Kenwood TK-8102 Service Manual
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Kenwood TK-8102 Service Manual

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UHF FM TRANSCEIVER
TK-8102
SERVICE MANUAL
REVISED II
This service manual applies to products with 50800001 or subsequent serial numbers.
In terms of the products with the serial numbers earlier than 50800001, refer to the TK-8102 service manual as per part No.
B51-8585-00 and B51-8585-10.
Cabinet
(A01-2178-02)
Modular jack
(E08-0877-05)
GENERAL .................................................. 2
SYSTEM SET-UP ...................................... 3
OPERATING FEATURES .......................... 4
REALIGNMENT ......................................... 8
INSTALLATION ....................................... 12
DISASSEMBLY FOR REPAIR ................. 15
CIRCUIT DESCRIPTION .......................... 16
SEMICONDUCTOR DATA ...................... 21
COMPONENTS DESCRIPTION .............. 22
PARTS LIST ............................................. 23
EXPLODED VIEW .................................... 30
Service Manual List
Title
Parts number
TK-8102
B51-8585-00
TK-8102
B51-8585-10
B51-8585-20
TK-8102
(This service manual)
Front glass
(B10-2753-03)
Key top
(K29-9065-01)
CONTENTS
PACKING ................................................. 31
ADJUSTMENT ........................................ 32
TERMINAL FUNCTION ........................... 37
PC BOARD
TX-RX UNIT (X57-6920-XX) ............... 40
SCHEMATIC DIAGRAM .......................... 44
BLOCK DIAGRAM ................................... 48
LEVEL DIAGRAM .................................... 50
SPECIFICATION ................... BACK COVER
Remarks
Destination
REVISED
M,M2,M3
REVISED II
M,M2,M3
© 2003-11 PRINTED IN JAPAN
B51-8585-20 ( N ) 258
Panel assy
(A62-0942-03)
TX-RX unit number
M
X57-6300-20
X57-6300-XX
X57-6920-XX
Display unit number
X54-3340-20
X54-3340-20
X54-3460-20

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  • Page 1: Table Of Contents

    B51-8585-20 ( N ) 258 This service manual applies to products with 50800001 or subsequent serial numbers. In terms of the products with the serial numbers earlier than 50800001, refer to the TK-8102 service manual as per part No. B51-8585-00 and B51-8585-10.

  • Page 2: General

    TK-8102 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-8102 OPERATING FEATURES 1-3. Auxiliary Programmable Functions 1. Controls and Functions • Emergency • Scan On/OFF 1-1. Front Panel • Key Lock • Talk Around • Monitor • Temporary Delete • None (no function) • AUX • Horn Alert • Scan + Temporary Delete 1-4.
  • Page 5 • Key lock 2. Operation Features Pressing this key causes the transceiver to accept entry of The TK-8102 is a UHF FM radio designed to operate in only the [Vol Up/Down]*, [Key lock], Microphone [PTT], conventional format. The programmable features are sum- [Monitor], [Emergency], and [Power] keys.
  • Page 6 TK-8102 OPERATING FEATURES ■ PTT ID 4. Scan Operating PTT ID provides a DTMF ANI or MSK ID to be sent with ■ SCAN start condition every time PTT (connect ID at beginning of transmission, dis- Two or more channels must be added to all channels that connect ID at end of transmission, or both).

  • Page 7: Audible User Feedback Tones

    TK-8102 OPERATING FEATURES ■ SP Unmute 7. Audible User Feedback Tones You can select the type of SP Unmute system for each The transceiver outputs various combinations of tones to channel. The selection is as follows. notify the user of the transceiver operating state.

  • Page 8: Realignment

    PC (IBM compatible). model type when it is written into the EEPROM. Data programming Used to read and write frequency data • Attach the interface cable, then change the TK-8102 to PC mode and other features to and from the radio. mode.

  • Page 9: Clone Mode

    1. Unscrew the five M2.6 screws (N87-2614 -46), then re- Note : move the shielding cover (F10-2491-03). Clone mode should enabled. 1. Turn the master TK-8102 power ON with the [1] key held M2.6 screws Shielding cover down. The TK-8102 [●] LED is turned on.
  • Page 10 TK-8102 REALIGNMENT 4. Place the KCT-39 sumi tube along the chassis and insert 7. Align the terminal B KCT -39 cable underneath the termi- the cable tie into the TX-RX PCB slot, as shown in the dia- nal A cable align the speaker cable (T07 -1082 -05) below gram below.
  • Page 11 TK-8102 REALIGNMENT 10. Connect the KCT-39 to the external accessory by insert- 6. Ignition Sense Cable (KCT-18) ing the crimp terminal ( ) into the square plug ( ), both The KCT-18 is an optional cable for enabling the ignition of which are supplied with the KCT-39.

  • Page 12: Installation

    TK-8102 INSTALLATION ■ Pins Connection 1. Optional Board Voice scrambler 12 pins lead wire 11 pins lead wire 1-1. Voice Scrambler Board Connection ■ Modification functions with connector (A) with connector (B) 1. Remove the cabinet and shielding cover from the trans- A-12 –...
  • Page 13 TK-8102 INSTALLATION 4. Connect the cable (E37 -1117 -05) to the topside of the ST- 2. SmarTrunk 909. 1. Unscrew the five M2.6 screws (N87-2614 -46), then re- Cable Connect point ST-909 move the shielding cover (F10-2491-03). M2.6 screws Shielding cover 5.
  • Page 14 • For the SmarTrunk option, cushion C and the insulation sheet are included in the package. ■ Setting With the KPG-70D • For TK-7102 & TK-8102 series, cushion A is not used. Select “External Devices” from the “Edit” menu and set Cushion A is replaced by cushion F.

  • Page 15: Disassembly For Repair

    TK-8102 DISASSEMBLY FOR REPAIR 1. When you remove the panel, turn the transceiver up side 4. Mount the display unit down. Detach the panel by lifting the tabs as shown be- To mount the display unit on the panel, follow the correct procedures shown to ensure easy display unit assembly low.

  • Page 16: Circuit Description

    TK-8102 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 17 TK-8102 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 18 TK-8102 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 19 CIRCUIT DESCRIPTION ■ Key Matrix Circuit Control Circuit The TK-8102 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 20 TK-8102 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 21: Semiconductor Data

    TK-8102 SEMICONDUCTOR DATA Microprocessor : 30622MAA-B87GP (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 22: Components Description

    TK-8102 COMPONENTS DESCRIPTION Display Unit (X54-3460-20) Ref. No. Parts name Description Ref. No. Parts name Description Q252,253 FET AF mute / Active while AFM is H Shift register for LED & MICBL control Q254 Digital transistor AF mute / Active while SPM is H...

  • Page 23: Parts List

    TK-8102 PARTS LIST ✽ New Parts. 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.
  • Page 24 TK-8102 PARTS LIST TX-RX UNIT (X57-6920-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C151 CK73GB1H182K CHIP C 1800PF C302,303 CK73GB1H102K CHIP C 1000PF C152 CK73GB1H392K CHIP C 3900PF C303...
  • Page 25 TK-8102 PARTS LIST TX-RX UNIT (X57-6920-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C401-403 CC73GCH1H101J CHIP C 100PF C504,505 CK73GB1H471K CHIP C 470PF C404 C92-0662-05 CHIP-TAN 15UF 6.3WV C507...
  • Page 26 TK-8102 PARTS LIST TX-RX UNIT (X57-6920-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation L302 L41-3385-08 SMALL FIXED INDUCTOR RK73GB1J152J CHIP R 1.5K 1/16W L303,304 L40-3381-86 SMALL FIXED INDUCTOR (0.33UH)
  • Page 27 TK-8102 PARTS LIST TX-RX UNIT (X57-6920-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R218 RK73GB1J823J CHIP R 1/16W R314 RK73GB1J222J CHIP R 2.2K 1/16W R219 RK73GB1J563J CHIP R 1/16W...
  • Page 28 TK-8102 PARTS LIST TX-RX UNIT (X57-6920-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R428 RK73GB1J473J CHIP R 1/16W D251 MA742 DIODE R429,430 RK73GB1J101J CHIP R 1/16W D301 MA742 DIODE...
  • Page 29 TK-8102 PARTS LIST TX-RX UNIT (X57-6920-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation Q407 2SJ243 Q408 KRX102U TRANSISTOR Q410,411 2SC5108(Y) TRANSISTOR Q440 2SC4617(S) TRANSISTOR Q500 2SC5108(Y) TRANSISTOR Q501,502 2SC3357...

  • Page 30: Exploded View

    TK-8102 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 Display unit IC502 IC252 TX-RX unit S/No. label Parts with the exploded numbers larger than 700 are not supplied.

  • Page 31: Packing

    TK-8102 PACKING 50 Screw set 46 Bracket (N99-0395-05) (J29-0662-03) 41 Protection bag (H25-0103-04) 12 DC cord (E30-3339-05) 23 Fuse (6*30) (F51-0016-05) x 2 38 Inner packing case (H02-0617-02) 7 Instruction manual (B62-1389-10) 39 Polystyrene foamed fixture (H10-6636-13) 42 Protection bag...

  • Page 32: Adjustment

    TK-8102 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 400 to 520MHz (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-8102 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- Power Display adjust the transceiver. Volume up/down Speaker • AF PA IC (IC252) How to mounting the IC252.
  • Page 34 TK-8102 ADJUSTMENT Test Frequency (MHz) Channel 1 : Center 470.100 470.050 502.600 502.550 415.100 415.050 2 : Low 450.100 450.050 485.100 485.050 400.100 400.050 3 : High 489.900 489.950 519.900 519.950 429.900 429.950 470.000 470.000 498.500 498.500 415.000 415.000 470.200 470.200...
  • Page 35 TK-8102 ADJUSTMENT Receiver Section Measurement Adjustment Specifications/ Item Condition Test equipment Terminal Parts Method Remarks 1. Sensitivity 1) CH : RX low (Wide/Narrow) Check SINAD CH : RX center (Wide/Narrow) Oscilloscope EXT. SP : 12dB or higher CH : RX high (Wide/Narrow) AF V.M...
  • Page 36 TK-8102 ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Test equipment Terminal Parts Method Remarks 5. DQT 1) CH : TX low (Wide) Modulation analyzer ANT PC key Adjust the waveform as below balance CH : TX center (Wide/Narrow) or Linear detector...

  • Page 37: Terminal Function

    TK-8102 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 38: Display Unit (X54-3460-20)

    TK-8102 PC BOARD DISPLAY UNIT (X54-3460-20) Component side view (J72-0916-09) POWER DOWN DISPLAY UNIT (X54-3460-20) Foil side view (J72-0916-09) HOOK...
  • Page 39 TK-8102 PC BOARD DISPLAY UNIT (X54-3460-20) Component side view (J72-0916-09) J72-0916-09 Ref. No. Address MONI PROG Component side Layer 1 Layer 2 Foil side DISPLAY UNIT (X54-3460-20) Foil side view (J72-0916-09) Ref. No. Address KMO2 KMI4 KMO1 KMI3 KMI1 KMI2...

  • Page 40: Tx-Rx Unit (X57-6920-Xx)

    TK-8102 TK-8102 PC BOARD PC BOARD DISPLAY UNIT (X54-3460-20) Component side view (J72-0916-09) DISPLAY UNIT (X54-3460-20) Component side view (J72-0916-09) J72-0916-09 Ref. No. Address MONI POWER DOWN PROG Component side Layer 1 Layer 2 Foil side DISPLAY UNIT (X54-3460-20) Foil side view (J72-0916-09) DISPLAY UNIT (X54-3460-20) Foil side view (J72-0916-09) Ref.
  • Page 41 TK-8102 PC BOARD TX-RX UNIT (X57-6920-XX) -22 : M -23 : M2 -24 : M3 Component side view (J72-0918-09) EXT. SP R272 D251 C272 R274 R275 R273 C271 TEMP2 CNVSS IC252 R101 R271 C276 POWER C270 R270 RESET Q254 R267...
  • Page 42 TK-8102 PC BOARD TX-RX UNIT (X57-6920-XX) -22 : M -23 : M2 -24 : M3 Component side view (J72-0918-09) IC502 C611 C612 C605 C603 C604 D608 R605 D606 C614 C573 R606 TEMP1 R532 L505 R531 R380 R528 C391 C559 C539...
  • Page 43 TK-8102 TK-8102 PC BOARD PC BOARD TX-RX UNIT (X57-6920-XX) -22 : M -23 : M2 -24 : M3 TX-RX UNIT (X57-6920-XX) -22 : M -23 : M2 -24 : M3 Component side view (J72-0918-09) Component side view (J72-0918-09) EXT. SP...

  • Page 44: Schematic Diagram

    TK-8102 PC BOARD TX-RX UNIT (X57-6920-XX) -22 : M -23 : M2 -24 : M3 Foil side view (J72-0918-09) R800 L603 D605 C601 C606 D604 L601 L361 C390 C537 C385 D354 D355 L359 C389 CN301 CN503 C382 C383 D353 R374...
  • Page 45 TK-8102 PC BOARD TX-RX UNIT (X57-6920-XX) -22 : M -23 : M2 -24 : M3 Foil side view (J72-0918-09) C283 R281 R535 R526 C531 R524 C523 CN502 CN501 C516 L504 R523 R517 R520 Q502 R103 R102 C520 C540 C279 D502...
  • Page 46 TK-8102 TK-8102 PC BOARD PC BOARD TX-RX UNIT (X57-6920-XX) -22 : M -23 : M2 -24 : M3 TX-RX UNIT (X57-6920-XX) -22 : M -23 : M2 -24 : M3 Foil side view (J72-0918-09) Foil side view (J72-0918-09) C283 R281...
  • Page 47 TK-8102 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6920-XX) D403,404 RX VCO C430 Q402,403 RX VCO R:6.6V R:1.0V CHARGE PUMP Q405 L406 C426 L408 D404 2SK508NV(K52) C432 R403 R414 R402 MA2S304 0.5p VOTAGE R401 DROPPED D402 R410 Q402 HZU5ALL R418 R419 R421 L405...

  • Page 48: Block Diagram

    TK-8102 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6920-XX) T:6.0V PRE DRIVE AMP PRE DRIVE AMP 6.1V Q502 RF AMP T:5.6V T:6.8V T:1.10V T:7.3V T:0.29V RF SWITCH BUFFER AMP 4.87V Q500 Q501 C523 7.2V 2SC3357 Q411 C502 C516 2SC5108(Y) C509 2SC3357 Q410 1.51V...
  • Page 49 TK-8102 SCHEMATIC DIAGRAM IC502 POWER MODULE RA30H4452M-31 TX-RX UNIT (X57-6920-XX) R800 C609 C612 R92-1061-05 ANT SW D602 R538 MA4PH633 C602 L602 L603 T:12.9V 1000p 1.5T 1.5T T:0.99V D606,607 APC VOLTAGE D1-3 DETECT SURGE ABSORPTION VOLTAGE PROTECTION D606 D607 MA742 MA742 T:7.9V...
  • Page 50 TK-8102 SCHEMATIC DIAGRAM DISPLAY UNIT (X54-3460-20) D1-4 Q9,10 KRA225S KEY BACKLIT 3.7V KEY BACKLIT SWITCH 13.46V 2.7k KRC102S B30-2238-05 B30-2238-05 NORMAL AMBER 3.7V 2.7k B30-2238-05 B30-2238-05 2.2k 4.23V MICBL MICBL HOOK HOOK MONITOR KEY LIGHT 0.17V 11.4V SHIFT REGISTER FOR 2.7k...
  • Page 51 TX-RX UNIT (X57-6920-XX) DISPLAY UNIT (X54-3460-20) IC502 PRE DRIVE AMP PRE DRIVE AMP T:6.0V POWER MODULE D403,404 6.1V Q502 RA30H4452M-31 RX VCO C430 BUFFER AMP RF AMP 4.87V RF SWITCH T:5.6V Q500 T:6.8V T:1.10V Q501 T:7.3V T:0.29V C523 Q402,403 RX VCO 7.2V 2SC3357 R:1.0V...
  • Page 52 TK-8102 BLOCK DIAGRAM TX-RX UNIT X57-692*-** DISPLAY UNIT X54-3460-20 Q404 2SC4649(N,P) POWER FNC1~FNC8 2SK508 Q402 IC401 PTT(TXD) CHARGE 2SA1832(GR) MB15A02 PUMP PLLE HOOK(RXD) LOOP Q407 DATAI PLL IC FILTER 2SJ243 DETO TXAFI 16.8MHz CHARGE Q403 TXAFO PUMP 2SC4738(GR) 16.8MHz EMGMIC...
  • Page 53 TK-8102 BLOCK DIAGRAM IC502 RA30H4452M-31 : M,M2 RA30H4047M-31 : M3 POWER MODULE Q501 Q502 Q405 Q410 Q411 Q500 D602 2SC3357 2SK3357 2SK508NV(K52) 2SC5108(Y) 2SC5108(Y) MA4PH633 2SC5108(Y) DRIVE BUFF DRIVE ANT SW Q408 D409 Q407 KRX102U DAN235E 2SJ243 D607 POW. D606 POW.

  • Page 54: Level Diagram

    TK-8102 LEVEL DIAGRAM Receiver Section Center Frequency 49.95MHz 450kHz W : –85.0dBm N : –80.5dBm W : –121.0dBm W : –119.0dBm W : –105.5dBm W : –106.0dBm W : –117.5dBm W : –103.0dBm /CF2 N : –120.5dBm N : –118.5dBm N : –105.5dBm...
  • Page 55 TK-8102 LEVEL DIAGRAM 450kHz Audio Frequency W : –93.0dBm N : –91.0dBm /CF2 0.34Vrms 0.33Vrms 0.27Vrms 0.31Vrms 0.33Vrms 10mVrms 0.55Vrms 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 56: Specification

    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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