Kenwood TK-880 Service Manual

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Service manual (74 pages)

Programming instructions manual (10 pages)

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Page 1: Table Of Contents
UHF FM TRANSCEIVER TK-880 SERVICE MANUAL REVISED E·E3·E4 versions © 2002-2 PRINTED IN JAPAN B51-8524-20 ( N ) 387 This Service Manual was revised based on the service manual as per parts No. B51-8524-10, in order to include new variants with the following destination codes : E4.
Page 2: 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 3 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 4: 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 5 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 en- be selected is increased/decreased and repeats if held for code/decode QT/DQT is switched to the OST tone pair. If one second or longer.
Page 6 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 “select- able receive digit”...
Page 7 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] key to access Status entry mode.
Page 8 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 9 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 10 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 11 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 12 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 13 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 14 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 15: 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 16: Realignment
• Change the TK-880 to PC mode, then attach the interface cable. PC test mode Used to check the radio using the PC.
Page 17: Self Programming Mode
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) : Control section your finger from the switch.
Page 18 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 Channel setting change to channel setting mode.
Page 19: 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 20 TK-880 INSTALLATION 1-3. Data Equipment Connection 2. Accessory Terminal (TX-RX Unit A/2) 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)
Page 21 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 (A/2) must be select “DATA”/“GPS” scrambler code 3) function in the KPG-60D.
Page 22 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 23 TK-880 INSTALLATION Scrambler board TK-880 6. PA/HA Unit (KAP-1 : Option) Code 4 (C4) (TX-RX A/2 PCB) 6-1. Installing the KAP-1 in the Transceiver Code 3 (C3) (TX-RX A/2 PCB) The Horn Alert (max. 2A drive) and Public Address func-...
Page 24 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 25: 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 26: 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 (A/2) incorporates a VCO, based on a frac- The signal passes through a BPF and is down-converted...
Page 27 VCO/PLL Circuit unit (A/2) is input to the D/A converter (IC5). The AFO out- The TK-880 has a VCO for the transmitter and a VCO for put level is adjusted by the D/A converter. The signal output the receiver in a sub-unit (A1). They are housed in a solid...
Page 28 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 29 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 30 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 31: Semiconductor Data
TK-880 SEMICONDUCTOR DATA Microprocessor : 30620M8A-2K9GP (TX-RX Unit B/2 : Control Section IC511) Terminal function Pin No. Name Function Pin No. Name Function LSDOUT Low speed data output. RFCLK Common clock output. (TX-RX unit A/2) HSDOUT High speed data output.
Page 32 TK-880 SEMICONDUCTOR DATA Shift Register : BU4094BCFV Terminal function (TX-RX unit B/2 IC508) Terminal function (TX-RX unit A/2 IC7) Pin No. Port Name Function Pin No. Port Name Function Strobe Strobe Data Data Clock Clock LEDR Red LED. H : ON, L : OFF HORN Horn alert.
Page 33: Description Of Components
TK-880 DESCRIPTION OF COMPONENTS TX-RX Unit (A/2) Ref. No. Use / Function Operation / Condition Ref. No. Use / Function Operation / Condition PC switch TX (8T) time on DC amp FC, TCXO control DET mute KEY “H” time on...
Page 34: Vco Unit
TK-880 DESCRIPTION OF COMPONENTS Ref. No. Use / Function Operation / Condition Ref. No. Use / Function Operation / Condition Power detection Q507 Inverter PA2 H/L switch Protection Q508 LED switch LG “H” time on, Busy time green on Power detection...
Page 35: Parts List
Les articles non mentionnes dans le Parts No. ne sont pas fournis. X57-6372-70 X58-4722-71 X58-4850-10 Teile ohne Parts No. werden nicht geliefert. X57-6152-71 X58-4722-70 X58-4850-10 TK-880, TX-RX UNIT (X57-6XX2-7X) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No.
Page 36 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-7X) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CK73GB1C104K CHIP C 0.10UF C147 CC73FCH1H0R5B CHIP C 0.5PF C72,73 CK73GB1H102K CHIP C 1000PF C148 CK73GB1H102K...
Page 37 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-7X) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C261 CK73GB1C104K CHIP C 0.10UF C409 CC73GCH1H220J CHIP C 22PF C262 C92-0719-05 ELECTRO 47UF 25WV C414...
Page 38 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-7X) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C565 CK73GB1H102K CHIP C 1000PF C902 CC73GCH1H360J CHIP C 36PF C566 CC73GCH1H101J CHIP C 100PF C903...
Page 39 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-7X) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation L207 L79-1750-05 HELICAL BLOCK E,E4 RK73GB1J394J CHIP R 390K 1/16W L208 L40-1875-92 SMALL FIXED INDUCTOR (18NH)
Page 40 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-7X) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R107 RK73GB1J473J CHIP R 1/16W R206 RK73FB2A102J CHIP R 1.0K 1/10W R109 R92-0670-05 CHIP R 0 OHM...
Page 41 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-7X) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R319 RK73GB1J102J CHIP R 1.0K 1/16W R548 RK73GB1J183J CHIP R 1/16W R320 R92-1252-05 CHIP R 0 OHM J...
Page 42 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-7X) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R644 R92-1368-05 CHIP R 0 OHM MINISMDC075-02 VARISTOR R645 RK73GB1J472J CHIP R 4.7K 1/16W 1SS355 DIODE...
Page 43 TK-880 PARTS LIST TX-RX UNIT (X57-6XX2-7X) PLL/VCO (X58-4722-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation 2SK1824 C113 CC73GCH1H0R5B CHIP C 0.5PF 2SC2412K(S) TRANSISTOR C114 CC73GCH1H050B CHIP C 5.0PF DTD114EK...
Page 44 TK-880 PARTS LIST SUB UNIT (X58-4850-10) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation SUB UNIT (X58-4850-10) CK73GB1C104K CHIP C 0.10UF C92-0505-05 CHIP-TAN 10UF 16WV RK73GB1J103J CHIP R 1/16W R92-1252-05...
Page 45: Exploded View
TK-880 EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied.
Page 46: Packing
TK-880 PACKING 36 Protection bag 37 Protection bag (H25-0103-04) (H25-0720-04) 5 Cap (B09-0235-05) 10 DC cord (E30-3438-05) 21 Fuse (F52-0006-05) 40 Bracket 9 Rating label (J29-0627-23) (B42-5999-14) : E3 35 Inner packing case (H12-1391-03) 44 Screw set (N99-0395-05) 34 Polystyrene foamed fixture (B)
Page 47: 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 48 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 49 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 50: 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 51 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 52 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 53 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,E4 Select “FREQ” in tuning mode. F. counter panel 419.100MHz±100Hz E3 PTT : ON ±...
Page 54 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 55 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 56: Sub Unit (X58-4850-10)
TK-880 TK-880 PC BOARD VIEWS PLL/VCO (X58-4722-XX) -70 : E,E4 -71 : E3 SUB UNIT (X58-4850-10) Component side view (J72-0733-02) Component side view (J72-0785-02) J72-0733-02 C115 9C IN C119 CN101 L105 L109 L103 R104 C104 R119 C117 C122 L107 Q105...
Page 57 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6152-XX) (A/2) -70 : E -71 : E4 Component side view (J72-0725-12 A/2) Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Q403 D213 IC10...
Page 58 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6152-XX) (A/2) -70 : E -71 : E4 Foil side view (J72-0725-12 A/2) Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref.
Page 59 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6152-XX) (A/2) -70 : E -71 : E4 Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address IC14 Q204 Component side view + Foil side (J72-0725-12 A/2) IC15 Q205 Ref.
Page 60 TK-880 PC BOARD VIEWS TX-RX UNIT (X57-6152-XX) (B/2) -70 : E -71 : E4 Component side view (J72-0725-12 B/2) J72-0725-12 B/2 D512 R514 D517 R710 R517 C712 R510 C527 C710 C518 C583 R526 R713 L507 R525 IC710 R682 IC502 C524...
Page 61 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6152-XX) (B/2) -70 : E -71 : E4 Component side view + Foil side (J72-0725-12 B/2) J72-0725-12 B/2 D512 R520 R514 D517 R710 C607 C712 R517 MPTT C516 R518 R510 C515 C527 C710 C518...
Page 62 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 (J72-0782-02 A/2) Q403 IC10 IC11 Q203 D211 IC14 Q300 D902 Component side...
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 TX-RX UNIT (X57-6372-70) (A/2) Foil side view : E3 (J72-0782-02 A/2) IC13 IC15 Q15 12K...
Page 64 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6372-70) (A/2) Component side view + Foil side : E3 Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address...
Page 65 TK-880 PC BOARD VIEWS TX-RX UNIT (X57-6372-70) (B/2) Component side view : E3 (J72-0782-02 B/2) J72-0782-02 B/2 D512 R514 D517 R710 R517 C712 R510 C527 C710 C518 C583 R526 R713 L507 IC710 R525 R682 IC502 C524 R572 D511 IC501 IC508...
Page 66 TK-880 PC BOARD VIEW TX-RX UNIT (X57-6372-70) (B/2) Component side view + Foil side : E3 (J72-0782-02 B/2) J72-0782-02 B/2 D512 R520 R514 D517 R710 C607 C712 R517 MPTT C516 R518 R510 C515 C527 C710 C518 C583 R680 R525 RXAO...
Page 67: Schematic Diagram (E,E4)
SCHEMATIC DIAGRAM (E,E4) X57-6152-XX C139 C149 C270 C298 C400 C401 C475 L217 L410 R147 R149 R203 R204 R205 R206 R226 R231 R238 R402 TK-880 (E) -70 2P (B) 1.5P (B) 6.8K TK-880 (E4) -71 1.5P (B) 1P (B) 3.3K 6.8K 2.2K...
Page 68 TK-880 Note : Components marked with a dot (·) are parts of layer 1. SCHEMATIC DIAGRAM (E,E4)
Page 69: Schematic Diagram (E3)
TK-880 Note : Components marked with a dot (·) are parts of layer 1. SCHEMATIC DIAGRAM (E3)
Page 70 TK-880 Note : Components marked with a dot (·) are parts of layer 1. SCHEMATIC DIAGRAM (E3)
Page 71: Block Diagram
TK-880 TK-880 TK-880 BLOCK DIAGRAM...
Page 72: 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,E4) 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 73: Terminal Function
TERMINAL FUNCTION CN7 (TX-RX Unit A/2) ← → CN502 (TX-RX Unit B/2) CN101 (VCO) ← → TX-RX Unit A/2 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 74: Specifications
TK-880 SPECIFICATIONS GENERAL Frequency Range ........ E,E4 : 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,E4-type only) Wide 5k : 25kHz Input Voltage ........
Page 75 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., WD1 8EB United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands KENWOOD ELECTRONICS ITALIA S.p.A.

Kenwood TK-880 Service Manual

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