Kenwood TM-V708A Service Manual Download Page 1

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144/440MHz FM DUAL BANDER

TM-V708A

2004-11 PRINTED IN JAPAN

B51-8704-00 (S) 237

SERVICE MANUAL

CIRCUIT DESCRIPTION ......................................... 2

SEMICONDUCTOR DATA ................................... 14

COMPONENTS DESCRIPTION ........................... 17

TERMINAL FUNCTION ........................................ 19

PARTS LIST .......................................................... 20

EXPLODED VIEW ................................................. 31

PACKING .............................................................. 32

ADJUSTMENT ..................................................... 33

PC BOARD

TX-RX UNIT (X57-5860-12) ............................ 47

PANEL UNIT (X54-3290-00) ........................... 53

SCHEMATIC DIAGRAM ....................................... 57

BLOCK DIAGRAM ................................................ 67

INTERCONNECTION DIAGRAM ......................... 69

LEVEL DIAGRAM ................................................. 70

OPTION (PG-4X) .................................................. 71

SPECIFICATIONS .............................. BACK COVER

CONTENTS

Cabinet (UPPER)
(A01-2122-23)

Knob (ENC)
(K29-5381-03)

Panel (DISPLAY)
(A62-0775-03)

Microphone
(T91-0636-05)

Knob (VOL)
(K29-5222-03)

Knob (SQL)
(K29-5223-03)

Button knob
(K29-5400-11)

Panel (MAIN UNIT)
(A62-1122-03)

Summary of Contents for TM-V708A

Page 1: ...32 ADJUSTMENT 33 PC BOARD TX RX UNIT X57 5860 12 47 PANEL UNIT X54 3290 00 53 SCHEMATIC DIAGRAM 57 BLOCK DIAGRAM 67 INTERCONNECTION DIAGRAM 69 LEVEL DIAGRAM 70 OPTION PG 4X 71 SPECIFICATIONS BACK COVER CONTENTS Cabinet UPPER A01 2122 23 Knob ENC K29 5381 03 Panel DISPLAY A62 0775 03 Microphone T91 0636 05 Knob VOL K29 5222 03 Knob SQL K29 5223 03 Button knob K29 5400 11 Button knob K29 5400 11 Pan...

Page 2: ...ansceiver planned and designed for amateur radio communications and has the following features 1 Is capable of receiving packet data on one band while receiving audio on another band 2 Enhanced Programmable Memory PM channels store virtually entire current operating environments for your quick recall 3 Contains a total of 200 memory channels to program frequencies and other various data Allows eac...

Page 3: ...a 12 8MHz crystal oscillator connected to the VHF and UHF PLL ICs This reference frequency is used for both PLL circuits The second local oscillator for the VHF band uses the tripled 12 8MHz reference oscillator frequency The 45 05MHz second local oscillator for the UHF band is generated by the IF IC crystal oscillator circuit MIC AMP MIC SP OSC OSC AF AMP PLL 1 PLL 2 VCO 1 VCO 2 DET DET IF 1 IF 2...

Page 4: ...s detected to generate an audio signal 2 2 Main UHF Receiver The incoming signal from the antenna passes through a filter circuit and enters the RF amplifier Q508 The amplified signal passes through the SAW filter L517 is amplified by another RF amplifier Q505 Then it passes through the LC filter L508 and enters the single balanced mixer Q501 Q502 The frequency of the signal is converted by the fi...

Page 5: ... IC400 The signal is converted to the 455kHz second IF signal using the second local oscillator Upper heterodyne Then the signal is detected to generate an audio signal 2 4 Sub UHF Receiver The signal distributed from the RF amplifier Q508 at the main UHF receiver circuit passes through a lifter circuit Then it enters the single balanced mixer Q200 Q201 The signal frequency is converted by the fir...

Page 6: ... 2dB or less within 450 5kHz Insertion loss 6dB or less at minimum lost point Guaranteed attenuation 35dB or more within 450 100kHz I O matching 1 5kΩ terminating impedance Table1 MCF L71 0491 15 TX RX Unit XF100 Table2 Ceramic filter L72 0979 05 TX RX Unit CF101 Table3 MCF L71 0409 15 TX RX Unit XF400 Table4 Ceramic filter L72 0981 05 TX RX Unit CF401 2 5 Audio Circuit The detected VHF audio sign...

Page 7: ...signal RDV and RDU is not de emphasized A0 RDV from IF RAU from IF RDU from IF BEEP sound from CPU VS 3 vocal sound of option DTMF 1750 signal from CPU DTMF sound from MIC To DTMF decoder To CPU for DCS CT CSS decode To PR9 DATA terminal To PR1 DATA terminal To modulation line to transmit DTMF 1750 To SP1 INT SP side AMP To SP2 side AMP ...

Page 8: ... by IC300 and modulates the reference oscillation circuit 3 2 Transmitter circuit The VHF VCO output is amplified by 3 stage amplifier RF amplifier Q6 and driver amplifier Q8 Q9 It is amplified to the final output by the power module The signal passes through antenna switch D14 D15 and low pass lifter and is fed to the antenna The UHF VCO output is amplified by 4 stage amplifier RF amplifier Q304 ...

Page 9: ... near the power module is monitored by the CPU IC604 If it becomes high temperature the APC voltage is controlled to cool down the temperature 4 PLL circuit 4 1 Reference oscillator circuit The 12 8MHz signal is generated by the crystal oscillator circuit IC1 and IC301 and internally divided to generate 5kHz or 6 25kHz reference frequency The 12 8MHz signal on IC1 side is tripled by Q102 to obtain...

Page 10: ...ough the interrupt pin stores data in the EEPROM IC602 and shuts the power off CPU IC604 DISPLAY X54 329 Fig 12 Structure of non synchronized serial communication 5 2 Voltage detection processing The CPU IC604 monitors and process various voltage status at IC604 A D ports The squelch voltage is input from the IF IC and a change in the noise voltage is detected to control squelch The S meter voltag...

Page 11: ...to J801 Pins 5 of the multiplexer IC807 IC808 go low the AF signals AO 0 and AO 1 are added and input to the power amp IC806 When an external speaker is connected to J801 Pins 5 of the multiplexer IC18 go high and AO 0 and AO 1 are input separately to the power amp 6 3 Microphone Key Input The microphone UP DOWN and function keys are connected to the microprocessor analog input The voltage when a ...

Page 12: ...ions are 1200bps or 9600bps mode For 1200bps mode the transmission modulation signals pass through the analog switch IC803 and are input to IC801 Pin 6 The signals pass through the pre emphasis Q801 Q802 are adjusted by the electronic volume and are input to the VCO For 9600bps mode the transmission modulation signals pass through IC803 and amplified by the tone amp IC802 Then it is adjusted by th...

Page 13: ...serted in order to protect the microprocessor ports 8 2 Key Volume Input circuit Circuits to operate the panel section keys are connected to each microprocessor port The PSW key is pulled up and the other keys are pulled up with software within the microprocessor Rotary encoder operating circuits are connected directly to the microprocessor The control divides the power supply voltage reads the A ...

Page 14: ... I F6 key input L 33 TXD0 O Serial port for connecting to TX RX unit 34 RXD0 I Serial port for connecting to TX RX unit 35 NC I Not used VCC 36 NC I Not used VCC 37 41 NC I Not used 42 RD Read signal 43 NC Not used 44 WR Write signal 45 LCDA0 O LCD Address 0 46 LCDCD2 O LCD chip select 2 47 LCDCD1 O LCD chip select 1 48 CS0 Flash ROM chip select signal 49 A19 Not used Open 50 59 A18 9 Address bus ...

Page 15: ...MIC PWR I Remote control keys DOWN MR PF power switch L 23 AVDD Connect to VDD 24 AVREF Connect to VDD 25 THP I Temperature protection 26 SQ14 I Noise level A D input VHF IF 27 SW14 I S meter level A D input VHF IF 28 SQ43 I Noise level A D input UHF IF 29 SM43 I S meter level A D input UHF IF 30 P_DWAN I Remote control key A D input UP CALL VFO 31 P_UPAN I Remote control key A D input DOWN MR PF ...

Page 16: ...FDET I Data detection 76 VS3NAR O VS 3 NAR 77 VS3RST O VS 3 RESET 78 VS3CS O VS 3 Chip Select 79 VS3DT O VS 3 DATA 80 VS3CK O VS 3 CLK 81 VDD Positive power supply 82 83 NC O Not used 84 DA_EN O DAC Enable output M62364FP 85 NC 86 NC O Not used 87 BEEP O Beep sound output 88 NC 89 NC O Not used 90 E12 O 91 E96 O 92 I12 O 93 I96 O 94 VPP I Flash writing 10V application pin Normal L pulse 95 NC 96 E...

Page 17: ...Doubling circuit VHF2nd LO doubling circuit Q103 Power switch R5V Q104 Power switch R5AM Q105 IF amp VHF Q106 IF amp VHF Q107 IF amp VHF Q108 AF amp VHF Q110 AF amp VHF Q111 AGC amp VHF Q112 IF amp VHF Q113 AGC Q200 1st Mixer VHF Q201 1st Mixer VHF Q202 RF amp VHF Q203 RF amp VHF Q204 Change switch VHF Q205 RF amp VHF Q207 AGC control VHF Q208 APC control VHF UHF Q209 APC control VHF UHF Q210 RF a...

Page 18: ...n B band D303 Step down Charge pump D304 Quick charge B band VCO ripple filter COMPONENTS DESCRIPTION Ref No Application Function Operation Condition Compatibility Ref No Application Function Operation Condition Compatibility D305 RF switch UHF LO D306 RF switch UHF TX D307 RF switch UHF LO D309 RF switch UHF LO D310 RF switch UHF LO D312 UHF Drive circuit bias UHF D313 Over voltage prevention D31...

Page 19: ...CN1 1 D7 LCD driver data 2 D6 LCD driver data 3 D5 LCD driver data 4 D4 LCD driver data 5 D3 LCD driver data 6 D2 LCD driver data 7 D1 LCD driver data 8 D0 LCD driver data 9 RD LCD driver RD 10 WR LCD driver WR 11 A0 LCD driver A0 12 GND GND 13 CS2 LCD driver chip select 14 CS1 LCD driver chip select 15 RES LCD driver reset 16 VDD LCD driver VDD 17 VL Illumination LED control 18 VL Illumination LE...

Page 20: ...1J473J CHIP R 47K J 1 16W R8 R92 0670 05 CHIP R 0 OHM R9 10 RK73FB2A560J CHIP R 56 J 1 10W R11 12 RK73FB2A181J CHIP R 180 J 1 10W R13 14 RK73FB2A271J CHIP R 270 J 1 10W R15 R92 1252 05 CHIP R 0 OHM J 1 16W R17 22 RK73GB1J102J CHIP R 1 0K J 1 16W R25 RK73GB1J103J CHIP R 10K J 1 16W 1 1B A01 2122 23 METALLIC CABINET UPPER 2 3B A01 2172 13 METALLIC CABINET LOWER 3 3A A62 0775 03 PANEL DISPLAY 4 2A A6...

Page 21: ... C51 CK73FB1C105K CHIP C 1 0UF K C52 CK73GB1H102K CHIP C 1000PF K C53 CC73GCH1H270J CHIP C 27PF J C54 CK73GB1H102K CHIP C 1000PF K C55 C92 0523 05 CHIP ELE 10UF 16WV C57 CK73GB1H102K CHIP C 1000PF K C58 CC73GCH1H101J CHIP C 100PF J C59 CK73GB1H103K CHIP C 0 010UF K C60 CK73GB1H102K CHIP C 1000PF K C61 CK73GB1H103K CHIP C 0 010UF K C62 C92 0523 05 CHIP ELE 10UF 16WV C65 66 CK73GB1H102K CHIP C 1000P...

Page 22: ...P C 1 0PF B C259 CC73GCH1H220J CHIP C 22PF J C270 CC73GCH1H470J CHIP C 47PF J C301 C92 0606 05 CHIP TAN 4 7UF 10WV C302 CK73GB1H472K CHIP C 4700PF K C303 CK73GB1H103K CHIP C 0 010UF K C304 CC73GCH1H060D CHIP C 6 0PF D C305 CC73GCH1H050C CHIP C 5 0PF C C307 CK73GB1C104K CHIP C 0 10UF K C308 CK73GB1H471K CHIP C 470PF K C309 CK73GB1C473K CHIP C 0 047UF K C310 CC73GCH1H470J CHIP C 47PF J C311 CK73GB1H...

Page 23: ...10PF D C527 528 CK73GB1H471K CHIP C 470PF K C529 CC73GCH1H050C CHIP C 5 0PF C C531 CK73GB1H471K CHIP C 470PF K C532 CC73GCH1H040C CHIP C 4 0PF C C533 CK73GB1H471K CHIP C 470PF K C534 CC73GCH1H050C CHIP C 5 0PF C C535 CC73GCH1H030B CHIP C 3 0PF B C536 537 CK73GB1H102K CHIP C 1000PF K C538 CK73GB1H471K CHIP C 470PF K C539 544 CK73GB1H102K CHIP C 1000PF K C545 CK73GB1H471K CHIP C 470PF K C546 CC73GCH...

Page 24: ...CK73GB1H102K CHIP C 1000PF K C870 CC73GCH1H390J CHIP C 39PF J C871 CK73GB1E183K CHIP C 0 018UF K C872 CK73GB1C473K CHIP C 0 047UF K C900 901 CK73GB1H102K CHIP C 1000PF K C902 C92 0558 05 CHIP ELE 100UF 16WV C903 CK73GB1H103K CHIP C 0 010UF K C904 CK73GB1H102K CHIP C 1000PF K C905 C92 0610 05 CHIP ELE 47UF 16WV C906 CK73GB1C104K CHIP C 0 10UF K C907 908 C92 0610 05 CHIP ELE 47UF 16WV C909 910 CK73G...

Page 25: ... SMALL FIXED INDUCTOR 100NH L525 L40 1575 92 SMALL FIXED INDUCTOR 15NH L526 L40 1085 92 SMALL FIXED INDUCTOR 100NH L527 528 L40 5675 92 SMALL FIXED INDUCTOR 56NH L529 530 L40 3975 92 SMALL FIXED INDUCTOR 39NH L531 532 L40 1075 92 SMALL FIXED INDUCTOR 10NH L602 603 L92 0131 05 CHIP FERRITE X1 L77 1831 05 CRYSTAL RESONATOR 12 8MHZ X300 L77 1831 05 CRYSTAL RESONATOR 12 8MHZ X400 L77 1478 05 CRYSTAL R...

Page 26: ...01J CHIP R 100 J 1 16W R206 RK73GB1J222J CHIP R 2 2K J 1 16W R207 RK73GB1J104J CHIP R 100K J 1 16W R208 209 RK73GB1J222J CHIP R 2 2K J 1 16W R212 R92 1252 05 CHIP R 0 OHM J 1 16W R215 RK73GB1J184J CHIP R 180K J 1 16W R216 RK73GB1J471J CHIP R 470 J 1 16W R217 RK73GB1J101J CHIP R 100 J 1 16W R220 RK73GB1J683J CHIP R 68K J 1 16W R221 RK73GB1J104J CHIP R 100K J 1 16W R226 RK73GB1J222J CHIP R 2 2K J 1 ...

Page 27: ...470K J 1 16W R418 RK73GB1J102J CHIP R 1 0K J 1 16W R419 RK73GB1J392J CHIP R 3 9K J 1 16W R420 R92 1252 05 CHIP R 0 OHM J 1 16W R422 RK73GB1J103J CHIP R 10K J 1 16W R423 R92 1252 05 CHIP R 0 OHM J 1 16W R425 RK73GB1J274J CHIP R 270K J 1 16W R426 RK73GB1J471J CHIP R 470 J 1 16W R427 RK73GB1J392J CHIP R 3 9K J 1 16W R428 RK73GB1J472J CHIP R 4 7K J 1 16W R429 430 RK73GB1J473J CHIP R 47K J 1 16W R433 R...

Page 28: ...749 RK73GB1J474J CHIP R 470K J 1 16W R750 RK73GB1J333J CHIP R 33K J 1 16W R800 802 R92 1252 05 CHIP R 0 OHM J 1 16W R803 805 RK73GB1J102J CHIP R 1 0K J 1 16W R806 RK73GB1J473J CHIP R 47K J 1 16W R807 RK73GB1J102J CHIP R 1 0K J 1 16W R808 RK73GH1J153D CHIP R 15K D 1 16W R810 RK73GB1J330J CHIP R 33 J 1 16W R811 RK73GH1J153D CHIP R 15K D 1 16W R812 RK73GB1J473J CHIP R 47K J 1 16W R813 RK73GB1J474J CH...

Page 29: ...VARIABLE CAPACITANCE DIODE D302 MA2S111 DIODE D303 DA221 DIODE D304 MA2S111 DIODE D305 306 HSC277 DIODE D307 DAN235E DIODE D309 DAN222 DIODE D310 DAN235E DIODE D312 DA221 DIODE D313 HVU131 DIODE D314 MA4PH633 DIODE D315 HVU131 DIODE D316 XB15A709 DIODE D317 318 MA742 DIODE D500 DAN235E DIODE D502 HSC277 DIODE D503 DAN235E DIODE D505 DAN235E DIODE D507 HSC277 DIODE D509 510 HVC131 DIODE D602 MA2S11...

Page 30: ...Q306 UMC4N TRANSISTOR Q307 2SC4093 R27 TRANSISTOR Q308 2SC5108 Y TRANSISTOR Q309 2SC3357 TRANSISTOR Q310 2SC2954 TRANSISTOR Q402 2SC4617 R TRANSISTOR Q404 UMC4N TRANSISTOR Q405 2SC4617 R TRANSISTOR Q406 2SC5108 Y TRANSISTOR Q500 2SC4997 TRANSISTOR Q501 502 2SK302 GR FET Q503 3SK239A FET Q505 2SK1875 V FET Q506 2SC5108 Y TRANSISTOR Q507 508 3SK239A FET Q509 2SC5066 O TRANSISTOR Q601 2SC4617 R TRANS...

Page 31: ...N80 2010 45 N80 2610 45 N83 2608 46 N87 2606 46 S13 VR1 VR2 SP 1 26 33 31 33 22 79 30 24 34 Fuse 81 32 37 42 50 78 14 14 G F G Gx2 Gx2 Cx4 Gx2 PANEL UNIT X54 A 3 X54 B 3 X54 C 3 TX RX UNIT X57 38 21 701 702 39 71 5 2 43 49 40 27 13 75 45 73 72 12 18 74 44 46 4 11 10 Bx2 Bx2 B Dx2 3 A A 39 39 G G Ex2 Fx2 700 Chassis EXPLODED VIEW A B 1 2 3 ...

Page 32: ...Bracket G13 1757 04 58 Protection Bag H25 0085 04 57 Protection sheet H21 0766 04 65 Holder J19 1526 04 76 Screw set N99 0382 05 77 Screw set N99 2014 05 66 Bracket Main unit J29 0628 23 56 Carton board H13 1106 24 52 Packing FixtureX2 H12 3074 12 34 Fuse 15A F51 0017 15 36 Fuse 20A F51 0018 05 70 Bracket J29 0664 13 51 Inner Carton Case H02 0614 03 25 Moduler Cable E30 3391 05 23 DC Cord E30 2111...

Page 33: ...cope High sensitivity with horizontal input terminal 12 Standard signal generator SSG The standard signal generator must be able to generate the 1GHz band frequencies and vary the amplitude and frequency Output 133dBm to greater than 13dBm 13 Dummy load for AF 8Ω about 5W 14 Noise generator The noise generator must be able to generate noise similar to ignition noise containing high frequency compo...

Page 34: ...QC 4 PR9 2 DE B Short plug Terminals 3 and 6 are short circuited Reference 3 PKS SEND switch for DATA terminal Connect PTT output If PKS is set to L data are sent and the microphone will be mute 6 SQC Squelch control output This outputs squelch control output A Approx 1m E 1 Brown 2 Red 3 Orange 4 Yellow 5 Green 6 Blue Shield wire Orange wire Blue wire Short circuit Soldering Join these DIN pins C...

Page 35: ...y VHF TC300 Transmission frequency UHF L204 BPF VHF L207 BPF VHF L209 BPF VHF L102 AF distortion VHF L200 AF distortion VHF L401 AF distortion UHF L500 AF distortion UHF F MHz TONE REV LOW MUTE CTRL VOL BAND SEL BAND A VOL BAND SEL BAND B SQL BAND A PWR PM MNU CALL VFO MR Encoder SQL BAND B SP ANT Test point SMV BPF L209 L207 L204 L401 L102 L200 L500 TC300 TC1 SMV ...

Page 36: ...e screen and adjustment can be performed See the figure below 2 S meter the first segment ON When specified SSG input applied to the antenna connector and the S1 key is pressed a value is set so that the first segment of the S meter turns on 3 S meter all segments ON When specified SSG input applied to the antenna connector and the S7 key is pressed a value is set so that the all segment of the S ...

Page 37: ...ton and press the SET key to set the adjustment value F Tone deviation values set independently for 144MHz and 430MHz 1 Press the and keys to display TONE DEV The current Tone deviation setting is display on the screen See the figure below 2 Connect the linear detector and oscilloscope to the antenna connector Connect a microphone to the microphone connector 3 When the T SEL key is pressed the ton...

Page 38: ...el names Parameter Band A Band B VFO freq 144 000MHz 440 000MHz Freq step 5kHz 25kHz Tone freq 88 5Hz 88 5Hz 4 Press to select Partial VFO Reset PM Reset or Full Reset then press OK A confirmation message appears Press ESC to quit resetting 5 Press OK After switching the power OFF you may press VFO POWER ON for Partial Reset or MR POWER ON for Full Reset This allows you to skip steps 1 to 4 You ca...

Page 39: ... Switch to adjustment mode and carry out the operations for Item A Band A 1 FREQ 146 350MHz SSG 0 07µV 130dBm SSG DEV 3kHz MOD 1kHz 2 FREQ 127 100MHz SSG 0 07µV 130dBm SSG DEV 3kHz MOD 1kHz 3 FREQ 223 100MHz SSG 0 158µV 123dBm SSG DEV 3kHz MOD 1kHz SSG Rear ANT Oscilloscope panel EXT SP AF V M Distortion meter SSG Rear ANT Distortion panel EXT SP meter Oscilloscope AF V M SSG Rear ANT panel EXT SP...

Page 40: ... 11 FREQ 444 350MHz SSG 0 07µV 130dBm SSG DEV 3kHz MOD 1kHz 12 FREQ 390 100MHz SSG 0 40µV 115dBm SSG DEV 3kHz MOD 1kHz 13 FREQ 444 350MHz SSG 0 20µV 121dBm SSG MOD 60 1kHz 14 FREQ 390 100MHz SSG 0 707µV 110dBm SSG MOD 60 1kHz 1 Band A FREQ 146 050MHz SSG OFF Set to the point where noise will be erased by turning the squelch knob 2 SSG 0 126µV 125dBm 3 Squelch knob clockwise MAX 4 Band B FREQ 444 1...

Page 41: ... 118dBm 2S7 SSG 3 54µV 96dBm 3 FREQ 223 100MHz SSG DEV 3kHz MOD 1kHz 1S1 SSG 0 707µV 110dBm 2S7 SSG 7 94µV 89dBm Squelch open BUSY lights on AF output disappear BUSY lights off SQL knob position 8 00 11 00 BUSY lights off Squelch open BUSY lights on AF output disappear BUSY lights off SQL knob position 8 00 11 00 BUSY lights off Squelch open BUSY lights on AF output disappear BUSY lights off One S...

Page 42: ...G 0 707µV 110dBm 2S7 SSG 7 94µV 89dBm 9 FREQ 444 350MHz SSG MOD 60 1kHz 1S1 SSG 0 28µV 118dBm 2S7 SSG 39 8µV 75dBm 10 FREQ 390 100MHz SSG MOD 60 1kHz 1S1 SSG 1 30µV 105dBm 2S7 SSG 39 8µV 75dBm SSG Rear ANT panel One Segment in S meter lights All segments in S meter light One Segment in S meter lights All segments in S meter light One Segment in S meter lights All segments in S meter light One Segm...

Page 43: ...MHz SSG 0 501µV 113dBm 5 SSG 1 99µV 101dBm 6 SSG 6 3µV 91dBm Item Condition One Segment in S meter lights All segments in S meter light One Segment in S meter lights All segments in S meter light One Segment in S meter lights All segments in S meter light One Segment in S meter lights All segments in S meter light More than one segment in S meter lights Six or smaller segments in S meter light All...

Page 44: ... FREQ 146 000MHz Transmission 2 POWER MID Transmission 3 POWER MAX Transmission 4 POWER HI Transmission 5 FREQ 144 000MHz FREQ 147 975MHz POWER HI Transmission 6 POWER MID Transmission 7 POWER LOW Transmission For 1 2 and 4 switch to adjustment mode and carry out the operations for Item C 1 POWER LOW FREQ 444 000MHz Transmission 2 POWER MID Transmission 3 POWER MAX Transmission 4 POWER HI FREQ 444...

Page 45: ... 2 FREQ 146 100MHz TONE 88 5Hz Transmission 3 FREQ 445 100MHz TONE 88 5Hz Transmission 2 2 POWER write or check Band B 3 DEV write or check 4 DCS balance adjustment 5 TONE DEV write or check Band A Band B Power Rear ANT meter panel Ammeter Power meter Rear ANT Linear panel detector Oscilloscope AG AF V M Power meter Rear ANT Linear panel detector Oscilloscope Power meter Rear ANT Linear panel dete...

Page 46: ...Hz Transmission 2 FREQ 146 200MHz Transmission 3 FREQ 445 200MHz Transmission 4 FREQ 445 200MHz Transmission 1 Band A FREQ 146 000MHz POWER HI ANT short circuit and open 2 Band B FREQ 444 000MHz POWER HI ANT short circuit and open Transmission Power meter Rear ANT Linear panel detector Oscilloscope Power meter Rear ANT Linear panel detector Oscilloscope Ammeter Check Display Encoder Write SET key ...

Page 47: ...C727 C726 C725 C307 C308 C309 C311 Q914 IC302 IC2 R418 C857 C829 C832 R841 C833 IC802 1 3 5 4 C244 L11 C62 C55 C57 C61 C54 R158 C129 R125 C123 R122 R149 C142 R141 R137 C140 C139 C134 R134 Q106 C137 R129 C124 R146 R150 C144 C366 L316 C330 C425 R409 R427 C422 IC101 1 4 8 5 C321 C8 C6 C28 C23 R433 R426 C424 R434 L400 C406 R155 R106 R156 C132 D800 C806 R730 R722 R727 R721 R725 R719 R724 D304 R329 Q303...

Page 48: ... R202 C40 L502 C512 R511 C513 L504 C521 C230 C223 C217 R220 C313 C314 C312 C317 R318 Q301 C315 C316 C318 R388 TC1 C5 C4 Q2 C11 C13 C14 R12 R2 C2 C21 R676 R690 C628 Q905 R504 R502 L512 L511 L509 C526 C525 C383 R517 C519 R514 1 2 4 3 L505 C336 R338 C518 L304 R335 D305 D306 C334 R339 Q906 R500 R336 R506 R343 C338 R340 R342 D309 Q907 1 2 3 5 4 1 2 3 5 4 1 2 3 5 4 1 2 3 5 4 1 2 3 5 4 R518 R521 R529 R51...

Page 49: ...3 R665 R714 R668 R653 R652 R711 R710 R709 R664 R666 R713 R864 R873 R635 R823 F900 C19 C320 R651 R650 R806 R808 Q603 R654 R658 R655 R673 R672 R670 X600 R636 C712 R716 R822 R826 C815 C814 C812 C817 C822 C808 C872 F800 R804 R800 R805 R802 R817 D801 R832 C825 C824 R830 C820 C827 R831 R829 R828 R827 C853 R819 R821 C112 R114 R131 C121 R116 R111 D502 UIN R215 R229 R42 R39 R28 R208 R163 R127 L1 C31 R912 R...

Page 50: ...6 1 32 2 3 4 5 1 Component side Foil side Layer 1 Layer 2 TM V708A PC BOARD C14 IC4 1 25 75 51 26 50 100 76 L5 C5 C1 IC3 1 2 4 5 3 IC2 1 3 5 4 C3 IC1 1 3 5 4 C2 L3 C4 C7 C8 C6 L1 L2 L4 L6 R5 R6 Q1 R3 D2 L7 C12 C11 R22 R21 R43 C9 C10 R15 R4 R2 R20 R18 R19 R17 D1 IC5 1 16 32 17 C15 C16 CN3 CN1 1 20 PB PB VL VL VDD RES CS1 CS2 GND AO WR RD D0 D1 D2 D3 D4 D5 D6 D7 CN2 CP1 CP10 CP11 CP12 CP13 CP14 CP15...

Page 51: ... 25 26 30622M8759GP AT29C020 90TI TC4SB1F 17 16 1 32 2 3 4 5 1 Component side Foil side Layer 1 Layer 2 TM V708A PC BOARD C14 IC4 1 25 75 51 26 50 100 76 L5 C5 C1 IC3 1 2 4 5 3 IC2 1 3 5 4 C3 IC1 1 3 5 4 C2 L3 C4 C7 C8 C6 L1 L2 L4 L6 R5 R6 Q1 R3 D2 L7 C12 C11 R22 R21 R43 C9 C10 R15 R4 R2 R20 R18 R19 R17 D1 IC5 1 16 32 17 C15 C16 CN3 CN1 1 20 PB PB VL VL VDD RES CS1 CS2 GND AO WR RD D0 D1 D2 D3 D4 ...

Page 52: ...A B C D E F G I H J K R S M L 1 2 3 4 5 6 7 N O Q P TM V708A Note The components marked with a dot are parts of layer1 SCHEMATIC DIAGRAM ...

Page 53: ...T U V W X Y Z AB AA AC AD AK AL AF AE AG AH AJ AI 1 2 3 4 5 6 7 TM V708A Note The components marked with a dot are parts of layer1 SCHEMATIC DIAGRAM ...

Page 54: ...AM AN AO AP AQ AR AS AU AT 1 2 3 4 5 6 7 TM V708A SCHEMATIC DIAGRAM Note The components marked with a dot are parts of layer1 ...

Page 55: ...BLOCK DIAGRAM TM V708A TM V708A 68 67 78F4218AGJZXA X57 5860 12 MA4PH633 MA4PH633 ...

Page 56: ...69 TM V708A INTERCONNECTION DIAGRAM X57 5860 12 ...

Page 57: ...D LOW switch is set to HI Note4 The measurements with the power meter except for the ANT connector are the values with the APC off Receiver Section 360mV 360mV VHF IF IC UHF IF IC IC100 IC400 101dBm 109dBm 106dBm 108dBm 105dBm 106dBm 98dBm Q406 Q502 Q501 103dBm Q508 Q505 Q203 100dBm Q202 Q507 Q205 Q200 Q201 Q112 38 85MHz 45 05MHz MAIN VHF MAIN UHF SUB VHF SUB UHF AF AF 105dBm Note1 The 12dB SINAD ...

Page 58: ...3 E30 3395 05 1 MODULAR CABLE 4m PANEL 4 E30 3399 05 1 TRUNK CABLE 4m SP 5 E58 0472 05 1 MODULAR JACK 6 PIN 6 E58 0473 05 1 MODULAR JACK 8 PIN 7 G13 0978 04 1 CUSHION 8 J19 1433 05 2 HOLDER 9 L79 1417 05 2 LINE FILTER 10 N99 2016 05 1 SCREW SET PG 4X MAIN PARTS LIST OPTION PG 4X Extension cable kit 1 3 2 5 6 4 9 8 7 0 ...

Page 59: ...Ω Specifications are subject to change without notice due to advancements in technology Note Receiver specifications apply only when using the main VHF or UHF band They do not apply to the sub VHF or UHF band in VHF VHF or UHF UHF mode SPECIFICATIONS KENWOOD CORPORATION 2967 3 Ishikawa machi Hachioji shi Tokyo 192 8525 Japan KENWOOD U S A CORPORATION P O BOX 22745 2201 East Dominguez Street Long B...

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