Instruction/ maintenance manual of the product TK-7102H Kenwood
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© 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 ..
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.
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.
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.
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.
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.
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.
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.
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.
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 ).
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”.
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.
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.
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.
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.
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.
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.
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).
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.
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 LE.
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.
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.
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.
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 SMAL.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 (.
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 C.
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 C.
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 .
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.
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.
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.
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 .
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.
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 .
An important point after buying a device Kenwood TK-7102H (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Kenwood TK-7102H yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Kenwood TK-7102H - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Kenwood TK-7102H you will learn all the available features of the product, as well as information on its operation. The information that you get Kenwood TK-7102H will certainly help you make a decision on the purchase.
If you already are a holder of Kenwood TK-7102H, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Kenwood TK-7102H.
However, one of the most important roles played by the user manual is to help in solving problems with Kenwood TK-7102H. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Kenwood TK-7102H along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
