Home

TK-768 i TK-768H

1. M sms s ys er 1 TOE mm E ra ia t i I 2 Hi TET TTA L ILE I 2 EL ge TL E 5 TK 68 H SEMICONDUCTOR DATA 19 10 232 data output Rxb RS232C data input 21 48 decoder system clock 1 30 31 xx sea 35 Sb cock or Cos sjen ee M 39 ExtemalPTT T O HO ___ 40 External hook L On hook Off hook VOL up L On VLDN VOL down L On SCN SCN 1 On H 4 AUX E A 1 On 4545 1 MON On D A 7 On H SELF Dealer Test mode enter 17 OK H NG 48 20 11 microphone PTT L Off H On 4 0 55C Srnartrunk power supply OH On E iS j 00000000 5 Microphone mute Unmute H Mute Audio control L Mute Unmute Lupe Scrambler binary data 1 5 B2 Scrambler binary data 2 _ ns 3 56 Scrambler L Off
2. 4 144 53 Fa epe eiu Mores AAAA ANAA NAAA iaiia Jc Pd ipea ca eub vrbi rp ra Red casn n p cll 4 Frequency Synthesizer Unit Mdb Sep tarde gs hd a B cues ees ierra naa ru epi b SEMICONDUCTOR DATA DESCRIPTION OF PARIS LIST EXPLODED VIEW PACKING ADJUSTMENT TERMINAL FUNCTION PC BOARD VIEWS CIRCUIT DIAGRAMS 58 4360 TX RX UNIT TX RX X57 4950 XX PATE A UNTER RS TOP TX RX UNIT CONTROL 57 4950 B 2 ET Tren SPECIFICATIONS How To Etar Each Mode T 24 26 Panel Tuning PSS BS ia 31
3. When the VOLA key is pressed the function num ber increments and when the VOL Y key is pressed the function number decrements When the VOLA VOLF key is held down the func tion number increments or decrements continu ously 4 Change the choice using the SCN D A or the microphone key When the key is pressed the displayed value for the current item is stored into memory and the next item appears The setting items are listed in Table 2 5 When the A key is pressed the initial mode SEL returns Setting Defaults are uncerlined Ma function Monitor Display 4 OFF_ Talk around 1 s Default 12 30 3005 308 Default 1805 li 8 OFF OFF EZ 5 1 EEA n Signaling Horne channel CH1 CH32 1CH 1 95 1 efault CH1 Eb 20 Disabe 11 12 lo 13 OFF TK 68 H REALIGNMENT sr eem n _ Defaults are uncerlined _ Priority channel CH1 CH32 1CH 4 1 D key assignment Look back 0 5 5 05 0 15 15 05 16 05 _ Look back B 17 1 185 15 1 1 m 30 DTMF signaling
4. n e o xU Aauanba1j Asuenbasy ASC GOW oy OON ZHL 18 A3Q Indu 511 181 05 108 si Dv 1308 pareu 81 AxuenbajJ uBi H ANALA Jy div DIA ZOF2I SUJAELI XH X L a iNOS uonoes x1 O 5 UNA __ XH X 1 OSS THAT ME RS Ec d t HV SEH G THE AJQ jeuBrs OSS 4143 gpor Buada sayeads 01 1810 102009 TOA Jy joued ur y AG o 10 paisnfpe si indino gy Jur WALA J y OS ERE TRU 1191000 4 Tg OS 58 SPCI 411610008 0 peuriqo NIS BPZL e 40 na indu L Lax 02 902 9021 8027 910 8020 16 7 SulJAug g 544020 Ep ulgpz sg HBPS 60L INA
5. 71 727 OTM Receiver section Transmitter section indicated 550 output level for maximum OUTPUT Whenever there is no modulation designation standard modulation MOD 1kHz DEV IS indicated Power mater 40 dummy load Deviation meter c 8 Oscilloscope k Frequency istortior counter Distortion meter 3 Panel test mode setting But if this mode is disabled by FPU then begin the USER MODE 4 Panel tuning Tha SCAM switch is held on with turn on tha set The SCAN switch holding about 1 second after turn on the set 1 Sat Panel test moda 2 Sig 1 Transmit and receive 2 CH 3 Sig 1 Less than 8 3V Transmit and TK 68 H Receiver Section 1 Sensitivity 2 Maximum power check 4 Signaling balance 1 Set Panel tuning mode Condition 1 Set Panel tuning moda Tuning item CH 2 5ig 1 556 frequency 550 output 11B8dBm 556 MOD 1kHz AF output 0 45 40 2 Tuning itern 5C CH 1 Sig 1 550 frequency 3 Tuning item CH 3 Sig 1 550 frequency fRXICENTERI Tuning itam 1 CH 1 Sig 1 550 frequency fRXICENTERI 556 output Value when 3dB Subtracted from the sensitivity value of 1248 SINAD 550 MOD 1kHz ADJUSTMENT Adjustment Up
6. Sel call Inter mediate code 0 8 A D Revert channel 20 IS OFF A D 32 OFF Last called ED Auto reset time OFF 33 Last used 1 155 15 33 10 Selected Priority 17 Priority T B 17 8 LI Call alert transpond F Call alert Transpond Call alert Transpand ID code Transpond Transpond coda 4 35 Clear to transpond YES isab 36 OFF 34 OFF rx TX dwell time 34 2 34 3 34 4 Dropout delay 0 5 5 0s 0 5s time Default 3 05 Offhook scan Enable 20 or m Sene ea 50 200ms ms 23 50 Fest it doy ne 50 50 Disconnact Z Both 25 25 Tac 27 hold time 27 5 m On Fog eo x 000 39 000 39 FFFFF key ID input key Clear Note Set the channels befor setting the functions When both and signaling are used the first digit delay should be set to longer If setting of tha signaling is changed the ID s of the all channels will be initialized to 000 i 37_ __ 38 FFFFF SE idi Store and send 14 2 Eer
7. a 44 50 54 B doi B Ph m Bh im m p nm P F m m E IE m FE E m m m s mis m mms mG 26 29 34 36 37 an ot s 39 40 41 41 63 14 76 77 87 94 ais OF TK 768 H GENERAL INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment contains all re quired service information for the equipment and is current as of the publication data Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions These are issued as re quired ORDERING REPLACEMENT PARTS When ordering replacement parts or equipment in formation the full part identification number should be included This applies to all parts components kits or chassis the part number is not known include the chassis or kit number of which it is a part and a suffi cient description of the required component for proper identification DESTINATION uer destin tion range ose D M 768 2 136 156 TK768 D M2 136 16 TK 768H D 136 156 PERSONNEL SAFETY The following precautions are recommended for personnel safety DO NOT transmit if someone is within two feet 0 6 meter
8. A 8 CPU 4 CPU TMS it DTMF CHO 6 4 985 PLL CPU 1 209 8080 60 73 D Anteo 58 88 ER to Bel ella 10202 Fas oa 768 CIRCUIT DESCRIPTION fix AH 6 5 Horn control The horn switch consisting of Q13 Q14 and Q24 controls the horn relay It is supplied by the dealer to provide the external horn alert function Q24 disables horn alert turning on when its base is high to inhibit the function Normally the output from IC10 is low Q13 is off the base of 014 is about and 014 is off When horn alert is enabled the output from IC10 goes high and Q13 turns on The base cur rent flows through R61 to Q14 to turn Q14 on Q14 can sink a maximum of 100mA If the optional KAP 1 is used it can drive up to 6 5 RB 838013 014 Al 024 fe 024 6 IHE 024 my3ERR HJ Q24 538 RI BE IClO f H 013 0 W IC10 REFS QI Sil Gri R614 Q14 Brad 014 Sext 014 ML MRA n i NN Dg zb d nr 409 IGN 4B Y
9. n cha r 7 a TU RETINET PC RUE daos UH T K 768 M KEH KE NWOO D SERVICE MANUAL TT amp 1896 10 PRINTED IN JAPAN B51 8329 00 N 581 Microphone TK 768 H T91 0552 05 Cabinet Upper 01 2112 03 L KENWOOD Panel assy Front glass Key top Rubber 2 0449 13 10 1230 04 29 5081 02 768 D type Microphone 91 0553 05 4 KENWOOD TK 768 H CONTENTS GENERAL REALIGNMENT 1 Modes Self Programing DC T Panel Test Mode m m wh Transceiver 7 Memory INSTALLATION 1 Accessory Connection Cable KCT 19 Option M T 2 Ignition Sense Cable KCT 18 Option 3 Emergency Mode 4 Horn Light Unit Option SERRA PE EE 5 External Speaker B Fitting the Control Panel Upside D Down detis eripi evi CIRCUIT DESCRIPTION 1 Circuit Configuration by Frequency
10. abi IG 016 POPRI ER RES 1 WANS tra Sdh X 2 IB B 44 595MEHz HR Mi 455KHz 455KHz Sol eA SSK Hz 09 Pg CF201 RARE A SE ETR 91 21 8 ES 2 3 IC 2 22 IC403 1 2 Jg Be D SR J 12403 2 2 a ELS PL 12405 1 0 M X H B CQ 4065 ICAOS 2 2 Dn Rd T 2 jot Soit 126 HEL S dar a 2 4 8102 2 2 HHN it eh 1C401 22 Aer rpg m 0420 548 E 1 409 808 CPU RKTT GEM CPU HF 016 MIX BET IF HOH DET ist LOCAL OSC PLL Nee ix gen CF201 2nd OSC 1405 2 2 020 x HYHEHEHSHEHS E VOL UP DOWN Flg 2 Receiving system pun TK768 H 0 CIRCUIT DESCRIPTION FB BB b 3 Transmitter System 3 1 Microphone amplifier The signal fro
11. CompemorDCampier t C ie Ico Votagerguaor war a iL Active iter Limiter i 403 NJM4SSSE te m Are 405 406 Asa 1407 Votageregdetor RHEVLA2C _ MGBISTMBLISTGR Mixoprocessor dL TMF decode OOO 240810525 EEPROM az Drenau DCswth ns ormes Desn Onwhenpowerswich on On when power switch on 5 oana On when power switch off hen D22 tur on pos DCswih BR switch EX BV TX OV On when horn control on 2504116 68 Ripple filter RF ampie ex azo Mu ngswich 4507 model __ ______ DTCTI4EK OnwhenlGNline H DC switch when TX ae M 71 OO O 3 8209 zscmmkri l e R rr rw or 768 p
12. ON OFF 2 55 Leia sod DEPT por tre RENE KAP 1 88 Mr By DLP PETRI AUD 5 Foot witch 1 push it down for about one second Emergency mode Emergency E LCD dot light d m 3 TX 25 sec ey or Foot switch 1 push Aftar 1 min Horn Light operation D A key 1 push orn Light operation stop 1 The emergency channel is the highest channel in which the re ceive frequency is stored The channel indicator does not change but a dot lights to indicate that the transceiver has en tered the emergency mode 2 transceiver sends the preset 505 first and then transmits the situation in the car which is picked up with the microphone The transmission indicator does not light dur ing transmission 73 If tha base station acknowledges the emergency the dot lights 4 Hold the foot switch again for about one second Emergency code receive Emergency reset code receive Emergency mode reset Normal operation Dot ru IMON key Foot SW 1 push ERAS 2 d LE EISE 505 SUCHE AMO AES 8 4 PELANTA P 31 T 32 K 768 H INSTALLATION 2228
13. sa PF LA mim qam Gm dum d nj LL t L E m r A T TK 68 H REALIGNMENT 3 3 Disabling the self programing function You can make settings to prohibit self writing by the user and shifting to panel test mode and panel tuning mode with the or self programing The self programing mode is enabled as the default state If FPU is not used disable Dealer Tuning mode in the Self programing menu Canceling shift prohibit short the R492 00 and shift prohibit will cancel at power or cancel by using the TX RX unit B 2 Control Foil side view 1 L 1 4 Panel Test Mode When the test mode is entered all LCD segments LCD segments appear light the beeper sounds for one second and VERSION SELECT mode is entered A E CALL SCN AUX ADD Use the following keys to select a version D 7 DIA UP SCN key DOWN LJ Table 3 lists the versions The version is selected when the CHANNEL DOWN key is pressed Table 3 SS SS ee TK 68 H REALIGNMENT 4 1 TEST MODE CHANNEL operation When the CHANNEL DOWN key is pressed in the VERSION SELECT mode the version is selacted and a channel operation begins The channel frequencies for each version are listed in Table 5 and key function
14. E 1 P p i N IM78L LA44 2541757 2581565 2408 10512 5 25 1641 NJM2904M 4558 2581132 25 2954 2503357 75501 DTA114TK 25 2059 DTAII4EU 2541362 114 25 4081 144 2504116 DTAI44EU 25C4215 DTC114EK DTC114EU DTC144EK DTC363EK DTD114EK M67741H 32 M67741L 32 M67781H 32 M67781L 32 Component side Foil side Pattern 1 Pattern 2 Pattern 3 ili 171 1241 R ikku Tuer x NIA 41 2 ji IE Lu U illaq i 1 it a 7 5 175 ECT HERE Pattern 1 22222222 Heer Pattern 2 1 403 ican 0419 0407 az Patterm3 beoe Patten E 10405 ear 0401 Dam av 0409 3A Fail sida am ur oes ur oes one Connect 1 and 4 RHSVLA2C J8K50BNV 0 5 3SK241 SGM2014M JUA 2 2 12 NO BUA4013BF BUAOSABCF MC145190F M62363FP M38267M8L157GP MC33728V 0401 4
15. DESCRIPTION OF COMPONENTS BeNo SRM as 1 Taso PrT witch Onwen PT OFF off when PTT ONT At using 2309 Sc NENNEN AF 7 ited ESI p D2 BDSAsAVFK Reverse power protection 45W model only __ 188355 or MATIO Reverse current protection C C C U C t t C ocz Vonage reference Ds 195258 or Reverse curent protection De ERZMIODK220 EN _ Sugeabopin Dig Volege reference c m m Reverse power protection iia c m Onwhen TX 188955 or Onwhenpowerswhof pa mo a own _ _ 15205 DAN202F tuning BPF turing D214 DA204K detector Final protection 45W model only 26212607 Final protection 207 DC switch Onwhen microphone mute on lea a 5405 Constant current setting VCO 58 4360 10 M DM HDM 11 M2 DM2 HDM2 RefNo Usefumon Operation Condition Ta a 2 _______
16. On Smarmnkdwaremdy RIEN Ud M a M m 59 KEY TX key L TX off H TX on Common data JE O Shift register strobe L Load H Latch 82 O Horn control L Off On 63 EP 0 chip select 17 Select Not select 64 EN O D A converter chip select 1 Select Not select 55 58 523 86 LCD segment 23 8 Bt a E E 53 85 0 IMEEM L D Aa 3 Doo To O W EU TM TK 768 H SEMICONDUCTOR DATA 5 PLL System MC145190F TX RX 202 Terminal connection diagram vro 5 16 OUTPUT A 15 OUTPUT B GND 13 TEST2 1 19 12 vec fin 110 fin Block diagram DATA OUT REFin es 13 STAGE R COUNTER 16 STAGE p gt OUTPUT 1 DIVIDER 8 REFout CONFIGURABLE DOUBLE BUFFERED Bit Grabber REGISTER 15 BITS LOCK DETECTOR AND CONTROL LD PDout _ PHASEFREQUENCY vr B AND CONTROL gy Pw s OUTPUTS OPEN DRAIN OUTPUT Bit Grabbar REGISTER 24 BITS INTERNAL CONTROL 12 4 B amp STAGE COUNTER al f
17. 018 017 4 BT Rx BR PLL DATA CK CLOCK DT DATA EP ENABLE Flg 5 PLL unit block diagram I 1 1 1 CIRCUIT DESCRIPTION 2 amp BB 4 2 PLL unlock When the PLL is unlocked the lock detect signal LD of the PLL IC 202 is rectified by 0212 and con verted to a DC signal The CPU monitors this signal When the PLL is unlocked the CPU turns the key out put signal off low then turns 010 and BT off to prevent unnecessary transmission 4 2 HEM gh IC 202 ASRS LD 25 D212 ESL 0528 F H CPU KERS REXA 010 Q6 ST IE C 5 Display Section CPU 409 contains an LCD driver to drive the 7 segment 8 digit LCD directly 5 CPU 1 409 F LCD 7 8 E LCD Marre 6 Control Section The control section consists of CPU 409 and its peripheral circuits controls the TX RX unit The CPU has the following main functions 1 Switching between transmission and reception according to the PTT signal input 2 Reading channel frequency and program data from the memory circuit 3 Sending frequency data to the PLL 4 Turning the squelch on and off according to the pulse signal input from the squelch circuit 5 Controlling the audio mute circuit according to in put decode data
18. 1 gom 5 4 1 C E LN BH UE B Ret No es per one Fa ves ER sb 2 Y hat ILLAE PEA Eee als t 1 PUT l 5 o es no br 1 4 T 3 r3 5 E Foil side Connect 1 and 4 3 23 4 S 1380 ae Mes 1 1 1 1 3 4 m 1 gd n 47 5 Sie 1000F cR 1 C Eie e Las Ter Le foo a See 33 ciu CONTROL SECTION k 9 ee MD LI E a FELES E a c qa 57 4950 24 DW 557 4950 13 CEE 229 L Ust 1811218140 141
19. Installation procedure 1 Open the upper case of the transceiver 2 Insert the two cables with connectors from the KAP 1 switch unit into the connectors on the trans 3 Secure the switch unit board on the chassis with two screws with the notch 0 in the board placed at the front left side 7 1 2 1 4 1 3SKAP 13 1 WI 3P TX RX 38 W2 6 TX RX CN201 KCT 19 CNI CN2 2A 1 2 3 HEO ETT BI 4 2 Modifying the transceiver Horn Alert The signal frorn pin 62 of 409 CPU on the TX RX unit turns Q13 and Q14 on and off and drives KAP 1 relay K2 to drive the horn with a maximum of 2A The default output is HR1 The relay open output can be obtained between and HR2 by removing R1 in the 1 Default Enable Disable 4 22 Bel SES M TX RX E IC409 CPU 62 013 014 KAP 1 1528 2 HASERA 1 RI Z HRI 284 INSTALLATION 2235 TER rr ran m YR aom P po
20. Sending encode data 7 Sending data to the D A converter 8420 Fig 7 Display section 6 f ll SD 27 576118 4218 CPU 12409 EH CPU TX RX CPU 2086 1 PTT 2 2 TOS THE 3 CPLL 8 4 TRIER EHI 5 SEI Eris ime EE LR 6 xk p cde 7 W SEI DA 1 CONVERTER REGISTER 202 ree TS bp E 51 3 5 SUM 8 Control section block diagram 41 _ TK 768 H CIRCUIT DESCRIPTION PS ER 6 1 Memory circuit 201 is a 8 Kbit EEPROM that stores adjustment and backup data Shift register IC10 is an interface IC for port expansion It is used to expand the CPU 409 output ports D A converter 1 6 is used as a conventional semi fixed resistor converter It sets the following 1 RX sensitivity 2 Transmission power 3 Modulation level 4 Audio power Frequency 6 2 TX encode data The CPU 1 408 transmits encode data QT data items are output from CPU pin 16 The sig nal from this pin passes through the CR low pass filter and goes to the summing amplifier 404 in the mi crophone amplifier data is output from CPU pin 10 This signal passes through the CR low pass filter and goes to 402 in the IDC circuit o
21. 3 3 KAP 1 option emergency Horn Light drive relay output modification Modify the circuit Q1 Remove DTD114EK R3 Remove R92 0670 05 002 R5 R6 Add R92 0670 05 00 Remove Q1 R3 and R4 and add R5 and R6 Install it in the transceiver Send the output with the KCT 19 and KCT 18 KAP 1 SWITCH UNIT X41 3380 20 3 3 1213 01 DTDII4EK R3 R4 R92 0670 05 0 R5 R6 R92 0670 05 0 EE Q1 R3 A RA R5 WAR AM KCT 19 KCT 18 01 01 2 155193 2 uc Emergency moda is operating DE HorwLight 1 n 19 KCT 18 TK erae CN3 1 PAOLO A HorniLight 15 19 18 270 k 1 foil side view 33 k TK768 H INSTALLATION 2226 4 Horn Light Unit KAP 1 Option 4 1 Installing the KAP 1 in the transceiver The Horn Alert max 2A drive and Light functions are enabled by inserting the KAP 1 W1 white black red into on the TX RX unit inserting W2 green into 201 on the unit and connect ing the 19 option to and CN2 of the 1
22. Max deviation High 0 255 an 0 255 Three point adustment 6L Sensitivity Low 0 255 DEV CENTER Sensitivity Center 0 255 nap Sensitivity High 0 255 PT E s Table 7 6 SENSITIVITY 6L SENSITIVITY LOW 6C SENSITIVITY CENTER 6H SENSITIVITY HIGH 7 SQUELCH Data save next item CH DOWN key Next item previous item MON key Table 8 a ee a ee ee ee ee ee Ha TK 68 H REALIGNMENT 6 Transceiver Programming 6 1 Introduction The TK 768 H transceiver is programmed using an IBM PC or compatible machine a programming inter face KPG 4 and a programming disk KPG 29D Fig ure 1 shows the setup for an IBM PC Programming disk 290 Programming interface 4 6 2 KPG 4 Description Optional PC programming interface cable The KPG 4 is reeded to connect the 768 to the computer It has a circuit the D subconnector 25 pin case that converts the RS 232C logic level to TTL level The KPG 4 plug is connected to external socket of the TK 768 H and to the computer by a conversion cable option with 9 female connector and a 25 pin male connector 6 3 Programming Software Description KPG 29D is the programming software for the TK 768 H supplied on a 3 5 or 5 25 floppy disk This so
23. 3 Display See below for more details 4 CHANNEL A Y buttons Press to select the next higher channel or W 10 select the next lower channel You can choose from a maximum of 32 channels programmed by the dealer To quickly step upward downward through the channels hald down A or Y respec tively 8 Microphone connector Insert the 6 modular connector plug of the microphone until the locking tab clicks amp Function buttons The functions of these buttons are dependent on dealer pro gramming D mir x POWER Tc utut ar EL Eam d HOLT Y VOLUME Meh A se Ete ce X Tr mm TF HHA 3 A V amp CHANNEL i amp A t RAFTS Spb Em ES RM B 32 A t GE St sr LLB R I GRE FEE 8 A ESTAS 6 Ark D Tfi a fe I Display Visible while transmitting Visible when signals are present on the currently selected chan nal Appears when the Monitor function is activated 4 CALL Blinks when the correct DTMF code for Code Squalch or Selctive Call is received Also appears when transmitting while using Code Squelch or Selective Call 5 SCN Appears when the Scan function is activated AUX Appears when the auxiliary function programmed by the dealer
24. D KPG 29D 6 5 SHAA 2 LAM RT ELE GLE CES 2 35 64 f DLP l HER 2 Ron C fu A S f 89 MON HEEL m PC 2555 5 SUV LEG P si 0 End FH BREL 14 08 EG PIE 4 5 iik Rot Fig 2 25 26 768 REALIGNMENT 25 28 amp INSTALLATION 7 Memory Reset This function initializes the data in the EEPROM of tha transceiver 7 1 Operation 1 Hold down the key and turn the power on and keep the key pressed for two seconds to enter the initial mode The display changes form PrOG to Press the VOL and D A keys at the same time to reset the memory The display does not change The model name F version and tuning data is not initialized INSTALLATION 1 Accessory Connection Cable KCT 19 Option The 19 is an accessory connection cable for connecting external equipment The connector ha
25. L Enable output for shift register Foot switch signal input for emergency mode 17 Emergency mode entry Horn control signal output Horn Horn off L Enable output for PLL Enable output for 0 4 converter Externa PTT signal input Earth Power output after power switch Earth Modulation signal input Power switch control signal input Power switch on Detection signal output signal output External modulation signal output Mot connection Audio signal input Common BV output earth Internal MIC signal input External MIC signal output External HOOK signal output 7 13 8V 1596 1 84 On hook 1 Off haok H Earth Power output after power switch PTT signal input GND TX Open 13 8V 1594 Serial data input output MIC earth MIC signal input Standard modulation at 6000 Hook signal input hook L Off hook H serial data input output VCO Sub unit VCO switch signal output VCO signal output Earth input Modulation signal input PLL lock voltage output KEY signal input TX Clock input for registenD A converter Data input for PLL shift register D A converter smeter voltage output Not use
26. wp se 33 Deos S eoe ye Lum m 520 30 ves eax 15 ves 406 125 woran sex we es i100 10 wo 15 ves 1906 YES YES 41 INT TRI exp amp Mr adi 01 DzcziB x v DSASAT FE 08 8 22212 155355 110 14 D ERZ M100K220 09 12 208 207 214 013 FN 014 D17 204 1 DANZ35K D20 1 PHB Fe D24 0205 DANGUZK 0208 210 15v280 211 213 154214 0215 O2CZ12 x Y MORES BRI 5 ICB 13 11 4477 Wis 1 TAPSSOUF 201 TATSLOOF or NJM7ELDOLA 142 143 82158242 ar 1 52 12 02 014 6214 0215 Da D ns J 25950 71 ves aserses er ea wo wo wo ws Lie Lye Tus 57 4850 24 s 2157 22 3 123 11 2 Q Qa 013 24 014 212 015 22 210 015 209 220 212 225 4205 920
27. BE Y 149 88 i i SW PRE 1 5 05 DRY 18292 1 DC ETE CF 1213 14117 161242723 N JMZ BOAM NJMZSOAM 18517175 10 LS E pET 4 7101 a55KMa cr Ic n _ aen 15768 EEEL lat 42 RF lt MSP E BPF lt AMP C i Bg Sb r ak A 1 l a 5 48 gt V z asa1132 0 0408 8411 LITI 22 2581 5656 Jue momen EN MAN aaoo eee eee M38287MBL 1577 MICRO C FROCESSOR i ATZ4COSK10512 5 1 5 38s 1408 164034 ur 403 HljMASBSE NJIHAET TIER SS T m I 1 gt E 5 D LEVEL DIAGRAM E TF
28. EJ 45 05MHz 130 455KHz H3 B PLL 89585 616 218 45 050MHz CIF 45 44 595MEz H SB 455KHz SI A Ir s S EH PERR 15 28 E MEO E i 8 SR i 455kHz 12 44 595 PL MIC Fig 1 Frequency configuration 2 Receiving System 2 1 RF unit An incoming RF signal from the antenna terminal passes through the antenna switch D20 and D24 are off and the bandpass filter L208 The signal is fied by RF amplifier Q208 and passes through the bandpass filter L205 206 207 again The resulting signal goes to the first mixer 0207 where it is mixed with the first local oscillator signal output from the fre quency synthesizer to produce the first IF 45 050MHz 2 2 1 HAT pM es J X HORT AA 08 D 20410 24881 1208 JE 0208 KA BL SEA GB L 205 206 207 Q 207 AIRES SM E 45050 2 18 37 768 CIRCUIT DESCRIPTION BB 2 2 IF unit The first IF signal then passes through a four pole monolithic crystal filter XF1 The signal is amplified by first IF amplifier Q16 and goes to the second IF unit second IF unit consists of an IF system IC and the se
29. Fig 9 Horn control circuit 6 6 Power supply circuit D4 protects IC1 against overvoltage Each time a pulse comes from the PSW terminal the IC1 output is reversed The reversed output signal passes through Q1 and and drives Q4 voltage must be applied to the IGN terminal If 24V is supplied to the transceiver by mistake 2 turns on and 13 and Q4 are forced off so the trans ceiver does not turn on 6 6 BRB PSW T BRAK SEI Er ICI He 11 019103 5104 48 38 FB Fk aS HE EES a T HET 24V m Q2 BS 03 04 UL EER Fig 10 Power supply circuit me Je Timi k H 768 SEMICONDUCTOR DATA Microprocessor M38267M8L157GP TX RX Unit 409 Terminal connection diagram E on o PertsP SLhSHBzsf sn5tU5S25sz t O U 0 UD CO T C C uu Q Z 9 S 512 511 510 KM20 58 SELF SB 57 MON 56 55 SCN VLDN VLUP 52 51 50 vss VREF XI XCO RST SMO COMO VL3 TEST VL1 EDT eror z gz PERODS az 5 55 Xi te 5 Terminal function Mm Ex m Normal microphone FTT L On
30. SSS os sans CCS O O5 2SKSOSNVIKS2I OscilatorforTX UICE V EST 0 01 4 P Variablediode Frequency control 000 control 52 Teen a F LL LL E a i E TK 768 H CAPACITORS CC 45 IH 1 DAE 1 ceramic electrolytic etc Shape round square ect Temp coefficient Temperature coefficient PARTS LIST ED fF 1H 4 220 J 5 8 4 z Voltage rating Value Tolerance D lo Viol po Jl Voltage rating 2nd word 1 1st word 1 12 10 80 100 More than 10 50 10 75 Lass than Chip capacitors Refer to the table above except dimension EX 73 E SL 00 pue e d Chip CH RH UJ SL 73 1 2 3 5 Chip B RESISTORS Chip resistor Carbon 73 E B 2B 000 J 1 H J Carbon resistor Normal type 14 B B 2 000 J 1 2 34 5 B 7 1 Type ceramic electrolytic etc 2 Shape round square ect 3 Dimension 4 z Temp coefficient 5 Voltage rating 6 Value 7 Tolerance Capacitor value 010 1pF 2 100 M
31. uu T m I L z Jl em E IL if d i AX Foil side elle 5 TX RX UNIT 57 4950 A2 Foil side view 21 22 M2 DM2 23 HDM 24 HDM2 E 3 am I S Vu 768 Pc BOARD VIEW Ep RIE 8845 Es TX RX UNIT X57 4950 XX A 2 Component side view Foil side 21 M DM 22 M2 DM2 23 HDM 24 2 e 9 ju pep em YES NO NO NO NO NO Exon wi we ws ws Dt Sow no ves ves ves ves No NO NO 24iHpwz ves ves ves ves ves ves ves m sz zz ss sz ss VES Fw NM Mas 5 L 11121 T a Bi I 4 i L 1 1 1 8 2 LN 1 r i 4 i Fr W x 1 p 2 5 1 1 4 EF 1 a ra d r i a 1 ad 5 1 1 I 4 amp Des 4 E
32. 2 DTMF signaling ON 20 SCN ON OFF select 2 ID AJ ON OFF select 3 PTT ID ON NN __ _3_ ____ SCN ON OFF select S OFF DAJ ON OFF select 4 select 0 l OIDA OFFA select 5 ID 000 9999999999 key ID input _5 99999 Note Do not set the transmission frequency and receiving frequency by different steps If the frequency is set by steps of 5 2 set the transmission frequency by steps of 5kHz too Similarly if the former is set by steps of 6 25kHz set the latter by steps of 6 25kHz too 4 Busy CH lockout _ RITU am m r ss im mom dr TK 68 H REALIGNMENT 3 2 Setting the functions The dealer can set the functions common to all the channels of the transceiver without using the FPU Operation 1 Hold down the A key and turn the power on and keep the A key pressed for two seconds to enter the initial mode The display changes from PrOG to SEL 2 When the key is pressed again the function set mode is entered The display shows 150 1 or 150 2 Setting item Table 2 Function Function Mama Setting No Defaults are uncerlined oa AUX L DE LADD Selectable ol B OFF E gt
33. KEY RUBEER 32 0545 05 SCREW CABINET DET3GB1HT03K HIP D OTOUF SCREW SCREW PCB ANT 0044 05 SCREW SHIELD 73681 4716 CHIP 470PF CHIP ELE 47UF MICROPHONE ACSY 10UF MICROPHONE DTMF ACSY 001008 MICROPHONE DTMF ACSY CHIP TAN 47UF SPEAKER IC POWER MODUAL IC POWER MODUAL CKT3BBTHTOGE CCT3GCHTHTBOJ CHIP TK 768 H PARTS LIST L Tm CKT3GBTHTO3K CKT3GBTHTCZK CCT3GCHTHDSUD 1052 CKT3GBTHIDGK 1 0 73081 471 CKT3G51H103K CEOWEW1A4TIM CX T3FBTETIME CR 3G81H CK73G81H102K CR73681H IER CK73GBTH471K C82 0040 05 CK73GBT1HTIZK CK73FBIES73K H 12 CC736CH101J CKT3GBTHATIK CETSGBTHTDZK CKTSFBTETDAK CETSGBTHTDZK DET3GBAHTOSK CEZ3EBTHTQ3K 0557 06 93455146 092 04 06 33 0584 05 C93 0583 05 CK73GB1H CK73GB1H471K CKT3FBHETOAK CKTSGBTHTDZE CCT3GCHTH180J CCT3GCHTHT8OJ CK73GB81H102K CK73GB1H471K 1 1 1 CCT3GCHTHO2DC 736 CC73GCHTH120J CET3GCHTHTRSC
34. 0 TETERE 0 Alf 4 Wort S HB e 5 2 19 E 8 TX RX KCT 19 08 KCT 27 TK 68 H 28 um m INSTALLATION 1 2 Terminal function ____ C D EI Function 1 04 We hook signal input On hook L Off hook MIC GND ignition input for KCT 18 Detaction signal output Output impedance 1 or less Output level 4 amp 0mVrms Standard modulation Output frequency response 0 3kHz flat DA M External MIC signal input Internal MIC signal output Standard modulation at 6000 GND 58 DC power supply after power switch on DC 13 6 1596 11 8 15 6 1 07 External PTT signal input PTT on L PTT off OPEN A 8 D 4 Data modulation signal input Input i impedance or mora Deviation 3kHz or more 4 5 input Max dev 4 1kHz Frequency response 1 3dB TkHz at DC 3 6kHz A 10 EL Horn alert control signal output Signal output for horn relay drive lopen collector level during hom drive max sink current 100mA 1 Instllgted 1 HR2 MIC mute
35. 3 2 Transceiver modification procedure 3 2 Install the foot switch Install the foot switch through the 19 and KCT KCT 19 KCT 18 18 HETER When the switch is treaded on the radio enters the emergency mode TX RX B 2 Change the power switch circuit R517 dz Bk R92 1252 05 TX RX unit B 2 Control section R401 R92 1252 05 R517 Remove R92 1252 05 00 BER W1 R401 Add R92 1252 05 00 T Jumper wire W1 Add TX RX A 2 R14 73 2 1027 1 0k TX RX unit A 2 RF section EPEN Hers R14 Remove RK73FB2A102J 1 0 Cie RT TA h SE Ja Once the transceiver is modified it cannot be iko HRA A Ra RITA MAA turned on and off with the power switch The power switch turns the LCD backlight and display on and off The power is switched on and off by IGNITION SENSE Q405 A LCD backlight Remove 44 VD ied i 2 E L pasaspa maaa f k M I Font KCT 18 Outside switch Fig 6 Spt bets vita 768 INSTALLATION lt lt 25
36. CC73GCH1H1RSC CC73GCHIHATSC CK73G8BTH TUZK CET3GCHTIHT000 CC73GCH1H120J CC73GCHT1H120J CCT3GCHTHT103K CK73GBTHTD2K CCT3FCHTHOOC 2 CXTSGBIHIDK CETIFICATE CK73GB THTUZK CK73GBTH UK C32 0515 05 CKT3GBTHTDZK 92 0001 05 CRTSFBTE2Z3K UC T3GCHTHDZ0C C82 D628 05 CC73GCHTHTBUJ CCT3GCHTHTROJ CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C TK 788 M M2 DM DM2 TK 768H DM DM2 CK73GBTHTDZK 92 0507 05 CC736CH1H220J DC236CHTHT101 J CK73GBTH102K CCT36CHTHDSOC CC73GCH1HOZ0C CCT3GCH1H020C CK73GB1H471K CKT3GBTCTOAK CKT3GBTETZ3K CKT3GBIC TIME CCT3GCHTHTUTJ 73081 471 32 1507 05 CCT3GCHTHTOT 32 0507 05 CK73BB1H227X CK73GB1E223K CK73GB1C273K CLT3GCHTHA 70 CET3GBTHAT1K CKT3GB1H472K CKT3GB1H471K 32 0507 05 LET3GBIEMTTK CK73681C104K CKT368 1H 02k 1 1062 CK73681E223K COZ3G HTH T0900 CKT3GBTHATTK CK73GBTHBBZK 92 0507 05 92 0004 05 CK736B1HEBZK CK73GBTE03K CXT3GBTET03K CCTFCHTH S1J CK73681H122K CET3BBTHATTK CCT3GCHTHT
37. is activated 7 ADD Appears when the currently selected channel is included in the scan list 88888888 Displays a channel numbers ID codes and other information HT e gd 4 Brix 588 uj T Sar Th CALL Tri E T SAVER NE st EL TF TJ fl 79 Bum amp SCN AUX Dh zh 7 ADD B E318 ir HR 968888888 SERAT ERA E XL 1 2 LN TK 768 H_ 7 ADJUSTMENT if f Tunine item Frequency H RF power Center RF power High Signaling balance Max deviation 0 255 AC Max deviation Center Sensitivity Center Table 1 Panel tuning state transition 1 FREQUENCY Three point adjustment 2C RF POWER CENTER 3 SIGNALING BALANCE 2H RF POWER HIGH 2 RF POWER 4 MAXDEV 4L MAX DEV LOW ILI MAX DEV HIGH 8 SENSITIVITY SENSITIVITY LOW 6 SENSITIVITY CENTER 6H SENSITIVITY HIGH 7 SQUELCH __ Data save next item _ CH DOWN key item previous item 777 MON key Table 2 tem No Ee 255_ Three point adjustment 0 256 Tuning description Vald range iation Cel puppe
38. 0 OHM 1 0 D OHM RK73GB1J102J RK73GB1J531 J RET3FBZAT54J 932 255 065 RET3FB23472 J 73 2 472 RKT3GB1J271J RET3GET ITBOU HK736BTJZ71 192 1752 05 RET3GBTIT0AJ RK73F82A222 I RK73F82A YILI RK73FB2ATDQLI RK736B14581 I RAGE RK73GBTJ473J FIKT38B1 333 768 M M2 DM DM2 7 2 RKT3GB1J101J RKT3GB1 104 RKT3G81J103 RET3681J680J RKT3GB 1583 Rx 73681683 RK73GB1J184J 8 73881 108 2 1252 05 RK736B1J104J 92 1281 05 32 1252 05 RK73GB1J102J AR TSR 73 AK7AGBIJISZJ 736 1014 RKT36B1J122 RK73GB1J101J RKT3681J103J RKT3GBTJ223 RK73GB 1 130 RKT3GB1J104J RK736G81J124J RK73GB1J154 AS 1752 05 RK73GB1J150 RK73GB1J150J RKT3GB1J101J RKT3GB1 1392 RKT3GB1J583J RK72GB10583 RK73G81J391J RK 3GB1J103J RK73GB1J6B1J RKT3GBTJ103J FIK73GB1J473 RK73GB1JBB4 J RKT36B1J152J RKT3581 124 7 1 SAL 852 1252 D5 RK73GB1J183 231 92 1252 05 RKT3GB1J153J RKT3681J223J RKT3GB1J274 RKT3681J333J RKT3681J224J TK 768 M M2 DM DM2 TK 768H DM DM2 CHIP R CHIP A CHIP A SS ee mno 1 Sab Tt bi L A TTL m IE RIKI3GBTJ184J RKT3GBT RK73GBTJ223J RKT3GBI 184 RK73GB1J273 RKT36B1J582J RKT3GE1J103J 73681 581 RKT3GBTJ824 RK73GB1J224J 1 7153 RKT
39. 02 SURGE ABSORPTION Bm RES 527 AT gt 0411 D410 124409 0408 0407 0400 DET OUTISM Cane 0 017 1 2012 G ____ u MX II aM Rash 10K 19 k B I 1K B 6 B H ES MS826TMBLISTGP E HK T T jajajajaja smara nant 10409 u3828TMBLISTOP MICRO PROCESSOR CIRCUIT DIAGRAM E 768 Ne xe ecce ee OM NERO 423 405 406 412 NJM SSBE TX RX SECTION 57 4050 A 2 r r 1420 MSBP RSLS Pep 12410 U AT2AORM 10502 5 09401 25640818 0403 5408 DTAT114TE Cung 1 420 ux 12418 1 L s iios E Fade D403 D406 411 B30 2140
40. 05 cu Powe 2415 4 h zm RB 4 14 93 E coo H m A MH uU mq oom TK 68 H TX RX UNIT TX RX SECTION X57 4850 X X A 2 TX RX UNIT CONTROL SECTION 57 4950 1 B 2 Bua 307 em IFA HJMTBLOSUA ac 218 RAL csi 1804 TATBOBS HJHTHL SEA DOR us aru OTe ag 4 25A13562 T3 bns rei mila qaqa BCT sr ve Cid i cm ERELT Pc I 1 2 3 1 BAM RET EUST 12413 C Ma S A n 1323 HPF C L IPL a L AC DECODE 104023 2 2 5 1040511 21 68 JIAGRAM amp 4 Ei UNIT v Er ee 2503387 3822954 peso Tom
41. 3681H103K CCT3GCHTHZ20J 73 1 2701 B CCT3GCHTHSSDU 20 CCT3GCHIHDEDD CCT36CHIHIRBC C20 CC73GCHIHTRSC CK73G81H103K Cz CK73GBTH102K 23 CHIPC C24 T b C25 CHIPC 1582 C27 CET3GBTHTO2K CHIP C 1000 K E40 5815 05 PIN CONNECTOR FOR INSIDE SHIELDING CASE 12 CHOKE COIL 10UH 13 4 8 CHOKE COR 10UH 14 18 COIL 18 COIL 110 SMALL FIXED INDUCTOR 1006 10 SMALL FIXED INDUCTOR 110 SMALL FIXED INDUCTOR EBNH RK73GB1J101J CHPR R2 RK736B1J4 01 CHIP A 47 J R2 RK736B1 470J 47 J RK736B1J281J CHIPA 30 J b R3 RK736B1J181J CHIPA 180 1 m RKTSGBIJIBI 180 m RK73G81 221 20 J CHPR J A5 882 1252 05 00HM RK73GB1J101J 100 J RK73GB1J183J J RK736B1 181J 180 J R RK73GB1 470J 47 J R3 RK73GB1J470J CHIPA 47 J RK73GB1 281J CHIPA J RID 8K73681J151J J AID RK73GB1J181J 180 J RK73GB1 181 J 10 J 811 RK736B1 473J J 12 RK736B1 103J J R13 RX73681J101J R14 RK73681J390J CHIP R ag 106W RIS RS2 0670 05 ma 15V268 VARIABL
42. 3GBT 273 RK73GB1J822J HK736B1J553 J RK73GB1J104J 774 3681 424 R amp 73381100 730814627 RK73681J873J RK73GB1 382 1 8K73GB1 103J RKT3GB1JBESJ RK73GB1J183J RK73GB1 J584J RK73GB1J183J RKT3681J103J RKT3GBT 223 RK73GB1 473J RK73681J103 82 1252 08 RK73681J102J R32 1252 05 RE 73691J102J RKT3GBTSSITJ RK73GBI 473J 97 1252 05 RK73GB1 1105 RK73BGB1 102 J TK 768 H TX RX UNIT 57 4950 TK 68 H TX RX UNIT X57 4950 X X VCO X58 4360 X X tm RK73GBTJ472 RK73GB1JEB4 RK73GB1JZ2 amp J 7 1473 PARTS LIST 4 1 LL73881M 2408 10517 5 114 SERIAL EEPROM 02 AMP X2 DIGITAL TRANSISTOR DIGITAL TRANSISTOR 254164115 TRANSISTOR DTATMYK DIGITAL TRANSISTOR 258113200 8 DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR 5 TRANSISTOR DIGITAL TRANSESTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR TRANSISTOR FET FET TRANSISTOR TRANSISTOR 4 DIGITAL TRANSISTOR VARIABLE DIODE DTD114 K DIGITAL TRANSISTOR VARIABLE DIOE 2504061 1 TRANSISTOR DIGITAL TRANSISTOR 25B113210 R TRANSISTOR DTA114TK DIGITAL TRANSISTOR 01 144 DIGITAL TRANSISTOR DITC1445K DIGITAL TRANSISTOR DIGITAL TRAN
43. 5 207 0208 215812158 199 200 2203 204 2225 6228 2230 casa 10254 385 268 we 122 10 19P 0 5 HE E pepe Cm pum ws se se asse ose 22 18 e 22 Em IE ves ves DREZENN ves wo ves ves Sr eer BTATT4EU DTE tTAEU 25 184115 25B1132 Q R 25A1362 Y DTC114EK 11011 14 29042 1507 DfATAAEU 2503357 2522054 Sur Note is parts of pattern 1 L ure A cu i ME 44 lw i E a T eee ee u TX RX UNIT X57 4950 XX B 2 Component side view 21 M DM 22 2 0 2 23 HDM 24 HDM2 UNIT X57 4950 XX B 2 Foil side view 21 22 M2 DM2 23 24 2 TENDUNT lt ASNE Zum ra 4 co a Component side view Foil side gi HDM 23 22 2 0 2 M DM UNIT 57 4950 2 21 TX AI m 5 Leem H k T 1 um 1 1 Em f Am Nu
44. E CAPACITANCE MUDE TRANSISTOR 2SKBDENVIKS2 FET 768 M M2 DM DM2 TK 768H DM DM2 61 Taqa Fiera ILE TET r 768 EXPLODED VIEW 4 573 LOL 701 201 EOL _ 09 Dr B BZ LB8N 00 9 Br DODZ EEN 48148 8 X 9 ZIN 8 X EIN 20 9 X Parts with the exploded numbers larger than 700 are not supplied Ei da aL ll LE ZI TK 768 H 0 PACKING 8135 35 Polystyrene foamed board 11 0883 04 12 Instruction manual 882 0588 00 38 Bag 25 0720 04 5 Cap Jack 809 0235 05 15 DC cord 0 2076 1 22 F51 0016 05 10 M M2 DM DM 2 1 0017 05 15A HDM HDM2 37 Bag 36 Carton board 25 0103 04 13 0975 14 47 Screw sat 43 Bracket 99 0395 05 J28 0627 03 2 42 Holder J19 1584 05 MIC Microphone T91 0552 05 M M2 1191 0553 05 DM DM2 HDM HDM 2 34 Polystyrene foamed fixture H10 2789 02 3 sticker Hyatt 39 Item carton case 52 0756 02 10 UPC code label 844 2163 04 Parts with the exploded numbers larger than 700 are not supplied 63 TK 68 H ADJUSTMENT Test Equipment Required for Alignment Test Equipment 5 Major Specifications 1 Standard Signal Generator Frequency
45. LA ulgpLzL p I HINSO Gt M A3uanbaj 2 5 XH ea zr ET 0 8 m mah KAP 1 HORN LIGHT UNIT KT 3 8 70 External View 7 CK73FB1H102K CHIP LEAD WIRE WITH CONNECTOR 551 1420 05 155193 DTD114EK 1000 O 010UF K 1000FF CHIP C LEAD WIRE WITH CONNECTOR PIN ASSY 2P PIN ASSY 2P PIN ASSY 0 OHM 0 OHM CHIP R CHIP R RELAY DIODE DIGITAL TRANSISTOR Overview This unit is designed as an option that is built into the 768 land mobile transceivers It has a horn alert switching relay Features Horn alert function An external equipment can be controlled by turning the function on and off and using signaling decode output Bu TK 768 H TIGRE fi o ANRE LIRE SERT ERE 97 TK 68 H KAP 1 HORN LIGHT 3E amp 7c 6 Circuit Diagram 6 1 SWITCH UNIT 41 3380 20 w 1 Q1 114 D1 2 155193 B s PC Board View SW u
46. Lock detect output for PLL Lock Unlock L Enable input for shift register Foot switch signal output for amergency moda L Emergency mode entry Horn control signal input Horn on Horn off L Enable input for PLL Enable input for D A converter External PTT signal output Earth DO D 74 PC BOARD VIEWS ED RIERA 768 VCO 58 4360 Component side view 10 M DM HDM 11 M2 DM2 HDM2 58 4360 Foil side view 10 0 11 M2 DM2 HDM2 _ Component side Foil side 76 Ili Bd A 5 4 TK 768 H prc Boarn VIEW TX RX UNIT X57 4950 XX A 2 Component side view 21 22 M2 DM2 23 HDM 24 2 F Faso a IIR d 2 a E Foil side LOCI ES See Sees F i LETS d 1 1 1 Tur jm n d i b imt ss BI TS j umm 1 3 E L 11 E a 1 m F i 17 FII i f m Es 4 I AJ E
47. OIL ET 161 48 57 SMALL FIXED INDUCTOR 8 SMALL FIXED INDUCTOR 82 SMALL AXED INDUCTOR 0 39 fH SMALL AXED INDUCTOR 0 33UH COIL 18 SMALL FIXED INDUCTOR D 068UH SMALL FIXED INDUCTOR 39H SMALL AXED INDUCTOR 0 VEXO 12 BMHZ 57 TK 768 H TX RX UNIT 67 4950 5 88652 54888 8888 B92 1252 05 RK73GB1J103J 2 0071 18 PET 97 1252 05 RK73GBT JZ24 RKT3GBT I102 2 1252 05 BE T3FBZATU2J HKT3GBI1J T0 RKT3GB1J104 RKT3GET1J123J FK73GBT1 472J HK73GBTJ 153 FKT3GBT1 473J R32 1215 05 RET3G81J104 RK73GB1 104 RKT3G6B1 1124 1 RKT3GB1J102J RET3GBT1J184 nK73G81 1104 RKZ3GB1 1104 73681 103 RK73GB1J182 1 RKT3GB1J152J RETSGBTJZ24J RK73GB1 M72J FIKT3GB1Jz20J FIKT36B1 473 2036813104 RK73681 472 FIK73GB1J104J RK736B1J104J RKT36B1 3334 RE 73881 RK736B1 J274J RK736B1 J322 J 2 1252 05 7 1 1722 1 1 024 1 1471 RET3GB1J152 RK 3GB1JBBAJ HET3GB1J223J RETSGBTJT01 2081 681 7 1 103 RK73G81J101 1 PARTS LIST CRYSTAL RESONATOR 44 CRYSTAL RESONATOR 17 388987 CHIP R CHIP R CHIP A CHIP R CHIP R CHIP CHIP R 45 050 1 0 0 OHM 106 D OHM TOHM 1
48. Range 100 to 200 2 SSG Modulation Frequency modulation and external modulation s Output 127dBm 0 1pV to greater than 7dBm 100mV 2 Power Meter Input Impedance 500 Operation Frequency 100 to 200MHz or more 1 Measurement Capability Vicinity of 60W y R 100 to 200 4 Digital Volt Meter Measuring Range 1 to 15v DC 00 Accuracy High input impedance for minimum circuit loading 5 Oscilloscope DC through 30MHz 6 High Sensitivity Frequency Range 10Hz to 200MHz Frequency Counter Frequency Stability 0 2ppm or lass 7 Ammeter B AF Volt Meter Frequency Range 50Hz to 10kHz VTVM Voltage Range 3mV to Frequency Range 50Hz to 5 2 or more Output Oto 1V Capability S eorlessatlkHz Input Level to 10Vrms 11 Voltmeter Measuring Range 1 5 to 30V DC or lass Input Impedance or greater 12 42 Dummy Load Approx 40 13 Regulated Power Supply 13 6 approx 15A adjustable from 9 to 179 Useful if ammeter requipped __ PTTG 3 4 MICG MIC 6 HOOK MIC connector Front view lt _ _ Xu T BET TK 68 H ADJUSTMENT 3 Adjustment Location Front panel 1 POWER switch Press to turn the power OFF 2 VOLUME Y buttons Press A to increase the volume or F to decrease the volume To quickly step the volume up down hold down or YV respectively
49. SISTOR V OTC 144ER DIGITAL TRANSISTOA X58 4350 1D SUB UNIT 58 4350 11 SUB UNIT 900 IC D TYPE FLIP RLOPXZ X58 4360 11 SUB UNIT VEO IC IDP IC VOLTAGE REGULATOR 45V IC VOLTAGE REGULATORS VCO X58 4360 XX Cra Hem 10 M IDM HDM 11 M2 DM2 HDM2 IC OP X2 0 IC E STAGE SHIFT STORE REGISTE CC23G8CH1HB2 IC POWER 5 162 5 CCT3GCHTHOTOD CCT3BGCHTHO7OD IC OP x7 C5 EET3GDH1H060D DETSGBIHTQZK H0600 730 1 40 l 3 CCT3GCHTHOAOC i HOM 1 600 CCT3GCHTHOBOD 60 TK 768 2 2 TK 76BH DM DM2 p _ Dco uo P a am m M n nLZ YY m 777187 Ds TESTE E x i 4 768 0 PARTS LIST 201 5 3 58 4360 0 YW Description 1213 ___ 1000PF F TRANSISTOR cu DIGITAL TRANSISTOR CCTSGCHIHOINC FET 15 18 K72GB1H102K 17 CK7
50. STJ CKT3GB THX3ZK C92 0004 05 82453845 X73G81E103K CHIP CHIP CHIP T AN CHIP CHIP C CHIP CHIP TAN CHIP TAN CHIP C CHIP C 100PF 4 BBOCPF 1 0UF 47PF 01017 7S0PF TAXXIPF D D10UF JPF T UF 30UF 0 OTOUF CKT3GB1HTDZK CKTSGBIHST IK CKTSGBIC dak COMSG0H THEE CKTSGB1HTOGR 72 0372 05 140 1092 34 40 1008 34 142 1081 37 134 4481 05 134 4481 05 1534 4478 134 4481 05 134 8478 05 140 5871 34 L4 8271 34 40 33 37 L amp 0 3381 37 134 4472 05 L34 4473 05 134 4472 05 140 5872 37 154 2371 38 140 1081 37 77 1576 05 TK 768 H UNIT 57 4950 TODPF 100 1 01 CHIP C INTER CONNECTOR LCD PIN CONNECTOR F R INSIDE BP PIN CONNECTOR F R INSIDE 3P PIN CONNECTOR INSIDE PIN CONNECTOR F R INSIDE 2 FLAT CABLE 262 PIN CONNECTOR FOR INSIDE FLAT CABLE CONNECTOR 28 PHONE JACK 3 50 FUSE 1 84 HARDWARE FIXTURE SPACER DISCLI 455 2 CERAMIC FILTER 455 2 SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR 10H SMALL FIXED INDUCTOR 0 1UH COL ST COIL 2 3T COIL C
51. TUZK LEOMEWTEAZTM CK 3GBIHATTK INSTRUCTION MANUAL ACSY MODEL NAME PLATE MODEL NAME PLATE NAME PLATE MODEL NAME PLATE CKT3GBTHTOZK 82 0512 05 CET3GBTHATTK 73081 103 DG CORO ACSY ANTENNA CABLE 30 2172 18 237 0451 05 E37 0587 05 LEAD WIRE WITH CONECTOR SP FLAT CABLE 73681 71 CKT3FBTETDAK F10 2224 04 F10 2202 04 F51 0015 05 51 0018 05 F51 0017 05 COVER APC DING PLATE 10 DC CORD ACSY FUSE 104 DC CORD ACSY FUSE 16 ACEY CK73GB1 KIOSK CKT3GBTHIDZK CKT3FBTETORK 202 0791 04 10477814 FLAT SPRING AUXILIARY PART 27 10 0790 04 AUXILIARY PART PANEL 28 810417814 AUXILIARY PART CHASSIS 24 510 0786 04 AUXILIARY PART ISP 30 813 1458 4 FORMED PLATE DC 132 PACKING LACKI 34 POLYSTYRENE FOAMED FIXTURE 35 POLYSTYRENE F AMED BOARD 573681 102 CARTON BOARD 82458425 37 BAG DC CORD CE738CHTH150J 38 BAG 8001 CET38CH1HZ20U ITEM CARTUN CASE XKT3G81H103K HOLDER SP HOLDER ACSY BRACKET ACSY 1 CHIP C CK736B1H107X CKT3GBIH
52. ange the direction of bending the flat cable 69 3 Turn the panel over insert the flat cable into the main unit Attach the panel to the main unit and reinstall the cases 168 EU PER AE s 1 PL ES 2 p 3F 125 H 3 Et EUER TKJ68 H CIRCUIT DESCRIPTION RB 1 Circuit Configuration by Frequency The receiver is a double conversion superhet with first intermediate frequency IF of 45 050MHz and a second IF of 455kHz Incoming signals from the an tenna are mixed with the local signal from the PLL to produce the first IF of 45 2 This is then mixed with the 44 595MHz second local oscillator output to produce the 455kHz second IF This is detected to give the demodulated signal The transmit signal frequency is generated by the PLL VCO and modulated by the signal from the micro phone It is then amplified by TX amplifier and am plifier and sent to the antenna ANT LI 148 174MHz M DM HDM 135 156MHz 2 1st MIX MCF RF SL ed SW AMP m b PA a TX AMP AMP 45 050MHz 193 05 219 05 MHz M DM HDM 181 05 201 05 MHz 148 174MHz 136 156 M2 DM2 HDM2 1 88 74
53. cond mixer second local oscillator second IF filter and FM detector IC7 mixes the signal input to with the 44 595MHz second local oscillator output of the crystal oscillator X2 to produce the second IF of 455kHaz The 455kHz signal then goes through 455kHz ce ramic filter 201 is amplified by the limiting amplifier demodulated by the quadrature FM detector lin the same and output to the receive audio amplifier 2 3 Audio amplifier unit The demodulated signal is amplified by 2 2 2 and goes through a low pass filter consisting of 403 1 2 a high pass filter consisting of IC403 2 2 and a BEF consisting of 405 1 2 to remove the unwanted audio signal The signal the passes through the de emphasis cir cuit consisting of the AF switch 0406 on and 405 2 2 and the volume level is adjusted by the IC6 D A converter The resulting signal goes to audio amplifier IC11 is amplified and is output to the speaker 2 4 Squelch circuit The detector output is amplified by 2 2 2 and passes through a high pass filter consisting of 401 2 2 which filters the noise components from the signal Q420 converts the noise pulse level by hysteresis and applies it to the CPU 409 The CPU counts the pulses integrates them and turns the squelch on and off according to the calculated value ANT 0208 208 207 D20 24 RF AMP BPF M MIX 2 2 tB B S TE S s3xt T 4
54. down for tuning data 2 SSG output OFF Transmitter Section 1 Set Panel tuning mode Tuning item 1 ig 1 PTT ON 11 Set panel tuning mode Tuning item 2 CH 1 Sig 1 PTT ON 1 Panel tuning made Tuning item 21 CH 2 Sig PTT ON 2 Tuning item CH 1 Sig ON 3 Tuning item CH 3 Sig ON 1 Set Panel tuning mode Tuning item 3 1 5 0 2 Deviation meter filter LPF 3kHz HPF OFF De emphasis OFF PTT ON 11 counter Adjustment Measurement aa Up down tuning data Up down for tuning data Up down for tuning data Make the de modulation wave form neat Squelch closed once Then squelch must be opened Squelch must be closed Specifications Remarks 100 2 M M2 DM DM2 than 27 0 HDM HDM2 More than 46 0 25 0W22 V 2 0 2 45 0W 1W HDM HDM2 MM2 DM DM2 25 0W Less than 7 04 HDM HDM2 45 DUAE TW 18551 than 11 04 25 0 2 M M2 DM DM 2 45 0 HDM HDM2 Flat the parts A 1 768 ADJUSTMENT Adjustment E EE r Powermeter Rear LUp down for Deviation panel tuning data According to the larger Specifications Remarks 1 Set Panel tuning mode Tuning 2 5 1 AG 2 50 Deviation meter filter LPF 15kHz HPF OFF De
55. e 34 Option See 35 KES 3 External speaker Option See page 26 See page 29 KCT 18 KCT 18 Accessory connection cable Ignition sense cable Option Option Delivery 768 REALIGNMENT 1 Modes Function CONVENTIONAL MODE This mode is for use as a trans TRUNKING amp marTrunk MODE Conver w TRUNING SmarTrunk MODE This mode used when a trunking TE board has been installed DEALER MODE This mode 15 used by the dealer __ __ Kik for making settings for the modes PANEL TEST MODE Dealer uses to check the Tunda PANEL TEST MODE i Mental characteristics E Dealer uses to tune the radio PANEL TUNING MODE PC MODE This mode 15 tha radio to PC IBM compatible It requires the KPG 29D DATA PROGRAMMING MODE This mode is frequency data and features write to the radio and read from the radio This feature is include the FPU TEST MODE This mode can check the radio PC control This feature is include tha This paragraph 15 85 Conventional mode Trunking SmarTrunk mode same as PANEL TUNING Switch between Conventional mode and Trunking mode by holding down the MONI key in POWER ON TR This can be selected when installed with board with the trunking Note The SmarTrunk call is a registered trade mode
56. emphasis OFF PTT ON 2 Tuning item CH 1 Sig 1 PTT ON 3 Tuning item CH 3 5ig 1 ON 1 Set Panel test mode 5 Maximurm deviation 4 05kHz 0 1kHz Oscilloscope waveform is 15 not abnormal kHz sensitivity 1 1 Osci AG TkHz 5mV scilogscope waveform Deviation meter filter is not abnorrnal LPF 15kHz If vou need to adjust HPF OFF you can adjust by VR401 on the TX RX unit 21 De emphasis OFF PTT ON 7 deviation 1 Set Panel tuning mode Tuning item 5 CH 1 585ig 5 D eviation meter filter HPF 50Hz PTI 1 Set Panel test mode Up down for 0 75kHz 50Hz tuning data 8 DTMF 224 583 7kHz deviation CH 1 Sig 9 Deviation meter filter pne Phils 402 LPF 15kHz n tha T 1 HPF OFF on the TX RX unit B Z ON Adjustment Points TX RX UNIT 2 L205 208 Sensitivity VR401 MIC sensitivity VR402 deviation 72 TK 768 H TERMINAL FUNCTION name SIXTY Relay for emergency function KAP 1 control signal Emergency on H Emerganey off 1 Mot used Not used action signal output External HOOK signal input On hook 1 hook H Igniti
57. f the microphone amplifier These are mixed with the audio signal and output to the splatter filter It then goes to the D A converter and on to the VCXO and VCO 6 3 RX decode data The receive detection signal passes through a low pass filter C412 1 2 to remove audio components This signal is input to pin 4 of the CPU The CPU digitizes this signal and decodes the sig nal decode IC410 on the control board 6 4 PLL data output PLL data is output from DATA pin 60 ENABLE pin 73 and CLOCK 58 of the CPU 12209 The sig nals are input to the PLL IC 1C202 when the channel is changed or when transmission is changed to reception and vice versa 6 1 12201 4 8 it EEPROM BUFR On RED E HF CPU 10409 DA FRE Exe J F 39318 092 BEBE APT 1 2 3 4 EN 5 HE 6 2 fi i pU E CPU 1C409 Xia fig CTCSS CTCSS IB CPU 16 BI RE CR CPU 10 TEE CR 5c IDC BURG 1 402 89455 Bis SI A I set Spa ae iat D A 106 VCXO dati iar VCO E 6 3 ERO AR CTCSS Rika Mia 10412 1 2
58. ft ware runs under MS DOS version 3 3 or later on an IBM PC XT AT or PS2 or on a compatible machine Data can be input to or read from the TK 768 H and edited on the screen Programmed data can be printed LEE 6 1 TK 768 H F RMT IBM PC KPG 4 KPG 29D SmE 1 TL Communication port 5 232 6 2 KPG 4 KPG 4 TK 768 H D SERIE 25 ATRL PRR RS 232 8938 4 TTL HE 4 TK 768 HSE 5 T8 Hi 25 5 E 9 6 3 RIER Fri KPG 29D TK 768 H 5 5 525 dk IBM PC XT AT amp PS2 MS DOS 3 3 TK 768 H 5 Bg s M TK 768 H HE Edd Safe EHE RT ELTT ED REALIGNMENT 1 6 4 Data Program Mode In this mode data is written into the EEPROM in the transceiver When the power is turned on data program mode can be entered immediately When the KPG 4 is connected and commands can be re ceived PC is displayed to indicate that data gram mode has been entered Tuning can be done using PC and 290 in the same way as in panel
59. function board model 5 885 21 mark of the Selectone Corporation PC MODE DATA PROGRAMMING MODE CLONE MODE 1 PC TEST MODE PC TUNING MODE 2 How To Enter Each Mode _______ USER MODE Usually Power then begin this mode DEALER MODE The A switch is held on with Power ON the radio The A switch holding about 2 sec after Power ON the radio PANEL TEST MODE D A switch is held an with Power ON the radio The D A switch holding about 2 sec after Power ON the radio But if this mode is disabled by FPU then begin the USER MODE PANELTUNING MODE The SCAN switch is held on with Power ON the radio The SCAN switch holdings about 2 sec after Power the radio But if this mode is disabled then begin the USER MODE PC The radia Power ON to begin the USER MODE when through to the microphone then begin this moda Note PANEL TEST MODE and PANEL TUMING MODE does not begin the PC MODE 3 Self Programing Mode 3 1 Setting the channels 2 When the MON key is pressed again the channel The dealer can set the functions such as frequency set mode is entered The display shows and signaling for each channel of the transceiver with There are channels 1 to 32 Then D A key incre out using the FPU ments the channel number and the SCN key dec remants the channel number Operation 4 he setting items are listed in Table 1 When the 1 Hold down the A key and tu
60. in 11 i 6465 MODULUS Tz 10 PRESCALER CONTROL LOGIC 1 TEST 8 SUPPLY CONNECTIONS TEST 12 Vcc INPUT AND 64 65 PRESCALER PINS PHASE FREQUENCY DETECTORS A AND 14 V TO BALANCE OF CIRCUIT T PIN7 GND COMMON GROUND 1 rr D 5 1 4 np i 1 v 5 rl em od 1 uia T LT TK 768 H b SEMICONDUCTOR DATA 5ft Power Module M67741H 32 M67741L 32 M67781H 32 M67781L 32 IC501 M67741H 32 677411 32 M2 DM2 67781 32 677811 32 Terminal connection diagram Equivalent circuit 1 Input 2 First stage power supply 2 Final stage power supply 0 4 Output 5 Fin Earth Reset Switch RH5VL42C TX RX Unit IC408 Terminal connection diagram Block diagram OUT VDD GND 48 K 768 H DESCRIPTION OF COMPONENTS TX RX UNIT 57 4950 21 M DM 22 M2 DM2 23 24 HDM2 Operstion Condion _ Powersupply __ ca Audio ampitier Detected output ON ica 5 _ Um D ee BU4094BCF 9 7 Audio power amie Lr NM ce icrs
61. ion nm 73dB Spurious and Image rejection 80dB Audio power output AW at 40 less than 5 distortion Frequency stability 40 000596 from 30 C to 60 Channel frequency spread 26MHz 20MHz Transmitter Measurements made per standard 1 52 RF power output TK 768 258W 768 45W Spurious and Harmonics 7048 Modulation nnnm F3E 5kHz for 100 1000Hz nnn 50dB 25kHzl Microphone impedance Low impedance Audio distortion 2 at 1kHz Frequency stability 40 000596 at 30 to 60 C Channel frequency speed 26MHz 20MHz 97 aes i um rp mn LADY
62. m the microphone goes to the micro phone mute switch 0403 off It then passes through the high pass filter in 402 2 2 and the pre empha sis IDC circuit in 12402 1 2 The signal is applied to the 404 summing amplifier and mixed with QT from the CPU IC409 It then passes through the splatter filter the fourth low pass filter consisting of 406 1 2 2 2 which removes unwanted harmonics output from the low pass filter is input to the D A converter to adjust the modulation DTMF 3 3 1 1418 sr ER GE TA 04038 IE 1 402 2 2 SE i 5485 IC404 CPU i CTCSS EAE 406 1 2 2 2 FUREY SS 354 68 25 T ob QR AR DIA ERA 16 14 10408222 ICA06 1 2 Fig 3 Microphone amplification 3 2 Final amplifier The signal from the PLL is amplified by drive ampli fier 0205 206 and power module IC501 to an out put level of 25W 45W and goes through the antenna switch D20 and harmonic filter and on to the antenna terminal 13 1 2 compares the DC input to pin 2 with the reference voltage at pin applied by 1 2 ampli fies the result and controls the DC amplifier Q22 and 023 to keep the transmit final current constant thus keeping the transmit output consta
63. nit 41 3380 20 Component side view SW unit 41 3380 20 Foil side view Component side Q Foil side n 83 T TEM 2 a n hr M La er m Ir 4 Fl k E T Pn LAC PE pr Ea sl z T 14 18 Wm zen 22271417 2 24 B 21 r Sie pe Iu s cx VENT E s ES 2 CE Me cR E IL Ja e LL amp OO T1 SPECIFICATIONS General Frequency range M DM HDM 148 to 174MHz M2 DM2 HDM2 136 to 156MHz Number of channels 32 semi duplex channels Channel spacing 25kHz channel step 5kHz 6 25kHz Input voltage 13 6V DC negative ground Current drain eens 0 44 on standby 1 0 on receive TK 768 on transmit TK 768H 12 on transmit Duty cycle Receiver 100 Transmitter 20 Temperature range 30 to 60 C 22 F to 140 F Dimensions amp Weight 140 5 51 W x 40 1 58 H x 170 6 73 D mm inch 1 0kg 2 20105 Receiver Measurements made per EIA standard ElA 204 D RF input impedance 500 Sensitivity EIA 1298 SINAD 0 25 Selectivity A ae intermodulat
64. nput to 202 Both signals are divided according to the division data from the control unit to produce a 12 5kHz signal The phases are compared and a phase difference sig nal is output and passes through the charge pump in 1202 and the low pass filter of the lug lead to produce the control voltage for 05 02 VCO This voltage is applied to D3 and D4 TX or D1 and D2 RX in the VCO unit to keep the VCO frequency constant The other output from Q3 is amplified by the RF amplifier 018 and output to the transmit or receive unit via the RF switch 017 4 EP JD 4 1 PLL HU Fl En 585 ATi Q5 2281 sk 02 WB PAR SME ERE EC I TX RX 281 14 Sic 05 02 Ay AS ASEH 05 02 fETX RX STR il Q4 QI fete 05 02 SA 7089 TX RX 0209 12202 PLL IC TX RX CPA VCXO 12 8MEz BJ PLL WERE S 1 59 A Bl 1 202 SF Ar ET Api HEA 12 5 0 S EH 120288 0502 VCO 70 9 03 44 2201 at DI AID LHE P 018 BAS 017 Hi
65. nt b 3 3 APC circuit The direct current that flows through the power module 10501 produces a voltage across resistors R108 This voltage is applied to pin 8 of IC13 2 2 and is input as the reference voltage difference of pin 5 and amplified 3 2 NWS H 38 Q205 0206 SG ACER K BRICK iA SI 25W 45W Xr IDE D 20 1 2 1 8 2 3 2554 X ERE RAM Aa 02281023 3 3 B ZEE FREE fit 6 Tl R108 Miar E F 1213 2 2 89956 FAS 9235 FRE T K768 H CIRCUIT DESCRIPTION FB BB 4 Frequency Synthesizer Unit 4 1 VCO PLL The PLL generates the transmit signal and the first local oscillator receive signal The RF signal generated by Q5 TX or Q2 RX in the VCO unit is amplified by Q3 and the resulting signal is output to the TX RX unit TX and RX Q5 and Q2 are switched by turning the source line for 05 and Q2 on and off This is done by 04 and Q1 using the control signal STR generated by the serial to parallel converter in the TX RX unit The RF signal passes through Q3 of the VCO unit and am plifier 0209 of the TX RX unit and is input to 202 PLL IC The 12 8MHz PLL reference signal generated by the VCXO X1 in the TX RX unit is also i
66. of the antenna DO NOT transmit until all RF connectors are verified secure and any open connectors are properly termi nated SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an explosive at mosphere All equipment should be properly grounded before power up for safe operation This equipment should be serviced by a qualified technician only SERVICE This radio is designed for easy servicing Refer to the schematic diagrams printed circuit board views and alignment procedures contained within NOTE WE CANNOT guarantee oscillator stability when us ing channel element manufactured by other than KENWOOD or its authorized agents Microphone SS ___ ___ E 768 SYSTEM SET UP Freq uency range MHz power Merchandise received RF TK 768 _ 148 174 _ _ 136 156 136 156 DM2 16 RF power 45W ILL Frequency range MHz MIC ACSY Teves DM2 Choose the type of transceiver See page 24 Tra nsceiver programming personal computer or compatible programming interface KPG 4 Self programing or software and programming software KPG 29D are required for programming gt The frequency and signaling data programmed for the transceiver KAP 1 See pag
67. on input far KCT 18 External modulation signal input MIL earth Internal MIC signal autput Externa MIC signal input Standard modulation at 6000 Externa PTT signal input GND TX Open Not used Audio mute signal input Mute Unmute Open MIC mute signal input Mute Unmute Foot switch signal input emergency moda 1 Emergency mode entry Horn alert control signal output signal output for horn relay drive lapen collector L level during horn drive max sink current 100 Earth Power output after power switch 13 84 1596 max Output for internallextemal speaker Earth distortion aa wer To Modulation signal output Power switch control signal output Power switch on OV Detection signal input MIC mute signal input External modulation signal input Not connection Audio signal output Common BV input MIC earth Internal MIC signal output External MIC signal input External HOOK signal input On hook hook Power output after power switch 13 64 15 KEY signal output TX H Clock output for PLLIshift register D A converter Data output for PLL shift register D A converter 5 meter voltage input Not use Lock detect input for PLL Lock Unlock
68. r cannot be turned The Horn Alert function can be turned on and off only if the function has been assigned to the AUX key AE R5 Scr OA X 1 18 AUX SR A BEST Er rui c e eamm _ Pp F 768 INSTALLATION 2252 3 Emergency Mode 3 1 Outline The transceiver can be modified to have the emer gency mode and installed in the car If the driver such as a taxi driver encounters a robber he can transmit an emergency signal to a base station automatically by treading on the foot switch installed on the floor of the Car The emergency mode can be activated when the power switch is turned off by changing the power switch function to the LCD display ON OFF switch function An external speaker may be sounded or lights may be flashed in emergency to warn robbers by modifying the option KAP 1 to the Horn Light drive relay output circuit and installing it in the transceiver Emergency mode system chart 3 1 t Pt S A i PIAS AL 38 E HEBERT HREM RAR m Tr RAMA So FFE 35 TJ BE
69. rn the power on and choice is changed and the CHYF key is pressed the keep the A key pressed for two seconds to enter displayed value for the current item is stored in the initial mode The display changes from PrOG memory and the next item appears to SEL 5 When the MON kev is pressed the initial mode SEL returns 10 REALIGNMENT Setting item Table 1 Function name Setting Defaults are underlined Display Channel select CH1 CH32 SCN Channel down CH 32 ID AI Channel up A frequency Hank CHA Frequency ON OFF select A Step select SCN 1 step down D A 1 step up WOLA MHz step up 100 550MHz 450 00625 MHz step down 5 6 25kHz step At 8 25kHz step dot light Right side CHA QT ON OFF select A 1 step standard select 87 0 250 3Hz SCN QT down 0 1Hz step standard D A QT up At 1 step dot light Rignt side CHA Frequency ON OFF select A Step select SCN 1 step down D A 1 step up VOLA MHz step up MHz step down 100 550MHz 450 00625 At 6 2bkHz step dot light Right side B B 25kHz step TX FLAG light QT ON OFF select A 1 step standard select iai ISCNI QT down 67 0 250 3Hz 1 67 0 D A QT up 0 1Hz step standard At 1 step dot light Rignt side 2503 TX FLAG light Sean DEWADD DEL iom ISCNIDEUADD D A DEL ADD select
70. s Greve aa B Sensitivity 0 255 Three point adjustment x x pr mau E HERH Te 2 WIR ECEE CR A 025 BURRE SL 0 25 Ch 025 us 1 mig UL El Ca ER 3 2 ME 2L HMHE LE 2C 2 AL K AC RAR CF 51 Hlc RUE EM 6 Ch au 5 WAF DOWN SERI I 5 2 67 TK 768 H ADJUSTMENT Common Section Measurement ome unt me Condition 1 Memary Frequency range MHz frequency 148 174 M 136 156 M2 2 2 Adjustment frequency MHz M2 DMZHDM2 12 87 21 22887312 161 000 16 100 146000 146100 Center 3 174000 173900 156 000 155 900 High signaling C Enoe Decode 2 100 J 3 OT 67 0Hzl tone OT 67 0Hz 4 tone 100 0Hz 5 QT 151 4Hz tone 151 4 2 6 210 7 tone OT 210 7 2 _ 7 250 3 tone T 250 3Hz Q 8 DTMF I633Hz 27 2 w i 9
71. s pressed as the version select key When the version is selected with the CH DOWN key the CH SELECT state of the tuning mode be comes effective The channel and signaling can be selected in the same way as in the test made The tuning items are listed in Tables 7 and 8 and key operations for tuning are listed in Table 6 DOT Channel Signaling T 1 Tuning item Tuning data Tung moce channel select Tuning mode tuning p Ree umm amm 1 Sew 1 EN S mmo FERRO EU Sp Table 6 MEN LLL eee b 768 REALIGNMENT Tuning item Panel tuning state transition Tuning description Valid range ET 0 265 2 RFpowwe 0 255 Three point adjustment 35555 EET 1 FREQUENCY RF power tloa 0 255 a lla MES power Cont RF power igh 0 255 oh _ 2 POWER BF POWER LOW Signaling balance _ 08688512 1 Max deviation 0 255 2 RF POWER CENTER Max deviation Low 0 256 MEN Max deviation Center Center 3 SIGNALING BALANCE 2H RF POWER HIGH _
72. s 15 pins and the necessary signal lines are selected for usa 1 1 Installing the KCT 19 in the transceiver 1 Remove the upper and lower halves of the trans ceiver case and lift the DC cord bushing from the chassis 2 Remove the pad 1 EE S S A KCT 19 E33 15 Bg plk ETE Exe 1 1 19 1 FE FE 2 0 7 FF ha RR S T 813 501 EEPROM 1 HAE 88 CA 30512218 E H FT A SEL Ff 2 Hk CVOLW dE DA E fu o BE MPA ji DL S ut BE ETT mE r UTITUR L EGET 1 i m F TT m TKJ68 H INSTALLATION 2228 Insert the KCT 18 cable into the chassis The wire harness band 49 must be inside the chassis Relocate the DC cord bushing in the chassis Connect the 19 to the TX RX unit A 2 as shown in Figure 2 69 Connect the 19 to the external accessory by in serting the crimp terminal into the square plug 6 both of which are supplied with the KCT 19 Square plug 09 1571 05 Crimp terminal E23 0613 05 3 18 19
73. s for channel operations are listed in Table 4 MON CHDOWN SIGDOWN Table 4 Frequency table for using on test mode M DM HDM M2DM2HDM2 CH 16110000 16100000 14610000 14600000 _2_ 14810000 14800000 13610000 13600000 174 00000 15590000 15600000 6 16510000 16510000 14710000 147 10000 7 15003000 15000000 15003000 156 03000 153 03000 153 00000 Signaling _ CY 20001 orem ornoa pi 75 onsa 77 01050388 DTMF single tone 16392 16838 single tone None encode tone 7 7 B52Hz 1209Hz DTMF decode Code 159 Alertz Yes Transpond Table 5 Channel signaling TK 68 H REALIGNMENT 5 Panel Tuning Mode When the tuning mode is entered the TUNING Tuning mode start display MODE START display appears for about one second and the VERSION SELECT state becomes affective This state is different from the VERSIOM SELECT state in the TEST MODE in that the dot at the lower right side of the display lights Use the following keys to select a version D A key UP The version is selected when the CH DOWN key i
74. signal input Mute T TPE OPEN FSW Foot switch emergency signal input L Emergency mode entry P dm Refer to Terminal function on page 74 if need description in detail Connect 5 of the radio to connector C of the KCT 18 instead of to the internal speaker connector if use external speaker 15 pin ACC terminal E REA L 18 WAKRA 0 HAR AE 450mVems 0 3kHz 338 X XR AMER i 6000 SmV 4 DC 35V 159 116V 156V PTT E rigidi iib W KH 4 5Vp p RA 4 1 2 a XE DC 9 6 kHz 1 C IkHz 048 mo HU a L 10 RM HEARS Enim T Ife CNS 19 RA E ifj ES T X muri ue EN EN La 1 a a cd si 18 ccm s m m o cocco semm c 6 INSTALLATION Zz3 amp 2 Ignition Sense Cable KCT 18 Option The KCT 18 is an optional cable for enabling the igni tion function The ignition function lets you turn the power to the transceiver on and off with the car ignition key If you use the Horn Alert function you can turn the f
75. t a m 4 3 Others If the HR2 are not necessary and the speaker output is output to an external unit through the 19 con nect the 19 C connector on the TX RX unit r i CN 124 L L Ina ls vm 4 e CEEI a ti ho UR P 5 5 9 4 4 3 NER m HR2 ae i 19 19 TX RX 5 10 HRI 12 LIO HAZ Fig 10 After modification 5 External Speaker 5 1 KES 3 Option The 5 3 is an external speaker for the 3 5mm di ameter speaker jack Connection procedure 1 Connect the KES 3 to the 3 5mm diameter speaker jack on the rear of the transceiver 5 Pa 5 1 5 3 1 WJ 3 5mm sid By 47 Fiat EEE 1 KES 3 iE i TEE 3 5mm EGGIE 4 768 36 INSTALLATION 2222 6 Fitting the Control Panel Upside Down The TK 768 H control panel can be fitted upside down so the transceiver can be mounted with its inter nal speaker in the upper half of the case facing down in your car 1 Remove the upper and lower case of the transceiver and remove the panel from the main unit 2 Remove the flat cable and ch
76. tuning mode You can carry out panel tuning by selecting test mode on the KPG 29D menu screen and following the instructions on the screen See the KPG 29D instruction manual for details 6 5 Clone Mode Figure 2 Programmed data is transferred from one trans ceiver to another by using a microphone cable 1 Turn tha slave set on 2 Hold down the CH W key turn the master set on and keep the CH Y key down for two more sec onds C appears on the display to indicate that clone mode has been entered 3 Connect the master set to the slave set 4 Press the MON key on the master set The mark appears and data is sent from the master set to the slave set appears on the slave set to show that it is receiving data 5 When cloning is complete the 27 mark on the mas ter set disappears and changes to The slave set is automatically reset and enters user mode If cloning fails the master set shows Re peat steps 4 and 5 If you wish to clone several sets switch each of them on and repeat 4 and 5 Note Do not connect an user moda radio to the other user mode one 6 4 Eig EUST EEPROM xk 34 KPG 4 fitr I BI RT PC PC KPG 29 XB LUE fr h FE RU O9 KPG 29 BERE SER np HE MGR 88
77. ultiplier 4 46 2nd number emis 1000pF 1st number 103 L Less than 10 0 1 0 25 0 5 2 Dimension Chip capacitor p Dimension code L w T 132 02 18x02 Less then 125 Dimension Chip resistor Dimension code w T Wattage 32 02 18 02 087 28 Rating wattage 2a wow 26 sa w EN rupan 1 wwr iW ER om 2 4 P K 5 1 T a 1 PARTS LIST 22 PF 0 2 New Parts 3 indicates safety critical components L Scandinavia K USA P Canada Parts without Parts Na are not supplied Y PX Far East Hawail T England Europe Las articles mentionnes dans le Parts No sont pas fournis Y AAFES Europa A Australia Other Areas Teile ohne Parts werden nicht geliefert TK 788 H UNIT 57 4950 FEE M NM M amp 7781H 32 IC POWER MODUAL m IE POWER MODUAL TK 768 H 0 211243 CABINET UPPER i CABINET LOWER TX RX UNIT X57 4950 XX AB2 0440 13 PANEL ASSY 21 22 M2 DM2 23 24 HDM2 B05 0235 05 B10 1230 04 11 1148 04 B11 1143 04 JACK UPE CODE LABEL CKT3GB1HTOZX CKT3GBTHT0ZK DKT3GBIH
78. unction off while driving with the ignition key 2 1 Connecting the KCT 18 to the transceiver 1 Install the KCT 19 the transceiver See the 19 section 2 Insert the KCT 18 lead terminal 69 into pin of the square plug supplied with the KCT 19 then in the square plug into the KCT 18 connector 2 18 KCT 181 amp 18 Inf FAP JT a Brad S tr AR d FE SRE RTE FH k p E E RE 2 1 18 18 1 KCT 19 KCT 19 5 2 3 KCT 18 KCT 19 8 3 8 5 KCT 19 Fig 3 768 29 MERIAH aa T INSTALLATION 3232 2 2 Modifying the transceiver Modify the transceiver as follows to turn the power or the Horn Alert function on and off with the ignition key 1 Remove the lower half of the transceiver case 2 Set jumper resistors 00 R5 and R6 of the 1 unit A 2 as shown in Table 1 Operation when 18 is connected Power on off and Horn Alert on off T m 2 2 CELESTE TI OH sc BA 27 KEDRA 2 2 1 RS Al R6 Enable Disable Table 1 R5 R6 setup chart KCT 18 cannot be connected c Powe

TK-768 i TK-768H

Contents

Download Pdf Manuals

Related Search

Related Contents