Kenwood VFO-230 Service Manual Download

Page: 66 / 71

Summary of Contents for VFO-230

Page 1: ...BLY 27 ADJUSTMENTS 3 2 LOCATION OF ADJUSTMENTS 4 2 LEVEL DIAGRAM 4 4 TS 830M SCHEMATIC DIAGRAM 6 1 TS 830s SCHEMATIC ABBREVIATION 6 2 TS 830s SCHEMATIC DIAGRAM 6 3 BLOCK DIAGRAM 6 4 VFO 230 BLOCK DIAGRAM 45 SPECIFICATIOIVS 4 6 CIRCUIT DESCRIPTION 4 6 PC BOARD VIEWS 4 9 PARTS LIST 51 ADJUSTMENTS 53 PACKING 53 AC VOLTAGE CONVERSION 5 6 SCHEMATIC DIAGRAM 57 AT 230 5 8 DS 2 6 0 SP 230 BACK COVER HF SS...

Page 2: ...us Radiation Better than 60 dB Harmonic Radiation Better than 4 0 dB Audio Freq Response 400 to 2 600 Hz within 6 dB 3rd Order lntermodulation Distortion Better than 36 dB RECEIVER Receiver Sensitivity 0 25 pV at 10 dB S N N for SSB CW 830S M 2pVat 10dBS N NforAM 830M Image Ratio Better than 60 dB IF Rejection Better than 80 dB Receiver Selectivity C W NARROW Wlth YK 88C option1500 Hz 6 dB 1 5 kHz...

Page 3: ... The signal then passes through ceramic filter CF2 whose center frequency is 455 kHz and is amplified by 0 4 3SK73 It then IS fed to the notch circuit Q5 through Q7 2SC1815 After being amplified by Q8 3SK73 it is demodulated to an audio srgnal by the product detector D20 D23 IN60 X4 In the AF unit the audio s gnal is amplified by Q3 2SC2240 passes through the AF GAIN control and after belng arnpll...

Page 4: ... unlocks for any reason it will be detected from the phase comparator out put T h swill turn off the VCO output to prevent spurious radiation and at the same time the digital d splaywill be blanked to Inform the operator of unlock status Table 6 Frequency chart CENTER 8 83MHt M1 455KHz FROM RF AMP CERAMIC AF t FILTER IF AMP m DET I r r 1 1 I 1 VBT OSC MlX 1 1 I I 01 6 011 BPFI lOMHz I I 1 0 I I 4 ...

Page 5: ... Y 9 BT 12 Blanking information 4 Segment H approx 5V Display Gate Counter driver L Blank 10M 0 0 0 0 1 1 03C 1 04 SN7400N TC4029BP 02 Display tube 4 7 Vrms 010 011 BLlc TC5066BP TC5064BP DCBA 1 0 0 0 1 1 0 0 1 1 0 1 0 1 1 1 1 1 0 1 l o l l I 1 I 0 0 devider 1 2 devider 012 013 6 1K l K r 0 5 H H L L L L 1 M 0 4 7 8 8 9 BAND 21 24 5 28 28 5 29 29 5 approx 2 1 9 5 9 x 2 v 24V DC DC Clock 06 TC4518B...

Page 6: ...coder driver Band nformation suppl edfrom the RF unlt IS applied to a diode matrix to preset the 1 0 0 kHz 1 MHz and 1 0 MHz digits Preset values are given In Figure 3 For Instance to preset 14 000 MHz with a 500 kHz counter Input s gnal 1 0 MHz value IS preset to 1 1 MHz to 3 and 100 kHz to 5 the 5 0 0 kHz counter input signal subtracted from 14 000 MHz If no counter input signal were present 13 ...

Page 7: ...Hz OP YK 88C 500Hz OP YK 88CN 270Hz Item Center frequency fo Center frequency deviation 6 dB bandwidth 60 dB bandwidth Ripple Loss Guaranteedattenuation Input and output impedance k 2 kHz to f1 MHz Rating 8830 7 kHz fo 150Hz at 6 dB t 2 5 0 Hz or more kg00 Hz or less 2 dB or less 6 d B k 2 d B 80 dB or more within fo 2 kHz to k 1 MHz 60012 15 pF Table 9 CW Crystal filter L71 0221 05 YK 88CN Option...

Page 8: ... bandwldth and IF SHlFT 1 s described below Example 1 no IF shift Bandwidth 1 7 kHz IF SHIFT 0 kHz 1 When the CAR 2 frequency 1 s reduced by 1 kHz uslng the VBT control and a slgnal centered at 14 0 0 1 5 MHz IS recelv ed the CAR 1 and 2 frequencies are as follows CAR 1 8831 0 kHz 8831 5 kHz 0 5 kHz CAR 2 8374 0 kHz VBT control The system 1 s deslgned so that only half the amount of fre quency sh ...

Page 9: ... X48 1290 00 1 4 7 Thls IS a brtdged Tfilter consisting of L C and R components The notch I S provlded In the 455 kHz IF Normally the width of the null would be broad at 455 kHz Actually a sharp notch is provlded by adding an active circuit which applies posltive feedback to raise the Q Q5 and 0 6 2SC1815Y are a Q multiplier Q7 2SC1815Y is a buffer ampllfier 4 Speech processor in IF unit X48 1290 ...

Page 10: ...er unit X54 1540 00 RF unit X44 1360 00 INSIDE VIEWS CF2 CF3 455kHz Ceramic filter c w 4 5 6 5 CFJ455K5 456 5kHz A M I filter 830M W A M Unit 830M W X54 16 10 60 AF unit X49 1140 00 VFO Ass y PLL unit X50 1680 00 830Mtype is shown FINAL unit X56 1380 00 TC 1 Neutralization Rectifier unit X43 1370 00 ...

Page 11: ...T 40 1170 00 PC BOARD VIEWS T S 8 3 0 M RECTIFIER UNlT X43 1370 00 r FINAL UNlT 56 1380 00 View from foil side 7 SWITCH BOARD J25 2773 03 NOTCH XIT RIT FIX MONl R F ATT I side RTER SW TERMINAL CONNECTOR RL GRN r ...

Page 12: ...TS 830s PC BOARD VIEWS RF UNIT X44 1360 00 Attachment method of T I T2 Brown Twisted wires Brown ...

Page 13: ...OAR w w w 0 m u 2 2 u 3 m 5 5 6 5 s P a _ m w m z c o a 4 4 2 m m v z t i C EO z 0 2 u z 2 0 0 2 c m C m C m C E 2 2 57 02 v z g z p q L a 0 mt v ...

Page 14: ...TS 830S M PC BOARD VIEW AF UNIT X49 1140 00 2SA1015 Y 2SC945 Q 2SC1515 K 2SA562 Y 2SC460 B 2SA473 Y 2SK19 GR 2SK30A GR 0 HA1368R M V 1 3 ...

Page 15: ...SCHEMATIC PC BOARD VIEW TS 830S M COUNTER UNIT X54 1540 00 0C28 MARK ...

Page 16: ...TS 830Sr PC BOARD VIEW ...

Page 17: ...SCHEMATIC TS 830Sn ...

Page 18: ...alue 3 rernp range 6 Tolerance 3 Temp coeff c ent 1st word Color ppm C 1 0 t 7 0 Cord Operating temperature C Type I Type II C Black 0 P Orange 1 5 0 6 Tolerance S Green 3 3 0 L Red 8 0 R Yellow 220 3 0 t 8 5 J 120 T Blue 4 7 0 H 60 2nd Word ppm C Less than 10 pF G t 3 0 B D E F 3 0 t 8 5 K 2 2 5 0 3 0 t 8 5 C o r d C Abbreviation Abbreviation Capacitor Mylar Ceramic Styren Electrolytic Tantalum M...

Page 19: ...ss y Vernier mechanism UHF type receptacle ANT 4P male socket MIC 7P DIN socket REMOTE 8P DIN socket EXT VFO XVTR 7PDINplug 2P connector 12P connector 12P plug 2P plug 3P Phone jack Key Phone Phone jack Ext SP Phone plug Ext SP 2P Pin jack IF OUT 1 2 5P terminal Lug plate Lug plate Square terminal Gnd plate AC cord K AC cord X AC cord W AC cord T Plate cap Coax cable with plug Parts No 843 0649 04...

Page 20: ...ke L2 Final coil A Final coil B 28MHz PS coil Plate Ferri inductor 150pH Choke coil 6 8pH L1 Ornamental screw DH Protective nut BIAS Hex head screw VFO Pot VET Tone Pot IF Shift Notch Pot AF RF Pot RIT XIT 5K 6 Pot Delay 250K 6 Pot Vox Gain IOK C S Pot Processor 1OK A Pot NB 300R 6 Pot MIC CAR Pot Bias RFOUT 10K 6 Solid 220R 1 2W VR1 VR2 VR3 VR4 VR5 VR6 VR7 VR8 VR9 VR10 12 R22 PC board type 0 5 SH...

Page 21: ... L20 L2 1 L22 L23 L24 L25 L26 L27 L28 L29 L30 L31 L32 34 L35 L36 L37 38 L39 L40 L41 L42 L43 L44 L45 46 VR 1 VR2 R34 R35 R36 R37 R38 R41 Oescr ption PC board collar PC board bush Wide band trans IFT Wide band trans IFT Ferri inductor 2 7pH Ferri inductor 4 7pH Trap coil Trap coil Tuning coil 3 5MHz Tuning coil 7MHz Tuning coil 1OMHz Tuning coil 14MHz Tuning coil 18MHz Tuning coil 2 1MHz Tuning coil...

Page 22: ...CC45SLlH100D C91 0456 05 C91 0457 05 C9 1 0457 05 C9 1 0457 05 CC45SLlH020C Not used C91 0457 05 CC45SLlHlOOD CC45SLlH330J CC45SLlH050C CE04W1HR47M CC45SLlHlOlJ CQ92M 1H822K CQ92MlH153K CE04W1HR47M CE04WlH4R7M CQ92MlH273K CE04WlAlOl M CE04WlA470M CE04WlH010M CE04W2V220 C05 0314 05 C05 0030 15 C05 0314 05 E23 0401 05 L40 1511 03 L34 0940 05 L34 0536 05 L34 0941 05 L34 0997 05 L34 0943 05 L34 0664 0...

Page 23: ...R45 CE04WlH010 CQ92MlH472K CE04WlH4R7M CE04W1C471M CC45SLlH120J CE04W1C470Q CQ92MlH104K CE04W1C221Q CQ92MlH103K CE04AWlHORlbl Parts No CE04WlA470Q CE04WlC470Q CE04WlH3R3 CE04W1E100Q CE04WlH010 CQ92MlH103K CE04WlE100Q CQ92M 1H472K CQ92MlH473K CE04W1H3R3 CK45E2H103P CQ93M2A473K CQ93M2A224M CE04W1HR47 CC45SLlHlOOD CE04WlH010 CE04WlH010 CE04WlC470Q CE04WlC102M CE04W1H3R3 CE04AWlHR22M C90 0807 05 CE04W...

Page 24: ...CC45SLlH220J CC45SL1 H151J CC45SL1 H050C CC45SLlH220J CC45SLlH330J CC45SLlHlOOD CC45CHlHOlOC CC45SL1 H150J CC45SL1H100D CC45CHlH020C CC45SL1H l O l J C9 1 0456 05 CC45CHlHOlOC CC45UJlH680J CC45SL1H220J C9 1 0456 05 CC45CHlH270J CC45CHlH390J CC45CH1H101J CC45SL1H221J CC45SLlH220J CC45SLlH050C CE04WlA470Q CC45SLlHlOOD C9 1 0456 05 CE04WlHR47M C05 0029 15 C05 0056 05 C05 0030 15 E04 0154 05 E18 0201 ...

Page 25: ... 1 0456 05 CC45SL1H l O l J CC45S lH470J CQ92MlH103K CE04WlC470M C91 0456 05 CE04WlHR47M Not used CE04WlC101M CE04WlV100Q CQ92MlH103K CE04WlV100Q c91 0456 05 CQ92MlH103K CC45SLlH050C CE04WlA330Q C9 1 0456 05 c 9 1 0456 05 VFO Ass y unit X60 1150 00 1 Re marks f7 Parts No I C91 0456 05 C90 0830 05 J3 1 0502 04 J42 0404 05 L19 0323 05 L40 4711 03 L40 1011 04 L40 221 1 03 L40 151 1 03 RC05GF2H221J De...

Page 26: ...0025 05 L32 0629 05 L32 0609 05 L40 1021 03 L40 4711 03 L40 1021 03 L40 1501 03 L40 4711 03 N09 0617 04 Parts No CC45SL2H101J CK45E2H102P CK45E2H103P CC45CH2H150J E01 0002 05 E23 0046 04 L33 0010 05 L40 1511 03 L40 47 11 03 RC05GF2H200J RC05GF2H101J Descript on C 22pF C 10pF 0 5pF C 150pF C 150pF C 2pF 0 25pF C 0 047pF C 39pF C 10pF 0 5pF C 39pF C 0 047pF Variable capacitor 30pF Ceramic trimmer 6p...

Page 27: ...DISASSEMBLY ...

Page 28: ...DISASSEMBLY ...

Page 29: ...DISASSEMBLY PC board collar J31 0502 04 ...

Page 30: ...DISASSEMBLY ...

Page 31: ...41x2 Round screw 3 x 6 x 7 N35 3006 46 PC board bush FINAL unit Self tanninn crr0t r UHF type receptacle E04 0152 05 ANTI VOX Pot Round screw x 2 N30 3004 46 12P Connector E08 1202 05 REMOTE7P DIN socket E06 0751 05 J13 0407 15 Round screw x 2 Round screw x 6 N30 3006 46 N30 2604 46 ...

Page 32: ...nce 50R 2 D sslpation 100W continuous or greater 3 Frequency limits 1 8 to 3 0 MHz 7 OSCILLOSCOPE Requlres high senslttvity and external synchronization capab l ty 8 SWEEP GENERATOR 1 Center frequency 8 to 4 0 MHz 2 Sweep bandwidth Maximum t16 MHz 3 Output voltage More than 0 1V 9 STANDARD SIGNAL GENERATOR SSG 1 Frequency range 1 8 to 3 0 MHz 2 Output 2 0 dB O 1 pV 120 dB 1V 3 Output Z 5 0 0 Gener...

Page 33: ...eck the variation MODE USB Same as above STBY SEND Regardless of the IF SHIFT setting STBY REC IF SHIFT Centered VBT Fully counter clockwise VBT Fully clockwise VBT Fully counterclockwise STBY SEND Regardless of VBT setting STBY REC I VR2 TC2 TC3 VR3 I I NOTE L16 TC2 Parts VR4 VR3 IF IF I f counter f counter RF VTVM F counter After NOTE T I 6 I Method 9V 3 6V TP3 TP1 IF checking the above 0 3V I 1...

Page 34: ... cond tion set the CAL control to the index Turn the matn tuning and set the calibrated CAL control to the index in the order of 0 100 200 300 400 and 500 to check frequency deviation at each 100 kHz point Set the CAL control back to 250 under the above condl tion do not turn excessive ly then further set back the CAL control to 0 w t h respect to the frequency at 250 to check the diffe rence from...

Page 35: ...ise posltlon RIT control RIT OFF Install the 5750 kHz quartz Normal osc lla crystal into the socket on tlon must be the PLL unlt FIX ON RFVTVM Remove the quartz crystal from t s socket FIX OFF 8 Counter refe Fcounter PLL TP2 rence osc llator adjustment glven In brackets are obtalned 0 250 500 Unlt Part 10 BPF A L 28 5 29 29 5 37 33 37 83 38 33 37 58 1 3 7 8 3 4 75 Check the level at each of the ab...

Page 36: ...tment Method Adjust T7 T9 until the response shown T9 T I 7 T I 0 T I 1 T I 2 T I 8 VR1 VR1 VR9 TC1 ANT coil I 8 RF coil I 8 _ T2 L2 L3 4 L4 f 5 s L6 4 7 is L9 V L11 ANT coil 34 58 34 13 35 01 n Less than 55dB Spectrum at the right is obtained Then adjust T I 7 for maximum amplitude Adjust T I 0 through T I 2 until the band response shown at right is obtained Then adjust TI 8 for maximum amplitude...

Page 37: ...change 1 s required 1 For all 3 bands Break the line between the RF unlt X44 1360 00 connector 6 Pin 1 TOF terminal and AF unit X49 1 140 00 connector 6 Pin 4 TOF ter m nal 2 Or for nd vidual Bands On the RF unlt X44 1360 00 Band Remove or Cut Part 10 MHz 0 4 l8 MHz D5 24 5 MHz 06 18 125 21 225 24 950 28 800 18 21 24 5 28 5 AFVTVM Oscillo scope Oscillo scope Oscill0 scope AF VTVM Oscillo scope AF ...

Page 38: ...ibed above AGC FAST the IF unit Connect the VET 1 output to IF OUT 1 and connect the oscilloscope to IF OUT 2 Connect a 0 047pF capacitor across D l 4 and D15 on the NG IF unit Set the filter D 15 switching terminal connection D 1 4 to CW3 Adjust the control on the VET 1 until the wave form shown at right is observed on the oscilloscope Speaker Set the MODE switch to CW W Disconnect the SSG output...

Page 39: ...m with the DRIVE control Increase oscilloscope sensitivity Reduce oscilloscope sensitivity 5V div SG SW ON Connect a power meter to the ANT terminal plug key into the rear Key jack to transmit in any band Operate the key STBY REC VOX ON Operated the key Ground pin 4 of connector on the AF unit Set the BAND switch to 18 and VFO to 125 Connect a power meter to the ANT terminal Set the STBY switch to...

Page 40: ...ith the MIC GAlN control Increase the AG output to 10 mV Repeat the above three adjustment steps several times SG SW OFF MODE USB METER COMP MlCGAlN MIN PROC ON Connect the AG output 1 5 kHz 5 mV to the MIC jack Set the STBY switch to SEND Adjust the COMP LEVEL control until the meter reading is obtained Set VR5 on the IF unit fully clockwise Adjust the COMP LEVEL control until the meter indicates...

Page 41: ...l the meter indicates the maximum on scale ALC reading Set the PROC to ON STBY REC BAND 14 VFO 175 AGC FAST CAL ON Set the marker level to 0 63V with the AF GAlN Adjustment Method Adjust until the same meter reading is obtained MAX ALC on scale Monitor output 0 63V 8f2 unit IF S ectrum analyzer control Connect a power meter to the ANT terminal SG SW ON STBY SEND Tune up MODE US6 Connect the AG 1 k...

Page 42: ...S Meter S t a r t S9set VR I NOTCH Ad j PI Suppression L 9 DRIVE L 2 5 El 47 13 L 2 6 3 8 aTX Spurious El T 4 T P 3 RF J 2 2 IFTrap MIX Balance Trap VRI T 2 ANT IFTrap El MAX p J 6 Comp meter 20dB L 2 7 L 4 L 3 RF UNIT X44 1360 00 l F UNIT X 4 8 1290 00 61 r I I 8OOHzup 1 I I I I 0 2 Vrms I I L 1 I I I I I oL3 Tracking Adj 5 55MHz I 1 ...

Page 43: ...LOCATION OF ADJUSTMENTS BOTTOM VIEW ...

Page 44: ...o r t P O R T 1 P27 P 2 0 P 2 7 I n p u t a n d o u t p u t p o r t P O R T 2 P26 DBo DBI D a t a b u s P25 TO T I T e s t P24 PI7 I N T I n t e r r u p t P16 R D R e a d PIS WR W r i t e P14 A L E A d d r e s s l a t c h e n a b l e P13 P S E N P r o g r a m s t o r e e n a b l e P12 R E S E T R e s e t Pl1 3 3 S i n g l e s t e p P10 EA E x t e r n a l a c c e s s Vm SV X T A L 1 2 C r y s t a l...

Page 45: ...C9 I I I SN74LS247N Drtver O splay 027 38 10 4 7 2SA10151 Y b Y 9 B T 12 I I10 110 X I 2 Expander Expander IC17 P l C l 0 3 pPDB243C pPD8243C I 4 i 5 4 6 09998MHz T I VC0 2 Ac ive PD 2 M P U L P F I 015 16 I C IC24 Q19 21 l C l l pPD8048C 155 2SC18151Y iX2 2SC1775E X3 TC5081P Input M P U Control 2KH2 20KHz 5WKHr 5MHz O vider IC3 6 1c7 IC2 1OMHz OSC 7 4 T C 4 5 1 P TC4027 P 2SC1 3 5 9Y x 2 o q OM X...

Page 46: ...IS mixed with the output of VCO 2 5 4 6 09998 MHz and is converted to 880 1560 kHz This output after amplification is coupled to Programmable 1 0 MHz reference frequency to convert the output to 4 0 7 996 MHz This output is ampllfled and coupled to P r o g r a m m a b l e D v l d e r 1 I C 12 w h e r e t is frequency divided according to the division data from the microprocessor into a 2 kHz s gna...

Page 47: ... or less 3 dB or less 4 dB or less 35 dB or less with n 455k 100 kHz 1 5 kf1 CH IHIGH PROGIWMN COUNTER 4 l l I I RESIDENT ROW lHlGW 41 I tK 8 I PORT 110 I a I I I 7 1 DECODE I 1 1 EXPANSION TO fiMORE l O AND MEMORY PORT 0 IBUS BUFFER I AND LOW PC TEMP REG CONTROL AND TIMING ACC BIT TEST DATA STORE INT RESET PROG EA XTALI XTAL 2 ALE PSEN SS V V 1 I 1 1 1 1 V 7 L l A RESIDENT IUTCRRUCT I I T I A L I...

Page 48: ...utput Port 2 P 4 0 P43 Input Output port Port 4 p50 P 5 3 Input Output port Port 5 PSO p63 Input Output port Port 6 P 7 0 P 7 3 Input Output port Port 7 c3 Chip Select PROG Program pulse lnput Output port Port 2 Rating 9 0V 270 mW Ta 75 C 30 75 C 40 t 125 C CONTROL RESET CIRCUIT PORTS Maximum Rating Ta 25 C Fig 15 pPD8243C DIGITAL UNIT IC10 17 Rating 0 5 7V 0 5 7V 0 5 7V 0 70 C 60 150 C Item Opera...

Page 49: ... 7 J3 Dl63 2 2 cDl5 MAIN Q3 2SA496 Y RIT MEMORY VFO D1 7 8 13 14 IS1555 D2 5 9 10 12 V06B c E c G T p G h y u T INPUT f D6 D l 8 WZ 150 SLP 144 D l 9 XZ 049 D15 17 TLR 205 OUTPUT ENCODER UNIT X54 1580 00 a ON1 105 Max Rating Round screw V Foil side Smooth sides in Solder sensor plate A and B ...

Page 50: ... IC8 TC5032P IC9 SN74LS247N IC10 17 pPD8243C IC11 pPD8048C 155 IC12 TC9122P lC13 24 TC5081 P IC14 pPC1037H IC18 MC14569B IC19 HD74LS151P lC25 27 SN16913P D l 2 4 5 13 31 33 35 38 IS1555 D3 10 12 32 36 1SV54GC D6 8 1 1 IS1587 D9 WZ 050 D37 WZ 061 Attachment direction of ...

Page 51: ... 2SC1815 Y 2SC1959 Y 2SD880 Y 3SK73 GR HD74LS151P LM358P MC 14569B SN16913P SN74LS90N SN74LS247N TA78L012AP TC4011BP TC4027BP TC4518BP TC5032P TC508 1P TC9 122P pPC1037H pPC14305H pPD8048C 155 pPD8243C Cap Escutcheon glass Front glass A Front glass B Dial scale 0 Warranty card K Operating manual K W Operating manual TI 8P DIN socket Pin plug Pin jack AC cord with plug K AC cord with plug W AC cord...

Page 52: ...H050C CC45SLlH220J C9 1 0456 05 CC45SLlHlOlJ CC45SL1 H221J CC45SL l H101J CC45SLlH390J CC45SLlH470J CC45SL1 H331J Parts No p p CC45CHlH070D CC45SLlH150J CC45RHlH820J CC45RHlH020C CC45RHlH820J CC45SL1H221J CC45CHIlHOlOC CC45RHlHlOlJ CC45RHlH020C CC45RHlHlOlJ CC45RHlH020C CC45RHlHlOlJ CE04WlC470M CC45RHlH050C CC45SLlHlOlJ CQ92M 1H562K CQ92MlH123K CQ92M 1H562K CQ92MlH473K C91 0456 05 CE04WIA221M C91 ...

Page 53: ...terminal Cushion Ceramic trimmer 70pF Ceramic trimmer 50pF Ferri inductor 1mH Ferri inductor 47pH Ferri inductor 150pH Ferri inductor 470pH Ferri inductor 220pH Ferri inductor 3 3mH Ferri inductor 100pH Ferri inductor 470pH Ferri inductor 15pH Ferri inductor 470pH Ferri inductor 150pH Ferri inductor 15pH Ferri inductor 150pH Ferri inductor 150pM Ferri inductor 1mH Ferri inductor 150pH Ferri induct...

Page 54: ......

Page 55: ... alignment Same as above Spec f cat on I More than 5 000 9 kHz More than 14 500 9 Less than 4 999 1 kHz Lessthan 14 499 1 5 000 0 kHz 14 500 0 800Hzi50 Hz Measurement Adjustment Test equipment scope VR1 VR2 Phase adjust ment screw EN Ter minal 51 I P 1 EN21 W i tal termi nal of Connec tors or W l I Un t o 1 s located in the mi m ddle of points AandConEN1 F counter Fcounter Oscillo Enco der EN2 ter...

Page 56: ...he Measurement 220V Green or 240V Blue transformer winding 4 Change the AC fuse from 0 5A to 0 3A Tag the power cord at the back of the unit to indicate that the transformer is wired for 240V AC and the power fuse should be 0 3A and not 0 5A 5 Replace the top cover and cable up to verify your work Test equipment MODE VFO 230 1 FUNCTION REC VFO DISPLAY Dlal 2 0 0 Connect the SSG output to the ANT t...

Page 57: ...UTPrn INPUT NO DIGITAL UNIT X54 l570 OOl 0 1 2SDB8O YI 01 7 8 13 14 IS1555 0151117 TLR 205 0 2 4 6 2SCIBISIYl D2 5 9 10 12 vO68 0 1 8 SLP 144 0 3 2SA496 11 0 6 WZ IS0 D 19 XZ 049 0 1 ZS I C I LM r 7 qi l l N r 0 l yr DL ...

Page 58: ... Note Wave forms are d splayedat 0 0 VFO output 5 5 MHz ...

Page 59: ...ate Panel 1 8 MHz only 20 2397 03 20 to 500Q unbalanced 100W at max Knob K23 0720 04 Knob skirts Through l newattmeter Knob K23 0719 04 1 8 to 3 0 MHz Main knob Up to 20 200W switched AT 230 General 2 1 07 14 04 Forward or reflected power switched 3 4 kg 7 5 Ibs approx 50Q Better than I 0 of full scale Toroid core direction coupler 1 1 to 10 4W UHF type 50Q UHF type UHF type Stud and wing nut W 18...

Page 60: ...R 1 V R2 VR3 VR4 R3 R4 Ref No C1 2 C6 R1 2 D1 2 L1 2 2 POWER METER ADJUSTMENT 1 Test Equipment Connection Parts No R12 1024 05 R12 4020 05 R12 3420 08 R05 3407 08 RD14BB2E511J RD14BB2E104J S36 2026 15 Parts No FM05ZC150J5 FM05ZC150J5 RD14BB2E510J V1 1 7763 26 L39 0403 08 ANT INPUT DUMMY Fig 1 POWER METER fl TRANSMITTER TRANSCEIVER 0 9 Description Mica 15pF 500V Mica 15pF 500V Carbon resistor 51Q k...

Page 61: ... F05 1531 05 Description Operating manual C 220pF 25V 12P plug 5P terminal Fuse 15A Insulatingwasher Carton case inside Cushion Protective bag Parts No B50 2736 00 CE02WlE221 E08 1207 05 E20 0513 05 F05 1531 05 F29 0414 04 H01 2694 03 H10 2541 04 H25 0029 04 H25 0103 04 H25 0120 04 J 13 0029 05 J41 0024 15 R92 0121 05 R92 0120 05 V30 1161 06 Free up belt 2P plug E08 1207 05 Re marks h h h Protecti...

Page 62: ...TS 830M SCHEMATIC DIAGRAM EXCEPT U S A MARKET The shaded parts indicate the changed circuits from TS 830s to TS 830M COM IS1555 7 D l 0 ALM SIR z FUSE 4A a t AC220V 6 A a t ACl20V ...

Page 63: ...F unit IF unit Con nector No 8 MODE SW S18 3 MODE SW S18 5 Meter SW S13 MIC gain control VR9 Termi nal No 1 1 3 1 1 7 3 From Q18 on AF unlt b as to MlXer TX stop signal for WARC Bias for control grid V1 Transmitter ncrernental tuning Meter select switch S13 arm Relay t 9 V on TX Receiver RIT ON Relay t 9Von RX Meter voltage Bias voltage 6V RITSW RIT toVFO Bias for control grid Final Transm tterALC...

Page 64: ... Counter unit 0 5 SW S7 1 t 0 5 SW S7 2 IFS TXC RLS Unit switch DH SWS12 EXT VFO socket PLL unit PLL unit RF unit RF unit RF unit FG PD2 DRV 8 9 2 Con nector No 0 0 0 RLC RIT VFB VFO 1 2 3 0 1 G 2 1 2 3 1 2 3 1 2 3 4 1 2 1 2 1 G 2 HV 800 3008 2108 210A STB C SG2 TUN 12 SGS SG1 PD2 PD1 Termi nal No 6 1 2 RLR G ANT MKR AGC RIF G TOF 12 MXB 12 TIF G 300A DRB RBI H 210A UV NC DRV VCO NFB Hlgh voltage ...

Page 65: ...SLP 144 f MV 13 GREEN41 W TYPE I I T X TYPE I I x TYPE AC240V ...

Page 66: ......

Page 67: ......

Page 68: ...N I L E V E L 1K H z Doubler 0SC gun AMP 2SC46OB 2 2SC1815 Y1 2SC1815 Y 74LS90N 7 4 L S 9 0 h 5 v A V R C A R OSC B u f f AMP M I X B A N D SW 5M 5 5 6 OMHz i t C O U N T E R DISPLAY U N I T B L A N K I N G ...

Page 69: ... I X B u f f A M P I V BT B u f f AMP I Y 3SK73 GR 2SC1815 Y s c i 9 5 9 Y B u f f AMP Noise A M P Noise AMP N B Gate Drive 2SK19 GR 2SC460 B a2 2SC460 B 2SC1815 Y 4 18 21 24 5 28 N B L E V E L L VCO Speake Rated l lmpeda Freque Filte L H H H Filte Dimens1 2sC1815 BL Buff A M P VCO OSCI V C O OSC2 V C O OSC3 VCO OSC4 V C O OSC5 VCO OSC6 f f AMP 7751E 3 2 1 8 1 5 y 2 1 9 2 3 0 2SC460B 2SC460B 2 S K...

Page 70: ...achTS lnddstriestrasse 8A West Germany TRIO KENWOOO AUSTRALIA PTV LTD 30 Wh t ng Street Artarmon Sydney N S W Australla 2064 Ref No 1981 3 PRINTED IN JAPAN 851 0916 10 K W T X 1650 Parts No A01 0786 03 A01 0789 02 A20 2399 05 A20 2400 05 B46 0058 00 850 2759 00 850 2760 00 E l i 0404 05 E12 0001 05 E13 0361 05 E14 0101 05 E30 1610 05 G53 0502 04 H01 2723 04 H01 2724 04 H10 2523 02 H 10 2525 02 H20...

Page 71: ... 830S M SERVICE MANUAL ERRATA Voltages in this Schematic Diagram are correct Refer to TS 830S M page 63 1 1 F I N A L U N l T X 5 6 1 3 8 0 0 0 I I O 1981 3 PRINTED IN JAPAN For 851 0916 10 K W TI XI 1650 ...

Search results

Summary of Contents for VFO-230

Reviews:

Related manuals for VFO-230

Brands by name

Popular brands

Kenwood VFO-230, Service Manual

Search results

Summary of Contents for VFO-230

Reviews:

Related manuals for VFO-230

Brands by name

Popular brands