section in the order presented Required Test Equipment 0 RF Signal Generator with calibrated output level at 200 MHz 1 Deviation Meter linear detector 1 AF Millivoltmeter 1 SINAD Meter O Inline Wattmeter with 5 accuracy at 200 MHz Regulated DC Power Supply adjustable from 10to 17 15 50 0 Dummy Load 100 at 200 MHz Frequency Counter 0 1 ppm accuracy at 200 MHz 1 AF Signal Generator O DC Voltmeter high impedance 1 Sampling Coupler 1 AF Dummy Load 8 5W Alignment Preparation amp Precautions 50 0 dummy load and inline wattmeter must be connected to the main antenna jack in all procedures that call for transmission except where specified otherwise Correct
61. er selectable from 5 to 50 kHz and Automatic Repeater Shift can set standard repeater shifts when you tune to a repeater subband A 1750 Hz tone generator is included in European versions A 39 tone pro grammable CTCSS encoder is built in as stand ard and the FTS 17A CTCSS unit can be installed to provide tone squelched private channels and a CTCSS paging bell feature to sound a paging alert tone when the tone squelch opens DTMF Dual Tone Multi Frequency based selective calling and private paging capabilities can be easily added with the optional FRC 6 controlled entirely from the front panel You can select any of 999 3 digit ID codes for your trans ceiver and then have your receiver stay quiet until your code is received from any standard DTMF equipped transceiver When a call is re ceived the FT 2500M displays the caller s code and a paging beeper can be set to sound and even to respond to the call automatically Seven DTMF code memories store your ID plus those of six other frequently called stations or groups you wish to monitor 1 1 Specifications General Frequency Range Channel Steps Frequency Stability Mode of Emission Antenna Impedance Supply voltage Current Consumption typical Operating Temp Range Case Size WHD Weight Transmitter Output Power high mid low Modulation Type Maximum Deviation Spurious Radiation Microphone Impedance Receiver Circuit Type IFs Sens
62. eserved Printed in Japan YAESU Performance without compromise 06519000 408 No portion of this manual may be reproduced without the permission of Yaesu Musen Co Ltd
63. ex ez co Sm 1 c m 5 xS 2 gt m 58 22 z c 2 z co lt eu ch zu Ez 5 E gt ac 2 lt O fr 2 TO rw gt O 22 a O 7 gt m caua e 2 gt z co lt 3 lt zi cda elm 88 95 0 u m 72 2 20 cox cc oo RI gt 5 ctu Z c r gt 0 2 Say Sq V ii 1 View amp Miscellaneous Parts R3806750 CASE TOP P1090352 CONNECTOR R4900811 CHASSIS T9206087 WIRE ASS Y P1090654 CONNECTOR MAIN Unit VCO Unit T9206000C WIRE 55 R3806730 CASE BOTTOM Non designated parts are available only as part of a designated assembly 1 15 LCD Control Unit Access To access the Control Unit and Display Unit first remove the VOL SQL and dial knobs by gently pulling them outward CJ Next remove two screws from each side of the top cover and one from the rear Tilt the rear of the cover upward then slide it out from the chassis Note that the single rear screw is dif ferent from the other four be sure to reinstall it in the correct location Be careful not to lose the plastic plug covering the cable entrance cutout in the chassis CJ Remove the two hex bolts from the front panel using a 3 5 mm hexagonal driver then gently loosen the front panel J Remove the two flat ribbon cables by using a
64. following components Po m Componenti L ocation is Fig 1 Modification Component Location Fig 2 RX Audio Component Location If you are not confident at surface mount soldering do not attempt the modification and contact your Yaesu dealer for assistance Remove the top cover as described on the pre vious page to expose the CNTL Unit Refer to Fig 1 to familiarize yourself with the part lo cations Fig 3 TX Audio Component Location Locate the unused pad beneath connector J2004 labeled C Fig 2 Install a 0 Q chip resistor across at this location and a wire to the pad just to the left labeled DISC This makes the connection for de emphasized dis criminator audio output for decoding Notice If your TNC does not use a coupling capacitor in line for transceiver audio connections you will need to substitute 1 uF tantalum chip ca pacitors in place of the 0 chip resistors Refer to your TNC documentation to determine cor rect placement for proper polarity FT 2500M Technical Supplement Modification for 9600 Baud Packet O Next locate the set of pads labeled MOD amp R above connector J2008 fig 3 Solder a 10 kQ chip resistor across pad R and 0 0 chip resistor across pad C and a wire lead to the adjacent pad Pre emphasized audio is fed to the transmitter here CJ Note the small plastic plug in
65. function selection toggle to select paging mode X Paging code memory selection press ox and rotate DIAL knob to select X CALL channel instant recall press GR to toggle X Priority channel recall press to toggle After programming memories you can activate Channel Display Only operation by turning the transceiver off then pressing and holding the amp keys together while powering on again Repeat this step to return the transceiver to normal 2 4 FT 2500M Technical Supplement The 2500 has been carefully aligned at the factory for the specified performance across the amateur band Realignment should therefore not be necessary except in the event of a compo nent failure All component replacement and service should be performed only by an autho rized Yaesu representative or the warranty pol icy may be voided The following procedures cover the some times critical and tedious adjustments that are not normally required once the transceiver has left the factory However if damage occurs and some parts are replaced realignment may be re quired If a sudden problem occurs during nor mal operation it is likely due to component failure realignment should not be done until af ter the faulty component has been replaced We recommend that servicing be performed only by authorized Yaesu service technicians who are experienced with the circuitry and fully Alignment equipped for repair and alignme
66. hetted with non acidic flux as shown below Avoid ap plying pressure and do not attempt to re move the tinning from the chip s electrode om c Su Grasp the chip on both sides with tweezers and gently twist the tweezers back and forth to break the adhesive bond while alternately heating each electrode Be care ful to avoid peeling the foil traces from the board Dispose of the chip when removed O After removing the chip use the copper braid and soldering iron to which away any excess solder and smooth the land for in stallation of the replacement part FT 2500M Technical Supplement Install a Replacement Chip As the value of some chip components is not indicated on the body of the chip be careful to get the right part for replacement Apply a small amount of solder to the land onone side where the chip is to be installed Avoid too much solder which may cause bridging shorting to other parts 1 Hold the chip with tweezers the desired position and apply the soldering iron with a motion line that indicated by the arrow in the diagram below Do not apply heat for more than 3 seconds 1 Remove the tweezers and solder the elec trode on the other side in the manner just described FT 2500M Technical Supplement Chip Component Information Notes 1 6 FT 2500M Technical Supplement Receive Signal Path Incoming RF from the antenna jack is deliv ered to the
67. itivity for 12dB SINAD Selectivity 6 60 dB IF Rejection Image Rejection Maximum AF Output 144 146 or 148 MHz Tx or 144 146 MHz or 140 174 MHz Rx 5 10 12 5 15 20 25 amp 50 kHz lt 10 ppm 20 to 60 50 ohms unbalanced 13 8 VDC 10 negative ground Rx 600 mA Tx hi mid low 12 9 5 20 to 60 C 160 x 50 x 180 mm w o knobs 1 5 kg 3 3 Ib 50 25 5W Variable Reactance 5 kHz less than 60 dB 2kQ Double Conversion Superheterodyne 21 4 MHz amp 455 kHz better than 0 2 uV 12 30 kHz better than 70 dB better than 70 dB 3 5 W into 4 ohms 910 THD Specifications are subject to change without notice or obligation 1 2 FT 2500M Technical Supplement Chip Component Information The diagrams below indicate some of the distinguishing features of common chip com ponents Capacitors Unit mm Sa Ty p RMC 1 10W 1 16W Resistors Marking 100 222 473 1 ric as One unit Multiplier code INDICATED LETTERS g e Examples 100 100 222 2 2kQ 473 56 1 3 FT 2500M Technical Supplement Chip Component Information Replacing Chip Components Chip components are installed at the factory by a series of robots The first one places a spot of adhesive resin at the location where each part is to be installed and later robots handle and place parts using vacuum suction For single sided boards solder paste is
68. lel data latch programmable divider and a phase comparator Stability is obtained by a regulated 5 V supply to Q1024 and temperature compen sating capacitors associated with 12 8 MHz fre quency reference crystal X1002 Receiver VCO Q301 25 3356 on the VCO Unit oscillates between 118 6 and 152 6 according to the programmed receiving frequency The VCO output is buffered by 0305 25 2759 on the VCO Unit and then returned to the MAIN Unit where a sample of the output is buffered by Q1028 25 2714 for application to prescaler swallow counter Q1025 There the VCO signal is divided by 64 or 65 according to a control signal from the data latch section of 1024 before being applied to the programmable divider section of the PLL chip The data latch section of Q1024 also receives serial dividing data from microprocessor Q2006 on the CNTL Unit which causes the predivided VCO signal to be further divided by 23 720 30 520 in the programmable divider section de pending upon the desired receive frequency so as to produce a 5 kHz or 6 25 kHz derivative of the current VCO frequency Meanwhile the refer ence divider section of Q1024 divides the 12 8 MHz crystal reference by 2560 or 2048 to produce the 5 kHz or 6 25 kHz loop reference respectively The 5 kHz or 6 25 kHz signal from the pro grammable divider derived from the VCO and that derived from the crystal are applied to the FT 2500M Technical Supplement
69. ning until the signal has been 1 7 Circuit Description tuned to its peak level preset by Center Stop trimmer VR2007 Transmit Signal Path Speech input from the microphone is deliv ered via the Mic Jack Unit and DISPLAY Unit to the CNTL Unit where it passed through Mic Mute switch D2003 DAP202K for amplification and pre emphasis by 02007 1 NJM2902M To prevent over deviation the audio is processed by IDC instantaneous deviation control stage 22007 and then lowpass filtered by Q2007 74 amp 4 NJM2902M before delivery to the modula tor on the VCO Unit If a CTCSS tone is enabled for transmission the subaudible tone from microprocessor Q2006 on the CNTL Unit is lowpass filtered by 02001 1 and mixed with the IDC processed speech audio Also DTMF tones generated by the FRC 6 op tion if installed or directly from the microproces sor are applied to the transmit audio chain at the input of the IDC stage The microprocessor also disables microphone at Mic Mute switch D2003 The modulating audio is delivered to diode 0305 15 214 on the VCO Unit frequency modulating the PLL carrier up to 5 kHz from the unmodulated carrier at the transmitting fre quency The modulated signal from transmitter VCO 0303 25 3356 is buffered by Q305 25 2759 and delivered to the Main Unit for amplification by 01012 28C2759 01011 MMBR951L and 01010 25 2053 The low level transmit signal is then finally amplified
70. nt Therefore if a fault is suspected contact the dealer from whom the transceiver was purchased for instruc tions regarding repair Authorized Yaesu service technicians realign all circuits and make com plete performance checks to ensure compliance with factory specifications after replacing any faulty components Those who do undertake any of the following alignments are cautioned to proceed at their own risk Problems caused by unauthorized attempts at realignment are not covered by the warranty policy Also Yaesu must reserve the right to change circuits and alignment procedures in the interest of improved performance without noti fying owners Under no circumstances should any align ment be attempted unless the normal function and operation of the transceiver are clearly un derstood the cause of the malfunction has been r sq e n sssi Case Disassembly Make sure the transceiver is off Remove the two screws from each side of the top and bot tom covers then loosen the two rear screws Next remove the top and bottom covers the CNTL Unit is now accessible from the top of the chassis J To expose the Main Unit PCB on the bottom of the transceiver chassis remove the 5 screws affixing the shield cover plate and remove the cover FT 2500M Technical Supplement MAIN Unit VCO Unit CNTL Unit DISPLAY Unit MIC Unit act clearly pinpointe
71. omponents W VCO UNIT W O IC M67781L Printed Circuit Board CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP TANTALUM CHIP CAP AL ELECTRO CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP CHIP CAP AL ELECTRO CAP CHIP CAP CHIP CAP FT 2500M Technical Supplement 0 001uF 15pF 2TpF 10 0 00107 3pF 0 00107 4pF 22pF 0 0010 0 00107 0 00107 0 00101 0 0010 0 0010 0 0010 2pF 0 0010 4pF 0 0010 0 0010 0 0107 0 OluF 0 OOluF 10 10 8pF 0 0107 0 0101 0 OluF 0 00107 0 0010 0 0010 4TpF 0 0010 210 1001 0 22uF 1007 0 0 010 0 OluF 0 0022uF 0 0010 39pF OuF 68pF 0 500V 500V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 90V 90V 50 90V 90V 50V 50V 90V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 50V 38 16V 25V 50V 50V 50V 50V 50V 16V 50V 2 00 U2 CO CO gt gt MAIN Unit YAESU P N CP4792001 F3427000 GRM42 2W5R102K500PT K22275809 GRM42 2CH15
72. on the CNTL Unit as the Scan Stop signal which causes the BUSY indi cation on the display when the squelch is open This signal also causes the microprocessor to cut receiver audio in two places on the CNTL Unit mentioned already opening audio mute gate Q2002 and pulling the audio line to ground just before the audio amplifier at Q2003 thus silenc ing the receiver while no signal is being received and during transmission When a carrier appears at the discriminator noise is removed from the output causing pin 14 of O1008 to go low This signals the microproces sor to activate the BUSY indicator through LCD driver Q3001 LC7582E The microprocessor then checks for CTCSS tone detection from the FIS 17A Tone Squelch Unit if installed and for Digital Code Squelch information if the FRC 6 Pager Unit is installed If not transmitting and tone squelch is not activated or if the received tone matches that programmed the microproces sor switches Q2002 and Q2003 to allow audio to pass to the amplifier and loudspeaker Center Stop Scanning To ensure that scanning stops at the center of a detected signal discriminator output from pin 9 of Q1008 is also delivered to comparator circuit Q2001 2902 amp on the CNTL Unit which compares the discriminator output to a preset DC level The output of the comparator connects to the Scan Stop line preventing the received signal from signalling the microproces sor to stop scan
73. p the test equipment as shown below for receiver alignment Receiver Alignment Setup RF Signal Generator Speaker or 4 ohm lead resistor AF Millivoltmeter Regulated 13 8V PSU SINAD Meter Distortion Interstage Transformers O Connect the DC voltmeter between 1003 pin 7 and chassis ground O Modulate the RF signal generator with 3 5 kHz deviation of a 1 2 tone 1 Adjust T1001 T1004 amp T1006 on the Main Unit for maximum voltage on the meter then once again for optimum SINAD at least 7 dBu for 12 dB SINAD S Meter Calibration While tuned to 146 000 MHz inject a 25 dBu RF signal modulated with 3 5 kHz deviation of a 1 kHz tone and adjust VR2006 on the CNTL Unit so that all S meter segments are just on Scanner Center Stop 1 Connect the DC voltmeter 3 V range be tween TP2002 and TP2001 on the CNTL Unit With both the transceiver and signal generator tune to 146 000 MHz set the SQL control fully counter clockwise the BUSY indicator should be on Inject 20 dBu RF modulated with 3 5 kHz deviation of a 1 kHz tone and adjust VR2007 on the CNTL Unit for 0 V on the voltmeter Squelch Preset the SQL control to the 10 o clock posi tion At the center of the band tune the RF signal generator to the same frequency and set the generator level to 12 dBu Turn VR1001 clockwise until the squelch just closes and then counter clockwise very
74. s in the 455 kHz IF before detection of the speech by ceramic discriminator CD1001 Detected audio is delivered from Q1008 to the CNTL Unit where it passes through buffer am plifier Q2018 28C2712GR and audio gate 02002 DTC114EK before de emphasis and high pass filtering by 02001 2 NJM2902M 4 Another audio muting gate Q2003 DTC114EK passes the signal which is then combined with beeper audio originating from the microprocessor through Beeper volume trimmer VR2001 The level of the combined receiver and beeper audio on the CNTL Unit is set by VOL potentiometer VR3002 on the DISP Unit and is then returned the Main Unit for amplification by 001023 FT 2500M Technical Supplement Circuit Descripton TDA2003H up to 2 watts for the optional head phone jack or 8 ohm loudspeaker Squelch Control The squelch circuit consists of noise amplifier Q1007 28C2712GR and a highpass filter and squelch trigger within Q1008 on the MAIN Unit and control circuitry within microprocessor 22006 SC418082CFU on the CNTL Unit When no carrier is received noise at the out put of the detector stage 01008 is amplified by 01007 and highpass filtered by the noise amp section of Q1008 and then rectified by D1012 to provide a DC control voltage for the squelch switching section within Q1008 With no carrier pin 14 of Q1008 is high This signal is inverted by Q1006 5 and delivered to BUSY pin 16 of main microprocessor Q2006
75. slightly so that it just opens Receiver Alignment Points 4 5 2 q 4 I M r J r s hg I A yo f 1 I M 8 e 2 8 VR2007 ee LE ae 5 ae 7 FT 2500M Technical Supplement VCO Unit component side chip only side Emitter 1 Base 1 Emitter 2 Collector Collector 1 Collector 2 Base Emitter Base Emitter Base 2 IMH5 H5 DTC124EK 25 2802759 U22 0304 0302 0305 2SC3356 R24 0301 303 VCO UNIT RESISTOR VALUES ARE iW 8 1 108 CAPACITOR VALUES ARE IN F SOV m eu _ T CAPACITOR VALUES ARE TANTALUM 85 mg dt INDUCTOR VALUES ARE IN H 0302 C302 3 28C3356 R24 85 UNLESS OTHERWISE NOTED 1136 10g CH 7 68 304 L302 x mo G 7 L303 21 C303 4 51 CH 15 CH R 2 a L301 0301 17363 5 p qoe Lo R301 Esc TURE IA SOE 9303 159 CH 5 m of 32 uv 94 s es o N b e 4 3 0 00 peu m ie d n ae 23 2 SR 2 a a TP303 304 TP30S TP H TP H EL To MAIN Unit See Page 38 1 3A 1 FT 2500M Technical Supplement REF C 0301 C 0302 C 0303 C 0304 C 0305 C 0306
76. t 1501 3 DISPLAY Unit To CNTL Unit J2006 See Page 3D 1 s TP 124444414 ao ULE 501 2 r 1 l4 26 25 5 23 22 2 HH 5 5 gt T 7 2 93001 o m LC7582E S las LG 3 8 5 5 3 zs 2 zs zs NEU T RESISTOR VALUES ARE IN G 1 109 CAPACITOR VALUES ARE 1 SOV D CAPACITOR VALUES ARE TANTALUM INDUCTOR VALUES IN SSS EOS il UNLESS OTHERWISE NOTED U 0 07 90 271807 27 gs 8 To MIC Unit JP1501 See Page 3C 3E 1 DISPLAY Unit REF DESCRIPTION VALUE WV TOL MFGR S DESIG YAESU P N VERS DISPLAY UNIT PCB With Components W O LIGHT GUIDE 2pcs NYLON RIVET 051367001 Printed Circuit Board F3426102 C 3001 CHIP CAP 0 010 50V GRM40B103M50PT K22170817 C 3002 CHIP CAP 0 010 50V GRM40B103M50PT K22170817 C 3003 CHIP CAP 0 10 25V B GRM40B104M25PT K22140811 3005 TANTALUM CHIP 3 30 16V TEMSVA1C335M 8R K78120021 C 3013 CHIP CAP 680pF 50V B GRM39B681M50PT K22174807 0 3014 CHIP CAP 0 luF 25V B GRM40B104M25PT 22140811 CS3001 CDS P2137 01 19090056 053001 LCD FTD
77. x2 1ST MIX 02011 5 ADJ SW lt 22 SCAN STOP Q1010 25 3356 91011 8 951 RF Q1004 25 2714 01012 155226 NOISE DET 02001 1 NJM2902M LPF RF DRIVE f RX 122 5 126 6MHz TX 144 0 148 0MHz H ONE SQ DATA Q1008 TONE SQL UNIT MC3372M FTS 17A iC 2ND MIX OSC FM MOD OPT ION X1001 mamam tees s s 21 855MHz 1 i yes 28C2714Y 55 28C2712GR BUFF 4556 FIL TERN AF MUTE 025 Q2007 4 02007 3 2251 NJM2902M NUM2S02M IC LPF BUFF TX Q1026 27 01015 52018 02002 IMXS 2 4 25811435 25 27126 DTC114EK LPF BUFF TX 9V AF MUTE RX 9V Q1013 1 9 REG VCO UNIT Palo m 01023 02006 9 10 15 0200 TDA2003H 2SC1623 LS RHSVAZSAA 115 AF PA RESET CIRCUI 21 CNTL UNIT F3426101 SPKR 053001 w 9 px FTD 1 0262 SP 2B LCD I DIAL INPUT COMMON 2 21M15BU MHz MCF 6 BUSY SW 1004 01012 0201 6 NOISE DET Q1008 MC 3372M ND OSC FM MOD 81007 25027126 FIL 11

Download Pdf Manuals

Related Search

Related Contents

発注先の進捗管理システムの開発 取扱説明書  Samsung 24" prémiový dotykový monitor s najpraktickejšími funkciami Užívateľská príručka  MANUAL DE INSTRUÇÕES  Operator Manual - Air  tender_document  Micro projet 1 : des matériaux, un outil  Parkinson Cowan LYRIC 50M User's Manual  Samsung SGH-F700 Benutzerhandbuch  Version 5.1.594  Especificaciones - MY VOLVO LIBRARY  

Copyright © All rights reserved. Failed to retrieve file