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HF/50 MHz TRANSCEIVER

FT-710

Introduction

This manual provides the technical information necessary 
for servicing the FT-710 HF/50 MHz TRANSCEIVER.
Servicing this equipment requires expertise in handling 

surface-mount chip components. Attempts by non-qualified 

persons to service this equipment may result in permanent 
damage not covered by the warranty, and may be illegal in 
some countries.
While we believe the information in this manual to be cor-
rect, YAESU assumes no liability for damage that may oc-
cur as a result of typographical or other errors that may be 
present. Your cooperation in pointing out any inconsisten-
cies in the technical information would be appreciated.

Important Note

This transceiver was assembled using Pb (lead) free solder, based on the RoHS specification.

Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for repairs performed on this apparatus. The solder stated 

above utilizes the alloy composition required for compliance with the lead-free specification, and any solder with the above alloy com

-

position may be used.

Technical Supplement

EH080H90A

©2022  YAESU  MUSEN  CO.,  LTD.         

Contents

Specifications

Exploded View
Block Diagram
Connection Diagram
Alignment
Board Unit (Schematics, Layouts & Parts)

MAIN Unit
PA Unit
DISPLAY Unit
JACK Unit

Summary of Contents for FT-710

Page 1: ...other errors that may be present Your cooperation in pointing out any inconsisten cies in the technical information would be appreciated Important Note This transceiver was assembled using Pb lead fre...

Page 2: ...perating Temperature Range 32 F to 122 F 0 C to 50 C Frequency Stability 0 5ppm after 1minute 32 F to 122 F 0 C to 50 C Supply Voltage DC 13 8V 15 Negative Ground Power Consumption Approx Rx no signal...

Page 3: ...Hz 28 30MHz 0 25 V IPO AMP2 50MHz 54MHz 0 2 V IPO AMP2 70MHz 70 5MHz 0 25 V IPO AMP2 Selectivity typ Mode 6dB 60dB CW BW 0 5kHz 0 5kHz or better 750Hz or less SSB BW 2 4kHz 2 4kHz or better 3 6kHz or...

Page 4: ...DER KNOB MULTI RA6400200 ENCODER KNOB SUB RA6402000 RUBBER KNOB TOP RA6400700 HOLDER RUBBER RA6403100 LIGHT GUIDE PWR RA6403200 LIGHT GUIDE VOX RA6403500 LIGHT GUIDE MCH RA6403300 LIGHT GUIDE MAIN RA6...

Page 5: ...0A SP NET RA602540A PORON SHEET 10x115 RA6334300 ThermalConductivePad PA UNIT RA6405300 BLIND SHEET SP RA6419300 SPONGE RUBBER PA UNIT Connect to J1002 on the MAIN Unit T9207491A WIRE ASSY T9207926 WI...

Page 6: ...BLOCK DIAGRAM 1 FT 710 Technical Supplement Block Diagram...

Page 7: ...CONNECTION DIAGRAM 1 FT 710 Technical Supplement Connection Diagram...

Page 8: ...1GHz Frequency Counter SINAD Meter RF Millivoltmeter DC Voltmeter DC Ammeter 30A 16 Ohm Dummy Load 100 watts 50 Ohm Dummy Load 100 watts 100 Ohm Dummy Load 200 watts 150 Ohm Dummy Load 100 watts In Li...

Page 9: ...nit Press and hold in the BAND QMB and NAR keys while turning the radio ON to en ter the alignment mode Rotate the FUNC knob to select the alignment parameter 003 GN REF FREQ Rotate the STEP MCH DSP k...

Page 10: ...Parameter RF Signal Generator Frequency AF Millivoltmeter 028 RX IF AGC 7 7 150MHz 10dB V 7 150MHz 2 0dB 0 5dB 029 RX IF AGC 14 14 200MHz 10dB V 14 200MHz 030 RX IF AGC 21 21 200MHz 10dB V 21 200MHz 0...

Page 11: ...NC knob to select the alignment parameter 046 RX FM SQL THW Press the STEP MCH DSP knob Set the RF Signal Generator to 8dB V at the 51 500MHz of a 1kHz 1 75kHz deviation FM modulation audio signal Rot...

Page 12: ...elect the alignment parameter 050 TX MF PREDR BIAS Press and hold the PTT switch then adjust the STEP MCH DSP knob so that the DC amme ter reading is 100mA 10mA Release the PTT switch Rotate the FUNC...

Page 13: ...djust the STEP MCH DSP knob so that the DC amme ter reading is 1 5 A 150mA Release the PTT switch Rotate the FUNC knob to select the alignment parameter 058 TX VHF FINAL BIAS Press and hold the PTT sw...

Page 14: ...ment Connect the 50 Ohm Dummy Load and Watt meter to the ANT jack Press and hold in the BAND QMB and NAR keys while turning the radio ON to en ter the alignment mode 1 Rotate the FUNC knob to select t...

Page 15: ...0W 144 Maximum deflection 18MHz 145 Rotate the STEP MCH DSP knob 101W 5W 1W 147 Maximum deflection 148 50W 5W 0W 150 Maximum deflection 151 20W 2W 0W 153 Maximum deflection 154 10W 1W 0W 156 Maximum...

Page 16: ...ALC 28 244 TX REV ALC 50 UK version only Connect the 16 6 Ohm Dummy Load to the ANT jack Rotate the FUNC knob to select the align ment parameter 245 TX REV ALC 70 Key the transmitter then rotate the...

Page 17: ...FT 710 Technical Supplement MAIN 1 MAIN Unit Circuit Diagram MAIN Unit CNTL...

Page 18: ...FT 710 Technical Supplement MAIN 2 MAIN Unit Circuit Diagram MAIN Unit DVI...

Page 19: ...FT 710 Technical Supplement MAIN 3 MAIN Unit Circuit Diagram MAIN Unit DSP...

Page 20: ...FT 710 Technical Supplement MAIN 4 MAIN Unit Circuit Diagram MAIN Unit AF...

Page 21: ...FT 710 Technical Supplement MAIN 5 MAIN Unit Circuit Diagram MAIN Unit RX...

Page 22: ...FT 710 Technical Supplement MAIN 6 MAIN Unit Parts Layout side A 1 2 3 4 5 6 A B C D E F G H...

Page 23: ...FT 710 Technical Supplement MAIN 7 MAIN Unit Parts Layout side B 1 2 3 4 5 6 a b c d e f g h...

Page 24: ...1552C1H6R0DA01D K22178208 1 A C3 C 1056 CHIP CAP 22pF 50V CH GRM1552C1H220JA01D K22178220 1 A B2 C 1057 CHIP CAP 4 7uF 50V B GRM21BB31H475KE51L K22170859 1 A C3 C 1058 CHIP CAP 5pF 50V CH GRM1552C1H5R...

Page 25: ...K22140830 1 B a1 C 1804 CHIP CAP 22uF 25V X5R GRM21BR61E226ME44L K22140830 1 B a1 C 1805 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 B a1 C 1806 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K2...

Page 26: ...3 C 2093 CHIP CAP 10uF 10V B GRM188B31A106ME69D K22104810 1 B b3 C 2095 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 B b3 C 2099 CHIP CAP 10pF 50V CH GRM1552C1H100JA01D K22178212 1 B b3 C 210...

Page 27: ...1 A E1 C 2639 CHIP CAP 10uF 25V X7R GRM31CR71E106KA12L K22141819 1 A C2 C 2641 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 A B1 C 2642 CHIP CAP 10uF 25V X7R GRM31CR71E106KA12L K22141819 1 A...

Page 28: ...50V X7R GRM155R71H103KA88D K22178848 1 B g2 C 2757 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 B g2 C 2768 CHIP CAP 1uF 16V B GRM155B31C105KA12D K22128817 1 A D2 C 2769 CHIP CAP 100pF 50V CH...

Page 29: ...4D K22178872 1 A A6 C 3075 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 A A6 C 3076 CHIP CAP 1uF 25V X5R GRM155R61E105KE11D K22149010 1 A D5 C 3077 CHIP CAP 0 0018uF 50V C0G GRM1555C1H182JA01...

Page 30: ...CAP 1uF 25V X5R GRM155R61E105KE11D K22149010 1 A D5 C 3151 CHIP CAP 68pF 50V CH GRM1552C1H680JA01D K22178232 1 A C5 C 3152 CHIP CAP 1uF 25V X5R GRM155R61E105KE11D K22149010 1 A C5 C 3154 CHIP CAP 0 01...

Page 31: ...56pF 50V CH GRM1552C1H560JA01D K22178230 1 A B4 C 3228 CHIP CAP 0 01uF 50V X7R GRM155R71H103KA88D K22178848 1 A B4 C 3229 CHIP CAP 1uF 25V X5R GRM155R61E105KE11D K22149010 1 A B6 C 3230 CHIP CAP 0 001...

Page 32: ...78872 1 A B4 C 3307 CHIP CAP 0 01uF 50V X7R GRM155R71H103KA88D K22178848 1 A E5 C 3308 CHIP TA CAP 1uF 35V TAJA105M035RNJ K78160098 1 A E5 C 3309 CHIP CAP 0 01uF 50V X7R GRM155R71H103KA88D K22178848 1...

Page 33: ...GRM155B11H102KA01D K22178809 1 A D5 C 3475 CHIP CAP 0 001uF 50V B GRM155B11H102KA01D K22178809 1 A E5 C 3476 CHIP CAP 0 01uF 50V X7R GRM155R71H103KA88D K22178848 1 A D5 C 3477 CHIP CAP 0 01uF 50V X7R...

Page 34: ...1 G2070994 1 A A4 D 3038 DIODE BAS316 G2070716 1 A F4 D 3039 DIODE BAS316 G2070716 1 A E6 D 3040 DIODE BAS316 G2070716 1 A A4 D 3041 DIODE RN142S TE61 G2070994 1 A E5 D 3042 DIODE RN142S TE61 G2070994...

Page 35: ...B 101MT L1692282 1 A G3 L 2004 CHIP COIL 2 2uH SWRH5D28S 2R2NT L1692236 1 A G3 L 2005 CHIP COIL 2 2uH SWRH5D28S 2R2NT L1692236 1 A G3 L 3001 M RFC 1000uH 10 NLFV32T 102K EF L1692243 1 A D6 L 3002 M RF...

Page 36: ...IL 0 1uH 2 C2520C R10G RA L1691294 1 A D4 L 3069 CHIP COIL 0 082uH 2 C2520C 82NG RA L1691293 1 A C4 L 3070 CHIP COIL 0 12uH 2 C2520C R12G RA L1691295 1 A D4 L 3071 CHIP COIL 0 1uH 2 C2520C R10G RA L16...

Page 37: ...19B G1095782 1 A E2 Q 2625 TRANSISTOR UMC5N TR G3070137 1 A B3 Q 2628 IC NJM12902V TE1 G1093592 1 A E2 Q 2631 TRANSISTOR 2SD1628G TD E G3416288 1 A B2 Q 2632 IC SN74HCT04PWR G1094484 1 A E2 Q 2633 TRA...

Page 38: ...16SK103FTH J24189489 1 A C3 R 1045 CHIP RES 470 1 16W 5 RMC1 16S 471JTH J24189021 1 A D2 R 1046 CHIP RES 10 1 16W 5 RMC1 16S 100JTH J24189001 1 A B3 R 1047 CHIP RES 6 8k 1 16W 1 RMC1 16SK682FTH J2418...

Page 39: ...1JTH J24189021 1 A D3 R 1143 CHIP RES 470 1 16W 5 RMC1 16S 471JTH J24189021 1 A D3 R 1144 CHIP RES 4 7k 1 16W 5 RMC1 16S 472JTH J24189033 1 A D3 R 1145 CHIP RES 0 1 16W 5 RMC1 16S JPTH J24189070 1 A F...

Page 40: ...1 16S 103JTH J24189037 1 A G3 R 2026 CHIP RES 100k 1 16W 5 RMC1 16S 104JTH J24189049 1 A F3 R 2030 CHIP RES 8 2k 1 16W 5 RMC1 16S 822JTH J24189036 1 A E3 R 2031 CHIP RES 100k 1 16W 5 RMC1 16S 104JTH J...

Page 41: ...16S JPTH J24189070 1 A B1 R 2618 CHIP RES 100k 1 16W 5 RMC1 16S 104JTH J24189049 1 A E1 R 2619 CHIP RES 1M 1 16W 5 RMC1 16S 105JTH J24189061 1 A E1 R 2620 CHIP RES 150k 1 16W 5 RMC1 16S 154JTH J241890...

Page 42: ...HIP RES 470 1 16W 5 RMC1 16S 471JTH J24189021 1 A E2 R 2699 CHIP RES 0 1 16W 5 RMC1 16S JPTH J24189070 1 B d2 R 2700 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J24189037 1 A B3 R 2701 CHIP RES 22 1 16W 5 RM...

Page 43: ...C1 R 2793 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J24189037 1 A C2 R 2807 CHIP RES 100k 1 16W 5 RMC1 16S 104JTH J24189049 1 A E2 R 2807 CHIP RES 0 1 16W 5 RMC1 16S JPTH J24189070 2 A E2 R 2809 CHIP RES...

Page 44: ...037 1 B e6 R 3061 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J24189037 1 B e6 R 3062 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J24189037 1 B e6 R 3063 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J24189037 1 B e6 R 3064...

Page 45: ...R 3139 CHIP RES 10 1 16W 5 RMC1 16S 100JTH J24189001 1 A E5 R 3140 CHIP RES 10 1 16W 5 RMC1 16S 100JTH J24189001 1 A E5 R 3158 CHIP RES 18 1 16W 5 RMC1 16S 180JTH J24189004 1 A D4 R 3159 CHIP RES 18...

Page 46: ...58PT 1917 L0023156 1 A C4 T 3004 BALUN TRANSFOMERS 458PT 1917 L0023156 1 A D4 T 3005 BALUN TRANSFOMERS 458PT 1917 L0023156 1 A C3 T 3006 BALUN TRANSFOMERS 458PT 1917 L0023156 1 A D3 T 3007 COIL WIDE T...

Page 47: ...FT 710 Technical Supplement PA 1 PA Unit Circuit Diagram...

Page 48: ...FT 710 Technical Supplement PA 2 PA Unit Parts Layout side A 1 2 3 4 5 6 7 A B C D E F G...

Page 49: ...FT 710 Technical Supplement PA 3 PA Unit Parts Layout side B a b c d e f g 1 2 3 4 5 6 7...

Page 50: ...CHIP CAP 0 01uF 50V X7R GRM155R71H103KA88D K22178848 1 A B6 C 4066 CHIP CAP 0 01uF 50V X7R GRM155R71H103KA88D K22178848 1 A A4 C 4075 CHIP CAP 0 001uF 50V B GRM155B11H102KA01D K22178809 1 A A4 C 4076...

Page 51: ...4218 CHIP CAP 0 01uF 50V X7R GRM155R71H103KA88D K22178848 1 A B1 C 4219 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 A D6 C 4220 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 A B1 C...

Page 52: ...AP 680pF 630V C0G GRM31B5C2J681JW01L K22281242 1 A B3 C 4336 CHIP TA CAP 47uF 16V TMCMC1C476MTRF K78120057 1 A B6 C 4338 CHIP CAP 47pF 630V C0G GRM31A5C2J470JW01D K22281228 1 A C3 C 4339 CHIP CAP 12pF...

Page 53: ...4429 CHIP CAP 0 0022uF 50V B GRM155B11H222KA01D K22178813 1 A F2 C 4430 CHIP CAP 1uF 25V X5R GRM155R61E105KE11D K22149010 1 A B5 C 4432 CHIP CAP 68pF 50V CH GRM1552C1H680JA01D K22178232 1 A E2 C 4433...

Page 54: ...2 CERAMIC CAP 10pF 3KV SL CC45SL3FD100JYNNA K00359037 1 A F2 C 4513 CHIP CAP 0 01uF 50V X7R GRM155R71H103KA88D K22178848 1 A G1 C 4514 CERAMIC CAP 10pF 3KV SL CC45SL3FD100JYNNA K00359037 1 A F2 C 4515...

Page 55: ...68 1 A E2 D 4039 DIODE RB521VM 30TE 17 G2071668 1 A E2 D 4040 DIODE BAS316 G2070716 1 A F1 D 4041 DIODE BAS316 G2070716 1 A E5 D 4042 DIODE BAS316 G2070716 1 A G4 D 4043 DIODE BAS316 G2070716 1 A E4 D...

Page 56: ...OIDAL COIL 1 13uH ERLA228 L0023246 1 A B2 L 4044 COIL A1 ERSD116 1 L0023334 1 A E2 L 4045 TOROIDAL COIL 1 04uH ERLA227 L0023256 1 A C2 L 4046 TOROIDAL COIL 0 578uH ERLA225 L0023234 1 A B2 L 4047 TOROI...

Page 57: ...070084 1 A G3 Q 4058 TRANSISTOR DTC114EUA T106 G3070084 1 A E6 Q 4059 TRANSISTOR 2SC4081 T106 R G3340818R 1 A G1 Q 4060 TRANSISTOR DTC114EUA T106 G3070084 1 A E4 Q 4061 TRANSISTOR DTC114EUA T106 G3070...

Page 58: ...5 RMC1 16 333JATP J24185333 1 A B1 R 4072 CHIP RES 39k 1 16W 5 RMC1 16 393JATP J24185393 2 A B1 R 4073 CHIP RES 22k 1 16W 1 RMC1 16 223FTP J24183223 1 A B6 R 4074 CHIP RES 47k 1 16W 1 RMC1 16 473FTP...

Page 59: ...183682 1 A B6 R 4168 CHIP RES 3 3k 1 16W 1 RMC1 16 332FTP J24183332 1 A E2 R 4169 CHIP RES 56 1W 5 RMC1 560JTE J24305560 1 A E2 R 4170 CHIP RES 2 7k 1 16W 1 RMC1 16 272FTP J24183272 1 A E2 R 4171 CHIP...

Page 60: ...5 RMC1 16 000JATP J24185000 1 A B4 R 4264 CHIP RES 5 6k 1 16W 1 RMC1 16 562FTP J24183562 1 A A6 R 4267 CHIP RES 1k 1 16W 5 RMC1 16 102JATP J24185102 1 A A7 R 4269 CHIP RES 0 1 10W 5 RMC1 10T 000J J24...

Page 61: ...F3AA012E F M1190224 1 A E3 RL4040 RELAY FTR F3AA012E F M1190224 1 A E6 RL4041 RELAY FTR F3AA012E F M1190224 1 A G2 RL4042 RELAY FTR F3AA012E F M1190224 1 A E3 RL4043 RELAY DC12V FTR B4SA012Z B05 M1190...

Page 62: ...FT 710 Technical Supplement DISPLAY 1 DISPLAY Unit Circuit Diagram...

Page 63: ...FT 710 Technical Supplement DISPLAY 2 DISPLAY Unit Parts Layout side A side B a b c d e f g h 1 2 3 1 2 3 A B C D E F G H...

Page 64: ...C 6055 CHIP CAP 22uF 25V X5R GRM21BR61E226ME44L K22140830 1 B a2 C 6056 CHIP CAP 47pF 50V CH GRM1552C1H470JA01D K22178228 1 A B2 C 6057 CHIP CAP 0 001uF 50V C0G GRM1555C1H102JA01D K22179756 1 A B1 C...

Page 65: ...1 A C2 C 6134 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 B e1 C 6135 CHIP CAP 0 1uF 50V X7R GRM155R71H104KE14D K22178872 1 A C2 C 6136 CHIP CAP 22uF 6 3V B GRM21BB30J226ME38L K22080806 1 A...

Page 66: ...3T G2071640 1 A F2 D 6028 LED 15 215 T1D APQHY 3T G2071640 1 A G2 D 6029 LED 15 215 T1D APQHY 3T G2071640 1 A G2 D 6030 REPLACED BY 19 217 BHC ZL1M2RY 6T G2071620 1 A A1 D 6031 LED 19 213 S2C AP1Q2B...

Page 67: ...6S 103JTH J24189037 1 B f1 R 6007 CHIP RES 0 1 16W 5 RMC1 16S JPTH J24189070 1 B f1 R 6008 CHIP RES 0 1 16W 5 RMC1 16S JPTH J24189070 1 B f2 R 6009 CHIP RES 4 7k 1 16W 5 RMC1 16S 472JTH J24189033 1 B...

Page 68: ...J24189037 1 B f2 R 6086 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J24189037 1 B b1 R 6087 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J24189037 1 A C1 R 6089 CHIP RES 22 1 16W 5 RMC1 16S 220JTH J24189005 1 B e1...

Page 69: ...1 16SK101FTH J24189504 1 B g2 R 6176 CHIP RES 100 1 16W 1 RMC1 16SK101FTH J24189504 1 B g2 R 6177 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J24189037 1 B g2 R 6178 CHIP RES 10k 1 16W 5 RMC1 16S 103JTH J241...

Page 70: ...B g2 R 6521 CHIP RES 0 1 16W 5 RMC1 16S JPTH J24189070 1 B g2 R 6522 CHIP RES 0 1 16W 5 RMC1 16S JPTH J24189070 1 B g2 R 6523 CHIP RES 0 1 16W 5 RMC1 16S JPTH J24189070 1 B g2 R 6524 CHIP RES 0 1 16W...

Page 71: ...B g1 T 6003 CHOKE COIL DLP11SN900HL2L L1691732 1 B g1 T 6004 CHOKE COIL DLP11SN900HL2L L1691732 1 B g1 T 6005 CHOKE COIL DLP11SN900HL2L L1691732 1 B g1 VR6001 POT RK09D1130C2P 10KB J60800268 1 A H3 V...

Page 72: ...JACK 1 Circuit Diagram FT 710 Technical Supplement JACK Unit...

Page 73: ...JACK 2 side A side B Parts Layout FT 710 Technical Supplement JACK Unit...

Page 74: ...1D L9190111 1 B J 7001 CONNECTOR AYF530635 P1091610 1 B J 7002 CONNECTOR SJA20 06WH ET P0091683 1 B J 7003 CONNECTOR AS Y RJ45 00 P1091734 1 A J 7004 CONNECTOR PJ30460 GPBOAS003 P1091686 1 A Q 7001 TR...

Page 75: ...without the permission of YAESU MUSEN CO LTD YAESU MUSEN CO LTD Tennozu Parkside Building 2 5 8 Higashi Shinagawa Shinagawa ku Tokyo 140 0002 Japan YAESU USA 6125 Phyllis Drive Cypress CA 90630 U S A...

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