Kenwood TK-880 Service Manual
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Kenwood TK-880 Service Manual

Kenwood TK-880 Service Manual

Uhf fm transceiver
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Document Copyrights
Copyright 2006 by Kenwood Corporation. All rights reserved.
No part of this manual may be reproduced, translated, distributed, or transmitted in any
form or by any means, electronic, mechanical, photocopying, recording, or otherwise, for
any purpose without the prior written permission of Kenwood.
Disclaimer
While every precaution has been taken in the preparation of this manual, Kenwood
assumes no responsibility for errors or omissions. Neither is any liability assumed for
damages resulting from the use of the information contained herein. Kenwood reserves
the right to make changes to any products herein at any time for improvement purposes.

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Summary of Contents for Kenwood TK-880

  • Page 1 Kenwood. Disclaimer While every precaution has been taken in the preparation of this manual, Kenwood assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein. Kenwood reserves...

  • Page 2: Table Of Contents

    UHF FM TRANSCEIVER TK-880 SERVICE MANUAL REVISED E·E3 version © 2000-10 PRINTED IN JAPAN B51-8524-10 ( N ) 569 This Service Manual was revised based on the service manual as per parts No. B51-8524-00, in order to include new variants with the following destination codes : E3.

  • Page 3: General

    TK-880 GENERAL 3. PLANNING THE INSTALLATION INTRODUCTION 3-1. General SCOPE OF THIS MANUAL Inspect the vehicle and determine how and where the This manual is intended for use by experienced techni- radio antenna and accessories will be mounted. cians familiar with similar types of commercial grade com- Plan cable runs for protection against pinching or crush- munications equipment.

  • Page 4: Operating Features

    4. INSTALLATION PLANNING – CONTROL STATIONS 1. Operation Features 4-1. Antenna system The TK-880 is a UHF FM radio designed in both 5-tone Control station. The antenna system selection depends model and DTMF/2-tone/DMS model. The programmable on many factors and is beyond the scope of this manual.

  • Page 5: Operating Features

    TK-880 OPERATING FEATURES 2-2. Programmable Keys Channel Name The FPU (KPG-60D) enables programmable keys to se- Press this key to switch between the "Channel name" lect the following functions. and "Grp #/Ch #" for the display. If no channel name is pro-...
  • Page 6 TK-880 OPERATING FEATURES Group Up/Down Operator Selectable Tone When this key is pressed each time, the group number to When this key is pressed, the "OST" appears and encode/ be selected is increased/decreased and repeats if held for decode QT/DQT is switched to the OST tone pair. If one second or longer.
  • Page 7 TK-880 OPERATING FEATURES Receive Entry (5-tone) Selcall List Press [Receive entry] key to enter the desired Selcall Press [Selcall list] key to enter Selcall list mode. code you want to receive. This function can be activated • 5-tone only when "RX address" is set to the channel and "selectable receive digit"...
  • Page 8 TK-880 OPERATING FEATURES Status Entry (5-tone) Function Table It allows the operator to input the status and transmit it to Function DTMF/2-tone/DMS 5-tone the base station. None Both TX address and "Selectable status digit" must be Auto dial programmed to perform the operation. Press [Status entry] Auto dial programming key to access Status entry mode.

  • Page 9: Scan Operating

    TK-880 OPERATING FEATURES 2-3. Front Panel Displays and Indicators Handset indicator Sub display This icon is not used this transceiver. Displays the system, channel and group numbers. Also MAIL indicator displays various functions, such as TA. Flashes when a status message (5-tone or DMS) is re- P (Priority) indicator ceived.
  • Page 10 TK-880 OPERATING FEATURES Scan channel types Scan end 1) Priority channel is the most important channel for the When you reactivate the key programmed to the scan scan, and always detects a signal during scan and when function during scan mode, the scan ends.
  • Page 11 TK-880 OPERATING FEATURES Com port Radio password • Com 0 When the password is set in the transceiver, user can not use the transceiver unless enter the correct password. This function selects the external serila port function at This code can be up to 6 digits from 0 to 9 and input with the microphone jack (TXD/RXD).
  • Page 12 It is possible to use individual call, group call, stun, kill. The Alphanumeric Two-way Paging Function (DMS) is a Stun and kill are used with DTMF only. Kenwood proprietary protocol. It enables a variety of paging If the option signalling matches, a predetermined action functions.
  • Page 13 TK-880 OPERATING FEATURES Selective Call (SELCALL) Short Message This is a voice call to a particular individual or group of A maximum of 48 characters can be sent (External equip- stations. ment is required). Received Short Messages will be dis- played in the same manner as a Status Message.
  • Page 14 2) MAP HEADER KW1 ($PKLDS) Data TX Modulation Delay Time is the amount of time This is a Kenwood original sentence which consists of from the beginning of transmission to the beginning of a “$GPGLL + Fleet + ID + Status”. This item should be set data modulation.
  • Page 15 TK-880 OPERATING FEATURES Monitor Function Selectable Selcall Digit You can select either QT/DQT or 5-tone decoding to be Select the check box to change selcall code (maximum 8 canceled when [Monitor] or [Monitor momentary] key is digits) manually when transmitting encode code. You can- pressed.

  • Page 16: Audible User Feedback Tones

    TK-880 OPERATING FEATURES Decode Code 8. Audible User Feedback Tones When "Special setting" is disabled, you can select the The transceiver outputs various combinations of tones to decode code setting from #1 to #8. The transceiver tries to notify the user of the transceiver operating state. The main decode the selected decode code setting (maximum 8 dif- tones are listed below.

  • Page 17: Realignment

    PC test mode Used to check the radio using the PC. • Change the TK-880 to PC mode, then attach the interface This feature is included in the FPU. cable.

  • Page 18: Programming With Ibm Pc

    KPG-60D. 3. Set the firmware to be updated by File name item. 4. Turn the TK-880 Power ON with the [A] switch held down. Hold the switch down until the display changes to "PROG 57600". When "PROG 57600" appears, release TX-RX unit B/2 your finger from the switch.
  • Page 19 TK-880 REALIGNMENT 7-2. Channel Setting Mode 7-3. Flow Chart Each channel can be setup in its action mode by using Self programming the panel keys. mode • Pressing [ ] while "SELF PROG" is displayed will change Channel setting to channel setting mode.

  • Page 20: Installation

    TK-880 INSTALLATION 1-2. KCT-19 Accessory Port Function 1. Accessory Connection Cable No. (A) No. (B,C,D,E) Name Function Note (KCT-19 : Option) External hook input The KCT-19 is an accessory connection cable for con- Microphone ground necting external equipment. The connector has 15 pins and Speaker audio mute input the necessary signal lines are selected for use.
  • Page 21 TK-880 INSTALLATION 1-3. Data Equipment Connection 2. Accessory Terminal (TX-RX Unit) The jumpers must be set to either one for each function. 2-1. External Connector Accessory Terminal Method Otherwise, the radio will not work properly. Connector Function ME/AM name R12 (0Ω) R167 (0Ω) Function / Default O Detect signal output.
  • Page 22 TK-880 INSTALLATION Schematic diagram PC board view Connector Function name Name I/O Function Name Unit Serial data input 1. "Com1" port CODE3 Option code 1 (for voice TX-RX must be select "DATA"/"GPS" scrambler code 3) function in the KPG-60D. CODE4...
  • Page 23 2. Set jumper resistors (0Ω) R151 and R152 of the TX-RX 5-2. Voice Scrambler Board Connection unit (A/2) as shown in Table 1. • Modification 1. Remove the upper half of the case of the TK-880. Operation when KCT-18 is connected R151 R152 2.
  • Page 24 TK-880 INSTALLATION Scrambler board TK-880 6. PA/HA Unit (KAP-1 : Option) Code 4 (C4) (TX-RX PCB) 6-1. Installing the KAP-1 in the Transceiver Code 3 (C3) (TX-RX PCB) The Horn Alert (max. 2A drive) and Public Address func- Code 2 (C2)
  • Page 25 TK-880 INSTALLATION 7. Fitting the Control Panel Upside Down The TK-880 control panel can be fitted upside down, so the transceiver can be mounted with its internal speaker (in the upper half of the case) facing down in your car.

  • Page 26: External Speaker

    TK-880 INSTALLATION 8-2. KES-4 : Option 6. Rotate the control panel 180 degrees and mount it on the transceiver. Refit the two halves of the case to complete The KES-4 is an external speaker used with the acces- installation. (Fig. 11) sory connection cable.

  • Page 27: Circuit Description

    TK-880 CIRCUIT DESCRIPTION The low-noise amplifier (LNA) (Q201) uses a bipolar tran- Frequency Configuration sistor to achieve wide-band and low-distortion amplification. The TX-RX unit incorporates a VCO, based on a fractional The signal passes through a BPF and is down-converted...
  • Page 28 VCO/PLL Circuit the D/A converter (IC5). The AFO output level is adjusted by The TK-880 has a VCO for the transmitter and a VCO for the D/A converter. The signal output from the D/A converter the receiver in a sub-unit (A-1). They are housed in a solid...
  • Page 29 TK-880 CIRCUIT DESCRIPTION Unlock Circuit Q17 turns the PC signal on or off using 8T so that the circuit works only during transmission. With stability at low During reception, the TR signal goes high, the KEY signal power in mind, Q29 turns off to optimize the detection volt- goes low, and Q10 turns on.
  • Page 30 Key Matrix Circuit through two low-pass filters of IC501, goes to LSDI of the The TK-880 front panel has ten keys. Each of them is CPU (IC511) to decode QT, DQT. The DTMF signal is de- connected to a cross point of a matrix of the KEY1 to KEY7 coded by a dedicated IC (IC507) and the resulting signal is ports of the microprocessor.
  • Page 31 TK-880 CIRCUIT DESCRIPTION Horn Control Power Supply Circuit The horn switch, consisting of Q4, Q5, and Q6, controls When the POWER switch on the control unit is pressed, the horn relay. It is supplied by the dealer to provide the the PSW signal goes low.

  • Page 32: Semiconductor Data

    TK-880 SEMICONDUCTOR DATA Microprocessor : 30620M8-394GP (IC511) Terminal function Pin No. Name Function Pin No. Name Function LSDOUT Low speed data output. PLL IC data strobe output. HSDOUT High speed data output. Flash memory chip enable. HSDIN High speed data input.
  • Page 33 TK-880 SEMICONDUCTOR DATA / DESCRIPTION OF COMPONENTS Terminal function (IC8) DESCRIPTION OF COMPONENTS Pin No. Port Name Function Strobe TX-RX Unit (A/2) DATA Ref. No. Use / Function Operation / Condition Clock DC amp FC, TCXO control Audio mute 1. H : Mute, L : Unmute...

  • Page 34: Description Of Components

    TK-880 DESCRIPTION OF COMPONENTS Ref. No. Use / Function Operation / Condition Ref. No. Use / Function Operation / Condition SB switch Q28 on time on IC504 Audio processor Compander, MIC amplifier, ALC, SB SW control Q30 on and Q31 off time on...

  • Page 35: Parts List

    TK-880 PARTS LIST New Parts. indicates safety critical components. Destination TX-RX unit PLL/VCO unit SUB unit Parts without Parts No. are not supplied. X57-6152-70 X58-4722-70 – Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert.
  • Page 36 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CC73GCH1H151J CHIP C 150PF C145,146 CK73GB1H471K CHIP C 470PF C92-0719-05 ELECTRO 47UF 25WV C147 CC73FCH1H0R5B CHIP C 0.5PF...
  • Page 37 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C261 CK73GB1C104K CHIP C 0.10UF C422 CK73GB1H102K CHIP C 1000PF C262 C92-0719-05 ELECTROL 47UF 25WV C423...
  • Page 38 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C567 CK73GB1C273K CHIP C 0.027UF C905 CC73GCH1H101J CHIP C 100PF C568 C92-0712-05 CHIP-TAN 22UF 6.3WV C907...
  • Page 39 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation L220 L34-4478-05 AIR-CORE COIL R92-1252-05 CHIP R 0 OHM L221 L34-1195-05 AIR-CORE COIL RK73GB1J101J CHIP R...
  • Page 40 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R127 RK73FB2A273J CHIP R 1/10W R231 RK73GB1J103J CHIP R 1/16W R128 RK73GB1J223J CHIP R 1/16W R232...
  • Page 41 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R504 RK73GB1J184J CHIP R 180K 1/16W R579 R92-1252-05 CHIP R 0 OHM R505 RK73GB1J102J CHIP R 1.0K...
  • Page 42 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R701 RK73GB1J102J CHIP R 1.0K 1/16W D503-505 HSB123 DIODE R702 RK73GB1J101J CHIP R 1/16W D507 DAN202U...
  • Page 43 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-70) PLL/VCO (X58-4722-XX) SUB UNIT (X58-4850-10) : E3 Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation Q25,26 DTA114EE DIGITAL TRANSISTOR TC109 C05-0384-05 CERAMIC TRIMMER CAP (10P)

  • Page 44: Exploded View

    TK-880 EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied.

  • Page 45: Packing

    TK-880 PACKING 36 Protection bag 37 Protection bag (H25-0103-04) (H25-0720-04) 5 Cap (B09-0235-05) 10 DC cord (E30-3339-05) : E (E30-3438-05) : E3 21 Fuse (F51-0016-05) : E (F52-0006-05) : E3 40 Bracket 9 Rating label (J29-0627-23) (B42-5999-14) : E3 35 Inner packing case...

  • Page 46: Adjustment

    TK-880 ADJUSTMENT Frequency and Signalling Test Mode The set has been adjusted for the frequencies shown in Test Mode Operating Features the following table. When required, re-adjust them follow- This transceiver has a test mode. To enter test mode, ing the adjustment procedure to obtain the frequencies you press [B] key and turn power on.
  • Page 47 TK-880 ADJUSTMENT • Tuning flow Press [A], now in tuning mode. Use [C] button to write tuning data through tuning modes, and [Channel Up/Down] Note : You cannot configure semi-wide for E3-type. to adjust tuning requirements (1 to 256 appears on LCD).
  • Page 48 TK-880 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 400 to 470MHz (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 49: Pll/Vco (X58-4722-Xx)

    Repair Jig (Chassis) The tuning data (Deviation, Squelch, etc.) for the Use jig (Part No. : A10-4010-02) for repairing the TK-880. EEPROM, is stored in memory. When parts are changed, The jig facilitates the voltage check when the voltage on the readjust the transceiver.
  • Page 50 TK-880 ADJUSTMENT Receiver Section Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 1. Discriminator 1) Set test mode Rear TX-RX L6 AF output voltage CH : CH1 - Sig1 panel (A/2) maximum. SSG output : –53dBm AF VTVM AF : 1.4V/4Ω...
  • Page 51 TK-880 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 5. Squelch 1) Set test mode Rear (Tight) Select “nL SQLT” in tuning mode. panel Set “nL SQLT 255” AF VTVM Distortion (EXT.SP) 2) “nC SQLT”...
  • Page 52 TK-880 ADJUSTMENT Transmitter Section Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 1. Frequency 1) Set test mode Power meter Rear Check 470.100MHz±100Hz E Select “FREQ” in tuning mode. F. counter panel 419.100MHz±100Hz E3 PTT : ON ±...
  • Page 53 TK-880 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 7. Maximum 1) Set test mode Power meter Rear 4.1kHz (Wide 5k) +0Hz, –50Hz deviation Connect AG to the MIC Deviation panel 3.3kHz (Wide 4k) (Wide 5k/Wide 4k/Narrow) terminal.
  • Page 54 TK-880 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 0.2kHz (Wide 5k/Wide 4k) 11. DTMF 1) Set test mode Power meter Rear 3.0kHz (Wide 5k) ± 0.1kHz (Narrow) deviation Select “n DTMF” in tuning mode. Deviation panel 2.4kHz (Wide 4k)

  • Page 55: Sub Unit (X58-4850-10) : E3

    TK-880 TK-880 PC BOARD VIEWS PLL/VCO (X58-4722-XX) -70 : E -71 : E3 SUB UNIT (X58-4850-10) : E3 Component side view Component side view J72-0733-02 9C IN C115 C119 CN101 L105 L109 L103 R104 C104 R119 C117 C122 L107 Q105...
  • Page 56 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6152-70) (A/2) Component side view : E Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Q403 D213 IC10 D214 IC11 Q203 D203 D215 Component side...
  • Page 57 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6152-70) (A/2) Foil side view : E Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address IC12 IC13 Q201 10R...
  • Page 58 TK-880 PC BOARD VIEW Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address IC14 Q203 TX-RX UNIT (X57-6152-70) (A/2) Componebt side view + Foil side : E IC15 Q204 Ref. No. Address Ref. No. Address Ref.
  • Page 59 TK-880 PC BOARD VIEWS TX-RX UNIT (X57-6152-70) (B/2) Component side view : E J72-0725-12 B/2 D512 R514 D517 R710 R517 C712 R510 C527 C710 C518 C583 R526 R713 IC710 L507 R525 R682 IC502 C524 R572 D511 C592 IC501 IC508 R531...
  • Page 60 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6152-70) (B/2) Component side view + Foil side : E J72-0725-12 B/2 D512 R520 R514 D517 R710 C607 R517 C712 MPTT C516 R518 R510 C515 C527 C710 C518 C583 R525 RXAO R680 R521 R526...
  • Page 61 TK-880 PC BOARD VIEW Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address TX-RX UNIT (X57-6372-70) (A/2) Component side view : E3 Q403 IC10 IC11 Q203 D211 IC14 Q300 D902 Component side IC300 Q301...
  • Page 62 TK-880 PC BOARD VIEW Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address TX-RX UNIT (X57-6372-70) (A/2) Foil side view : E3 IC13 IC15 Q15 12K IC200 12Q...
  • Page 63 TK-880 PC BOARD VIEW Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address TX-RX UNIT (X57-6372-70) (A/2) Component side view + Foil side : E3...
  • Page 64 TK-880 PC BOARD VIEWS TX-RX UNIT (X57-6372-70) (B/2) Component side view : E3 J72-0782-02 B/2 D512 R514 D517 R710 R517 C712 R510 C710 C527 C518 C583 R526 R713 IC710 L507 R525 R682 IC502 C524 R572 D511 C592 IC501 IC508 R531...
  • Page 65 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6372-70) (B/2) Component side view + Foil side : E3 J72-0782-02 B/2 D512 R520 R514 D517 R710 C607 R517 C712 MPTT C516 R518 R510 C515 C527 C710 C518 C583 R525 R680 R521 RXAO R526...

  • Page 66: Schematic Diagram (E)

    TK-880 SCHEMATIC DIAGRAM (E) Note : Components marked with a dot (·) are parts of patterun 1.
  • Page 67 TK-880 Note : Components marked with a dot (·) are parts of patterun 1. SCHEMATIC DIAGRAM (E)

  • Page 68: Schematic Diagram (E3)

    TK-880 Note : Components marked with a dot (·) are parts of patterun 1. SCHEMATIC DIAGRAM (E3)
  • Page 69 TK-880 Note : Components marked with a dot (·) are parts of patterun 1. SCHEMATIC DIAGRAM (E3)

  • Page 70: Block Diagram

    TK-880 TK-880 TK-880 BLOCK DIAGRAM...

  • Page 71: Level Diagram

    TK-880 TK-880 LEVEL DIAGRAM Receiver Section W 5k –93.5dBm W 5k –99.5dBm W 4k –92.5dBm W 4k –98.5dBm –88.0dBm –95.0dBm TK-880 (E) W 5k/W4k/N W 5k/W4k/N W 5k/W4k/N W 5k/W4k/N W 5k/W4k/N –118.0dBm –122.0dBm –116.0dBm –116.0dBm –108.0dBm –121.0dBm –109.0dBm 62mVrms...

  • Page 72: Terminal Function

    TK-880 TERMINAL FUNCTION CN7 (TX-RX Unit) ← → CN502 (Control Unit) CN101 (VCO) ← → TX-RX Unit Pin No. Name Function Pin No. Name Function Wide/Narrow. H : Wide Switched transmit input. H : Transmit TX/RX switch. H : Receive RF output.

  • Page 73: Specifications

    TK-880 SPECIFICATIONS GENERAL Frequency Range ........ E : 440 to 470MHz E3 : 406 to 432MHz (TX), 406 to 450MHz (RX) Number of Channels ......Maximum 250 channels Channel Spacing ......... Narrow : 12.5kHz Wide 4k : 20kHz (E-type only) Wide 5k : 25kHz Input Voltage ........
  • Page 74 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.

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