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TK-290 Service Manual - The Repeater Builder`s Technical

1. 3 Jn A m WOW Le ti OPT AUX gt t 4 OO 6 I X53 B 6 ER OA SHIFT 102 444dd ooo eoddtbb oodd lI e I ae A REGISTER Ber REVERSE ro a gt Ni Erol e CURRENT I DATA ol PREVENTION 3 E Jo Mivxolvolx I D16 OT Q OQ OGQ O 32 17 2 73 IMN10 Te 33 R63 A I I o D17 R50 1C4 6 I T DOES IRL 4 OPTION BOARD als nh KEY PAD 22 CONTROL SWITCH INVERTER OT LC75824W P10 510 BACKL GHT XOTI 2 0Y ER o I 9 R37 ICH TC7WO4FU m LCD DRIVER R34 R38 1 TC7SHO8FU I ES ES R39 BI amp xIC7 T 1 2 3 AFsrrevon t I i Bx S x od tee iss B I x S m nl D102 103 nb a 4 2 6 y GEM D101 FA Ha isto ists e ko SPEED UP num 4 17 18 q A oo 7 8 9 U I H t1 3 REVERSE J jaq mts TIT O o Ge CURRENT SHIFT o o Tn 4 PRERVENT I ON REGISTER X A j E MEN H H D o LL Ky TAAL I R22 See 100p ON N ZEN ro ro o I _ e NTNMTN O 1k St m Ga x ow Be d LI R23 xD14 5 cmo 220 almolm EN E H XRLO TOGGLE o R103 2 m la m H 4 ik R Z1 sw l SS Sais 10k in H R42 CBs DN I ca I ul d 2 zu 65a R104 10k alo 35 470p 47kx2 aa r gt aN a R53 I ri i x
2. FC2 amp sEMCZ101BIMS 107 NJM2904V 1C400 403 405 BU4094BCFV 10412 AT2408N10S12 5 IC600 LC73872M Q1 DTA114EE Q6 25C5110 0 Q10 304 404 DTC144EE Q303 DTA144EE Q402 FP210 Q411 2SB1132 Q R D4 6 401 409 MA2S111 D10 XB15A709 or MI809 D300 601 MA742 D602 603 MA2S077 1C3 M62354GP 1C200 GN2011 Q 1C401 402 TK11250BM 1C413 601 604 606 TC75W51FU IC602 TA75W01FU Q2 253144 GR Q7 DTC114EE Q13 412 414 601 602 2SK1824 Q305 UMC4 Q403 235243 Q413 HN1L02FU D5 302 303 DANZ35E D11 MA77 D400 1SR154 400 Fai el gt a d s i w X57 5390 10 104 MAX865 1C300 TA31136FN 10406 784214GC0648EU 10414 AT29C020 90T 1 1C603 M62364FP Q3 5 2SC4619 P Q Q8 2SC4988 Q200 3SK274x J Q400 405 UMG3N Q406 DTA123JE Q415 25J517 D8 DA221 D200 HsM88AS D402 403 NNCD6 8G I TX RX UNIT IC5 SA7025DK IC301 TC7S66FU IC409 PST9132NR 1C415 TC7SO2F 1C607 TC35453F Q4 301 408 410 25C4617 S Q9 DTA144EE Q302 2SK1215 E Q401 UPAS72T Q407 25C4215 Y D9 HZU4CLL D201 208 1SV273 D404 408 155301 RF POWER 1C801 ces gt iw mm lt lt a lt lt a lt lt lt r r lt rra lt wa 4 lt lt j a rm lt mm em at AMPLIFIER M68776 I CN404 R 0V RF AMPLIFIER NI RF AMPLIFIER o Met D400 98 25C5110 0 REVERSE a a RED
3. 71 KMC 25 26 SPEAKER MICROPHONE 72 KSC 19 CHARGER eee 73 KSC 20 RAPID CHARGER eee 73 KPG 36 PROGRAMMING INTERFACE CABLE 73 KRA 14 HELICAL ANTENNA 73 SPECIFICATIONS BACK COVER CAUTION When using an external power connector please use with maximum final module protec tion of 10V TK 290 GENERAL SYSTEM SET UP INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced techni cians familiar with similar types of commercial grade com munications equipment It contains all required service in formation for the equipment and is current as of the publica tion data Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions These are issued as required ORDERING REPLACEMENT PARTS When ordering replacement parts or equipment informa tion the full part identification number should be included This applies to all parts components kits or chassis If the part number is not known include the chassis or kit number of which it is a part and a sufficient description of the re quired component for proper identification Xb7 b39X XX X53 393X XX Model amp Ki PERSONNEL SAFETY The following precautions are recommended for person nel safety e DO NOT transmit until all RF connectors are veri
4. 2 Push Side2 to select SNS e xe x M SSG freq Center 3 Push Side2 to select SNS sk H SSG freq Hi 5 Sensitivity check narrow 1 Set panel test mode CH No 1 Signalling No 1 SSG output 116dBm 0 35uV MOD 1kHz DEV 1 5kHz Turn the toggle SW to the right narrow 2 Set panel test mode CH No 3 Signalling No 1 Turn the toggle SW to the right narrow 3 Set panel test mode CH No 5 Signalling No 1 Turn the toggle SW to the right narrow 6 Tight squelch adjustment wide 1 Set panel test mode CH No 3 Signalling No 1 Select SO T sk s in panel tuning mode SSG output 6dB above to 12dB SINAD level 7 Tight squelch adjustment narrow 1 Set panel test mode CH No 3 Signalling No 1 Select SO T3 in panel tuning mode Turn the toggle SW to the right narrow SSG output 6dB above to 12dB SINAD level 8 Squelch adjustment wide 1 Set panel test mode CH No 3 Signalling No 1 Select SO O gt sk in panel tuning mode SSG output 3dB below to 12dB SINAD level SSG AF VIVM Oscilloscope Distortion meter Audio analyzer Panel Side ANT Universal Top1 Top2 Adjust for maximum SINAD 12dB SINAD or more 12dB SINAD or more Adjust to point of opening squelch Adjust to point of opening squelch Item Condition ADJUSTMENT
5. AUX PTTIO E KEY B Aq MAND RXAEN EMERG RXIN BUSY TXIN A i l i l i I i mE EE EHI I i l l I I I l ITTTTTTTTTT e SC TK 290 CIRCUIT DESCRIPTION 10 1 Option port 1 For ANI board etc Port name Description Connection Abbreviation PCB Name DATI Data In Board data input Connected to the circuit Reference Transceiver Receiver demodulation circuit 1kHz STD Dev gt gt ANI board 250 350mVrms Data Out Board data output Connected to the circuit Reference ANI board gt Transceiver Transmitter modulation 1kHz 150mVrms gt circuit 2 5 3 5kHz wide 1 25 1 75kHz narrow TCONT T Control Audio amplifier power control gt Control unit X53 Microcomputer input L Audio amp on counter gt TX RX unit X57 microcomputer H Audio amp off STONE Side Tone AUDIH Audio Ihi Ground MUTE Mute SCALL Selective Call LED drive port for selective call Unused no connection AUX Aux Emergency Channel request Control unit Microcomputer input L EMG CH request X53 counter TX RX unit X57 microcomputer H No EMG CH request PTT PTT Microcomputer PTT logic gt AN
6. See X300 NE 45 305MH sas z NO l l _ _ mE STC sw gt sw EstT gt mo CONTROL X53 393 A 6 scc gt 5V gt 5v ys E re MIC Amp A 0401 0402 E DET INT MIC IC3 UPA572T FP210 5RC ou 5R2 a DTMF TX Main NJM2904V E EE Mute SW UMG3N 2 0406 EXT MIC M MIC SW AU D Gs DTA123JE 2SJ243 i udio Processor l DTC114EE ee IC607 INT MIC A TC35453F NC zz 0 0 0 Oooo EXE D A zz i MIC convertor 2 jen SEA f t H TXOUT IC605 CLKS TCISWSIFU l l Regulate Y 1 2 D A E AF Amp sw sP I 0407 SUM Amp M62364FP i SB j 2SC4215 AF e Yw TS Il ech Y X400 d i SEH o Osso TK11250BM RESET 3 579545MHz TC75W51FU T R LH 12MHz TC75W51FU SW i Y 2 2 LPF 10603 GER 2 2 i 1C409 JESA LL LSD Decoder ext 11 I PST9132NR Pl cas LPF i TDA7053AT z TC7W51FU gt A 02 _ 1 ESW gt 1 HSD eme OP 10413 IC600 PO PO TC7W51FU STD LC73872M l i 2 2 J l Latch IC406 p LPF 1 Flash ROM Microprocessor CC E i cais upc784214GC 8EU lt LSD lt i TC7S02F ili 5C 5R ili TIT if IC602 Adress 5T i Data gt TC75W01FU i I gt B y gt IC400 403 404 405 1 2 IC414 EEPROM p gt __ BU4094BCFV AT29C020 90TI e i Shift Register i lt DATA gt gt i IC412 AT2408N10SI2 5 TK 290 LEVEL DIAGRAM m O1Xu Tid J89MOd S OLJI JOjoed eo Buijdnoo 4d000 e esn uonoes 44 eui ul JE SE Jejeu A JY 9U1 199
7. Function name Remarks Select Group 1 160 ery save OFF Short Mid Long e out timer OFF 30s 300s 30s step pre alert OFF 1s 10s 1s step rekey time OFF 15 60s 1s setp reset time OFF 1s 15s 1s step Group Delete Add Delete Add AND OR Signalling Operation Select the setting value with the Top 1 Top 2 keys Press the PTT and the selected value is backed up and operation shifts to the next item for setting Press Side 2 on the Group selection screen in order to return to the Self programming mode initial display Note Different sample displays are shown Setting item No s are displayed with a 7 segment 2 digit figure on the LCD Self programming mode cannot be set when set to Dis able with the FPU Flow Chart Self programming mode Top 1 Top 2 Group setting mode Group selection Side 2 1 Battery save Side 2 2 Time out timer TOT Side 2 3 TOT pre alert Side 2 Side 2 5 TOT reset time Side 2 6 Scan group Delete Add Side 2 7 Signalling AND OR Side 2 Side 2 13 TK 290 REALIGNMENT 3 4 Function Setting Mode Flow Chart This mode allows making function settings for the trans ceiver After first entering Self programming mode select Self programming mode FUNC display with Top 1 Top 2 and then press PTT to set thi
8. d E d l z E 2 7 E E E a 3 z l gt x Fuse 136 174MHz X45 539 INT ANT BATT Protect Power Amp I NY 02 Drive Amp Drive Amp IC801 LPF 28J144 D4 M VCO TX RX LPF ANT Se ta SW M68776 I CX TX D400 1SR154 400 sw ita T B i P LN e NY RR Saat AM Ee I m 06 08 x DISPLAY X53 393 B 6 SB SW 7 4 EN 28C5110 2SC4988 _ ME L12 U j Power SW s 03 05 eps SW ice 2SC4619 2sc4619 D602 D603 ss W os vc SW DAN235E 2 D10 XB15A709 i X 0415283517 LMC7101L sw sw PALMAN Q 0412 25K1824 BIM5 v CURRENT c IC7 S 2405 2 7 MAX IC4 ee DET NUM2904V NJM2904V Q9 010 LCD Driver jus ed 865 DC DC SA7025DK DO 1 2 2 2 DTA144EE DTC144EE I 301 C 4 LPF LCD lt A E e y v RIPPLE 16 8MHz T R I i D405 1 2 LA O4 FILTER x1 Y 07 DG eg le PC p HSM GEI ic TV a DTC114EE SW Q13 1824 PES i LC75824W i 7 4617 TCXO sw l4 sw esc PROTECT TV y Ge i CTV gt d paz HA Wo t Db oi libus 20420 a i 15 TUNE I 4 204 205 27 7 PF2 2i gt a E lt M62354 DE Des S TO DAN235K DTA114EE Ve 206 207 208 6 2 D201 202 y l A Cd TX BUSY LED j fics TE ies m ae PC FM System IC TA31136FN IF Amp MCF BEF BPF RF Amp Q O egulate Toggle SW Ge XO A g I 44 85MHz Ny Mt i LAMP i i TK11250BM We PREG ee SEP Ped i L J 0302 XF301 IC200 L202 205 206 0200 L201 i OO SB 5M ES SOL ABBKHZ 281215 GN2011 3SK274 i RSSI 4
9. 1 SSG output 53dBm 501uV 2 Turn the toggle SW to the right narrow SSG output 53dBm 501uV SSG Panel ANT AF VTVM Side Oscilloscope Distortion meter Audio analyzer Universal Check 0 63V 0 3V 3 or less 0 63V 0 3V 5 or less 42dB or more BPF coil Use this adjustment procedure after replace ing any of the BPF coils 1 Set panel test mode CH No 1 Connect the spectrum analyzer to TP3 Signalling No 1 Push Orange to 3 point adjustment mode Select SNS 70 M Tracking generator Spectrum analyzer Adjust the BPF coil so that the waveform is peaked The frequency with the peak waveform does not have to be the center frequency After finished peaking the waveform perform a 3 point adjustment and set for maximum sensitivity RX BPF 010 011 REF 10 0dBm ATT 10dB A write B blank 10dB AMKR TG LEVEL 30dBm 155 4MHz 27 200Bm Center L Hi CENTER 155 0MHz SPAN 100 0MHz TK 290 ADJUSTMENT Measurement Item Condition Adjustment Test equipment Unit Terminal Parts Method Specifications Remarks 4 Sensitivity adjustment and check wide 1 Set panel test mode CH No 3 Signalling No 1 Select SNS kk in panel tuning mode Push Orange to 3 point adjustment mode Select SNS ck L SSG freq Low output 116dBm 0 35uV
10. function key or channel up down function key Press the key programmed to squelch level again the adjusted level is memorized and returns to the normal user mode 6 22 Squelch Momentary While pressing this key the transceiver unmutes speaker regardless of an existence of a carrier and MON appears and busy LED lights on Release this key the transceiver mutes the speaker and MON disappears and busy LED lights off 6 23 Squelch Off Press this key the transceiver unmutes speaker regard less of the existence of a carrier and MON appears and busy LED lights Press this key again the transceiver mutes the speaker and MON disappears and busy LED lights off 6 24 Talk Around Press this key the transceiver uses the receive fre quency and the tone for transmission The operator can call the other party directory without repeater Press this key again the talk around function goes off 6 25 Emergency Call Press this key the transceiver enters to an emergency mode In this mode the channel is switched to the pro grammed emergency channel automatically and starts transmission with an emergency ID code which is pro grammed to ANI board The display depends on Emergency Channel Display setting 6 26 SP Attenuation Press this key once the volume level of speaker micro phone is attenuated Press this key again the volume level of speaker microphone
11. l Priority 24 Talk back Squelch level SO LV 15 15 14 Priority 2 group selection PTT 15 Priority 2 channel selection PTT 16 Revert channel i Operation 1 Select the setting value with the Top 1 Top 2 keys 2 Press the PTT and the selected value is backed up and operation shifts to the next item for setting Ben IPTTI 3 Press Side 2 on the Group selection screen in order to return to the Self programming mode initial display Side 2 PTT Side 2 e Note 1 Different sample displays are shown 2 Setting item No s are displayed with a 7 segment 2 digit figure on the LCD 3 Self programming mode cannot be set when set to Dis able with the FPU 14 TK 290 REALIGNMENT 3 5 Clone Mode 1 Connect the cloning interface cable between the master side transceiver source and slave side transceiver clone as shown in the figure Cloning interface cable Part No E30 3325 05 2 Set the master side transceiver to Self programming mode and the transceiver display to CLONE with the Top 1 key or Top 2 key and press PTT Top 1 Top 2 PTT Top 1 Top 2 3 Set the power switch on the slave side transceiver to ON 4 The red LED on the master side transceiver flashes when cloning starts and an END message appears when cloning ends The green LED on the slave side transceiver flashes 6 When a problem occurs during cloning an E
12. Ch Ee op ee T TK 290 PARTS LIST TX RX UNIT X57 5390 10 Desti nation CC73GCH1H221J 220PF J 401 E40 5947 05 FLAT CABLE CONNECTOR CK73FB1C105K 1 0UF 403 E40 5856 05 FLAT CABLE CONNECTOR CK73GB1C104K 0 10UF 404 405 E23 0342 05 EST TERMINAL CK73GB1H102 1000PF C92 0560 05 10UF F400 F53 0143 05 FUSE Desti nation Ref No Address N Parts No Description Parts No Description CK73GB1H102 1000PF CD300 L79 1072 05 UNING COIL CK73GB1C104 0 10UF CF300 301 L72 0916 05 CERAMIC FILTER C92 0565 05 6 8UF CF302 303 L72 0939 05 CERAMIC FILTER CK73GB1C473 0 047U L92 0138 05 E CHIP C92 0003 05 0 47UF L92 0138 05 RITE CHIP CK73GB CK73GB CK73GB CK73GB CC73GCH L40 4775 44 FIXE 47 0NH L40 3981 37 FIXE 0 390UH L40 6875 44 FIXE 68 0NH 1085 44 FIXE 00 0NH 5675 44 FIXE 56 0NH NODO CK73GB 081 36 FIXE OONH CC73GCH 0149 05 CHI CK73GB 763 05 FIXE CK73GB 095 34 FIXE UH 5 C92 0714 L33 0765 0 FIXE NODO CK73GB CC73GCH CK73GB CK73GB CK73GB L33 1226 05 FIXE R L40 1092 81 FIXE R L40 4791 37 FIXE R 4 700UH 5 4 L92 0140 0 CHI L40 8275 4 FIXE R 82 0NH NODO CK73GB CK73GB CK73GB CK73GB CK73GB L92 0138 0 E CHIP L34 4492 0 L34 4493 0 L40 6885 3 DUCTOR 680NH L34 4493 0 NODO CK73GB CK73GB CK73GB CC73GC CK73GB L34 4492
13. The contents of ID are programmed for each transceiver 5 3 Busy Channel Lockout Transmission is inhibited when the channel is busy It is able to set this feature Yes or No for each channel 5 4 Beat Shift This is the feature that the microprocessor shifts its sys tem clock frequency slightly to prevent the receive interfer ence This transceiver can program this feature Yes or No for each channel 5 5 TX Power You can set the transmission power High or Low for each channel The each power setting is tuned at factory However you can re tune the power using PC Tuning Mode of KPG 38D 5 6 Wide Narrow You can set the occupied band width mode Wide or Narrow for each channel It is useful for the operator to use the transceiver on various sites 5 7 Scan Delete Add Scanning delete add is programmable for each chan nel Set the currently selected channel required to include in the scan sequence to add The operator can change the delete add information using the key programmed to delete add function 5 8 Compander This function reduces the noise on the communications channel used by the transceiver and improves reception If Wide Narrow function is set to wide this function doesn t perform TK 290 OPERATING FEATURES 6 Key Functions You can use these features using the programming soft ware KPG 38D Selector function is selectable channel se lect or group select The function
14. 0 volt bias is applied at frequencies lower than r1 t1 Frequencies r1 t1 through r2 t2 are biased with 3 volts Frequencies higher than r2 t2 are biased with 6 volts and at 174MHz tp 178MHz are biased with 9 volts The relation of VCO frequency versus PLL lock voltage is shown in Figure 11 The output of the VCO is amplified by the buffer amplifier Q3 and routed to the pin 5 of the PLL IC Also the output of the VCO is amplified by the buffer amplifier Q5 and routed to the next stage according to T R switch D602 603 The PLL IC consists of a prescaler fractional divider ref erence divider phase comparator charge pump This PLL IC is fractional N type synthesizer and performs is the 40 or 50kHz reference signal which is eighth of the channel step 5 6 25 or 7 5kHz The input signal from the pins 1 and 5 of the PLL IC is divided down to the 40 or 50kHz and compared at phase comparator The pulsed output signal of the phase comparator is applied to the charge pump and transformed into DC signal in the loop filter LPF The DC signal is ap plied to the pin 4 of the VCO and locked to keep the VCO frequency constant PLL data is output from DT pin 85 CLK pin 84 and LE pin 93 of the microprocessor IC406 The data are input to the PLL IC when the channel is changed or when transmis sion is changed to reception and vice versa A PLL lock con dition is always monitored by the pin 30 UL of the micro processor
15. Flange temperature 25 C Final Unit X45 3592 71 Use Function Operation Condition RF power amplifier Use Function Control Unit X53 3930 XX 11 K 12 K2 Operation Condition Audio power amplifier 0 5W 16Q BTL method Shift register MIC noise canceling circuit DC supply voltage Pins 3 12 Option board MAND control swi AND circuit MAND H OUT H when Q3 port is H DC control voltage Pin 2 4 RF input power 40 RF output power 10 Operating case temperature range 30 to 110 Storage temperature range 26 40 to 110 Option boa control swi ion boa rol swi AND circuit OPPTT H OUT H when OA port is H AND circuit MAND H OUT H when OA port is H Shift register Inverter LCD driver Power supply switch control AF amplifier power supply switch AF AMP SW H on Int audio mute switch INT AFC H INT SP audio signal on Audio mute switch signal off MUTE L RX audio Noise cancelling N C switch Ext audio mute switch N C switch H N C on EXT AFC H EXT SP audio signal on AVR AF AMP power supply Key pad backlight Reverse current preventi or number key pad Reverse current preventi or PF key Reverse current preventi or number key pad Reverse current
16. scan When scan stops on unnecessary channel for ex ample by interference of the other party activate the delete add function for example press the key then that channel is deleted temporarily and scan re start immediately When you would like to add the deleted channel tempo rarily to scan sequence select the desired deleted channel during scan activate the delete add function for example press the key before scan re start That channel is added temporarily to scan sequence The temporary deleted or added channels are returns to pre set delete add when the transceiver exits from scan mode 3 Optional Features You can use these features using the programming soft ware KPG 38D 3 1 Alphanumeric Display Group Channel Name The programming software KPG 38D enables you to set the alphanumeric display for group channel name The total text size of group and channel name are 7 digits For example If you set 2 digits for group name then you can use 5 digits for channel name The characters can be used as shown in Figure 1 E r HL P ap Ill HCT OTIL ABCDEFGH I I I MAITICITIC LIINIL d EP MESE NIS J K LMNO POR C up AZ 7 zo lI SAT Ae l S T U V W X Y Z l k TES Wb IC E EL E 123456789 TA M Vi VN All on 0 x Fig 1 3 2 Beep Tones The beep tones power on tone control tone warning tone alert tone are individually programmable to the fixed level 0 to 31 or follow the mechanical volume position 3 3
17. 0 L40 8275 4 DUCTOR 82 0NH L40 5675 4 DUCTOR 56 0NH L40 8275 4 DUCTOR 82 0NH 1272 0 1 NODO CC73H CK73G 38 05 1272 05 CK73H 8275 44 DUCTOR 82 0NH CC73G 1095 34 DUCTOR 1UH C92 0713 3391 37 DUCTOR 3 300UH Got opa py aY CK73 L92 0136 0 CC73 CH L92 0138 0 CK73 CH L40 1001 3 DUCTOR 10 00UH C92 0714 CHIP L92 0162 0 CK73 CH L78 0487 0 CC73HCH CH L92 0138 0 FI ECHIP CK73FB CH j L77 1798 0 16 8MHZ C92 0714 CHIP L77 1742 0 C AL RESONATOR 45 305MHZ CK73GB CH F L78 0453 0 ATOR 12 0MHZ C92 0560 CHIP L77 1708 0 AL RESONATOR 3 579545MHZ CK73GB1C CH CK73HB1H CH CK73HB1A CH CK73GB1C333 CH CK73GB1E153K CH L71 0588 0 44 85MHZ CP1 R90 0714 0 COMP 10K X4 CP700 707 R90 0741 0 IPLE RESISTOR CP711 716 R90 0741 0 IPLE RESISTOR CP718 721 R90 0741 0 IPLE RESISTOR R92 1252 0 CHIP R 0 OHM C EE S CK73GB1H102 CH CC73GCH1H101J CH CK73GB1E103K CH 100 0 0 RK73GB1J 100K J 1 16W RK73GB 47 J 1 16W E40 5563 0 FLAT CABLE CONNECTOR RK73GB1J 100K J 1 46W aan TK 290 PARTS LIST TX RX UNIT X57 5390 10 Desti nation Desti nation OK J G 2K J 6 8 J 33 56K J 00K 0 J 2 2K 00K G 270 Address Parts No Description Address Description RK73GB1J103J RK73GB1J
18. 2W 2B 1 8W 2H 1 2W 28 TK 290 PARTS LIST New Parts A indicates safety critical components L Scandinavia K USA P Canada Parts without Parts No are not supplied Y PX Far East Hawaii T England E Europe Les articles non mentionnes dans le Parts No ne sont pas fournis Y AAFES Europe X Australia M Other Areas Teile ohne Parts No werden nicht geliefert TK 290 FINAL UNIT X45 3592 71 CONTROL UNIT X53 3930 XX Desti nation TK 290 1A 29 5173 EY TOP SIDE KEY 1A 29 5193 2 EY TOP DTMF A02 2139 63 CABINET ASSY 2A 29 5220 LEVER KNOB BATT RELEASE A02 2140 63 CABINET ASSY 2B 29 5282 0 OB ASSY VOL A10 4015 2 CHASSIS 2B 29 5283 0 OB ASSY ENC A22 2501 25 SUB PANEL ASSY A62 0537 53 PANEL ASSY 1A 29 5441 04 OB ASSY SIDE KEY Address N Parts No Description Address N Parts No Description B03 0594 04 NG PLATE ACCESSORY 2B 14 0578 04 CIRCULAR NUT VOL ENC B09 0363 03 ACCESSORY 2B 14 0594 04 CIRCULAR NUT ANT CONNECTOR B11 1183 14 ATION GUIDE 3A 30 2608 45 HEAD MACHINE SCREW 6 6 B38 0786 05 3B 67 2606 4 HEAD SEMS SCREW B42 3394 14 ARD LABEL 78 2030 4 HEAD TAPTITE SCREW B43 1111 14 GE 79 2035 46 HEAD TAPTITE SCREW B62 0816 30 RUCTION MANUAL G 83 2004 46 HEAD TAPTITE SCREW B72 1288 14 ODEL NAME PLATE 99 2004 05 SCREW SET ACCESSORY D32 0421 24 OPPER R31 0638 0 VARIABLE RESIS E23 1163 04 T TERMINAL S60 0408 15 ROTARY SWI
19. 38D setup This mode cannot be entered if the Main Program mode is set to Disable in the Programming software KPG 38D 4 4 Function 1 If you press the Top 2 switch while PROGRAM is dis played the checksum is displayed If you press the Top 1 switch while the checksum is displayed PRO GRAM is redisplayed If you press the Top 1 switch while PROGRAM is dis played 1 dot light M to indicate that the write speed is low speed 19200 bps If you press the Top 1 switch again while low speed 19200 bps 2 dot lights M to indicate and the write speed becomes the high speed mode 38400 bps The communication speed changes 19200 bps 38400 bps 57600 bps 3 dots and 115200 bps 4 dots every time you press PTT and Top 1 Note Normally write in the high speed mode When the Flash ROM is replaced the initial communica tion speed for writing becomes 115200 bps 5 Panel Test Mode Setting method refer to ADJUSTMENT TK 290 CIRCUIT DESCRIPTION 1 Overview The KENWOOD model TK 290 is a VHF FM hand held transceiver designed to operate in the frequency range of 136 to 174MHz the unit consists of a receiver a transmit ter a phase locked loop PLL frequency synthesizer power supply circuits a control unit 2 Circuit Configuration by Frequency The receiver is a double conversion superheterodyne with a first intermediate frequency IF of 44 85MHz and a second I
20. 5W E30 3322 08 Lead wire with plug assy Maximum input 1 5W Dimensions 62 W x 81 H x 29 D mm J29 0644 08 Clip assy Weight With plug cord Approx 0 17kg J42 0495 08 Bushing 72 KMC 25 26 Circuit Diagram Universal connector 1 gt SP MIC EXT ANT KMC 26 of Bo SP O SP id a If the earphone jack output is too S SCH s high adjust the value of resistor R12 V Earphone R12 0 jack 93 5 AW 5V O s e D x x Ls xz SZ Shield KMC 25 MIC O H 101 T KMC x 350 ECH 25 More q MAIN 1 f 1 rig 25V x Il ro Ege 001 13 13 ale NI ME Te H I s Wy cT W ola Bele Lo I ru Lg ru I KMC 26 e se l d I bd PTT Sw2 Fl PFO x Y SSW o 2 I 8 i MSW 0 4 PF1 d PF2 d E O KMC 25 26 Parts List x New parts Parts No Description A02 2092 08 Case Front A02 2253 08 Case Front A02 2093 08 Case Rear A02 2254 08 Case Rear S70 0459 08 Tact switch T07 0359 08 Speaker T91 0584 08 MIC element N08 0535 08 Dressed screw TK 290 KSC 19 CHARGER KSC 20 RAPID CHARGER KPG 36 PRO GRAMMING INTERFACE CABLE KRA 14 HELICAL ANTENNA KSC 19 External View KPG 36 External View KSC 19 Charging KNB 17A Voltage RA 7 2V Battery capacity sssssssseeeeeeeees 1500mAh Charging me Approx 8
21. 7 5 Key input KM or KI2 becomes HIGH when any key is pressed or Enable signal on the optional circuit When KI1 or KI2 becomes HIGH KIO also becomes HIGH to trigger the interrupt to 1C406 in order to start the key scan When the key scan starts the output terminals 01 05 become LOW Only the key sensing circuit remains HIGH When a key is pressed the signal is routed through KI1 or KI2 to the microprocessor Then the microprocessor deter mines which key is pressed using this signals ICH CLK DAT STB 01 02 O3 O4 05 IC4 TC7SH08 FU V Fig 14 Key input 21 TK 290 CIRCUIT DESCRIPTION 7 6 Low battery warning The battery voltage is monitored by the microprocessor IC406 When the battery voltage falls below the voltage set by the Low Battery Warning adjustment the red LED flashes to notify the operator that it is time to replace the battery If the battery voltage falls even more approx 5 5V a beep sounds and transmission is stopped Low battery warning The red LED flashes during transmission The red LED flashes and continuous beep sounds Battery condition The battery voltage is low but the transceiver is still usable The battery voltage is low and the transceiver is not usable to make calls while PTT pressed 8 Signalling Circuit 8 1 Encode The CPU IC406 transmits the encode data selected by the program Low speed data OT DOT Low speed data is output from
22. CURRENT DC SWITCH VOLTAGE RF Sw PREVENTION Q1 PROTECTION I 9 FREQUENCY DTA114EE e R67 ANT SWITCH O m SHIFT US L M DA221 a10 DTC144EE I n TEMPERATURE X COMPENSAT I ON EDU T 2 8V Hi M 010 2 0V Lo Res R d BUFFER 3 SWITCH 10k AMPLIFIER q as sas ssw O I CODE mto 25C4619 P 0 m 852 Idle DC SWITCH DTA144EE C403 inc m SEN 10k DC SWITCH e C42 D602 603 APC COMPARATOR SP O NEE IC600 DIME 0406 ri TX RX SWITCH IC7 Seel ES D404 p o DATA c 155301 LE738725 DECODER x600 BYAY233E A NJM2904V 1M 3 579545MHz IN kk os 1 hu C s I jk ed INPUT vool Buy Do AOUT V MSW O loz o H NC3 D ER a 0 01u R 6 4V E Ee ES A IN BOUT TOV EMC O s E osco STO S A IN B IN 8 e R59 ep pc i po am 3 ere o ADDRESS 100k o o ae eos DECODE vss LOAD PTT O REGI Ge 199 26 75 TITTI t 23 SHIFT VOXTBR OL RMT ON NT OSOMSOUmU mn 10415 g SHIFT REM O j 8222800moo2 ooo ob5oBPL P62 A18 TC7SO2F U REGISTER REGISTER I Sich P1207RTPO dWwa r rrrrrrrrovk H i BU4094BCFV P121 RTPI FOkLIIRI3Z3R3Aj lt P61 A17 afine vec e o GE 1C405 NC O TXIN 1 Bresvog H PP 122 RTP2 DEES P60 A16 Zus 2 STB BU4094BCFV BU4094BCFV D201 202 TA of 3 a Vu os P123 RTP3 aa Soe jS oe vss1 3 GNDOUTY 2 1 pere 1 A Ere vool o VARACTOR Ed L207 EO RXAEN o P124 RTP4 2858 PS7 A15 n D A CONVERTER voon ara oe para oE D TUNING I 3 oe P125 RTPS 2000 P56 A14 VDDA aso a Eu 82n R222 C224 L210 L211 en O PTT HO po P126 RTP6 P55 A13 IC414 sty 25K 1824 oz o7 o a
23. Deviation 1 lation waves into meter square waves Oscilloscope AG Universal AF VIVM TK 290 Item Condition ADJUSTMENT Measurement Adjustment Test equipment Unit Terminal Parts Method Specifications Remarks Maximum deviation adjustment Wide 1 Set panel test mode CH No 3 Signalling No 1 Select MDV kk in panel tuning mode Push Orange to 3 point adjustment mode Select MDV kk L AG 1kHz 150mV Deviation meter filter setting LPF 15kHz HPF OFF PTT ON 2 Push Side2 to select DV dem x M PTT ON 3 Push Side2 to select DV dem x H PTT ON 9 Maximum deviation adjustment narrow 1 Set panel test mode CH No 3 Signalling No 1 Select MDV kk in panel tuning mode Turn the toggle SW to the right narrow Push Orange to 3 point adjustment mode Select MDV kk NL AG 1kHz 150mV Deviation meter filter setting LPF 15kHz HPF OFF PTT ON 2 Push Side2 to select DV kk NM PIT ON 3 Push Side2 to select DV ck N H PIT ON 10 MIC sensitivity check 1 Set panel test mode CH No 3 Signalling No 1 AG 1kHz 15mV Deviation meter filter setting LPF 15kHz HPF OFF PTT ON 2 Turn the toggle SW to the right narrow PTT ON Power meter Deviation meter Oscilloscope AG AF VIVM Panel ANT Universal Top1 Top2 3 95kHz According to
24. EH 222292 C CJ C2 2 CO CHE CH CH CO CHE CH CH EE C2 C3 E 2 C9 C9 3 C2 O 0 00 o CJ CJ CJ C7 N 68 J 100 10 22 330K 27 100K 22 DE DE DE DE ER DIODE DE DE DE TK 290 PARTS LIST TX RX UNIT X57 5390 10 Desti nation Desti nation D200 HSM88AS DIODE 0407 28C4215 Y TRANSISTOR D201 208 SV273 VARIABLE CAPACITANCE DIODE 0408 410 2SC4617 S TRANSISTOR D300 A742 DIO 0411 2SB1132 0 R TRANSISTOR D302 303 DAN235E DIO Q412 25K1824 FET D400 SR154 400 DIO 0413 HN1L02FU FET Ref No Address Parts No Description Ref No Address Parts No Description D401 A2S111 0414 2SK1824 FET D402 403 NCD6 8G ER DIODE 0415 2SJ517 FET D404 SS301 DE 0601 602 2SK1824 FET D408 SS301 DE H301 157 104 65001 HERMISTOR D409 A2S111 D601 A742 D602 603 MA2S077 C2 LMC7101BIM5 C3 62354GP C4 AX865 SA7025DK LMC7101BIM5 OS JM2904V 0S GN2011 0 OS A31136FN OS C7S66FU OS BU4094BCFV OS C401 402 K11250BM OS C403 405 BU4094BCFV OS C406 784214GC0648EU PU C409 PST9132NR OS C412 AT2408N10S12 5 OM 0413 C75W51FU OS C414 AT29C020 90TI OM 0415 C7S02F OS C600 LC73872 0S C601 C75W51 OS C602 A7SWOTF OS C603 62364FP 0S 604 606 C75W51F OS C607 C35453F OS 01 DTA114EE DIGITAL TRANSISTOR 02 2SJ144 GR FET Q3 2SC4619 P RANSISTOR 04 2SC4617 S RANSISTOR 05 2SC4619 P
25. IECH Rea SEE ls GND ANT a S TP6 Op C660 ZS Pele R450 C421 S St E Component side Address Ref No Address Ref No Address Ref No 2SB1132 IMN10 2SB798 UMC4 2SC4988 5 3 4 d l E 1 s B 1 c mem B E 2 Foil side DA221 MA742 155301 2SK1215 25 144 25 517 UPA572T HSM88AS s 1 A2 E D D gt RE R 1 c S G S 3 D 56 G H J K L M N O P Q R TX RX UNIT X57 5390 10 Foil side view Boag Address Ref No Address Ref No Address Ref No Address Ref No ls PC BOARD VIEW IK 290 asro TIITII Au ul E dE e B ES UT e DIO la UJ Gai Eg 33 wl Ok III M Un A oy So RSHA Bl GI ei He uev BEE R307 EE EJ ES IES M Caca TI GU L v3j E6v8 it 9 T nb Sl TOv X400 80 9 eelere cl Q Y 9 alls Wp Vo E ENG LO E T N 9089 PECH 60rd I L E SEC SEO Los SCH J 72 0519 32 Component side HN1L02
26. Key input Not use PTT signal input Noise canseler microphone switch output Not use Clock data output Data output GND Power output after power switch Power output after power switch 5V MIC GND MIC signal input Audio output Audio GND Audio GND O O Key scan IC O6 output Key scan IC O7 output Backlight LED control Normally OV Lighting 7 5V For optional board See page 22 For optional board See page 22 Audio mute signal input BTL output for external speaker BTL output for external speaker Audio GND Audio GND Audio output MIC signal input MIC GND 5V Power output after power switch Power output after power switch GND Data input ock data input Not use Noise canseler microphone switch input PTT signal output Not use Key output Key output TK 290 TERMINAL FUNCTION KNB 17A Ni Cd BATTERY Function Not use Key scan IC clock data input Key scan IC reset input Internal speaker switch input External speaker switch input Audio AMP control switch input For optional board See page 22 For optional board See page 22 Audio GND Audio GND 06 Key scan IC O8 signal output Key scan IC O7 signal output PTT GND Normally 5V transmit when connected GND Key input Key scan IC O6 signal output N 0 QO OQ N N BTL output for internal sp
27. Measurement Adjustment Test equipment Unit Terminal Parts Method TK 290 Specifications Remarks 9 Squelch adjustment narrow 1 Set panel test mode CH No 3 Signalling No 1 Select SO O gt in panel tuning mode Turn the toggle SW to the right narrow SSG output 3dB below to 12dB SINAD level 10 Squelch check wide 1 Set panel test mode CH No 3 Signalling No 1 SSG output 118dBm 0 28uV 2 SSG output 127dBm 0 1uV 11 Squelch check narrow 1 Set panel test mode CH No 3 Signalling No 1 Turn the toggle SW to the right narrow SSG output 118dBm 0 28uV 2 SSG output 127dBm 0 1uV Adjustment Point E Component side 1C607 1C603 X600 SSG AF VIVM Oscilloscope Distortion meter Audio analyzer Panel Side ANT Universal Top1 Top2 Adjust to point of opening squelch Bi Foil side Squelch must be opened Squelch must be closed L201 L202 Squelch must be opened Squelch must be closed 49 e C TK 290 PC BOARD VIEW FINAL UNIT X45 3592 71 Component side view J72 0654 12 50 D E A a e c TK 290 PC BOA CONTROL UNIT X53 3930 XX 11 K 12 RD VIEWS K2 Component side v
28. Set panel test mode 37dB or more S N check CH No 3 narrow Signalling No 1 Turn the toggle SW to the right narrow Deviation meter filter setting LPF 300Hz HPF 3kHz De emphasis 750us PTT ON 21 BATT 1 Set panel test mode Power meter Panel ANT Orange Write the voltage detection CH No 3 level writing Signalling No 1 DC VTVM Bottom BATT Select BATT sk sk sk terminal in panel tuning mode PIT ON Item Condition ADJUSTMENT Measurement Adjustment TK 290 Test equipment Unit Terminal Parts Method Specifications Remarks 22 BATT detection check 1 Set panel test mode CH No 3 Signalling No 1 BATT terminal voltage 5 3V PTT ON Power meter Panel ANT DC VTVM Bottom BATT terminal terminal voltage 6 5V ON Receiver Section Item Condition Measurement Check Adjustment Cannot transmit LED TX blinks Transmit Test equipment Unit Terminal Parts Method Specifications Remarks 1 AF level check 1 Set panel test mode CH No 3 Signalling No 1 SSG freq Each freq output 53dBm 501uV OD 1kHz DEV 3kHz 2 Turn the toggle SW to the right narrow SSG freq Each freq output 53dBm 501uV OD 1kHz DEV 1 5kHz Hum and noise ratio check 1 Set panel test mode CH No 3 Signalling No
29. When the PLL is unlocked the UL goes low ice 1800 O5 D602603 VC D gt seo BUFF drive amp To mixer IC3 IC406 DT CLK LE Fig 9 PLL block diagram r1 r2 512 t1 t2 CV voltage Frequency MHz Fig 10 CV voltage vs frequency 6 Power Supply Circuit Battery B is supplied via a 3A fuse from the battery ter minal connected to the TX RX unit After passing through the power switch power supply SB is applied to the two AVR ICs and AVR circuit IC401 supplies 5V 5CM to the control circuit IC402 supplies 5V 5M to the common circuit AVR circuit 0400 0402 0405 0406 supplies voltage to the TX circuit and the RX circuit 5C is common 5V and output when SAVE is not set at off 5R is 5V for reception and output during reception 5T is 5V for transmission and output during transmission SB 5M sw Nu sw 0401 0402 400 405 SHIFT CLK DT REGISTER 1 g STB1 IC400 5M OE DAT Fig 11 Power supply circuit TK 290 CIRCUIT DESCRIPTION 7 Control Circuit The control unit consists of microprocessor 1C406 flash memory IC414 and its peripheral circuits It controls the TX RX unit and transfers data to and from the control unit The CPU 1C406 mainly performs the following 1 Switching between transmission and reception by PTT signal input 2 Reading channel frequency and program data from the memory circuit 3 Sending frequency program data to the PLL 4 Cont
30. front case is still connected to the chassis by the FPC at this time so be gentle when lifting upwards otherwise unwanted stress is applied on the FPC The front case and chassis can only be opened to the side when connected by the FPC O Chassis Remove the TX RX Unit from the Chassis 1 The TX RX unit cannot be removed simply by removing the seven screws 0 2 A total of 9 solder connections 6 on the RF power mod ule and 3 on the antenna daughter board O must be disconnected Remove the Universal Connector 1 The universal connector is fastened to the chassis with double side tape 2 First unsolder the connection on the antenna daughter board O 3 Press firmly with a tool such as a screwdriver and so that it can peel QD Note You must replace both parts together when re placing the universal connector or the FPC D 38 Remove the Side Key Assy 1 The side key assy is clips form a slide hook structure Lift up gently and take from the side Side key assy The waterproof packing for the front case cannot be removed unless the control unit is detached Chassis Disassembly of the Panel Assy 1 The LCD assy and toggle switch are joined by wire PD Use caution not to break this wire during handling Toggle switch Panel assy TK 290 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications Sta
31. is set to L transistor O14 turns off so Sub microphone turns off and operation is the same as above IC MAIN 0403 D601 un MIC NIC o o sw uv Her AMP One SUB CONT IC603 IC605 1 2 A 0404 TONE Fig 8 4 3 Drive and Final amplifier The signal from the T R switch D602 is on is amplified by the pre drive O6 and drive amplifier 08 to 20mW The output of the drive amplifier is amplified by the RF power amplifier IC801 to 5W 1W when the power is low The RF power amplifier consists of two stages MOS FET transistor The output of the RF power amplifier is then passed through the Transmit Receive TX RX antenna switching D10 is on and the harmonic filter LPF and the Internal External INT EXT antennal switching in the univer sal connector and applied to the antenna terminal Inthe ANT universal 06 08 IC801 D10 connector From Pre DRIVE i RX EXT INT T R SW DRIVE AMP i ANT D602 AMP sw R35 ON gt EXT B REF VOL IC3 Fig 7 Drive and final amplifier and APC circuits 4 4 Internal External INT EXT antenna switching The INT EXT antenna switch housed inside the universal connector only switches to the EXT ANT side when an an tenna speaker microphone has been installed This INT EXT antenna switch works mechanically and switches based on the operation shown in Figure 8 EXT ANT Switch OFF From LPF INT Internal ANT antenna Switch O
32. jibda t XR5Z be ol E m R55 m cz l q LED Q E L101 ZN 4 I EXENEEEEI _ U duel ue lal 10101 LC75824W I dr 8333355 221 D12 MA25111 R45 Tk ORANGE D101 158373 4 R46 Es alleys D102 103 B30 2231 05 R47 Ak 1 E PTT X57 5390 10 D104 B30 2019 05 D13 MA2S111 R48 1k Ee H gt X RX UNIT D15 MA2S111 R49 Tk D12 13 15 19 20 a SIDE 1 REVERSE CURRENT x ph PREVENT I ON 4 1 R12 1k R13 47k SIDE 2 5 Sen Z3 5 I MES En L AUDIO I MOC Dan MUTE SWITCH 5 0V 100k ink A A a EE SIGNAL OFF Gg 798 RI th 25K1824 FD L9 C14 5 27k R17 R4 O tu Sarees INT SP I T x RE OV 47k 47k a a 06 y m FLIRI 4 8V C12 BED UTER UTERE AMP POWER T OV Ve INT AUDIO AUDIO POWER 19 7 4N TS A SUPPLY SWITCH S 0 47u MUTE SWITCH AMPLIFIER Al RE 4 8V RE OV 0 47u L6 C10 1000p RI ON RI 2 0V IC1 It T 0V T 0V TDA7053AT a MICA mes 258798 DL DK PE UTo j CANCEL ING INT MIC dn a Be CIRCUIT MAIN Si o Ka o 6 ox u O a LC3 SH i o R18 RS NJM2904V 4 MIC2 AVR a EXT AUDIO I POWER SUPPLY m 47k 47k RE 2 0V MUTE SWITCH INT MIC SWITCH CONTROL B oi C43 E Se N C as mm a tar R67 25C4617 8 NN Lo 0 47u 915 i 58 5T9 2SK1824 o ti i 3 N m xX m N Ki N a UTO wen D l o UT S TIT D HT mo NOISE CANCELL ING SWITCH I I s B oa S wa s p S E E z See 7 D6 D7 D8 D9 D11 D14 D17 D18 R19 R20 R31 R37 R38 R39 R40 R41 R42 R50
33. key PTTID ID OFF OFF ON Orange Add or delete frequencies in Channel TX power POW HI High Low setting mode Busy channel lockout BCL OFF OFF ON Toggle Flipping this to the right while in Beat shift SET OFF OFF ON Channel setting mode shifts to MHz steps Channel step display Attach the lead wire with plug or lt 5kHz step Side 1 Side 2 Power on SEL lt 6 25kHz step em Top 1 Top 2 FUOD I j PTT l lt 7 5kHz step GROUP Top 1 NETA Top 2 L1 IICTI 1 2 PTT qo lt 2 5kHz step FUNC i Top 1 Top 2 PTT CLONE lt 1 25kHz step 12 TK 290 REALIGNMENT Operation Select the setting value with the Top 1 Top 2 keys Press the PTT and the selected value is backed up and operation shifts to the next item for setting Press Side 2 on the Group selection screen in order to return to Self programming mode Note Different sample displays are shown Setting item No s are displayed with a 7 segment 2 digit figure on the LCD Self programming mode cannot be set when set to Disaable with the FPU Ared LED lights up during TX frequency and TX signal ling Press Orangel on the TX RX frequencies setting screen in order to clear in the channel frequencies data Press Orange on the signalling setting screen in order to change or off the signalling f
34. preventi or PF key Reverse current preventi or number key pad Reverse current preventi or PF key Speed up LCD backlight LED Red green DESCRIPTION 0F COMPONENTS TX RX UNIT X57 5390 10 Use Function Level shift Operation Condition Use Function TK 290 Operation Condition Post amplifier D A converter adjustment DC DC converter Outputs twice the input voltage 5M Phase locked loop system 2nd IF W N switch sets to on when Narrow 2nd IF W N switch sets to on when Wide Level shift APC comparator VCO system Active DBM TC H on CC H on TC H on FM IF system 2nd mixer Quadrature detector AF output Noise amplifier output S meter output egulator 5T 5C IC mute IC switch 5CC H on C400 Audio mute switch Shift register Output expander Clock frequency shift 5R C401 Voltage regulator 5CM DC switch TX LED Red driver C402 Voltage regulator 5M DC switch Busy LED Green driver C403 405 Shift register Output expander DC switch Lamp C406 Microprocessor 16 bit Current driver Lamp Backlight C409 Voltage detector Reset DC switch SB C412 EEPROM Active filter For HSD output DC switch BATT voltage detector
35. printed out It is also possible to tune the transceiver We recommend that install KPG 38D for example to harddisk first then use It KPG 38D instruction manual part No B62 0814 XX Fig 3 1 Mode TK 290 REALIGNMENT User mode Self programming mode Panel test mode Firmware programming mode Mode Function User mode Customer use this mode PC mode Communication between the radio and PC IBM compatible It requires the KPG 38D PC programming mode Frequency signalling and features write to the radio and read from the radio PC test mode Check the radio using the PC This feature is included in the FPU Self programming mode Frequency signalling and features write to the radio Panel test mode Refer to Adjustment Dealer use to check the fundamen tal characteristics Firmware programming mode Re write the firmware of the flash ROM 2 How to Enter Each Mode Mode Operation User mode Power on PC mode Power on begins the USER MODE Self programming mode Hold down the Side 1 key and the Side 2 key turn the radio power on Panel test mode Firmware programming mode Hold down the Side 2 key and PTT turn the radio power on and release PTT first Held down the Side 2 key and PTT turn the radio power on and release Side 2 key first 3 Self
36. returns to the previous level 7 2 Tone Built in 2 Tone decoder decoder program 1 decoder pro gram 2 decoder program 3 is available for option signalling It is possible to use individual call or group call 8 DTMF Built in DTMF encoder is available for dialing Manual dial Auto dial 9 memory Re dial 1 memory Keypad model only Built in DTMF decoder is available for option signalling It is possible to use individual call group call DBD Dead Beat Disable 9 Data Programming PC Mode 9 1 Preparation and Connection TK 290 transceiver is programmed by using a personal computer programming interface cable KPG 36 and pro gramming software KPG 38D The programming software can be used with an IBM PC or compatible machine Figure 3 shows the setup for pro gramming 9 2 Programming Interface Cable KPG 36 Description The KPG 36 is required to interface TK 290 to the com puter It has a circuit in its D sub 25pin connector case that converts RS 232C logic level to TTL level KPG 36 is used to connect between TK 290 universal connector and RS 232C serial port of computer 9 3 Programming Software KPG 38D Description KPG 38D is the programming software for TK 290 sup plied on a 3 5 floppy disk This software runs under MS DOS version 3 1 or later on an IBM PC XT AT or PS2 or compatible machine The data can be input to or read from TK 290 and edited on the screen The programmed or edited data can be
37. scanned The transceiver must be in normal receive mode PTT off When you activate the key or the toggle switch to right position programmed to the scan function the scan starts The scan icon SCN lights and SCAN or revert channel programmable is indicated on 7 digit alphanumeric display 2 3 Scan Stop Condition The scan stops temporarily if the following conditions are satisfied 1 A carrier is detected then signalling matches on chan nels for which receive the signalling is set by the pro gramming software 2 A carrier is detected on the channel for which receiving signalling is not set by the programming software or when the monitor signalling cancel function is activated 2 4 Scan Channel Types 1 Priority channel 1 is the most important channel for the scan and always detects a signal during scan and when the scan stops temporarily Priority channel 2 is the next important channel for the scan and always detects a signal during scan and when the scan stops temporarily at a channel other than priority channel 1 Non priority channels detects a signal during scan For the channels that can be selected with the group or chan nel selector when the scan does not occur adds an indi cator A lights 2 3 2 5 Priority Channel Setting Priority channels 1 or 2 can be set as follows with the programming software KPG 38D 1 Specify priority channels 1 or 2 as fixed priority channels 2 Make
38. selected channels priority channels 3 Operator delectable Specify the initial channel before the operator changes it 2 6 Scan Type According to the Priority Channel 1 When no priority channels are set Only the non priority channels are scanned If a non priority channel stops temporarily it stops until there is no signal on the channel 2 When one priority channel is set Either priority channel 1 or 2 is scanned If a non priority channel stops temporarily a priority chan nel signal is detected at certain intervals If a priority channel stops temporarily it stops until there is no signal on the priority channel 3 When two priority channels are set The non priority channel priority channels 1 and 2 are scanned If a non priority channel stops temporarily priority chan nel 1 and 2 signals are detected at certain intervals If priority channel 2 stops temporarily the priority chan nel 1 signal is detected at certain intervals If priority channel 1 stops temporarily it stops until there is no signal on priority channel 1 2 7 Revert Channel The revert channel is used to transmit during scanning and set by the programming software KPG 38D 1 Priority 1 The transceiver reverts to the priority channel 1 Priority 1 with talkback The transceiver reverts to the priority channel 1 If you press PTT during a resume timer dropout delay time TX dwell time or calling you can transmit on cur rent channel to answer t
39. the larger 50Hz 1 90kHz According to the larger 1 8kHz 3 6kHz 0 9kHz 1 8kHz Item Condition ADJUSTMENT Measurement Adjustment Test equipment Unit Terminal Parts Method TK 290 Specifications Remarks 11 OT deviation adjustment wide 1 Set panel tuning mode CH No 3 Signalling No 1 MIC input OFF Select OTDV sk sk in panel tuning mode Deviation meter filter setting LPF 3kHz HPF 50Hz De emphasis 750us PTT ON 12 OT deviation adjustment narrow 1 Set panel tuning mode CH No 3 Signalling No 1 MIC input OFF Select OTDV sk sk in panel tuning mode Turn the toggle SW to the right narrow Deviation meter filter setting LPF 3kHz HPF 50Hz De emphasis 750us PTT ON 13 DOT deviation adjustment wide 1 Set panel test mode CH No 3 Signalling No 1 Select DODV sk sk sk in panel tuning mode Deviation meter filter setting LPF 3kHz HPF OFF PTT ON 14 DOT deviation adjustment narrow 1 Set panel tuning mode CH No 3 Signalling No 1 Select DODV sk sk sk in panel tuning mode Turn the toggle SW to the right narrow Deviation meter filter setting LPF 3kHz HPF OFF PTT ON 15 DTMF deviation adjustment wide 1 Set panel test mode CH No 3 Signalling No 1 Select DTDV sk sk gt in tuning mode Deviation meter filte
40. the main 7 digit 13 segment display indicates group or channel name 3 11 Invert Display Main 7 digit 13 segment display and sub 2 digit 7 seg ment display can be programmed to invert display It is easy to read the display when the operator sus pended the transceiver on a waste belt The operator also can change the display between normal and invert using key Refer the invert display function of key function 3 12 Clear to Transpond The transceiver waits the transpond of 2 Tone DTMF if channel is busy until channel open This feature prevents the interference to other party 3 13 External Speaker It can be selected if the receive sound is made by SP Mic SP or the main body SP at a SP Mic mount 3 14 Noise Cancelling MIC Enable or disable the noise cancelling function of the in ternal microphone It is not valid for the external SP MIC TK 290 OPERATING FEATURES 3 15 Mode Enable Disable The transceiver has many special modes mainly for main tenance Self Programming mode Panel Test mode Clone mode Firmware Programming mode Version info lt is possible to set enable disable for each mode We recommend to set these mode to Disable after set up to save contents 3 16 ID The transceiver is capable to have ID The format is DTMF MSK or ANI board if installed The timing that the transceiver sends ID is programmable Connect ID Connect ID is send on beginning of trans mission D
41. the signal High speed data DTMF The DTMF input signal from the FM IF IC IC300 is ampli fied by IC601 2 2 and goes to IC600 the DTMF decoder The decoded information is then processed by the CPU During transmission and standby the DTMF IC is set to the power down mode when the PD terminal is High When the line is busy the PD terminal becomes Low the power down mode is canceled and decoding si carried out e MSK The MSK input signal from the IF IC is amplified by IC601 2 2 and gose to pin 5 of IC607 The signal is demoduated by MSK demodulator in IC607 The demodulated data goes to the CPU for processing MSK IC607 B AF IC 1C602 IC600 DTMF DECODE C607 5 xour OSC PD Fig 16 Decode TK 290 CIRCUIT DESCRIPTION 9 Compander Circuit The TK 290 contains IC607 TC35453F to perform this operation The term compander is a compound of compressor and S Pin 16 Compressor input pin expander The compander reduces noise by utilizing a com Pin 18 Compressor output pin pressor and an expander Pin 43 Expander input pin As shown in Fig 17 the signal input to the compressor is compressed so that the logarithmic ratio is 1 2 with refer ence to 10dBV and then output onto the transmission path The signal is expanded by the expander so that the logarithmic ratio is 2 with reference to 10dBV This re duces noise on the transmission path and prevents deterio ration of the signal qua
42. the transmission power of all channel changes to Low Press this key again the transmission power returns to programmed value 6 14 Monitor Monitor the channel before a transmission Press this key once MON appears and unmutes speaker if a carrier is present regardless of the specified signalling including option signalling Press this key again MON disappears and mutes speaker Press this key after the Option Signalling is matched the Option Signaling is reset and monitor is activated DBD Dead Beat Disable mode is not reset by this operation 6 15 Monitor Momentary While pressing this key the monitor function refer 6 14 is activated Release this key the monitor function is de activated 6 16 Operator Selectable Tone This key switches the pre set decode OT DOT and en code OT DOT to OST Operator Selectable Tone tone pair Press this key the transceiver enters to OST select mode In this mode the display shows OFF and the op erator can select one of the OST tone pair using the channel up down key or the group up down key The display shows TONE gt 3 and tone pair No gt is selected Press OST key again the transceiver exits from the OST select mode and returns to the group channel mode with OPT icon OPT icon means that the OST tone pair is selected OST tone pair number or OFF can be memorized for each channel 16 kinds of tone pair for OST can be programmed by KPG 3
43. 25 VOLTAGE POR d SHIFT M AUDIO AT2408N10S12 5 RER eR405 LMC7101B1M5 MUTE ula DETECTOR A u eR17 4 l3 DC SWITCH SURGE 1C409 SDA GND 3 3k 3 3k leur PUT 313 22p 1C605 300 2 ABSORPTION PST9132NR Ee JEFO PU 0400 402 405 vb D402 TEST A1 5 v OUTPUT i H s1C606 DC SWITCH Nc VCC ACTIVE NNCD6 8G DC SWITCH Aver vcc AO FILTER TC75W51FU 0405 ACTIVE FILTER 20404 SUMMING ACTIVE UMG3N AlveezouT 4 DTC144EE 10413 EEPROM iil eas FILTER als TE7SWS FU R635 39k D A CONVERTER C mo 8 R 01 a M62354GP oT 1JouT 4 o U eC14 PR T 1 R300 INC IE 2 7k Do vcc hr ICH 2 2303 a AM DETECTOR Ge 22 DTA144EE eee i C2 MAX865 LD VDD N y 0201 3 RF SWITCH RF SWITCH MATSO STE SURGE Z INte efs UPAS72T LMC710181M5 T cae CLK AOS Saa E ss NNCD6 8G ABSORPTION C416 s a Zo v 4 pi AOS 0303 304 DAN235E DAN235E 1 eu 2 3 DC SwITCH 0304 470p 8 E Kai ci 7 AN Dann 404 DTC144EE 0 22u T H ourpUT V GND DC CONVERT LF AMPLIFIER I 6 8u 10 Injufx E u ofxjojoj C488 I I I I 13 12 A I I L SWITCH IN B ve Im mp Al louT eN A 1000p 22p 5 6 7 8 pue 3 C323 D300 laoz Ao3 0301 7 Sa ella 25C4617 S DC DC
44. 3 BLU 7 lor prt sw I I BRN 10 I 1001 10V RED 2 Z 160 BLK 3 H 1004 10V 1 WHT I I I I I I I I l AF Voltmeter I e 101 10V BRN 6 Audio generator e PC tuning Connect the wires to the PCB in the connector case of interface cable For output the wires out of the connector case need to process the connector case KPG 36 Remove the screw Connector case PCB layout qeg JOOHJOV i HA 91 100 u 10 V AF voltmeter I zs I I I i 104 10V l o I Audio generator I I Shield Repair Jig Chassis Use jig part No A10 1399 03 for repairing the TK 390 Place the TX RX unit on the jig and fit it with 7 screws Note Supply power from an external power supply Battery terminal jig chassis Battery terminal TX RX unit How to Remove the Flat Cable 1 Gently draw out both sides of the connector lever uni formly in the direction of the arrow with tweezers CN 101 CN400 2 Gently rise up the connector lever in the direction of the arrow with a fine regular screwdriver or tweezers CN1 CN3 CN401 CN403 Note Gently push both sides of the connector lever when put in the flat cable Regular screwdriver Flat cable TK 290 ADJUSTMENT Clear function Pressing PTT while holding down Orange in Panel test mode triggers the clear function which clears
45. 333 73GB1H C334 73GB EEN 236743 NODO C73GCH1H680J C73GCH1H200J 73GB1H102K C73GCH1H220J C73GCH1H680 C335 CK73GB1H C336 CK73GB1A224 C337 CK73FB1C334K C C C400 401 C73GCH1H101J C403 411 C73GCH1H101J COOC CH CH CINCO C73GCH C73GCH C73GCH C73GCH C73GCH C413 CK73GB C414 CK73GB C415 CK73FB1 C416 417 CK73GB C419 C92 0589 0 CO CH CH c0 CH COOC CC CC73GCH CK73GB1H CK73GB1H C92 0560 05 CK73FB1C 0420 092 0702 C421 CK73GB1H C422 73FB1C C423 424 K73GB1H 736B C C CD CD C2 I NO o C73GCH 73GB1H C73GCH 73GB1H 73GB1H C426 O CH EH CH C C C2 CD C2 NOOO 73GB1H C73GCH C73GCH C73GCH 73GB1H102K C434 435 a eX en A e COOC CH CH CO CH CH CH CH C73GCH1H060D C73GCH1H151J C73GCH1H070D 73GB1H471K C73GCH1H151J C437 C438 C439 C440 C441 442 DOG OA j EN C3 C 3 COOC CH CH 73GB1H471K 73GB1C104K C73GCH1H151J 736F1A105Z K73GB1H102K c 445 446 C447 448 2 2 CX C3 T CO CHOCO CH CO CH CH CH CH o o 736B1H102K K73GB1C273K C73GCH1H060D 73GB1H472K C73GCH1H221J a C456 477 C478 C479 C3 j C3 CH COOC CH CH CO CH 0 CH CH Do CO CD
46. 41 Panel test mode Side 2 holding about 2 sec LCD all lamp mode A l l BE A SCN MON LO OPT AUX TK 290 ADJUSTMENT Common Section Measurement Adjustment Item Condition E Specifications Remarks tee Unit Terminal Parts Method P 1 Varicap shift 1 Set panel tuning mode DC VTVM TX RX TP2 Top1 0 1V voltage Push Side2 to select Top2 Mid VSWM 3k High 2 Push Side2 to select VSWH sk sk sk Voltage change 1 Set panel tuning mode frequency Push Side2 to selec Low Mid oh ok ok Gk RX r1 TX 2 Push Side2 to se TES ti 3 Push Side2 to se ETS r2 4 Push Side2 to se XOKK Kok k t2 L Caution When adjusting transmit power and sensitivity connect the cable to the SMA antenna connector on Transmitter Section the top panel At this time use the antenna less type jig connector E30 3287 08 in the universal connector Measurement Adjustment Condition E I Specifications Remarks e Unit Terminal Parts Method p Frequency 1 Set panel test mode Power meter Panel 1 155 000MHz adjustment CH No 1 f counter 1 Signalling No 1 Select FRO ak ak sk in panel tuning mode When the TCXO X1 is replaced perform the frequency tune PTT ON in PC tuning mode from the FPU menu Maximum 1 Set panel test mode Power meter Panel 5 0W or more power CH No 3 check Signalling No 1 A
47. 49 451 R452 455 R456 459 R460 462 R464 R467 468 R469 R470 472 R474 R475 477 R478 R479 R480 R481 RK73GB1J103J RK73GB1J102J RK73GB1J103J RK73GB1J472J RK73GB1J103J RK73GB1J473J RK73GB RK73GB1J473J RK73GB1J103J RK73GB1J102J RK73GB1J473J RK73GB1J RK73GB1J RK73GB1J R92 0670 R92 1252 RK73GB1J RK73GB1J RK73GB1J RK73GB1J RK73GB1J RK73GB1J R92 1252 RK73GB1J R92 1252 RK73GB1J RK73GB1J R92 1252 RK73GB1J RK73GB1J RK73GB1J RK73GB1J RK73GB1J R92 1252 RK73GB1J RK73GB1J RK73GB1J RK73GB1J RK73GB1J R92 1368 RK73GB1J RK73GB1J R92 1252 RK73GB1J RK73GB1J RK73GB1J R92 1252 RK73GB1J RK73GB1J R92 1252 R92 1252 RK73GB1J RK73GB1J RK73GB1J RK73GB1J RK73GB RK73GB RK73GB RK73GB1J R92 1252 05 R618 R619 R621 R622 R623 R624 R626 R628 R629 R635 R636 637 R638 R639 R640 R641 R642 R643 R644 R645 R646 R647 R648 R649 R650 R651 R652 R653 R654 R655 R656 R657 R658 R659 R660 R661 R662 R663 R664 R665 666 R668 R669 R670 673 R674 R675 R677 R679 R688 R742 R743 R922 R923 924 D4 D5 D6 D8 D9 GB HB HB GB 1252 1368 GB1J GB1J GB1J 1368 0 A2S111 DAN235E A2S111 DA221 HZU4CLL 1809 XB15A709 A77 CO CHE CH CH CO CHE CH CH EE
48. 682J RK73GB1J563J RK73GB1J100J RK73GB1J104J COOC CH CH 736B1J184J 736B K73GB 736B 736B 80K G 00 6 8 50 COOC CH CH 0 736B 73GB1J101J 736B1J224J 73GB1J472J K73GB1J223J COOC CH CH 736B1J104J K73GB1J471J 73GB1J122J 73GB1J103J 73GB1J223J COOC CH CH RK73EBZER39K R92 1252 05 RK73EBZER39K RK73GB1J222J RK73EBZER39K CHOCO CH CH 73GB1J822J 73GH1J154D K73GB1J180J 73GH1J154D 73GB1J101J CO CHOCO CH CH RN73GH1J154D RK73GB1J101J RK73GB1J470J R92 1252 05 RK73GB1J103J CO CHOCO CH T RK73GB RK73GB1J152J RK73GB RK73GB1J104J RK73GB1J105J COOC CH CH RK73GB1J104J RK73GB1J221J R92 1252 05 R R K73GB1J103J 73GB1J102J COOC CH CH RK73GB1J39 R73 RK73GB R74 RK73GB1J101J R R R75 73GB1J102J R76 73GB1J101J COOC CH CH R77 RK73GB1J560J R79 RK73GB1J104J R82 R92 1252 05 R200 RK73GB1J473J R201 RK73GB1J104J CO CHOCO s CH R202 203 RK73GB1J103J R204 RK73GB1J121J R205 RK73GB1J104J R R R206 73GB R207 73GB1J100J C CHOCO CH TK 290 TX RX UNIT X57 5390 10 Parts No Description PARTS LIST Desti nation Ref No Address N Description Desti nation R426 427 R428 R429 R430 R431 R432 433 R434 R435 436 R437 R438 441 R4
49. 7 5390 10 RK73GB1J 5 6K R92 1252 0 OHM C92 0560 05 RK73GB1J 0K 736B1H102K RK73GB1J 47 92 0560 05 73GB1H102K 2 0588 05 P TA UF 6 3WV p C E P TA 6 3WV p F P TA SUF 16V QOD Qi T CO CH CH CH e RK73GB RK73GB RK73GB RK73GB RK73GB GB1C 588 0 GBIC GBIH 588 0 PC P TA PC PC P TA OO DUO CO CH ECH CH T RK73GB1J RK73GB1J R92 1252 GB1C RK73GB1J RK73GB H PC P TA PC PC P TA DOLO OE T RK73GB RK73GB RK73GB RK73GB RK73GB PC PC PC PC PC C C C CB CH RK73GB1J RK73GB1J RK73GB1J R92 1252 RK73GB1J EO Cy Cs Gy T RK73GB1J R92 1252 R92 1252 RK73GB1J RK73GB1J CO CH ECH CH RK73GB RK73GB RK73GB RK73GB RK73GB O SO TK 290 PARTS LIST TX RX UNIT X57 5390 10 Desti nation Desti Address u Description nation Address E Description 0 10UF 1000PF 0 010UF 1000PF 1 0UF oo 09090 PRADERA C73GCH C73GCH 73GB C73GCH 73GB DUF 03 22PF 0 0 me NOOO 736B 73GB K C73GCH1H070D C73GCH1H101J K73FB1C474 eOocdococd NOOO GB 92 0512 05 C73GCH1H101J 73GB1H103K 73FB1C474K 73GB1H102K 92 0560 0 73GB1H 330 332 K73GB1H C
50. 8D OST is useful to access the repeater with same radio frequency and different tone OT DOT 6 17 Operator Selectable P1 If priority channel 1 is setas Fixed and None in the scan information The operator can select the priority chan nel 1 using this key operator selectable fixed P1 Press this key on normal channel the channel becomes to priority channel 1 Previous priority channel 1 returns to the normal channel Press this key on the priority channel 1 the priority 1 will be lost no priority 1 6 18 Operator Selectable P2 If priority channel 2 is set as Fixed and None in the scan information The operator can select the priority chan nel 2 using this key operator selectable fixed P2 Press this key on the normal channel the channel be comes to the priority channel 2 Previous priority channel 2 returns to the normal channel Press this key on priority channel 2 the priority 2 will be lost no priority 2 6 19 Scan Press this key starts scanning Pressing this key stops scanning 6 20 Shift This key activates Shift Key function It is useful when the numbers or more of the functions are necessary TK 290 10 OPERATING FEATURES 6 21 Squelch Level The preset squelch level is varied in user mode 0 to 15 Press the key programmed to squelch level the trans ceiver enters to squelch level adjust mode The squelch level can be adjusted by group up down
51. C222 O 470p 82n BE 8 9 P127 RTP7 P54 A12 AT29C020 90T 1 ese 21603 TXFI WUTE Geen Before F v 9013 Saxe TxD O PTT O VDDZ PS3 A11 Mari DEZ Me M62364FP EMBO SWITCH vss os sb 150p m 67 25K 1824 FEW I TXOUT A PIRAN AS A10l 6 S4 kum wine 24 wenn SIS DTC114EE DC SwITCH isa RXD O 4 x1 P51 A9 A8 TE c o 1C607 CCHG Ne a LAMP 10406 VI eet DC SwITCH a al D200 Eo mum vss2 P50 A8 A13 107 63 aire vods TC35453F R 1 9V0 1u A q HSMBB S NC O OFF ov xT 2 784214GC0648EU P47 AD7 63 A14 106 62 e vinz vw FOMPAN T on a a pees XT 1 P46 AD6 62 A17 105L 61 loo al AUDIO PROCESSOR ALCO OVERLOAD cnaf cN 04 RESET MICROPROCESSOR P45 ADSL 61 WE 104L 50 h Lo PROTECTION Q 33 IPOO INTPO P44 AD4 60 vcc 103 69 i11 D VA rei CALC a7 32 PO1 INTPI P43 AD3 5s NC GND ceo z 33 m m ACTIVE DEM LAMP f 131 P02 INTP2 NMI P42 AD2 58 A16 102 Tezswstruli bee linis wel Hrs O RF AMPLIFIER SD TO 29 IP04 INTP4 s E P40 ADO 56 A12 100 BUFFER 5 8 obra VoUT 0602 TES G1 G2 4 0200 MUTE 28 P05 INTPS KEIER P87 A7 A7 AO AMPLIFIER Kan A i5 23i 1824 SA7025DK pa cel a E 2 m m ISK274xJ sP 127 P06 INTP6 o SINSE P86 A6 A6 A1 13 DC SWITCH 20 1000p o p SES T 0V R 0 7V SP 26 DAT non dO NN VSS Xx PASAS R610 11 EK MB AVDD 2 22 ZZ 00UD0UJNOO AS A2 ha 19 m m K AFE 25 DAT O AVREFO umeZZZ XX xxmnxxuoJ3 obDo w P84 A4 R653 DATA TESTI N n N REEGELE EEGEN A4 A3 56k IsrROBE Lock 18 u os s x afm AFE 2 TCONT PAO ANIO 2222 5S S
52. CONVERTER INCA We no mao LEVEL SHIFT alamo Be OTe NOISE AMPLIFIER T I I I I I I I I I I I th D205 206 D203 204 I I I I I I I I I I 64 Lun sr c a Dn A E ee H A TK 290 SCH EMATIC DIAG RAM Note Components marked with a dot are parts of pattern 1 1 CH TDA7053AT as 2SC4617 S D2 DTZ3 9 B or UDZ3 9 B te 102 BU4094BCFV Oe 2SB798 DL DK D12 13 15 19 20 MA25111 103 NJM2904V 07 8 15 2SK1824 D16 IMN10 DIS le II le jp le X53 3930 XX A 6 ICL 6 TC7SHOBFU Q14 UMCA CONTROL UNIT C1O TC7WOZAFU
53. DC switch Power supply switch Flash ROM DC switch SB Address decode latch NOR gate ute switch MIC line mute DTMF decoder DC switch Buffer amplifier oise rejection Active filter LPF for LSD input D A converter Adjustment Frequency shift 2nd local cutoff frequency Summing amplifier Buffer amplifier AF TO Current steering D8 Temperature compensation Summing amplifi MOD Summing amplifier D9 Voltage protection Active filter LPF for 2 tone D10 11 ANT switch Audio processo D200 Overload protection DC switch T R H RX D201 202 Varactor tuning For L201 DC convert swi D203 204 Varactor tuning For L202 RF amplifier Buffer for RF input D205 206 Varactor tuning For L205 Ripple filter 4C D207 208 Varactor tuning For L206 Buffer amplifier D300 AM detector Noise squelch RF amplifier TX drive D302 303 RF switch 2nd IF wide narrow DC switch APC circuit power switch D400 Reverse protection D401 Overload protection RF amplifier TX drive D402 403 Surge absorption DC switch APC voltage control D404 Reverse current prevention DC switch APC off Speed up D408 Reverse current prevention DC switch D A port protection D409 Voltage reference R
54. E F G H J K V 1st word 0 1 0 125 16 20 25 315 40 5 0 6 3 8 0 _ 1 10 125 16 20 25 31 5 40 50 63 80 35 2 100 125 160 200 250 315 400 500 630 800 3 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 Chip capacitors Dimension Chip capacitors EX CC73 FSL1H 000 J Dimension code L W T l Refer to the table above Empty 5 6 0 5 5 00 5 Less than 2 0 AE CU E O ihe A 4550 5 3 2 0 4 Less than 2 0 Chip CH RH UJ SL 2 Shape B 4 5 0 5 2 0 0 3 Less than 2 0 3 Dimension C 4 5 0 5 1 25 0 2 Less than 1 25 EX CK73 F F 1H000 Z 4 Temp coefficient D 3 2 0 4 2 5 0 3 Less than 1 5 1 2 3 4 5 l 6 7 5 Voltage rating E 3 2 0 2 1 6 0 2 Less than 1 25 6 Value F 2 0 0 3 1 25 0 2 Less than 1 25 Chip B F 7 Tolerance G 1 6 0 2 0 8 0 2 Less than 1 0 H 10 0 05 0 5 0 05 0 5 0 05 RESISTORS Dimensi n Chip resistor Carbon L EX RD73 E B2B 000 J IT ESSES qe Tob ge IE 8 Ee 3 1 2 3 4 5 6 7 Chip B F m W Carbon resistor Normal type Dimension Chip resistor EX MER UD MT Qe S EE Dimension code L W T 1 2 3 4 5 6 7 E 3 2 0 2 1 6 0 2 1 0 F 2 0 0 3 1 25 0 2 1 0 1 Type ceramic electrolytic etc 5 Voltage rating G TOE 02 HS 02 oe 2 Shape round square ect 6 Value S E 3 Dimension 7 Tolerance 4 Temp coetficient Rating wattage Code Wattage Code Wattage Code Wattage 1J 1 16W 2C 1 6W 3A 1W 2A 1 10W 2E 1 4W 3D
55. ELECTRONICS HONG KONG LTD Unit 3712 3724 Level 37 Tower one Metroplaza 223 Hing Fong Road Kwai Fong N T Hong Kong KENWOOD ELECTRONICS TECHNOLOGIES S PTE LTD Sales Marketing Division 1 Ang Mo Kio Street 63 Singapore 569110
56. F amplifier RX front Noise amplifier RX on D601 Voltage clamp D602 603 TX RX switch TK 290 PARTS LIST CAPACITORS CC 45 TH 1H 220 J Color Capacitor value 1 22 23 SA 5 6 ae 010 1pF 2 2 O 22pF 1 Type ceramic electrolytic etc 4 Voltage rating 199 10pF L Multiplier 2 Shape round square ect 5 Value 2 100pF Penner 3 Temp coefficient 6 Tolerance 02 1000pF 0 001 pF Tetun 103 0 01uF Temperature coefficient 1st Word C L P R s T U 2nd Word G H J K L Color Black Red Orange Yellow Green Blue Violet ppm C 30 60 120 250 500 ppm C 0 80 150 220 330 470 750 Example CC45TH 470 60ppm C Tolerance More than 10pF Less than 10pF Code C D G J K M X Z P No code Code B C D F G 96 0 25 0 5 2 ES 10 20 40 80 100 More than 10uF 10 50 pF 0 1 0 25 0 5 1 2 20 20 0 Lessthan 4 7uF 10 75 Voltage rating 2nd word A B C D
57. F of 455kHz Incoming a signals from the antenna are mixed with the local signal from the PLL to produce the first IF of 44 85MHz This is then mixed with the 45 305MHz second local os cillator output to produce the 455kHz second IF This is de tected to give the demodulated signal The transmit signal frequency is generated by the PLL VCO and modulated by the signal from the microphone It is then amplified and sent to the antenna CF300 301 Fig 1 Frequency configuration 3 Receiver System 3 1 Front end RF amplifier The signal are then passed through an antenna matching coil where the high frequency components are amplified by a GaAs FET 0200 The signals are then fed into band pass filter that uses varactor diode tuning to reject unwanted sig nal components and is fed to the 1st mixer 3 2 First mixer The 1st mixer uses the GaAs IC IC200 The 1st mixer mixes the signal with the 1st local oscillator frequency from the VCO and converts it to the 1st IF 44 85MHz The signal then passes through monolithic crystal filter XF301 to remove unnecessary nearby frequency compo nents The signal from the MCF is used as the 1st IF signal 3 3 IF amplifier The 1st IF signal is amplified 0302 and fed into IC300 in the FM IF IC The IF signal is then mixed with the 2nd local oscillator frequency of 45 305MHz to generate the 2nd IF of 455kHz The 455kHz signal is then passed through a ce ramic filter CF300 CF301 W
58. FU 25 243 TC7SH08FU TK11250BM 784214GC0648EU LMC7101BIM5 2SK1824 TC7S66FU Pattern 1 1 Pattern 2 2 Pattern 3 Pattern 4 5 Pattern 5 4 Pattern 6 Foil side AT2408N 10S12 5 TC35453F GN2011 TC7S02F LC75824W 33 32 57 58 10 11 12 13 14 TK 290 gt En UEN 2 TX RX UNIT X57 5390 10 Component side view Foil side OQ d g B mi 3 m W R6 e it I KE R 4 O man Er Ai Sec d KE 1 53 i i 5 R ie 5 ech ra hu Wa CASA 1 ELSA 7 ECKE a TT je is HA LEI D N OV An Se ES E Cal 2p Address Ref No Address Ref No Address Ref No Address Ref No Address Ref No SA7025DK BU4094BCFV MAX856 M62364FP TA7SWOIFU Component side M 62354GP NJ M2904V TC7WO4FU Pattern 1 TC75W51FU Pattern 2 5 Pattern 3 8 Pattern 4 Pattern 5 4 Pattern 6 1 Foil side ale Connect 1 and 6 TA31136FN LC73872M M68776 FEE S l B A SE D EE A F L OR mo P Es ss R Lu T Note Components marked with a dot are parts of pattern 1 SCHEMATIC DIAG RAM TK 290
59. High power adj Low edge down for 2 seconds Side Side 3 Orange For monitoring RF high power Cen High power adj Center Toggle For switching between Wide Narrow Side 2 RF high power Hi High power adj Hi edge Side 2 Frequency MHz EH Side 2 ide 0 450 1000 Low 450 0000 Low Deviation adj Low edge 489 9000 Hi 489 9750 Hi 470 0000 470 0000 470 2000 470 2000 470 4000 Encode tone 470 4000 Decode tone None one OT 67 0Hz OT 67 0Hz OT 250 3Hz OT 25 03Hz DOT 023N DOT 023N None 2 tone 321 7 928 1Hz DTMF 9 DTMF 159 MSK PN pattern one 100Hz square wave one OO CO N MO oo P OO N gt Single tone 1633Hz LCD all lamp mode one Side 2 Deviation balance Side 2 QT deviation Side 2 DOT deviation Side 2 DTMF deviation Side 2 MSK deviation Side 2 Side 2 Side 2 QTDV150 DQDV117 DTDV165 MSDV100 Squelch tight SQ T255 Max deviation Hi Deviation adj Hi edge Side 2 Orange Side 2 Sensitivity Low Sensitivity adj Low edge Side 2 Sensitivity Cen Sensitivity adj Center Side 2 Sensitivity Hi Sensitivity adj Hi edge Side 2 Orange Side 1 HERRER Squelch open sQ 087 Side 2 Battery level IBATI PTT BATT150 Orange Write data y Side 2 END
60. I board Microcomputer output L TX H RX MAND Man Down Man Down mercury switch input port Microphone connector L Switch on Transceiver ANI board H Switch off Emergency Microcomputer Emergency Channel logic Microcomputer out L Emergency operation gt ANI board request H No emergency operatiion request BUSY Channel Busy Microcomputer Busy logic ANI board Microcomputer output L Busy A PA DNE KEY Transmission Transmission start control GE Star gt Control unit Microcomputer input L Transmission request X53 counter gt TX RX unit X57 microcomputer H No transmission request A Board power Switched B Power supply 10 2 Option port 2 For voice scrambler etc Abbreviation PCB Description Check mode operation Scramble Code 1 First of four bits of scramble code Microcomputer output Board code selection Scramble Code 2 Second of four biits of scramble code Logic by binary code Scramble Code 3 Third of four bits of scramble code Scramble Code 4 Fourth of four bits of scramble code Board gt Transceiver Transmitter modulation Connected to the circuit Reference circuit 1kHz 15mVrms gt 2 5 3 5kHz wide 1 25 1 75kHz narrow RX Out Board gt Transceiver Audio amp Connected to the circuit NC No Connection No connection No connection E Ground Ground Ground PTTIO Scramble modulation demodulation control Microcomputer output L TX H RX CLR C AUX Clear Code Specifies whether to scramble M
61. LED 7 5V C442 1000p Q4 25C4988 I z PROTECTION ON 4 2V Es lt SEH See DC SwITCH CURRENT gt AIPE C 9 8 R36 S OFF 0V N TYPO 2sB1132 0 8 Q414 STEERING N E ON 4 2V ETE 2SK1824 Q415 a4 C44 PIETER 9p 9 yl x OFF Ou m 285517 25C4617 S 470p 3 CURRENT DRIVER R428 it pz DC SWITCH VCO SYSTEM L a 0408 0409 8 25C4617 5 25C4617 S DC SWITCH DC SWITCH 0410 4 7k TK11250BM L800 amp 2SC4617 S 0407 8 UNI VERSAL VOLTAGE lt 3 L78 0487 05 I veont anol DC SwITCH sc477 RISAS REGULATOR Ke eC69eL22 CONNECTOR evPAss vou MA25111 C476 x1 Hmon 4c 100p 2 7 V TX RX GND1 GNDZ o a3 28C4619 P Q 5P 7p EXT ANT X53 E 6 2 15 EMERG o 4 TRZA7 47K VOLTAGE REFERENCE 25K 1024 4 5 u Sie R922 gk X cv Fo E XB15A709 DC SWITCH Ee 3 or MI809 c87 a DANZ35E o E o U Ts D408 D9 amp a EXT INT REVERSE
62. Minimum Volume The minimum volume is programmable 0 to 31 The transceiver remains the minimum volume level however the mechanical volume position is set to zero 3 4 Squelch Threshold Level Squelch threshold level value 0 Most loose 15 Most tight 3 5 BCL Busy Channel Lockout Override You can transmit in spite of Busy Channel Lockout situa tion For example To make an emergency voice call To transmit under busy channel lockout situation press PTT once more within approx 500ms after the PTT release 3 6 Selective Call Alert LED You can select whether or not the LED on the transceiver flashes in an orange color when Selective call was occurred 3 7 Battery Warning This transceiver has battery warning feature If the low voltage is detected during transmission the transceiver warns it by flashing red LED Then more low voltage is detected during transmission the transceiver stops transmission and warns it by flashing red LED and beep Please notice standard for the battery exchange charging time by flashing red LED and beep 3 8 Busy LED You can program the enable or disable the busy LED function when a carrier is detected Disable saves battery life 3 9 TX LED You can program the enable or disable the transmission LED function 3 10 2 Digit 7 Segment Display You can use 2 digit 7 segment the display to display the channel number or group number It is useful when
63. N y From LPF INT_ External ANT antenna Internal External antenna switching MSW LSD Fig 6 Microphoen circuit IC603 1 2 19 TK 290 20 CIRCUIT DESCRIPTION 4 5 APC circuit The APC circuit always monitors the current flowing through the RF power amplifier IC801 and keeps a con stant current The voltage drop at R35 R37 and R39 is caused by the current flowing through the RF power ampli fier and this voltage is applied to the differential amplifier IC7 1 2 IC7 2 2 compares the output voltage of IC7 1 2 with the reference voltage from IC3 and the output of IC7 2 2 controls the VGG of the RF power amplifier to make the both voltages to same voltage The change of power high low is carried out by the change of the reference voltage O7 09 and O13 are turned on in transmit and the APC circuit is active See Fig ure 7 5 PLL Frequency Synthesizer The frequency synthesizer consists of the VCXO X1 VCO L800 PLL IC IC5 and buffer amplifiers The VCXO generates 16 8MHz The frequency stability is within 2 0ppm temperature range of 30 to 60 C The frequency tuning and modulation of the VCXO are done to apply a voltage to pin 1 of the VCXO The output of the VCXO is applied to pin 8 of the PLL IC The VCO of TK 290 covers the 38MHz spread setting frequencies in r1 r2 receive and t1 t2 transmit with a bias voltage applied to the V terminal of the VCO A zero
64. NG FEATURES 1 Getting Acquainted SMA male type antenna connector Battery pack release latch 1 1 Key Descriptions D TX Busy Battery low indicator Lights red while transmitting Lights green while receiv ing Flashes red when the battery power is low while transmitting replace or recharge the battery Note This indicator can be disabled by your dealer Power switch Volume control Turn clockwise to switch ON the transceiver Turn coun terclockwise until a click sounds to switch OFF the transceiver Rotate to adjust the volume level Selector Rotate this control to activate its programmable function Page 8 4 Toggle switch Switch the toggle position to activate its programmable function Page 8 Top 1 Top 2 Press these PF programmable function Orange keys to activate their programmable func O Side 1 tions Page 8 O Side 2 PTT Push To Talk switch Press this switch then speak into the microphone to call a station d DTMF keypad keypad models only Press the keys on the telephone keypad to send DTMF tones 2 Universal connector Connect the external speaker microphone optional here Otherwise keep the supplied cover in place 1 2 Display E ill h E j E tf h Si z IER A SCN MON LO OPT AUX SO
65. O 660 O Alphanumeric display Displays the operating group or channel number or the group or channel name When making a DTMF or 2 Tone call the display will alternate between CALL and the channel Also displays various menu functions 7 Segment display Displays the operating group or channel number Also displays tA Talk Around P1 Priority1 P2 Priority2 PP Priority1 and Priority2 or HC Home Channel depend ing on the function being used A Add indicator Appears when a channel is added to the scanning se quence SCN Scan indicator Appears when Scan mode is active MON Monitor indicator Appears when the monitor function is active LO Low indicator Appears when low power is selected OPT indicator Appears when Operator Selectable Tone is enabled 8 AUX Auxiliary indicator Appears when Aux is ON Appears and blinks when the optional scrambler board is enabled Note The alphanumeric and 7 segment displays can be inverted if a PF key or the toggle switch is programmed with Invert Display Page 8 TK 290 OPERATING FEATURES 2 Scan Operating 2 1 Scan Types Single Group Scan You can scan all valid ADD channels in the displayed group that can be selected with the group selector Multiple Group Scan You can scan all valid ADD channels in the all valid ADD group 2 2 Scan Start Condition One or more non priority channels must be added to all channels that can be
66. Programming Write mode for frequency data and signalling etc Mainly used by the person maintaining the user equipment 3 1 Enter to the self programming mode Turn the power switch on with the lead wire with plug PF 8 pin shorted to the E 10 pin lead Figure 5 or delete R491 SELF Figure 6 in the TX RX unit and turn the power switch on while pressing the Side 1 and Side 2 keys Note This mode self programming mode cannot be set when it has been disabled with the FPU e Additional Modification of the Plug It s available to enter the self programming mode by modifying the pattern of lead wire as following Cut the pattern between SSW and GND Lead wire with plug E30 3287 08 2 RED RX AF OUTPUT 3 BLACK RX AF OUTPUT SE 5 WHITE MIC INPUT 6 BROWN MIC GND TUBE 7 BLUE PTT SW GND gt ON 8 YELLOW PF SW Shorted 10 BROWN GND 11 GREEN 5M Fig 5 11 TK 290 REALIGNMENT 3 2 Channel Setting Mode Set data for each channel while in this mode After first entering Self programming mode select the CHAN dis play with Top 1 Top 2 and press PTT to set Channel Set ting mode Once in Channel Setting mode select the group that needs setting with the Top 1 Top 2 keys and press PTT Next select the channel for setting with the Top 1 Top 2 keys and press PTT The setting items and setting data will then appear so reset th
67. R51 R52 R53 R54 R55 1C7 11 K NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO 65 12 K2 B30 2171 05 B30 2171 05 B30 2171 05 B30 2171 05 IMN10 IMN10 IMN10 IMN1O 100 100 o 1k 1k 1k 1k 1k 1k 1k 1k 1k 1k 1k 1k BU4094BCFV TK 290 TK 290 BLOCK DIAGRAM RF X57 539 Ep o F B
68. RANSISTOR 06 28C5110 0 RANSISTOR Q7 DTC114EE DIGITAL TRANSISTOR 08 254988 RANSISTOR Q9 DTA144EE DIGITAL TRANSISTOR DTC144EE DIGITAL TRANSISTOR 2SK1824 FET 3SK274 kJ FET 2SC4617 S RANS 2SK1215 E FET A144EE DIGITAL TRANSISTOR C144EE DIGITAL TRANSISTOR ca RANSISTOR G3N RANSISTOR FET RANSISTOR FET TC144EE DIGITAL TRANSISTOR G3N RANSISTOR A123JE DIGITAL TRANSISTOR 36 EXPLODED VIEW A A N14 0578 04 B N14 0594 04 C M2 6x8BLK N30 2608 45 D M2 6x6 N67 2606 46 E M2x3 N78 2030 46 F M2x3 5 N79 2035 46 G M2x4 N83 2004 46 Parts with the exploded numbers larger than 700 are not supplied TK 290 PACKING C 8 Cap SP MIC 7 Dressing plate B09 0363 03 B03 0594 04 38 Cushion Cap G13 1688 04 13 Instruction manual S 16 Stopper B62 0816 30 CO E D32 0421 24 48 Protection bag a Za H25 0029 04 CA 71 Screw set SS N99 2004 05 57 Belt hook J29 0652 35 Za k 702 Warranty card gt gt 2 47 Packing fixture H12 3018 02 49 Item carton case H52 0998 02 UPC code label Parts with the exploded numbers larger than 700 are not supplied 37 TK 290 DISASSEMBLY FOR REPAIR Disassembly of Front Case and Chassis 1 Remove the 2 screws and a cap fixed screw 8 2 Press the chassis bottom upwards and remove the clips B at the top The
69. RROR message appears on the master side transceiver 7 Pressing the Side 2 key sets clone mode e Note The master transceiver copies only to type matched slave All Clone 1 Press PTT on the master side transceiver to start clon ing of all data except for the transceiver model type and alignment data PTT A Red lamp flashes WN Group Clone To clone the transceiver group data and channel data within the group as well as group alphanumeric data use the Top 1 key or Top 2 key to switch the display on the master side transceiver from A CLONE to G CLONE Top 1 Top 2 A CLONE p G CLONE Press PTT to show the group cloning selection Select the group with the Top 1 or Top 2 keys Press PTT to show the slave side group cloning selec tion Select the group with the Top 1 or Top 2 keys Press the master side PTT to start cloning 4 Red lamp flashes Flow Chart Self programming mode Top 11 Top 21 Clone master mode Side 2 Side 2 Side 2 Side 2 Group clone mode Side 2 Master group selection Side 2 Slave group selection Side 2 All clone mode Side 2 Side 2 Only the keypad model and set to password with the FPU 15 TK 290 16 REALIGNMENT 4 Firmware Programming Mode 4 1 Preface Flash memory is mounted on the TK 290 This allows the TK 290 to be upgraded when new feat
70. TCH E29 1165 05 TER CONNECTOR LCD 72 0402 05 TOGGLE SWITCH E30 3325 05 ING CABLE 5 5 E37 0682 0 CABLE TX RX CONT T07 0349 05 SPEAKER E37 0684 0 D WIRE WITH CONNECTOR SP T91 0575 05 MIC ELEMENT E37 0692 05 CESSED LEAD WIRE TOGGLE SW e E W01 0441 05 UNIVERSAL PLUG KIT E37 0722 05 ENNA CABLE E58 0443 25 IVERSAL CONNECTOR E72 0411 04 AL BLOCK BATT FINAL UNIT X45 3592 71 CC73GCH1H030C CHIP C 3 0PF G01 0891 04 RING BATT RELEASE CC73GCH1H101J CHIP C 100PF G11 2554 04 EY TOP CK73GB1C104K CHIP C 0 10UF G11 2555 04 TOGGLE SW CC73GCH1H101J CHIP C 100PF G11 2658 04 PTT CK73GB1C104K CHIP C 0 10UF G13 1678 04 X RX F10 2344 04 G CASE 133 0763 05 SMALL FIXED INDUCTOR G13 1688 04 CAP G13 1695 04 DTMF M68776 RF POWER MODULE G13 1800 04 BATT TERMINAL G53 0822 04 G CHASSIS G53 0823 04 G SP CONTROL UNIT X53 3930 XX 11 K 12 K2 653 0874 03 RING G53 1511 04 BATT B30 2171 0 LED G53 1518 04 BATT TERMINAL B30 2231 0 LED B30 2019 0 LED H12 3018 02 G FIXTURE H25 0029 04 ECTION BAG P CK73GB1H47 CHIP C H52 0998 02 CARTON CASE CK73FB1C474K CHIP C CK73GB1H102 CHIP C 19 5330 OLDER BATT RELEASE CK73FB1C474 CHIP C 21 8326 JARDWARE FIXTURE SIDE KEY F CHIP C 8328 JARDWARE FIXTURE LCD 8329 JARDWARE FIXTURE CONT UNIT CHIP C 8343 JARDWARE FIXTURE CHIP C J29 0652 3 ELT HOOK ACCESSOR
71. U uoo uono s jy ay UI sjueuJeunseeui exeu O MO S GOW ZHNL 18 INV ugp 6 LOD CH uigp8 0 ugpze e E Z s uuoo q ndul y 0 18S SI AAG ZHAE q VOW sy OV t ZHINO SSL 4H D dINV IN 2 1 S0991 0991 0991 SH f NIVIA SIN SINS SUJJAUJQ SUJJAUJQ 0C SULIAUUG L SUE SUMAUIOGZ SULIAWUGOE SUL AWUGOE SULAUS GL SUMALUQ OZ lt dv gt l U013998S JOPIWSUEJL dS Lol 2 2 099 co9Ol 1189 dNV pr a pri A bebe a ga xi GVNIS gPZL uteigo 01 Dana aNJBA indu JSS eui SMOUS Aejdsip ay 101109ed e9 Buijdnoo 4d0001 e aen uonoes 4Y eui ul AJO ZHAE IN3 ZHAL SULAWES wgpeg ndu INY 4e1euJ J9A9 OV eui 199u SUHAWSZ SUMALUGOS SUMALUOZE SUMAUISTT U09 uonoes 4v eui ui SJUSMSINSEAU aye OL lt iv 2 2 L09291 00295 9001 DOT 0Z1 LOC 8085 WALSAS d Cet a dl W4 INV suJAWwzez WUgPps voL WUgPpo tLL UgPp0 Z0L wgpo zol wgps 86 WaPo LL SUHAUJ 82 waps ell uapozl JV I lt x ZHINS8 Y dl gt lt ZHINO SSL 4H gt UO1 99S 19A1999Y 69 70 Pin No Name 1 0 TERMINAL FUNCTION Function Pin No Function TX RX UNIT X57 5390 10 AN O O Q N gt CH D CHA CHC CHB E VOL 5CM B B SB SB TOGGLE KEY2 06 Q7 CH switch da CH switch da CH switch da CH switch da GND Voltage level input for audio control 5V Power input after passing through the fuse a a a a Power input after passing through the fus
72. VHF FM TRANSCEIVER TK 290 SERVICE MANUAL REVISED KENWOOD O 2001 3 PRINTED IN JAPAN B51 8423 10 N 1023 Antenna KRA 14 Option Knob assy SEL K29 5282 04 Knob assy VOL K29 5283 04 Panel assy A62 0537 53 Knob assy Side key K29 5441 04 o Cabinet assy A02 2139 63 Photo is TK 290 K type Does not come with antenna Antenna is available as an option CONTENTS GENERAL aun yu m GR oia doses ias saus 2 SYSTEM SET UP 0 ssemennnennnnnnnnzznnznnnnzznnznnnnnna 2 OPERATING FEATURES a 3 REALIGNMIENT u 11 CIRCUIT DESCRIPTION eene 17 SEMICONDUCTOR DATA eene 25 DESCRIPTION OF COMPONENTS 26 PARTS LIST ccoo 28 EXPLODED VIEW eere 36 PACKING egi Eee ete 37 DISASSEMBLY FOR REPAIR 38 ADJUSTMENT einer tont 39 PC BOARD VIEWS FINAL UNIT X45 3592 71 50 CONTROL UNIT X53 3930 XX 51 TX RX UNIT X57 5390 10 55 SCHEMATIC DIAGRAM 61 BLOCK DIAGRAM eene 67 LEVEL DIAGRAM renoncer 69 TERMINAL FUNCTION eene 70 KNB 17A Ni Cd BATTERY
73. Y CHIP C J82 0047 0 PC SIDE KEY G CHIP C J82 0049 PC VOL ENC J82 0052 PC UNIVERSAL CONNECTOR FI CHIP C J99 0346 24 ADHESIVE TAPE TOGGLE SW CHIP C E PC K29 5172 32 KEY TOP TOP KEY CHIP C TK 290 CONTROL UNIT X53 3930 XX TX RX UNIT X57 5390 10 PARTS LIST Desti Parts No Description Desti Address Parts No Description I nation nation CK73GB1H10 CC73GCH1H101J CK73GB1H10 CK73GB1H47 CK73GB1H10 F 23 9 B ER DIODE 0 PF UDZ3 9 B ER DIODE OPF IMN10 DE Pl A2S11 DE 0 IMN10 NODO CK73GB1H47 470PF A2S11 CK73GB1H47 470PF N10 0 0 0 0 CK73GB 00 N10 0 0 0 C c0 0c CC73GCH1H OPF J A2811 C92 0602 05 TAN DUF 10WV SS373 E40 5947 05 FLAT CABLE CONNECTOR TDA7053AT POLAR IC E40 5948 05 FLAT CABLE CONNECTOR BU4094BCFV OS IC E40 5662 05 ASSY SOCKET NJM2904V OS IC 01 E40 5920 05 FLAT CABLE CONNECTOR TC7SHO8FU OS IC 501 502 E04 0403 05 SOCKET BU4094BCFV OS IC L92 0141 05 FERRITE CHIP C7WO4FU OS IC L92 0149 05 FERRITE CHIP LC75824W OS IC L92 0138 05 FERRITE CHIP 28C4617 S TRANSISTOR L92 0138 05 FERRITE CHIP 2SB798 DL DK TRANSISTOR 25K1824 FET R90 0723 05 Il COMP RK73GB1J273J R 27K UMC4 TRANSISTOR RK73GB1J102J 1 0K 25K1824 FET RK73GB1J470J 47 RK73GB1J 41K R92 1252 0 OHM TX RX UNIT X5
74. all transceiver data settings Panel Test Mode I This mode is used for making transceiver connection tests and clearing the memory To set Panel test mode turn on the power with Side 2 and PTT are still held down and then first release PTT This mode cannot be set when disabled with the FPU In Panel test mode when channel or signalling is se lected the signalling that was most recently used is dis Panel tuning mode Press Side 1 in Panel test mode to set Panel tuning mode layed nes Channel Signalling Note Different sample displays are shown Function name Display Remarks Varicap shift voltage Mid JVSWM 73 VCO 3V adj Side 2 Varicap shift voltage High VSWH145 VCO 6V adj Side 2 Voltage change frequency Low Mid 464 000 VCO 3V shift RX frequency Side 2 Key operations In Panel test mode are as follows Voltage change frequency Low Mid 464 000 VCO 3V shift TX frequency Selector switch Use to select the test channel Side 2 PTT For transmit Voltage change frequency Mid High 479 000 VCO 6V shift RX frequency Top 1 For down signalling Side 2 Top 2 For up signalling Voltage change frequency Mid High 479 000 VCO 6V shift TX frequency Side 1 For setting Panel tuning mode nd 140 j Side 2 For switching power between Hi Low A AAA l ide Orangel Enter the LCD all lamp mode if held RF high power POW 100 RF high power Low
75. as an option so buy a commercially available one Note When the antenna connector adapter touches the knob draw out the knob to mount the connector 2 Universal connector Use the interface cable KPG 36 for PC tuning or the lead wire with plug E30 3287 08 and screw N08 0535 08 for panel tuning Connect the plug to the universal connector of the radio and tighten the screw The lead wire with plug E30 3287 08 and screw NO8 0535 08 terminals are as follows Numbers are universal connector terminal numbers 50kHz to 600MHz 35MHz 100mV or more Caution 1 When connecting the plug to the universal connector of the radio a short circuit may occur To provent this be sure to turn the radio POWER switch off 2 Since the RX AF output is a BTL output there is a DC component Isolate this with a capacitor or transformer as shown in the figure 3 Do not connct an instrument between red or black and GND Universal connector Universal connector O EXT INT RF SW IQ SSW 2 SP 4 MSW A PTT CER E NC SP aie 11 EM ot 12 TXD 13 RXD ESI a NC 39 TK 290 40 ADJUSTMENT Panel tuning RED RX AF OUTPUT BLACK RX AF OUTPUT WHITE MIC INPUT BROWN MIC GND 7 BLUE PTT SW GND gt ON 8 YELLOW PF SW 5 10 BROWN GND 11 GREEN 5M I To Radio
76. ass filter the ALC cir cuit the low pass filter the high pass filter and pre empha sis IDC circuit in IC607 When encoding DTMF mute switch 0601 is turned off for muting the microphone input signal The signal passes through the D A converter IC603 for the maximum deviation adjustment and enters the sum ming amplifier consisting of IC605 1 2 and is mixed with the low speed data from the CPU 1C406 The output signal from the summing amplifier goes to the VCO modulation input The other output signal from the summing amplifier passes through the D A converter IC603 again for the BAL adjustment and the buffer amplifier IC604 1 2 and goes to the VCXO modulation input 4 2 Noise cancelling microphone circuit The two signals from INT MIC Main amp Sub are input to the positive input Sub and to the negative input Main of the IC3 If the same signal is input to both Main and Sub the Main signal is canceled at the output of IC3 pin 7 In other words noise from nearby sources not directly connected to the transceiver enters the Main and Sub in puts at the same signal and is therefore canceled out When a signal is only input to Main and there is no signal at Sub the Main signal is output as is from IC3 pin 7 In other words only the voice audio of the operator in ex tremely close proximity to the Main MIC is input to Main so that the signal is output as is from IC3 pin 7 Also when the N C switch
77. can be selected when the scrambler board has not been installed 2 This function can be selected when the ANI board has been in stalled 3 This function can be selected when the scrambler board has been installed Note If Shift is pregrammed onto one of the PF keys or the toggle switch the remaining PF kevs can be programmed with two different functions If Shift is programmed onto a PF key and the toggle switch an error will occur and the function will not operate Fig 2 Programmable functions TK 290 OPERATING FEATURES 6 7 Group Down If this key is pressed once the group number decreases by one step If this key holds down for 500ms approxi mate the group number decreases continuously This key works as the squelch level adjuster in squelch level adjust mode This key works as the OST operator se lectable tone number selector in the OST mode This key works as the SCR voice scrambler code selector in the voice scrambler code select mode 6 8 Group Up If this key is pressed once the group number increases by one step lf this key holds down for 500ms approxi mate the group number increases continuously This key works as the squelch level adjuster in the squelch level adjust mode This key works as the OST op erator selectable tone number selector in the OST mode This key works as the SCR voice scrambler code selector in the voice scrambler code select mode 6 9 Home Channel Press thi
78. ds down for 500ms approxi mate channel number increases continuously This key works as the squelch level adjuster in squelch level adjust mode This key works as the OST operator se lectable tone number selector in the OST mode This key works as the SCR voice scrambler code selector in the voice scrambler code select mode 6 5 Channel Name This key switches the LCD display between the group channel number and the group channel name 6 6 Delete Add This key switches the currently displayed channel be tween Delete and Add The Add channel contained in the scan sequence and Delete channel is not contained In the scan mode this key switches the channel delete or add temporarily Toggle Speaker Function Name Selector Switch Microphone PF Keys Aux 4 Channel Down Channel Name Channel Select Channel Up Delete Add Emergency Call Group Down Group Scan Group Select Group Up Home Channel Invert Display Key Lock Lamp Low Power Monitor Monitor Momentary No Function SNISISISI SISI SISI SIS SISISISISISIJISJIJSISNIJN Operator Selectable Tone Operator Selectable Prioritv 1 Operator Selectable Prioritv 2 Scan Scrambler Shift SP Attenuation Squelch Level Squelch OFF Squelch Momentarv Talk Around 1 This function
79. e Power output after power switch Power output after power switch Normally 5V switched toggle when connected GND Key input Key scan IC 06 signal output Key scan IC 07 signal output Chip select output for LCD driver Clock data output for LCD driver Data output for LCD driver Backlight LED control ormally OV Lighting 7 5V TX LED control ormally OV Lighting 7 5V Busy LED control ormally OV Lighting 7 5V 5V 26 27 28 29 30 31 BTL input for external speaker BTL input for external speaker Audio mute signal output For optional board For optional board Backlight LED control Normally OV Lighting 7 5V Key scan IC O7 signal input Key scan IC 06 signal input N a Audio GND AUdio GND DJ Oo Ol Q N EXT INT speaker switch input BTL output for external speaker BTL output for external speaker EXT INT MIC switch input External microphone input External microphone GND External PTT input Programmable function key input Not use GND 5V Serial data output Serial data input Not use UNIT X53 3930 XX A 6 For optional board See page 22 For optional board See page 22 Audio AMP control switch output External speaker switch control Internal speaker switch control Key scan IC reset output Key scan IC clock data output Not use Key input
80. e alert Wait time of the alert tone when the internal Man Down port becomes active to enter the emergency mode After an alarm sounds the transceiver waits for the programmed wait time then enter the emergency mode Emergency Channel Display Setting for the display in the emergency mode The transceiver can be programmed to display EMER GENCY channel name when it is in emergency mode If you set to off by KPG 38D the transceiver shows se lected group channel status before entering to the emer gency mode however the transceiver is in an emergency mode Emergency Mode Type Speaker mute on or off in the emergency mode Emergency Type Select an Emergency code format from DTMF MSK ANI board or OFF Disabled Emergency DTMF ID The Fleet number when you select DTMF in the emer gency type Emergency Call Fleet The emergency fleet number when you select MSK in the emergency type Emergency Call ID The emergency DTMF ID code when you select MSK in the above emergency type 3 19 Radio Password Keypad Model Only The radio password prevent unauthorized users opera tion Every time the power on transceiver is locked and unusable until entering correct password Enter pre programmed password by FPU and key causes the transceiver unlocked 3 20 Data Password The data password prevents unauthorized reading of the programmed transceiver data by FPU Enter pre pro grammed password in FPU reading pr
81. e data with the Top 1 Top 2 keys and press PTT When finished the display shifts to the next setting item After finished setting all items press PTT to return to Group selection Changes in the frequency CH steps and the OT DOT steps can be made in Side 1 Se X57 5390 10 Component side Function name Display Remarks Select 1 1 during 1 160 160 1 Group Channel group selection 1 1 during Fig 6 channel selection RX frequency R150 0125 Receive frequency When enter the self programming mode FUNC ap RX signalling RX 023N Receive OT DOT pears after SEL is displayed for half a second Dot on right edge is Selecting any of Channel setting Group setting Function lit up during 1 step setting or Clone master with the Top 1 Top 2 keys and changes then pressing PTT sets the Setting mode for that time TX frequency T150 0125 Transmit frequency Key operations in Self programming mode are as follows 4 TX signalling TX 250 3 Transmit GT DGIT Dot on right edge is Selector switch Not used liap during step PTT Functions as a RUN or Execute key Top 1 Use as a Down key changes Top 2 Use as an Up key Option signalling 2ToneA OFF DTMF 2Tonea Side 1 Use for select channel steps in Chan 2ToneB 2ToneC nel setting mode or switching for DEL ADD D A ADD Delete Add OT DOT Wide Narrow WIDE Wide Narrow Side 2 Use as a cancel
82. eaker BTL output for internal speaker CONTROL UNIT X53 3930 XX B 6 E TOGGLE KI2 06 Q7 CE CL DI GND Normally 5V switched toggle when connected GND Key output Key scan IC O6 signal input Key scan IC O7 signal input Chip select input for LCD driver Clock data input for LCD driver Data input for LCD driver Backlight LED control ormally OV Lighting 7 5V TX LED control ormally OV Lighting 7 5V Busy LED control ormally OV Lighting 7 5V 5V KNB 17A External View KNB 17A Circuit Diagram Discharge pin side Breaker Breaker 70 5 C 80 5 C too III Diod oe Thermister Charge pin side KNB 17A Specifications Voltage ease ee 7 2N 1 2V x 6 Charging current 1500mAh Dimensions MM ssssssssesei1ae 58 0 W x 110 8 H x 20 0 D Projections included Charger and charging time KSC 19 Normal Charger Approx 8 hours KSC 20 Rapid charger Approx 1 3 hour W alght sa ttes 220g 71 TK 290 KIVIC 25 26 SPEAKER MICROPHONE KMC 25 External View KMC 26 External View Note Stubby antenna are options KMC 25 26 Specifications Microphone B09 0382 08 Cap Phone Impedance 2kQ Sensitivity et 65dB 4 0dB at 1kHz D10 0629 08 kever PTT Speaker E04 0415 08 RF coaxial receptacle Impedance E ELT SE 160 E30 3287 08 Lead wire with plug assy PUE datada 0
83. el input P64 RD P65 WR Flash ROM access port PLL unlock detect input P66 WAIT TX Inhibit Radio kill SQL level input P67 ASTB Open RSSI level input VDD 5V GND P100 T15 EEPROM clock 130 ANO0 LSD OT DOT output P101 TI6 EEPROM data P P P P P P1 P1 P1 A P P 131 ANO1 DTMF BEEP output P102 TI7 Common clock AVREF1 P70 RXD2 SI2 5V Battery DET SW P103 TI8 P30 TOO Common data Shift register output enable P71 TXD2 SO2 EXT SP install check No H P31 TO1 Key counter return 1 P72 ASCK2 SCK2 on connect P32 TO2 Key counter return 2 P20 RXD1 SI1 e PPL P33 TI1 Self program flag Soft pull up P21 TXD1 SO1 FPU P34 T12 Key counter enable P22 ASCK1 SCK1 odem STB P35 TIOO 2 tone decode latch P23 PCL DTMF clock P36 TIO1 Digital SOL P24 BUZ DTMF decoder S P37 PLL LE P25 SIO P26 SO0 LCD CS Shift register 1 STB TEST GND P90 P93 Rotary SW 1 4 P27 SCKO Shift register 2 STB P94 Toggle SW input P80 A0 P81 A1 Flash ROM access port P95 Modem RDT RX DATA TK 290 SEMICONDUCTOR DATA DESCRIPTION OF COMPONENTS 2 RF Power Amplifier Final Unit IC801 M68776 2 1 Block diagram ple dur Rating 2 2 Maximum ratings
84. fied se cure and any open connectors are properly terminated SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere This equipment should be serviced by a qualified techni cian only SERVICE This radio is designed for easy servicing Refer to the schematic diagrams printed circuit board views and align ment procedures contained within NOTE WE CANNOT guarantee oscillator stability when using channel element manufactured by other than KENWOOD or its authorized agents FCC COMPLIANCE AND TYPE NUMBERS Model TK 290 Type acceptance number Frequency range ALH21893110 136 174MHz Compliance Parts 22 74 80 90 X45 359X XX Frequency range Remarks destination 0 11 0 10 2 71 TK 290 JK v 136 174MHz 1st IF 44 85MHz K2 Y SYSTEM SET UP Merchandise received License and frequency allocated by FCC Choose the type of transceiver Transceiver programming Are you using the optional antenna NO Are you using the speaker microphone Y 136 174MHz LOC 45 305MHz TX RX 136 174 sw TK290 KK2 A personal computer IBM PC or compatible programming interface KPG 36 and programming software KPG 38D are required for programming The frequency and signalling data are programmed for the transceiver KRA 14 Helical antenna Option With antenna TK 290 OPERATI
85. hours KSC 20 External View KRA 14 External View M 148 162MHz M2 162 174MHz M3 136 150MHz iO KSC 20 Specifications Charging current 1100mA 150mA Charging time KNB 17A 80 min 24 Source voltage naa Approx 15V Ambient temperature 0 C 40 C DIMENSION Six st tren aa 105 W x 135 D x 52 H mm Weight zu Eee aan 0 18kg 73 SPECIFICATIONS GENERAL Frequency Range nn 136 to 174MHz Number of Channels ss assssiinseiineeerirrerrine ree 160 channels Channel Spa ina pe cere enin niie ai ee Wide 25kHz 30kHz Narrow 12 5kHz 25kHz PLL channel step 5kHz 6 25kHz 7 5kHz Battery Voltage ie 7 5V DC 20 Batey a net rol 10 hours at 5W 5 5 90 duty cycle Temperature Range 30 C to 60 C 22 F to 140 F Dimensions and Weight 6 3 32 155mm H x 2 5 16 58mm W x 1 1 2 38mm D 1 25 Ibs 565g With Keypad Model 6 3 32 155mm H x 2 5 16 58mm W x 1 9 16 39 5mm D RECEIVER Measurements made per ElA standard ElA 603 Sensitivity EIA T2dB SINAD s x tectae as 0 25uV 20dB Quietirig siii a 0 35uV AA A E Wide 75dB Narrow 70dB Intermodulation a 2 mine o a Wide 75dB Narrow 68dB Spurious and Image Rejection 75dB Audio Power Oumut ayay ushay 500mW at less than 3 distortion Frequency Stability a r a s 0 00025 from 30 C to 60 C Chan
86. icrocomputer output L Scramble H Normal RXAEN Enables the power save mode of the board Microcomputer output L Power save mode H Normal Transceiver Receiver detection output Connected to the circuit Reference Board 1kHz STD Dev gt 250 350mVrms TXIN TX In Transceiver Microphone circuit gt Board Connected to the circuit V Board power supply Switched B Power supply SEMICONDUCTOR DATA 1 Microprocessor 784214GC0648EU TX RX Unit IC406 1 1 Terminal function Port name Function Port name TK 290 Function 120 RTPO odem FCLR P82 A2 121 RTP1 B control D A converter CS P83 A3 P84 A4 odem MSKE MSK enable P85 A5 odem DIN DATA TX DATA P86 A6 odel select 1 P87 A7 odel select 2 P40 ADO O J O OI WwW N gt O O_ O O O O ock shift P41 AD1 5V P42 AD2 X tal 12 0MHz P43 AD3 P44 AD4 D P45 AD5 P46 AD6 D P47 AD7 G Open G G PU reset P50 A8 TPO Il com stop P51 A9 P1 odem TRD TX clock TP2 NMI odem RTM RX clock P3 DTMF decode STD Key interrupt Power switch detect MIC PTT Flash ROM access port 5V GND 5V Volume level input Flash ROM access port SP key 1 2 Flash ROM 4M bit access port Temp Open OT DOT input Battery lev
87. icroproces sor becomes Low in the standby and Q5 O6 which are power supply circuit for IC1 turn off When the audio is out put AMP SW becomes High to turn O5 O6 on and voltage is supplied to power terminal VP of IC1 Speaker switching is done from IC403 TX RX unit by INT AFC or EXT AFC First the logic level at the speakers switching terminal SSW on the universal connector is input to the microprocessor IC406 TX RX unit The microproces sor then outputs data to IC403 based on this input When there is no SP MIC installed this logic level is high When the INT AFC is high the EXT AFC goes low so the AF signal is only input to the amplifier for the internal speaker INT SP of IC1 However when a SP MIC has been in stalled this logic level is low so the INT AFC goes low and the EXT AFC goes high So that the AF signal is input only to amplifier for the external speaker EXT SP of IC1 X300 2nd local OSC EXT AFC SB L Narrow IC601 2 2 AMPSW Can AF AMP C 08 Q7 AF 1 sil INT AFC Cen 2 1 1C604 2 2 1C603 AF AMP 18 Fig 3 Wide Narrow changeover circuit 3 5 Audio amplifier circuit e TX RX unit The demodulated signal from IC300 goes through IC301 and is amplified by 1C601 2 2 high pass filtered low pass filtered high pass filtered band eliminate filtered and de emphasized by IC607 The signal then goes through an electronic
88. ide CF302 CF303 Narrow and fed back into IC300 for additional amplification IC200 D602 L201 0200 L202 L205 L206 BPF_ RFAMP BPF BPF BPr TstMIX D603 N HSH Hi Z 2 15 MCF 0302 XF301 IF AMP CF300 301 Wide CF302 303 Narrow Fig 2 Receiver section Item Rating 44 85MHz 5 7kHz at 3dB 25kHz or less at 30dB OdB or less 4dB or less 80dB or more at fot910kHz 40dB or more within fot 1MHz 350Q 4 5pF Nominal center frequency Pass band width Attenuation band width Ripple Insertion loss Guaranteed attenuation Terminating impedance Table 1 Crystal filter XF301 L71 0588 05 17 TK 290 CIRCUIT DESCRIPTION 3 4 Wide Narrow changeover circuit Narrow and Wide settings can be made for each channel by switching the ceramic filters CF300 CF301 Wide CF302 CF303 Narrow The WIDE high level and NARROW low level data is output from 1C400 I O port expansion pin 4 When a WIDE high level data is received Q303 turn off and 0304 turn on When a NARROW low level data is re ceived 0303 turn on and 0304 turn off D302 D303 are switched to ceramic filters when a high low level data is re ceived 0305 turns on off with the Wide Narrow data and the IC300 detector output level is changed to maintain a con stant output level during wide or narrow signals 5R W N H Wide Control unit The audio mute signal AMP SW from the m
89. iew 2 E 6 TOP2 TOP1 To 6 3 S 4 TOGGLE SW D102 5 D103 3K D104 6 7 8 9 10 11 J 72 0705 22 A 6 12 Component side Pattern 1 Pattern 2 13 Pattern 3 Pattern 4 Foil side 14 51 52 Connect 1 and 4 CONTROL UNIT X53 3930 XX 11 K 12 K2 Foi LN L t t e eieiei as lec ec la Component side Pattern 1 Pattern 2 Pattern 3 Pattern 4 13 Foil side 53 9 Connect 1 and 4 54 A B C D E F K L M N e P Q S TX RX UNIT X57 5390 10 C
90. ion The receiver circuit is repeated on and off to conserve the battery life 4 7 Signalling Signalling AND OR sets the audio unmute condition for any channel programmed with the option signalling 2 Tone DTMF AND AND requires both the valid option signalling and the programmed OT DOT to be received for audio to unmute and initiate an option signalling decode alert OR OR requires either the valid option signalling or the programmed QT DOT to be received for audio to unmute an option signalling decode alert is only initiated if the proper option signalling is decoded 5 Channel Features You can use these features using the programming soft ware KPG 38D 5 1 Option Signalling The transceiver is programmable to the option signalling 2 Tone decode program 1 2 Tone decode program 2 2 Tone decode program 3 DTMF decode to each channel It is useful to receive an individual call Receive format is selectable AND or OR with OT DOT for each group The radio response of option signalling is programmable Call Alert tone or Transpond for each option signalling 2 Tone decode program 1 2 Tone decode program 2 2 Tone decode program 3 DTMF 5 2 PTT ID PTT ID provides a DTMF ANI MSK ANI or ANI board ID if installed to be sent with every time PTT connect ID at be ginning of transmission disconnect ID at end of transmis sion or both You can program PTT ID on or off for each channel
91. isconnect ID Disconnect ID is send on end of trans mission Both Connect ID is send on beginning of transmission and disconnect ID is send on end of transmission Off Sending ID function is disabled There is also PTT ID setting for each channel Refer PTT ID of channel feature When you use an ID code for ANI board the ID code and transmitting timing are configured to the optional ANI board 3 17 OST Operator Selectable Tone The transceiver is capable to have OST function and 16 tone pair OT DOT with max 7 digit name for each tone pair OST Back Up The transceiver is programmable the selected OST code is memorized or not If you set to Disable no memo rized the OST function always starts at off Direct OST It is possible to call OST number directory using key pad In this case keypad is used for OST then DTMF Auto PTT DTMF Auto Dial functions by keypad are not usable 3 18 Emergency Active Time Automatic transmission period in the emergency mode Interval Time Interval time between the automatic transmissions e Duration of Locator Tone 1 Duration of an alert tone before the automatic transmis sion is performed Duration of Locator Tone 2 Duration of an alert tone after the automatic transmission is performed e Man Down Delay Time Delay time of entering the emergency mode when the internal Man Down port becomes active e Man Down Pr
92. lity due to noise during transmission Pin 41 Expander output pin The TK 290 compander can be turned on or off only when modulation is set to Narrow by FPU setting The compander cannot be turned on when modulation is set to Wide OFF ka Compressor Transmission path Expander 0 Signal 20 AN AA AN 20 40 40 a Y Noise V l t Output nps 40dB S N PU MPA 60 60 Y 80 80 100 100 Modulator Demodulator Input Compressor and and Expander Output Transmitter Receiver Fig 17 TAI 60dB S N 10 Option Board Terminal Terminals for mounting the option board are provided at the bottom of the TX RX unit The table below shows the correspondence between the board and terminals Discon nect R414 and R665 in TX RX unit when the scrambler board X57 540X XX is attached Component side Connect the option board to the connection terminals of the TX RX unit DATI CODE4 i l I I I DATO CODE3 TCNT CODE2 I I STONE CODE1 I AUDIH TXOUT E RXOUT I I MUTE NC i SCALL E I I i I l I l I i I I I I l I l I I
93. mmeter BATT terminal voltage 7 5V Select POW 255 in panel tuning mode PTT ON TX high 1 Set panel test mode 0 1W power CH No 3 2 3A or less adjustment Signalling No 1 Select POW sk sk sk in tuning mode Push Orange to 3 point adjustment mode Select POW sk ak sk L PTT ON 2 Push Side2 to select POW ck M PTT ON 3 Push Side2 to select POW eae H PTT ON Condition TK 290 ADJUSTMENT Measurement Adjustment Specifications Remarks PE Am Unit Terminal Parts Method 1 Set panel test mode CH No 1 Signalling No 1 PTT ON 2 CH No 2 Signalling No 1 PTT ON 3 CH No 3 Signalling No 1 PTT ON TX low power adjustment 1 Set panel test mode CH No 3 Signalling No 1 Select POW ak sk LO PTT ON 1 Set panel test mode CH No 1 Signalling No 1 Set low power Push Side2 PTT ON 2 CH No 2 Signalling No 1 Set low power Push Side2 PTT ON 3 CH No 3 Signalling No 1 Set low power Push Side2 PTT ON Power meter Panel ANT Check 3 7W 5 2W 2 3A or less Ammeter 0 1W 1 2A or less 0 5W 1 5W 1 24 or less 7 DOT balance adjustment 1 Set panel test mode CH No 3 Signalling No 1 Select BLNC sk gt sk in panel tuning mode Deviation meter filter setting LPF 3kHz HPF OFF PTT ON Power meter Panel 1 Make the demodu
94. ndard Signal Generator SSG Frequency Range Modulation Output Maximum 600MHz or more Frequency modulation and external modulation 133dBm 0 05uV to 7dBm 501mV Power Meter Input Impedance Operation Frequency Measurement Range 500 Up to 600MHz Full scale of 10W or so Deviation Meter Frequency Range 100 to 200MHz Digital Volt Meter DVM Measuring Range Accuracy FS 18V or so High input impedance for minimum circuit loading Oscilloscope DC through 30MHz High Sensitivity Frequency Counter Frequency Range Frequency Stability Up to 1GHz or so 0 2ppm or less Ammeter 5A AF Volt Meter AF VIVM Frequency Range Voltage Range 50Hz to 1MHz 1mV to 10V Audio Generator AG Frequency Range Output 100Hz to 100kHz or more Oto 1V Distortion Meter Capability Input Level 396 or less at 1kHz 50mvV to 10Vrms 160 Dummy Load Approx 160 5W Regulated Power Supply 5V to 10V approx 5A Useful if ammeter equipped Spectrum Analyzer Measuring Range DC to 1GHz or more Tracking Generator Center Frequency Frequency Deviation Output Voltage E The following parts are required for adjustment 1 Antenna connector adapter The antenna connector of this radio uses an SMA termi nal Use an antenna connector adapter SMA f BNC f or SMA f N f for adjustment The adapter is not provided
95. nel Frequency Spread ssssuuss 38MHz TRANSMITTER Measurements made per EIA standard EIA 603 RF Power Output Hi BW Low 1W Spurious and Harmonies 70dB Type OL ErmiSSIOD eret ut b Gott pasas F3E 5kHz for 100 at 1000Hz EMUNGIS curar en i base oa Wide 45dB Narrow 40dB Audio Distortion Lee Less than 3 0 at 1000Hz Frequency Stability ree 0 00025 from 30 C to 60 C Channel Frequency Spread sssiisesiieeseeineei 38MHz KENWOOD CORPORATION 14 6 Dogenzaka 1 chome Shibuya ku Tokyo 150 8501 Japan KENWOOD SERVICE CORPORATION P O BOX 22745 2201 East Dominguez Street Long Beach CA 90801 5745 U S A KENWOOD ELECTRONICS CANADA INC 6070 Kestrel Road Mississauga Ontario Canada L5T 158 KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembr cker Str 15 63150 Heusenstamm Germany KENWOOD ELECTRONICS BELGIUM N V Mechelsesteenweg 418 B 1930 Zaventem Belgium KENWOOD ELECTRONICS FRANCE S A 13 Boulevard Ney 75018 Paris France KENWOOD ELECTRONICS U K LIMITED KENWOOD House Dwight Road Watford Herts WD1 8EB United Kingdom KENWOOD ELECTRONICS EUROPE B V Amsterdamseweg 37 1422 AC Uithoorn The Netherlands KENWOOD ELECTRONICS ITALIA S p A Via G Sirtori 7 9 20129 Milano Italy KENWOOD IBERICA S A Bolivia 239 08020 Barcelona Spain KENWOOD ELECTRONICS AUSTRALIA PTY LTD A C N 001 499 074 16 Giffnock Avenue Centrecourt Estate North Ryde N S W 2113 Australia KENWOOD
96. o the call however revert channel is set to priority channel 1 After resume time scan re starts and transmission chan nel is return to priority channel 1 Priority 2 The transceiver reverts to the priority channel 2 Priority 2 with talkback The transceiver reverts to the priority channel 2 If you press PTT during resume timer dropout delay time TX dwell time or calling you can transmit on cur rent channel to answer to the call however revert channel is set to priority channel 2 After resume time scan re starts and transmission chan nel is return to priority channel 2 Selected channel The transceiver reverts to the channel before scanning or the channel that you changed during scan 6 Last called channel The transceiver reverts to the last called channel during the scan 7 Last used channel The transceiver reverts to the last used transmitted channel during scan Last used revert channel in cludes talkback function 8 Selected with talkback The transceiver reverts to the channel before scanning or the channel that you changed during scan 2 e gi 2 8 Scan End When you reactivate the key or the toggle switch to left position programmed to the scan function during scan mode the scan ends The scan icon SCN and SCAN or revert channel pro grammable display goes off TK 290 OPERATING FEATURES 2 9 Temporarily Delete Add It is possible to delete or add channel temporarily during
97. ocess This password also protects the clone Enter pre programmed password by FPU and key to clone TK 290 OPERATING FEATURES 4 Group Features You can use these features using the programming soft ware KPG 38D 4 1 TOT Time Out Timer The transceiver has the TOT This parameter selects the period of time users can continuously transmit When the selected period passes the transceiver gener ates an warning tone and stops the transmission 4 2 TOT Pre Alert The transceiver has TOT pre alert timer This param eter selects the time at which the transceiver generates TOT pre alert tone before TOT is expired TOT will be expired when the selected time passes from a TOT pre alert tone 4 3 TOT Re Key Time The transceiver has TOT re key timer This timer is the time you can not transmit after TOT exceeded After TOT re key time expired you can transmit again 4 4 TOT Reset Time The transceiver has TOT reset timer This timer is the minimum wait time allowed during a transmission that will reset the TOT count TOT reset time causes the TOT to continue even after PTT is released unless the TOT reset timer has ex pired 4 5 Group Delete Add The transceiver can set the delete add in each group If Delete is selected the transceiver does not scan the de leted group in multi group scan 4 6 Battery Save This is the automatic battery saver during a standby mode operat
98. omponent side view CU o ao C469 Ee RACIAL MSN NQ E L ae TE3 dao ra DATO mel 1 33 c49 R36 5 PlojfRsoj c Q8 C464 E inr Y zo R49 xllo m STONE ei Ze Ra L o B EE E R67 5 n E R408 El R65 T R478 C461 1 6 20 C62 ie SEO asi os isole pras Se E SCALL LEIET Cem E z Sie O T 3 ze El IRA14 C656 g caa 81 9 S alg E ge KEY a o jie fa ara ROSE r d ASLI RE 3 m B EE EE Losa E ol 18 e 1610655 Vcont N S a 3 E Sg amp j Pi g S ces2 Ee Mo E amp E Em g CAME o g ek gis ale E rosa Vec DAT Enn a E BI WA l C602 iceos iRe1e Resi C E m i ES 2 O Q ena E alo Er 2 alo OS 85 pen PILLAI be ibu aj a 8 9 SS LI Sem car R476 Te2 JS ma Karta C31 Q R658 CH B B Q ZE Ska D402 CHA m r Q E ps IC607 Ollo Res r m PIS AN 3 H QI z E mie Sy de w PAA a SES 2 81 OO C15 2 E 9 als amp 670 5 e EEC Ze El ics 34 RE a TUTTI Ta e e 8 E 851 S 45 iF We BIZ 9 C634 m R62 a ki HE SE R622 3 IC633J R625 IC632 e C400 O C14 C23 R622 e N ei 608 a R624 Olalla D403 R40 El lo C606 Re14 2 13 12 VISI SIR WE RXD 7 C229 C423 S 8 R609 ala ES OUT O E H QA 8 e C665 pi pe l ue SS R666 S PET E ei O UJ a S SJ E Co JISTA Uer ke al pes SEN Sa eet L E ar Res sss SISIE R605 IC606 C631 es ae E E S R669 E a
99. pin 34 of the CPU The signal passes through a low pass CR filter and goes to the summing amplifier IC605 1 2 The signal is mixed with the audio signal and goes to the VCO IC10 and VCXO X1 modulation input after passing through the D A converter IC603 for BAL adjustment High speed data DTMF High speed data is output from pin 35 of the CPU The signal passes through a low pass filter consisting of IC413 and provides a TX DTMF tone and a RX DTMF tone including a beep tone The TX DTMF tone is passed to the D A con vertor IC603 for DTMF deviation adjustment and then ap plied to the audio processor IC607 The signal is mixed with the audio signal and goes to the VCO and VCXO The RX DTMF tone is passed the D A con vertor IC603 for audio control summing amplifier IC604 2 2 audio power amplifier and then to the speaker e MSK The MSK signal 1200 bps is output from pin 6 of IC607 The signal passes through the D A converter IC603 for the MSK deviation adjustment and is routed to the VCO When encoding MSK the microphone input signal is muted RX AUDIO R422 R421 Fig 15 Encode 8 2 Decode Low speed data OT DOT The demodulated signal from the FM IF IC IC300 is am plified by IC601 2 2 and passes through a low pass filter IC602 to remove audio components The signal is input to pin 28 of the CPU The CPU digitizes this signal performs processing such as DC restoration and decodes
100. r setting LPF 15kHz HPF OFF PTT ON Power meter Panel ANT Deviation meter Oscilloscope AG Universal AF VIVM Top1 Top2 0 75kHz 0 05kHz 0 375kHz 0 05kHz 0 75kHz 0 05kHz 0 375kHz 0 05kHz TK 290 ADJUSTMENT Measurement Adjustment Item Condition z Specifications Remarks RU mo Unit Terminal Parts Method p 16 DIMF 1 Set panel tuning mode Power meter Panel ANT Top1 1 5kHz 50Hz deviation CH No 3 Deviation Top2 adjustment Signalling No 1 meter narrow Select DTDV sk sk gt Oscilloscope in panel tuning mode Turn the toggle SW to the AG Universal right narrow AF VIVM Deviation meter filter setting LPF 15kHz HPF OFF PTT ON 17 MSK 1 Set panel test mode 3 00kHz deviation CH No 3 adjustment Signalling No 1 wide Select MSDV k sk sk in panel tuning mode Deviation meter filter setting LPF 15kHz HPF OFF PTT ON 18 MSK 1 Set panel tuning mode 1 50kHz deviation CH No 3 adjustment Signalling No 1 narrow Select MSDV sk sk in panel tuning mode Turn the toggle SW to the right narrow Deviation meter filter setting LPF 15kHz HPF OFF PTT ON 19 Transmission 1 Set panel test mode 42dB or more S N check CH No 3 wide Signalling No 1 Deviation meter filter setting LPF 300Hz HPF 3kHz De emphasis 750us PTT ON 20 Transmission 1
101. rolling squelch on off by the pulse signal input from the squelch circuit 5 Controlling the audio mute circuit by decode data input 6 Transmitting encode data OT DOT 7 Sending serial data to output expander 10400 1C403 IC404 and IC405 to control various function in the unit 7 1 Memory circuit IC414 is a flash memory with a capacity of 2M bits that contains the transceiver control program for the CPU and data such as transceiver channels and operating features This program can be easily written from an external de vices Data such as DTMF memories and operating status are programmed into the EEPROM IC412 IC406 IC412 EEPROM IC415 ADDRESS DECODE IC414 Fig 12 Memory circuit 7 2 CPU clock shift When the CPU IC406 12MHz clock X400 high fre quency is multiplexed with the reception frequency it be comes an internal beat signal suppressing the signal sensi tivity To prevent this by turning 0407 on the clock fre quency is shifted about 4kHz Shift on off can be set through programming C448 Fig 13 CPU clock frequency shift 7 3 Shift register IC400 403 404 and 405 is an interface IC for output port expansion lt is used to expand the CPU IC406 output ports 7 4 D A converter IC3 and IC603 is used as a conventional semi fixed resis tor converter It sets the following 1 RX sensitivity 2 Transmission power Modulation level Audio power Frequency 3 4 5
102. s for Toggle switch are listed page 8 Fig 2 Right position is active for programmed function on toggle switch except group select The functions for the top key are listed page 8 Fig 2 Hold action and shift action are programmable The functions for side key are listed page 8 Fig 2 Hold action and shift action are programmable The functions for microphone key are listed page 8 Fig 2 Hold action is programmable 6 1 No Function Sounds error operation beep and no action will occur Use this function when the transceiver is required to be more simple operated 6 2 AUX This function can be programmed when the voice scram bler board is not installed If this key is pressed AUX icon lights on the LCD and AUX port which is inside of the transceiver turns to the high level If pressed again the AUX icon goes off and the AUX ports turns to the lower level 6 3 Channel Down If this key is pressed once the channel number de creases by one step If this key holds down for 500ms ap proximate the channel number decreases continuously This key works as the squelch level adjuster in a squelch level adjust mode This key works as the OST operator se lectable tone number selector in the OST mode This key works as the SCR voice scrambler code selector in the voice scrambler code select mode 6 4 Channel Up If this key is pressed once the channel number increases by one step If this key hol
103. s key once the channel switches to the pre pro grammed home channel Press this key again the channel goes back to the previous channel 6 10 Invert Display Press this key once the displayed the group channel number or group channel name are inverted Press this key again the display returns to the normal For the operator who does not change the display and needs Invert only refer Invert Display setting of op tional feature 6 11 Key Lock Pressing this key causes the transceiver to accept an en try of only the Shift KeyLock PTT Emergency LAMP Monitor Monitor Momentary Squelch Off Squelch Momentary SP MIC Attenuation keys Selector switch Volume Toggle Lamp Moni Moni momen tary SO off and SQ momentary Lock is used to prevent users from unexceptable key press which might cause a transceiver malfunction The dis play does not change while the key is being locked Switching the transceiver off and on or pressing Key Lock again cancels the key lock Key locked transceiver can still receive Pressing this key while scanning keys are locked but a scanning continues 6 12 Lamp Press this key the transceiver illuminates the display and keypad back lit approximate 5 seconds Press this key again the transceiver stops the illuminating Pressing any key except the LAMP key while the illumi nated restarts the 5 second timer 6 13 Low Power Press this key
104. s mode Function setting items are listed below e o e o N Function setting mode PTT 1 Power on tone PTT 2 Control tone PTT 3 Warning tone PTT 4 Alert tone PTT 5 Minimum volume PTT 6 Battery warning on off PTT 7 Busy LED on off PTT 8 TX LED on off PTT 9 Invert display on off Side 2 PTT z Function name Display Remarks Power on tone POW T 15 or C Continuas 0 31 Control tone CON T 15 or C Continuas 0 31 Warning tone WAR T 15 or C Continuas 0 31 Alert tone ALR T 15 or C Continuas 0 31 Minimum volume MIN V 8 0 31 Battery warning BATT ON Disable Enable Busy LED B LED ON OFF ON TX LED T LED ON OFF ON Invert Display LCD ON Disabel Enable Priority 1 P1 NONE one Selected Fixed Priority 1 group 1 1 1 1 10 16 Priority 1 channel 1 1 Priority 1 In fixed Priority 2 P2 NONE one Selected Fixed O O NJIODO A GO N o gt gt N N gt Priority 2 group 1 1 10 16 gt Priority 2 channel Priority 22 In fixed gt Revert channel 1 8 10 Priority 1 setting Side 2 PTT Selected Last called 11 Priority 1 group selection PTT Last used Sel Talk back E 12 Priority 1 channel selection Priority 1 ae PTT Priority 1 Talk back 13 Priority 2 setting Priority 2 PTT
105. unction Flipping Toggle to the right during setting of RX TX fre quencies and performing Up Down operation allows fre quencies to be changed in MHz steps The RX and TX frequencies can be entered with the num ber pad keys Flow Chart Top 1 Top 2 Channel setting mode PTT Group selection Side 2 PTT Channel selection Side 2 1 RX frequency Side 2 2 RX signalling Side 2 3 TX frequency Side 2 4 TX signalling Side 2 PTT 5 Option signalling Side 2 PTT 6 Scan Delete Add Side 2 PTT 7 Wide Narrow Side 2 PTT Side 2 9 TX power Hi Low Side 2 Side 2 11 Beat shift on off Side 2 Side 2 Orange Orange Orange Orange DOTI DOT N DOT e P Orange Orange E DOTI DOTN Orange 3 3 Group Setting Mode Set data for each Group while in this mode After first entering Self programming mode select the GROUP dis play with Top 1 Top 2 and press PTT to set Group Set ting mode Once in Group Setting mode select the group that needs setting with the Top 1 Top 2 keys and press PTT Next select the channel for setting with the Top 1 Top 2 keys and press PTT The setting items and setting data will then appear so reset the data with the Top 1 Top 2 keys and press PTT When finished the display shifts to the next setting item After finished setting all items press PTT to return to next Group selection
106. ures are released in the future For details on how to obtain the firmware con tact Customer Service 4 2 Connection Procedure Connect the TK 290 to the personal computer IBM PC or compatible with the interface cable KPG 36 Connection is the same as in the PC Mode 4 3 Programming 1 qe Start up the programming software KPG 38D select firmware program in the Program item and press the Return key on the personal computer This starts up the firmware programmer The top screen is displayed Press any key to advance to the next screen Set the communications speed normally 38400 bps and communications port in the Setup item Set the firmware to be updated by File select Held down the Side 2 and PTT Turn the TK 290 power on and release Side 2 first Until the display change to PROGRAM Check the connection between the TK 290 and the per sonal computer and make sure that the TK 290 is in the Program mode Press F10 on the personal computer A window opens on the display to indicate progress of writing When the TK 290 starts to receive data PG is appeared on 2 digit sub display If writing ends successfully the red LED on the TK 290 lights and the checksum is displayed If you want to continue programming other TK 290s re peat steps 5 to 8 Notes To start the Firmware Programmer from KPG 38D the Fpro path must be set up by KPG
107. volume con trol IC603 an AF amplifier IC604 2 2 and an AF switch Q8 is on and O7 is on of the control unit and is routed to audio power amplifier IC1 of the control unit where it is amplified and output to the internal speaker Ea CABER que UMOR T ATO e I x DE ex MUTE O o o LV Biel ee ALP Lg L E Fig 4 Audio amplifier circuit 3 6 Squelch circuit It amplifies the demodulated noise signal from FM IC IC300 after filtering through BPF circuit Then the ampli fied signal is coverted to DC signal by the detection circuit The coverted signal is feeded through the microprocessor IC 406 and the voltage level is detected by ADC A D con verter to control the squelch circuit 1C403 l OUTPUT AMP SW DE INT AFC l EXPANDER OU EXT AFC Fig 5 Squelch circuit TK 290 CIRCUIT DESCRIPTION 4 Transmitter System 4 1 Microphone amplifier The signal from IC3 control unit goes through the mute switch 0403 When the SP MIC is not attached the microphone switching terminal MSW on the universal connector be comes High and mute switch 0403 is turned on When the SP MIC is attached MSW is connected to GND at inside of SP MIC For this reason 0403 is turned off the internal microphone is muted and only the input of the external mi crophone is supplied to the microphone amplifier of the TX RX unit The signal from microphone passes through the limiter circuit in D601 and through the high p
108. y ol GSS E see sss reas SS 2 de ou amp xim z ZZZ FNnonnmmeo nNnor nmvyNonorn 51 nfa vss ee 7 OT o N AF 23 STONE 0413 25 EIanicr ST SRNRNRNNNANNNNN DOD Ri pu ATS 3 MIC 22 AUDI IN HN1L02FU L Eiinanznnazananannnannn oo 51 FLASH_ROM ei REIN an 16 x a x53 D 6 R489 26 djo ER 15 c m T zm E mice T2 E DC SWITCH R624 R625 d Kar Sas E U o SM 20 MUTE 10k R602 R611 C611 5 0V m pue nep S N I xV A E m o REFIN PHI an e SB 19 AU SCALL O 22k 180k in ia IC401 alg hA vssap12 Und D297208 VARACTOR E E C604 F a TESTA OBM 2 5 auxin mul VARACTOR TUNING UNNE cNso4 A i MAN D Sa e 3 See 2 VOLTAGE TUNING 16 n i U AMPLIFIER REGULATOR m M M C432 C419 BUSY BUFFER INT ANT ne o 1C75WS1FU AMPLIFIER PTT 5600p J C635 C648 a 100p D601 MA742 2 VOLTAGE I T CLAMP eR619 R609 100 100p R626 d DC SWITCH C640 2700p J E C619 470p CJ br a305 wiren 2SJ144 GR MCZ TA75WO FU CALCE NRI R637 R638 C625 C472 X53 A 6 ACTIVE FILTER O 4 7k 0 1u SWITCH 0302 PH 3 XF301 R6 os eS 44 85MHz 23K1215 E 10301 R433 9 22k 204 232 R306 R308 C304 TC7S66FU C660 R623 R629 Vis MA2S111 Me FM IF 47k NOISE 4000p SYSTEM R421 R422 622 40u6 3330k J 22k REJECTION 1C300 lour 1 m eR646 4 7k ROL4 TA314136FN 3 kau 47k m D cont 22k 310k 70K LEVEL 10412 D e1C6 2912

TK-290 Service Manual - The Repeater Builder`s Technical

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