Kenwood TK-890/(B) Service Manual
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Kenwood TK-890/(B) 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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  • 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 UHF FM TRANSCEIVER TK-890/ TK-890H SERVICE MANUAL REVISED © 2001-6 PRINTED IN JAPAN B51-8439-10 ( N ) 1233 This service manual applies to products with 30300001 or subsequent serial numbers. (KCH-10 and KCH-11 are applicable to the productions June 2001 and after.) In terms of the products with the serial numbers earier than 30300001, refer to the TK-890/(B)/H(B) service manual as per part No.

  • Page 3: Table Of Contents

    TK-890/ CONTENTS / GENERAL GENERAL ......................... 2 SYSTEM SET-UP ......................4 OPERATING FEATURES ....................5 INSTALLATION ......................16 DISASSEMBLY FOR REPAIR ..................22 CIRCUIT DESCRIPTION ....................26 SEMICONDUCTOR DATA ..................... 32 DESCRIPTION OF COMPONENTS ................36 PARTS LIST ........................39 EXPLODED VIEW ......................

  • Page 4: General

    Your KENWOOD dealer can help you select an antenna sys- tion. Transmitter frequency, deviation, and power output tem that will best serve your particular needs.

  • Page 5: System Set-Up

    TK-890/ SYSTEM SET-UP Before Reading About System Set-up The TK-890(B)/H(B) is a transceiver main unit (without a 3. Remotely control one radio with two controllers. (Form panel or speaker) that you complete by adding options. : Radio + KRK-6DH + KCH-10/11 (two) + KCT-22M/M2/ The options are classified into three types according to M3 (two)) operation and function.

  • Page 6: Operating Features

    TK-890/ OPERATING FEATURES (1) POWER Switch 1. Controls and Functions Press to turn the power ON and OFF. 1-1. Basic Function Panel (2) TX/BUSY Indicator The TX Indicator (Red LED) shows that you are transmit- (19) ting. The BUSY Indicator (Green LED) shows that the channel is in use.
  • Page 7 TK-890/ OPERATING FEATURES Function Description Note Function Description Note [ ] : Key top name [ ] : Key top name Channel Switches the display between Speaker 1-2 Each speaker audio can be Dual HEAD Name [AN] Group-Channel No. and Group Mute [SPM] manually disabled from the configuration channel name.

  • Page 8: Scan Operation

    TK-890/ OPERATING FEATURES 2. Receive Description Note (27) C Lights when [AUXC] is pressed. (1) To turn on the RADIO: Press the Power Switch. The display and graphics illumi- The PF Port that is programmed nate to indicate the RADIO is ON. with “AUX C”...
  • Page 9 TK-890/ OPERATING FEATURES (1) The scan feature is initiated by pressing the [SCN] Key. 6. Deleting Channels and Groups from the (2) A single confirmation tone sounds, and scanning starts. If Scan Sequence there is only one or no added channels, an error tone will sound and scanning will not start.
  • Page 10 TK-890/ OPERATING FEATURES 10. Public Address (PA) CASE1 : HC has been set as “HC (Fixed)” Non-Scan Scanning Scan Public Address amplifies the microphone audio, and out- puts it through a PA speaker. PA is activated by pressing the Mode temporary [PA] Key.
  • Page 11 TK-890/ OPERATING FEATURES 17. Option Board (OPT) Display TX/BUSY Panel Keys Microphone backlight backlight Keys backlight If an optional Scrambler board has been installed in the RADIO, Scrambler is activated by pressing the [OPT] Key. A Default High High High High confirmation tone sounds, and the OPT icon is displayed.

  • Page 12: Tone Signalling

    TK-890/ OPERATING FEATURES 25. Busy Channel Lockout (BCL), BCL Override 29. Signalling AND/OR T h e B u s y C h a n n e l L o c k o u t f u n c t i o n p r e v e n t s (Possible to configure to each group) interferance with other stations that may be using the same The RADIO will be unmuted with a combination of QT/...
  • Page 13 TK-890/ OPERATING FEATURES 36-2. PF Output Port 33. Minimum Volume Pressing [AUXA] once → Low, Pressing [A] AUX A When the Volume Knob is adjusted fully counterclock- [AUXA] again → OPEN-COLLECTOR wise, the audio level is set to the Minimum Volume level which is programmed by the FPU.

  • Page 14: Power On Text

    TK-890/ OPERATING FEATURES • Emergency Mode Type 41-2. Programming Interface Cable KPG-43 Description Speaker mute on or off in the emergency mode. The KPG-43 is required to interface TK-890 to the com- puter. It has a circuit in its D-sub 25 pin connector case that •...
  • Page 15 TK-890/ OPERATING FEATURES 43. PC Tuning Mode Mode Function User mode Customer use this mode When making adjustment while in PC tuning mode, modify the KPG-43 programming interface cable as de- PC mode Communication between the radio and scribed below. PC (IBM compatiible).
  • Page 16 TK-890/ OPERATING FEATURES 44-3. Group Clone 44. Clone Modes 1. Enter the group clone mode from the clone mode with There are two clone modes : "All Clone Mode", in which [Up/Down] knob. all data programmed in one transceiver with the "FPU" is 2.

  • Page 17: Installation

    TK-890/ INSTALLATION 2-3. Install the accessory knobs 1. Contents When a function is set by the programming software • Front panel kit (KCH-10, KCH-11) (KPG-44D), the key legend can be changed by inserting the Description and use of the knob supplied with the KCH- accessory knobs into PF1 to PF9 of the KCH-11 (PF1 to PF5 10/11 : KCH-10).
  • Page 18 TK-890/ INSTALLATION 3-2. Voice scrambler board connection • Modification 1. Remove the upper half of the case of the TK-890. 2. Remove R515 and R604 on the control unit (X57-562 B/ 3) (Refer to page 21). • Connection The functions of pins of CN508 on the control unit (X57- 562 B/3) are shown in the figure.
  • Page 19 TK-890/ INSTALLATION 5. Ignition Sense Cable (KCT-18) Available function when KCT-18 is R504 R506 R742 R743 connected The KCT-18 is an optional cable to use the following func- tions: Horn alert function OFF during Present Absent Present Absent driving, Timed power off function 5-1.
  • Page 20 TK-890/ INSTALLATION 6-1. Connection for the KES-4 with the TK-890 6-2. Connection for the KES-4 with the remote kit • When taking the AF output from the accessory (KRK-5, KRK-6DH, KRK-7DB, KRK-8DBH) connector (9-pin) on the rear of the radio (When output is from the 12-pin accessory con- nector on the rear of the control head : remote The following tools are required for changing the connec-...
  • Page 21 TK-890/ INSTALLATION 6-3. Modification to increase the audio output of Default Modification 1 Modification 2 the control head R690 Present Present Absent The speaker output can be increased to 13W by moving R691 Present Absent Absent jumper resistor (0 ohm) R628 on the control unit (X57-562 R692 Absent Present...
  • Page 22 TK-890/ INSTALLATION R661 CONTROL UNIT (X57 B/3) R743 Connection with Component side view the remote kit Ignition sense (Page 20) cable (KCT-18) R742 (Page 18) R504 Ignition sense cable (KCT-18) (Page 18) R506 R546 Connection with the remote kit R705 (Page 20) R602 Connection with...
  • Page 23 TK-890/ DISASSEMBLY FOR REPAIR (TK-890/(B)) 1. Removing the Case and Shield Cover 3. Removing the Final Unit (X57-562 C/3) 1. Remove the 9 screws ( ), and remove the upper and 1. Remove the 2 screws ( ) holding the power module to lower halves of the case.

  • Page 24: Disassembly For Repair

    TK-890/ DISASSEMBLY FOR REPAIR (TK-890H(B)) 1. Removing the Case and Shield Cover 3. Removing the Final Unit (X45-357) 1. Remove the 12 screws ( ), and remove the upper and 1. Remove the 2 hexagonal bosses ( lower halves of the case. (Remove the 6 screws holding 2.

  • Page 25: Disassembly For Repair

    TK-890/ DISASSEMBLY FOR REPAIR 4. Removing the Control Unit (X57-562 B/3) 5. Removing the Accessory Connector on the Rear 1. Remove the 8 screws ( 2. With a screwdriver, remove the 2 leaf springs holding the 1. Confirm that the screw holding +DC cable (red) and the ICs to the frame ( screw holding –DC cable (black) of the final unit are re- 3.
  • Page 26 TK-890/ DISASSEMBLY FOR REPAIR 6. Disassembly of the Display Unit 7. Disassembly of the Display Unit (X54-3190) : KCH-10 (X54-3200) : KCH-11 1. Pull out the VOL and UP/DOWN knobs ( 1. Pull out the VOL and UP/DOWN knobs ( 2.

  • Page 27: Circuit Description

    TK-890/ CIRCUIT DESCRIPTION FINAL UNIT (X57 C/3) 1. Transmitter Circuit D3~5 1-1. Microphone amplifier section (X57 B/3) POWER coupler MODULE The audio input from the microphone is attenuated by VR501 and passes through the active high-pass filter (pre- emphasis circuit) in IC505, the compressor circuit in IC504, DRIVE the IDC (limiter circuit) in IC505, the summing amplifier cir- cuit in IC510, the active low-pass filter in IC510, the sum-...

  • Page 28: Circuit Description

    TK-890/ CIRCUIT DESCRIPTION 2. Receiver Circuit Item Rating Nominal center frequency 73.05MHz Incoming signals from the antenna pass through a low- ± 7.5kHz or more at 3dB pass filter in the final unit of the transmitter system, and are Pass bandwidth switched to the front-end of the receiver system via a re- ±...
  • Page 29 TK-890/ CIRCUIT DESCRIPTION 3. Squelch Circuit 5. VCO/PLL Circuit The output from IC101 enters FM IC again, then passed The VCO of TK-890 consists of three VCO circuits which through a band-pass filter. The noise component output one oscillates the transmit signal with Q305 and the others from IC101 is amplified by Q109 and rectified by D103 to do the first local receive signal with two RX-VCO.
  • Page 30 TK-890/ CIRCUIT DESCRIPTION 6. Control Circuit Q519 The control unit consists of microprocessor IC and its D507 Q543 peripheral circuits. It controls the TX-RX unit and transfers data to and from the control unit. The CPU (IC516) mainly performs the following : Q507 Q506 Q544...
  • Page 31 TK-890/ CIRCUIT DESCRIPTION • CPU (containing LCD driver) 8. Display Unit The on/off signals of keys other than the power switch, The optional display unit (front panel unit) for the TK- and the PTT and HOOK signals, are converted to serial data 890(B)/H(B) comes in two models : KCH-10 and KCH-11 and sent to the control unit.
  • Page 32 TK-890/ CIRCUIT DESCRIPTION 8-2. KCH-11 • Dimmer function This display unit consists of a CPU (IC4) a reset IC (IC2), From the control of the CPU’s DM1/DM2 port, you can 5V AVR (IC1), EEPROM (IC3), and other components. switch the LCD/KEY backlight, busy/TX LED, or the optional KMC-28 key backlight as shown in the following table.

  • Page 33: Semiconductor Data

    TK-890/ SEMICONDUCTOR DATA Microprocessor : 784214GCXXX8EU (Control Unit IC516) • Terminal function Pin No. Pin name Action Pin No. Pin name Action FCLR Modem FCLR RXD1 Serial interface RXD Common CLOCK TXD1 Serial interface TXD D/A converter CS Modem STB MSKE Modem MSKE Shift registerl (Control) CS...
  • Page 34 TK-890/ SEMICONDUCTOR DATA Microprocessor : 78064GCXXX8EU (Display Unit IC4) • Terminal function Pin No. Pin name Action Pin No. Pin name Action MIC PTT L : ON, H : OFF Not used [MON] key L : ON, H : OFF Serial interface RXD [PF6] key L : ON, H : OFF...
  • Page 35 TK-890/ SEMICONDUCTOR DATA • Block diagram • Shift register 2 on control unit (IC517) Pin No. Port Name Action MIC mute H : Mute, L : Unmute Audio line SW RX BPF← →DE-EMP mute switch –INV 1 DET line SW DET← →RX BPF kΩ...
  • Page 36 TK-890/ SEMICONDUCTOR DATA Flash ROM : AT29C020-90TI (Control Unit IC519) • Terminal description • Block diagram Pin Name Function Data inputs/outputs I/O0~I/O7 A0~A17 Addresses Chip enable DATA LATCH OE, CE, AND WE LOGIC INPUT/OUTPUT Output enable BUFFERS Y DECODER Y-GATING Write enable Address OPTIONAL BOOT...

  • Page 37: Description Of Components

    TK-890/ DESCRIPTION OF COMPONENTS General : TK-890/(B) Ref. No. Use/Function Operation/Condition IC203 Input : SB Output : 9V Ref. No. Use/Function Operation/Condition IC301 PLL IC 1 : CP 2 : DT 3 : EP Power amplifier 4 : Vss 5 : Fin 7 : Vcc 8 : REFin (16.8MHz) General : TK-890H(B)

  • Page 38: Description Of Components

    TK-890/ DESCRIPTION OF COMPONENTS Control Unit (X57-5620-XX) (B/3) Ref. No. Use/Function Operation/Condition -10 : TK-890/(B) K -11 : TK-890(B) K2 Q522 Beat shift switch On when beat shift -12 : TK-890(B) K3 -13 : TK-890H(B) K Q523 DC switch Serial data inverter Ref.
  • Page 39 TK-890/ DESCRIPTION OF COMPONENTS Display Unit (X54-3190-20) : KCH-10 Display Unit (X54-3200-20) : KCH-11 Ref. No. Use/Function Operation/Condition Ref. No. Use/Function Operation/Condition Input : SB Output : 5V Input : SB Output : 5V Reset Reset EEPROM EEPROM CPU/LCD driver 9V AVR 9V AVR DC switch...

  • Page 40: Parts List

    TK-890/ PARTS LIST CAPACITORS CC 45 TH 1H 220 J • Capacitor value Color* CC45 010 = 1pF 0 = 22pF 100 = 10pF 1 = Type … ceramic, electrolytic, etc. 4 = Voltage rating Multiplier 101 = 100pF 2 = Shape … round, square, ect. 5 = Value 2nd number 102 = 1000pF = 0.001µF...

  • Page 41: Parts List

    TK-890/ 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. Y : AAFES (Europe) X: Australia M: Other Areas...
  • Page 42 TK-890/ PARTS LIST TK-890(B) TX-RX UNIT (X57-5620-XX) : TK-890/(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation J21-8346-04 HARDWARE FIXTURE (DC,ACC) C92-0720-05 ELECTRO 100UF 25WV J61-0307-05 BAND ACSY C92-0760-05 ELECTRO 22UF 20WV C42,43...
  • Page 43 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-XX) : TK-890/(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C174 CK73GB1H102K CHIP C 1000PF C329 CC73GCH1H010C CHIP C 1.0PF C175 CK73GB1E223K CHIP C 0.022UF C329 CC73GCH1H020C...
  • Page 44 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-XX) : TK-890/(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C382 CK73FB1H183K CHIP C 0.018UF C592 CK73GB1H102K CHIP C 1000PF C382 CK73FB1H223K CHIP C 0.022UF C593 C92-0633-05...
  • Page 45 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-XX) : TK-890/(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C711 CC73GCH1H101J CHIP C 100PF L117,118 L40-1005-34 SMALL FIXED INDUCTOR (10UH) C712 CK73GB1E473J CHIP C 0.047UF L119 L40-4785-34...
  • Page 46 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-XX) : TK-890/(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R117 RK73GB1J332J CHIP R 3.3K 1/16W R223 RK73FB2A821J CHIP R 1/10W R118 RK73GB1J102J CHIP R 1.0K 1/16W R224,225...
  • Page 47 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-XX) : TK-890/(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R512 RK73GB1J184J CHIP R 180K 1/16W R589 RK73GB1J223J CHIP R 1/16W R513 RK73GB1J223J CHIP R 1/16W R591,592 RK73GB1J124J...
  • Page 48 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-XX) : TK-890/(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R680 RK73GB1J104J CHIP R 100K 1/16W D513-517 DA204U DIODE R690,691 R92-0670-05 CHIP R 0 OHM D519 DA204U DIODE...
  • Page 49 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-XX) : TK-890/(B) TK-890H(B) FINAL UNIT (X45-3570-10) : TK-890H(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation Q301,302 2SC4116(GR) TRANSISTOR F29-0472-04 INSULATING COVER ACSY Q303,304 2SC3722K(S) TRANSISTOR Q305-307...
  • Page 50 TK-890/ PARTS LIST FINAL UNIT (X45-3570-10) : TK-890H(B) TX-RX UNIT (X57-5620-13) : TK-890H(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CM73F2H100D CHIP C 10PF 2SD2531 TRANSISTOR C48,49 CK73FB1E104K CHIP C 0.10UF 2SA1162(Y) TRANSISTOR...
  • Page 51 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-13) : TK-890H(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C163 C92-0003-05 CHIP-TAN 0.47UF 25WV C330 CK73GB1H471K CHIP C 470PF C164 CK73GB1H102K CHIP C 1000PF C331 CC73GCH1H120J...
  • Page 52 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-13) : TK-890H(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C550 CK73FB1E104K CHIP C 0.10UF C624 CK73GB1H102K CHIP C 1000PF C551 CK73FB1E333K CHIP C 0.033UF C625 CK73GB1E103K...
  • Page 53 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-13) : TK-890H(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation L105 L40-1281-37 SMALL FIXED INDUCTOR (0.120UH) R127-129 RK73GB1J222J CHIP R 2.2K 1/16W L106 L40-2781-37 SMALL FIXED INDUCTOR (0.270UH) R130 RK73GB1J473J...
  • Page 54 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-13) : TK-890H(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R312 RK73GB1J332J CHIP R 3.3K 1/16W R528 RK73GB1J104J CHIP R 100K 1/16W R313 RK73GB1J103J CHIP R 1/16W R529,530...
  • Page 55 TK-890/ PARTS LIST TX-RX UNIT (X57-5620-13) : TK-890H(B) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R613 RK73GB1J393J CHIP R 1/16W R717 RK73GB1J102J CHIP R 1.0K 1/16W R615 RK73GB1J122J CHIP R 1.2K 1/16W R718...

  • Page 56: Display Unit (X54-3190-20) : Kch-10

    TK-890/ PARTS LIST TX-RX UNIT (X57-5620-13) : TK-890H(B) KCH-10 DISPLAY UNIT (X54-3190-20) : KCH-10 Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation IC515 BU4066BCF IC (ANALOG SWITCH) Q543,544 DTC114EUA DIGITAL TRANSISTOR IC516 784214GC0518EU IC (CPU)

  • Page 57: Display Unit (X54-3200-20) : Kch-11

    TK-890/ PARTS LIST DISPLAY UNIT (X54-3190-20) : KCH-10 KCH-11 DISPLAY UNIT (X54-3200-20) : KCH-11 Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C35-37 CK73GB1E103K CHIP C 0.010UF 2SC2873(Y) TRANSISTOR C43-47 CC73GCH1H101J CHIP C 100PF...
  • Page 58 TK-890/ PARTS LIST DISPLAY UNIT (X54-3200-20) : KCH-11 Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation E40-5953-05 PIN ASSY W02-0393-05 ENCODER E40-5704-05 PIN ASSY E40-5952-05 PIN ASSY E40-5738-05 PIN ASSY E40-5823-05 FLAT CABLE CONNECTOR E56-0410-15...
  • Page 59 TK-890/ EXPLODED VIEW (TK-890/(B)) : N09-2292-05 M3 x 6 (F) : N32-3006-46 M3 x 6 (OC) BLK : N33-3006-45 D M3 x 6 (Bi) : N35-3006-46 M3 x 8 : N67-3008-46 G M2.6 x 6 (Br-Tap) : N87-2606-46 M2.6 x 12 (Br-Tap) : N87-2612-46 M3 x 8 (Br-Tap) : N87-3008-46 Gx2 Gx2...
  • Page 60 TK-890/ EXPLODED VIEW (TK-890H(B)) : N09-2292-05 N M3 x 6 (OC) BLK : N33-3006-45 O M3 x 6 (Bi) : N35-3006-46 M3 x 8 : N67-3008-46 Q M4 X 8 : N68-4006-46 M2.6 x 6 (Br-Tap) : N87-2606-46 M2.6 x 12 (Br-Tap) : N87-2612-46 M3 x 8 (Br-Tap) : N87-3008-46 148x2...
  • Page 61 TK-890/ EXPLODED VIEW (KCH-10) X54 (B/3) X54 (A/3) X54 (C/3) U M2.6 x 5 (Br-Tap) : N87-2605-46 M2.6 x 8 (Br-Tap) : N87-2608-46 W M3 x 6 (Br-Tap) : N87-3006-46 218x2 Parts with the exploded numbers larger than 700 are not supplied.
  • Page 62 TK-890/ EXPLODED VIEW (KCH-11) X54 (B/2) X54 (A/2) X M2.6 x 5 (Br-Tap) : N87-2605-46 315x2 M2.6 x 8 (Br-Tap) : N87-2608-46 M3 x 8 (Br-Tap) : N87-3008-46 Parts with the exploded numbers larger than 700 are not supplied.
  • Page 63 TK-890/ PACKING (TK-890/(B)) 35 Polystyrene foamed fixture (H11-0896-04) 38 Packing fixture (H12-1403-04) 12 DC cord assy (E30-3318-15) : TK-890 7 Warranty card (B46-0470-00) 8 Instruction manual 62 Microphone (B62-0970-10) (T91-0587-25) : TK-890 44 Protection bag (H25-0194-04) 37 Polystyrene foamed board (H11-0892-04) : TK-890(B) 39 Carton board...
  • Page 64 TK-890/ PACKING (TK-890H(B)) 107 Warranty card (B46-0470-00) 137 Polystyrene foamed board 108 Instruction manual (H11-0815-04) (B62-0970-10) 135 Inner packing case (H02-0604-03) 143 Protection bag (H25-2063-04) 116 Short plug (SP) (E37-0733-05) 122 Insulating cover 144 Protection bag (F29-0472-04) (H25-0103-04) 150 Band (J61-0307-05) 145 Protection bag 159 Screw set...
  • Page 65 TK-890/ PACKING (KCH-10) 210 Carton board (H13-1059-04) 209 Polystyrene foamed board (H11-0894-04) 225 Screw set (N99-0364-05) 213 Protection bag (H25-0117-04) 221 Knob (K29-5276-03) 222 Knob 212 Protection bag (K29-5277-03) (H25-0103-04) 223 Knob (K29-5305-03) 211 Protection bag (H25-0029-04) 219 Knob (K29-4704-04) x 5 208 Polystyrene foamed fixture (H10-6622-02) 214 Item carton case...
  • Page 66 TK-890/ PACKING (KCH-11) 307 Carton board (H13-1059-04) 306 Polystyrene foamed board (H11-0894-04) 322 Screw set (N99-0364-05) 310 Protection bag (H25-0117-04) 318 Knob (K29-5276-03) 319 Knob 309 Protection bag (K29-5277-03) (H25-0103-04) 320 Knob (K29-5305-03) 308 Protection bag (H25-0029-04) 316 Knob (K29-4704-04) x 5 305 Polystyrene foamed fixture (H10-6622-02) 311 Item carton case...
  • Page 67 TK-890/ ADJUSTMENT Test signalling CH Key Functions in Panel Test Mode and Narrow Test frequency CH Panel Tune Mode Knob/Key Test mode Tune mode GRP UP Test mode/Tune mode changeover GRP DOWN Monitor ON/OFF UP/DOWN Narrow/Wide changeover Note : When a key other than GRP down is pressed, the Frequency CH down Tuning item down optional signalling is reset.
  • Page 68 TK-890/ ADJUSTMENT • Tuning item and display (XXX : 0~255) Tuning item Basic display Full display Note Frequency FREQ_XXX FREQUENCY_XXX_ RF power _POW_XXX POWER_ _ _ _ _XXX_ RF power _POW_XXX POWER_ _ _ _ _XXX_ Three digits on the upper left side: “_ _ L”. (450~470MHz) Transmission and reception at the low edge.
  • Page 69 TK-890/ ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications Standard Signal Generator Frequency Range 400 to 512MHz. (SSG) Modulation Frequency modulation and external modulation. Output 0.1µV to greater than 1mV. Power Meter Input Impedance 50Ω. Operation Frequency 400 to 512MHz or more. Measurement Capability Vicinity of 200W.
  • Page 70 TK-890/ ADJUSTMENT Adjustment Points • TK-890/(B) • TK-890H(B) Power module FINAL UNIT X57-562 C/3 FIANL UNIT X45-357 CN104 CN201 CN203 TX-RX UNIT L104 L101 CN101 X57-562 A/3 CN102 L113 L115 L112 CN103 L111 L120 L116 L114 CN202 Power module CN104 CN201 CN203 TX-RX UNIT...
  • Page 71 TK-890/ ADJUSTMENT Common Section Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 1. Frequency • Frequency range (MHz) list K : 450~490 (TK-890/(B), 890H(B)) K2 : 480~512 (TK-890(B)) K3 : 403~430 (TK-890(B)) • Adjustment frequency (MHz) •...
  • Page 72 TK-890/ ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 70Hz 4. Transmit 1) CH-SIG : 1-1 Power meter Rear Panel PF3 key CH-1 frequency frequency Select FREQ_XXX f. counter PF4 key in tune mode PTT : ON 5.
  • Page 73 TK-890/ ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 6. MCF 1) CH-SIG : 1-1 Spectrum TX-RX CN103 TX-RX L112 Adjust it to make gain maximum, and make the • Wide Spectrum analyzer analyzer (A/3) (A/3) L113 band flat as shown in the below.
  • Page 74 TK-890/ ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment PF3 key Wide ±4.1kHz ± 0.1kHz 9. Maximum 1) Select _ _L Power meter Rear Panel deviation MXDV_XXX Deviation PF4 key • Wide in tune mode meter PTT : ON AF VTVM Panel...
  • Page 75 TK-890/ ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment PF3 key Wide ±0.75kHz ± 0.05kHz 12. QT 1) CH-SIG : 1-4 Power meter Rear Panel deviation Select QTDV_XXX Deviation PF4 key in tune mode meter PTT : ON AF VTVM Panel Deviation meter filter...
  • Page 76 TK-890/ ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 16. Sensitivity 1) Test mode Rear Wide low check SINAD 12dB or more CH-SIG : Low - 1 SSG output : –116dBm/0.35µV AF VTVM EXT.SP AF output : 2V/4Ω Distortion meter 2) Test mode...

  • Page 77: Control Unit (X57-5620-Xx) (B/3)

    TK-890/ TERMINAL FUNCTION Connector Terminal Terminal Connector Terminal Terminal Terminal Function Terminal Function Name Name FINAL UNIT (X45-3570-10) : TK-890H(B) CONTROL UNIT (X57-5620-XX) (B/3) Transmission drive input. W501 Output for remote speaker. Coaxial connector. Output for remote speaker. TX-RX Display Power output after power switch unit unit...

  • Page 78: Final Unit (X57-5620-Xx) (C/3) : Tk-890/(B)

    TK-890/ TERMINAL FUNCTION Connector Terminal Terminal Connector Terminal Terminal Terminal Function Terminal Function Name Name Auxiliary output 1 (FPU selectale). Receiver signal output. Auxiliary output 2 (FPU selectale). Coaxial connector. Auxiliary output 3 (FPU selectale). TX-RX TXD2 Serial data output. unit Auxiliary output 4 (FPU selectale).
  • Page 79 TK-890/ TERMINAL FUNCTION Connector Terminal Terminal Connector Terminal Terminal Terminal Function Terminal Function Name Name Output frequency response : Acc 25 pin D-sub connector Wide : 300~4.8kHz +1/–2dB RSSI signal output. 4.8~9.6kHz +1/–24dB Narrow : 300~4.8kHz +1/–10dB RSSI vs ANT input (Typical value) (1kHz=0dB) Wide Narrow...
  • Page 80 TK-890/ TK-890/ WIRING...
  • Page 81 TK-890/ PC BOARD VIEWS DISPLAY UNIT (X54-3190-20) Component side view : KCH-10 (B/3) J72-0561-22 (C/3) R41 R42 R43 DOWN J72-0561-22 (A/3) Component side Foil side DISPLAY UNIT (X54-3190-20) Foil side view : KCH-10 J72-0561-22 (A/3) DOWN R41 R42 R43 J72-0561-22 (C/3) (B/3)
  • Page 82 TK-890/ PC BOARD VIEWS Component side Foil side DISPLAY UNIT (X54-3200-20) Component side view : KCH-11 J72-0562-12 A/2 DOWN DISPLAY UNIT (X54-3200-20) Foil side view : KCH-11 DOWN J72-0562-12 A/2...
  • Page 83 TK-890/ Note : Components marked with a dot (·) are parts of pattern 1. CIRCUIT DIAGRAM...
  • Page 84 TK-890/ CIRCUIT DIAGRAM Note : Components marked with a dot (·) are parts of pattern 1.
  • Page 85 TK-890/ PC BOARD VIEW CONTROL UNIT (X57-5620-XX) (B/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 -13 : TK-890H(B) K Component side view J72-0569-42 B/3 IC514 R594 R595 R602 R663 R662 R529 C544 R530 R607 R718 R695 R661 C588...
  • Page 86 TK-890/ PC BOARD VIEW CONTROL UNIT (X57-5620-XX) (B/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 -13 : TK-890H(B) K Foil side view Q543 J72-0569-42 B/3 R740 D515 D523 D521 D516 D519 D517 D513 C698 R734 Q544 R736 C529...
  • Page 87 TK-890/ PC BOARD VIEW CONTROL UNIT (X57-5620-XX) (B/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 -13 : TK-890H(B) K Component side view + Foil side Q543 J72-0569-42 B/3 R740 D513 D517 D519 D516 D521 D523 D515 C698 IC514...
  • Page 88 TK-890/ PC BOARD VIEWS FINAL UNIT (X57-5620-XX) (C/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 Component side view Ref No. Address J72-0569-42 C/3 Component side Pattern 1 Pattern 2 Pattern 3 Pattern 4 Foil side FINAL UNIT (X57-5620-XX) (C/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 Foil side view Ref No.
  • Page 89 TK-890/ PC BOARD VIEW FINAL UNIT (X57-5620-XX) (C/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 Component side view + Foil side J72-0569-42 C/3 Component side Ref No. Address Ref No. Address Ref No. Address Pattern 1 Pattern 2 Pattern 3 Pattern 4...
  • Page 90 TK-890/ PC BOARD VIEW TX-RX UNIT (X57-5620-XX) (A/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 -13 : TK-890H(B) Component side view J72-0569-42 A/3 CN203 L204 C210 C219 CN201 CN104 C202 R206 R204 C223 D201 R202 R220 R107 C204...
  • Page 91 TK-890/ PC BOARD VIEW TX-RX UNIT (X57-5620-XX) (A/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 -13 : TK-890H(B) Foil side view J72-0569-42 A/3 R224 C225 R225 R222 C235 C103 L102 C108 C107 Q101 R109 C110 Q202 R218 R221...
  • Page 92 TK-890/ PC BOARD VIEW TX-RX UNIT (X57-5620-XX) (A/3) -10 : TK-890/(B) K -11 : TK-890(B) K2 -12 : TK-890(B) K3 -13 : TK-890H(B) Component side view + Foil side J72-0569-42 A/3 CN203 L204 C210 C219 CN201 R224 CN104 C225 R225 C202 R206 R204...
  • Page 93 TK-890/ Note : Components marked with a dot (·) are parts of pattern 1. CIRCUIT DIAGRAM...
  • Page 94 TK-890H CIRCUIT DIAGRAM Note : Components marked with a dot (·) are parts of pattern 1.
  • Page 95 TK-890H PC BOARD VIEW FINAL UNIT (X45-3570-10) Component side view : TK-890H(B) J72-0570-02 Component side Foil side...

  • Page 96: Block Diagram

    TK-890/ TK-890/ BLOCK DIAGRAM...

  • Page 97: Specifications

    Audio Distortion ..........Less than 2% at 1000Hz Band Spread ........... TK-890 : 40MHz (K), 32MHz (K2), 27MHz (K3) TK-890H : 30MHz KENWOOD follows a policy of continous advancement in development. For this reason, specifications may be changed without notice. APPLICABLE (MIL-STD) Military Standard...
  • Page 98 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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