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Kenwood TKR-750 Service Manual
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Kenwood TKR-750 Service Manual

Kenwood tkr-750 vhf fm repeater service manual
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See also: Service Manual , Instruction Manual
VHF FM REPEATER
TKR-750
SERVICE MANUAL
SUPPLEMENT
This supplement to the Service Manual is available for products with serial number 50500001 or later.
This Service Manual contains a parts list, schematic diagrams and PC boards of a new final unit for the TKR-750.
Since the adjustment procedure is the same as before, refer to the Service Manual (K,E : B51-8556-10 , C : B51-8567-00) for
the TKR-750 for items not provided in this Service Manual.
Panel (Outer)
(A62-0840-03)
Panel assy
(A62-0934-03)
PARTS LIST .............................................................................................. 2
PC BOARD
FINAL UNIT (X45-3730-XX) ................................................................. 4
SCHEMATIC DIAGRAM ........................................................................... 8
EXPLODED VIEW ................................................................................... 10
SPECIFICATIONS ................................................................................... 11
Key top
(K29-5460-02)
CONTENTS
© 2003-7 PRINTED IN JAPAN
B51-8661-00 ( N ) 1927
Knob (DC source)
(K29-9106-04)
Knob (VOL)
(K29-5389-03)
Modular jack
(E08-0877-05)

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Summary of Contents for Kenwood TKR-750

  • Page 1: Table Of Contents

    This supplement to the Service Manual is available for products with serial number 50500001 or later. This Service Manual contains a parts list, schematic diagrams and PC boards of a new final unit for the TKR-750. Since the adjustment procedure is the same as before, refer to the Service Manual (K,E : B51-8556-10 , C : B51-8567-00) for the TKR-750 for items not provided in this Service Manual.

  • Page 2: Parts List

    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. C : China TKR-750 (Y54-318X-XX) FINAL UNIT (X45-3730-XX) Desti- Desti- Ref. No. Address Parts No.
  • Page 3 TKR-750 PARTS LIST FINAL UNIT (X45-3730-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation RK73GB1J103J CHIP R 1/16W RK73FB2A121J CHIP R 1/10W R92-1252-05 CHIP R 0 OHM J 1/16W RK73FB2A101J...
  • Page 4 TKR-750 PC BOARD FINAL UNIT (X45-3730-XX) -10 : K,E,C -11 : K2,C2 Component side view (J72-0910-09) CN8 GND CN6 MAIN DC (BLACK) (RED) CN7 BACKUP (ORANGE) Back up battery Main DC C118 CHARGE FAB 1 C106 C143 TX IN J72-0910-09 (B/2) Ref.
  • Page 5 TKR-750 PC BOARD FINAL UNIT (X45-3730-XX) -10 : K,E,C -11 : K2,C2 Component side view (J72-0910-09) C164 C118 C142 C140 J72-0910-09 (B/2) Component side Layer 1 Layer 2 Layer 3 Layer 4 Foil side...
  • Page 6 TKR-750 TKR-750 PC BOARD PC BOARD FINAL UNIT (X45-3730-XX) -10 : K,E,C -11 : K2,C2 FINAL UNIT (X45-3730-XX) -10 : K,E,C -11 : K2,C2 Component side view (J72-0910-09) Component side view (J72-0910-09) CN8 GND CN6 MAIN DC (BLACK) (RED) C164...
  • Page 7 TKR-750 PC BOARD FINAL UNIT (X45-3730-XX) -10 : K,E,C -11 : K2,C2 Foil side view (J72-0910-09) J72-0910-09 (A/2) Ref. No. Address Ref. No. Address...
  • Page 8 TKR-750 PC BOARD FINAL UNIT (X45-3730-XX) -10 : K,E,C -11 : K2,C2 Foil side view (J72-0910-09) Back up battery Main DC C108 C109 C110 J72-0910-09 (B/2) Component side Layer 1 Layer 2 Layer 3 Layer 4 Foil side...
  • Page 9 TKR-750 TKR-750 PC BOARD PC BOARD FINAL UNIT (X45-3730-XX) -10 : K,E,C -11 : K2,C2 FINAL UNIT (X45-3730-XX) -10 : K,E,C -11 : K2,C2 Foil side view (J72-0910-09) Foil side view (J72-0910-09) Back up battery Main DC C108 C109 C110...

  • Page 10: Schematic Diagram

    TKR-750 SCHEMATIC DIAGRAM FINAL UNIT (X45-3730-XX)(A/2) T:8.04V R:0V T:7.84V R:0V 350mW C143 1000p 1000p 1000p 2SC3357 2SC3356 (R24) THERMAL T:1.15V T:0.73V SENSE R:0V R:0V Q2,3 1SS226 RF AMP SURGE 100k ABSORPTION VOLTAGE REGULATOR DC SWITCH T:13.02V R:13.65V NJM78L05UA 2SC4116(Y) 3 IN...
  • Page 11 TKR-750 SCHEMATIC DIAGRAM 3.0A FINAL AMP C160 120p 1000p 1000p 1000p DRIVE 100k 100k D4,5 RF DETECTOR T:5.18V VOLTAGE R:0V REFERENCE DC AMP TA75W01FU IN2+ IN2- IN1+ OUT-B IN1- OUT1 (X45-3730-XX)(B/2) CN51 MAIN DC MAIN DC REVERSE T:13.03V CURRENT R:13.56V...
  • Page 12 FINAL UNIT (X45-3730-XX)(A/2) 3.0A T:8.04V R:0V T:7.84V R:0V FINAL AMP 350mW C160 C143 120p 1000p 1000p 1000p 1000p 1000p 1000p 2SC3356 2SC3357 (R24) DRIVE 100k 100k D4,5 RF DETECTOR THERMAL T:1.15V T:0.73V SENSE R:0V R:0V T:5.18V Q2,3 1SS226 VOLTAGE R:0V RF AMP REFERENCE DC AMP...

  • Page 13: Exploded View

    TKR-750 EXPLODED VIEW M4 x 14 : N30-4014-46 N M3 x 8 : N67-3008-46 O M2.6 x 6 (Br-Tap) : N87-2606-46 Q M3 x 6 (Br-Tap) : N87-3006-46 Hardware fixture (J21-8467-04) Earth spring (G02-0894-04) Qx11 Final (A/2) Final (B/2) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 14: Specifications

    TKR-750 SPECIFICATIONS (K,K2,C,C2 TYPE) GENERAL Frequency Range ........ K,C : 146 to 174MHz K2,C2 : 136 to 150MHz Number of Channels ......16 channel Channel Spacing ......... K,K2 : Wide : 30kHz, 25kHz Narrow : 15kHz, 12.5kHz (PLL channel stepping 2.5kHz/5kHz/6.25kHz/7.5kHz) C,C2 : Wide : 25kHz Narrow : 12.5kHz...
  • Page 15 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.