Kenwood TK-7100 Service Manual
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Kenwood TK-7100 Service Manual

Vhf fm transceiver
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VHF FM TRANSCEIVER
TK-7100
SERVICE MANUAL
GENERAL .................................................. 2
SYSTEM SET-UP ...................................... 3
OPERATING FEATURES .......................... 4
REALIGNMENT ......................................... 5
INSTALLATION ....................................... 11
DISASSEMBLY FOR REPAIR ................. 14
CIRCUIT DESCRIPTION .......................... 17
SEMICONDUCTOR DATA ...................... 22
COMPONENTS DESCRIPTION .............. 23
PARTS LIST ............................................. 24
EXPLODED VIEW .................................... 30
Microphone
(T91-0624-05) : K
Key top
(K29-9262-01)
CONTENTS
PACKING ................................................. 31
ADJUSTMENT ........................................ 32
TX-RX UNIT (X57-6910-XX) ............... 38
SCHEMATIC DIAGRAM .......................... 42
BLOCK DIAGRAM ................................... 46
LEVEL DIAGRAM .................................... 48
TERMINAL FUNCTION ........................... 50
SPECIFICATION ...................................... 51
© 2003-11 PRINTED IN JAPAN
B51-8670-00 ( N ) 119
Cabinet
(A01-2178-02)
Panel assy
(A62-1074-03)

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  • Page 1: Table Of Contents

    VHF FM TRANSCEIVER TK-7100 SERVICE MANUAL © 2003-11 PRINTED IN JAPAN B51-8670-00 ( N ) 119 Microphone (T91-0624-05) : K Cabinet (A01-2178-02) Key top Panel assy (K29-9262-01) (A62-1074-03) CONTENTS GENERAL ..........2 PACKING ..........31 SYSTEM SET-UP ........3 ADJUSTMENT ........32 OPERATING FEATURES ......

  • Page 2: General

    TK-7100 GENERAL 3. PRE-INSTALLATION CHECKOUT INTRODUCTION 3-1. Introduction SCOPE OF THIS MANUAL Each radio is adjusted and tested before shipment. How- This manual is intended for use by experienced techni- ever, it is recommended that receiver and transmitter opera- cians familiar with similar types of commercial grade commu- tion be checked for proper operation before installation.

  • Page 3: System Set-Up

    Your sand from getting in. 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 control station radio which is as close as practical to the antenna cable entry point.

  • Page 4: Operating Features

    TK-7100 OPERATING FEATURES 1-3. Display 1. Controls and Functions 1-1. Front Panel Indicator Description Appears while transmitting. 1-2. Microphone Appears when trunking is activated. Appears while monitoring the selected channel (squelch is off). Appears when making a call using Code Squelch or Selective Call.

  • Page 5: Realignment

    The data can be input to or read from TK-7100 and edited on the screen. The programmed or edited data can be 2. How to Enter Each Mode printed out. It is also possible to tune the transceiver.

  • Page 6: Self Programming Mode

    TK-7100 REALIGNMENT 4-1. Adding the data password. 5-2. Adding the Data Password If the data password is set in the optional feature menu, If the data password is set in the optional feature menu, you must enter the password (Master transceiver) to activate you must enter the password to activate a self programming a clone mode.
  • Page 7 TK-7100 REALIGNMENT No. Function Choices Display Remarks No. Function Choices Display Remarks D Q T 0 0 0 Ι ✽ - - - - - - - - key : Off/QT/DQT DQT 000~777 key : Hold 1 second D Q T 7 7 7 Ι ✽...
  • Page 8 TK-7100 REALIGNMENT ■ Flow Chart 5-4. DTMF Setting Mode Each radio can be setup in its action mode by using the Self programming mode panel keys. [MON] • Pressing [SCN] when “ SELF ” is displayed, sets the [MON] Channel Group DTMF setting mode.
  • Page 9 TK-7100 REALIGNMENT 4. Place the KCT-39 sumi tube along the chassis and insert 6. Accessory Connection Cable (KCT-39) the cable tie into the TX-RX PCB slot, as shown in the dia- The KCT-39 is an accessory connection cable for connect- gram below.
  • Page 10 TK-7100 REALIGNMENT 7. Align the terminal B KCT -39 cable underneath the termi- 10. Connect the KCT-39 to the external accessory by insert- nal A cable align the speaker cable (T07 -1082 -05) below ing the crimp terminal ( ) into the square plug ( ), both both KCT-39 cables.
  • Page 11 TK-7100 REALIGNMENT / INSTALLATION 7. Ignition Sense Cable (KCT-18) 1. Optional Board The KCT-18 is an optional cable for enabling the ignition 1-1. Voice Scrambler Board Connection ■ Modification function. The ignition function lets you turn the power to the transceiver on and off with the car ignition key.

  • Page 12: Installation

    TK-7100 INSTALLATION ■ Pins Connection 2. SmarTrunk Voice scrambler 12 pins lead wire 11 pins lead wire 1. Unscrew the five M2.6 screws (N87-2614 -46), then re- move the shielding cover (F10-2491-03). functions with connector (A) with connector (B) A-12 –...
  • Page 13 Part No. : G13-2006-04 Note : • For the SmarTrunk option, cushion C and the insulation sheet are included in the package. • For TK-7100 & TK-8100 series, cushion A is not used. Cushion A is replaced by cushion F. Variable Capacitor •...

  • Page 14: Disassembly For Repair

    TK-7100 INSTALLATION / DISASSEMBLY FOR REPAIR 8. Align the connector on the underside of the ST-865KW4 1. When you remove the panel, turn the transceiver up side with the connector on the top side of the ST-909, then down. Detach the panel by lifting the tabs as shown be- press down on cushion E to secure them.

  • Page 15: Disassembly For Repair

    TK-7100 DISASSEMBLY FOR REPAIR 4-1. Remove the display unit To remove the display unit from the panel, follow the cor- Open the top of display rect procedures shown (A regular screw driver is needed unit at No. 4 as indicated.
  • Page 16 TK-7100 DISASSEMBLY FOR REPAIR Snap in bottom of display unit (No. 2). Insert phone jack into panel first. Snap in top of display unit (No. 4). Snap in bottom of display unit (No. 3). Ensure that display unit holes locator is properly located on the illumination guide locators as shown.

  • Page 17: Circuit Description

    TK-7100 CIRCUIT DESCRIPTION ■ IF Amplifier Frequency Configuration The first IF signal is amplified by Q351, and the enters The receiver utilizes double conversion. The first IF is IC301 (FM processing IC). The signal is heterodyned again 49.95MHz and the second IF is 450kHz. The first local oscil- with a second local oscillator signal within IC301 to create a lator signal is supplied from the PLL circuit.
  • Page 18 TK-7100 CIRCUIT DESCRIPTION ■ Wide/Narrow Switching Circuit ■ Squelch Circuit The Wide port (pin 65) and Narrow port (pin 64) of the CPU The detection output from the FM IF IC (IC301) passes is used to switch between ceramic filters. When the Wide through a noise amplifier (Q301) to detect noise.
  • Page 19 TK-7100 CIRCUIT DESCRIPTION ■ Unlock Circuit Transmitter System During reception, the 8RC signal goes high, the 8TC signal ■ Outline goes low, and Q34 turns on. Q33 turns on and a voltage is The transmitter circuit produces and amplifies the desired applied to the collector (8R).
  • Page 20 CIRCUIT DESCRIPTION ■ Key Matrix Circuit Control Circuit The TK-7100 front panel has function keys. Each of them The CPU carries out the following tasks: is connected to a cross point of a matrix of the KMI1 to KMO2 1) Controls the WIDE, NARROW, TX/RX outputs.
  • Page 21 TK-7100 CIRCUIT DESCRIPTION ■ Decode Power Supply Circuit • QT/DQT/DTMF When the power switch on the display unit is pressed, the The signal (W/NO (EVOL2)) goes to SIGNAL (pin 88) of power port on the display unit which is connected port 17 CPU (IC101).

  • Page 22: Semiconductor Data

    TK-7100 SEMICONDUCTOR DATA Microprocessor : 30622MAA-B86GP (TX-RX Unit IC101) ■ Terminal Function Pin No. Name Function Pin No. Name Function QT/DQT QT/DQT output. AMPSW AF AMP switch. DTMF/MSK DTMF/MSK/BEEP output Common data. PLLE PLL IC chip select. Common clock. 55,56 GND.

  • Page 23: Components Description

    TK-7100 COMPONENTS DESCRIPTION Display Unit (X54-3430-20) Ref. No. Parts name Description Ref. No. Parts name Description Q251 Transistor Buffer amplifier / RX audio LCD controller Q252,253 FET AF mute / Active while AFM is H Transistor DC switch Q254 Digital transistor...

  • Page 24: Parts List

    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-7100, DISPLAY UNIT (X54-3430-20) TX-RX UNIT (X57-6910-XX) Desti- Desti- Ref. No.
  • Page 25 CHIP C 1000PF C255 CK73GB1H822K CHIP C 8200PF C256 CK73GB1E183K CHIP C 0.018UF C373 CC73GCH1H040B CHIP C 4.0PF C257 CK73GB1C393K CHIP C 0.039UF C374 CC73GCH1H220J CHIP C 22PF K : TK-7100 K M : TK-7100 M M2 : TK-7100 M2...
  • Page 26 CERAMIC FILTER CF302 L72-0999-05 CERAMIC FILTER C460 CC73GCH1H180J CHIP C 18PF C461 CK73GB1H102K CHIP C 1000PF L101 L92-0443-05 FERRITE CHIP C462 CC73GCH1H100C CHIP C 10PF L201 L92-0443-05 FERRITE CHIP K : TK-7100 K M : TK-7100 M M2 : TK-7100 M2...
  • Page 27 R225 RK73GB1J154J CHIP R 150K 1/16W R66,67 RK73GB1J473J CHIP R 1/16W R68,69 RK73GB1J102J CHIP R 1.0K 1/16W R226 RK73GB1J104J CHIP R 100K 1/16W R227 RK73GB1J223J CHIP R 1/16W K : TK-7100 K M : TK-7100 M M2 : TK-7100 M2...
  • Page 28 R351 RK73GB1J471J CHIP R 1/16W R352 RK73GB1J101J CHIP R 1/16W R436 RK73GB1J124J CHIP R 120K 1/16W R353 RK73GB1J104J CHIP R 100K 1/16W R437 RK73GB1J102J CHIP R 1.0K 1/16W K : TK-7100 K M : TK-7100 M M2 : TK-7100 M2...
  • Page 29 TH301 B57331V2104J THERMISTOR D408 MA2S111 DIODE TH351 B57331V2104J THERMISTOR D409 DAN235E DIODE D501 1SS355 DIODE D502 DA221 DIODE D503 02DZ5.1(Y) ZENER DIODE D602 MA4PH633 DIODE D603 XB15A709 DIODE K : TK-7100 K M : TK-7100 M M2 : TK-7100 M2...

  • Page 30: Exploded View

    TK-7100 EXPLODED VIEW A M3 x 8 : N67-3008-46 B M2.6 x 6 (Br-Tap) : N87-2606-46 C M2.6 x 14 (Br-Tap) : N87-2614-46 Part name label face down IC502 Display unit IC252 TX-RX unit S/No. label Parts with the exploded numbers larger than 700 are not supplied.

  • Page 31: Packing

    TK-7100 PACKING 41 Protection bag 50 Screw set 46 Bracket (H25-0103-04) (N99-0395-05) (J29-0662-03) 12 DC cord (E30-3339-05) 23 Fuse (6*30) (F51-0016-05) x 2 53 Microphone (T91-0624-05) : K 45 MIC holder (J19-1584-05) : K 38 Inner packing case (H02-0617-02) 7 Instruction manual...

  • Page 32: Adjustment

    TK-7100 ADJUSTMENT 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/0.1µV to greater than –7dBm/100mV 2. Power Meter Input Impedance 50Ω Operation Frequency...
  • Page 33 TK-7100 ADJUSTMENT ■ Notes Adjustment Location • EEPROM ■ Switch The tuning data (Deviation, Squelch, etc.) for the EEP- ROM, is stored in memory. When parts are changed, re- Volume Channel up/down up/down adjust the transceiver. Display Power Speaker • AF PA IC (IC252) How to mounting the IC252.
  • Page 34 TK-7100 ADJUSTMENT PCB Section Measurement Adjustment Specifications/ Item Condition Remarks Test equipment Terminal Parts Method 1. Setting 1) Power supply voltage DC Power supply terminal : 13.6V ± 0.1V 2. VCO lock 1) CH : TX high Digital voltmeter TC402 5.5V...
  • Page 35 TK-7100 ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Test equipment Terminal Parts Method Remarks 3. Squelch 1 1) CH : RX low (Wide) PC key Adjust to open the squelch CH : RX center (Wide/Narrow) CH : RX high (Wide) 2) SSG output : –120dBm (0.22µV) (Wide)

  • Page 36: Pc Board

    TK-7100 PC BOARD DISPLAY UNIT (X54-3430-20) Component side view (J72-0885-09) VOL UP POWER VOL DN DISPLAY UNIT (X54-3430-20) Foil side view (J72-0885-09) HOOK...
  • Page 37 TK-7100 PC BOARD DISPLAY UNIT (X54-3430-20) Component side view (J72-0885-09) J72-0885-09 Ref. No. Address Ref. No. Address CH UP CH DN Component side Layer 1 Layer 2 Foil side DISPLAY UNIT (X54-3430-20) Foil side view (J72-0885-09) Ref. No. Address Ref. No. Address...
  • Page 38 TK-7100 TK-7100 PC BOARD PC BOARD DISPLAY UNIT (X54-3430-20) Component side view (J72-0885-09) DISPLAY UNIT (X54-3430-20) Component side view (J72-0885-09) J72-0885-09 Ref. No. Address Ref. No. Address VOL UP CH UP POWER VOL DN CH DN Component side Layer 1...
  • Page 39 TK-7100 PC BOARD TX-RX UNIT (X57-6910-XX) -20 : K,M -21 : M2 Component side view (J72-0917-09) EXT. SP R272 D251 C272 R274 R275 C271 R273 TEMP2 CNVSS IC252 R101 R271 C276 POWER C270 R270 RESET Q254 R267 R223 R202 R277...
  • Page 40 TK-7100 PC BOARD TX-RX UNIT (X57-6910-XX) -20 : K,M -21 : M2 Component side view (J72-0917-09) IC502 C615 C610 R601 C612 TH98 C607 R603 D606 R602 R605 R533 R606 R532 TEMP1 R531 R379 C389 C518 C545 C516 C574 Q354 R221...
  • Page 41 TK-7100 TK-7100 PC BOARD PC BOARD TX-RX UNIT (X57-6910-XX) -20 : K,M -21 : M2 TX-RX UNIT (X57-6910-XX) -20 : K,M -21 : M2 Component side view (J72-0917-09) Component side view (J72-0917-09) EXT. SP IC502 C615 C610 R601 C612 TH98...
  • Page 42 TK-7100 PC BOARD TX-RX UNIT (X57-6910-XX) -20 : K,M -21 : M2 Foil side view (J72-0917-09) R800 L604 D604 C387 R376 C388 R378 D354 L601 L357 D603 L503 TC352 C576 C384 CN301 CN503 D352 C377 C370 R359 R370 R374 C367...
  • Page 43 TK-7100 PC BOARD TX-RX UNIT (X57-6910-XX) -20 : K,M -21 : M2 Foil side view (J72-0917-09) C283 R281 R520 R517 C524 R515 C515 CN502 CN501 C510 C509 L502 R513 R509 Q502 R103 R102 R512 C279 D502 R131 R130 C104 R129...
  • Page 44 TK-7100 TK-7100 PC BOARD PC BOARD TX-RX UNIT (X57-6910-XX) -20 : K,M -21 : M2 TX-RX UNIT (X57-6910-XX) -20 : K,M -21 : M2 Foil side view (J72-0917-09) Foil side view (J72-0917-09) C283 R281 R800 L604 D604 C387 R376 C388...

  • Page 45: Tx-Rx Unit (X57-6910-Xx)

    TK-7100 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6910-XX) D403,404 C430 RX VCO Q402,403 RX VCO R:6.5V R:0.8V CHARGE PUMP Q405 L406 C426 C432 D404 L408 2SK508NV(K52) R403 R414 R402 MA2S304 0.5p VOTAGE R401 DROPPED D402 R410 Q402 L405 HZU5ALL R418 R419 R421...
  • Page 46 TK-7100 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6910-XX) T:6.7V PRE DRIVE AMP 6.2V RF AMP BUFFER AMP T:1.0V T:1.2V RF SWITCH 4.8V Q501 7.2V Q410 Q411 C502 C509 C503 2SC3357 1.2V R503 2SC5108(Y) VCC1 VCC2 2SC4649(N,P) L421 C466 C456 C459 C460 C454...
  • Page 47 TK-7100 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6910-XX) IC502 POWER MODULE DRIVE1 T:6.0V RA30H1317M-31 Q502 C515 2SC3357 R800 C516 C604 C612 T:0.6V R92-1061-05 ANT SW T:12.9V L503 D602 L604 2.5T MA4PH633 C603 L603 1000p T:0.9V D502 DA221 D606,607 APC VOLTAGE D1-3 DETECT...
  • Page 48 TK-7100 SCHEMATIC DIAGRAM DISPLAY UNIT (X54-3430-20) SURGE ABSORPTION HOOK R90-0724-05 POWER SWITCH POWER HOOK KMI2 KMI1 COM2 SEG20 KMI3 SEG19 COM3 KMO1 SEG18 4.9V KMI4 VLCD SEG17 KMO2 VLCD1 SEG16 LCD CONTROLLER VLCD2 SEG15 LC75834W SEG14 SEG13 SEG12 SEG11 SEG10...
  • Page 49 TX-RX UNIT (X57-6910-XX) DISPLAY UNIT (X54-3430-20) T:6.7V POWER MODULE IC502 6.2V PRE DRIVE AMP DRIVE1 T:6.0V D403,404 RX VCO C430 BUFFER AMP RF AMP RF SWITCH T:1.0V T:1.2V RA30H1317M-31 4.8V Q501 Q502 C515 Q402,403 RX VCO Q410 Q411 7.2V 2SC3357 R:6.5V R:0.8V 1.2V...

  • Page 50: Block Diagram

    TK-7100 BLOCK DIAGRAM TX-RX UNIT X57-691*-** DISPLAY UNIT X54-3430-20 Q404 2SC4649(N,P) POWER 2SK508 FNC1~FNC8 Q402 IC401 PTT(TXD) CHARGE 2SA1832(GR) MB15A02 PUMP PLLE HOOK(RXD) LOOP Q407 DATAI PLL IC FILTER 2SJ243 DETO 16.8MHz TXAFI CHARGE Q403 KMO1 TXAFO PUMP 16.8MHz 2SC4738(GR)
  • Page 51 TK-7100 BLOCK DIAGRAM IC502 : RA30H1317M-31 POWER MODULE Q411 Q501 Q502 Q405 Q410 IC402 2SC4649 D602 2SC3357 2SC3357 2SK508NV(K52) 2SC5108(Y) UPB1509GV (N,P) MA4PH633 DRIVE ANT SW BUFF DIVIDER DRIVE Q408 D409 Q407 KRX102U DAN235E 2SJ243 D606 POW. D607 POW. MA742...

  • Page 52: Level Diagram

    TK-7100 LEVEL DIAGRAM Receiver Section Center Frequency 49.95MHz 450kHz W : –77.5dBm N : –74.0dBm W : –123.5dBm W : –119.0dBm W : –104.5dBm W : –104.0dBm W : –112.0dBm W : –92.0dBm /CF2 N : –123.0dBm N : –118.5dBm N : –103.5dBm...
  • Page 53 TK-7100 LEVEL DIAGRAM 450kHz Audio Frequency W : –85.0dBm N : –84.5dBm /CF2 0.33Vrms 0.32Vrms 0.26Vrms 0.30Vrms 0.31Vrms 10mVrms 0.50Vrms 0.45Vrms IC301 IC251 IC251 IC251 IC251 IC161 IC252 Q251 vel meter. 12dB SINAD.) To make measurements in the AF section, connect the AC level meter.

  • Page 54: Terminal Function

    TK-7100 TERMINAL FUNCTION ■ Function Port Assignment Name Function KDS100, KGP-2A/2B Data Name Clock FNC1 Chip enable FNC2 FNC3 Data Channel Switched B FNC4 KMO2 Key matrix output 2 FNC5 Carrier Operated Relay KMI4 Key matrix input 4 FNC6 Audio Mute...

  • Page 55: Specification

    TK-7100 SPECIFICATIONS GENERAL Frequency Range ....... K,M : 146 to 174MHz M2 : 136 to 162MHz Channels / Groups ......64CH / 8GRP Channel Spacing ......... Wide : 25kHz Narrow : 12.5kHz PLL Channel Stepping ......2.5, 5, 6.25, 7.5kHz Operating Voltage .......
  • Page 56 Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium KENWOOD ELECTRONICS FRANCE S.A. 13, Boulevard Ney, 75018 Paris, France KENWOOD ELECTRONICS U.K. LIMITED KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands KENWOOD ELECTRONICS ITALIA S.p.A.

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