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Kenwood TK-2140 Service Manual

Kenwood TK-2140 Service Manual

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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-2140

  • 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 This service manual (B51-8774-00) applies to products with serial numbers of 80300051 or subsequent serial numbers. Additionally, this TK-2140 has been prepared for RoHS. Refer to the TK-2140 service manual (B51-8630-00) for any information which has not been covered in this manual. CONTENTS...
  • Page 3 TK-2140 PARTS LIST CAPACITORS CC 45 TH 1H Capacitor value Color* CC45 010 = 1pF 0 = 22pF 100 = 10pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating Multiplier 2 = Shape ... round, square, ect.
  • Page 4 E: Europe 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-2140 (Y50-5632-71) TX-RX UNIT (X57-6402-71) Ref. No. Address Parts No. Description Destination Ref.
  • Page 5 TK-2140 PARTS LIST TX-RX UNIT (X57-6402-71) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C125-127 CK73HB1H102K CHIP C 1000PF K C236 CC73HCH1H020C CHIP C 2.0PF C128 CC73HCH1H101J CHIP C 100PF C238 CC73HCH1H180J...
  • Page 6 TK-2140 PARTS LIST TX-RX UNIT (X57-6402-71) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C332 CK73HB1C103K CHIP C 0.010UF K C512 CK73HB1A473K CHIP C 0.047UF K C333 CK73HB1H332K CHIP C 3300PF K...
  • Page 7 TK-2140 PARTS LIST TX-RX UNIT (X57-6402-71) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts ∗ CN500 E40-6257-15 PIN ASSY L77-1869-05 TCXO (16.8MHz ) X200 L77-1760-15 CRYSTAL RESONATOR(44.395MHz) F20-1190-04 INSULATING SHEET X300 L77-1810-05 CRYSTAL RESONATOR(9.8304MHz)
  • Page 8 TK-2140 PARTS LIST TX-RX UNIT (X57-6402-71) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R137 RK73HH1J105D CHIP R 1.0M D 1/16W R268 RK73HB1J221J CHIP R J 1/16W R138 RK73HB1J561J CHIP R J 1/16W...
  • Page 9 TK-2140 PARTS LIST TX-RX UNIT (X57-6402-71) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R373 RK73HB1J124J CHIP R 120K J 1/16W R540 RK73HB1J000J CHIP R 0 OHM J 1/16W R374 RK73HB1J104J CHIP R...
  • Page 10 TK-2140 PARTS LIST TX-RX UNIT (X57-6402-71) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts D106 HZU5CLL ZENER DIODE Q203 2SK1824-A D200 HVC131 DIODE D201 RB706F-40 DIODE Q204 2SK1830F D202,203 DAN235E DIODE Q205...
  • Page 11 TK-2140 PC BOARD TX-RX UNIT (X57-6402-71) (A/3) Component side view (J79-0057-09 A/3) L314 L315 C375 R388 D302 L311 C349 C352 R371 C354 R381 Q305 R380 Q307 R364 L309 C356 R374 R368 R378 – R372 R360 R383 C348 CN306 Q301 L312...
  • Page 12 TK-2140 PC BOARD TX-RX UNIT (X57-6402-71) (A/3) Component side view (J79-0057-09 A/3) CN305 IC312 IC311 – C362 R319 C364 R316 C371 C313 C389 C383 SP– D304 C384 R361 IC308 C304 C215 L313 R303 D300 C396 CP307 CP308 CP309 CP310 CP311 CP312...
  • Page 13 TK-2140 TK-2140 PC BOARD PC BOARD TX-RX UNIT (X57-6402-71) (A/3) Component side view (J79-0057-09 A/3) TX-RX UNIT (X57-6402-71) (A/3) Component side view (J79-0057-09 A/3) L314 L315 CN305 C375 R388 D302 L311 IC312 IC311 – C349 C362 R319 C352 R371 C364...
  • Page 14 TK-2140 PC BOARD TX-RX UNIT (X57-6402-71) (A/3) Foil side view (J79-0057-09 A/3) C329 X200 CF200 C212 L201 R226 L905 R208 Q205 IC200 R320 R911 C318 R907 R908 CF201 R323 R211 C391 C394 C218 D203 CD200 R919 R910 C275 IC305 R915...
  • Page 15 TK-2140 PC BOARD TX-RX UNIT (X57-6402-71) (A/3) Foil side view (J79-0057-09 A/3) L220 R276 R238 R275 L223 C295 R232 XF202 R233 C242 L210 C239 Q205 C230 C290 C241 C281 R235 R237 R240 C240 C252 R229 C236 C244 L206 C289 R230...
  • Page 16 TK-2140 TK-2140 PC BOARD PC BOARD TX-RX UNIT (X57-6402-71) (A/3) Foil side view (J79-0057-09 A/3) TX-RX UNIT (X57-6402-71) (A/3) Foil side view (J79-0057-09 A/3) C329 X200 L220 R276 R238 R275 CF200 C212 C295 L223 R232 L201 XF202 R226 R233 L905...
  • Page 17 TK-2140 PC BOARD TX-RX UNIT (X57-6402-71) (B/3) Component side view (J79-0057-09 B/3) Ref. No. Address Q505 R529 R533 BEEP R528 LIMITSW R530 MICI 5CNS AFDIR MSK SW AFRDT TXHSD TXAF EM TONE SW R534 RXAFI AFTRD AFRTM HSDIN AFDAT Q505...
  • Page 18 TK-2140 PC BOARD TX-RX UNIT (X57-6402-71) (B/3) Foil side view (J79-0057-09 B/3) X500 Ref. No. Address IC500 IC501 C542 C509 C506 R543 R545 IC502 R506 Q501 C501 R500 Q500 Q501 R549 C523 C525 Q502 Q507 R517 R523 C503 Q504 IC501...
  • Page 19 TK-2140 SCHEMATIC DIAGRAM TX-RX UNIT(X57-6402-71)(A/3) 7.50V BATT 5M AVR F400 L400 IC401 XC6204B502MR 7.50V 7.49V 7.21V 5.01V F53-0324-05 SURGE D405 ABSORPTION VOUT RB521S-30 5M PROTECT CN400 IC400 XC61CN4202NR CP400 DETECTOR DETECTOR 47K*2 IC404 XC61CN5002NR 5C AVR CP401 IC403 47k*2 XC6204B502MR 5.06V...
  • Page 20 TK-2140 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6402-71) T:4.50V R:4.48V R817 C838 C831 C840 C832 R824 1000p L807 L808 LD PROTECT PLL IC IC801 LMX2316TMX T:0.43V Q803 R:0.43V 2SC5010-T1-A GND3 OSCI F IN RF AMP 5.00V VCC1 R825 DATA GND2 FO/LD GND1...
  • Page 21 TK-2140 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6402-71) TX VCO OSCILLATION D1,3,7,8,804 TX VCO D100,101 TX VCO 2SK508NV(K52) HVC376B MODULATION TX/RX COMMON RF AMP T:2.81V TX/RX RF SWITCH T:1.19V BUFFER AMP R:0V T:0.65V R:1.19V HVC376B 2SC5108(Y)F D101 R:0.75V 2SC5108(Y)F HSC277 T:0.83V R:0.83V 0.5p(B)
  • Page 22 TK-2140 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6402-71) TX FINAL AMP Q106 L109 L110 L710 C141 TX DRIVE AMP 2SK2595-E L106 Q103 R113 C119 PRE-DRIVE AMP 2SK2596 1000p L105 R102 C103 R106 C106 R111 C109 T:3.12V(H) :1.35V(L) 1.5k 1000p Q100 R:0V T:1.58V...
  • Page 23 TK-2140 SCHEMATIC DIAGRAM ● Note : The components marked with a dot ( ) are parts of layer1. TX-RX UNIT (X57-6402-71) D102 D102,103 HVC131 ANT SWITCH D103 C146 L113 L114 L115 CN13 HVC131 1000p C148 C150 C153 LCD ASSY(B38-0859-05) CN302...
  • Page 24 TK-2140 SCHEMATIC DIAGRAM TX-RX UNIT(X57-6402-71)(A/3) T:4.50V D102 Note : The components marked with a dot ( ● ) are parts of layer 1. R:4.48V TX FINAL AMP D102,103 R817 HVC131 ANT SWITCH Q106 TX DRIVE AMP 2SK2595-E L109 L110 L710...
  • Page 25 TK-2140 MEMO...
  • Page 26 Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Bp 58416 Villepinte, 95944 Roissy Ch De Gaulle Cedex Kwai Fong, N.T., Hong Kong KENWOOD House, Dwight Road, Watford, Herts., 1 Ang Mo Kio Street 63, Singapore 569110 WD18 9EB United Kingdom...