Kenwood TK-7102H manual

© 2003-6 PRINTED IN JAPAN B51-8610-10 ( N ) 975 VHF FM TRANSCEIVER T K-710 2 H SER VICE MANU AL Panel assy (A62-0942-03) Front glass (B10-2753-03) Cabinet (A01-2181-01) Chassis (A10-4048-21) Key top (K29-9065-01) Modular jack (E08-0877-05) GENERAL .................................................. 2 SYSTEM SET-UP ..................................[...]

T K-71 0 2 H 2 INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced techni- cians familiar with similar types of commercial grade commu- nications equipment. It contains all required service informa- tion for the equipment and is current as of this publication date. Changes which may occur after publication are covered b[...]

T K-71 0 2 H 3 5. INSTALLATION PLANNING – CONTROL STATIONS 5-1. Antenna system Control station. The antenna system selection depends on many factors and is beyond the scope of this manual. Your KENWOOD dealer can help you select an antenna system that will best serve your particular needs. 5-2. Radio location Select a convenient location for your[...]

T K-71 0 2 H 4 OPERA TING FEA TURES Indicator Description Light while transmitting. Lights when a signal is detected on the currently selected channel. Lights while the function programmed onto its corresponding key is activated. Lights while the function programmed onto its corresponding key is activated. Lights to display the currently selected c[...]

T K-71 0 2 H 5 2. Operation Features The TK-7102H is a VHF FM radio designed to operate in conventional format. The programmable features are sum- marized. 3. Transceiver Controls and Indicators 3-1. Front Panel Controls All the keys on the front panel are momentary-type push buttons. The functions of these keys are explained below. • POWER key T[...]

T K-71 0 2 H 6 4. Scan Operating ■ SCAN start condition Two or more channels must be added to all channels that can be scanned. The transceiver must be in normal receive mode (PTT off). When you activate the key programmed to the scan ON/ OFF function, the scan starts. The indicator next to the pro- grammed key LED blinks. ■ Scan stop condition[...]

T K-71 0 2 H 7 ■ SP Unmute You can select the type of SP Unmute system for each channel. The selection is as follows. Carrier, QT/DQT: Channel with this option will not check ID Code in order to open its speaker. Carrier+DTMF, QT/DQT+DTMF: Channel that is set with this option will have to check for ID Code in order to open its speaker. Default: C[...]

T K-71 0 2 H 8 1. Modes User mode PC mode Data program- ming mode PC test mode PC tuning mode Clone mode Mode Function User mode For normal use. PC mode Used for communication between the radio and PC (IBM compatible). Data programming Used to read and write frequency data mode and other features to and from the radio. PC test mode Used to check th[...]

T K-71 0 2 H 9 4. Clone Mode Programming data can be transferred from one radio to another by connecting them via their modular microphone jacks. The operation is as follows (the transmit radio is the master and the receive radio is the slave). Note : Clone mode should enabled. 1. Turn the master TK-7102H power ON with the [1] key held down. The TK[...]

T K-71 0 2 H 10 CN2 CN3 A B 7 8 6 5 Chassis Chassis Cushion KCT -39 sumi tube PCB Face down A void forming the wiring towards the shielding cover closure area. Wire harness band (Stopper) End view of this area 9 10 13 15 1 3 3. Insert the KCT-39 cable ( 5 ) into the chassis ( 6 ). The wire harness band ( 7 ) must be inside the chassis and face down[...]

T K-71 0 2 H 11 REALIGNMENT / INST ALLA TION 6-3. Modifying the Transceiver Modify the transceiver as follows to turn the power on and off with the ignition key. 1. Remove the jumper resistor (0 Ω ) R71 of the TX-RX unit. ■ Setting With the KPG-70D Select “External Devices” from the “Edit” menu and en- able the “Ignition Sense”. R71[...]

T K-71 0 2 H 12 ■ Pins Connection Voice scrambler 12 pins lead wire 11 pins lead wire functions with connector (A) with connector (B) A A-12 – B A-11 – C A-10 – D A-9 – 5– B-5 6– B-7 7 A-8 – 8 A-7 – 9 A-3 – 10 – B-11 11 – B-9 12 – B-4 INST ALLA TION ■ Setting With the KPG-70D Select “External Devices” from the “Edi[...]

T K-71 0 2 H 13 DISASSEMBL Y FOR REP AIR 1. When you remove the panel, turn the transceiver up side down. Detach the panel by lifting the tabs as shown be- low. Fig. 1 Fig. 2 2. To remove the cabinet, first turn the transceiver up side down. Detach the cabinet by prying the tabs as shown below. 3. To remove the display unit PCB, detach the PCB by l[...]

T K-71 0 2 H 14 Frequency Configuration The receiver utilizes double conversion. The first IF is 49.95MHz and the second IF is 450kHz. The first local oscil- lator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the necessary frequencies. Figure 1 shows the frequencies. CIRCUIT DESCRIPTION Receiver System The r[...]

T K-71 0 2 H 15 ■ Wide/Narrow Changeover Circuit The Wide port (pin 65) and Narrow port (pin 64) of the CPU is used to switch between ceramic filters. When the Wide port is high, the ceramic filter SW diodes (D303, D302) cause CF301 to turn on to receive a Wide signal. When the Narrow port is high, the ceramic filter SW di- odes (D303, D302) caus[...]

T K-71 0 2 H 16 ■ Unlock Circuit During reception, the 8RC signal goes high, the 8TC signal goes low, and Q34 turns on. Q33 turns on and a voltage is applied to the collector (8R). During transmission, the 8RC signal goes low, the 8TC signal goes high and Q36 turns on. Q35 turns on and a voltage is applied to 8T. The CPU in the control unit monit[...]

T K-71 0 2 H 17 Control Circuit The CPU carries out the following tasks: 1) Controls the WIDE, NARROW, TX/RX outputs. 2) Adjusts the AF signal level of the AF filter (IC251) and turns the filter select compounder on or off. 3) Controls the display unit. 4) Controls the PLL (IC401). 5) Controls the D/A converter (IC161) and adjusts the vol- ume, mod[...]

T K-71 0 2 H 18 ■ Decode • QT/DQT/DTMF The signal (W/NO (EVOL2)) goes to SIGNAL (pin 88) of CPU (IC101). The QT/DQT signal will pass through the low- pass filters in the CPU (IC101) and be decoded within the CPU (IC101). The DTMF signal will be decoded within the CPU (IC101). ■ D/A Converter The D/A converter (IC161) is used to adjust MO modu[...]

T K-71 0 2 H 19 SEMICONDUCTOR DA T A ■ Terminal Function Pin No. Name I/O Function 1 QT/DQT O QT/DQT output. 2 DTMF/MSK O DTMF/MSK/BEEP output 3 PLLE O PLL IC chip select. 4,5 NC I 6 GND - GND. 7 CNVSS - DNVss for flash. 8 EVLLD O E-volume LD. 9 BSHIFT O Beat shift. 10 RESET - Reset. 11 XOUT - X’tal (14.318MHz). 12 VSS - GND. 13 XIN - X’tal ([...]

T K-71 0 2 H 20 Display Unit (X54-3460-20) Ref. No. Parts name Description IC1 IC Shift register for LED & MICBL control Q4 Transistor Busy light switch Q9,10 Transistor Key backlit switch D1~4 LED Key backlit D5 LED Monitor key light D6 LED Programmable key light D7~10 LED Channel key light D11 LED Busy D12 LED Transmit D13 Diode Surge protect[...]

T K-71 0 2 H 21 P ARTS LIST ✽ New Parts. indicates safety critical components. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. L : Scandinavia K : USA P : Canada Y : PX (Far East, Hawaii) T : England E : Europe Y : AAFES (Europe) X : Australi[...]

T K-71 0 2 H 22 P ARTS LIST Ref. No. Address Parts No. Description Desti- nation New parts Ref. No. Address Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6700-XX) C103 CK73GB1H102K CHIP C 1000PF K C104 CK73GB1C104K CHIP C 0.10UF K C151 CK73GB1H182K CHIP C 1800PF K C152 CK73GB1H392K CHIP C 3900PF K C161 CK73GB1H102K CHIP C 1000PF K C[...]

T K-71 0 2 H 23 P ARTS LIST Ref. No. Address Parts No. Description Desti- nation New parts Ref. No. Address Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6700-XX) C416-418 CK73GB1H102K CHIP C 1000PF K C421,422 CK73GB1H471K CHIP C 470PF K C423 C92-0555-05 CHIP-TAN 0.047UF 35WV C424 C92-0004-05 CHIP-TAN 1.0UF 16WV C425 C92-0001-05 CHI[...]

T K-71 0 2 H 24 P ARTS LIST Ref. No. Address Parts No. Description Desti- nation New parts Ref. No. Address Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6700-XX) L352 L41-5685-08 SMALL FIXED INDUCTOR L354-356 L34-4612-05 AIR-CORE COIL K,M L354-356 L34-4613-05 AIR-CORE COIL K2,M2 L357 L34-4611-05 AIR-CORE COIL L401 L92-0443-05 FERRI[...]

T K-71 0 2 H 25 P ARTS LIST Ref. No. Address Parts No. Description Desti- nation New parts Ref. No. Address Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6700-XX) R230 RK73GB1J124J CHIP R 120K J 1/16W R231 RK73GB1J683J CHIP R 68K J 1/16W R232 RK73GB1J912J CHIP R 9.1K J 1/16W R233 RK73GB1J682J CHIP R 6.8K J 1/16W R249-251 RK73GB1J473[...]

T K-71 0 2 H 26 P ARTS LIST Ref. No. Address Parts No. Description Desti- nation New parts Ref. No. Address Parts No. Description Desti- nation New parts TX-RX UNIT (X57-6700-XX) R440-442 RK73GB1J101J CHIP R 100 J 1/16W R443 RK73GB1J222J CHIP R 2.2K J 1/16W R444 RK73GB1J102J CHIP R 1.0K J 1/16W R501 RK73GB1J102J CHIP R 1.0K J 1/16W R502 RK73GB1J271[...]

T K-71 0 2 H 27 EXPLODED VIEW A B 1 2 3 16 43 47 28 5 3 19 1 2 32 33 21 31 26 24 15 Q504 IC252 A 700 Caution label 701 S/No. label A A C C C C C C Cx2 Bx12 B B 12 30 27 25 10 TX-RX unit Display unit A M2.6 x 8 : N67-2608-46 B M2.6 x 6 (Br -T ap) : N87-2606-46 C M2.6 x 14 (Br -T ap) : N87-2614-46 Parts with the exploded numbers larger than 700 are n[...]

T K-71 0 2 H 28 P ACKING C D 1 2 3 37 Protection bag (H25-2341-04) 37 Protection bag (H25-2341-04) 35 Packing fixture (H12-3112-05) 35 Packing fixture (H12-3112-05) 8 Instruction manual (English) (B62-1596-10) 9 Instruction manual (Spanish) (B62-1597-10) 702 Pamphlet 703 Pamphlet 48 Microphone (T91-0624-05) : K,K2 38 Item carton cse (H52-1829-22) 4[...]

T K-71 0 2 H 29 Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 136 to 175MHz (SSG) Modulation Frequency modulation and external modulation Output –127dBm/0.1 µ V to greater than –7dBm/100mV 2. Power Meter Input Impedance 50 Ω Operation Frequency 136 to 175MHz or more Mea[...]

T K-71 0 2 H 30 ADJUSTMENT Adjustment Location ■ Switch ■ Adjustment Points ■ Notes • EEPROM The tuning data (Deviation, Squelch, etc.) for the EEP- ROM, is stored in memory. When parts are changed, re- adjust the transceiver. • AF PA IC (IC252) How to mounting the IC252. • Speaker Cable The speaker cable should be formed before mountin[...]

T K-71 0 2 H 31 ADJUSTMENT PCB Section 1. Setting 1) Power supply voltage DC Power supply terminal : 13.6V 2. VCO lock 1) CH : TX high Digital voltmeter CV TC402 5.5V ± 0.1V voltage* 2) CH : RX high TC401 5.5V ± 0.1V 3) CH : TX low Check 0.7V or more 4) CH : RX low 3. IF coil 1) CH : RX center (Wide) SSG AFV L301 3.25~3.35V (DC) 2) SSG output : ?[...]

T K-71 0 2 H 32 ADJUSTMENT Receiver Section 1. Seisitivity 1) CH : RX low (Wide/Narrow) SSG ANT Check SINAD CH : RX center (Wide/Narrow) Oscilloscope EXT. SP : 12dB or higher CH : RX high (Wide/Narrow) AF V.M 2) SSG output Distortion meter : –118dBm (0.28 µ V) (Wide) : –116dBm (0.35 µ V) (Narrow) Mod : 1kHz Dev : ± 3.0kHz (Wide) Dev : ± 1.5[...]

T K-71 0 2 H 33 If normal power is not obtained, please follow the step below Open the shielding cover (upper), and screw 3 locations around ANT pin. 1. Switch off the transceiver. Impedance of Final FET (Q504) and Drive FET (Q503) can be measured easily using DVM Ω mode. Normal condition – Gate : 20k Ω ~50k Ω , Drain : 1M Ω ~2M Ω The a[...]

T K-71 0 2 H 34 TERMINAL FUNCTION CN2 No. Name I/O Function 1S BO Battery voltage DC supply 2N C - - 3 GND O Ground 4N C - - 5 FNC1 I/O Programable I/O (programmed by FPU) 6 FNC2 I/O Programable I/O (programmed by FPU) 7 FNC3 I/O Programable I/O (programmed by FPU) 8 FNC4 I/O Programable I/O (programmed by FPU) 9 FNC5 I/O Programable I/O (programme[...]

S R Q P O N M L K J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 GND PTT MIC POWER ME HOOK KMI2 CM KMI1 KMI3 KMO1 KMI4 KMO2 SB 5C CL DI CN1 HOOK CM PTT MIC SB MBL GND ME 18 1 C25 C27 Q10 C4 C8 C9 D13 L1 IC1 1 89 16 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 Q4 Q9 R1 R2 R3 R4 R5 R6 R7 R8 R9 CP3 CP4 C10 C11 C12 C13 C14 C15 C16 C17 C18 DI CL 5C[...]

A B C DE FG H IJ KL M NO PQR S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 C21 C22 C23 R210 R405 R407 R408 C29 R409 R218 R219 R605 IC161 1 12 13 24 R412 R221 R222 R223 R224 R418 R226 R227 R228 R421 R422 CV C44 C45 R232 R233 C49 C50 C51 C201 C202 C52 C204 C205 C207 C208 C401 C402 C403 C404 C406 C212 R250 C409 C217 C218 C411 C605 C220 C414 C608 C221 C72 C416 C2[...]

S R Q P O N M L K J I H G F E D C B A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 C24 CF301 C25 C26 CF302 R601 R602 C30 C33 C34 C35 R415 R416 C36 R417 C37 C38 IC31 I O G C39 IC32 IC34 1 34 5 1 34 5 IC35 C40 C41 C42 C43 R423 R424 R425 R426 R427 R428 CN601 ANT R429 R430 R431 R432 C53 R433 C54 R434 R435 C55 R436 C56 R437 R438 R439 R440 C61 R441 R442 R443 R444 R2[...]

A B C DE FG H IJ KL M NO PQR S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 C24 CF301 C25 C26 CF302 R601 R602 C30 C33 C34 C35 R415 R416 C36 R417 C37 C38 IC31 I O G C39 IC32 IC34 1 34 5 1 34 5 IC35 C40 C41 C42 C43 R423 R424 R425 R426 R427 R428 CN601 ANT R429 R430 R431 R432 C53 R433 C54 R434 R435 C55 R436 C56 R437 R438 R439 R440 C61 R441 R442 R443 R444 R251 R252[...]

46 7 6 5 4 3 2 1 T S R Q P O N M L K J I H G F E D C B A SCHEMA TIC DIAGRAM T K-71 0 2 H Note : The components marked with a dot ( • ) are parts of layer 1. T:7.9V R:2.78V R:4.9V R:7.59V R:7.25V R:0.75V R:6.2V R:7.08V T:4. 9V T:2.4 V R:0.7mV R:2.46V W:4.9V N:0V R:13.5V R:0.64V T:7.5V R:4.82V R:6.9V T:6.9V R:6.8V R:4.17V R:5.44V R:6.2V R:4.85V T:7[...]

T K-71 0 2 H T K-71 0 2 H 47 48 BLOCK DIAGRAM Q440 2SC4617(S) DT Q33 2SA1745(6,7) BA TT CF302 (NARROW) PRE DRIVE AMP D303 DAN222 MICMT2 SW IC202 NJM2904V 8TC AV R 5V XF351 49.95MHz 8RC D201 DAN222 D202 1SS372 IC66 A T24C64N10SI18 RF IC402 UPB1509GV DIVIDER D302 DAN222 PC ANT Q87 2SK1824 IC161 M62363FP (3/8) IC161 M62363FP(6/8) IC161 M62363FP (7/8) [...]

T K-71 0 2 H T K-71 0 2 H 49 50 LEVEL DIAGRAM S To make measurements in the RF section, connect the RF W attmeter (50 Ω ). 13dBm –5dBm G2 Q351 14 3 J1 IC201 IC161 D –7dBm IC203 Q353 XF1 12 7 Q251 IC202 Q504 To make measurements in the AF section, connect the AC level meter . (ANT input : –53dBm, 1kHz FM, 3kHz DEV (Wide)/1.5kHz DEV (Narrow))[...]

T K-71 0 2 H 51 GENERAL Frequency Range ............................... K , M : 146 to 174MHz K2,M2 : 136 to 162MHz Channels / Groups .............................. 4 channels Channel Spacing ................................. W ide : 25kHz Narrow : 12.5kHz PLL Channel Stepping ........................ 2.5, 5, 6.25, 7.5kHz Operating Voltage ........[...]

KENWOOD CORPORA TION 2967-3, Ishikawa-machi, Hachioji-shi, T okyo, 192-8525 Japan KENWOOD U.S.A. CORPORA TION 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 1S8 KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrücker Str . 15, 63150 Heusenst[...]