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YAESU FT-101ZD Service manual

1. 3 48 NB FIX UNIT 1961 3 50 PRE MIX UNIT PB 1962A 2 htt 3 52 3 54 AE UNEE PB964 3 58 PREMIX LOCAL UNIT 1965 3 62 VFO ASSEMBLY PB 1440B 3420 een t ttn no 3 64 RECTIFIER A UNIT 1967 2 rere ttt 3 66 CAPACITOR UNIT PB 1969A 3 67 RECTIFIER UNIT PB 1968B 3 68 TRIMMER BOARDS PB 1970A B 1902 3 70 LED UNIT PB 1974A SELECT SW UNIT 1966 3 72 BANDWIDTH CONTROL UNIT 1972 3 73 CLARIFIER UNIT 1973 3 73 LEVER SWITCH UNIT 1975 ttt 3 74 COUNTER DISPLAY UNITS 1978 1979 1980 777 3 75 DRIVER FINAL AMPLIFIER STAGES PB 1714A 1715A nnn 3 78 AM UNIT E2040 ahua sassa e 3 80 For Service M MAURITRON TEC 8 Cherry Tree Oxo 4QY xon Tel 01844 351694 anuals Contact HNICAL SERVICES Rd Chinnor 01844 3525
2. l4 oS Z es SS SS TE 8 9 Q gt a t i m L 1 Qi HWI 9i z k 1 89 S oz 100 2 3 ONE O 2 99 Tps 211 5 589 662 0 9 1 1 100 BED 008 Tos 0 0 5 1 1 StL OO UU vj PB 1962 PREMIX UNIT 3 5 I3 15 I7 19 S DC VOLTAGE 3 52 SERVICING PREMIX UNIT PARTS LAYOUT Viewed from component side Viewed from solder side SOURCE DRAIN COLLECTOR EMITTER PIN 14 GATE BASE 2SK 19GR 25C373Y SN76514N For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352554 Email enquiries mauritron cO Uk 3 53 IF UNIT PB 1963C SERVICING 5 WIDTH Sw ALC METER CO WIDTH CONT s lt lt lt lt lt lt 27 yn oo uonuneus s uinbu reur3 69296 77810 XE3 6916 810 101 ADP 6XO 9911 9 8 5 TWOINHOSL 00 62 EF
3. 3 23 FT 101Z ANALOG SPURIOUS AT 21 2 27 3 24 AF UNIT CAPACITOR POLARITY 3 25 MAINTENANCE AND ALIGNMENT sae 3 26 FAULT 2 3 37 TROUBLESHOOTING EDI PIN SAIS LEER ADI 3 38 TROUBLESHOOTING CHART 3 40 RELAY CONNECTION INFORMATION 3 47 CIRCUIT BOARD LAYOUTS AND TEST VOLTAGES RF UNIT 1960 3 48 NB FIX UNIT 1961 3 50 PRE MIX UNIT PB 1962A 3 52 IF UNIT PB 19630 u 3 54 AE UNIT uuu u 3 58 PREMIX LOCAL UNIT 1965 3 62 VFO ASSEMBLY 1440 3420 3 64 RECTIFIER A UNIT 1967 3 66 CAPACITOR UNIT 1969 3 67 RECTIFIER B UNIT PB 1968B 3 68 TRIMMER BOARDS PB 1970A B PB 1902 3 7
4. 3 12 CIRCUIT TRACE REPAIR gt 5 6 3 14 MODIFICATIONS REVERSAL OF FV 901DM DIAL SENSE 3 16 RECTIFIER B UNIT MODIFICATION I ttr 3 18 LOW PASS FILTER ADDITION gt 58 5 3 20 VOX CIRCUIT MODIFICATION ee I hehehe 3 21 COUNTER CIRCUIT MODIFICATIONS n M t e ttt 3 22 VFO DRIFT WHEN ADJUSTING DIMMER CONTROL 3 23 FT 101Z ANALOG SPURIOUS 21 2 2 eee eee er t n t tns 3 24 AF UNIT CAPACITOR POLARITY 3 25 MAINTENANCE AND ALIGNMENT 55555 e t t tn ng 3 26 FAULT 55555 3 37 TROUBLESHOOTING 5555 9 3 38 TROUBLESHOOTING CHART reser eee 3 40 RELAY CONNECTION INFORMATION tn t t t t n n 3 47 Provided by http www yaesu museum com Downloaded by Amateur Radio Directory For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk CIRCUIT BOARD LAYOUTS AND TEST VOLTAGES RF UNIT 1960
5. 050 kd 7H39868 857 X4 6868 asn 250 9 52 PISO Ot Lew lt o am em 0 9 40 6 um s c 9m ch a cm cm cm wor 2 5 TECHNICAL NOTES 100080 1 95 WvHoOviO 20189 OJA 1X3 ino 3 Ano 29 02101 13 LIN svid Wie 1338 71 1041402 10916 11955 72 1 in ae a GE ACQ AOIZ aww es NEM lt 65 AS 29 66915 2 552 5 8 61 Aff c 6 09 1090 20 Linn 548622 1V201 XIW3tid vo b 62856 Jd8 TINA 548982 seoz zeos 54812 L 9012 101280 2928621 OQ Sl 094 gt ZHAS 7868 12 714 855 tOvV3X 440 ee meo cum eo eae e ss amp 330 3053 XL IAOW WV 934 8 O 9384 21184 L m 2402 WIG 938 A008 250 8bZOtION Acieisz 9059 60so T zoo Vd
6. 10 TY 208 216 224 100245101 Carbon film 1 4W VJ 1008 rT 230238 HIMEN sss TEATRO C CSF A NT L uuum ee s 575 5 5 wm Sasi sus __ 8231 33535 2005455 7 7 7 3900 mer 234332 02179009 Wousmi 7 REPAIR PARTS LED BOARD C102 108 0175101 Ceramic 5 SL 100 pf PB 1390 0001390 Board D9 G2090060 GD4 203 SRD AEE SOTA SRI X VENE 27 NEL U O n ARMA EIU RF UNIT pod 103 106 K13170103 u 0 01 uF 110 112 114 115 117 119 124 0 047 gF Electrolytic 16WV TT 10 uF fe 0019600 RF unit with components TRIMMER CAPACITOR 1960 00019604 Board TC101 K9 1000019 ECV 1ZW 10 40 10 pF m i 4 2 gt 0 O 2 O x D NO 9 Uad m c raion 80 esso a TRANSFORMER EMG C Sea n ss ss MEER s S A SION TEE EE EE LA 9 _____ L MEAN NUN R119 100245479 Carbon film 1 4W VJ 4709
7. Wrapping Fs L LLL 7777 L C L ST 150405 L119000 Micro inductor tau O C L _ Liisor _____ C 1 smk ___ T C C S 5 RECT UNIT DUUM emere Description _______ OT RECT B unit with componens mec G PC Board _ 5263031 DOSUC aE SE SAE NEE NEMONES EON DURUM SENEC ________ 003 E T PY 05000005 103407830 osos Wrapping emini _ ae NAME s ss S S NIT SR NRE DUUM nin te eee 5041005 02013550 Si 181559 RECT AUNIT ___ ioe 51002 1005 67090002 D M SEV RECT Avani n O EC Board LI L SM eh DIEN a ee _ E Jj Giwoiei i acu 0903 63110150 TR 25 1013 x L menge Wowsm 7 7 e eR uS E rio 7 7 7 7 5 34 ae t5 REPAIR PARS 25 1674 2323 50177103 Mylar 0 01 uF 2SC1815GR Tantalum 20 6 8 uF Electrolytic 16WV 10 QW 33 uF gt wv eae G3316740L G3318150G f _____ _____
8. EEA 633037207 C MEN AMNEM QEMNNE 024 MM sss Lp mee OO Dao 162022360 152 __ _________________ cee prec cul quc e pol deu c Ll mssrn __6 _6_ _ _____ a RECT B UNIT 808 _ 400248222 5 22ko 0019670 unit with components nene 7 19 ms 10252233 j _ i ULL 099 G30950 TR 54900 Re eee ee ___ eee MEN ee ee smo CH Ceramic dg CSCS kwrmoo ____ __ C809 810 812 K13170008 7 15 819 820 MORE 824 826 RESTO _ _ J Carbon fim Tj 366 C825 70167334 Tantalum 10WV 033 4F E ee ee ed cn ee ee vamaBtECAPACHOR ___ ____________ 7 90000024 521 R112 901 905 13170103 50 0 01 ul 908 911 40140106 Electrolytic 25WV 10 uF 907 K40140107 T R REPAIR PARTS CAPACITOR C906 41140338 Electrolytic 25WV 3300 C1017 K13170473 Ceramic 50WV 0 047 uk C1016 K 12279003 4 500WV 0 0022 uF REF C1005 1006 12279004 0 0047 uF RELAY 1013 1015 P 2 RD 1018 C1010
9. 2 i 26 1583 5 VR 4201 C30 00 1 INGO NN 1 1 NB p 990 E 5 z Ju 5 S d e E 6 5 qoe E zi 3 d A l 27 8 9 t 2 2 9 151555 x ele a 9 a s WP o 05 1 1 9 Big 03 8 SA x E 2SC372Y 3855 mI E x Q ms sa oF R33 560 3 5 9 JE 477 77 de 54 s Ss es uu m m 4202 EXT 6V VFO CHI FIX CH2 FIX 6V COLLECTOR EMITTER BASE NB OFF 0 26 372 FIX OFF maseh ON NB OFF 2SC1583 3 50 4E a SERVICING NB FIX UNIT PARTS LAYOUT Viewed from solder side For Service Manuals Con ta MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor d Oxon OX9 4QY Tel 01 844 351694 Fax 01844 352554 x Email enquiries mauritroncouk z 58 g 6 4 c6 o 3 o o gt DU ME E NE 2 a 55 s am 2U 5 Z l dl 100000000000 201 1202 3 51 SERVICING PREMIX UNIT PB1962A Early model Before Prod 16 4 59 E mo XO gt 5 218 38r s Mr 4 Ol
10. 7 Carbon film 1 4W TJ 560 R205 7 7 ia ____ pemsn _ ame J mom opes 7 _ 398 mos 90024556 7 __ seke POO 1823312334 10014530 CT 2387 2340 2383 2346 12001 70097 43090002 900945560 5 52005 N3090008 51864251 182308 2318 777 23232 C2324 2326 7 T oo DISPLAY UNIT 3420 E 2311 Symbol PartNo Description 8292 7 7 7 7 oe 7 77 C0020982 with components _ R2331 7 PB2098A F0002098A Printed Circuit Board R2317 2319 10145102 7 2 T ike 2321 2323 ee eT o Roas 00245102 EL Ko 2336 2339 2342 2345 _ E x j R23 29 2332 00245132 4 7 7 1550 P2335 2338 1 me j 24234 _ 2347 P2202 21090075 5047 08 192024404 R2302 231s 1002562 v ot 707 MEN pemsm kn MU 7 7 Vi took COUNTER UNIT 3420 PartNo ____ _______ C0020862 FCB with components C L C FO002086B Printed Circuit Board _______ 00179008 Ceramic _ SOWV CH
11. 3015 2252 1150 t me ub 4o um 8868 M2 7H49968 857 1 6 6 BSN cac 43n8 250 262 8961156 160 viso MS Ml MD 99 52 SISO a FT TECHNICAL NOTES FREQUENCY RELATIONSHIPS CRYSTAL CRYSTAL Ist MIX MCF NB GATE FILTER 2nd MIX FILTER 3rd MIX IF AMP DET cf 8987 5 kHz cf 89875 2 LOCAL AMP WIDTH CONTROL 19 7475MHzt Af pex rx 89875kHz AM TX CARRIER 8988 3 kHz For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 01844 352554 Email enquiries mauritron co uk BAND RANGE BAND FREQUENCY 7160 15 9875 MHz 7160 10 4875 10 9875 MHz 80 179875 80 12 4875 12 9875 40 21 4875 40 15 9875 16 4875_ After Prod 17 15 29 9875 30 4875 12 389875 12 33 4875 33 9875 OA 42 4875 10 36 9875 38 9875 42 9875 43 4875 43 9875 0 CRYSTAL DATA 10120 HOLDER E CRYSTAL S s We GG C sk ME NE S S O MEE 7H
12. es TORRA BI MERC 238 G pes 1948735 _ s CARRIER HC I8 U Fundamental ae UN ae a EU s ee wan 190475 Fundamen 15 mw UNA O ED NEC esse __ 3 K 2mW mo s S XCO FREQUENCY 19743 19753 kHz 4 After Prod 17 Decided by circuit 2 7 TECHNICAL NOTES CIRCUIT DESCRIPTION The block diagram and following circuit descrip tion will provide you with a better understanding of the design of this transceiver The circuit description is tailored to the full feature FT 101ZD and the reader should note that the counter unit and digital display are optional features for the FT 101Z The FT 101ZD consists of a premix type single conversion system using a 9 MHz IF for all modes of operation RECEIVER The RF input signal from the antenna is fed through antenna relay RL lamp fuse attenuator switch 520 located on the LEVER SW unit 1975 9 MHz trap and Ciao located on the TRIMMER A UNIT and
13. 104 100 82 cXA24 ISS 422252 AZLE 252 IV SdW 810 410 600 010 116 100 6 0504 10508 pees 607 ore 20 XS 66H BOSON AWO99 ACLEISS 220 roy 95 52 e 020 4 OOSOM 10X 3 0508 46 682 300 109 10 O 162 1900 PrI 1700 455 dOl 242 00 9939 Loo aL lt 222 8 SIU 00 02 1X ISH 66615 100 D D A Zl XL JANO Cam 180 3 San YILIN E A 4 246252 INI 27708 YOGINS NO 2 6 2200 330 208d 8 vosd 2 D zor J a M lt lt 1700 55915 103 viu 412 525 8 X I TAJ 200162 199 IOO 400151 2041 400 SI IO3x 04 1500 202 a a 3 54 SERVICING IF UNIT VOLTAGE CHARTS DC VOLTAGES a o gt ex N 4 Qaos IC PO 2 1V METER ALC NB OFF 0V ON AGC OFF 3 6V MAX RF G
14. 32 REPAIR PARS 642 646 6626 6623 _____ 2175820 __ 8SpF j 7 _____ 217510 N4090006 2179023 __ TP C601 602 K13170103 z 604 606 BENE ___________________ 608 610 2202222 MNICONNECTOR 612 614 616 618 620 622 624 625 er 627 629 _ 631 633 ae ee ey 635 647 VFO UNIT 639 641 643 645 0014400 VFOasembly 3420 647 649 PCBwihcompoents PB 1440B F0001440B P C Board X604 H0102294A 24 4875 MHz MEET a RE X601 HO101470 18 0 15 9875 MHz ET TRANSISTOR 0101490 E 0101500 28 4875 MHz Ho102295A xs OoOO O Tooo o Varactor 182236 x609 ____ 520 __42 9875 MHz ees 43 4875 MHz 0 1 12127 R809 100245101 pO 100245221 ____ _6_ R805 808 100245222 6 oasa CE 1100245103 _____ _______________ pewis 18k R806 1
15. is e m ps 7 7 7 7 C i RR ewe 7 38 jom emen amo 0034525 7 7 7 7 229 9205 06 G3315830 t 3 REPAIR PARTS T wot 14 mn ena ee ee 0 3 RENE 2 oo ooo p wwcogra ________ ____ mResro 2o 7 1 0090037 1504804 O R208 216 224 100245101 Carbon film 1 4W VJ 1000 kc c n p nd cast cos uw EL hune 77 7 2 honosims menssr 7 T j R206 215 221 700245102 Hui 7 gt 3 0021520 PREMIX unit with componens 0205209218 300245562 v __ _____ CE R202 203 212 pasio UU U U 214 225 226 _____________ TRANSISTOR _____ 22 R27 ____ _ o 68kn ____ _ _ __________ T j Jj Dp 9 1898 SF konn o cms 7 7 e LLL 208 209 K02175150 Ceramic SOWY NPO lp RESSTOR ________ R331 3013503305 1004801 7 gt 7 08 202 203 205 K13170103 Ceramic 307 309 311 211212221 313 315 332 295 227 333 229 233 C207 210 213 K13170473 0 047 uF 2200 215 219 220 328 336 223 224 228 237 Electrolytic LuF 10WV 4 7
16. adjust TC2402 for a reading of 50 mV while transmitting TRANSMIT RF IF TRANSFORMER ALIGNMENT 1 2 3 Connect a dummy load to the antenna Jack and connect an audio signal generator to the microphone input Tune up the transmitter at 14 2 MHz and adjust the audio generator output for approximately 50 watts output into the dummy load single tone SSB mode Peak RF UNIT for maximum power output Peak Tao Yao and Taos IF UNIT for maximum power output Switch the RF processor on and adjust the COMP LEVEL control for approximately 50 watts output Peak for maximum power output RECEIVER RF IF NB TRANSFORMER ALIGNMENT 1 2 Po X201 405 7404 Tune the marker generator signal at 14 2 MHz with a dummy load connected to the antenna jack Peak the preselector for maxi mum S meter indication Peak RF UNIT for maximum S meter indication T2401 Jogos 2402 TP 2401 402 J AM UNIT PB 2040 edad Peak T406 and T413 15 for maximum S meter indication 3 Connect the RF probe of a to the collector of NB FIX UNIT Reduce the RF GAIN control somewhat and tune and for a dip in the VTVM indication If no dip is observed reduce the RF GAIN control further 4 J102
17. w 8 LINN XIJ Z ON 961 84 531v amp gt 5 4 5 O O mE SSAC3 i H UNES lols m Jue un 3 5 38 lt 2 g el 06 oe Y ag 052 ACOE 6 e EI i s es aa lea Cone dii ad esa 9 95 186 05 I 0 7 BA apa funy t 2 t 3 o 540603 Qm it t 4 d Loo P POO 4095 toT 2908 AM tou od 4 2 1 4D Q D i 7019 Olz Lat log O 8 96 gt 6000 000 C00 gor O O O O O O O O O OQ O QO H O OO i O15 22 4 so O or n aera 3 H3WWIM L j somon CE mss FON LINN Vd 2 Z 919 2601 8 lt 4 LINN H3AIHQ vv lid o wn SPON t12 Gd on LINN je a we fel b bm eer I2 ad 0090000 _ S 9 vins ETT 300 vid d 912 810 SOC 85 sor 2 la Ni 2 E76 L i 20 WY
18. 2 7 CIRCUIT DESCRIPTION 2 8 SECTION 3 SERVICING OUTER COVER 3 1 FRONT PANEL REMOVAL 3 2 CIRCUIT BOARD 3 3 PILOT LIGHT REPLACEMENT 3 4 CW FILTER 3 5 COUNTER UNIT INSTALLATION ON 1017 3 6 AUX BAND INSTALLATION 3 7 DC DC CONVERTER INSTALLATION 3 10 COOLING FAN 3 11 SOLDERING AND DESOLDERING TECHNIQUE 3 12 CIRCUIT TRACE REPAIR 3 14 MODIFICATIONS REVERSAL FV 901DM DIAL SENSE 3 16 RECTIFIER B UNIT MODIFICATION 3 18 LOW PASS FILTER ADDITION eae 3 20 VOX CIRCUIT MODIFICATION 3 21 COUNTER CIRCUIT 8 3 22 VFO DRIFT WHEN ADJUSTING DIMMER
19. LOCAL UNIT Switching diode for that band defective check Deo1 De10 Defective output coil for that band check Te10 Defective oscillator transistor for that band check 10 Defective crystal for that band check Xe10 Defective resistor or capacitor in oscillator circuit for that band No oscillation on particular band Defective Q301 Q303 Check for 12 V at pin 9 of PREMIX UNIT Check for local input at pin 7 Defective R300 L3ia gt 1315 Defective Q3 Defective R22 Cs3 a Output not correct on all bands nom output of 100 mV is OK 3 PREMIX UNIT x Defective BAND switch 51 Defective diodes D2 Ds Defective bandpass filter output diode for that band check D301 D314 Defective bandpass filter coil for that band check 1 14 Defective RF choke for that band check L301 L314 Output not correct on a particular band 3 45 SERVICING a WIDTH LED does Defective LED 501 or 1501 51501 not work 4 Indicators b CLARIFIER LED Defective LED D1802 1801 91802 1804 does not work c PROCESSOR LED Defective LED Do or Riz 52005 does not work CH does not Defective LED D1905 D1906 or S701 f work 1902 TX
20. HUMAN 2 2 sS 200575 NONENNC gt Hir dC ________ 10020209 ne ________ op Fria EEE EATERS NE ss As SE TN TCA TE 2 2 U ros pF evi Marts NB FIX UNIT Parts No Description a et m 100 2 0019610 NB FIX unit with components F0001961B P C Board ee puc lt R126 127 100245100 8 _ R110 J00245820 106 108 100245101 116 120 121 130 100245479 Carbon film 1 4W VJ 4 79 100245221 100245331 R111 113 114 i 330 128 129 TRANSISTOR J00245471 J00245821 ZI 12 100245102 DINE R117 100245152 122 6002452 1 100245562 DIODE 0024822 7 7 7 7 6201204 6209009 Ge _ 700245223 _ _ __ _ zka 05 29 62015550 Si 1858 o 8 mon E J00245393 J00245563 J00245124 J10246225 R125 R101 Carbon composition 1 2W GK 2 2 MQ 2
21. RF UNIT PB 1960 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk ALIGNMENT OF TRANSMITTER MIXER DRIVER AND RECEIVER FRONT END STAGES CAUTION Be certain not to exceed the recommended 10 seconds of key down time while performing the alignment of the transmitter mixer and driver stages as described below Always dip the PLATE control to establish resonance before proceeding with any adjustments Off resonance operation will shorten tube life dramatically 1 Connect a dummy load wattmeter to the rear panel ANT jack 3 33 SERVICING 2 Set the MODE switch to TUNE the BAND switch to 40 the VFO dial to 000 the PRESELECTOR control to 6 on the scale of 1 10 and the DRIVE control fully clock wise Connect a dummy load wattmeter to the antenna jack and set the neutralization trimmer TC to the position shown in Figure 2 Close the PTT switch and dip the PLATE control for a minimum IC reading on the transceiver meter the LOAD control should be set to the nominal setting shown in the operation section of this manual Now adjust 140 for maximum power output into the wattmeter Set the BAND switch to 100 the PRESELECTOR control to 10 on the scale of 1 10 and reduce the setting of the DRIVE CONTROL Preset TCi206 to the position and to the 1 3 posi
22. 220 ___ 1132276010 Wire wound IW 1N60 __ _____ MEME 507 509 G2015550 Si 151555 j 512 517 CR 19R 100 2B 519 522 __6_ 6 ______ 1501 518 __ 2090001 T o S C x X30U6511 Dippea mia SOF CHS 0166260 7 7 vr WCISU C KO2UISSS 7 CH 5 31 REPAIR PARTS 0090037 5048 08 P0090042 5048 05A P0090041 5048 03A r Sarvice Mamaa onte 1503 1504 50WV CH 100 510 532 534 2175101 555 566 C533 K02175151 C558 559 K00179020 C512 K06175271 C504 519 521 K13170103 ii 0 01 uF 523 531 535 542 545 570 509 537 574 13170473 1505 0042800 cms ksormoz Wya SOW 0 001 uF Ge C518 529 530 emma 572 PREMIX LOCAL UNIT OIF PartNo Dewnpion _______ 528 556 569 50177473 0 047uF C0021530 PREMIX LOCAL unit with 573 21 konnal gt ____ PB2153A F0002153A P C Board C507 517 527 K40170105 Electrolytic BN MANN 550 551 560 RENS e 567 568
23. doe 9021 dor cool dos soal 328 vonl dos poo O loo Dew p dOC6 02 t wa mea ee eee R N 59 1024 am ame ee ee LINN STON Hi 21 8 ae LINN H3AVEOHL r 9N8 0261 8d dt 915 div 85 9ZON LINn WY 8 er W NY 1 2 Provided http www yaesu museum com FETI HT 6FoN Vrzer 8d 1 oora 1 HF Nux Cr qi _ L Nr x 7 5 6 7 NaN AY A ARS En eS FN i RATS z 7 LINN CSlON VEZGI Bd O _ 9 O QON MOO OE gm 9 9 99 9 9 CLL ms Sm 2 air m 5 9 puce n set ozo pe IT E m Tess TTT TTT LA A gt 5 9 B E z Amateur Radio Directory
24. gt 502 ks 02511 2501 2 02513 02512 02501 2511 EE V 2501 T2sos i CRETE X2502 Qisia T2502 J2506 2514 2515 2503 2502 42505 2501 T2504 X2501 Q2so4 02 506 02517 12505 2505 CDzs01 2 509 2502 P2501 Q25oe Q250s 02507 2503 at Deviation Adjustment Connect a deviation meter to the antenna jack and connect an audio signal generator to the micro phone input terminal as shown in Figure 17 Set the MIC GAIN control fully clockwise and set VR2502 at the 9 o clock position Apply a 1 kHz 15 mV signal to the microphone terminal and adjust for a deviation of 4 5 kHz as shown on the deviation meter Set the MIC GAIN control at the 2 o clock tion and reduce the output of the signal generator to 2 mV Now adjust VR2so2 for a deviation of 3 5 kHz on the deviation meter Directional Coupler Deviation Meter Dummy Load Q Oscillo scope Audio Oscillator Figure 17 VR2502 at the 9 o clock position OPTIONAL INSTALLATIONS FT 101ZD DC DC CONVERTER INSTALLATION The optional DC DC converter can be installed in a matter of minutes Please follow the instructions carefully in order to make the proper connections INSTALLATION 1 3 4 5 NUT M3 Remove the seal covering the chassis cutout for the DC DC
25. IMS LSI COUNTER UNIT P8 2086A NO 250 U J DISPLAY COUNTER UNIT 5 14 PIT IP To connect Q2305 Q 2321 a qe w T COUNTER UNIT 2086A 5 15 CONVERTER OPTION t ee ou BIAS SET E T 054 ae aa a a a a aa a e e sea a e e s e a we u CAPACITOR BO PB 1969 2005902665556 FSCS ESE ROL 2798 4 106646 49 G amp y S Osesesesse RECT B BOARD gam ME nn 28 1968 one 3 SReseeese ste t 10682 oto 2 TC 9295995295 vere eee T TTS Tews 24 9 5 99 A MIS PB 1961 in dii ng NC a DRIVE BOARD Orr ra pul Sb NY AB AMA MEL Ll EL PB 1714 IF UNIT 1963 RF UNIT COUNTER UNIT PB 2154 PB 2086A pe IGE ALN i S380 PREMIX LOCAL UNIT PB 20 EE I 2153 FM UNIT BSR gt PB 2218 SERT VFO UNIT _ k PREMIX UNIT PB 1440B 3420 PB 2152 PB 2098 For Service Manuals Contact MAURITRON TECHNICAL SERVICES TOP VIEW 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01844 352554 Email enquiries mauritron co uk
26. LLL SERVICING AF UNIT VOLTAGE CHARTS gt DC VOLTAGES Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor MARK SPACE ON UP 7 CW KEY DOWN 7 CW b 92 2 lt N ES gt lt m gt Z i gt st gt opm a 2 gt Te N c A O o t lt 4 eo ret lt lt td D mele gt gt 0 2 cO lt Nl op t QO m i s z 2 in in Y nj x ele QUIC lt 0 ON OFF OV 507 508 509 9511 0512 3 59 SERVICING AF UNIT PARTS LAYOUT 1 SOURCE DRAIN GATE 2S
27. S82 m mw sss MEE ne mss E C 3658204 eee SA MEUS TC NEAN SE SSN S ES j po qs o po s _ j Sr Nono __ Q0000005 s so 0000008 3AQUV 2MY __ saon stos 0 sas __ oo m Fo rn 200003 C p LLL LLL Fa LLL VEI E pmoraw MEM 600 B0041 22803A 01000033 0252 68 8054327328 n OO _ 5 mew 4 950000 Thru terminal Is P1090075 5047 08 with wire 79303200 04000002 ie Fi ssi 0600042 Terminal block ML3iB2 20 5 Roo 9600007 7 STROLH Q600016 7 iLSPS 6 00 nowno 343 960000 7 IL2PS LO D 1600000 IU oso 00 7 IL4P 003 26 Ce REPAIR PARS ws Tasa a 05 m Goa 608 K02179003 Ceramice sOWVCH 29 SE 77 ons CE qeesse 7 Sp 777 a 353 LED B BOARD v v 7 7 7 390p _ 2
28. iin 2 5 jos KINO Wa ted 96 52 18 2 22 24 71 gir avs 2c 5 BiMcZ 2 MS H3 2 INY 028 95 biH 666685 10001 I8u9S WvHOVIO 1112412 07101 13 20 59900 2435 v2ABZI 5718 B9v 9 S 710 1234 Oi 1 ON BSI I 8 d 2 AQO II rl F wan EZ vsi 95 BERN t 09S OO SOM 200 x 00 wh l 2 9N LIAN N31U3ANOOD 20 20 20900 001 vid eee dS 121 dS 612 r 4621 Bob UE ea finn 197135 2409996941 7 2 1 uu qu ee One am ogm aot ELLA ou pu Derr D O pt 4 D E TEMS B B o Q O OQ O 4 A9 OJA vir k Er a RI I 221106 62 C18 x 5 i 5 jo lt lt 1X3 E
29. isl 45 aJ 8 005 R22 27 The IF signal is then passed through the SSB filter XF or optional CW filter XF4o2 Selection of the filter to be used is made by diodes Daos Daos 151007 depending on the mode of operation The IF signal is then fed to the IF first mixer 3SK51 03 where the incoming signal is heterodyned with a 19 7475 MHz 41 local signal delivered from crystal oscillator Q421 2SC535A and buffer amplifier Q423 2SC372Y resulting in signal of 10 76 MHz Af The new 10 76 MHz Af signal is fed through filter to the IF second mixer Q413 Q414 25 K19GR where the filtered signal is heterodyned with the 19 7475 MHz Af signal delivered from 2SC372Y resulting in 8 9875 MHz IF signal the same as the original IF This process varies the IF signal across the passband of the second IF filter The combination of the two filters and XF4o provides continuous ly variable width of the IF passband The fre quency of crystal oscillator is varied by varactor diode D4 4 182209 The output from the IF second mixer is fed to a two stage IF amplifier consisting of and Q416 3SK51 03 and delivered through diode switch Dao 181555 to the AF UNIT A portion of the output from Q416 is rectified by and 1N60 to produce AGC voltage 28C372Y provid
30. o a PB 1979 F0001979 Board on E as rea BENE Resistor ________ 101245102 Carbon film 1 4 TJ 1 _ 208 2213 51090046 3090038 gt mM 0 ON IC TRANSISTOR NO NO gt T eeecne G109003_ sa _ s TT SAM 72 272 MN ss sisip ms SSES LEVER SWITCH BOARD EE D S 5 0019750 LEVER SW board with components 2204 2245 100245101 Carbon film 1 4W VJ 1000 ee 100245271 Logo 00245471 22 R2006 101245560 Carbon film 1 4W TJ 560 248011070900 1000 CAPACITOR 10124512 ea _ cC2201 K13179001 Ceramic SOWV 0 01 uF J01245391 C2202 2204 K71137685 Tantalum 6 3WV 6 8 uF d o lt VA 3 gt z 3 bo gt T Au t2 c eio mT Cn E TAS ET JUNG 2 222 5 aa INE MENEMINMNE es sss A r 98000007 163740 ________ s AS SAIL SIGS ieee AK aA m O O Oe COUNTER MAN T isa eooo ee _____________ muswse ST Se AAA S COUNTER UNIT E a COUNTER
31. on the IF unit Refer to Figures 13 and 14 and install the AM unit atop the IF unit using the mount ing towers and screws supplied Unplug P21 from 19 as shown in Figure 16 and reconnect P21 to 2401 Connect P2401 from the AM unit to Q 5 Locate the 3 pin and 8 Molex connectors ir the vicinity of the IF unit Loosen their cables as necessary from the hamess re straints in order to make the following con nections 8 connector P20 connects to 2403 the 3 pin connects to 12402 RCA plug P22 from P20 connects to on the RF unit remove from Jio2 and very carefully insert it into 72404 on the AM unit a After Prod 17 RF UNIT NB F1X UNIT P22 RED COAX 7 IF 963 02 RED COAX GRAY COA Rar oax P20 28 2154 j gt a J2403 E AM UNIT PB 2040 G 19 2402 GRAY SHIELD GRAY COAX Figure 16 SSS dams ee quuni MIC EMP AF os C BUFF BUFF Tx 0251 02412 025 3 02514 02515 22516 m Y 2569450 2 x 2569450 1 25 9450 25 9450 3541 05 C 8988 3 Do Rw IF AMP Mix FILTER AMP FILTER 3 T 02501 2503 CF 2501 Q2504 02505 2502 IN Y 25 125 2525358 455 2509450 2509450 15 ose 02502 2529450 01556 1M AMP J aa
32. 13 2 T or coor gt LEwass SF045554 203 lt TTETT x si QO m gs 2 x BE eu S X x x 2 ST 59 333 lt w s lt I 9 mH 25 i ES QO rei re h a 902 Ssar 22 THE 2sc sso 34 RPM 204 MS dat 3 efi 42 FM UNIT P8 2218 No 25 APF UNIT PB 2217 The APF UNIT is placed in the audio circuit by the APF NOTCH switch on the front panel For APF operation a selective active filter is formed by 1502 and the output is delivered to the AF UNIT through the AF GAIN control The sections of 1502 5 also used for the high Qnotch filter APF VR provides for adjustment of the center frequency of the audio peak and notch filter A portion of the audio signal at AF GAIN control is amplified by 1501 28C1815Y to provide a fixed level audio signal to the AF OUT jack on the rear panel For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor 01 844 351694 Fax 01844 352554 Email enquiries mauritron co uk QO2 b coe 7 8 2 pi 9 WT 1 2217 15 APF UNIT RF UNIT PB 2154 The IF signal from 1102 is delivered to the Schottky barrier diode module Qioz ND487C2 3R where the IF signal is mixed with a local
33. o 1 HP aa 20 6l ON Vyz6r 83 ir 108 6198 liane das l IW 8 5955 Qu Linn avs CGl ON V 261 Bd Ao NN A lid er LIN GN 2 ON 1961 84 2 k d rfr 8 11111221 7 EET 0552452 HHHH EI e A L e s ELI QATIIY E 1 5 2 EL I 5 a1 ZABZHS71E8 H9blS S VIB O 300 19 d 912 BID EEL HLGIM 2261 8 AOSI Q O 06 n ll Y i eat HH Er qR aaee gt n 8 4934 29 ooo l Ew ues 4 ro O E O m 5 Y 5 I 3 2 Oh zor I l lo D 9 o lols uoi 5 Cus X 4 DOU O8 2 61 90000 Qo LC 659690590900905090996 J LINN LIT ONLIN 260 LINN 0 BS1 I 8d 9roN el2i Bd 994 Ce
34. 2 xavw 2 1 22 100 63 32v XZVv TS Eee tee 4 9 gt S ON LINN 961 s gt 9 gt S vno 5 Jo 944 65 So 25 181252 2 q gt 600 881252 s 9 6 2 gt gm m ra i E gt aX ZK oXsYveXeX2X U lt gt 9 4015 10 5 s S SN v dOO 012 11 2831 2 J 6 2093 900 d MAEN om Ivo 3NOL 9 21 9 k8 3 58 ecu 622 400151 900 Ole 214 a SI2 YSI 4 428 1 422 ZHAL AZ YOOOOIDSZ 2 5 400 5 IOO 919 9 gt i T8 AWOLE A8 XH 2 8 oe ey ee ee 490001252 2 oi s w 800 TA z2 _ 41888 Ig 9158815 2 Fo x1 8 8 8 5 lt 5 AR 59 v X 200151 3 of 2nd ge 560 000 3 3 ES TS i TS 5 9151 55 QI Ls 600 J 10 O 959151 65615 O 3 a v9SVS2 246181252 ino 3 nie e 910 o 07 L ee a
35. 9812 Princeton Glendale Rd Cincinnati OH 45246 ORDER BLANK CIRCUIT QUANTITY DESIGNATION authorize shipment Best Way Parcel Post 1 UPS D Other Ship To Name Print or Type Address City State Zip REPAIR PARTS For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk REPAIR PARTS YAESU MUSEN COMPANY LTD C P 0 BOX 1500 TOKYO JAPAN YAESU ELECTRONICS CORPORATION P O Box 498 Paramount CA 90723 YAESU ELECTRONICS CORPORATION 9812 Princeton Glendale Rd Cincinnati OH 45246 ORDER BLANK TRANSCEIVER QUANTITY IDENTIFICATION I authorize shipment Best Way 1 Parcel Post UPS Other Ship To Name Print or Type Address City State Zip Country eT ee ee eee a D A YAESU MUSEN COMPANY LTD BOX 1500 TOKYO JAPAN YAESU ELECTRONICS CORPORATION P O Box 498 Paramount CA 90723 YAESU ELECTRONICS CORPORATION 9812 Princeton Glendale Rd Cincinnati OH 45246 CIRCUIT PART NUMBER DESIGNATION ORDER BLANK LOCATION I authorize shipment via Best Way Parcel Post UPS Other Ship To Name Print or Type Address City State Zip Country 4 3 REPAIR PARTS 4 4 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Chinno
36. COS L 344 4 m oo o lt gt 5 5588583 89909 DC VOLTAGES as Quos 2 5 1 0 LEE Provided by http www yaesu museum com Downloaded by Amateur Radio Directory 3 62 SERVICING PREMIX LOCAL UNIT PARTS LAYOUT Viewed from solder side Viewed from component side COLLECTOR EMITTER For 5 or Service Manuals Contact MAURITRON TECHNICAL SERVICES oye 8 Cherry Tree Rd Chinnor xon O Y Tel 01 844 351 694 Fax 01844 352554 Email enquiries mauritron co uk 2SC372Y 3 63 SERVICING VFO ASSEMBLY VFO BOARD PB 1440B 3420 00 25 372 CI 4 IBOP C20 LO4 LOS Q Of E e 003 IOOK C23 470P 13 26 372 DC VOLTAGES 8 B G CAM Viewed from component side Viewed from solder side SOURCE COLLECTOR pm EMITTER GATE BASE 2SK19GR 25 372 3 64 SERVICING VFO ASSEMBLY PARTS LAYOUT VFO UNIT EXPLODED VIEW For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Y 01844 351694 Fax 01844 352554 TUN enquiries mauritron co uk 5300275 VFO BOARD BRACKET 80040820 VFO CASE R0040810 LAMP GEAR N3 d 800511604 m V LAMP HOLDER
37. SERVICING Fan plug ere aces SERVICING SOLDERING AND DESOLDERING TECHNIQUE ON PRINTED CIRCUIT BOARDS The FT 101Z circuit boards are tough but mis handling during soldering can cause circuit traces to While this does not cause permanent damage to the board much servicing trouble can result because of the tendency for this lifted trace to break A few simple precautions will keep your circuit boards condition l Use only 12 to 30 watt chisel tip soldering iron Yes some repairmen have been known to use small blowtorches on cards 2 Use only a soldering iron equipped with a three wire cord with the tip grounded Also acceptable is a soldering iron isolated through a transformer An old soldering iron or gun may have 117 volts on the tip and will certainly cause more damage than it repairs 3 USE ONLY 60 40 ROSIN CORE SOLDER Acid core solder should be thrown away if you find it in your radio shop 4 Use a solder sucker and solder tape to ensure a professional repair job S If you do lift a trace don t worry Read to find out how to repair traces like a pro NOTES ON USE OF CMOS IC s As CMOS devices are extremely sensitive to damage from static electricity special precautions must be observed In storage use only sponge specially designed for CMOS components When installing a CMOS IC in a socket or on a circuit board be certain that the power is
38. enquiries mauritron co uk OFF Position 055208 OFF Position 10040 008 P N 66000005 SERVICING CW FILTER INSTALLATION OPTION 1 Remove the top cover of the transceiver case 4 Install the optional CW filter as shown in the as shown in Fig 1 foil side view of the IF unit Fig 3 Make the fastening nuts snug and solder the pins of the 2 Refer to Fig 2 and locate the NB FIX circuit filter to the circuit board and remove the 2 board Remove its mounting screws because jumper wires shown in Figure 3 this board is obstructing the removal of the IF unit 5 Re install the IF unit being careful to connect the 12 pin 13 pin and 15 pin plugs in the 3 Remove the 12 pin 13 pin and 15 pin plugs correct sockets Refer to Fig 3 to be sure from their sockets on the IF unit Remove the Re install the NB FIX unit and replace the IF unit mounting screws and remove the IF top cover of the transceiver unit from the transceiver case 6 When the optional CW filter is installed the CW N position of the mode switch will activate this filter In the CW W position the SSB 2 4 kHz filter will be in use The WIDTH control is usable in all modes 8530060 7G X8 1 r Service Manuals Contact VIA TRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01844 352554 Email enquiries mauritron c0 uk Figure Figure 2 CW FILTER Lock Washer S pri
39. 11 Now you are ready to align the other bands Set the BAND switch to 15 the VFO dial to 000 and the PRESELECTOR control to 8 5 on the scale of 1 10 Set the LOAD control to the proper position Close the PTT switch and dip the PLATE control for minimum indication on the transceiver meter Now adjust TCiaos and TCisos for maximum power output into the wattmeter On receive tune to the marker signal at 21 000 MHz and TC12osfor maximum S meter deflection on the marker signal 12 Set the BAND switch to 20 the VFO dial to 000 and the PRESELECTOR control to 8 on the scale of 1 10 Set the LOAD control to the proper position Close the PTT switch and dip the PLATE control for minimum IC indication on the transceiver meter Now adjust TCi4a04 and TCi304 for maximum power output into the wattmeter On receive tune to the marker signal at 14 000 MHz and adjust 204 for maximum S meter deflection on the marker signal 13 Set the BAND switch to 40 the VFO dia to 000 and the PRESELECTOR control to 6 on the scale of 1 10 Set the LOAD control to the correct position Close the PTT switch and dip the PLATE control for minimum IC 5 5 amp gt O O Q Q E 1301 301 160m S 2 80 TCis0al 20m 15 x TCisos 10m 40 t _
40. 5 z Amateur Radio Directory TECHNICAL NOTES 100080 1295 lG M9018 1X3 02101 13 100 4 100 29v S A SVISANW 1238 71 13X 1081 00 93H 8 LIWSNVYL J 3 13234 L 4 prT T AOO dWV1 YILIN INhxi3 g ON MS 655151 A24 2S2 602 1020 020 _ am 250 XIW 250 D OIX2Z4 2S2 bISSLNS 246252 T 019 1090 COCO 6489 201 LINN S28e 2e voi 1720241 XIW35 628566 GI NUNG Szabez Minn avidsia amp 294 280 61912 Ob 4 o finn 2 2 2 2 P ZHAG 968 12 713 855 ZHAP C Ot3 3X p 330 um um we sadasi 330 304d 9 n A m e aoa s gt 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01844 352554 Email enquiries mauritron co uk For Service Manuals Contact MAURITRON TECHNICAL SERVICES 29 AJA S 714 855 LINN dl e ae m m Q 3308 160 MS 96952 5150 LAN 2060
41. ROS 100 505 PRO RO4 68K ANT RF GAN FAST ALC MARKER ROI 120 S02 So METER NB MAR amp e O O O C O RO2 Bi 390 amp LEVER SW UNIT 2 1975 20 COIL AGC SLOW RL PO NB LINE Viewed from component side GATE NO 2 DRAIN GATE NO SOURCE SUBSTRATE ANO CASE 3SK40M 35 51 03 PIN 7 7 65 43 2 HP ASAH COLLECTOR Y BOTTOM SURFACE MPS3640 2544960 14305 PINS PIN 9 PIN 14 PIN 16 PIN PIN 8 5 74500 NOTCH SN74LSO4N iin SN74196N MSM561 MC 10116 SN74LS196N 5 5564 3 74 2 5 W q 4 gt ee ee lt lt 77 QHVO8 1 0N O861 8d H Swd 800 100 59615 210 100 1000 2225642 SERVICING OH XO 508 00 209 02 rt Swi vos lt gt Od AS it J 029 85 13633 Gir NND 5 4 lul e m cmm mm momo MMi gt s gt IOO SOR I9GWSW 600 38 300230 LNNOD 626 8 AV 19510 u 12 0 8 161 Oxon OX9 4Q
42. 14 TONE This control varies the CW sidetone output level 15 A TRIP This control varies the level of the VOX anti trip circuit 16 PTT External control of the transceiver PTT push to talk system may be made at this jack for use with a footswitch etc 17 PATCH Microphone or phone patch input may be made at this jack Impedance is 500 ohms 18 EXT SP This is a miniature phone jack for speaker output When a plug is inserted into this jack the trans ceiver internal speaker will be cut off Impedance 15 4 16 ohms 19 DC DC CONVERTER OPTION The optional DC DC converter allows operation from a 13 5 volt DC power source 20 COOLING FAN OPTION The optional cooling fan keeps the tubes at a safe operating temperature when they are used in a hot environment The 2 pin fan power jack supplies 100 volts to the fan For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 01844 352554 Email enquiries mauritron co uk ACCESSORIES The following accessories are included with your new transceiver 1 AC POWER CORD 1 The power cord comes equipped with a 6 prong connector for connection to the AC supply 2 ACC PLUG 1 accessory plug allows access to relay contacts and transceiver operating voltages The ACC plug must be inserted in the accessory socket for proper operation of the transceiver whether or not ex ter
43. PIN No VFO OUT pg FV 9010M NC FV 1010M 2 GND 3 EXT 6V IN 4 AGC IN FV 901DM 5 TX 12V IN 6 GND inu 9010 RX EXT 1010 EXT VFO B EXT VFO PLUG 1019 EXTERNAL VFO PLUG x IN 17 1 ONNECTIONS ACCESSORIES The following accessories are included with your new transceiver 1 AC POWER CORD 1 The power cord comes equipped with a 6 prong connector for connection to the AC supply 2 ACC PLUG 1 pc The accessory plug allows access to relay contacts and ALC voltage The ACC plug must be inserted in the accessory socket for proper operation of the transceiver whether or not external connections are being made 3 PHONO PLUG 2 pcs Use these plugs for interface with station equip ment via the FT 101ZD rear panel 4 SPARE FUSES 5A 3A 1 pe each When replacing fuses be absolutely certain to use a fuse of the proper rating OUR WARRANTY DOES NOT COVER DAMAGE CAUSED BY IMPROPER FUSE REPLACEMENT For 100 117 volt AC operation use a 5 amp fuse For 200 234 volt operation use a 3 amp fuse Py D C DM UR eae AM UNIT 02402 2SCIBISY MIC AMP rt i i I E eee ee lt a aM ee gt gt gt 2SCIBISY BUFF 151007 2SKI9GR osc USB 8989kHz CW RX T 58 8986kHz TX 8988 3kHz 0
44. gt 5 5 z Amateur Radio Directory TECHNICAL NOTES vert ERES 20 8 eser 02101 13 x 1X3 1102 10 29v 7 10 1 02 X3 152 93H AS l1IWSNVHI 4 10010 3 1323 mj L J wor qu ui dec 1 AOIZ ACOE H313W LINN 8 ES MS 130 29 3300 25v 29v 250 21 25 602 4020 6 9050 6050 T THMOO XIW 250 Xid a 9487 6 212 252 gt 159 5 226252 62 867 lt 00 T 019 1090 OCO G428b 30 j 6186 29 80 L W901 G48vb Zv VOI s c S JAYO 78 252 cee Fin Asso 20 292 2805 628912 OF EN 10224 p M Q GAB EE OS 4 H31NnOO ZHWS486 SI 091 Mo lt lt lt lt lt zMgz868 3 Fe ee 1v201 LE9S2 coto 429tN2Z zu4c eseg XL LOIO T 552121 2 1446868 8sn ec 901 SOID MS YL SISO 330 330 iva 340 2088 _a am o_o ee XL MO Provided by http www yaesu museum com i dS gt 5
45. x esem 7 O 02175101 16 ____100 FETE TRANSISTOR C2301 2304 K13170102 Ceramic SOWV CH 0 001 uF 02312 61090249 MSM9520RS C2302 2305 K13170103 m M 0 01 uF 2308 2305 2311 2312 2314 2315 2317 2319 Q2306 2311 G3109520L 25 9521 2321 2326 50 BEEN 2301 2313 Si 151555 O O O or service Manuals Conta 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk ni Ww REPAIR PARTS TRIMMER C BOARD m Symbol PartNo Description 501 K13170103 Ceramic SOWV 0 01 uF 1 0010920 TRIMMER unit with components DB201YF 103251 5 1092 1001092 _________ 1505 1506 50177153 Mylar 50WV 0 015 uF mum _________ 50 20153 x 1503 1504 40179001 Electrolytic 50WV 1508 1509 SORC2 1 51 C1502 1507 40129004 Electrolytic 16WV 10 uF SEGI 16 10 TT 9269 7 _ C J cim Korin O mE Ci40 ozmos 7 200p Sr 409008 1B0001AC2000 MEME se ee ee AGGERE ee ee 7 U 7 7 7 TC1402 1403 K91000032 B2PY PRP DRIVER BOARD PartNo Description a
46. Board J00245331 AL 2 m5391 1 1399 100245471 100245561 FET TRANSISTOR 100245681 1963 0001963 ICO 7060 R0515 100245821 G1090063 G3800190B Q403 Q406 100245102 FET 2SK19BL R406 4 16 428 0402 413 414 G3800190G 2SK19GR 437 440 442 419 425 449 453 457 0401 405 412 G4800510C 35 51 03 459 462 488 415 416 494 0504 G3050015 0506 0407 420 63105641 TEIE 253727 101245152 R454 455 458 100245222 0510 G3305350A 2SC535A 100245272 G3090005 5 13 R401 409 412 700245332 2250 413 417 431 456 496 0511 R426 427 100245472 R403 445 481 100245562 5 6 ko Q404 409 410 G3303720Y 417 418 422 424 0421 0411 Ge 1N60 489 R404 407 420 J00245103 i i 10 kQ 62090029 G2010070 D416 417 D405 408 414 421 D401 404 G2015550 Si 151555 421 424 436 409 413 471 477 484 419 485 491 492 G2022090 Varactor 182209 0501 0509 FC63 0512 Zener WZ090 R433 101245103 c 10 kQ R470 476 J00245123 NJ 12kQ G2090040 G2090010 D422 D420 423 CRYSTAL R414 100245273 HC 18 U 19 7475 MHz R46 1 472 478 100245473 0500 R405 465 466 J00245104 100kQ R493 00245154 CRYSTAL FILTER R448 452 487 J00245184 180kQ XF8 9HS 0503 0505 XF8 9HC 100245334 R415 438 498 100245153 15 499 H01
47. C2551 2553 06175101 Ceramic SOWVUJ 100 2577 2581 2554 DD106UJ101750V02 2583 2586 C2550 K06175121 Ceramic 50WV UJ 120 R2539 2576 101245102 T 1 m ECC D1H121UJ2 2578 C2507 2508 02175151 Ceramic 50WV UJ 150 pF MM 1 5 DD109CH151350V02 K C2503 2537 13170102 Ceramic R2534 2540 R2542 100245182 R2516 2517 100245222 n 2 2 2552 2564 DB201YF102Z5L2 2566 C2501 2505 13170103 Ceramic 50WV DB201ZF103Z5L5 2519 2521 0 01 uF 2522 2524 2532 R2550 2579 R2530 2541 2544 R2580 R2514 1582 2555 2557 2560 2563 2569 2571 2572 2573 3 9 C2502 2512 170473 Ceramic SOWV 0 047 ii 4 7 2558 2574 DB207YF473Z5L5 d 2 7 F 1 3 3 700245272 100245332 100245392 100245472 REPAIR PARTS C2548 K19149021 Ceramic 25WV 0 047 F 08 473 1 46 2515 2530 19149025 25WV 0 1 F UAT13X104K L46AE K51176101 Styrol 100 pF 5050101 C2513 2514 50177102 Mylar 50WV 0 001 uF 2517 25 22 50F2U 102M ME K50177152 Mylar 50 WV 0 0015 uF it SOF2U102M C2531 K50177103 2523 2525 K50177223 Mylar 50 0 022 uF C2537 2528 50177333 Mylar SOWV 0 033 uF C2516 2518 50177473 2521 2547 2570 C
48. R495 0516 __ 700245152 15 430431433 oasis 435 440 442 R454 455 458 200245222 VJ 22 443 446 448 0510 451 455 100245272 DEC DENS 2 1kQ 460 465 482 R401 409 412 300245332 0 00 0 3 3 484 486 413 431 456 490 491 493 496 0511 494 497 C402 403 407 K13170473 0 047 uF 489 414 416 418 422 425 427 J00245103 ES 421 424 436 441 444 44 471 477 484 457 458 462 485 491 492 463 468 471 0501 0509 473 474 495 0512 498 C449 4 07 7 12k C461 467 50177103 Mylar 7 499 409 439 456 50177473 0 047 uF 100245273 466 480 481 nil 0500 Tantalum 35 0 22 uF Noms 77 7 7 os 4 Anal 0503 0505 _____ gt gt rasa pemem 707 7 8 L401 408 L1190016 FL SH 101K 100 uH peer imo asas _ RSH 27k T0uH 2 220145 Fuss G n c EL Rc e ee ee ee eM es o memwnowerER S TRANSFORMER ________ 1407403404 10020140 RI24170 407 809 413 iis 150705504 O r C C NOMEN p as ERU 2 gt REPAIR PARS T401 406 408 10020141 R124171 415 1748 110020221 eee
49. enquiries mauritron co uk 67 SECTION 1 GENERAL GENERAL DESCRIPTION uu 05200050 ___________ 1 1 SPECIFICATIONS u cic aid 1 2 RECOMMENDED ACCESSORIES 1 4 CONTROLS AND SWITCHES 1 6 REAR APRON CONNECTIONS 1 9 MICROPHONE CONNECTIONS 1 11 1 12 INSTAEE ATION Uu us eee Du t mS muU ante 1 14 OPERATION gt eee ewe aa asua 1 16 GENERAL HIGH PERFORMANCE HF TRANSCEIVER YAESU 10120 some PST D te MARR EEE SS Be M eR C SASS NISN 7 See SASS vere sane Zann gs anm NC T GENERAL DESCRIPTION The FT 101Z series was introduced early in 1979 as the culmination of a decade of experience with the FT 101 series Borrowing heavily from the highly regarded FT 901 series the FT 101Z series brings together a number of top of the line features at a bottom of the line price As with the FT 901 the receiver section of the FT 101Z is particularly impressive Careful gain distribution has produced wide dynamic range without compromising sensitivity Variable IF bandwidth allows continuous adjustment of the width of the IF passband from
50. 10015 00 200 398 9 OO O 1022 1 5 i a 210 a Ses 5 puns ee 299 Sv 2200 0 2 5 2200 6 2 02 400141 900 66151 410 6 nL 9 ZH 423 390001282 o 400 i2 N 2 2 gt i o A o 8 SUS Jeo es 22 8 2 3 a t9 i t _ 4 x 7 2u 910 910 ti 022 m n ASISIOSC 10 Ee 2 12 TRANSMIT CIRCUIT SSB MODE The output from microphone jack J is fed through the GAIN control to pin 8 of the AF UNIT AF UNIT PB 1964 The speech signal from pin 8 is amplified by micro phone amplifier TA7063P and fed through relay RL 9 to the ring modulator Deo 10505 where the speech signal modulates the carrier signal delivered from Q The resulting double sideband signal is fed to the IF UNIT IF UNIT PB 1963 The 8 9875 MHz double sideband signal is amplifi ed by 3SK51 03 and passed through side band filter by diode switches D403 D409 181555 Daos and D4o7 181007 the signal is converted to a single side
51. 1114 ii ce ee ku _____ ____ 00245560 Carbon film 144 VJ 569 0539557 70041011 102 ______ _____ Isi 100 100245221 525 tr 1 kQ J00245471 9504 514 520 100245102 03000011 523 548 561 lt fr po Z J00245222 _ 22 15345355565 100245272 27ka R 10 62 69 1002453332 33kn 578 580 101245472 T N AF UNIT R510 506 531 J00245472 NJ 4 7 Symbol No Part No Description 536 537 544 45 549 550 563 566 575 5 6 6 8 ME msnm 00245562 Fn 542 568 0024568 re rer TRANSISTOR ________570 15658 0503 61090077 IC MC3403P uPC324C Q506 G1090064 MC14024B R501 507 519 700245103 i 10 529 555 556 558 571 572 PB 1964A 0001964 P C Board Q504 054 61090100 SN74LS123N 100245153 100245223 540 554 573 FET 2SKI9TM GR 8584 10124523 TJI 228 TR 25 564 0303130 7 cn G331000G 28C100GR 7 Rs47 574 10024514 O Q509 510 513 canam 7 mons o pua Bs 516 ________ 64 577 oosa 7 7 7 7 40 UU 7 7 7 OY 5010276229 composition
52. 12 oN 926 29 2806 ZOSO 29 280 lt COSO 29 2806 050 lt lt lt lt lt me mmm H n er gt gt gt gt gt 292280 lt 058 29 22804 9050 2 17 TECHNICAL NOTES POWER SUPPLY The power supply is designed to operate from 100 110 117 200 220 234 volts AC A DC DC converter is an available option providing opera tion from 13 5 volts DC Insertion of the appro priate power plug into the rear panel receptacle makes the necessary connections for AC or DC operation When the transceiver is operated from a DC 13 5 volt power source using the optional DC DC converter transistors T20A6 function as a low frequency oscillator providing AC voltage at approximately 80 Hz to the power transformer All of the tube heaters receive their power through the HEATER switch on the front panel When the HEATER switch is OFF voltage is still supplied to the receiver section thus allow ing continuous reception with reduced power consumption The heaters of the two 6146B are connected in series to operate at 12 volts DC The 14 volt AC power delivered from the second ary winding of the power transformer is rectified by Doos and Dos 06 Voltage regulators 2SB616 781 12 and 25 495 stabilize the DC supply at 12 volts The supply voltage is further stabilize
53. 2533 2502 2543 2560 2536 2545 100245103 mec 10 2551 2553 CRYSTAL FILTER 2567 H1100470 8 9M20A R2572 J00245183 CA gt poe R2513 2527 J00245223 7 m RN 00457 7 7 7 7 H3900300 CFWASE 7 7 7 7 478 O E 7 7 7 7 354 fr 2552 10024510 m m ls GERAMIC ISGRIMINATOR R2537 2556 I00245124 R2518 2520 100245154 2529 2531 gt Edd R54 10424 20 01 900 spr2 0 _______ ___ ____________ 2502 690900 33a POTENTIOMETER 7 lvR250 151721102 00 13 Ikop 25012500 o LL Ressron 51721503 8258 101254470 Carbon fim idw TJ sa pese V 5a _ 0 2 penses 7 _ _ _________ R2502 2503 700245101 4 capacitor j 2508 2548 2565 2569 2514 2575 2584 C2506 02179004 Ceramic 50WV CH 3p Suit DD104CH030750V02 C2556 00175150 SOWV SL 15 pF DD104SL150J50V02 2554 2564 100245221 a RES E 2200 2504 K02179011 Ceramic 50WV CH 27 pF G gt C2559 00175330 Ceramic 50WV SL 33 pF a m NR Mr 5 KS SSS 680 2529 00175470 50WV SL 47 pF R2515 2546 100245102 7 104514701507 02 2555 2573
54. 2SC380Y where the speech signal modulates the AM carrier signal at 8988 3 kHz delivered from Q2a04 25 19 Tne modulated signal is amplified by 0406 3SK51 and delivered to transmit mixer Qios For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk COMMON CIRCUITS VFO UNIT PB 1440B 3420 A modified Colpitts type oscillator 15 used to generate a 5 0 5 5 MHz VFO signal thus produc ing a 500 kHz tuning range The oscillator signal generated by 2SC372Y is varied by which is geared to a precision built dial tuning mechanism consists of two sections the sub blades compensate for the capacitance tion of main blades which may result from extreme temperature change Varactor diode 182236 may be varied by tuning Laos providing 2 5 kHz offset from the dial frequency clarifier oa EH LB T E c25 033 du 434 The VFO signal is amplified by buffer amplifiers 2SKI9GR and Qao 2SC372Y and passed to the PREMIX UNIT NB amp FIX UNIT PB 1961 Two crystal controlled channels are provided for operation with this transceiver The oscillator signal is generated by Q203 2SC372Y and amplified by 25 372 and delivered to the PREMIX UNIT Crystals X494 X202 oscillate in the 5 0 5 5 MHz r
55. 35 ones S E 309 310 L0020508 par Sevice Manuais Gonet Ta Qr 351694 Fax 01844 064 mus 1002020 AF00 XFI0GSQXFIOHW ec cm PE DP MR C x a LLL _ Son C es med SPORON aaa 0 004520 Carbon fim na MB gt 07 T 208 IF UNIT R402 408 419 J00245101 e 1002 422423437 60019630 IF unit with components 439 444 446 463 464 469 Pd 4548248 o gt Yasar P20 FET TRANSISTOR 486 0507 m osos 100245331 0415 04 G3090034 1002485391 5 29 REPAIR PARTS aada 0245471 Carbon film 1 4W Vj 4700 CAPACITOR R474 480 J00245561 E i 560 2 C477 K30176221 Dipped mica 50WV 220 pF 0522 C445 472 K02173100 Ceramic CH 10 pF R467 468 J00245681 i 680 2 C488 492 K06175330 UJ 33 pF 10 429 436 438 404 407 420 1000481 8202 06175390 39 pF R406 416 428 500245102 1 440 442 449 453 457 459 462 488 494 401 405 406 13170103 0 01 uF 0504 0506 411 413 415 0515 417 419 420 R9 J00245122 1269 423 424 428
56. 351694 Fax 01844 352554 Email enquiries mauritron co uk Provided by http www yaesu museum com Downloaded by Amateur Radio Directory 3 67 SERVICING RECT B MEDIUM BIAS VOLTAGES UNIT PB 1968B RIO22 5 2 39 iw IO 450wv 2 CIOO5 500wv CIOO IO 450wv DIOO2 01012 ee ee eee F 470K 1 2 gt gt 3 z 28 VOL S VRIOO RIOI3 1 9r m db BIAS 6146 B gt 25 as T 252 od 5188 OBI AS I2BY 7A lt Siu 5 818 01 9 919 00047 500w A 59 T 0006 0002 lt AS aoe 25 372 Q KEY N eB 51555 00 o 01003 Q AO ur dios a2 254639 5555 22K NN x 55 Lo amp EL TX 12VO EC HD zd 1968 B M BIAS VOLTAGE UNIT DC VOLTAGES KEY UP KEY DOWN KEY UP KEY DOWN KEY UP KEY DOWN 3 68 COLLECTOR EMITTER BASE 25 639 25 733 COLLECTOR EMITTER BASE 25 372 RECT B UNIT PARTS LAYOUT For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Chinnor Oxon OX9 4QY Tel 01844 351694 01 844 352554 Email enquiries mauritron co uk yits 19608e 2 2 Viewed from solder side SERVICING SERVICING TRIMMER A BOARD 1 970A E
57. 4875 47 51 Xa HL C 10 5 11 0 24 9875 RE 19 4875 19 9875 EE ___ x WIDTH IF 11 5 12 0 20 4875 20 9875 26 4875 20 9875 21 4875 6 4 6 EMEN 125 130 26 9885 21 4875 21 9875 EA NIE 13 5 14 0 27 9875 22 4875 22 9875 14 0 14 5 28 4875 100 22 9875 23 4875 es oe a xeexwm gt aci mam pxwewes s pe ww s mwesm ete Lacs mas ERE 1 mom gt Taman mam aa T Panora Lens wan Lees c pene EL mens Sam ow eee ps ae eee ean ees aime Tmar sema s rere 24 0 24 5 38 4875 8 8 seesws e 1 eo pe 34 9875 35 4875 0 E 47 29 0 29 5 37 9875 38 4875 29 5 30 0 43 4875 43 9875 QUESTIONABLE PERFORMANCE Table 6 Modifications to be provided for possible WARC expansion at 10 and 18 MHz 3 9 SERVICING DC DC CONVERTER INSTALLATION OPTION Early model before Prod 23 The optional DC DC converter is easy to install in a matter of minutes Please follow
58. 571 aa sens ee ee c Tkuma 7 ___ O reser x4ormsss SSF 0601 62 033080 _ 2SCSS0TMY eae WV a s c 505 515 538 K40120106 16WV TU GO MEME ec eee 552 554 564 ee _ 565 77777777 6201980 7 iue 11 562 40120336 4 33 R605 610 615 100245101 Carbon film 1 4W VI 1009 _____ 1 62062562 636631636 637 641 642 mer 646641651 652 656 657 ee a eee ee NNNM S ee 98 1 eueron 7 7 7 7 soa us uim 100 2 7 7 7o FL 5H 271K 270 uH 619 624 629 mH 633 638 643 648 653 658 FESR I0 MEUM C 255 C s s s 8 NM a a 2 muwsomwn 160260712 100245333 7 7 me 662267 888 639 644 889 654 658 ML CL senes 700245561 mu 616 621 626 635 640 685 5065660 E Lamer CONNECTOR R SATJA 502 0050040
59. 820 ohm Gray Red Brown resistor from the terminal strip marked E in Figures 5 and 6 7 Install the COUNTER UNIT The connection to the guide pins should not be forced Use the screws previously installed at A for securing the counter module at points lt lt support D in Figure 5 Connect the COUNTER UNIT 9 pin plug into the 9 pin 8 socket on the transceiver at point G in the drawing The coaxial cable from the COUNTER UNIT is connected to point F in Figure 5 Close the transceiver No alignment of the unit is necessary unless some change in the preset carrier frequencies is required for a special application In this case refer to the section on the COUNTER UNIT in the ALIGNMENT chapter of this manual 9 100kHz DIAL Ass y LED BOARD Figure 5 te 8200 Enlarged Part Figure 6 Double face EN tape Figure 7 SERVICING 1012 20 AUX BAND INSTALLATION Early model before Prod 16 The installation of a non standard frequency band may be accomplished in an hour or two using the AUX position on the bandswitch Some alignment is required but this is not a difficult procedure However please be advised that AUX band instal lations by someone other than an authorized Yaesu representative will void any warranties in force As well Yaesu cannot guarantee that published specifications for operation on the amat
60. Add a 270 k ohm V watt resistor in parallel with each of the following R1002 R1003 and R1004 Alternatively you may change each of the above resistors to a value of 180 k ohms 12 watt 2 Change Rioos to 390 ohms 2 watts s 3 Add a new 1 22 39 ohms 1 watt in series with D1001 as shown 4 Add a new 10D10 diode in series with 01002 5 D1ooi is being changed in production to type SMi 12 but field modification is not required 2 IBOk 1 2 16 V2w Beginning with production lot 6 the circuit was consolidated The circuit used after lot 6 is shown at C with the following exception R1023 was not installed in lots 6 and 7 and we recommend that it be installed in the field the next time you per form service The purpose of 2 is to provide a bleeder path for the filter capacitors ampi C CE C M CRM 71 AFTER lot 8 RIO22 21005 25 Me 300V gt AE ug 8 85 e E OF 2 0012 After lot 6 RIOO9 RIOO8 C AFTER LOT 6 SERVICING RECT UNIT PARTS LAYOUT Viewed from solder side RIOOI RIOO4 470k 270k Solder Side A AIR DIOI2 01002 RIO22 DIOO For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tal 01844 351694 01 844 352554 Email
61. Bore RELAY FBR211A D012M p 99 u J mA a J D e 2 e o 2 m eo gt 05000011 lt 3 8 REPAIR PARTS TRIMMER A BOARD Description 0021930 TRIMMER A unit with components F0002193B P C Board 1303 1305 K91000016 i 50 x 32 50 pF 1308 1309 TC1307 Symbol No K91000029 b 20 x 53 20 pF PB 2193B RESISTOR Carbon film 1 4W VJ 5 6 Metallic film 1W 39 2 Ceramic SOWV CH 10 pF mos ____ 720336473 oOo 110276474 Carbon composition GK470 T _____ K9100079 BW3P2 x 0 0 0 0 0 40pF eorerowereR romos K9100013 ECV ZW 20x32 20pF Lol d cies oos 1206 1209 _____ ___ K9100078 BW P4 420 K9100001 ECV 1ZW 40x32 40 pF __________ 11 _ Ceramic 50WV 16 ____ 12279003 _______________ OL 1013 1018 Trap For Service Manuals Contact 1015 a SENE ONG 4QY __ C1009 K40240106 Elecuolytic 250WV lOuF Stk 01844 9516
62. CIRCUIT In order to eliminate an occasional low level counter beat the following modifications may be of help 1 Insets from production lots through 4 a Solder a three pin one grounded solder lug to the Counter Support Board as shown in Figure 19 Solder new 0 047 uF and Ceo 0 047 disc ceramic capacitors as well as the new electrolytic 10 uF to the terminal per the schematic b POWER FINAL COMPARTMENT C68 PART OF 0 047u lOu ON PAGE 3 6 C69 0 047 Figure 19 MODIFICATIONS 2 Insets from production lots 1 through 5 a Install the three bypass capacitors C2324 C2325 and C2326 from the CW USB and LSB terminals of the COUNTER MAIN BOARD respectively to ground Refer also to the schematic for details these are shown installed in the schema tic on page 2 17 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon 9 4QY Tal 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk COUNTER SUPPORT BOARD Q2309 SN74I96N i 1 CN LSB CW 1980 COUNTER MAIN BOARD C2324 lt C2324 2325 2326 0 047 4 Figure 20 SERVICING VFO DRIFT IN CONJUNCTION WITH DIMMER CONTROL Some FT 101ZD transceivers from the first 6 production lots displayed a slight drift of the VFO when the dimmer control was rotated In order to clear u
63. IN THE FT 101ZD A highly useful signal in the FT 101ZD one that can be used for most receiver alignment steps is the internal calibrator Fed into the receive line right at the antenna terminal the calibrator signal should read about S9 10 dB with the preselector peaked at 14 200 MHz SSB mode While minor variations from this figure are no cause for alarm a blown RF amplifier FET will cause this reading to be practically nil In the following section we have presented aug mented block diagrams which should help you in tracing the signal paths throughout the FT 101ZD Armed with a couple of alignment wands and the calibrator signal receiver peaking can be completed in short order leaving you free to diagnose prob lems on the TX side TECHNICAL NOTES gt 2 gt Downloaded Amateur Radio Directory WVHOVIG A908 C e 1X3 10031 Ano 29v 1538 3 8 Vv 1293 1O LNOD LINSNVYL lt 03H 8 http www yaesu museum com 3A130903 260 130 29v 138 29v 450 AZLEDSZ O9NI GbZOvIOW Asias r 1080 41 9050 6050 T WAOE ox Dw zoe 1020 3 Xi Tid 855 44n8 250 20952 he 4 4 Z 1252 150 P
64. L B M BIAS UNIT _ J ir ope AGC OUT IF OUT EXT VFO KEY Tos FT IOIZD BLOCK _DIAGRAM 5 7 CIRCUIT DESCRIPTION RECEIVER RF UNIT PB 2154 The incoming signal is amplified by the RF ampli fier Qio1 3SK51 03 dual gate MOS FET with excellent rejection of cross modulation and inter modulation The amplified signal is fed to the Schottky barrier diode module Q102 ND487C2 3R where the RF signal is mixed with a local signal delivered from 104 25 2407 resulting in a first IF of 8 9875 MHz The IF signal is then amplified by Q103 3310 and fed to J101 QI For Service Manuals Contact MAURITRON TECHNICAL SERVICES RF UNIT PB 2154 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01 844 352554 Email enquiries mauritron co uk 4 9 ie x Qo lt 3sksi 03 902 ND487C2 3R 903 AGC 2 s 2 fat 697 Dog 4310 eY 22k 9247 vy ROP RIO 707 d 5553 2947 252 701 r 34 Rx 2702 35 2 e FN 33 s d 2 lt 85 5 2 5 5 lt lt 3 ow LY els 5 STi STS 3 105 C40 2 702 006 x RIS N ae 3SK73GR 905 E 20 10 25 2407 E33 a 7 28 560 c R26 120 s 004 25C2407 227 2 247 RII 560 PT 3 5 s e J 7
65. LINN 3128961 8d A sO o E cot lt dt lt 5 E gt lt e O a 20 sO 5 3 550 us m x 69 5 4 252 1 95 600 a D 2 C1 18 S dWv 5 ino 41 WSESISZ IZO 4961952 GIO Q XH NI 31 6 C1 Az 2 100 9v2 no s 3 828 100 2 ave 518 4vQ O 03 95151 99151 109 div T AS gt 58 A 823 E x kasta ag ED 200 02 M qm 924 game 02 104 1041 09 5 OTY x 01 ISHS A24 2S2 s LN 2 35 No 2084 zoo o 18 04 208d 8 59151 210 228 109 199 1300 RTS 00 3 AJT save D zor ee EE NB FIX UNIT PB 1961 A portion of the 8 9 MHz IF signal is fed through buffer 28C372Y and amplified by Q206 and 28C1583 When a carrier of noise free modulated signal is received the IF signal is rectified by Doo and Doo 1N60 producing a DC voltage This DC voltage is amplified by 28C372Y which charges C414 for AGC purposes The AGC voltage is us
66. No reception 3 40 some mode LSB USB CW AM Some mode No audio output S meter off scale tion on the marker signal signal 3 Partial reception or more bands some bands OK 4 Self oscillation Oscillation with Oscillation with HEATER switch either on or off b No audio output on Speaker appears OK no S meter deflection MARKER ON only slight S meter deflec Normal S meter de flection against marker S9 10 dB nominal a Poor reception on one HEATER switch on 3 41 Tracking error in coils SERVICING Defective Xs 02 D2404 Defective Xs 03 02404 Defective Q2408 02409 02405 D2406 Defective mode switch or cold solder joint on switch Defective RF GAIN control Defective Q419 Q420 PB 1963 Defective Q419 Q420 405 Defective 19 7475 MHz xtal Defective Q421 Q422 Q 423 Defective Q411 Defective PB 1960 Defective Q408 Defective Q412 Q418 Low PREMIX output see section on COM MON CIRCUITS Defective T 1201 C1207 Check tuning T102 1415 Defective XF4o01 XF 402 405 Defective FH2 lamp fuse Defective RL Antenna Relay Defective S2004 ATT Low PREMIX output see section on COM MON CIRCUITS Def
67. R2327 J00245392 R2302 J00245103 Symbol No Parts No ho gt Q3201 3202 G3090002 rm c ON UJ R2303 2323 10024513 0 150 2324 Wire wound 1W 3 3 Q 707 7 5 s S C Riss 7 7 7 7 7 18 7 waar OJO ojo K52247474 Metallized paper 250WV 0 047 uF __________ o K41140227 Electrolytic 25WV 22046 0900001 RK1 16B8R zs _________ 12113120 Ceramic SOWV CH I2pF KS T9012720 DC POWER CORD OJO nm gt WwW m gt K06175150 lau 0000000 ruse 2a o oo o u o ea gt 78 w eh a mue 7 7 U 3306 ACCESSORIES RTO TOOT TE symboiNo _______ Gace 7 7 0wnr ____________ Ksi176331 Sirol 30pF 2 wire 2 prong plug _________ 2 KSOLT7102 Mylar Poor mes wie without plug 7 T9012582A 3 wire 3 prong pleg UL U gt T9012484 3 wire 3 prong Australian ____ ______ 9012683 3 wire 2 prone EU pl
68. SELECT SW BOARD 1966 AND WIOTH CONT BOARD CLARIFIER CONT BOARD 1973 PB 1972 TRIMMER A BOARD 1970 AF UNIT PB 1964 TRIMMER B BOARD PB 1970 B TRIMMER C BOARD PB 1092 3420 Tempe MNA RECT A UNIT PB 1967 PA BOARD PB 1715 BOTTOM VIEW MAINTENANCE AND ALIGNMENT PREMIX LOCAL UNIT Premix Local Alignment 1 Connect the RF probe of the VTVM to pin 3 of MJ 2 Refer to Table 6 and adjust the appropriate transformer for a level of 300 mV for each band and crystal as shown in the table 24 4875 28 4875 32 4875 15m X 35 4875 12m Kedi 38 9875 x 2 x X od 42 4815 Tavs 42 9878 Ome Xen 43 4875 43 9875 Tus 1 Table 6 Q607 607 607 N 2 T 604 I OmD I OmC 1 OmAX 12m 15m PREMIX LOCAL XTAL UNIT PB 2153 5 17 PREMIX UNIT For this alignment a wideband not peak sweep PASSBAND generator as well as an oscilloscope should be 10 4 11 0 MHz used l Press the EXT select switch Apply 5 0 5 5 MHz sweep output to the VFO output terminal at the rear apron external VFO jack Connect a high impedance probe of an oscillo 22 9 23 5 Scope to J301 312 26 9 27 5 2 Adjust the transformers shown in Table 7 Ts 3 29 9 30 5 for a flat response across the enti
69. Si 1001 C0017151 Final board with components D1802 G2090060 LED GD4 203SRD without vacuum tube 1715 F0001715B Board GRAMM NNNM RESISTOR s Carbon film VJ Ik ______ R1804 1805 0024552 LS KR VIOL 1702 100245472 po y 4 7 VACUUM TUBE SOCKET VS1701 1702 P3090024 SB 3606 ae VR1801 J50710501 V10K8 1 2 500 2090002 Si 10D10 CAPACITOR eit Ceramic SOWV R1701 1702 310276560 poe m M1190002 1704 110276101 i i 1 1705 R1706 J31333010 Meter shunt 2W inp OMA SWITCH N4090011 2B0005FC2060 K12279001 Ceramic disc SOOWV 0 001 uF C1703 12279002 OOF ____ 1711 1712 LED BOARD C1701 31306102 Moulded mica 1kWV 1000 pF Description C1702 K30273050 Dipped mica 500WV SpF C0019740 LED board with components Oo o PRISTMA F0001974A P C Board L1701 L1190020 Micro inductor 150 uH REESE L1704 L1190039 T 560 uH 1901 1906 G2090060 GD4 203SRD 11020307 RF choke 1901 1902 101245102 Carbon film 1 4W Wrapping terminal LEVER SWITCH BOARD CLARIFIER CONTROL UNIT Description PartNo C0019750 LEVER SW board with component Board PRI Foo ec
70. TRANSFORMER 132276010 Wire wound 1 IQ El MEME Tsoi 10020209 4220209 214 POTENTIOMETER DEMNM ERE 22222 ee mer 0 0jwu em freee RNEENELL CL C512 130176271 Dipped mica 50WV Xop 4 11 REPAIR PARTS P0090043 5048 19A C640 K0217902 240 pF 1502 P0090040 048 15A C608 K02179027 270 C612 K02179023 Ceramic S0WV CH 180 pF 5 z J503 P0090037 5048 08A C601 603 K13170103 0 01 uF P0090042 5048 05A 605 607 1505 20090041 5048 03 609 611 Po 613 615 1961156 Fbr Service Manuals Contact R0042800 621 623 MAURITRON TECHNICAL SERVICES B Cherry Tree Rd Chinnor 625 621 Oxon 4QY 629 831 Tol 01644 351694 Fax 01844 352554 8 835 837 838 ________ _____ 1 PREMIX LOCAL UNIT COS T E T PREMIX LOCAL unit wah L L C C C ______ comonns o 10985 nF 101490 7 nass niso 7 038488 7 eame enos 424875 MHz 210152 221277777 xev Hor0530 429875 MHz 210153 222127777777 x 08 H0101540 434875 MHz 210154 212277777 169 1 1015801 43 9875MHz 8210155 Hoioseo 194875 MHz 210156 601240 920155011 1 20 ee ee EMEN NEUE cet C ee E ee 77712 Lo 02 ______ ____ 2 1601 60 10020017 852
71. Transistors 2SA564A 3 Integrated Circuits IC 15553 6 2547330 1 254639 1 uPASAH l 25 535 l 2SA733 l uPC78L05 Varactor Diodes 25 9450 13 2549521 13 uPC78L12 1 152209 1 Diodes 258616 1 uPC7805H l 152236 1 1S188FM 4 25 372 25 uPC14308 l FC63 151555 1 25 373 2 uPC2002H 15553 8 2SC380TMY 3 MC3403P 1 Zener Diodes FC63 1 2SC535A 1 14024 WZ06 103 2SC732TMGR 1 MSM9520RS 1 WZ090 2 2SC1000GR 2 SN76514N l 2SC1383 l SN74LS123N 1 Light Emitting Diodes 2SC1583 2 TA7060P 1 GD4 203SRD 9 2SC1674L l TA7063P 1 2SC1815Y 6 LED Display 2SC1815GR l Germanium Diodes HP5082 7623 6 25 2407 2 1360 11 13 1S1007 GB 11 FT 101ZD SERIES MODEL CHART BUILT IN FEATURE X AVAILABLE OPTION ALL BAND CRYSTALS DC DC CONVERTER UNE Se s MICROPHONE ME QUE RF PROCESSOR GM MANN AM UNIT Afar Pod S8 X EM Prod 2 x Either FM or AM Unit can be installed in your FT 101ZD 1 3 GENERAL RECOMMENDED ACCESSORIES For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk FV 901DM FV 901DM SYNTHESIZED SCANNING REMOTE VFO The FV 901DM external VFO provides a synthe sized control system for your FT 101ZD station A three speed scanner will take you anywhere in the band instantly and the auto scan feature will sweep the band
72. X2 p 0051220 9 4 k e ae 5 AN d i A _ RUBBER BUSH 50000001 k SUB DIAL ASS Y 5300289 lt SPACER R0042770 4 VFO CASE R0040840B E KNOB PRESSURE ASS Y lt gt EARTH LEAD 05300168 KE 7 s SUO EARTH LEAD POLYCARBONATE SCREW 4 gscUTCHEON ASS Y CALIBRATE KNOB 5300167 0040920 FIBRE WASHER 3 65 SERVICING RECT A UNIT HIGH LOW VOLTAGES UNIT PB 1967 907 0905 vO6B gt g Q lt O 12 DC VOLTAGES 12 GNO ACI2 6V HEATER O O O O 8v RECEIVE TRANSMIT 17 4 V 8v 120 gt 190 2 GNO OMMON OUTPUT emitteR INPUT COLLECTOR 9 8 9 cce E E z o n lt Ip x 2 a x 5 cosu 0684 _ 320V 78108 25 495 Viewed from solder side Viewed from component side 3 66 SERVICING CAPACITOR UNIT PB 1969A OV CO 200 C 900V PB 1967 RO2 47Ok ROI 470k 1 2 wW 1 2 W Aeaer 83 PB 1969A For Service Manuals Contact Viewed from solder side MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844
73. a 00302 6 _______ 1933050 61090023 rpp 1979 Count decode board 702309 G1090033 PB 1980A2 Main board oaoa 6109016 SNASON 4655 36 kHz CRYSTAL 1090093 SN74LS04N O Q2307 2308 61090079 02310 G1090065 Main board 6553 6 kHz CRYSTAL PB 1980B 4 REPAIR PARTS TRIMMER CAPACITOR 9100030 ECV 1ZW 40x 53 40 pF TC2302 K91000029 ECV 1ZW 20x53 20 pF 12301 L1020012 1 2302 sasi G3090008 MPS3640 TR 2SC380TM Y EE D ae 2312 i UJ e gt O uo uo p m w oo gt J gt bo O Wasa ss ORAN SENE ass s s C BEBE SRST C 0100250 65536 57501 2302 N7090016 Ses moz AE AAA gt ARE EN IE TEEN meses exu CL 2 I R2316 2326 100245101 Carbonfilm 1 4 WS VI 1009 625 09P 1 240136 0024521 7 7 7 5 208 with wiro E UU U 7 2 009 3024 2312 2314 ME 2322 poene DC DC CONVERTER OPTION Description TRANSISTOR T20A6 with insulator R2304 2313 J00245102 nm 1kQ 2315 2325 J00345222
74. a minimum reading dip on the IC meter Return the transceiver to the receive mode by rotating the VOX GAIN switch out of the MOX position 6 LOADING POSITIONS FREQUENCY POSITION 1 8MHz 2 0MHz 6 0 _ 3 5MHz 60 T OMHz 60 7 5MHz 10 5MHz 14 0MHz 30 40 20 18 5MHz m 20 25 2 30 _ 25 0MHz 10m A 28 0MHz 20 10m B 28 5MHz 29 0MHz 20 29 5MHz 20 After Prod 17 NOTE LOADING positions are nominal Minor variations from positions shown are to be expected FINAL TUNING Final transmitter tuning uses the relative power output setting of the METER switch At full rated output using a 50 ohm load the PO meter will indicate between 1 2 and 2 3 of full scale deflec tion If the PO reading is too high off scale or too low 1 4 scale or less and if the load impedance is very close to 50 ohms the PO ADJ control on the rear apron may be varied to provide the proper deflection Once the PO meter is calibrated off scale deflections are the result of reflected power high SWR and corrective action may be required in the antenna system Set the controls as follows for final tuning 1 Set the METER switch to PO Rotate the DRIVE control to the 9 o clock position GENERAL 2 Rotate the VOX GAIN control to the MOX position and
75. be selected by pressing or CH2 as desired See the crystal information elsewhere for full information on crystal requirements The external VFO FV 101Z FV 101DM and FV 901DM which provide versatile operations with your FT 101ZD are available from your Yaesu dealer Because there is no calibrated dial for the FV 901DM it can t be used with the analog FT 101Z For transceive frequency control on the external VFO press EXT For external VFO control of the transmit frequency with receive frequency control on the FT 101ZD press TX EXT For receive frequency control on the external VFO and transmit frequency control on the FT 101ZD press RX EXT For full transceive control on the FT 101ZD press VFO DIAL CALIBRATION AND FREQUENCY DETERMINATION The FT 101ZD mixing scheme accounts for the difference in carrier frequencies between USB and LSB For this reason no recalibration is required Once the calibration is properly aligned at the factory or in shop no further adjustment is required for accurate frequency derivation The 25 kHz calibrator is included largely for alignment purposes as it provides a useful reference signal for signal peaking etc Frequency readout on the FT 101ZD digital display 15 straightforward The full operating frequency is displayed with resolution to 100 Hz The analog display on the FT 101Z and FT 101ZD transceivers provides easy determination of the operating frequency The fre
76. enquiries mauritron c0 uk SERVICING LOW PASS FILTER ADDITION The FT 101Z and FT 101ZD transceivers were modified beginning with the production lot 04 with the inclusion of the low pass filter circuit shown below parts to be added are Lo 0 4uH and mica 80 pF 1 kV The drawing below is an underside view showing the correct installation Red Black RL2 Bottom View 19 12 9TURN For Service Manual C66 s Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01844 352554 Email enquiries mauritron co uk SERVICING VOX CIRCUIT MODIFICATION In order to ensure reliable VOX operation the 2 Add a new disc ceramic capacitor C574 following modifications were adopted as of 0 047 in parallel with Rs72 production lot number 7 and may be of help if 3 Reverse the polarity of Cses as it was you have a problem with inconsistent VOX timing installed in reverse order for the intended 1 Cut the lead to pin 15 of Qso4 Install a purpose The correct installation is shown in silicon switching diode 151555 in its place the drawing and a new capacitor is probably as shown in the drawing called for See also page 3 25 ee install diode C568 io Q 79 an C565 Ov 0504 0 047 R572 Reverse C Add SERVICING COUNTER
77. from a service standpoint TCso is the band set trimmer TCso is the VFO level set trimmer To confirm proper VFO injection connect the VTVM to the VFO output Adjust TCgo2 for a reading of 100 mV i j i 11 zm i 5 L E CT SWITCTH BOARD L cras d P UA LES M lt Aye E PUn V Can TCs01 X 602 17 9875 21 4875 NB FIX UNIT 28 4875 35 4875 42 4815 42 9875 43 4875 43 9875 19 4875 X 604 X 605 X 606 X 607 X 608 X 609 X 610 Table 7 Fixed Channel Frequency Alignment When the optional fixed channel crystals are being used they may be placed exactly on the correct frequency by adjusting for channel 1 and for channel 2 Confirmation of the correct 3 30 frequency may be made with an external receiver or by loosely coupling a probe from the frequency counter to the transmitter output l turn loop is usually sufficient to provide indication on the counter PREMIX LOCAL UNIT Premix Local Alignment 1 Connect the RF probe of the VTVM to pin of MJ 2 Refer to Table 7 and adjust the appropriate transformer for a level of 300 mV for each band and crystal as shown in the table PREMIX UNIT For this alignment a wideband not peak sweep generator as well as an oscilloscope should be used 1 Press the EXT select switch Ap
78. her operating habits 23 VOX GAIN The threshold level for the VOX voice operated relay system can be varied using this control In the PTT position PTT push to talk control 15 provided for relay control via the microphone PTT switch or footswitch 24 DRIVE This control sets the carrier level for CW AM and tuning purposes When the RF processor is ON this control varies the RF output on SSB as well 25 MIC GAIN This control sets the output level of the micro phone amplifier stage Clockwise rotation increases the mic gain level 26 COMP LEVEL This control varies the compression level for the built in RF speech processor The processor does not function in the AM FM mode 27 FUNCTION switches PROC This switch activates the RF speech processor This switch allows the insertion of 10 or 20 dB attenuators in the incoming signal path This switch allows selection of the desired AGC decay time In the OFF position the AGC is switched off and the S meter will not function AGC S F OFF PO IC ALC In the PO position relative power output is displayed on the meter In the IC position final amplifier cathode current is displayed In the ALC position ALC voltage is displayed Regardless of the set ting of the meter switch the meter functions as an S meter on receive NB MARK In the NB position the noise blanker is activated In the MARK position the internal crysta
79. local signal at the frequencies shown Table 3 Diode switches Deoi Dei2 151555 select E X N the proper local signal for the band in use The um p Mid local signal is then delivered to the PREMIX UNIT jtm 1 920079 15m Xeo7 35 4875MHz 29 9875 30 4875 2 12m 38 9875MHz 33 4875 33 9875MHz 10m A Xeos 42 4875MHz 36 9875 37 4875MHz 10 B X610 42 9875MHz 37 4875 37 9875MHz 10mC 43 4875MHz 37 9875 38 4875MHz 4 10m D X 612 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk EO SE ES 4 PB 2153 PREMIX LOCAL UNIT 6 QOl QI2 2SC380Y x12 DO 012 45 553 2 33 6875 AME 32 4875 728 roe 707 90 2 2 17 3 3 0 ce 2027 455 Sox ODF 15 RS JIK R d 5 k 9 ME 2 2K cOCAL Table 3 3 9875MHz 38 4875 38 9875 MHz 1OmD l 12m 15m PREMIX LOCAL XTAL UNIT PB 2153 PREMIX UNIT PB 2
80. mauritron co uk Viewed from solder side 3 79 SERVICING AM UNIT PB 2040 After Prod 8 PETS TOES 004 006 es rd 2SC732 TMGR 25 1 8 5 2SKI9GR 25 C28 0 01 Res 100 50mV 20 8988 GATE NO 2 GATE NO 1 DRAIN 5 OURCE SUBSTRATE AND CASE DC VOLAGES 3SK40M 35 51 03 SOURCE DRAIN GATE DRIVE MAX 2SK19GR COLLECTOR EMITTER BASE 25 380 2SC732TM GR 2SC1815Y 3 80 Er I SERVICING AM UNIT PARTS LAYOUT Viewed from solder side WHT GRN GRAY SHIELD PI9 J2402 P20 J2403 3 81 SERVICING 3 82 For Service MAURITRON TECHNICAL SERVICES herry Tree Rd Chinnor Oxon 40 Tel 01844 351694 Fax 01844 352554 il enquiries mauritron ce uk Manuals Contact SECTION 4 REPAIR PARTS For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 01844 352554 Email enquiries maunitron co uk REPAIR PARTS PARTS LIST AND ORDERING FORMS If you live in the United States you may order parts from Yaesu Electronics Corporation In other countries you should order parts from the Yaesu agent for your country In countries where Yaesu 15 not currently represented you may order spare parts directly from Yaesu Musen Company Ltd in Tokyo When ordering please specify the exact model number of the transceiver that the
81. off In addition the technician should rest his hand on the chassis as the component is inserted so as to place his hand at the same potential as the chassis better to discharge small amounts of static electricity through your fingers than through a 5 IC When soldering a CMOS IC onto a circuit board use a low wattage iron and be sure to ground the Gee tip with a clip lead if the tip is not grounded through a three wire power cord For Service Manuals Contact r MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron cO uk lt INSERTION OF PARTS ON CIRCUIT BOARDS All of the below are acceptable ways of inserting components into circuit board mounting holes gt a Bend leads slightly b Straight in mounting c Vertical mounting d Preformed disc ceramic capacitor Preformed resistor diode etc 3 12 BASIC SOLDERING PRACTICE 1 Prepare soldering iron and solder 2 Apply soldering iron to surface to be soldered 3 Apply solder to heated surface 4 When enough solder 15 applied remove solder Continue to apply heat until solder flows cleanly 5 Remove iron from work Do not apply more heat than necessary for good solder flow Soldering to terminal posts Be certain to apply heat to both post and wire 3 13 SERVICING EXAMPLES OF POOR SOLDERI
82. part is for Many parts are standard such as resistors and disc ceramic capacitors but you should use particular care when ordering such items as electrolytics tantalum capacitors and the like The parts list to follow identifies the board that the parts belong to as well as the circuit designation and part description A Part Number 15 also specified and this number will allow immediate identifi cation by our parts department of the item you require See note below Shipment of parts from Yaesu USA is usually made by UPS COD Allow at least a week for the parts department to process your order You will receive prompt notification that your order has been received and if parts are back ordered or if additional information is required you will be so informed PARTS ORDER EXAMPLE TRANSCEIVER gt CIRCUIT QUANTITY LOCATION PART NUMBER DESIGNATION PB 1960A FT 101ZD G4800510C 35 51 03 Note In earlier transceivers part numbering system was used in the manual For this reason the nomenclature 3SK51 will suffice for the part number All FT 101ZD transceivers have a part number for each component cg ee YAESU MUSEN COMPANY LTD BOX 1500 TOKYO JAPAN YAESU ELECTRONICS CORPORATION 6851 Walthall Way Paramount CA90732 YAESU ELECTRONICS CORPORATION
83. pcr SQ3081 R126 127 100245100 NB FIX UNIT R110 Parts No Description C0019610 0001961 116 120 121 G3303720Y G3315830 NB FIX unit with components P C Board i TRANSISTOR EA as ee RARR OSE 00543822 10201 04 02090029 unm _ __ __ _ ___ 6015850 ue ee ee Ri nca ee Carbon composition 1 2W GK 2 2 MQ R208 216 224 100245101 api EE ARMES duco m eee cur UT R222 236 400245471 cue oon 7 gt 234227 4 8 c c C t gt Carbon film 1 4W VJ 100 2 e k REPAIR PARTS 10020505 10020633 10020507 10020210 309 310 1311 312 T313 314 T315 220505 403 H1 100890 8 9 220633 404 1100470 8 9 20 220507 405 H 1100900 1005 220210 EE P1090018 P0090045 J301 P301 JACK R0517 0518 J00245220 Carbon film 1 4W 220 503081 0520 VJ SQ4052 R410 411 101245101 TJ 100 100 2 R402 408 422 100245101 423 437 439 444 446 463 464 469 475 482 483 497 IF UNIT R419 425 447 100245221 Parts No Description 451 486 C0019630 IF unit with components 0507 0508 3300 3900 P C
84. satisfactorily from a 13 5 volt DC power source capable of providing the required current The DC power cord is includ ed with the DC DC converter kit For under dash mobile mounting a special mobile mounting bracket is an available option for your transceiver FT 101ZD should be located away from heater ducts and a minimum of two inches of air space on all sides is recommended to allow proper air flow around the cabinet Never stack other units above or below the FT 101ZD as the accumulated heat from both units could cause damage The transceiver requires an average of 14 amps on transmit with 20 amps on voice peaks The DC power cable comes equipped with a 20 amp fuse Be certain to use only a 20 amp fuse when making replacements When making battery connections be absolutely certain that the RED lead is connected to the POSITIVE battery terminal and the BLACK lead is connected to the NEGATIVE battery terminal Reversed connections could cause permanent damage to the transceiver OUR WARRANTY DOES NOT COVER DAMAGE CAUSED BY IMPROPER SUPPLY CONNECTIONS It is recommended that the power connections be made directly to the battery instead of to the ignition switch etc The battery provides con siderable filtering action against ignition noise and connection to the ignition switch can place the power line in a noisy circuit Keep the power lead as short as possible and keep the lead away from ignition cables GENE
85. second IF filter is instantly aligned with the first filter returning the receiver to a 2 4 kHz bandwidth For extremely strong signals the ATT at tenuator switch may be activated providing 10 dB or 20 dB of attenuation on the incom ing signal path depending on the position of the ATT switch 6 Under conditions of very heavy QRM while operating CW the APF Audio Peak Filter may be activated Push the APF NOTCH botton to APF and tune the APF NOTCH con trol for maximum enhancement of the desired signal The operator will observe that the back ground noise will be reduced dramatically resulting in excellent signal to noise ratio For elimination of an interfering carrier with in the AF passband set the APF NOTCH switch to NOTCH Then rotate the APF NOTCH control carefully for the best nulling of the offending carrier The notch is ex tremely sharp so tuning 15 critical but the excellent notch depth is extremely effective in eliminating interference TRANSMITTER TUNING The following tuning procedure must be performed prior to commencing operation on the desired mode See the paragraphs relating to the specific mode after basic transmitter tune up has been accomplished Be certain that a dummy load or matched antenna is connected to the antenna receptacle on the rear apron of the transceiver It is possible to damage the final amplifier components of this equipment if this simple precaution is not followed pr
86. the crystal frequency as follows F 26498 5 21420 5078 5 kHz Inspection of the values of F in Table 1 will reveal that the 7199 kHz crystal for LSB will work on 14199 kHz 21199 kHz etc Of course LSB is not normally used on these bands If the operator switches to USB the operating frequency will be moved kHz in this case to 14196 kHz 21196 kHz etc If the move is made from LSB to CW the frequency will move 2 3 kHz down 8998 5 9001 5 20m 19498 5 19501 5 19499 2 A 17m 23498 5 23501 5 23499 2 1 26501 5 34501 5 34499 2 34998 5 35001 5 34999 2 Table 1 4 After Prod 17 Load Capacitance 30pF Series Resistance 25 Ohms or less 7 or less Static Capacitance Table 2 Provided by http www yaesu museum com Downloaded by Amateur Radio Directory SECTION 2 TECHNICAL NOTES PARTS DESIGNATIONS ON CIRCUIT BOARDS Mtt e nn nn 2 1 AUGMENTED BLOCK hh hh emet 2 2 FREQUENCY RELATIONSHIPS CRYSTAL DATA CIRCUIT DESCRIPTION sone REI bl eR 2 8 TECHNICAL NOTES PART DESIGNATIONS ON CIRCUIT BOARDS FT 101Z CIRCUIT BOARDS The FT 101Z series integrates the mother board concept and the plugin type of circuit card Each circuit board used in the FT 101Z has a code number assigned to it and each part within
87. the transceiver has a part number assigned to it e g Qs02 Parts numbers 01 99 e g Riz are located on the main chassis Other parts located on the circuit boards are assigned a three or four digit part number the last two digits are the part number for that particular board while the first one or two digits are the code number for the board Thus Qsoi is transistor number 01 located circuit board number 3 which is the PREMIX UNIT Refer to the accompanying chart for a tabulation of the code numbers assigned to the various circuit boards used in the FT 101Z series For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk Code Unit Board Designation l RF PB 1960A PB 2154 2 NB FIX PB 1961B 3 PREMIX PB 1962A PB 2152 4 IF PB 1963B 5 AF PB 1964A 6 PREMIX LOCAL 1965 PB 2153 7 SELECT SW PB 1966C 8 VFO PB 1440B 3420 9 RECT A PB 1967 10 RECT B PB 1968A 11 1969 12 TRIMMER 1970 PB 2193B 13 1970 2192 14 1092 15 BW CONT 1972 PB 2217 16 DRIVER PB 1714A 17 FINAL PB 1715A 18 CLAR CONT PB 1973A 19 LED PB 1974A 20 LEVER SW PB 1975A 21 DISPLAY PB 1978 PB 2098A 22 COUNT DECODE 1979 23 COUNTER MAIN 1980 PB 2086A 24 AM PB 2040 25 FM PB 2218 32 DC DC CONV SIGNAL TRACING
88. the VOX relay Now place the microphone in the normal operating position and speak into the micro phone to see if your voice will activate the VOX relay If not may be advanced too far B VOX relay delay setting l Adjust the DELAY control VR located on the front panel for the desired delay time This may require a different setting for phone and CW operation owing to differing operat ing techniques For CW or phone operation using a footswitch the VOX GAIN control may be rotated fully counter clockwise to the PTT position CW Sidetone L The CW sidetone level may be adjusted by means of VR located on the rear apron Marker Frequency setting Preset the controls as follows BAND JIY WWV DIAL 5000 0 kHz PRESELECT Peaked for maximum response e 9 e gt e 4 Place NB MARK switch in the MARK position Tune in the WWV or JJY signal and adjust TCs9 for an exact zero beat with the carrier of the incoming signal 0514 Qs13 VRso1 T 502 J505 T 501 SERVICING Carrier Frequency Adjustment RL sot SSB Carrier Point Tune up the transmitter on 20 meters LSB mode into a dummy load Apply a 1 kHz audio signal to the microphone input and adjust the audio generator output until the transmitter power output is 60 watts as indicated on the dummy load wattmeter Shift the audio generator output frequency to 300 Hz wi
89. the internal crystal calibrator is activated GENERAL 26 POWER This is the main ON OFF switch for the trans ceiver 27 HEATER With the HEATER switch on heater voltage is dpplied to the driver and final amplifier tubes This switch may be turned off during periods of RX when energy conservation is critical 28 PHONES This is a standard 4 phone jack for use with headphones 29 MIC This is a 4 conductor jack for microphone and PTT input LON Mic plug o z iw lt x ES Headphone and external speaker plug Key plug PIN No 1 HEATER 2 HEATER 3 NC 4 NC 5 NC 6 NC 7 ALC 8 GNO 9 TX GND 10 RX GND 11 NC ACC plug After Prod 24 PIN No VFO OUT 2 3 EXT 6V IN 4 AGC IN 5 TX 12V IN 6 5 VFO Plug N GENERAL REAR APRON 1 RF OUT RF output of 3 volts RMS is available at this jack for use with a transverter Output is from the driver stage 2 GND For best transceiver performance as well as protec tion from electrical shock a good ground connec tion should be made at this point using a heavy braided wire of the shortest length possible 3 ANT Standard UHF connector for the antenna 4 RCV ANT This jack is switched in parallel with the ANT jack on receive for use with an external receiver 5 PO ADJ This control adjusts the relative power output meter 6 ACC Transcei
90. the transmit side as you have already performed a thorough checkout of all receiver and shared circuits hopefully In this section we will provide troubleshooting advice which leads you directly to suspect com ponents As the FT 101ZD is a complex electronic instrument though it is obviously impossible for us to trace the path of every possible malfunction in the radio Therefore if these tips do not lead you to identification of the trouble the logical elimination process is the way to go 3 37 For troubleshooting an extender board is a valuable tool for quick and easy voltage testing A double sided 10 pin extended board will allow tests on the RF and PREMIX boards and a 14 pin single face extender will do for the PREMIX LOCAL board The other boards in the FT 101ZD are not of the plugin variety but test points are provided for easy servicing 10 PIN EXTENDER BOARD 14 PIN EXTENDER BOARD SERVICING TROUBLESHOOTING A FUNDAMENTAL ANALYSIS OF THE TROUBLE The failure may be caused by one of the following 1 2 3 1 Mechanical defect Electrical defect Others Murphy s Law etc MECHANICAL DEFECTS Typical mechanical defects encountered by the technician are a b 2 Damage from shock during transportation remember the unit was probably subjected both to sea and truck shipment Damage caused by vibration in service Damage caused by forcing stubborn knobs or swit
91. tone of the marker signal 3 Switch the RX CLARIFIER to ON and observe the tone of the marker signal If it is different from when the clarifier was turned off adjust for an identical tone with the CLARIFIER knob exactly on the zero mark COUNTER UNIT Early model Prod 01 15 The carrier points for USB LSB and CW are preset as follows USB 91 011 0 LSB 91 014 0 CW 91 011 7 If for some reason it is desired to set these frequencies elsewhere refer to the Frequency Counter Preset Switch Position draw ing and chart Adjustment of 200 Hz is possible as shown The adjustment is carried out on the miniature switch shown in the drawing pw AM 958 ON OFF zs mamaman LSB 91 014 0 USB 91 01 0 C w AM 9LOI I 7 FREQUENCY COUNTER PRESET SWITCH POSITION I Ay M 1 2 s d E S r 7 5 eat NE Sh SO SSD ne ES E Sei nes y 00000000 Bl 100Hz 00900000 OL ll w CLARIFIER CONTROL UNIT PB 1973 VRiso1 OFF Position os d OFF Position 055208 N7090016 10040 008 66000005 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk 9 014 0 91
92. until it finds a signal The 100 Hz steps of the synthesizer are coupled with a 40 frequency memory bank allowing wide versatility for contest DX or net operation The TX RX clarifier allows offset from either dial or memory frequencies for precise tuning Because there is no display provided on the FV 901DM it is not readily possible to use this unit with the analog FT 101Z as the operating fre quency cannot be determined 901 901 VHF UHF OSCAR TRANSVERTER In another Yaesu first the FTV 901R brings together three bands in the VHF and UHF regions all in one compact case The basic 901 comes equipped for 144 148 MHz and the 6 meter and 70 cm modules may be added as options The satellite 1 3 bands provide operation on OSCAR Modes A B J on full duplex when an external receiver is used Of course the FT 221R or FT 225RD transceivers may be used for trans mission on the OSCAR 145 MHz uplink In this case your FTV 901R can be used for instant QSY between 29 MHz 145 MHz and 435 MHz Repeater split is provided on 6 and Z meters GENERAL teta 474 4 2 5 901 SP 901P SPEAKER HYBRID PHONE PATCH The 5 901 features a shaped response loud speaker and the hybrid phone patch allows efficient operation during patches Styling and size match the FT 101Z series YO 901 YO 901 MULTISCOPE The YO 901 Multi
93. without vacuum tube i NICHE x VACUUMTUBE 0 6146B VS1701 1702 c vacuum _____ P3090024 SB 3606 eae R1701 1702 Carbon composition 1 2W GK 56 2 L1702 1703 R1703 1704 110276101 1706 HR Meter shame 2W 1a _ CTE C1704 1710 K12279002 7 7 100 an 1109 1711 1712 C1702 _____ K30273050 CAPACITOR Ceramic disc 500WV 0 001 uF K 13170473 SOWV 0 047 uF Moulded mica 1kWV 1000 pF Dipped mica 500WV 5 pF 1 1190020 L1190039 Micro inductor 150 uH T1702 1708 11020807 CLARIFIE 1973 0001973 01801 G2090001 1802 G2090060 1803 100245102 R1804 1805 100245152 R1802 100245332 1801 100245472 VR1801 J50710501 1801 1803 RL1801 4 16 M1190002 RF choke 220307 Wrapping terminal C R CONTROL UNIT Description CLAR CONT unit with components P C Board LED GD4 203SRD Carbon film 1 4W VJ 1kQ POTENTIOMETER 10 8 1 2 500 CAPACITOR Ceramic 50WV 0 047 FBR211A D012M REPAIR PA va t DISPLAY board SW1801 N4090011 2B0005FC206 PB 1978 F0001978 62090069 _ HP5082 7623 LED BOARD Symbol 1974 0001974 2224 082101 2106 G2090060 GD4 203SRD k x x COUNT DECODE board
94. 0 LED UNIT PB 1974A SELECT SW UNIT 1966 3 72 BANDWIDTH CONTROL UNIT 1972 3 73 CLARIFIER UNIT 1973 3 73 LEVER SWITCH UNIT 1975 3 74 COUNTER DISPLAY UNITS 1978 1979 1980 3 75 DRIVER FINAL AMPLIFIER STAGES 1714 1715 3 78 AM UNIT 2040 P 3 80 SECTOPM 4 REPAIR PARTS PARTS LIST AND ORDERING FORMS R E ER RE ds 4 1 PARIS EIST 253 educ n ee S dade edt 4 5 GENERAL DESCRIPTION cleo deg 5 1 CONTROLS AND 8 8 5 2 REAR APRON CONNECTIONS 5 5 es Saw ees 5 7 CIRCUIT DESCRIPTION arab ee urs 5 8 MAINTENANCE AND ALIGNMENT 5 17 OPTIONAL INSTALLATIONS 43413 cuu 5 3 03 st obe eb 5 20 PARIS DIST Su ad ih eee man ane DIST UE ES 5 25 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email
95. 0 uF Csso 1 uF Cssi 1 pF Css 2 2 uF 1 uF In sets from production lots 7 through 10 the printing is not correct but the capacitors have been correctly installed The prints on pages 3 60 and 3 61 are correct as is the schematic diagram C506 220uF ay C502 470uF SERVICING MAINTENANCE AND ALIGNMENT WARNING DANGEROUS VOLTAGES ARE PRESENT WITHIN THIS TRANSCEIVER USE EXTREME CAUTION WHEN WORKING ON THE TRANS CEIVER WITH THE COVERS REMOVED DIS CHARGE ALL CAPACITORS BY SHORTING THEM TO GROUND WITH AN INSULATED SCREWDRIVER AFTER POWER HAS BEEN REMOVED OBSERVE NORMAL SAFETY PRE CAUTIONS ALL TIMES CAUTION Never operate this transceiver in the transmit mode without a matched antenna or dummy load con nected to the antenna receptacle on the rear panel It is possible to damage the final amplifier tubes and the pi network components if the transmitter is operated without the proper load termination GENERAL This transceiver has been carefully aligned and tested at the factory With normal use it should not require other than the usual attention given to electronic equipment Service or realignment of a major component may require substantial adjustment under circumstances though should realignment be attempted unless the opera tion of the transceiver is fully understood the malfunction has been carefully analyzed and the fault has definitely been traced to misalignment Sudd
96. 000190 PC Board cioniosnne 13170103 7 Ds 02000 1604200 119 12 tt MUERTE CC LL issus Yn 105 131 70473 7 RF UNIT B 122 123 127 129 132 134 0950 with components 136 137 139 549038 16 SEMEN AE MEL p ferrans IC Ring Moduiey oio cswowrer _______ oor 8 05 K91000019 ECV 1ZW 10x40 aj exwwis ossmon gt Cd i i n sae smaris E eese ne ou isio Lit90033 82a 105 109 T104 109 111 LIU 10H S Lior 110115 L1190038 FLsH271K 2704H ___ E SEs VIRUS 7 7 7 F sss S S Se SE 03579 Carbon fm ZW _ 1091410415 00440177727 nore uz 000 116 124 125 moa feooomial 140 nk 7 7 7 s 398 L L C C R106 107 115 ma E s 114 139 aK R108 117 126 100245121 qnem mew Rit 130 7 7 e ooa E oasa oe RIG fonsi 7 7 7 7 398 Russ 2 7 7 7 398 ___ ___ 00208102 7 7 7 mic 7 7 7 7 A961 FO0OT96IB
97. 00431 gt gt gt ce H1100860 XF402 Option H1100880 lt 330 REPAIR PARTS e gt CA R432 VJ 680 0 Rago 100045 7 7 110246565 TRANSFORMER e CA c e gt 1410 T402 403 404 10020140 R12 4170 ee LI POTENTIOMETER 414 VR401 402 151723102 SR I9R LKB T401406408 L0020141 812 4171 vas saos 08 455 Wan mes MOONE 7 pa 0020209 220209 HEN cm Dipped mi SO aoe LLL aay 7 Ob Mm connecToR oo Cura aor ______ Cu moms _ ai CH cu gt top C 77 S RN D bo gt o lt 2 j Wan amus o cum tis meom ena 401 405 406 K13170103 i E 411 413 415 05000011 Wrapping terminal 417 419 420 423 424 428 430 431 433 4 For Service Manuals Contact AURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor 451 455 Oxon OX9 pm er 460 465 482 dE EK Parts No Description Email
98. 0139 91 013 8 USB 9r 0It O 9 01 7 00000 mmm 00000088 91 010 9 91 011 6 00000000 91 010 8 91 OI 5 SERVICING FAULT LOCALIZATION The process of troubleshooting is highly individual istic Fundamentally though the process is one of logical elimination Begin with a visual inspection of the transceiver looking for broken discolored or charred com ponents Smell the unit as burnt transformers smell differently than resistors etc If you do find a component that is cooked remember that an other fault may well have caused the destruction of the part you have located Set up the unit for test using a dummy load and wattmeter Never shoot trouble using an antenna Initially turn on the receiver and check out only the RX side Any malfunctions you detect on the receiver side should be repaired before you check out the transmitter In doing this you may well cure the entire problem as much circuitry is shared on TX and RX The logical process of fault identification involves determination of the missing function no RX on LSB then the board at fault AF UNIT then the band circuit LSB oscillator then the malfunc tioning part 502 If after the receiver inspection is completed all is OK switch to the transmit side following the same logical procedure function board circuit com ponent Concentrate on those sections unique to
99. 01ZD and FT 101Z are the cooling fan DC DC converter 600 Hz 350 Hz CW filter AM unit FM unit and microphone A diecast front panel and the heavy duty case provide maximum protection for your transceiver If the ratings of this unit are not exceeded it will provide the owner with many years of satisfying operation Please read this manual carefully before commencing operation in order to derive maxi mum satisfaction from your new YAESU trans ceiver Provided by http www yaesu museum com Downloaded by Amateur Radio Directory CONTROLS AND SWITCHES For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk 1 MODE Selection of LSB USB CW W SSB filter CW N optional CW filter and AM or is provided 2 APF NOTCH switch This switch selects either the Audio Peak Filter APF or the Audio Notch Filter When pressed the Audio Notch Filter function is activated 3 APF NOTCH The APF NOTCH control varies the frequency response of the audio peak notch filter The peak notch filter may be varied over the range 350 Hz 1500 Hz When rotated into the OFF position the APF NOTCH function is switched off 4 WIDTH This control varies IF bandwidth except on AM and FM from 2 4 kHz down to 600 Hz 5 SELECT switches When using the optional FV 101DM synthesized scanning exter
100. 03 2 5 3 3 221 PREMIX IN SO 4 Nie 20 120 TN ag 7 12 7 Q 343 SRS SS 40 373 PB 2154 RF UNIT FM UNIT PB 2219 OPTION In the FM mode the IF signal from the RF unit is fed to 2501 2SK125 where it 15 buffered and delivered through a 20 kHz band width monolytic filter XF25o1 8 9M20A to a mixer Q2503 2SC 5358 The IF signal applied to Q25os is hetero dyned with the 8532 5 KHz signal delivered from the local signal oscillator Q25o 2SC945Q thus producing a 455 kHz IF signal Next the 455 kHz IF signal passes through a ceramic filter CF2501 CFW455E and is amplified by a two stage ampli fier 2504 2505 28C945Q and then is fed through another ceramic filter 2 15 to an amplifier limiter uPC577H where any amplified variations in the signal are removed A frequency discriminator consisting of CD2501 SFD455S4 and 02503 D2504 1S188FM pro duces an audio output in response to a correspond ing frequency shift in the 455 kHz IF signal The discriminator output is first delivered through a de emphasis circuit consisting of R2527 R2528 and C2523 and then sent to Q2510 25 9450 When no carrier is present the 455 kHz IF the noise at the discriminator output is amplified by and and detected by 2505 D25
101. 06 and D55o 1S188FM to produce a DC voltage This voltage is applied to turn on 2509 25 9450 The thermistor TH5so1 STD 250 main tains the threshold level of the squelch control corresponding to temperature changes 012 2569459 2569450 A47 77 VREE m 37 22 While 02509 is the base of 2510 25 945Q is grounded to quiet the audio amplifier When a carrier is present the noise from the dis criminator output is suppressed to tum off 02509 preventing normal action of 02510 The squelch control sets the squelch threshold level 502 e 412501 VRzsos e 2513 t 02512 gt Qasoi Dosis 2 2501 5 2501 eae X2502 Qesis gt Ni Torgi 315 Q2s14 2515 a 6227 2502 2505 T2504 X2501 Quoi 2506 2505 9 o Q2510 m 2502 P2501 2506 2 25 02 507 2503 0 ut 014 015 207 907 237 220 2509450 21 477 008 52725 009 ato S 231 2809450 2569454 25 9450 car 205 532 723 627 60 ISIEBEM ISR d xdv 275224 4 AM FM v 52 3 ssa cw ev I 2 ovr 003 005 25 9450 _ 25 5358 Lush 20 Sex P 006 5
102. 1 j 5 1201 160m li TCizoz 80m 1 40 yy 20 4 20 TCi2os 15m 3 34 reading on the transceiver meter Now adjust TCiaos and for maximum power output into the wattmeter On receive tune to the marker signal at 7 000 MHz and adjust TCi203 for maximum S meter deflection the marker signal 14 To adjust the trap tuning leave the VFO dial at 000 and the PRESELECTOR at 6 Remove the dummy load wattmeter from the antenna jack and connect a signal generator to the antenna jack Inject a 90 dB signal at 9 9875 MHz Adjust Lizoi and Li301 for minimum S meter deflection Remove the signal generator and reconnect the dummy load wattmeter 15 Set the BAND switch to 80 the VFO dial to 000 and the PRESELECTOR control to 2 5 on the scale of 1 10 Set the LOAD control to the correct position Close the PTT switch and dip the PLATE control for minimum IC indication on the transceiver meter NOW adjust TCigo2 and 1 2 for maximum power output into the wattmeter On receive tune to the marker signal at 3 500 MHz and adjust TCi202 for maximum S meter deflection on the marker signal 16 Set the BAND switch to 160 the VFO dial to 400 1 900 MHz and the PRESELECTOR control to 1 2 on the scale of 1 10 Set the LOAD control to the correct position Close the PTT switch and dip the PLATE control for minimum IC indication on the transceiver meter No
103. 1190016 FLSH IOIK ae CM QAM eee eee NEN 1 K02179001 Ceramic dise S0WVCH 18 KO217908 2 pF SELECT SWITCH UNIT C828 i 8 pF 10 pF CH 18 pF K06173080 K06173100 K02175180 C0019660 SELECT SW unit with components F0001566C 7 tf OJO O O O 00 OO 99 Oj I 2 oto CO AJar i wj LL LLL 2 E s Konmon 7 7 7 7 oo Konmon 7 7 7 7 3i 02090001 Si Gus REPAIR PARTS C811 K02179023 Ceramic 50WV 180pF RESISTOR C821 823 K0017541 2 470 R908 101245560 Carbon film 1 4W TJ 560 C809 810 812 K13170103 i 0 01 uF R905 J10276220 composition 1 2WGK 229 815 819 820 R901 904 J10276474 5 470 R907 J20339001 Metallic film 2W 0 42 824 826 ____ 04673 Tantalum wv F905 4048 Eleeuolytie 2597 qVAABLECAPAGHOR ee A AE S S A EE rca TSN 100D15 uU TCR Sos
104. 152 premix signal is produced at SN76514N a double balanced mixer where the premix local signal from 1 12 is mixed with the VFO or d Jag crystal controlled 5 MHz signal The premix output 2 frequencies are shown in Table 3 The premix signal is passed through bandpass filter T301 T318 amplified by Q301 2 28C1923R The ampli fied signal is then fed to the RF UNIT where the signal is further amplified by Q102 for delivery to the transmitter and receiver mixers c X M o RO 10K Qo 28 1923 2SCI923R PREMIX UNIT 2152 RIO R2 22k 22k DOi DI8 SS53J 8 ii 12202132 PREMUE CW AM FM adm 124865 11 986 12 49 0990 12 4889 11 9889 _ 15 9875 16 4875 66646 60968 15 9883 16 4883 _ 20m _ 5 27 5 37 9875 38 4875 37 9883 38 4883 E 38 486 38 986 38 489 38 989 5 13 38 4875 38 9875 COUNTER UNIT PB 2086A 3420 PB 2098 from is amplified by Q2304 2SC1815Y and fed to gate 2 of Q23o1 controlling the gain of The local oscillator signal is applied to Large Scale this amplifier Integrated Circuit 1 51 chip for display on the front p
105. 1715 s 2 w FH Provided by BOTTOM VIEW http www yaesu museum com Downloaded by 3 3 Amateur Radio Directory SERVICING PILOT LIGHT REPLACEMENT Bushing lamp Holder Grasp here to remove COUNTER PRESET SWITCH REPLACEMENT Early model before Prod 15 Two types of counter presetting switches are used in the FT 101ZD and you should take care to install new switches correctly The two switches are the DSS208 type Yaesu part N7090016 and the 10040 008 type Yaesu part 66000005 Referring to the drawing note that when the switch modules are installed so that the numbering is on the same physical side of the switch lever although reversed in order and upside down the lever ON OFF direction will be the same Or if you install the switch so that the numbering is in the same direction as the other switch 1 2 3 4 5 6 7 8 the physical direction of the lever action will be reversed Needle nose pliers N7090016 3 4 The VFO pilot lamps are easily removed but a little caution is called for Carefully grasp the rear portion of the shaft with needle nose pliers and ease the lamp out of its mounting holder The pilot lamp for the front panel meter may be removed with your fingers Rubber bushing For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon 9 4QY Tel 01844 351694 01844 352554
106. 2 at 80 C Excessive drive Internal noise High temperature Instability MOS FET Static electricity Total failure MOS IC Crystal Shock Crystal destroyed Crystal filter High temperature Frequency drift Filter bandpass change Potentiometer Variable capacitor Trimmer capacitor Relay Component burned Value changed Open circuit Excessive power Aging High temperature Component burned Open circuit Noise Unsmooth rotation Shorted Leakage Open decreased capacitance Shorted Leakage Unsmooth rotation Excessive power Shock Excess voltage High temperature Excess power Ratings exceeded Dust between plates Shock forced rotation Open or short circuit Leakage or shorted turns Detuned Ratings exceeded Variation Poor contact Unsmooth operation Open circuit Ratings exceeded Aging Poor contact Noise Coil open Ratings exceeded Humidity 3 39 SERVICING RECEIVE MODE TROUBLESHOOTING CHART Probable Cause s Condition Problem Defective power switch a Fuse OK Defective AC line cord 1 No AC Power applied Cold solder joint to AC cord Loose contact at power jack Defective DC DC Converter check w o DC DC Converter Defective Do04 High voltage line shorted Short in 6146B electrodes
107. 20077 R604 608 612 J00245101 Carbon film 12w VJ toon Lo 616 620 624 628 632 636 XZ l 640 1 _ __ _ O O O DOO O SO O R603 607 611 J00245102 SELECT SWITCH UNIT 615 619 623 Symbol No Description 627 631 635 SELECT SW unit with components PB 1966C P C Board 700545772 602 606 610 700245183 EE 18 614 618 638 639 R622 626 630 100245333 i D701 Si 10D1 R601 605 609 700245563 7 x T 613 617 621 625629693 a a x R M1190002 FBR211A DOIM p K30176331 Dipped mica 50WV 330 pF SWITCH 637 C624 628 632 K02175470 Ceramic 47 pF 5701 M4090006 6B0003CC2060 36 AERE 6 7 7 7 Sip K02175101 om 4 a y REPAIR PARTS a P0090049 5048 16A TC801 K90000001 TSN 100D15 15 pF E LLL 8 K91000016 ECV 1IZW 50 32 50 pl lt 2 O pi gt gt 2 d 2 1701 f gt T VFO UNIT L0020268 220268 Parts No Description _______ 804 805 11190007 Micro FLAH L84H 0014400 VFO assembly 3420 L803 806 11190001 Symbol No E 0902 1190040 ee ee ye ee el eee een S 05 07
108. 22516 02503 02504 92506 2569450 3168 a2 577 F our 02 09 02508 02507 2529450 2529450 2569450 FT tolz FM BLOCK ee el Lorie e TRANSMIT CONTROL REPAIR PARS MAIN CHASSIS ee Seer C6 K30279052 Dipped mica 500WV 1100 pF Pte tRaNsistoR 0 02 DM19D 112KS TR 28A496 Y 50 WV 3000 DM19D 302K5 59 66 __ 1306800 Moulded mica 1 KWV 80pF 6109070 02279001 Ceramie s0OWV IF cto eee se koermo 214 toe ids Sf 5 1 Si 181555 D6 62090001 15 _ 460pF _______ e 7 1000pF 2 Sow _ _____________ C29343541 101245220 73 76 81 C12 22 24 K13170473 0 047 uF 39 40 56 58 101245101 seen S 100 2 60 68 69 82 84 12279004 K12279002 ________ 12451822 180 C2 25 26 _ K12329002 i 0 01 uF Feed thru 500 WV 0 001 ECK L2H 102PE R9 10 TOW 7 ca aonar Electrolytic 16 WV 47 uF with 15 L6 SOWV IOOuF i 42 330uF K40120106 4 10 uF Cement 3W 15 Q 6077104 war 50 WV 0 1 ae a rr een PEINE ee ee ee 22222 potentiometer TT VRI 160800078 VMIIAX
109. 2536 2549 40170105 C2526 40140475 L2501 2502 11190017 2504 L2503 L1190102 S8 104K 100 mH pue NEIN SENE IMMER MERE P0090075 _ P2501 P0090075 C2532 2533 40120106 Electrolytic 16WV 2540 2541 16RL106 2543 2544 2546 2567 16RE476 C2568 K40120107 Electrolytic 16WV 100 16RL107 C2545 K40109001 Electrolytic 16WV 100 16RE107 T2501 2502 L0020140 2504 Mylar 50WV 0 01 uF 50 20103 Mylar SOWV 0 047 uF Electrolytic SOWV SORL105 Electrolytic 25WV 4 7 uF 25RL475 10 y Tree d Chinnor GACY N 9 gt TRANSFORMER CONNECTOR 0306 5 1 1 1 5048 03A 5048 08A 5 42 666691 10008004 enas WV3SVIO 4010980 37672 20 H3183ANO2 30 29 p e E ar UE a ss LINN AS 123135 0 1 84 NivS av mi NOL 1045 l 2ZXI3 1X14 1X3 1 4X3 y WIS 8345 q b l END R _ 1 4 Sj eit 06 8 9 7 96 52 3 8 t LX Gl EH lt l lt x m 99 9 OX G YSCDGXSMOGY 2 4 1
110. 300 Hz to 2 4 kHz and an all new noise blanker provides significantly improved blanking capability The transmit side includes a high performance RF speech processor which provides a significant in crease in average power without the distortion found in some AF clipping systems used in other makes of equipment The final tubes utilize RF negative feedback for improved linearity Built into every FT 101ZD transceiver are digital plus analog readout of the operating frequency VOX semi break in CW with sidetone a 25 kHz crystal calibrator selectable AGC and a 10 dB 20 dB attenuator in the receive line For the economy FT 101Z model the counter and display units are options which may easily be added at a later date should you decide to upgrade your station Compatibility with the FT 901DM series acces sories lets you take advantage of such advanced features as the scanning and memory of the 901DM external synthesized VFO the 901 VHF UHF transverter and YO 901 Multiscope Read on for details of these accessories and their use with the FT 101Z circuits except for the driver and final amplifier tubes are solid state If the ratings of the solid state devices are not exceeded they will exhibit practically infinite lifetimes The FT 101Z series may be operated from AC supplies of 100 110 117 200 220 234 volts and a DC DC converter is an available option The pages to follow will describe more f
111. 352554 gt 21 3 1 Lex 9 98 22 one Q S VRIOOI pis ap 9 25 9 e 56 8 a 5 wo 9 o2 9 01003 KEY 20 O 2SA639 T ET TX 12 0 _ a Y 2 18 1968 RECT B M BIAS VOLTAGE UNIT Provided by http www yaesu museum com Downloaded by Amateur Radio Directory SECTION 3 SERVICING OUTER COVER 1 859 3 1 FRONT PANEL REMOVAL 555 9 3 2 CIRCUIT BOARD LAYOUT hme eet 3 3 PILOT LIGHT REPLACEMENT re rere emer 3 4 CW FILTER 5 555 55 3 5 COUNTER UNIT INSTALLATION 1012 3 6 AUX BAND gt 5 9 3 7 DC DC CONVERTER INSTALLATION gt gt 5 3 10 COOLING FAN INSTALLATION gt 5 99 3 11 SOLDERING AND DESOLDERING TECHNIQUE 999
112. 46E 5 112 10k0B ______ CAPACITOR vra 160800079 161100 skoa vrs X J62800056 6 05 skoB2k C y O vr 162800054 EVHCOASISB3 SkoBx2 1 0 VR7 162800055 515824 SkoB Sk A CAPACITOR K91000007 TSN120C x 2 VR9 10 360800038 VMI0A654A skoan TT 21 360800077 K1611000AZE SkoB C C 2 _____ Ct eaaeo 2 jroownB 000000004 222 Dipedmia 500Wv SpF 13 020690 K30276271 270pF 14 111020064 ______ LCQ17271K5 1516 L1020008 276331 500 330pF LCQ17331K5 CQ18621K 9 10020705 1 O 5 25 t3 REPAIR PARTS C To qmawsomwn D OTS 10020 7 SERVICES OOOO C C tet r C C C C Engr rsa x ur Pe s000fazis t0p 10sA 1 Po TREE veer SEX 4a jme OO Pd P9009 5047 12A with wie T9301410C _ 90 SMTIMAC 192013008 x LB prem sMTISA C 792013108 TRANSFORMER Pi0s0086 O _ SM UM m 1090072 504705A with wire T9201350A x SH 090 SMTOMA T9201310 Yr 0909 5087 120 792013100 mao MI190004 SMT03A 7 192014200 UU LL masa
113. 473 0 047 uU 39 40 56 58 60 68 69 coge 7 00 OO C30 32 33 54 12279002 55 61 C2 25 26 12329002 1 4 0 0047 ul ais K12329001 42 51 K 21270002 l eed thru 500 WV 0 001 zl ECK L2H102PE K40120476 Electrolytic 16 WV 47 ul ces K40120337 K40120106 67_____ 40100336 50177104 Mylar 50WV Ola VARIABLE CAPACITOR K90000026 Y B 250 250 pF K90000016 TRIMMER CAPACITOR K91000007 TSN120C 10P x 2 L1 L0020534B 220534B L2 L0020611 L1020065 L4 L1020064 220064 L5 L6 L1020308 220308 R9 R10 11190001 1 0710 251 250 uH 5 REPAIR PARTS a S DUM DARUM s a CU ANNE mnm sss s WENMNLL 1 qaqas a rs as NM 5047 12A 82401298 0090002 45 02 250042 with wire C Fs 777 090005 sa92Y 3W Pac 91 1090082 5047 15 92401318 E O 5047 19 __ 240132 ig o a eon Trower Pre gt P1090072 500705 240135 pm eee ie mc 7 bos sonra HOT ___ MERGE ee ee ee FRL 263 D012 04CS01 Fa ei Repos sts CRM P1090070 soroa ____
114. 4o4 for a reading of exactly 19 7475 MHz on the frequency counter Switch between USB and LSB and observe the background noise If there is any dif ference adjust VR 4 9 until the background noise is the same ALC Meter Alignment 1 On any band set the MODE switch to USB Set the meter switch to ALC With no speech input activate the transmitter Adjust for a 0 reading on the ALC meter scale SERVICING BAND WIDTH VRiso CONTROL UNIT For Service Manuals Contact PB 1972 MAURITRON TECHNICAL SERVICES B Cherry Tree Rd Chinnor Oxon OX9 4QY Tei 01244 351694 Fax 01844 Ernai enquiries mauritron co uk RECTIFIER B UNIT Bias Adjustment 1 Set the MODE switch to USB or LSB and set the MIC GAIN control fully counterclockwise 2 Place the METER switch in the IC position and set the VOX GAIN control to VOX Adjust the PB 1968 BIAS control for reading of 50 For 10 watt models the correct meter reading is 25 mA Q1003 1002 RECT B UNIT PB 1968 SERVICING VFO UNIT The VFO UNIT is very critical in its adjustment As well this is not an area which should ever require alignment Questions regarding drift etc usually can be traced to other areas of the trans ceiver instability in the supply voltage etc For this reason all cases regarding VFO repair should be referred to an experienced service technician The following components are of interest
115. 502 7 6 BUFF IPREMIX UNIT 1 r t LII PREMIX LOCAL FM UNIT 02501 2516 OUT IX If RX IF td rg Q2301 2319 COUNTER UNIT 02201 2206 5082 7623x6 DISPLAY UNIT UNIT 0601 610 M x x 108 42 9875 IOC 43 4875 100 43 9875 gt x T 40 21 4875 ANT 160 15 9875 MHz 80 17 9875 20 28 4875 gt 17 32 4875 723 15 35 4875 12 38 9875 42 4875 30 24 4875 RECEIVE lt TRANSMIT CONTROL Ca ai P Cf 8987 5kH2 4 9503 0424 404 4 25 1959 j vox DELAY SW FIL 4 0503 25 373 MC3403P 745523 LOCAL Ir SIDE TONE ANTI TRIP ir FIX T301 314 AF OUT 2SCI383 254564 id RL ORIVE 5 METER PULSE DET SP 0419 Ba 2SKI9GR SN76514 5 FIX OSC MIX AM FM 0509 0506 E Q418 0201 202 0207 209 25 1815 140248 25 372 INGO 151555 T osc DI V AGC AMP AGC DET Sw 1 NB FIX UNIT S HEIDE as PLT TI 91091 254733 KEY J
116. 54 itron co Email enquiries maurttron OUTER COVER REMOVAL b 3 1 SERVICING SERVICING TIANVd 3 2 SERVICING BOARD LAYOUT Early model before Prod 15 NB FIX UNIT PB 1961 DC DC CONVERTER OPTION x mus ume m sma ss x BIAS SET VR RECT B BOARD PB 1968 CAPACITOR BOARD l i PB 1969 e 99999909995 0v799 se eT AAA 9 5 71379532096 eraran TC EEES pd _ ee DRIVE BOARD tr 1714 IF UNIT UM a 19 PB 1963 PA TS RF UNIT 1960 AMUNIT ______ PREMIX UNIT PB 2040 PB 1962 OPTION i PREMIX LOCAL UNIT 1965 COUNTER UNIT VFO UNIT PB 1978 1980 PB 1440B 3420 TOP VIEW SELECT SW BOARD PB 1966 NM cupo CLARIFIER CONT BOARC BAND WIDTH CONT BOARD 771 PB 1972 s a Q i 1973 I gt rw TRIMMER BOARD PB 1970 A AF UNIT PB 1964 TRIMMER B BOARD 1970 B 1 1 PE TRIMMER BOARD M EY PB 1092 3420 R 7 RECTA UNIT an 197 EV Bd es PA BOARD
117. 8 4875MHz 22 9875 23 4875MHz 15m Xss 35 4875MHz 29 9875 30 4875MHz 10mA 42 4875 36 9875 37 4875MHz 42 9875MHz 37 4875 37 9875MHz 37 9875 38 4875 43 9875MHz 38 4875 38 9875MHz JJY Xen 19 4875MHz 13 9875 14 4875MHz Table 3 LOCAL AMP LOCAL QOI 902 2SKI9GR 280373 Q03 SN76SI4N 22 1 014 151555 1 809 2 08 144 2704M i 5 tt 15 18 TECHNICAL NOTES COUNTER UNIT PB 1978 PB 1979 PB 1980 before Prod 16 The premix local signal from the PREMIX LOCAL circuit is fed to amplifier 35 51 03 locat ed on PB 1980 The amplified signal is then fed to waveshaper MC10116 53640 acts as an interface between and the TTL circuitry The signal is then fed to the counter gate SN74SOON The clock pulses are generated by MSM5564 which produces a 655 36 MHz signal The signal is divided by a factor of 2 producing a 5 Hz signal which is fed to the counter gate The pulses which pass through the gate are fed to decade counter SN74196N which counts 10 Hz digits In turn Qz o 2207 SN74LS196N count 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz and 10 MHz digits The BCD output signal from Qr207 is fed through drivers 02213 MSMS61 to the display digits 05 10 1052106 HP 5082 7623 The system of presetting the counter can best be
118. 8259 9 9 zl 6 81 el 105 J ate um 238 RS 226 Se aft 0 PES D LINN 1 904 U ON Vd 1 LINA G L 900 3 dt dZ 812 m woouonuneugyseuibue Y 3 69166 77810 191 Inc ADP 6 uoxo JOUUIUD Py 9811 8 S3DIAH3S TVOINHO3 sjenueyy 9011196 104 1000 0 2495 WvHOvIO LINDYID Or au MS 121135 29029961 88 ms orn i 2 14 I Xid 1X3 X1 1x3 O cir i 1 Q Q O o p Bare D o Q gru 5 2 8 par TINY 19 8 5 9 10 r get lt A kuni oc I gi mz SE 5 Tse T suyaq 5 Gm J aroos O j BOZ 2 109 LINN 03A C amp ON BOt bi Bd LINN OSA 2248206 000062 D EXON z n
119. 89 201 6166 2 801 voi 6289766 N Cnn 1 948 BZ 292 2805 IE G 8t Z Ob p L 101284 F 948641 08 H31NDOS 2 4 waww 1 3308 XMO6bIS2 tO colo dWv 1v201 19507 2952 2010 20 lt 0 XIN XIN XL EXWOPSE 901 713 855 Z 2868 9 Q A3 fina svidg Watoay anc anaes 4225952 cero XL 955 AOS diNVA H313 2 52 10010 93H 8 1182 6561252 vevo ee n 21 990491 2050 LLL XY 6 857 cec 93H w ta ff k XX A ee Q s r wa sr r s w 71 Ata 250 AGIBISZ S jv MY 47 Hoooolosa HZOO22d 2060 8060 1060 a 5 JAWO 1H 6861252 46952 2150 934 diyi 713 855 MS 3308 ASISI2SZ 130 LINA mu Fe m cee eee eee Provided by http www yaesu museum com DIN
120. 94 01844 36204 cen Bn taedia 7 7 T TRIMMER BOARD ____ 50177103 Mylar _ O 0OluF 0021920 TRIMMER unit with components 00021928 pf ee ee ee lee ee ear eee qasapas 0 176271 Dipped mica SOWV ____ 270pF 5 777 288 xsoreen 0 0 620pF 0 Kjo 2000 CAPACITOR UNIT Ceramic 50WV CH 5 pF UU L eee _____ P C L 1101 1102 43279001 Electrolytic 500WV lY 22s LLL CE S2LW A ES E 771 rier capacitor 10 130 _ 91000079 BW3P 2 210 pF K91000078 ______ 420 4222 1306 ECV IZW 10x53 10 pF K91000029 E Ec NEED aa 100245562 R1303 J00245562 K30176271 Dipped mica 50WV 270 pF K30176391 MD 390 pF K30176651 UA 650 pF cle K30209001 1000 2 K 30209004 DMI9D202K1 SOWV 2000 pF lt V 2 gt gt e n 2 REPAIR PARS TRIMMER CAPACITOR P0090065 CONNECTOR PLUG QS P6FL 2301 K91000030 ECV IZW 40 53 40 090018 PIN PLUG 58 0090035 Acc PLUG PA602B04 FUSE 100V 117V 5A Q0000004 200 234 INDUCTOR L2301 L2030068 pu 2 ___ ara AM UNIT 0090051 Symbol Description F0002040 P C
121. A 3 wire 3 prong plug UL R24 400245392 7 7 7 Vi 3 wire 2 prong EU plug R2442 2444 100245562 RES 5 6 9 2 REPAIR PARTS R2402 2424 100245103 Carbon film 1 4W VJ 10 TRIMMER CAPACITOR 2446 2449 2402 K91000012 17 10 32 10 pF R2458 7012451031 TJ 2401 K91000013 20 x 32 20 pF R2407 J00245123 WJ 12k SENE 100243153 100245183 100245233 INDUCTOR 100245273 1 2401 2403 FLSH 101K 100 uH R2408 2412 J00245333 7 33k2 12402 FLSH 102K 1 mH ie 00245393 s 82427 100245563 R2417 2426 700245104 1009 TRANSFORMER 2451 T2401 10020141 1812 4171 R2428 700345683 T2401 R2417 ay ae HEN _ NM MEME 2 69090003 40 P0090041 po go 09097 5048084 2 ee PO P POTS j Nees eee ae 24 0 K30176391 Dipped mica sowv 390pF fT CMi6 K02175390 Ceramic CH 39pp 0 C2417 2426 02175101 10 05000011 Wrapping 2456 B4025945B PC B supportD xmuss 7 ___ ag L cmo Konmos meg PE C2419 2421 K13170103 UELLE C C NNUS SUPREME 2423 2428 or Service Manuais Contact 2429 2434 AURITRON TECHNICAL SERVICES 2436 2437 8 C
122. AIN 7 4 RF GAIN MAX Qazo Qaz gt lt lt O 0220 3 55 fr I O SERVICING IF UNIT PARTS LAYOUT 1 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Supa Email enquiries mauritron co uk Viewed from component side SOURCE SOURCE COLLECTOR DRAIN GATE NO 2 ORAIN EMITTER GATE DRAIN GATE SOURCE SUBSTRATE 7 AND CASE 2SAb64A 2SK19BL 3SK51 03 J310 2SK19GR COLLECTOR COLLECTOR V EMITTER EMITTER PIN 5 BASE COLLECTOR PIN 1 BASE 25 372 2SC535A MPSA13 TA7O60P 3 56 SERVICING IF UNIT PARTS LAYOUT 2 PIN NO 2 ide 4 XVOD M XVOD LHA XVOD P3 J403 iewed from solder s XVOD V x 48 HA NH9 LH XVOD 7101A AHA a34 9HO LHA 940 nna LHM P2 J402 X t EN ew A A yt War 67 100000000 13 NYE 1HA J PINNO 13A 2 13A LHA LHM 8 1 Q3H 1HA AVEO 4 9401 12 3 57 AF UNIT PB 1964 SERVICING 8 vosr
123. BLE3 0 1017 Contact cable 1 to rear ee jack TONE OUT 2 i FT 101Z ACC PLUG 70 ANTENNA aol d ol ANTENNA d CABLE 6 CABLE 2 1017 0 901 monitorscope mode 1012 YO 901 Lp 30 FT 101Z ACC PLUG Opt ANTENNA BAND E CABLE 1 CABLE 2 CABLE 6 FT 101ZD YO 901 Band scope mode 1012 FL 2100F Connect cable 3 to front panei jack OR Connect cable 1 to rear panel PATCH jack TONE OUT YO 901 54 3 Ls 8 1 Agha ee d ibd CABLE 5 T CABLE 5 __ ____ 2 L CABLE J CABLE 6 __ TO FT 1012D YO 901 FL 2100F GENERAL INSTALLATION The FT 101ZD is designed to be a single unit station for fixed or portable operation from AC power Power supply connections providing for operation from a variety of source voltages are available Please read the following sections care fully so as to ensure proper installation of your new transceiver PRELIMINARY INSPECTION Upon opening the packing carton immediately give the transceiver a thorough visual inspection Check to see that all controls and switches are working freely and inspect the cabinet for any signs of damage If any damage has been sustained immediately contact the shipping company and document the damage complete
124. Board 00 so 121090186 3021 03 with wire 19203800 M ge eee Le pm TRANSISTOR 044 63090035 FET 2SK19TM GR 11946 o4soostoc 35 51 03 2405 2407 G3303800Y TR 2SC280TM Y li 2 bo gt 1 w DC DC CONVERTER OPTION 2408 Symbol No 02401 63307320 02402 2409 63318150 G3090002 T20A6 with insulator 25 732 amp 25 1815 bo o e 2 ______ 2 06 62090029 IN60 R3202 131306339 Wire wound 1W 3 30 D2401 2402 G2015550 Si 181555 R3201 120376221 Metallic film 5W 2200 2404 2405 C3202 52247474 Metallized paper 250WV 0 047uF X2401 0100422 HC 18 U 8988 3 3201 41140227 Electrolytic 25WV 2206F ii 330 2 4700 l 1 VJ 2 7 3 3 o lt 3 8 Ca e C 4 UJ 59 e 92 2 99 pep _____ RAM 2457 100245470 Carbon fim 148 Vi 418 d 200 2414 00245101 100 2 5 M18 202 Ft 2434 2447 R2409 2419 100245102 2435 2436 2438 2440 2448 ACCESSORIES NE 7 AGPOmERCORD R2401 3410 Pd d 7 T9012582
125. C2002 delivering 3 watts of audio output to the speaker The audio spectrum is shaped by an active low pass filter of f 2 7 kHz 12 dB octave MARKER GENERATOR A 25 kHz marker signal is provided for alignment and testing purposes Marker generator 2SC1815Y generates basic 3200 kHz signal which is divided into 25 kHz multiples by MC14024B a binary counter ee ee ee a NOISE AMP 00 2 25C372Y 3 5 30 po 22x IrnH 103 tk 0 4 6 FIX CHI FIX CH For Service Manuals Contact tA Q lt 2 zo TECHNICAL NOTES Oxon OX9 4QY 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk 6 ino wayw 2 AB t vosr NIYO SNOL gt O m S ON LINN 96 6181252 300 015 eO O 602 Gs LE Ac xs gt 2 x1 8 osr SSSISI 120 vou 3 237 100 a 112 60H 4181252 600 R XI 3042 212 w 61 9 390001556 800 xO 6 713 4004 1021 i 9Y lt 123 t x
126. C504 519 521 K 13170103 5211531 7234 542 545 570 nee Ier Wi Gea 7 000 070 000 K50177102 Mylar 50 WV 0 001 ul C518 529 530 50177103 572 KSO lt gt J00245560 R509 539 557 100245101 100245151 R503 513 524 100245221 525 100245471 a R504 514 520 100245102 556 567 569 50177473 2 0 047 ul 523 548 561 573 574 Wesce 7 ww P s j es 8 507 517 527 100245272 K40170105 Electrolytic 2 Lub R510 562 569 100245322 550 551 560 571 578 580 568 571 7 7 Ria 8 2501 506 531 100245472 7 7 47 0 CS61 K40170035 owe ONE UNE 536 537 542 C536 7 K40140475 7 544 545 549 505 515 538 550 563 566 552 554 564 575 576 581 565 5521 527 532 100245682 7 7 68km C524 553 563 40126226 541 568 570 C08 40126476 R507 519 529 100245103 4 UM 511 7 40126107 572 40126477 81736 07 leo K40126336 R508 518 528 100245223 pM 540 554 573 555 556 558 Le S sna rooms eus vim LL _ L ossia 777 sss pum res RUE cr pens 77 7 si Hor Re me 7777 ume sm sa WOK Ra chen
127. CES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01 844 352554 Email enquiries mauritron co uk Es 22 986 23 486 22 989 23 489 Table 5 2 16 TECHNICAL NOTES QNVO8 NIVW YALNNOD EZ ON O86I 8d HtSVd g00 200 566161 210100 1000 2235642 2 S Oit 104 300930 LNnOO 6126 8 or 18 818 4 gt LA 2 A 84 118 9 _ wo Deh fe ehh x B bOSTbP NS 900 gt m gt gt 3 gt LEE SLE p hue un 5 1100 4 gt gt 5 2000 49 D gt gt I ol VT 8 99 E ul gee MOETEN X a Y x _ Jj SGS 9900 droo 2600 BT Ed OOSbZNS tOO V9SSWSW 0000 d o aa L AMAA o S LLLA LLL LLL LLL LLL LLL LL LL LLL 1 600 ee et L D Dany ii E Nem ee ee eee erga 9615 NS 961S1 4NS 2 200 Za E x 8605 gt AV1dSIGO
128. Defective Doos 13 6 VDC line Defective Di001 Di003 in DC 300 and 210 V line Short in pilot lamp supply Improper transformer connections b Fuse blows x Defective 6146B Defective Rio13 R1703 1701 Cold solder joint to pin 5 of 61468 socket Defective bypass capacitor in control grid circuit Check for 130 volts bias on 61468 Leakage or short at 1701 Leakage or short at Ci Fuse blows after tubes warm up Defective heater switch Cold soldering in heater supply line Tube heaters do not light up x X MAURITRON TECHNICAL SERVICES Defective tube 8 Cherry Tree Rd Chinno Oxon OX9 4QY r ACC plug not installed Loose connection at tube socket or ACC jack 01844 351 694 Fax 01844 352554 Email enquiries mauritron co uk Defective DC cord No DC operation OK on AC Defective T20A6 transistor in DC DC Con verter Defective D1003 D905 D906 OK on AC fuse blows on DC with heater switch on Defective T20A6 transistor Cold solder joint in DC DC converter OK on AC fuse OK but no DC operation Defective speaker Defective 2002 or 2SC1000GR on PB 1964 Defective audio circuit around above tran sistor IC Defective EXT SP jack a S meter OK but no audio output from speaker 2
129. EXT LED does Defective LED D1902 or RL701 5701 a f not work 1902 RX EXT LED does Defective LED D1903 or RL701 5701 a f not work 1902 E VFO LED does not Defective LED D1904 or S701 a f R19o1 work EXT LED does not Defective LED D1901 or S701 a f Rig01 work 5 Clarifier a Frequency jumps with Defective VRe Riso1 R1802 51801 51802 clarifier on RLi1801 b OFF and 0 condition Defective Riso3 Risos RLi801 do not coincide in fre quency c Frequency jumps with Defective VR 1801 R1803 Ri805 91801 clarifier off OK with A lt clarifier on d Frequency jumps Unstable 8 V REG supply check Qs regardless of clarifier Check VFO unit position For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk 3 46 RELAY CONNECTION INFORMATION Should the need for replacement of relays become necessary or if you are trying to verify proper relay operation the diagrams below should help you RL 1 90I E o 7 8 om 4 For Service Manuals Contac MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352 54 Email enquiries maunitron co NC VIEW SIDE VIEW C OIL RL 501 701 80 RL 2 3 l
130. Fully counterclockwise 2 Turn the power switch to ON The meter will light up and the operating frequency will be displayed on the dial window FT 101ZD Adjust the AF GAIN control for a comfort able listening level and adjust the PRE SELECT control for maximum receiver noise or signal level The PRESELECT control may require repeaking as the transceiver is tuned across the band A After Prod 24 7 A 8 1 16 3 RX CLARIFIER may be utilized if the received signal is drifting Push the RX but ton and rotate the CLARIFIER control for offset of up to 2 5 kHz A red LED indicator will light up when the clarifier is in use When pulse type noise is encountered the NB Noise Blanker switch should be activat ed Advance the noise blanker level control located on the front panel to the point which provides the desired blanking Do not advance the level control beyond the point required to eliminate the noise pulses 4 For varying the width of the IF passband rotate the WIDTH control In the IF two 8 pole crystal filiers are used One filter is fixed and presents a boundary for the band width The center frequency is then varied across the passband of the second filter using a mixing scheme that provides no change of pitch in the received signal 5 The result is a continuously variable band width from 2 4 kHz down to approximately 300 Hz With the WIDTH control in the 0 position the
131. ISO 90I SOvO AS Hi ANY SISO 250 8313 4 5 dWV iv Vd JY 01 22 352 226252 2 2000052 T GZ86 Eb 00 0191090 OLO OSO 1050 48 te 201 l 7 496 2 80 3v501 voi b S 8t S GI 831306 S 31 JAWO 78 3NO1 3015 Boso Fin assa 398 9 1252 16952 j L8b 1Z Ob 20059 4 Tat 234 ae 50184 ee AS LINDYID 4H dana 3 114 5 Av130 1545 XYOSINSZ oler 6561252 1010 2010 9260 5 IHXS 2868 15 J L LINN 3M ONIA 3 4 0 J 8919 le 24458968 9411 ZOLIA 1H9968 851 m a 2 66 850 dV ee ee XU AGOW M2 8SS TECHNICAL NOTES WVHOVIO 2018 QZIOl 13 1X3 InO 4 ino 29v 10 1 02 LINSNVYL A 3 3203H wann 250 ACLLIS 1090 250 226252 OIXZZe 2S2 019 1090 LINN W907 52865 T 61
132. K19GR PIN 7 PIN 1 TA7063P BASE Viewed from component side COLLECTOR COLLECTOR EMITTER COMMON EMITTER OUTPUT BASE INPUT 25 564 25 373 25 1383 2SC1000GR 781 05 2SC1815Y PIN 9 PIN 14 PIN 16 PIN 8 Nose P NOTCH PIN 1 SN74LS123N uPC2002H 34024PCOM 3 60 gr i t SERVICING AF UNIT PARTS LAYOUT 2 For Service Manuals Contact MAURITRON TECHNICAL SERVICES Viewed from solder side 8 Cherry Tree Rd Chinnor Oxon OX9 4QY g 9 01844 351634 01844 352554 Email enquiries mauritron co uk T d x lt 8 4 w m 5 3 3 a x x x o x x x 2 x z pe 205 5 58 6 5555 gt 8l je Uel l ra m 2 2 E 5 iB 5 se 2 15 2 PIN NO 9 P5 J502 g 3 58 5 gt 3 o d 100000000 8 2 PIN 32 PIN P6 J503 P18 4505 P7 J504 Provided by http www yaesu museum com Downloaded by Amateur Radio Directory 3 61 SERVICING PREMIX LOCAL UNIT PB1965 Prod 01 16 1965 PREMIX LOCAL UNIT No 6 TLT 7 X06 TOG 0 42 4875 4 12 006 TFS Gi 00101 2SC372Y xli x x N gt So 001 401 151555 1 DE g TN 2 amp 9 1 T mS 1 622 2V 9 in TO 0 007 3 A
133. MAINTENANCE SERVICE MANUAL FT 101ZD For Service Manuals Contact 3 8 9 MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01 844 352554 Email enquiries mauritron co uK YAESU MUSEN CO LTD C P 0 BOX 1500 TOKYO JAPAN YAESU ELECTRONICS CORP P O BOX 49 PARAMOUNT CALIFORNIA 90723 Provided by htt 1 http WWW yaesu museum com Downloaded by Amateur Radio Directory INDEX Page FOREWORD ub d ud a eS Se PEER AEE i SECTION 1 GENERAL GENERAL DESCRIPTION 1 1 SPECIFICATIONS 5a ou robore el eee A _ Ree ee 1 2 RECOMMENDED ACCESSORIES 1 4 CONTROLS AND SWITCHES 1 6 REAR APRON CONNECTIONS rssererrrrrensrrererrrreers 1 9 MICROPHONE CONNECTIONS 1 11 INTERCONNECTIONS 1 12 INSTALLATION RC Ke KORE HE eS 1 14 OPERATION red OPER Ue ROO cel Cs dae cedo vo o doe gs 1 16 SECTION 2 TECHNICAL NOTES PARTS DESIGNATIONS ON CIRCUIT BOARDS 2 1 AUGMENTED BLOCK 5 2 2 FREQUENCY RELATIONSHIPS CRYSTAL DATA
134. NG PRACTICE Solder bridge caused by use of too much solder 3 Cold joint caused by in sufficient heat to part of work resulting in poor solder flow ala Lifted trace caused by too much heat on circuit board foil Unstable joint caused by sufficient heat or solder ze He SERVICING CIRCUIT TRACE REPAIR Most of the printed circuit boards used in the FT 101Zare single sided boards However occasion ally a double sided board is used in situations where high shielding is required A comparison of the two types is shown below Copper Single Sided Plastic Phenolic Glass Board The Base Material Double Sided Plastic Phenolic Glass Board The component side is always opposite the solder side even if both sides are plated For Service Manuals MAURITRON TECHNICAL ME 8 Cherry Tree Chinnor Oxon OX9 4QY Tel 01 844 351694 Fax 01844 352554 Email enquiries mauritron co uk 7 wire used to connect between two sides of a double sided board 3 14 du I Sometimes after the design and drafting of a board are completed a board is produced with an error in it Though non technical managers sometimes suffer a stroke at hearing of this situation it is not unheard of in engineering circles Thus should you encounter etch cuts and jumpers on a board be assured that the modifications were made in the interest of securing optimum performance Unless you consider y
135. Never work on high voltage circuits while alone You may need someone to turn off the power in an emergency SAFETY FIRST TRT ae Li 44 lt RECT UNIT PB 967 SERVICING FINAL AMPLIFIER NEUTRALIZATION Important Note For this alignment use a NON METALLIC tuning wand 1 Set the BAND switch to 10C set the tuning dial to 29 MHz and tune into a dummy load for approximately 70 full output power 2 Set the METER switch to and observe the dip in the cathode current The dip should occur at the same point that maximum power output measured on the dummy load watt meter occurs If this is not the case adjust TC located inside the final amplifier cage for the required coincidence of maximum power output and dip on the IC meter CAUTION HIGH VOLTAGES ARE PRESENT ON THE UNDERSIDE OF THE CHASSIS AND INSIDE THE FINAL AMPLIFIER COMPARTMENT USE GREAT CARE WHILE MAKING ADJUSTMENTS IN AREAS OF EX POSED WIRING Note The final amplifier enclosure must be in place to provide the required RF shielding during the neutralization procedure Final Amplifier Compartment SERVICING CLARIFIER ALIGNMENT 1 Tune in the marker generator signal any band and peak the preselector on the marker signal 2 With the CLARIFIER control OFF make sure that the CLARIFIER knob is exactly at the 12 o clock position Note the
136. ODE switch in the TUNE position Adjust for a frequency counter reading of exactly 8988 3 kHz When using the optional CW filter a sub stantial loss on transmit when in the CW N position may indicate the need for adjust ment as indicated in steps and 2 IF UNIT PB 1963 IF UNIT ALIGNMENT S Meter Sensitivity Adjustment Set the BAND switch to 20 meters the main dial to 14 250 MHz and set the RF GAIN fully clockwise Set the signal generator to 14 250 MHz and set its output to 6 dB Tune the signal generator signal on the receiver and peak the preselector for maximum signal strength The S meter should just begin to move with the 6 dB input Adjust for a reading of 0 on the S meter Set the generator output to 100 dB and adjust VRaos for a reading of S9 60 dB on the S meter Confirm that the preselector is peaked Return the signal generator output to 6 dB and recheck the adjustment of VRao3 Variable IF Bandwidth Alignment 1 Set the controls as follows BAND 20 DIAL chess 14 200 MHz RF GAIN Fully clockwise WIDTH switch OFF USB Peak the preselector for maximum response against the marker signal or background noise Connect the frequency counter to Adjust VR so for a reading of exactly 19 7475 MHz Place the WIDTH switch ON Make sure that the WIDTH control is exactly in the 12 o clock position Adjust VR
137. RAL Before connecting the DC power cable to the transceiver check the battery voltage with the engine running battery charging If the voltage exceeds 15 volts DC the vehicle voltage regulator should be adjusted so as to limit the highest charging rate to less than 15 volts As well do not operate the transceiver if the DC supply voltage is less than 12 volts The transceiver should always be turned off when the car is started to prevent voltage transients from damaging the power supply components ANTENNA CONSIDERATIONS The FT 101ZD is designed for use with an antenna system presenting a 50 75 ohm resistive load at the antenna jack While the transmitter output circuitry is designed for uniform response within this impedance range significant departures from the 50 75 ohm specification will result in serious ly degraded transceiver performance and may result in damage to the final amplifier tubes If an open wire feedline is used or if the input impedance of the antenna system presents a higher or lower impedance than specified some sort of antenna tuner must be used to provide the proper impedance for the transceiver See your Yaesu dealer for details of the FC 901 antenna coupler For mobile operation most of the commercially available antennas will provide satisfactory results if care is taken to tune the antenna for minimum SWR The outer conductor of the coaxial cable should be securely grounded to the automobi
138. TER 1001 V18K3 2 10 os QIQ dO Oro tw K02173100 Ceramic SOWV CH 10 pF 02179012 d 30 pF C1204 K02175820 82 pF OIJ m 2 21 tn ONE 4 his aaa REPAIR PARTS r o 7 f gt Dipped mica SOOWV 390 pE USE AE T 101202 50 USE TC1206 TC 1204 1205 K91000016 50 32 50 pl 5 C 1044 1405 BIPY 40 pl Pf 1402 1403 B2PY 100 pl L1201 Trap 220545 aa _ _ es 02 ee p n ipM EN RAUM TRIMMER CAPACITOR Q BAND WIDTH CONTROL UNIT Description B W CONT unit with components P C Board a TRIMMER BOARD EIE 81970 E0001970 ata CAPAGHOR 9 30176271 Dipped mica SOWY K30176391 u 390 pF K30176621 EU 620 pF Parts No 0019720 0001972 G2090060 GD4 203 SRD C1303 C1306 C1302 C1301 C1305 C1304 m RESISTOR J00245152 Carbon film 1 4W VJ 1 5k2 K 30209003 1500 pF K02173080 Ceramic 50WV CH 8 pF 1501 2175680 DE 68 pF POTENTIOMETER V10K8 1 2 5k QB p MC VR1501 K91000032 B2PY 100 pF K91000052 B4PY 220 pF K91000033 B7PY 420 pF 91000012 ECV IZW 10 32 10 pF K91000016 E 50x 32 50 pF 1501 INDUCTOR L0020261 Trap coil 220261 Fo
139. White Red 5V p Black OF COUNTER AND DISPLAY UNITS 8 DO NOT REMOVE REMOVE 27 4 q x P 2 L E S Orange 13V 1 M CN TOP covERJ BOTTOM COVER Figure 22 4 Figure 24 3 77 SERVICING If servicing of the counter or display unit is required some caution is required as the physical fit of the two units is quite precise However the process is not difficult if you follow the directions presented herein Remove screws A B and C as shown in Figure 22 Be careful not to remove the two screws on the top rear of the cover Now remove the top cover PB 1980 and 1979 are stacked within the enclosure The display module is held in place with two F joints while the two circuit boards are held together by plug D and socket E When replacing LED digits note that the top two pins on each row of the socket are not used be careful to align the LED correctly The bottom cover is held in simply by a snap fit To remove PB 1980 refer to Figure 23 and insert a small screwdriver in the oblong hole in the rear of the enclosure Carefully pry plug D away from socket E and then PB 1980 will be free for servicing The color codes for the external access wiring are shown in Figure24 PIN I lt gt 4 aN HP5082 7623 Provided by http www yaesu museum com Downloaded by Amateur Radio Dir
140. Y Tel 01844 351694 Fax 01844 352554 29 28OS COSO 62972806 vOSQ u X ss s eee o Ko Q s lt Q s s s eee s ncn i a Email enquiries mauritron c0 uk r For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor 3 75 lt eee 5 s SERVICING COUNTER UNIT PARTS LAYOUT Early model Before Prod 15 3935272999999 REL ELEY 8 8 la oa EU ed z _ j z 4 P 4 3 I I 1 1980 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk EE 4 Wane Qo n 0 j Z 000000000 Qi eO 3 Viewed from component side Viewed from solder side 4 Qai rasaaa PELL 3E ik Wes ele e e e 4 272 A s gt e e 060 9049 05 2 27 2 ee ee Viewed from solder side PB 19 78 Viewed from component side 3 76 REMOVAL REMOVE we Sy lt 4 IX
141. ________ F1 5 100 117 as 90000004 200 234 poa ped 4 woo Fi sr 2 0190035 FS 000000 ESR E486R20 ae Hd A ans G Pe Sus upam usai ae s a SAAC TSS S E 9100002 01000033 ss A s MN aT MEE meae 9000010 terminal 1541 _ rr um 1 7777770 T 6000042 Terminal ML3182 _ 20P nemi Q6000004 Terminal board 112500 _ Heure 240128 7 n3QOD ___ m een gol cum Loc per o ME Ka saevo S sm 7 10809 TENE Moss ACMF P0090047 QS DB6 ML I 4 6 td M Ame REPAIR PARTS 1 B BOARD C102 108 K00175101 Ceramic SOWV SL 100 1390 720001390 Boa 103 106 K13170103 5 0 01 uF 62090060 GD 3045RD uona 7 5 B7 5 Jens 40120106 Eleerrolytie I6WV TT RF UNIT MEN C0019600 RF unit with components al Symbol No lt m O gt gt 2 O 2 Pars No C0019600 2519604
142. ae C1009 Wrapping terminal C C1011 40240336 05000004 Test point D C1012 1001 1004 40270106 450WV 10 uF C1007 1008 K40260226 i 350WV 22 uF Q5000011 Wrapping terminal C RECT B UNIT Parts Description RECT B unit with components Board Symbol No PB 1968B eree i TRANSISTOR 01003 254639 CAPACITOR UNIT G3107330 2SA733 Symbol No Description Q1002 28C372Y CAPACITOR unit with components PB 1969A Board _ QUEM bed 01004 1005 G2015550 RESISTOR 1008 1011 R1101 1102 Carbon composition 1 2W 470kQ 1012 21006 1007 G2090001 10D1 CAPACITOR C1101 1102 K43270003 Electrolytic 500WV 200 CE 62LW 21001 G2090081 1 12 RESISTOR R1021 100245102 Carbon film 1 4W VJ KQ R1011 1016 J00245472 4 7 1020 1013 1015 5 1017 1019 22 R1012 i 56 kQ Metallic film 1W 5 6 R1022 ENS 39 Q R1005 2W 390 Q TRIMMER A UNIT Symbol No Description C0019700 TRIMMER A unit with components PB 1970 P C Board SENE BEEN CAPACITOR Dipped mica SOWV 330 pF K30176391 K30176391 390 pF C1202 3 650 C1207 a z 1000 pF 1500 pF ts ts 10 kQ 12 KQ R 1006 470 0 1008 2 2 R1007 3 3 R1009 47 R1023 Carbon composition GK 470 aa POTENTIOME
143. anel digital display The output from the LSI is fed to the display The output from pins 24 through 30 is delivered to segment drivers Q2313 Q2319 28A952L and The premix signal as shown in Table 4 from the digit drivers 2306 11 2SA952L through a LOCAL unit is amplified by Qo3o 3SK73 The dynamic drive configuration Display is performed amplified signal is further amplified by Q2303 D2201 D2206 5082 7623 seven segment 2SC1674 and delivered to the 151 counter chip light emitting diodes Q2312 MSM9520RS A portion of the output H85082 762316 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 01844 352554 Email enquiries Q mauritron co uk QOt 3SKT3 CO _ o00 P Fin Yai JV R28 Cents 006 ne eee FM c2 i 204 8 3 s ik weer 605050509 CON CD 020202 05 ICDC 6569 54547 56 02 5 6K 2 22 25 18156 704 24 e Q ae of gt 5 6K 13 555 gt 5 2 gt ise 1 45 u i am AER gt EY LJ d 929571 20 had uPCTBOSH m SPA SA orl by cya 7 bod gt I o3 NIT 2086 23
144. ange PREMIX LOCAL UNIT PB 1711 before Prod 17 Crystal oscillators Qeoi Qeio 28C372Y generate the premix local signal at the frequencies shown in Table 3 Diode switches Deo Deio 151555 select the proper local signal for the band in use The local signal is then delivered to the PREMIX UNIT rc gt gt aua gt gt gt gt 1965 PREMIX LOCAL 6 x e _ elo ct NS ne x 81 18 Shy zf Ia x 79 esc QOI Qt 2SC372Y x1 DO 011 188585 11 eum EE ee TECHNICAL NOTES PREMIX UNIT PB 1962 before Prod 17 The premix signal is produced at Q303 SN76514N double balanced mixer where the premix local signal from is mixed with the VFO or crystal controlled 5 MHz signal The premix output frequencies are shown in Table 3 The premix signal is passed through bandpass filter Tso T314 and amplified by 2SKI9GR and 28 373 The amplified signal is then fed to the RF UNIT where the signal is further amplified by Qio7 for delivery to the transmitter and receiver mixers XCO Frequency Frequency 160m X601 15 9875MHz 10 4875 10 9875MHz 17 9875MHz PREMIX OUT 80m 12 4875 12 9875MHz 21 4875MHz 15 9875 16 4875MHz 2
145. arly mode Before Prod 16 O o A 2 650P S 3 Overa H hy IOOP 330P Viewed from component side TCO4 SOP CO4 4 82 5 5 201 OZ 6M el CO5 C1208 6 20 C 6 IOP Viewed from solder side r s s TRIMMER BOARD PB 19708 Early model Before Prod 16 B 1 w 420 160m COI 1500P 400P TCO2 220P 80m 2 620P TCO3 40m CO3 2TOP TCO4 5 2 20m 04 68 TCO5 5 O 15m TCO6 OP E 05 LOI 9 1 Viewed from solder side pg 970 TRIMMER B gt 3 70 B L SERVICING TRIMMER C BOARD PB 1092 420P 160 1500 co 400P 80m 2 650 TCO3 C 40m 270P TCO4 20m 5 82P 5 40P 215 IOP PB IO92 TRIMMER C UNIT NO 14 J Viewed from solder side J a J eee see X For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Te
146. ator transformer 220017 1 ea T611 MODIFICATION PROCEDURE 1 Refer to Figures 8 and 9 and install the above parts on PB 1962 and PB 1965 Refer to FigurelO and locate the bandswitch wafers S1B and SIC Cut the lead from AUX to COMMON and re install the lead so as to run from AUX to the post corresponding to column 6 of Table 6 BAND For example for 2 0 2 5 MHz operation the lead goes from AUX to 160 Do this on both wafers S1B and SIC Refer to Figure 4 and install the jumper wire shown between the AUX terminal and the terminal of 52 ND column in Table 6 on bandswitch wafer S2D Note that this is a double wafer S2C is the side facing the front of the transceiver while S2D is the rear face of this wafer 2 3 Normally no change in the tank coil tap will be required as inspection of Table 6 will verify However if harmonics or other non satisfactory transmitter performance charac teristics result use linear interpolation of the values in Table 6 Tank Coil Tap column 4 Note that this will affect the performance in the original amateur band so beware ALIGNMENT AFTER MODIFICATION 1 Connect an RF VTVM to 1 of MJ3 Adjust Te11 for maximum indication on the Nom 300 mV Temporarily remove the plug from output jack J3o1 of the PREMIX Unit PB 1962 Connect the RF to J301 Set the VFO to 250 band center and peak the bandpass filter coils
147. band signal by removal of the unwanted sideband The signal is then fed to buffer amplifier Q402 2SK19GR When the RF speech processor 15 OFF diode switches D4 and 181555 feed the IF signal to IF amplifier 3SK51 03 When the RF speech processor is ON the SSB signal is amplified by buffer amplifier Q402 2SK19GR and further amplified by limiter TA7060P where signals that exceed the preset clipping level are sliced out This highly clipped SSB signal is amplified by buffer amplifier 2SC372Y and passed through a selective filter which removes RF harmonics that result from signal clipping The signal is then fed to IF amplifier and sub sequently delivered to the RF UNIT The front panel COMP LEVEL control VR controls the voltage at gate 2 of thus setting the processor level The return of the grid circuit of the final amplifier tubes is fed to 2SKI9BL which produces ALC voltage This voltage is fed to gate of 2 13 TECHNICAL NOTES controlling the gain of this stage When the RF processor is off ALC voltage is also fed to gate of Qao 254564 amplifies the ALC voltage for indication on the front panel meter RF UNIT PB 1960 Early model before Prod 17 The IF signal is fed through to the transmit mixer consisting of parallel connected and 3SK40M where the IF signal at gate is mixed with the l
148. ches This difficulty is usually proceded by one of the above two defects ELECTRICAL DEFECTS Typical electrical defects encountered are a b 4 3 Part s failure s caused by aging Failures caused by improper application of supply voltage or by voltage spikes An improper fuse in use could cause extensive damage to be sustained Improper operation e g transistors without load this usually points to failure elsewhere in addition to the damaged transistor of IC Loose connections at the power connector or elsewhere caused by cold solder joints etc OTHERS Among the miscellaneous types of failures or difficulties encountered are a b Antenna troubles poor connectors use of cheap coax not made to withstand weather and sabotage by neighbors nail driven through coax etc Cockpit error including mislabeled coax lines to coax switch or attempt to use transceiver on fre quencies other than those it was designed for Murphy s Law use of a non Yaesu microphone with different connections for example See pagel 11 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk 3 38 sie pis SERVICING TYPICAL PART FAILURES CAUSES AND SYMPTOMS Semiconductors High supply voltage Short or open circuit IC FET TR Open circuit Output decreases to 1
149. converter installation on the rear panel and install the 9 pin connector supplied with the kit on the chassis cutout as shown in Figure 5 Remove the nylon clamp binding the 7 wires and slip off the vinyl tube from the wires Then insert each of the wires except the orange wire into the short transparent vinyl tube supplied with the kit for insulation Solder the 7 wires to the appropriate pins of the connector as shown in Figure 6 Install the DC DC converter module as shown in Figure 8 Use the four screws supplied with the kit Do not force the plug into the socket as the connection should be smooth yet solid Check the DC cable fuse socket located in the positive red lead to be certain that a 20 amp fuse is installed NUT M3 Sw 3 Q Swi3 2 4 3 Figure 5 6 7 8 When making connections to the battery be absolutely certain that the proper polarity is observed The RED lead should be connected to the POSITIVE battery terminal and the BLACK lead should be connected to the NEGATIVE terminal OUR WARRANTY DOES NOT COVER DAMAGE CAUSED BY REVERSED POLARITY CONNECTIONS Before connecting the DC power cable to the transceiver check the automobile voltage regulator level with the engine running bat tery charging The maximum charging rate should be 15 volts or less If the voltage is higher than this level please adjust the voltage regulator for a maximum of 15
150. d at 8 volts by Q uPC14308 for delivery to the counter AF and other units The 6 volt supply for the VFO is provided through zener diode Doos WZ061 while the 5 volt supply for the TTL integrated circuits is provided by 781 05 The power amplifier plate voltage of 800 volts is supplied from the bridge controlled doubler locat ed the RECT A UNIT and consisting of Doo 10010 AC 190 volts is rectified by 10010 produc ing 210 volts for the screen grid supply of the power amplifier tubes The screen grid voltage for the driver tube is obtained by rectifying 250 volts AC at 10010 producing 300 volts This voltage is dropped to 180 volts by a resistor for delivery to the driver tube screen grid The 120 volt AC power from the transformer secondary winding is rectified by 10010 in order to obtain 140 volts for the driver and final amplifier tube grid bias Email enquiries mauritron co uk u 000 300V 5 2 8 am 2 ACI20VO HEATER av 8v GND GND DC CONT DC CONT 2 900V R903 470K 2w GNO R904 470K 1 24 en gt gt ee 1967 HI LOW VOLTAGE UNIT For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844
151. ective 105 106 Or Qaos Defective 502 No power output LSB only 2 Poor TX Defective X503 No power output on USB only Defective RLs01 0502 D2402 No vox operation defective or grounded MIC or PATCH jack Defective Qsos Qso4 or 0512 No power output on both USB LSB No power output on Defective Xso04 Q401 D2402 CW TUNE Defective mode switch 1001 and associated circuit Defective Dsoe if carrier hangs up CW keying No modulation on AM Defective 2401 2407 2401 2401 3 Abnormal meter Cannot set ALC meter Defective C1016 Defective Q405 VRao1 Defective meter switch RLi 3 43 SERVICING Defective 12BY 7A ALC line shorted to ground Defective D 1006 D 1007 Driver IF stages require realignment ALC meter does not function X gt Defective 1706 or meter switch Defective RL Power output OK no IC meter indication Improper setting of VRs Defective 2 Cso 57 Di VRs or mode switch Power output OK PO meter does not function Failure in MIC or PTT line Loose MIC jack or plug connection a TX OK in MOX position No changeover from RX to TX Defective Defective RL D No TX in MOX position If no CW semi break in check Qsos 0504 Qs 12 VOX inoperative PTT line grounded Def
152. ective Qs12 Defective Qsos 0504 No return to RX from TX Insufficient bias voltage on 6146B Fuse blows on RX transmit Neutralization of final tubes required Defective 16 Cis Cis C 1605 RX 12 line shorted to TX 12V TX 8V line only on TX OK on receive TX self oscillation Processor switch defective Defective XF403 Defective 0402 0404 a Low or output with processor on RF processor trouble For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 01844 352554 Email enquiries mauritron co uk 3 44 SERVICING COMMON CIRCUITS 1 Counter circuit a Digital display does Defective Q2310 not work 5 V line in Counter Unit grounded Defective display LED Defective 2208 2213 Defective 2204 2245 VEO input not connected or is grounded Defective Q23o1 Q2304 02309 Defective 655 36 kHz crystal Defective Q2305 Six digits to the right read below LSB 91 014 0 USB 91 011 0 CW 91 011 7 Defective 655 36 MHz crystal Low PREMIX input 80 120 mV RMS OK Display unstable all digits working OK Defective BAND switch SIA Open R22 Shorted C 53 Defective a No oscillation all bands 2
153. ective band switch Defective 1201 160 1 1206 10m C1201 160 m 1206 10 m Defective 61468 R1013 Ri 703 1701 Defective 1 1701 Defective Rio14 R1017 R1601 1602 C1015 Defective 1002 1 1968 TX 12 line shorted to RX 12 V line Check at each board TX RX switching diodes and switches SERVICING Defective NB MARK switch Check voltage at pin 4 of 7504 in PB 1964 Should be 8 volts nominally Defective 501 Defective 606 0609 and Qe10 5 Marker inoperative a RX no marker signal heard a ta 4 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01844 352554 gt Email enquiries mauritron co uk SERVICING TRANSMITTER a IC OK but no power Defective 12 Lo output Shorted Defective Ces Low bands only Defective Cs Defective RL 1 No power output Cold solder joint between band switch and tank coil Defective band switch IC OK but no output on a particular band Defective 6146B ACC plug not correctly wired or improperly seated No screen voltage at 6146B because of defective band switch No IC indication Defective 12 7 No screen voltage because of defective R 1603 Idling IC OK but no drive 009 1007 1009 Def
154. ectory SERVICING OV 69 22921 QVAET Aw MOG Sfo 58 v gt 28 G 9 Cr wm Jo vo os 7 ot 501 vo 388 32 679 fo o ura TIME o fon foe OV OV 525 MI AZZ 56 596 i 84 5 352 5 s 79 01 Od 3000014012 4 3H00GI Ot I 300061 1070 49 FO a ZA 3400 90419 440051 IO I2 200061 IOSIS 04 4 2 g S Q eT O 00 0 0070 n e o e 9 k LER VSlLI 8d E 025 g T gt o let INV le o ADY 4 a 9 07 Of doi X I 200 0000000000 lg EE it I 1 9 INV L N 18 o L U 82S o 2 i 2 i _______ AZ XL AOO8 IOO O JOLOW 21 3 78 SERVICING DRIVER BOARD 1714 el K 4 _ ca 4 i iewed from solder side Viewed from component side Vi FINAL BOARD PB 171 5A 4 71 1715 E qEB C1701 4 _ 89 i For Service Manuals Contact uc e MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352554 Email enquiries
155. ed to control the gain of and 05 When impulse type noise is received and 2 04 1N60 rectify the IF signal producing DC voltage which controls the NB switch Q411 MPS A13 Noise pulses have a very short duration but high amplitude Because of the very slow time constant of the discharge path AGC voltage is not induced by these short duration pulses There fore and operate at full gain providing maximum voltage to the base of When pulse is received biases D414 to block the signal path momentarily When a desired signal and a noise pulse are received simultaneously the blanking action is not impaired because the relative amplitude difference between the desired signal and the noise pulse is still high The front panel noise blanker level control varies the DC voltage applied to the base of 5 J200 c30 00i R23 15 TECHNICAL NOTES AF UNIT PB 1964 The IF signal from 2 is fed through to the ring demodulator consisting of 1502 1505 181007 where the IF signal is demodulated into audio using the carrier signal delivered from 2SC1815Y The carrier signal is generated by oscillator 25 19 and it oscillates at one of the following frequencies USB CW RX 8989 KHz LSB 8986 KHz CW TX 8988 3 KHz The audio signal is then amplified by audio amplifiers 28C1000GR and Qoo uP
156. en difficulties are almost always caused by component failure rather than misalignment Service work should only be performed by ex perienced personnel using the proper test equip ment EQUIPMENT REQUIRED 1 RF Signal Generator Hewlett Packard Model 606A or equivalent with one volt output at 50 ohms and frequency coverage to 30 MHz 2 Vacuum Tube Voltmeter VTVM Hewlett Packard Model 410B or equivalent with an probe good to 40 MHz Dummy Load Yaesu Model 150 or equivalent with 50 ohm non reactive load impedance rated to 150 watts average power AF Signal Generator Hewlett Packard Model 200 or equivalent A general coverage receiver covering 3 to 30 MHz with a 100 kHz crystal calibrator A frequency counter Yaesu Model YC 500 or equivalent with resolution to 0 01 kHz and frequency coverage to 30 MHz An oscilloscope Hewlett Packard Model 1740A or equivalent 3 4 5 6 7 AF UNIT ALIGNMENT VOX Circuit A Antitrip level setting Tune in a signal on the FT 101ZD receiver and adjust the AF GAIN control for a normal listening level Position the microphone near the speaker with the MODE switch in the SSB mode Increase the VOX GAIN control on the front panel until the speaker output causes the VOX relay to switch the trans ceiver to transmit Set the ANTITRIP control VR located on the rear apron to the point that will just prevent the speaker output from tripping
157. en pin 5 of Pi and PB 1849 Reverse these wires by unsoldering them from the circuit boards and installing the green wire to PB 1848 the white green wire to PB 1 849 The corrected schematic is shown in Figure 16 Locate the CLARIFIER potentiometer inside the front panel of the case Refer to Figure 17 and locate the yellow and green wires as well as the 1 5 K ohm resistor Rewire the connec tions as shown in Figure 18 for proper CLARI FIER operation Modification is now com plete For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4 Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk Figure 14 SERVICING White Red White Yellow BEFORE MODIFICATION Figure 15 White Green s s gt eee ee pam weer ele PB 1849 MODIFICATION Figure 16 AFTER BEFORE MODIFICATION MODIFICATION Figure 17 Figure 18 SERVICING RECTIFIER B UNIT MODIFICATIONS In order to provide additional protection for the power supply circuitry several changes were adopted in the RECTIFIER B Unit circuit At A 00 pom in the schematics is the circuit used for production lots 1 through 4 At B is the circuit modification used for production lots 5 and 6 The modification procedure is described below RIOO2 RIOO 470k 2w 470k V2w 1
158. enquiries maunitron co 484 486 C0019640 AF unit with components 490 491 493 0001964 Board 494 497 d be D L 402 403 407 13170473 DATAE 408 410 412 cree RENE 414 416 418 FET TRANSISTOR 422 425 421 aso ____ 1 429 436 438 441 444 447 sa 6109000 457 458 462 05027 61090086 463 468 471 0505 Q505 G1090120 G3800190G 498 K14179003 G3105641 2SA564A 473 474 495 3 461 467 50177103 8 632303730 Ks0177223 0024F _ 0507 G3310000G 409 439 456 K50177473 0 047 uF 3313830 0509 510 513 63318150 516 466 480 481 Tuum 39V C479 450 476 496 40120106 Electrolytic L6WV 10 uF j sos _ G2090029 ee 25 1000 Ge GB 181007 1 psor so 62015550 si 1401 408 410 1 1190016 FL 5H 101K 100 uH 512 517 519 522 1411 412 L1190038 4 10 REPAIR PARTS 30176511 Dipped 59 W V 510 pl K02173100 G 2090001 0100260 HC 6 W_ 3200 khz 2210026 C510 532 534 K02175101 7502 0100421 18 0 8986 kHz 2210042 1 555 566 ees 7o 07 7 Hope H0100423 89883 kHz 2100423 C558 559 00119020
159. er operates at an input power of 180 watts Advanced features include digital plus analog frequency display continuously variable IF band width 300 Hz 2 4 kHz a superb noise blanker with threshold adjustment and an effective RF speech processor The receiver boasts excellent dynamic range despite its high sensitivity for reliable operation in the presence of strong signals Built into every FT 101ZD are VOX semi break in CW with sidetone a 25 kHz crystal calibrator selectable AGC and a 10 dB 20 dB RF attenuator in the incoming signal path The FT 101ZD has been engineered for use Controls and switches are laid out in an efficient and logical manner so you won t have to fumble for a switch or knob when you need it quickly And Yaesu designers have now made it possible for you to switch sidebands without recalibrating the display option 5 1 All circuits except the transmitter driver and final amplifier stages are solid state Solid state devices provide extremely high reliability and high com ponent density along with low power drain The FT 101ZD may be operated from a variety of AC voltages from 100 to 234 volts A DC DC converter providing operation from a 13 5 VDC power source is an available option For the economy FT 101Z the counter unit is an available option providing digital display capability should you want to upgrade your transceiver at a later date Optional equipment on both models FT 1
160. es the necessary buffering between the IF and AGC circuits The AGC voltage is amplified by 28C372Y and applied to gate 2 of the RF and IF amplifiers to control the gain of these stages The AGC voltage is also amplified by Q419 2SK19GR for S meter indica tion O 004 2SKI9GR e 2SC1815Y aa sa eh ca e w x s s n m eee TECHNICAL NOTES For use with the FV 901DM scanning VFO or other optional equipment the AGC voltage is fed through buffer Q425 2SK19GR and fed to the AGC OUT terminal on the EXT VFO jack located on the rear panel the output signal from Q416 is amplified by Qzaos 2SC380Y and passed to the AM detector D2406 1360 The resulting audio signal is amplified by 28C1815Y and delivered to the final audio stage er 89 86 H 1 4458 c 89825 89883 8989 USB 10 76 Ct tott 558 Cw SSB CW Filters Width 1 5 Width Width Control Action ee eae ee gt eee 905 25 3 C28 0 01 PB 2040 UNIT NO 24 J TECHNICAL NOTES f a ET vs Jj 9 gt 3 5 EP BE 538 s 5 83 55 98 55 45 9 Om On5 gt 28 o gt 2 2 E x x eee s NENNEN EL 25
161. eur bands will be met during operation on a non standard band Of special note are those bands containing and immediately adjacent to the IF and VFO frequencies The modification process begins with the insertion of the required parts on the PREMIX and PREMIX LOCAL circuit boards as the AUX band parts were not factory installed Then the necessary wiring changes are performed and then the new band is aligned for peak performance on transmit and receive PARTS NEEDED For PREMIX UNIT PB 1962 Silicon diodes type 181555 2 ea 1315 19316 Carbon film resistor 2 2 K ohms watt ea R319 Disc ceramic capacitors 0 01 uF 50 WV 3 ea C344 C345 C347 Disc ceramic capacitor 50 WV 1 ea C346 see Table 6 on page 3 9 Micro inductors 270 2 La2o L321 Bandpass coil see Table 6 on page 3 9 for desired BPF coil among T301 1314 for T316 T317 For PREMIX LOCAL XTAL UNIT PB 1965 Transistor type 28C372Y 1 ea Q611 Silicon diode type 181555 1 ea D611 Carbon film resistor 56K ohms watt 1 ea 44 Carbon film resistor 18 K ohms watt 1 ea Reas 28 MHz 33 K Carbon film resistor ohm watt 1 Reae Carbon film resistor 100 ohms watt 1 ea R647 Disc ceramic capacitors 0 01 uF 50 WV 3 ea 42 4 3 7 Disc ceramic capacitor 50 WV ea Ce4s see Table 6 Local crystal 1 ea Xe11 see Table 6 Oscill
162. explained by example For a frequency of 3 500 MHz LSB the premix local frequency is 12 486 MHz The LSB preset code is 91 014 0 12 486 91 0140 0 103 500 The 1 digit on the left hand side is dropped overflow and the 0 preceeding the 3 causes a blanking signal to be sent to the 10 MHz digit The result is a frequency of 3 500 MHz and this number is displayed For USB the preset number is 91 011 0 For a frequency of 14 000 MHz USB the manipulation is as follows 91 011 22 989 Premix freq 114 000 The first digit is the overflow digit anu the remaining digits are displayed Note that the second digit from the left is not zero so no blank ing signal is sent to the 10 MHz digit For a CW or AM frequency of 21 000 MHz the pre mix frequency is 29 9883 and the preset frequency is 91 011 7 The manipulation is 91 011 7 29 9883 121 0000 The first digit is dropped and the remaining digits are displayed The preset frequencies are programmed by Q2307 and 54 and diode matrix 366 181555 Please refer to Table 5 for definition of the premix frequencies for the various bands 5 volt supply is regulated by uPC 14305 for the TTL circuitry The DIM control controls the emitter collector voltage at 2SA496Y to control the brightness of the digital display and lamps Preset Number Table 4 For Service Manuals Contact MAURITRON TECHNICAL SERVI
163. final amplifier pi network to match the feedpoint impedance of the load 13 PLATE This control tunes the plate circuit of the final amplifier 14 MAIN TUNING KNOB Rotation of this knob selects the operating fre quency in conjunction with the setting of the bandswitch One revolution of the dial produces a frequency change of approximately 17 kHz 15 DIGITAL DISPLAY The digital display reads out the operating fre quency with resolution to 100 Hz The display unit is built into the FT 101ZD and is an available option for the FT 101Z 16 ANALOG DIAL The analog dial allows readout of the operating frequency to better than 1 kHz The combination of the precision dial mechanism and drive unit provides zero backlash at slow tuning rates 17 DIM GENERAL 20 DELAY This control sets the delay time for the VOX relay For voice actuated SSB or semi break in CW the operator may select the delay time most suitable for his or her operating habits 21 VOX GAIN The threshold level for the VOX voice operated relay system can be varied using this control In the PTT position PTT push to talk control is provided for relay control via the microphone PTT switch or footswitch 22 DRIVE This control sets the carrier level for CW AM and tuning purposes When the RF processor is ON this control varies the RF output on SSB as well 23 MIC GAIN This control sets the output level of the micro
164. for maximum deflection on the VTVM 100 150 mV Now check the response from 000 on the VFO to 500 If the response is not flat within 3 dB across the band retune the bandpass filter coils for a somewhat staggered response 2 SERVICING PREMIX UNIT PB 962 PREMIX LOCAL XTAL UNIT PB 965 Figure 8 Figure 9 S2D mE Example for 2 0 2 5 MHz wiring me Example for 2 0 2 5 MHz wiring Tux So gt 2 9 9 S2D COM Jo C SUM For Service Manuals Contact o MAURITRON TECHNICAL SERVICES BO 8 Cherry Tree Rd Chinnor Oxon 9 4QY 2 Tel 01844 351694 Fax 01844 352554 15 a 20 40 Email enquiries mauritron co uk Sac 520 Figure 11 Figure 12 3 8 SERVICING 1017 AUX BAND PREMIX OUT FREQ MHz BAND T301 302 10 4875 10 9875 7303 34 10 9875 11 4875 11 4875 11 9875 11 9875 12 4875 80 12 4875 12 9875 12 9875 13 4875 13 4875 13 9875 FREQ MHz XTAL MHz NUMBER mo 16 4875 16 985 7 4875 35 40 17 9875 270 x 5 0 5 5 19 4875 6 0 6 5 20 4875 ENSE 305 306 6 5 7 0 20 9875 7 0 7 5 21 4875 180 CM GNE UR ERR Ies MIR EON AN I MSN s eC 10 0 10 5 24 4875 18 9875 19
165. herry Tree Rd Chinnor FM UNIT OPTION 2440 2445 mee Description 2449 2455 mail enquiries mauritron co uk 60022180 P C B with components C2425 2427 PB2218 Printed Circuit Board 2430 2433 13170473 0 047 uF 2218 0002218 2439 ce N els T er es o Ti C2451 K50177102 Mylar 0 001 C2407 50177222 0 0022 uF LAC FET amp TRANSISTOR 2435 2438 2447 2448 C2402 50177473 T 0 047 Q2503 33053508 25 535 2414 K50177224 i 0 22uF 02502 2504 25 9450 2452 K40140475 25WV 4 7 uF C2406 2408 40120106 16WV 10 uF C2410 2415 50177103 I 0 01 uF G1090072 IC uPCS77H Q2501 G3801250 FET 2SK125 02516 G4800510C 35 51 03 2449 02517 G3107330Q TR 2547330 G3309450Q C2405 2450 40170105 Electrolytic luF 2505 2507 2453 2515 2518 2409 2424 640020 478 D2503 2506 G2001880F 15188 i 2454 P to C2403 M 100uF D2507 G2015550 181555 a 220uF 02508 2509 G2090027 15553 2512 2515 22511 G2090210 22510 G9090005 Varistor MV13 D2516 G2090035 RD6 8EB3 Al O nn REPAIR PARS 5 6 CRYSTAL H0100431A HC 18 U 8532 5 kHz H0100440A amp 8988 3 kHz R2504 2525 100245562 Carbon film 1 4W X2501 2526
166. ice Manuals Contact Op MAURITRON TECHNICAL SERVICES the following modification will eliminate this weak 8 Cherry Tree Rd Chinnor spur in analog versions Oxon OX9 4QY p Tel 01844 351694 Fax 01844 352554 Refer to the drawing below and install a new Email enquiries maunitron co uk 220 ohm watt resistor R320 on the PREMIX Unit as shown No further modification is required l P3OI 9302 LE C333 230 PREMIX UNIT PB 1962 8 a 9502 C333 Q x P ae R320 20 3 24 SERVICING AF UNIT CAPACITOR POLARITY CHECK In FT 101Z ZD transceivers bearing serial numbers from the first six production lots a mistake in the printing on the AF Unit caused several capacitors to be installed in reverse order for their intended purpose although they were correct according to the printing In many sets no serious deterioration in performance is noted at all however if you get a set for servicing which displays AF oscillation distortion or low output this may be a good place to check The reversed capacitors should be replaced with new ones installed in the proper position For Service Manuals Contact T MAURITRON Tree Chinnor 8 4QY 01844 01844 351694 Fax 0 enqui es mau tron g9 551 C550 C557 2 2uF C568 ECHNICAL SERVICES The capacitors affected are Cso2 470 uF 22
167. input transformer T to pin 3 of the RF UNIT RF UNIT PB 1960 Early model before Prod 17 The incoming signal is amplified by the RF amplifier 3SK51 03 dual gate MOSFET used in a grounded source configuration This transistor has superior immunity from intermodula tion distortion The amplified signal is then fed through a source follower Qio2 J310 to the balanced mixer consisting of and 2SK19GR where the input signal is heterodyned with the local oscillator signal The local signal is delivered from buffer amplifier 2N4427 and the resulting IF signal of 8 9875 MHz is fed through to Jio The input and output of the RF amplifier are permeability tuned circuits resulting in high sensi tivity and excellent rejection of unwanted out of band signals IF UNIT PB 1963 The IF signal at pin 9 of Jao3 15 amplified by 1310 and passed through a monolithic filter 4 which has a 10 kHz bandwidth The monolythic filter provides early protection from IMD while providing a wide bandwidth point for noise blanking The IF signal is then fed to noise blanker gate D414 D412 181007 which functions as an ON OFF switch controlled by noise blanker driver Qa MPSA13 gt gt c gt RX RF 35 51 03 A is 5 P b OOP 2 1 5
168. ior to commencing transmission eee ee tuning As well be certain that the ACC plug is inserted into the rear apron ACC jack Without this plug there will be no power applied to the tube heaters Heater voltage is applied through pins 1 and 2 of the accessory socket 1 Preset the controls and switches as follows MODE TUNE DRIVE 2 Fully counterclockwise DELAY 4 5 Fully counterclockwise MIC GAIN Fully counterclockwise COMP LEVEL Fully counterclockwise HEATER ON PROC at OFF PO IC ALC IC PLATE E Set to desired band seg ment LOADING 0 PRESELECT Peaked on receive for TX CLARIFIER maximum response OFF button not pushed Turn the HEATER switch ON and wait minute for the tube heaters to warm up 2 Set the VOX GAIN switch to the MOX posi tion Observe the reading on the IC meter it should read 50 mA with no drive applied If it is not adjust the PB 1968 BIAS control for a resting current of 50 mA on the IC meter Refer to the BIAS Adjustment in Page 41 Be certain that the DRIVE control is fully counterclockwise for this adjustment 3 Set the VOX GAIN switch to MOX Advance the DRIVE control for a reading of 150 mA 4 1 17 GENERAL 5 Peak the PRESELECT control for a maximum meter reading If the meter reading exceeds 150 mA reduce the setting of the DRIVE control Rotate the PLATE control for
169. ir circulation around the transceiver If the trans ceiver must be placed on the car seat set it on a board or other rigid object in order to provide the necessary air circulation and to avoid possible heat damage to the uphoulstery A special mobile mounting bracket is available from your YAESU dealer The DC supply should be capable of providing 20 amps on voice peaks 14 amps continuous The HEATER switch may be turned off during long periods of reception for energy conservation For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiriles mauritron co uk arzo BLACK ORANGE FUSE 20A Em 3 10 COOLING FAN INSTALLATION OPTION The FT 101ZD cooling fan may be used with other models of Yaesu equipment Installation is easily accomplished in minutes Hold the fan up to the rear panel in its proper location Determine the proper length of the two wire power lead to the motor Solder the leads to the 2 pin plug supplied with the fan The 4 pin plug is not needed for FT 101ZD installation Install the fan onto the rear panel of the trans ceiver as shown in the drawing Insert the power lead from the fan into the fan socket on the rear panel DC DC CONVERTER EXPLODED VIEW 7 7 NN MA ef 22 9 72 a 4 LES EMITTER e COLLECTOR A OL WIDE SPACE 3 11 Cooling fan
170. l 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk Provided by http www yaesu museum com Downloaded by Amateur Radio Directory 3 71 SERVICING LED UNIT PB 1974A SELECT SWITCH UNIT PB 1966C 1974 019 LED EXT 1 EXT TX EXT RX EXT VFO FIX FIX2 CATHODE Viewed from component side zu 4 ANODE LED Connection Viewed from solder side 3 72 e e x ws _ SERVICING BAND WIDTH CONTROL UNIT PB 1972 Early model Before Prod 23 x 14 VROI 4 7 J ee eee GND WIDTH VR OOWIDTH 8V WIDTH VR WIDTH CONT CATHODE Viewed from solder side ANODE LED Connection CLARIFIER UNIT PB 1 973 For Service Manuals Con act MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk CLAR 8 poem ee To gt gt gt 1 x mo 18 Ls 7k A y SiISTO 7 gt O O ais O 55 ome d D d b d b TX CLAR E os 470 98 PB 1973 CLARIFIER UNIT NOI8 _ Viewed from solder side 3 73 SERVICING LEVER SWITCH UNIT PB 1975A ROB x O O OFF 2
171. l calibrator is activated 28 POWER This is the main ON OFF switch for the trans ceiver Headphone and external speaker plug 29 HEATER With the HEATER switch on heater voltage is applied to the driver and final amplifier tubes This switch may be turned off during periods of RX when energy conservation is critical 30 PHONES This is a standard phone jack for use with headphones 31 MIC This is a 4 conductor jack for microphone and PTT input For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 6 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk Key plug PIN No 1 HEATER 2 HEATER 3 NC 4 NC 5 NC 6 NC 7 ALC 8 GNO 9 TX GND 10 RX GND 11 NC ACC plug CR Pin plug 5 4 i i REAR APRON 1 RF OUT RF output of 3 volts RMS is available at this jack for use with a transverter Output is from the driver stage 2 GND For best transceiver performance as well as protec tion from electrical shock a good ground connec tion should be made at this point using a heavy braided wire of the shortest length possible 3 RCV ANT This jack is switched in parallel with the ANT jack on receive for use with an external receiver 4 ANT Standard UHF connector for the antenna 5 AF OUT This is an audio output jack providing 200 mV of audio output for recording purposes Thi
172. le chassis at the antenna mount See your Yaesu dealer for details on the RSL series of mobile antennas Provided by http www yaesu museum com Downloaded by Amateur Radio Directory GENERAL OPERATION The tuning procedure for this transceiver is not complicated However care should be exercised when tuning so that peak performance of the equipment is secured The following paragraphs describe the procedure for receiver and transmitter tuning INITIAL CHECK Before connecting the transceiver to the power source be certain that the voltage specification marked on the rear of the transceiver matches your local supply voltage and also confirm that a fuse of the proper rating is being used FREQUENCY SELECTION Frequency readout on the FT 101ZD is by digital as well as analog displays The FT 101Z uses analog display only The analog readout dial provides resolution to 1 kHz while the FT 101ZD digital display provides resolution to 100 Hz The digital display may be added to the 1012 as an option See your Yaesu dealer for details RECEIVE OPERATION 1 Preset the controls and switches as follows POWER OFF HEATER OFF Sees Switch pushed VOX GAIN PTT position RF Fully clockwise AF GAIN Adjust later for comfortable level BAND Desired band MODE Desired mode PRESELECT Desired band segment PAGE 2220 OFF AT T s suas OFF MARK NB OFF 4 APF NOTCH
173. ly Save the pack ing carton and foam packing material for possible use at a later date For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon 9 40 Tel 01844 351694 Fax 01844 352554 Email enquires mauritron co uk FUSE HOLDER BASE STATION INSTALLATION The FT 101ZD is designed for use in many areas of the world using supply voltages that may differ from your local supply voltage For this reason be absolutely certain that the voltage specification marked on the rear of the transceiver agrees with the local AC supply voltage THIS INSPECTION MUST BE MADE BEFORE CONNECTING THE AC POWER CORD TO THE REAR APRON OF THE TRANSCEIVER CAUTION PERMANENT DAMAGE WILL RESULT IF IM PROPER AC SUPPLY VOLTAGE IS APPLIED TO THE TRANSCEIVER OUR WARRANTY DOES NOT COVER DAMAGE CAUSED BY APPLICATION OF IMPROPER SUPPLY VOLT AGE DO NOT CONNECT THE AC POWER CORD TO A DC POWER SOURCE HOLOER Provided by http www yaesu museum com Downloaded by Amateur Radio Directory c v a The transceiver should be connected to a good earth ground The ground lead should be made of a heavy braided wire and should be connected to the GND terminal on the rear apron of the transceiver MOBILE INSTALLATION Note The DC DC converter described herein 1s optional equipment See your Yaesu dealer When the optional DC DC converter is installed the FT 101ZD will operate
174. mer primary connection chart When using the optional DC DC converter the DC supply is connected at this point DO NOT CONNECT THE AC POWER CORD TO A DC POWER SOURCE OUR WARRANTY DOES NOT COVER DAMAGE CAUSED BY SUCH IMPROPER POWER CON NECTIONS 16 TONE This control varies the CW sidetone output level 17 A TRIP This control varies the level of the VOX anti trip circuit PIN No 12V USB 8V VFO 6V T500kHz SHIFT LSB 8V TX EXT D VFO OUT XCVR VFO IN EXT VFO A For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352554 enquiries maunitron co uk TRANSCEIVER 18 PTT External control of the transceiver PTT push to talk system may be made at this jack for use with a footswitch etc 19 PATCH Microphone or phone patch input may be made at this jack Impedance is 500 ohms 20 EXT SP This is a miniature phone jack for speaker output When a plug is inserted into this jack the trans ceiver internal speaker will be cut off Impedance 15 4 16 ohms 21 DC DC CONVERTER OPTION The optional DC DC converter allows operation 1 from a 13 5 volt DC power source 22 COOLING FAN OPTION The optional cooling fan keeps the tubes at a saie operating temperature when they are used in a hot environment The 2 pin fan power jack supplies 100 volts to the fan
175. mp insert 1 lead each into the vinyl tube supplied with the counter kit and posi tion these leads out of the way of the VFO gears etc Install the orange optical filter on the inside of the front panel of the transceiver in the position formerly occupied by the analog display panel Be sure that it is correctly centered The filter is held in place by the double face tape included with the filter Replace the LED board with A screws In stall the support tower into the hole marked C in Fig 10 Install the Counter unit with the screw pre viously installed at for securing the counter module at point Use the two plastic screws supplied with the kit for secur ing at point B Connect the Molex plug into the board connector J2302 on the Counter unit if your transceiver bears a serial number smaller than XX159999 use the supplied con nector assembly for this connection The co 8 9 axial cable from the Counter unit is connected to point F in Fig 10 Remove the 820 Gray Red Brown resistor from the terminal strip marked in Figures 10 and 11 Close the transceiver No alignment of the unit is necessary Enlarged Part E Figure 11 wee LED BOARD Double tape Figure 12 FM UNIT INSTALLATION 1 Remove the top cover of the transceiver as shown in Figure 1 on page 3 5 2 Remove the two
176. nal VFO these switches determine which component will control the transmit receive or transceive frequency This switch when pressed shifts control of the transceive frequency to he external VFO with optional unit t3 This switch when pressed shifts control of the transmit frequency to the external VFO This switch when pressed shifts control of the receive frequency to the external VFO This switch selects control of the transceive frequency on the FT 101 ZD internal VFO These switches select optional fixed channels transceive only RX EXT CH1 2 6 PRESELECT The preselector control peaks the RF and IF stages for the frequency in use 7 BAND The bandswitch selects the frequency band in use 160 10 meters 8 SQL The SQL Squelch control will silence the receiver until a signal is received The SQL control can be used only when the FM unit is installed 9 CLARIFIER The clarifier control allows offset of 2 5 kHz from the frequency established by the main tuning dial iy 10 11 CLARIFIER SELECT switches Press the RX button for offset of the receive frequency Press the TX button for offset of the transmit frequency Press both buttons for offset of the transceive frequency 12 AF GAIN The AF GAIN control varies the output level of the audio amplifier stages Clockwise rotation increases the audio output level 13 RF GAIN The RF GAIN co
177. nal connections are being made 1 10 3 PHONO PLUG 2 Use these plugs for interface with station equip ment via the FT 101ZD rear panel 4 SPARE FUSES 5 1 each When replacing fuses be absolutely certain to use a fuse of the proper rating OUR WARRANTY DOES NOT COVER DAMAGE CAUSED BY IMPROPER FUSE REPLACEMENT For 100 117 volt AC operation use a 5 amp fuse For 200 234 volt operation use a 3 amp fuse m GENERAL MICROPHONE CONNECTIONS SHIELD YE 7A 6000 50 K Q YD 844A 600 Q 50 i YD 148 1 11 GENERAL INTERCONNECTIONS FV 101DM FT 101ZD VFO A VFO B Q AC CORD After Prod 24 CABLE 8P CABLE 6P FT 101ZD FV 101DM TELEPHONE LINE FL 2100Z 1012 LINE SP 901P PING GND For Service Manuals Contact gt MAURITRON TECHNICAL SERVICES PIN 9 INNER CONDUCTOR 8 Cherry Tree Rd Chinnor ACC 8 OUTER CONDUCTOR Oxon OX9 4QY Acc PIN 7 INNER CONDUCTOR Tel 01844 351694 Fax 01844 352554 PIN 8 OUTER CONDUCTOR Email enquiries mauritron co uk e lt ET 101ZD FV 901DM FL 2100Z SP 901P 1012 HF ANTENNA g EXT RECEIVER ANTENNA JACK FTV 901R EXT RCY FT 101ZD Om OUT 70Cm ence ei 2M a 6M ie et ANT iili U FT 101ZD FTV 901R 1 12 GENERAL o CA
178. ngWasher Nut T WIDTH CONTROL Solder Figure 4 Figure 3 3 5 SERVICING COUNTER UNIT INSTALLATION ON 1012 Early model before Prod 15 This section will deal with the installation of the COUNTER UNIT and digital display which are optional equipment for the economy 1012 model PARTS NEEDED Optical Filter with double face tape 1 Counter Module 1 Guide Pins 2 Support Tower 1 Vinyl Tubes 2 1 Remove the top cover of the transceiver according to the drawing on page 3 5 Remove the screws marked in Figure 5 These screws support the LED board 2 Remove the screws marked in Figure 5 as well as the tension spring and remove the analog display panel 3 Locate the analog display lamp Cut the leads to this lamp insert 1 lead each into the vinyl tube supplied with the counter kit and posi tion these leads out of the way of the VFO gears etc 4 Install the orange optical filter on the inside of the front panel of the transceiver in the position formerly occupied by the analog display panel Be sure that it is correctly centered The filter is held in place by the double face tape included with the filter 5 Install the two guide pins into the holes previously occupied by the screws When doing this install the LED board in its previous position Install the support tower into the hole marked in Figure 5 6 Remove the
179. ntrol varies the gain of the RF and IF stages Clockwise rotation increases the gain of these stages 14 LOADING This control tunes the output circuit of the final amplifier pi network to match the feedpoint impedance of the load 15 PLATE This control tunes the plate circuit of the final amplifier 16 MAIN TUNING KNOB Rotation of this knob selects the operating fre quency in conjunction with the setting of the bandswitch One revolution of the dial produces a frequency change of approximately 17 kHz 17 DIGITAL DISPLAY The digital display reads out the operating fre quency with resolution to 100 Hz The display unit is built into the FT 101ZD and is an available option for the FT 101Z 18 ANALOG DIAL The analog dial allows readout of the operating frequency to better than 1 kHz The combination of the precision dial mechanism and drive unit provides zero backlash at slow tuning rates 19 DIM This control allows dimming of the meter and dial lamps 20 METER The meter displays final amplifier cathode current IC relative power output PO and ALC feed back voltage 21 NB This control varies the threshold point for the noise blanker and should be set to the minimum point that provides the desired blanking action 22 DELAY This control sets the delay time for the VOX relay For voice actuated SSB or semi break in CW the operator may select the delay time most suitable for his or
180. ocal signal fed to gate 2 producing the RF output signal The RF signal is then fed through diode switch Dio 181007 to the DRIVE UNIT DRIVE UNIT PB 1714 PA UNIT PB 1715 The RF signal is amplified by driver 12BY7A and delivered to PA UNIT final amplifier tubes and 61468 The output from the final tubes is fed to the antenna jack A portion of the RF signal is coupled through to the cathode of the 12BY7A driver for the purpose of improving the linearity of the final amplifier This technique is known as RF negative feedback CW MODE For CW the 8 9883 MHz carrier is generated by oscillator at the frequency set by The carrier signal is fed through buffer Qsi3 and fed to the ring modulator The same carrier frequency 15 used in the tune mode DC voltage is applied through diode switch 0517 181555 and relay RLso unbalancing the ring modulator for CW operation The carrier signal is then fed to the IF UNIT The signal path is identical to that on SSB up to the DRIVE UNIT DRIVE UNIT PB 1714 PA UNIT PB 1715 Keying of the transmitter is accomplished by changing the bias voltage to the driver and final tubes During key up the tubes are cut off by application of 35 volts to Viso and 110 volts to Vir and Vi702 These cutoff voltages are TECHNICAL NOTES reduced to 0 1 volt and 60 volts respectively during key down conditions The key is connec
181. ock position will provide up to 10 dB of compression Advancing the control beyond the 10 o clock point may however degrade the voice to noise ratio so caution 15 recommended CW OPERATION After completing the tuning procedure insert the key line into the KEY jack on the rear panel The operator may select any power output desired by advancing the DRIVE control Once the maxi mum power output level has been reached the DRIVE control should not be advanced further The transmitter may be activated by the VOX circuit or by the PTT or MOX systems The TONE control on the rear apron of the transceiver sets the CW sidetone level The key up voltage at the key jack is 7 volts and the key down current is 1 5 mA t E t3 For receiving two positions of selectivity are provided When the optional CW filter is installed the operator may select between the 600 Hz bandwidth of the CW filter and the 2 4 kHz bandwidth of the SSB filter The WIDTH control may be used with either position of the MODE switch CW W or CW N AM OPERATION with optional AM unit After Prod 8 AM operation of the transmitter is accomplished by setting the MODE switch to the AM FM posi tion and inserting the proper amount of carrier with the DRIVE control After completing basic transmitter tune up place the MODE switch in the AM FM position Activate the transmitter and rotate the DRIVE control until the meter reads 10 100 mA in the IC
182. our expertise to be superior to that of the design engineer please leave these mods in place However in service work the occasion does arise when a trace must be cut Proceed as follows Circuit Traces on PCBA Jumper Etch cut Wire bridge If you have previously lifted a trace make an etch cut on each side of the lifted trace and install a wire bridge as shown in the drawing Square UM lifted Trace Coat Cut Area With Eastman 910 3 15 SERVICING SERVICING MODIFICATIONS MODIFICATION OF FV 901DM FOR USE WITH FT 101ZD The tuning dial for the FT 1 0170 turns in reversed sense with respect to the FV 901DM synthesized scanning VFO main dial If it is desired to have both dials rotate in the same direction for a given change in frequency the modification below will allow this facility It should be noted that this modification is not required to achieve full func tioning of the FV 901DM however clockwise rotation of the FV 901DM will correspond with counterclockwise rotation of the FT 101ZD dial 9010 Figure 13 3 16 Modification Procedure 1 2 3 4 Remove the top and bottom covers of the FV 901DM removing the screws as shown in Figure 13 Locate PB 1848 and PB 1849 which can be seen at A in Figure 14 Referring to Figurel5 locate the white green wire connected between pin 4 of Pi and PB 1848 also locate the green wire connected betwe
183. p this problem the 8 volt line for the clarifier board was separated from the other 8 volt lines and the following section will describe the correct procedure 1 Locate the white brown lead between the CLARIFIER board and the 8 V terminal on the RECT A Unit Cut this lead at the RECT A Unit CLARIFIER BOARD 973 R22 SIA rd A CLARIFIER BOARD 1973 C53 0047 R22 22 2 3 ee cut Install a three pin one grounded terminal strip adjacent to MJ one the bottom side of the chassis as shown in the drawing Connect the white brown wire to one side and install the PC78LO08 regulator so that the output side is connected to the white brown wire Then install the 0 1 mylar capacitor as shown and connect the input side of the uPC78L08 to the brown wire shown Ihe other end of the brown wire connects to pin 8 of MJ the 12 volt line terminal A comparison of the old and new circuits is shown below CLARIFIER BOARD MJ2 PREMIX UNIT White Brown 7 u Mylar ENLARGED VIEW 8108 Cut and remove White Brown lead from RECT A UNIT 8V terminal SERVICING 21 2 MHz SPURIOUS SUPPRESSION FT IOIZ ANALOG DIAL On the analog FT 101Z a lingering spurious signal could sometimes be heard at 21 2 MHz With the counter unit installed the beat is inaudible and For Serv
184. phone amplifier stage Clockwise rotation increases the mic gain level 24 COMP LEVEL This control varies the compression level for the built in RF speech processor The processor does not function in the AM mode 25 FUNCTION switches This switch activates the RF speech processor ALL RR This switch allows the insertion of 10 or 20 dB attenuators in the incoming signal path AGC S F OFF This switch allows selection of the desired AGC decay time In the OFF position the AGC is switched off and the S meter will not function PO IC ALC In the PO position relative power This control allows dimming of the meter and dial For Service Manuals Contact output is displayed on the meter lamps MAURITRON TECHNICAL SERVICES i i 8 Cherry Tree Chinnor In the IC position final amplifier Oxon OX9 4QY 18 METER 01844 351694 Fax 01844 352554 cathode current is displayed In Email enquiries mauriton co uk the ALC position ALC voltage is The meter displays final amplifier cathode current IC relative power output PO and ALC feed back voltage 19 NB This control varies the threshold point for the noise blanker and should be set to the minimum point that provides the desired blanking action displayed Regardless of the set ting of the meter switch the meter functions as an S meter on receive NB MARK In the NB position the noise blanker is activated In the MARK position
185. ply 5 0 5 MHz sweep output to the VFO output terminal at the rear apron external VFO Jack Connect a high impedance probe of an oscillo scope to 1 2 Adjust the transformers shown in Table 8 for a flat response across the entire passband If you have never adjusted a bandpass filter previously this may take some practice Perform the adjustments on each band ac cording to the chart s HET resur 160 Too 10 4 11 0 MHz 10mA Tani 36 9 39 0 JJY WWV 13 9 14 5 Table 8 ty 15m 160m 80m 40m 20m SERVICING J202 NB FIX UNIT PB 1961 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk lt 1 O z O X T315 gt Q303 e gt gt _ PREMIX LOCAL XTAL UNIT PB 1965 PREMIX UNIT PB 1962 3 3 SERVICING AM UNIT After production lot 8 1 Set the BAND switch to 40 the MODE switch to AM and the DRIVE control to the 3 o clock position Tune up the transmitter in the usual fashion Now adjust the core of T2401 for maximum power output into the dummy load wattmeter Connect a frequency counter to TP2402 Adjust TCa4o1 for a counter reading of ex actly 8988 3 kHz while transmitting Connect the RF probe of the VIVM to
186. po sition of the METER switch While speaking the microphone in a normal voice increase the MIC GAIN control until the meter indicates very slight movement with voice peaks Care must be exercised that the DRIVE control is not advanced too far Do not exceed 10 100 mA meter indi cation during AM operation or damage to the transmitter final amplifier tubes may result FM OPERATION with optional FM unit After Prod 24 After completing the basic transmitter tune up set the CARR control for 100 mA carrier level with the MODE switch in the AM FM position Speak into the microphone in a normal voice The MIC GAIN and COMP LEVEL controls have no effect on the FM mode For FM reception the SQL control on the front panel should be advanced only as far as required to silence background noise When adjusted just past the silencing threshold the squelch circuitry will provide noise free reception with maximum sensi tivity to weak FM signals Either AM unit or FM unit can be installed in your FT 101 ZDFor Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk Note GENERAL SELECT SWITCHES The SELECT switches allow selection of internal or external VFO frequency control as well as selection of up to 2 optional crystal controlled channels When the crystal controlled channels are installed they may
187. pressed shifts control of the transceive frequency to the external VFO TX EXT This switch when pressed shifts control of the transmit frequency to the external VFO RX EXT This switch when pressed shifts control of the receive frequency to the external VFO 1 6 VECO 00 VFO This switch selects control of the transceive frequency on the FT 101ZD internal VFO 2 These switches select optional fixed channels transceive only 5 PRESELECT The preselector control peaks the RF and IF stages for the frequency in use 6 BAND The bandswitch selects the frequency band in use 160 10 meters plus WWV JJY 5 MHz 7 CLARIFIER The clarifier control allows offset of 2 5 kHz from the frequency established by the main tuning dial 8 9 CLARIFIER SELECT switches Press the RX button for offset of the receive frequency Press the TX button for offset of the transmit frequency Press both buttons for offset of the transceive frequency Provided by http www yaesu museum com Downloaded by Amateur Radio Directory 9 10 AF GAIN The AF GAIN control varies the output level of the audio amplifier stages Clockwise rotation increases the audio output level 11 RF GAIN The RF GAIN control varies the gain of the RF and IF stages Clockwise rotation increases the gain of these stages 12 LOADING This control tunes the output circuit of the
188. quency displayed on the analog sub dial and the main display window tor the FT 101Z is added to the lower band edge frequency GENERAL For example if the analog dial indicates 074 as shown in the example and the BAND switch is on 40 meters lower band edge 7000 kHz the operating frequency will be 7074 kHz By rotating the BAND switch this position of the analog display will produce 14074 kHz for 20 meters 21074 for 15 meters etc For 80 and 1 2meters the lower band edges are 3500 kHz and 24500 kHz while for 160 meters the band edge is 1 5 MHz Therefore the dial should read 074 to produce 3574 kHz but 374 for 1874kHz Be careful so as not to operate outside the amateur bands 0 200 300 400 500 KHZ FIXED CHANNEL CRYSTAL INFORMATION Two fixed channels may be used with your FT 101ZD using optional crystals Crystals available from your Yaesu dealer Crystals must meet the specifications shown in Table 2 and must fall within the operating range 5500 5000 kHz Frequency calculation is made from the formula where F is the crystal frequency F is a constant derived from Table F is the operating frequency For example let us say it is desired to operate on 7199 kHz LSB Referring to Table 1 we see that for 40 meter LSB F is 12501 5 kHz Subtracting F 7199 kHz from F 12501 5 kHz yields 5302 5 kHz the crystal frequency For operation on 21420 kHz USB compute
189. r Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk PARTS LIST C eal 10219062 Dipped mica 500 WV 3000 pl MAIN CHASSIS Parts No G31049600 G3206 160 G34023500 G1090070 G1090080 G2090029 TR 25 496 i 2SB616 uPC78L08 5 G2015550 G2090001 t2 i R22 24 101245220 Carbon film 1 4W 220 R23 7 7 V oa J01245560 J01245101 J01245821 J01245102 101245152 gt gt R19 101245182 R20 110276100 m J10276101 310276222 ii J Carbon composition 1 2W GK 10 POTENTIOMETER VRI 160800035 VMIIABOGASMIII2 10 162800032 DM10A039A 500 20 a VM10A592A 5 VR8 VM10A654A 1 0 VR9 10 CAPACITOR 15 19 21 K30276271 8 K30276331 Dipped mica 500 WV 5 pF a 370 pF LCQ1727271K5 8 500 330 pF DM 15 331K5 K30276621 500 WV 620 DM19D621K5 C6 K30279052 500 1100 pF i DM19 112K5 Description IC ____ 14308 Bu K31306800 K02279002 K02219003_ mp K00279002 K00309001 02309002 K02309003 63 00329002 C K00359001_ cr kiss REPAIR PARTS Moulded mica 1 KWV 80 pF Ceramic 500 WV i 1 5 KWV 460 pF C29 34 35 K13170103 50 0 01 uk 41 64 C12 22 24 K13170
190. r 26 8 4 WMS SARC SARK J Ino HEU 268 WY er 6666L0 100010 ON 26 oN 2367099 LINN H31H3ANOO 20 20 a pr pm pe rera apamama WVHOVIO 4910280 LINN AS 123135 29 9961 8 71 7101 13 O3 1X3 1X3 j gir J e ge dmm 7 09 si etzito6821 9S5 t amp 2 1 5 96bVSZ U 8 JELTNSIXS x lt 9110 i vir I lt e ex mwos DIRE 3 943 7 I oj um ES DH f pre had esas QOOOoo0006 TE io Qe D lt 28 s 5 ae e m s s w _ ol 918 vor lt A9 BER 5 A8 a b HHH t 0 902 doz 3021 dot sol H DOH aos 011 4 Gee vl LINN AS 5 6 rene 305 ee cool COKE dOO 054 eo T 1 Ov as SL H i FIND 3 4 Y 121 lt 8396 t SMA O 4 zl
191. r Service Manuals Contact DRIVER BOARD HNICAL SERV Description 0017140 Driver board with components without vacuum tube 1714 0001714 Board 150710502 1303 1302 1301 1306 TC1304 1305 SWITCH N4090008 1B0001AC2060 1301 0 C cd lt LA 3 J S Vi ITO Oxon OX9 4QY Tol 01844 351694 Fax 01844 352554 Emait enauiriest duritrormco u lt o c TRIMMER C BOARD Parts No Description C0010920 TRIMMER C unit with components F1001092 Board VACUUM TUBE El 077 6090002 12BY7A Symbol No PB 1092 CAPACITOR 30276100 VACUUM TUBE SOCKET K30276820 VS1601 SB 9403 x30276271 _ 4 C1406 C1405 C1403 s 5 REPAIR PARTS m 602 OIO N gt gt gt ta C O gt gt ON r oN r2 9 e 2 7 C c J10276470 Carbon composition 1 2WGK 472 joreso 7 a ns eee E BE CAPACITOR K13170473 7 SOWV 0 047 uF K30279051 Dipped mica 500WV 1000 pF 11190020 Micro inductor FLSH 150 uH L1020029 220029 O c e e pm o lt 3 5 No CA we FINAL BOARD 0017151 Final board with components
192. re passband 33 5 34 0 If have never adjusted a bandpass previously this may take some practice Perform the adjustments on each band ac Table 7 cording to the chart prn For Service Manuals Con MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk Q302 PREMIX UNIT PB 2152 5 18 FM UNIT Set the transceiver to operate at 29 0 MHz 10 m O RX IF Adjustment Tum the SQL control fully counterclockwise and adjust and 2502 for maximum receiver noise from the speaker with no signal applied to the ANT connector Squelch Threshold Adjustment Set the SQL control at the 10 o clock position and adjust VR2s01 to the point where the receiver noise just disappears Carrier Frequency Adjustment Connect a frequency counter to pin 8 of J2501 and set the MIC GAIN control fully counterclock wise Adjust T2501 for a reading of exactly 8988 3 kHz TX IF Adjustment Connect the probe of a to 8 of 72506 and adjust T25o4 and T2505 for a maximum read ing on the VI VM While this adjustment is being made the DRIVE control should be adjusted so as not to clip the signal in the IF stage If the DRIVE control is set too excessively high the peak cannot be accurately obtained It may be necessary to perform this adjustment a few times in order to obtain a definite reading gt
193. rotate the PRESELECT control for a maximum meter reading Rotate the LOADING control for a maximum meter reading Rotate the PLATE control for a maximum meter reading 3 Again rotate the LOADING control and PLATE control each time advancing the DRIVE control approximately 2 steps until the DRIVE control is fully clockwise The transmitter is now tuned for maximum power output Do not exceed the maximum tuning time stipulated previously Return the VOX GAIN switch to the VOX position out of the MOX position return the METER switch to IC and return the DRIVE control to the fully counterclockwise position 4 SSB OPERATION After completing the above tuning procedure set the MODE switch to USB or LSB as desired Set the VOX GAIN control to PTT and activate the transmitter by pushing the microphone PTT switch or the footswitch if used With the METER switch set to the ALC position speak into the microphone in a normal voice Advance the MIC GAIN control until the meter kicks up to the midscale of the green colored portion of the meter scale Note When the METER switch is set to IC voice modulation peaks will indicate 150 200 mA Actual peak current though is ap proximately 2 times the indicated value To set the sensitivity of the VOX voice operated T R switching system advance the VOX GAIN control slowly while speaking into the microphone Advance the VOX GAIN control to the point where the speech signal ac
194. s gt C0017140 Driver board with components without vacuum tube _ 0001714 RCBoud _______ __ 4 Symbol No PartNo ____ TP 0022170 PCBwithcomponents Printed Circuit Board ee MEME ee ee s i _ ee ee ee ____________ ___________________ 01501 ____ 2501857 O O O O O ooo oo Too oo a Pa ee Se eee ff gg sam cubos compos GE STR ED GD 303SRD __ __ ______ nosi p ke 2 11 _ a e SOUL EON Se vse mis 0000 Carbon fim DW V Risa _ CAPACOR O OO J00345102 Ceramic disc S00WV 1514 1002451532 LSko 1603 1604 13170473 50WV 0 0474 R1511 1515 100245222 IC a 22 msi 7 7 7 7 aa fea Os A ge eee 7 7 e e R1503 1509 poosis 7 7 7 7 ka 1 ouveron O 5 O O du a 47 Micro inductor FLSH 150 uH L0 7 7 9 es Ris ____ TORE 05000017 Wrapping terminal amp REPAIR PARS FINAL BOARD Symbol No D1801 G2090001
195. s jack is not disabled by insertion of a headphone or speaker plug into their respective jacks 6 PO ADJ This control adjusts the relative power output meter 7 ACC ALC voltage and relay connections can be made through the accessory jack 5 5 Please insert the ACC plug at all times to provide heater voltage for the final amplifier tubes 8 TONE OUT The CW sidetone may be fed to an external receiver through this jack 9 A TRIP IN Anti trip input from an external receiver may be made via this jack to prevent the receiver audio output from tripping the FT 101ZD VOX 10 KEY The CW key may be connected at this point Key up voltage is 7 volts and key down current is 1 5 mA Be sure your electronic keyer s output switch will handle these levels 11 EXT VFO A This is a 8 pin DIN jack for interconnection to the FV 101DM external digital VFO 12 EXT VFO B This is a 6 pin DIN jack for interconnection to the FV 101Z FV 901DM and FV 101DM external VFO 13 FUSE This is the fuse holder For 100 117 volts replace with only a 5 amp fuse For 200 234 volts use a 3 amp fuse Replace fuses only with a fuse of the proper rating 14 IF OUT Wideband IF output is available at this jack for use with a spectrum analyzer etc 15 POWER Connect the AC power cord at this point being certain that your AC supply voltage matches the voltage specification for your transceiver See the transfor
196. scope provides superb monitor ing capability with instant interface to your 1017 station Output signal monitoring trape zoidal and two tone tests and general oscilloscope measurements are made with ease with the YO 901 A panoramic adapter known as the Band Scope is an available option allowing quick examination of the band for activity FC 901 IF TX and RX monitoring is not possible with the FC 901 ANTENNA COUPLER FT 101ZD YO 901 combination Present a 50 ohm load to your FT 101ZD trans ceiver all across the band with the FC 901 antenna coupler As many as three coax fed antennas and one random wire antenna may be accommodated SWR and power metering allow quick determi nation of proper matching conditions 1 5 GENERAL CONTROLS AND SWITCHES 1 559 TRANSCEIVER m m 2 i 6 E 1 Selection of LSB USB CW W SSB filter CW N optional CW filter and AM is provided 2 WIDTH ON When this button is pressed the variable bandwidth function is activated 3 WIDTH This control varies the IF bandwidth from 2 4 kHz down to 300 Hz When the WIDTH switch is OFF the bandwidth is fixed by the filter selected at the MODE switch 4 SELECT switches When using the optional FV 901DM synthesized scanning external VFO these switches determine which component will control the transmit receive or transceive frequency EXT This switch when
197. screws shown as on Figure 13 from the IF unit and replace with the two post screws supplied 3 Install the FM unit in the space over the IF unit and secure it with the mounting screws previously removed from the IF unit 4 Connect Pio 3 pin to 72504 P32 3 pin to J2s03 and P2o 8 pin to 72506 During this procedure be sure not to press to heavily on the connector so as not to damage the unit 5 Unplug P14 yellow shielded cable from J101 on the RF unit and connect it to on the Figure 13 FM unit Then connect 2501 yellow shielded cable to J101 by referring to Figure 15 6 On the RF unit unplug red shielded cable from Jio2 and connectitto J2sos on 2 2 the FM unit Connect P22 red shielded cable FM UNIT from connected to 12506 on the FM TT unit to 1102 on the RF unit as shown in BOARD SUPPORT Figure 15 IF UNIT ii i l ll U I I l i For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Figure 14 Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk i FM UNIT PB 2218 221 g GRAY COAX Figure 1 5 5 23 AM UNIT INSTALLATION 1 2 3 4 Remove the top cover of the transceiver as shown in Figure on page 3 5 Refer to Figure 13 and remove the mounting screws marked
198. signal delivered from 104 2SC2407 producing the RF output signal RF signal is then amplified by Qios 25 2407 and 0106 3SK40M and fed through diode switch D110 181007 to the DRIVE UNIT FM MODE The speech signal from the AF unit is fed through two stages of amplifier consisting of 2511 and 512 25 9450 and this amplified signal is passed to the instantaneous deviation control IDC circuit where both positive and negative peaks are clipped by and D2509 15853 The output from the IDC is fed through 2SC945Q where the signal is amplified and then fed to the de emphasis circuit consisting of C2547 Casas and 2503 This signal passes through where determines the maximum deviation to the modu lator D2511 FC63 while Q2514 25 9450 oscil lates at a crystal frequency of 8988 3 kHz and its frequency is modulated by variable capacitance diode Dos11 The output from Q25s14 is amplified by 515 2SC945 and 02516 2SK51 03 and then fed through a diode switch 2515 15553 to pin 6 of 12506 The output from the terminal is delivered to the IF unit COMMON CIRCUITS XCO Frequency PREMIX OUT F PREMIX LOCAL UNIT PB 2153 160m 15 9875MHz 10 4875 10 9875MHz_ 80m 17 9875MHz 12 4875 12 9875MHz Crystal oscillators 0601 0612 2SC380Y generate E 28 9 40 21 4875MHz 15 9875 16 4875MHz the premix
199. soe SIDE VIEW VIEW BOTTOM VIEW E COIL NC NO MX 2P FBR 211AD012M 3 47 SIDE VIEW SERVICING SERVICING RF UNIT PB 1960A Early model Before Prod 16 x x e 5 x Ou TUA a oz za o2z x 11 tc pO I MN 49 S 608 GSStSI dt 209 1021 908 tt 10 0 S02 100 09 SaS yez 959 R11dB RX gt x B 2 gt Or M 403 2 595 D aw dozp 100 5 rk a OO 123 L QU EOL 2 1500 819 HO 0 8 8 ol S z gt u i a M 12 DC VOLTAGES 3 48 SERVICING RF UNIT PARTS LAYOUT Viewed from solder side Viewed from component side SOURCE DRAIN GATE NO GATE GATE SOURCE SUBSTRATE II AND CASE DRAIN GATE 2 SOURCE 3SK40M 2SK19GR 3SK51 03 J310 For Service Manuals Contact BASE MAURITRON TECHNICAL SERVICES COLLECTOR 8 Cherry Tree Rd Chinnor Oxon OX9 4QY 01844 351694 Fax 01 844 352554 Email enquiries mauritron co uk EMITTER 2N4427 3 49 SERVICING NB FIX UNIT 1961 2048 ANT INPUT f PB 196 NB FIX UNIT NO 2 NOISE 005 25 1583 NOISE
200. ted to the KEY 2 terminal on the RECT B board PB 1968 When the key is closed the base of 25 733 is grounded causing 28C372Y to conduct The base of 2SA639 is thus set to 0 when the transistor conducts Under these circumstances the bias voltage applied to Viso and Vi702 places these tubes in the normal operating condition VOX circuit A portion of the microphone input signal is amplified by three stages of MC3403P which drive the VOX control gate SN74LS123N The output from pin 13 of is fed to the base of Q4 28 1383 switching the VOX relay on and off according to the presence or absence of a speech signal A portion of the speaker output is detected by and 1N60 providing a bucking voltage which is fed to preventing the speaker output from tripping the VOX The VOX delay may be set by adjusting V R2b for the desired delay time CW SIDETONE CW sidetone oscillator 28C373 oscillates at a frequency of approximately 800 Hz The output from is amplified by the final audio CLARIFIER L x 8 2 14 amplifier for delivery to the speaker The output from the sidetone oscillator is also fed to VOX amplifier Qso3 providing semi break in opera tion for CW AM MODE The speech signal from the microphone is ampli fied by 2SC732GR and 2S8C1815Y and passed to modulator gt 405
201. the instructions carefully in order to make the proper connections 1 Install the DC DC converter module as shown in the drawing Use the four screws supplied with the kit Do not force the plug into the socket as the connection should be smooth yet solid Check the DC cable fuse socket located in the positive red lead to be certain that a 20 amp fuse is installed 2 When making connections to the battery be absolutely certain that the proper polarity is observed The RED lead should be connected to the POSITIVE battery terminal and the BLACK lead should be connected to the NEGATIVE terminal OUR WARRANTY DOES NOT COVER DAMAGE CAUSED BY REVERSED POLARITY CONNECTIONS 3 Before connecting the DC power cable to the transceiver check the automobile voltage regulator level with the engine running bat tery charging The maximum charging rate 4 should be 15 volts or less If the voltage is higher than this level please adjust the voltage regulator for a maximum of 15 volts This precaution applies as well to bench power supplies which should be adjusted in the same fashion Also the transceiver should not be operated from a supply voltage of less than 12 volts Connect the DC cable to the transceiver Power connections are made automatically when the DC cable is connected to the POWER jack 5 NOTES MOBILE INSTALLATION Be certain that sufficient room is provided for free a
202. thout changing the output level Adjust for a power output reading of 15 watts on the wattmeter Shift the MODE switch to USB Adjust for an identical 15 watt reading on the watt meter For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01 844 351694 Fax 01844 352554 Email enquiries mauritron co uk TCs01 X501 Q509 Q506 AF UNIT PB 1964 3 27 SERVICING Recheck the LSB adjustment as well as the carrier balance adjustment after performing the carrier point alignment The background noise when switching between USB and LSB should not change Carrier Balance Tune up the transceiver on 20 meters USB mode into a dummy load Set the main tuning dial to 14 250 MHz Connect the RF probe of the to the antenna jack Disconnect all microphones etc from the microphone jack Activate the transmitter by placing the VOX GAIN control into the MOX position Adjust VR and for a minimum reading If a is unavailable use an external monitor receiver tuned to the transmitter frequency and adjust V R5o and fora minimum S meter reading on the external receiver This adjustment should be repeated several times on LSB and USB in order to ensure complete carrier nulling CW Carrier Point Connect a frequency counter to 4 locat ed on the IF UNIT Place the M
203. tion as shown in Figure21 Set the LOAD control to the correct position and close the PTT switch Dip the PLATE control for minimum IC reading on the transceiver meter Now advance the DRIVE control to the point where maximum power output is obtained do not go beyond the maximum PO point Adjust the cores of T Ts for maximum power output Do not exceed the 10 second key down limi tation during this adjustment On receive set the RF GAIN control fully clockwise and turn the marker on Tune in the marker signal at 30 000 MHz and adjust and slightly for maximum deflection on the S meter Now recheck the peaking on transmit several repetitions may be necessary to secure the proper ratio 3 4 5 Locate and set its core to the same physical level as the cores of and T3 were set in step 5 Set the BAND switch to 10A the VFO dial to 000 and tune up the transmitter Peak the PRESELECTOR control for maximum power output Now adjust TCi306 for maximum power output into the wattmeter On receive tune to the marker signal at 28 000 MHz and adjust 1206 and on the RF UNIT for maximum deflection of the S meter As there may be some interaction of adjustments please repeat steps 3 through 7 so as to be sure of proper tracking 6 7 8 SERVICING 9 Adjust the final amplifier neutralization as described on page 3 35 10 Again recheck steps 3 through 7
204. tivates the transmitter Set the antitrip potentiometer on the rear apron to the minimum point which prevents the speaker output from tripping the VOX Do not use more VOX gain nor antitrip than is necessary Adjust the front panel DELAY control for the desired relay recovery time RF SPEECH PROCESSOR ADJUSTMENT The FT 101ZD RF speech processor when correct ly adjusted will improve the intelligibility threshold at the receiving end by increasing the average SSB power output RF clipping is applied to the IF signal which is then filtered to remove harmonics and out of band intermodulation products RF envelope clipping causes much less distortion than that caused by an equivalent amount of AF clip ping and the result is an output signal with more punch Set the PROC switch to OFF and set the MIC GAIN contro as described previously voice peaks falling within the green zone of the ALC meter scale Now set the PROC switch to ON and set the COMP LEVEL control to the 10 o clock position Advance the DRIVE control so that the desired power output is obtained and be sure that the ALC meter indication is within the green zone With the RF speech processor activated the ALC meter indication may not be quite as high as when the processor is off This is entirely normal because the average power output is higher with the proces sor although the peaks are being clipped Setting the COMP LEVEL control up to the 3 o cl
205. uF 2222222 302 304 308 30024503 07077 310912314 E 22 21 TRIMMER CAPACITOR 325326 ccu xsmowe zcvazw 3052 sopF 7 7 7 I ee U U ee ee MINH RENE 7 INDUCTOR POTENTIOMETER a Ixi xs nsi L L pcr BN ee anon C 1890067 Dipped mea uemmo mzago CE E 7 7 7 3s REPAIR PARS K30176391 Dipped mica SOWV 390 10402 419 425 G3090035 FET 2SK19TM GR C311 315 319 30176561 560 pF 0401 405 412 G4800510C 35 51 03 680pF 415 416 923 321 K30176681 C307 K30176751 750 10408 G3090019 C301 305 309 13170103 Ceramic 19407 420 G3105641 2310 TR 25 564 313 317 321 0404 409 410 G3303720Y 28C372Y 325 329 333 417 418 337 339 343 422 424 345 351 302 304 306 7 308 310 312 ee ec 314 316 318 Tl S 320 322 324 ed 326 328 330 T SCS 332 334 336 340 342 344 Mila 00010 18897 Fito 92015550 181888 ULL 49 1 49 424 FLAH IROM Lu 1301304306 NAMUR ES SA A CI A TS SES ERT LEN 362 1902000 H0100433 HC I8 U 1974786 Bosa mossa T To o o 3 1200200 SSS Sd mo
206. ug __ C2313 2331 K50177473_ 7 170090065 CONNECTOR PLUG QSP6FL __ PiN peua sese o 0090018 PIN PLUG STP58 a 2333 C2306 2307 70127106 Tantalum 16WV 10 uF 2309 7 77 77 0000003 Electrolytic 0 330uF 7 100000004 200 234 Feed tn T __________ MARQUE eS A DUM 4 18 SECTION 5 LATE MODEL UPDATE GENERAL DESCRIPTION 25 d or Real CONTROLS AND SWITCHES MM Kt tnn PET REAR APRON CONNECTIONS meet BLOCK DIAGRAM oeron ronne __ _____ dpi CIRCUIT DESCRIPTION eee ee MAINTENANCE AND ALIGNMENT e ttt OPTIONAL 8 6 PARTS EIST ossis esee bids For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 01844 352554 Email enquiries mauritron co uk HIGH PERFORMANCE HF TRANSCEIVER YAESU 10120 TT ee ARON 2 gt 42520 GENERAL DESCRIPTION The FT 101ZD is a precision engineered high performance HF transceiver of advanced design providing all band 160 10 meters operation on SSB CW and AM or FM This transceiv
207. ully the high performance features and ease of operation of the FT 101ZD For today s active amateur the 101Z series is indeed THE RADIO GENERAL SPECIFICATIONS Frequency coverage 160 1 8 2 0 MHz 80 m 3 5 4 0 MHz 40m 7 0 7 5 MHz 430m 10 0 10 5 MHz 20m 14 0 14 5 MHz 417m 18 0 18 5 MHz gt m 21 0 21 5 MHz 2m 24 5 25 0 MHz 10 28 0 29 9 MHz 4 After Prod 17 Power requirements 100 110 117 200 220 234 volts 50 60 Hz 13 5 volts 10 DC DC converter optional Power consumption 85 VA receive 73 VA HEATER OFF 330 VA transmit DC 5 5 amps receive 1 1 amps HEATER OFF 21 amps transmit Size 345 W x 157 H x 326 D mm Weight For amp erviss M ervice Manual Approx 15 kg MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY TRANSMITTER Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk Emission type AA LSB USB CW AM After Prod 8 AM or FM After Prod 24 Power input 180 watts DC SSB CW 50 watts DC AM FM Carrier suppression Better than 40 dB Unwanted sideband suppression Better than 40 dB 14 MHz kHz Spurious radiation Better than 40 dB down Transmitter frequency response 300 2700 Hz 6 dB Third order distortion products Better than 31 dB down Transmitter frequency stability Less than 300 Hz after 10 minute warmup less than 100 Hz after 30 minute warm
208. up Antenna output impedance 50 75 ohms unbalanced Modulation Balanced modulator Amplitude modulation of a low power stage Variable reactance frequency modu lation max deviation 5 kHz Microphone input impedance 500 600 ohms low impedance RECEIVER Sensitivity 0 25 for S N 10 dB SSB CW 0 5 for S N 10 dB 0 3 uV for 20 dB noise quieting FM Image rejection Better than 60 dB 160 12 m Better than 50 dB 10 m JF rejection Better than 70 dB 160 80 20 10 m Better than 60 dB 40 m 30 m Selectivity SSB 2 4 kHz 6 dB 4 0 kHz 60 dB CW 0 6 kHz 6 dB 1 2 kHz 60 dB CW 350 6 dB 1 2 kHz 60 dB AM 3 6 kHz 6 dB 6 8 kHz 60 dB 12 kHz 6 dB 24 kHz 60 dB Bandwidth control Continuous from 2 4 kHz to 300 Hz Audio output impedance 4 16 ohms Audio output 3 watts at 10 THD 4 chm load with optional 600 Hz CW filter with optional 350 Hz CW filter with optional unit Specifications subject to change without notice i GENERAL TUBES AND SEMICONDUCTORS Vacuum Tubes Field Effect Transistors Schottky Barrier Diode FM Unit 12BY7A 1 25 19 9 ND487C2 3R 1 6146 2 2SK19BL 577 35 40 Silicon Diodes Transistors 38K51 03 7 151555 gg Effect Transistots T20A6 2 35 73 1001 8 2SK125 254495 1310 2 10010 8 2SA496Y 2 V06B 2
209. ver operating voltages and relay connec tions can be accessed through the accessory jack Please insert the ACC plug at all times to provide heater voltage for the driver and final amplifier tubes e 6 7 TONE OUT The CW sidetone may be fed to an external receiver through this jack 8 A TRIP IN Anti trip input from an external receiver may be made via this jack to prevent the receiver audio output from tripping the FT 101ZD VOX 9 KEY The CW key may be connected at this point Key up voltage is 7 volts and key down current is 1 5 mA Be sure your electronic keyer s output switch will handle these levels 10 EXT VFO Connection of an external VFO such as the FV 901DM can be made at this jack 11 FUSE This is the fuse holder For 100 117 volts replace with only a 5 amp use For 200 234 volts use a 3 amp fuse Replace fuses only with a fuse of the proper rating 12 IF OUT Wideband IF output is available at this jack for use with a spectrum analyzer etc GENERAL 13 POWER Connect the AC power cord at this point being certain that your AC supply voltage matches the voltage specification for your transceiver See the transformer primary connection chart When using the optional DC DC converter the DC supply is connected at this point DO NOT CONNECT THE AC POWER CORD TO A DC POWER SOURCE OUR WARRANTY DOES NOT COVER DAMAGE CAUSED BY SUCH IMPROPER POWER CON NECTIONS
210. volts This pre caution also applies to bench power supplies which should be adjusted in the same fashion Caution should also be taken so that the transceiver is not operated from a supply volt age of less than 12 volts Connect the DC cable to the transceiver Power connections are made automatically when the DC cable is connected to the POWER jack 417 RECT A POWER UNIT Figure 6 arza BLACK TORANGE FUSE 20A E Figure 7 For Service Manuals Contact MAURITRON TECHNICAL SERVICES 8 Cherry Tree Rd Chinnor Oxon OX9 4QY Tel 01844 351694 Fax 01844 352554 Email enquiries mauritron co uk Figure 8 5 2 COUNTER UNIT PB 2086A INSTALLATION ON FT 101Z The installation of the New Counter unit PB 2086A to the FT 101Z economy can be easily accomplished in a matter of minutes Counter units PB 1980 and PB 1980B cannot be installed in FT 101Z s with serial number above XX160001 PARTS NEEDED Optical Filter with double face tape Counter Module Guide Pins Support Tower Vinyl Tubes 1 2 3 4 5 6 7 1 1 2 1 2 Remove the top cover of the transceiver according to the drawing on page 3 5 Remove the screws marked in FigurelO These screws support the LED board Remove the screws marked in FigurelO as well as the tension spring and remove the analog display panel Locate the analog display lamp Cut the leads to this la
211. w adjust TCiao1 and TCi301 for maximum power output into the dummy load On receive tune to the marker signal at 1 900 MHz and adjust TCi201 for maximum S meter deflection on the marker signal BROWN 9 MAX 1 2 1 3 MIN Figure 21 t ADVICE ON TROUBLESHOOTING THE DRIVER FINAL AMPLIFIER STAGES Three tubes are used in the FT 101ZD a 12BY7A driver and two 6146Bs in the final amplifier Because not all service personnel are as familiar with tubes as they are with semiconductors we would begin by cautioning you that tubes are volt age devices To produce power in useful amounts they require voltages well in excess of that needed for solid state devices Take care lest you develop serviceman s elbow a malady well known to old timers It occurs when your arm jerks back from the 800 volts right into some immovable object Accompanied by a few colorful phrases it is not an experience one knowingly encourages though it is seldom fatal The old adage of keep one hand in your hip pocket should be heeded whenever working in areas of exposed high voltage If you should come into contact with the high voltage it is best to call it quits for the service day Alert your colleagues to what happened and do not hesitate for even 5 minutes to seek medical attention should any signs of shock trauma develop Trauma following con tact with high voltage is sometimes more dangerous than the high voltage itself IT CAN BE FATAL

YAESU FT-101ZD Service manual

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