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Kenwood TKR-850 Service Manual
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Kenwood TKR-850 Service Manual

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See also: Service Manual , Instruction Manual
UHF FM REPEATER
TKR-850
SERVICE MANUAL
SUPPLEMENT II
This supplement to the Service Manual is available for products with serial number 50500011 (K,E,C), 51000011 (K2,K3,C3,C6)
or later.
This Service Manual contains a parts list, schematic diagrams and PC boards of a new final unit for the TKR-850.
Since the adjustment procedure is the same as before, refer to the Service Manual (B51-8557-20 : PDF only (K,K2,K3,E), B51-
8568-10 (C,C3,C6)) for the TKR-850 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 (X45-374X-XX) ................................................................ 4
SCHEMATIC DIAGRAM ........................................................................... 8
EXPLODED VIEW .................................................................................... 10
SPECIFICATIONS ................................................................................... 11
Key top
(K29-5460-02)
CONTENTS
© 2003-12 PRINTED IN JAPAN
B51-8676-00 ( N ) 1926
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-850

  • Page 1: Table Of Contents

    This Service Manual contains a parts list, schematic diagrams and PC boards of a new final unit for the TKR-850. Since the adjustment procedure is the same as before, refer to the Service Manual (B51-8557-20 : PDF only (K,K2,K3,E), B51- 8568-10 (C,C3,C6)) for the TKR-850 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-850 (Y54-319X-XX) FINAL UNIT (X45-374X-XX) Desti- Desti- Ref. No. Address Parts No.
  • Page 3 TKR-850 PARTS LIST FINAL UNIT (X45-374X-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C124 CM73F2H180J CHIP C 18PF R92-1215-05 CHIP R 1/2W C160 CM73F2H471J CHIP C 470PF RK73FB2A104J CHIP R...
  • Page 4 TKR-850 PC BOARD FINAL UNIT (X45-374X-XX) 0-10 : K,E,C 0-11 : K2 0-12 : K3,C3 3-01 : C6 Component side view (J72-0911-09) CN8 GND CN6 MAIN DC (BLACK) (RED) CN7 BACKUP (ORANGE) Back up battery Main DC CHARGE C120 FAB 1...
  • Page 5 TKR-850 PC BOARD FINAL UNIT (X45-374X-XX) 0-10 : K,E,C 0-11 : K2 0-12 : K3,C3 3-01 : C6 Component side view (J72-0911-09) C118 C120 J72-0911-09 (A/2) Component side Layer 1 Layer 2 Layer 3 Layer 4 Foil side...
  • Page 6 TKR-850 TKR-850 PC BOARD PC BOARD FINAL UNIT (X45-374X-XX) 0-10 : K,E,C 0-11 : K2 0-12 : K3,C3 3-01 : C6 FINAL UNIT (X45-374X-XX) 0-10 : K,E,C 0-11 : K2 0-12 : K3,C3 3-01 : C6 Component side view (J72-0911-09)
  • Page 7 TKR-850 PC BOARD FINAL UNIT (X45-374X-XX) 0-10 : K,E,C 0-11 : K2 0-12 : K3,C3 3-01 : C6 Foil side view (J72-0911-09) J72-0911-09 (A/2) Ref. No. Address...
  • Page 8 TKR-850 PC BOARD FINAL UNIT (X45-374X-XX) 0-10 : K,E,C 0-11 : K2 0-12 : K3,C3 3-01 : C6 Foil side view (J72-0911-09) C115 C114 Back up battery Main DC C105 C101 C103 C102 J72-0911-09 (B/2) Component side Layer 1 Layer 2...
  • Page 9 TKR-850 TKR-850 PC BOARD PC BOARD FINAL UNIT (X45-374X-XX) 0-10 : K,E,C 0-11 : K2 0-12 : K3,C3 3-01 : C6 FINAL UNIT (X45-374X-XX) 0-10 : K,E,C 0-11 : K2 0-12 : K3,C3 3-01 : C6 Foil side view (J72-0911-09)

  • Page 10: Schematic Diagram

    TKR-850 SCHEMATIC DIAGRAM FINAL UNIT (X45-374X-XX)(A/2) T:7.57V T:7.91V T:7.61V R:0V R:0V R:0V 2SC3356(R24) 6.8n 470p 470p 2SC5110(O) 2SK2596 T:0.70V T:0.69V R:0V R:0V Q1-3 RF AMP 100k 2SC4116(Y) DC SWITCH SURGE VOLTAGE PROTECTOR REGULATOR T:13.03V R:13.54V NJM78L05UA 100k TK11050M Comp.out Vcont Vref Comp.in...
  • Page 11 TKR-850 SCHEMATIC DIAGRAM • Note : The components marked with a dot ( ) are parts of layer 1. DRIVE FINAL AMP PD55008S RD60HUF1-01 C160 470p 470p 470p D4,5 RF DETECTOR T:4.26V R:0V DC AMP VOLTAGE C120 REFERENCE TA75W01FU 0.022u...
  • Page 12 FINAL UNIT (X45-374X-XX)(A/2) T:7.57V T:7.61V T:7.91V R:0V R:0V R:0V DRIVE FINAL AMP PD55008S RD60HUF1-01 2SC3356(R24) C160 470p 6.8n 470p 470p 470p 470p 2SC5110(O) 2SK2596 T:0.70V T:0.69V R:0V R:0V D4,5 RF DETECTOR Q1-3 RF AMP T:4.26V R:0V DC AMP VOLTAGE REFERENCE C120 TA75W01FU 0.022u...

  • Page 13: Exploded View

    TKR-850 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-850 SPECIFICATIONS (K,K2,K3,C,C3,C6 TYPE) GENERAL Frequency Range ........ K,C : 450 to 480MHz K2 : 480 to 512MHz K3,C3 : 400 to 430MHz C6 : 350 to 390MHz Number of Channels ......16 channel Channel Spacing ......... 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.