Kenwood TKR-851 Service Manual

Uhf fm repeater

Hide thumbs Also See for TKR-851:

Service manual (79 pages)

Service manual supplement (16 pages)

Programming reference manual (83 pages)

100

101

page of 101

/ 101
Contents
Table of Contents
Bookmarks

Table of Contents

Quick Links

Summary of Contents for Kenwood TKR-851

Page 1: Table Of Contents
© 2004-5 PRINTED IN JAPAN B51-8684-00 ( N ) 987 Front panel Knob (Volume) Knob (DC source) (A62-0934-03) (K29-5389-03) (K29-9106-04) UHF FM REPEATER TKR-851 Key top Modular jack (K29-5460-02) (E08-0877-05) Fuse (Blade, 10A/32V) (F06-1032-05) x 2 Antenna cable (N) Antenna cable (BNC)
Page 2: General
TKR-851 GENERAL / SYSTEM SET-UP INTRODUCTION PERSONAL SAFETY SCOPE OF THIS MANUAL The following precautions are recommended for personal safety : This manual is intended for use by experienced techni- • DO NOT transmit until all RF connectors are secure and cians familiar with similar types of commercial grade commu- any open connectors are properly terminated.
Page 3: Operating Features
TKR-851 OPERATING FEATURES • “E2” is displayed when the channel data is not written. 1. Two 7-segment LED displays • Channel display (1~16) : While operating normally in user mode. • “E3” is displayed when PLL is unlocked. Receiver PLL unlocked = BUSY LED blinks.
Page 4: Realignment
User mode Use this mode for normal operation. The data can be input to or read from TKR-851 and edited on the screen. The programmed or edited data can be PC mode Use this mode to make various settings by printed out.
Page 5: Installation
3. Set the firmware to be updated by file name item. (Rear Connectors) 4. Turn the TKR-851 power on with the [PF1] key held down. This unit has two external power supply connectors : Main Hold the key down for one second until the 7-segment DC and Backup.
Page 6 CN606 (15-pin) on the rear of the radio is 4W/4Ω. Use external speaker KES-4 or KES-5. 3-1. Connection for the KES-4 or KES-5 With the TKR-851 CN605 ■ When taking the AF output from the TEST/ SPKR connector (15-pin) on the rear of the radio The following tools are required for changing the connec- tor.
Page 7 TKR-851 INSTALLATION Note : 4. Accessory Cabinet Relationship between TEST/SPKR connector (15-pin) con- You can install optional accessories, such as a DC power nection and speaker output. supply or duplexers in the accessory cabinet. When pins 9 and 12 are shorted : Built-in internal speaker is used.
Page 8: Modification
TKR-851 INSTALLATION / MODIFICATION 5. Key Cover 7. Installing Name Plates To avoid accidentally pressing the keys, you can install the Punch out the name plate card. Then insert the plates key cover. onto the reltative function keys. You can reconfigure the name plates at any time.
Page 9 TKR-851 MODIFICATION 2. Trickle Charge for Backup Battery If the external DC power supply is connected to the Main DC connector and a backup battery (12V rechargeable type) is Final unit (A/2) connected to the Backup connector at the same time, the...
Page 10: Disassembly For Repair
TKR-851 DISASSEMBLY FOR REPAIR 1. How to Remove the Panel Assy (ABS) Note : You can remove the panel assembly (ABS) without removing the top panel (A62-0840-03). 1. To remove panel (TX-RX, w), loose 6 screws ( q ). 2. To remove panel assembly (Front, r), loose 6 screws ( e ).
Page 11: Circuit Description
1. Outline The front-end circuit consists of BPF L2, RF amplifier Q1, The TKR-851 is a UHF/FM repeater designed to operate in and BPF L4/L5. The helical BPF covers frequency ranges 440 the frequency range of 440 to 470MHz (E), 450 to 480MHz to 480MHz, with a passband of 5.0MHz.
Page 12 TKR-851 CIRCUIT DESCRIPTION 2-3. IF Amplifier 3. Transmitter Circuit The first IF signal is amplified by Q2 and Q3, and then en- The transmitter circuit consists of the following circuits : 3- ters IC9 (FM system IC). The signal is heterodyned again 1 microphone circuit, 3-2 modulation level adjustment circuit, with a second local oscillator signal (44.395MHz) with in IC9...
Page 13 TKR-851 CIRCUIT DESCRIPTION 3-3. Driver and Final Power Amplifier Circuit The transmit signal is generated by the TX VCO (A2), am- plified by Q11, and sent to final unit (X45-374). This amplified signal is amplified by Q1, Q2, Q3 and Q4, and is passed to the FINAL stage.
Page 14 TKR-851 CIRCUIT DESCRIPTION 4-2. Transmitter PLL 4. PLL Frequency Synthesizer The transmitter PLL circuit is located in VCO unit A2 (X58- The PLL frequency synthesizer circuit consists of the fol- 481) on TX-RX unit (X57-696 A/2), and consists of VCXO X3, lowing circuits : 4-1 receiver PLL circuit, 4-2 transmitter PLL VCO’s (Q350), a single-chip PLL IC IC300, buffer amplifier...
Page 15 TKR-851 CIRCUIT DESCRIPTION 5-5. Display Circuit 5. Control Circuit The display circuit (X54-333) contains two 7-segment The control circuit mainly located in the control section of LEDs D506, D507 (orange : see the operation manual for de- TX-RX unit (X57-696 B/2) consists of the following : 5-1 CPU,...
Page 16 TKR-851 CIRCUIT DESCRIPTION 5-6. DSP 5-7. Base-Band Circuit The DSP circuit filters transmit/receive audio signal and The base-band circuit switches between the modulation encode/decodes signaling (QT, DQT). This circuit consists of signal to the transmitter circuit, and remote audio and adjusts IC618, IC612, IC613, IC614, IC603, IC606, IC608, IC610, their levels.
Page 17 TKR-851 CIRCUIT DESCRIPTION 5-10. 5-tone* Decode IC604 checks the square wave frequency for the pres- The 300 to 3000Hz frequency characteristics of the signal that enters the comparator are made flat by the circuit, and ence of the required tone, and if the tone matches, IC604 the band is made into that band required to detect 5-tone performs the subsequent required processing.
Page 18: Semiconductor Data
TKR-851 SEMICONDUCTOR DATA Main CPU : 30622M4A-487GP (TX-RX unit IC604) ■ Pin Function Pin No. Name Function Pin No. Name Function Aux I/O No.5 (Acc D-sub 25 pin) – Not used Aux I/O No.4 (Acc D-sub 25 pin) HOLD –...
Page 19 TKR-851 SEMICONDUCTOR DATA DSP : 320VC5402PGE (TX-RX unit IC618) ■ Pin Function Pin No. Name Function Pin No. Name Function NC1,NC2 – Not used (No connection) BDR0 Serial data receive input – HCNTL1 HPI control 1 DVDD – VDD for I/O pins (+3.3V) BDR1 –...
Page 20: Components Description
TKR-851 SEMICONDUCTOR DATA / COMPONENTS DESCRIPTION Final Unit (X45-3742-71) Ref. No. Part name Description Thermostat Pin No. Name Function Voltage regulator EMU1/OFF Emulator 1 (to JTAG connector) DC amplifier Test data output (to JTAG connector) Q1,2 Transistor RF amplifier Test data input (to JTAG connector)
Page 21: Components Description
TKR-851 COMPONENTS DESCRIPTION Ref. No. Part name Description Ref. No. Part name Description D/A converter Q603 Transistor Inverter Shift register Q604 DC switch FM IF system Q605 Transistor Inverter IC10,11 Voltage regulator Q606 Transistor AF mute switch IC600 EEPROM Q607~609...
Page 22: Parts List
TKR-851 PARTS LIST CAPACITORS 2 2 0 • Capacitor value CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc. 5 = Value...
Page 23 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. TKR-851 (Y54-323X-XX) FINAL UNIT (X45-3742-71) Desti- Desti- Ref. No. Address Parts No.
Page 24 TKR-851 PARTS LIST FINAL UNIT (X45-3742-71) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CK73FB1E104K CHIP C 0.10UF E04-0154-05 PIN SOCKET CK73GB1H471K CHIP C 470PF E40-5632-05 PIN ASSY CK73FB1E224K CHIP C 0.22UF...
Page 25 TKR-851 PARTS LIST FINAL UNIT (X45-3742-71) DISPLAY UNIT (X54-3330-21) TX-RX UNIT (X57-6962-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation RK73GB1J154J CHIP R 150K 1/16W C603 CC73GCH1H101J CHIP C 100PF...
Page 26 TKR-851 PARTS LIST TX-RX UNIT (X57-6962-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CC73GCH1H120J CHIP C 12PF C107 CC73GCH1H060D CHIP C 6.0PF CC73GCH1H0R5C CHIP C 0.5PF C109 CC73GCH1H120J CHIP C...
Page 27 TKR-851 PARTS LIST TX-RX UNIT (X57-6962-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C600 CK73GB1C104K CHIP C 0.10UF C738 CK73GB1E103K CHIP C 0.010UF C602 CK73GB1C104K CHIP C 0.10UF C739...
Page 28 TKR-851 PARTS LIST TX-RX UNIT (X57-6962-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C830 CK73GB1E103K CHIP C 0.010UF L92-0140-05 FERRITE CHIP C831 CK73GB1H102K CHIP C 1000PF L600-608 L92-0140-05 FERRITE CHIP...
Page 29 TKR-851 PARTS LIST TX-RX UNIT (X57-6962-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation RK73GB1J274J CHIP R 270K 1/16W R169 RK73GB1J392J CHIP R 3.9K 1/16W RK73GB1J222J CHIP R 2.2K 1/16W...
Page 30 TKR-851 PARTS LIST TX-RX UNIT (X57-6962-70) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R694,695 RK73GB1J101J CHIP R 1/16W R780 RK73GB1J102J CHIP R 1.0K 1/16W R696 RK73GB1J103J CHIP R 1/16W...
Page 31 TKR-851 PARTS LIST TX-RX UNIT (X57-6962-70) RX VCO UNIT (X58-4800-10) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation D618-623 DA204U DIODE Q600 2SK1824 D626 MINISMDE190 VARISTOR Q601 DTC114EUA DIGITAL TRANSISTOR...
Page 32 TKR-851 PARTS LIST RX VCO UNIT (X58-4800-10) TX VCO UNIT (X58-4810-10) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CN350 E40-5755-05 PIN ASSY C314 CC73GCH1H120J CHIP C 12PF CN351 E40-6098-05...
Page 33 TKR-851 PARTS LIST TX VCO UNIT (X58-4810-10) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R321 RK73GB1J273J CHIP R 1/16W R322 RK73GB1J103J CHIP R 1/16W R351 R92-1252-05 CHIP R 0 OHM J...
Page 34: Exploded View
TKR-851 EXPLODED VIEW : N09-2292-05 M2.6 x 6 : N30-2606-46 M4 x 6 : N30-4006-46 D M4 x 14 : N30-4014-46 M4 x 20 BLK : N30-4020-45 M3 x 6 (F) : N32-3006-46 G M4 x 8 (F) BLK : N32-4008-45...
Page 35 TKR-851 EXPLODED VIEW Kx14 35x2 A/2) Final (B/2) 47x2 Parts with the exploded numbers larger than 700 are not supplied.
Page 36: Packing
TKR-851 PACKING 52 Protection bag (H25-0029-04) 48 Cushion (G13-1801-04) 59 Foot (J02-0475-05) x 2 49 Cushion (G13-1802-04) 60 Foot (J02-0492-04) x 2 53 Protetion bag (H25-0747-04) 62 Grommet (J59-0302-05) x 2 61 Hardware fixture (J21-8402-04) C Binding head machine screw (N30-4006-46) x 2...
Page 37: Adjustment
Test cable for microphone input To connect the TX-RX unit A/2 (CN14) to the TX-RX unit B/ 2 (CN602) while in servicing, you can use the 36-pin flat cable, E37-0979-05, which is available from the KENWOOD parts center. Flat cable (36-pin) about 256mm...
Page 38: Test Signalling
TKR-851 ADJUSTMENT ATTEN 10dB MKR –42.17dB ATTEN 20dB MKR –26.17dBm ATTEN 10dB MKR –46.000dB RL –32.0dBm 25.00kHz 10dB/ RL 10.0dBm 10dB/ 465.00MHz RL –32.0dBm 10dB/ 15.00kHz More than More than 3dB Max. 3.75kHz 3.75kHz 3dB Max. 5.5~7.5kHz 5.5~7.5kHz 25.00kHz 465.00MHz 15.00kHz...
Page 39 (KPG-91D) for details. adjusting the power, deviation, receiver sensitivity, etc at the frequency of the channel to be used by the TKR-851. 3. Check whether the frequency rewritten under the “Test mode” of the FPU (KPG-91D) is correct, then select the...
Page 40 TKR-851 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 7. Setting 1) Remove 8 pin cable and the coaxial cable from CN16, and CN19 on TX-RX side. 8. TX 1) Connect the frequency f. counter TX-RX CN19 PC adj.
Page 41 TKR-851 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment (Wide 4kHz) 3) CH : 2 (Wide 4kHz) Rear RX ANT PC adj. SSG output : 4dB below to Adjust to point of 12dB SINAD level...
Page 42 TKR-851 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 20mV (Wide 4kHz) 2) CH : 2 (Wide 4kHz) Rear RX ANT PC adj. SSG output : –53dBm/501µV 400mV SSG MOD : 1kHz CONTROL SSG DEV : 2.4kHz...
Page 43 TKR-851 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 0.05kHz 23. DQT 1) CH : 2 MOD ANA Rear TX ANT PC adj. deviation Deviation meter filter 0.75kHz (Wide) HPF : OFF Deviation LPF : 3kHz...
Page 44 TKR-851 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 0.1kHz 28. DTMF 1) CH : 2 MOD ANA Rear TX ANT PC adj. deviation Deviation meter filter 3.0kHz (Wide) HPF : OFF Deviation LPF : 15kHz...
Page 45 TKR-851 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 0.1kHz 33. Repeat 1) CH : 2 Rear RX ANT PC adj. gain level SSG output : –53dBm 1kHz (Wide) SSG MOD : 1kHz MOD ANA...
Page 46: Terminal Function
TKR-851 TERMINAL FUNCTION Final Unit (X45-3742-71) Connector Terminal Terminal I/O Terminal function Name Connector Terminal Terminal I/O Terminal function Name STB1 Strobe data for shift register TX driver input signal (Coaxial) Clock data input Serial data input O High temperature detector signal...
Page 47 TKR-851 TERMINAL FUNCTION Connector Terminal Terminal I/O Terminal function Connector Terminal Terminal I/O Terminal function Name Name Enable input for RX PLL – No Connection Enable input for TX PLL display O Serial data output O Lock detector for RX PLL...
Page 48 TKR-851 TERMINAL FUNCTION Connector Terminal Terminal I/O Terminal function Connector Terminal Terminal I/O Terminal function Name Name O Latch data output for DA converter I/O Programable I/O 1 RF power down signal input – Control line ground O Strobe output for shift register –...
Page 49 TKR-851 TERMINAL FUNCTION Connector Terminal Terminal I/O Terminal function Connector Terminal Terminal I/O Terminal function Name Name 8V input through the ripple filter Speaker mute signal input “L”: Mute on RX PLL lock voltage No connection 9V input through the ripple filter...
Page 50: Interconnection Diagram
TKR-851 INTERCONNECTION DIAGRAM CN605 INT SP TX-RX UNIT B/2 TX-RX UN X57-696*-** X57-696 CN602 DISPLAY UNIT A/2 X54-333*-** 1.8C 1.8V AVR 8V A 3.3D 3.3V AVR 5V AVR 8CT(8C) 8V A CN600 5V AVR 5V AVR 5V AVR 3.3V AVR 3.3A...
Page 51 TKR-851 INTERCONNECTION DIAGRAM CN18 RX ANT TX-RX UNIT A/2 X57-696*-** MAIN DC CN15 MAIN DC – BACKUP BATTERY BACKUP – 8V AVR 5V AVR FINAL UNIT B/2 CN16 X45-374*-** 8V AVR 5V AVR FINAL UNIT A/2 X45-374*-** 9V AVR CN19...
Page 52 CN605 CN18 RX ANT INT SP TX-RX UNIT A/2 TX-RX UNIT B/2 X57-696*-** X57-696*-** MAIN DC CN15 MAIN DC – CN602 DISPLAY UNIT A/2 BACKUP BATTERY BACKUP – X54-333*-** 1.8C 1.8V AVR 8V AVR 3.3D 3.3V AVR 5V AVR FINAL UNIT B/2 CN16 X45-374*-** 8CT(8C)
Page 53: Pc Board
TKR-851 PC BOARD FINAL UNIT (X45-3742-71) 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 TX IN J72-0911-09 (B/2) Ref. No. Address Ref. No. Address Ref. No. Address...
Page 54 TKR-851 PC BOARD FINAL UNIT (X45-3742-71) Component side view (J72-0911-09) C118 C165 C120 C166 J72-0911-09 (A/2) Component side Layer 1 Layer 2 Layer 3 Layer 4 Foil side...
Page 55: Pc Board Final Unit (X45-3742-71)
TKR-851 TKR-851 PC BOARD PC BOARD FINAL UNIT (X45-3742-71) Component side view (J72-0911-09) FINAL UNIT (X45-3742-71) Component side view (J72-0911-09) CN8 GND CN6 MAIN DC (BLACK) (RED) CN7 BACKUP (ORANGE) Back up battery Main DC CHARGE C118 C165 C120 FAB 1...
Page 56 TKR-851 PC BOARD FINAL UNIT (X45-3742-71) Foil side view (J72-0911-09) J72-0911-09 (A/2) Ref. No. Address...
Page 57 TKR-851 PC BOARD FINAL UNIT (X45-3742-71) 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 Layer 3 Layer 4 Foil side...
Page 58 TKR-851 TKR-851 PC BOARD PC BOARD FINAL UNIT (X45-3742-71) Foil side view (J72-0911-09) FINAL UNIT (X45-3742-71) Foil side view (J72-0911-09) C115 C114 Back up battery Main DC C105 C101 C103 C102 J72-0911-09 (A/2) J72-0911-09 (B/2) Component side Ref. No. Address...
Page 59: Display Unit (X54-3330-21)
TKR-851 PC BOARD DISPLAY UNIT (X54-3330-21) Component side view (J72-0756-12) VR601 J601 IC504 D503 J72-0756-12 B/2 S501 S503 S504 S502 Q512...
Page 60 TKR-851 PC BOARD DISPLAY UNIT (X54-3330-21) Component side view (J72-0756-12) J72-0756-12 A/2 S507 POWER D505 D507 D506 MAIN BACK- IC504 IC505 D504 BUSY Component side S505 S506 Layer 1 Layer 2 Foil side Q514 Ref. No. Address IC504 IC505 Q512...
Page 61 TKR-851 TKR-851 PC BOARD PC BOARD DISPLAY UNIT (X54-3330-21) Component side view (J72-0756-12) DISPLAY UNIT (X54-3330-21) Component side view (J72-0756-12) J72-0756-12 A/2 VR601 S507 POWER D505 D507 D506 MAIN BACK- J601 IC504 IC505 D503 D504 BUSY J72-0756-12 B/2 Component side...
Page 62 TKR-851 PC BOARD DISPLAY UNIT (X54-3330-21) Foil side view (J72-0756-12) J72-0756-12 A/2 CP504 CP502 CP503 CP501 BACKUP MAIN DC R543 R606 R517 Q525 Q507 Q504 Q509 R538 BUSY R518 Q503 D508 D509 C516 C517 R525 C526 Component side C518 D502...
Page 63 TKR-851 PC BOARD DISPLAY UNIT (X54-3330-21) Foil side view (J72-0756-12) CN601 C606 C603 C602 D602 D601 R601 J72-0756-12 B/2 CN502 C513 R522 C508 R511 R512 R529 R513 Q513 R533 IC501...
Page 64 TKR-851 TKR-851 PC BOARD PC BOARD DISPLAY UNIT (X54-3330-21) Foil side view (J72-0756-12) DISPLAY UNIT (X54-3330-21) Foil side view (J72-0756-12) J72-0756-12 A/2 CN601 C606 C603 C602 CP504 CP502 D602 D601 CP503 CP501 BACKUP MAIN DC R601 R543 R606 R517 Q525...
Page 65: Tx-Rx Unit (X57-6962-70) (A/2)
TKR-851 PC BOARD TX-RX UNIT (X57-6962-70) (A/2) Component side view (J72-0924-09 A/2) CN18 CN15 NARROW WIDE R181 CN14 Ref. No. Address Ref. No. Address Ref. No. Address IC10...
Page 66 TKR-851 PC BOARD TX-RX UNIT (X57-6962-70) (A/2) Component side view (J72-0924-09 A/2) CN16 CN19 GND2 GND1 TP102 TX CV A2 : TX VCO (X58-481) C137 C139 GND2 GND1 TP101 RX CV A3 : RX VCO (X58-480) C136 C138 R129 J72-0924-09 A/2...
Page 67 TKR-851 TKR-851 PC BOARD PC BOARD TX-RX UNIT (X57-6962-70) (A/2) Component side view (J72-0924-09 A/2) TX-RX UNIT (X57-6962-70) (A/2) Component side view (J72-0924-09 A/2) CN16 CN19 GND2 GND1 TP102 CN18 TX CV A2 : TX VCO (X58-481) C137 C139 CN15...
Page 68 TKR-851 PC BOARD TX-RX UNIT (X57-6962-70) (A/2) Foil side view (J72-0924-09 A/2) R136 R135 R168 GND2 R179 R106 C127 R148 R145 C129 R121 C211 C167 C123 GND1 C120 R122 C223 C131 C234 R151 C231 + C233 R152 C232 R153 R130...
Page 69 TKR-851 PC BOARD TX-RX UNIT (X57-6962-70) (A/2) Foil side view (J72-0924-09 A/2) R171 C199 C198 C65 + R160 C197 R150 C163 C155 C154 + C218 R176 C72 + Component side Layer 1 Layer 2 Layer 3 Layer 4 Foil side...
Page 70 TKR-851 TKR-851 PC BOARD PC BOARD TX-RX UNIT (X57-6962-70) (A/2) Foil side view (J72-0924-09 A/2) TX-RX UNIT (X57-6962-70) (A/2) Foil side view (J72-0924-09 A/2) R136 R135 R168 GND2 R106 R179 C127 R148 R145 R171 C129 R121 C211 C167 C123 GND1...
Page 71: Tx-Rx Unit (X57-6962-70) (B/2)
TKR-851 PC BOARD TX-RX UNIT (X57-6962-70) (B/2) Component side view (J72-0924-09 B/2) CN600 C806 L606 IC627 5-TONE C826 3.3D D600 C785 L601 R836 L604 Q612 C613 R603 IC601 C646 C691 TRST GND NC GND GND GND EMU1 TMS TD1 DVDD TD0 TCK TCK EMU0 J72-0924-09 B/2 Ref.
Page 72 TKR-851 PC BOARD TX-RX UNIT (X57-6962-70) (B/2) Component side view (J72-0924-09 B/2) C800 CN610 R781 CN609 C817 C789 IC629 CP600 L607 IC630 C801 CP601 C795 C798 C814 R654 C811 CN603 C803 R653 R785 CN608 IC605 RSSI CN607 RSSI CN604 CN606...
Page 73 TKR-851 TKR-851 PC BOARD PC BOARD TX-RX UNIT (X57-6962-70) (B/2) Component side view (J72-0924-09 B/2) TX-RX UNIT (X57-6962-70) (B/2) Component side view (J72-0924-09 B/2) CN600 C806 C800 CN610 R781 CN609 C817 C789 L606 IC627 5-TONE IC629 CP600 L607 C826 IC630 C801 3.3D...
Page 74 TKR-851 PC BOARD TX-RX UNIT (X57-6962-70) (B/2) Foil side view (J72-0924-09 B/2) C784 CN602 C787 R754 Q606 R762 C783 D627 Q611 Q609 C791 R811 R767 C815 R802 R745 C764 R844 R668 C684 Q605 R673 R683 R747 C643 C647 C746 IC621...
Page 75 TKR-851 PC BOARD TX-RX UNIT (X57-6962-70) (B/2) Foil side view (J72-0924-09 B/2) Q601 Q602 IC632 R832 C836 IC631 R831 R828 R818 C838 C837 R819 R826 C842 C833 R616 X600 R606 IC600 C635 C634 C629 Q603 R817 C731 C741 C616 R629...
Page 76 TKR-851 TKR-851 PC BOARD PC BOARD TX-RX UNIT (X57-6962-70) (B/2) Foil side view (J72-0924-09 B/2) TX-RX UNIT (X57-6962-70) (B/2) Foil side view (J72-0924-09 B/2) Q601 Q602 IC632 C784 R832 C836 IC631 R831 R828 R818 CN602 C787 C838 C837 R819 R826...
Page 77: Rx Vco Unit (X58-4800-10)
TKR-851 PC BOARD RX VCO UNIT (X58-4800-10) RX VCO UNIT (X58-4800-10) Component side view (J72-0751-02) Foil side view (J72-0751-02) J72-0751-02 A/2 J72-0751-02 A/2 C379 R368 C377 L362 R360 R366 R361 R363 C378 R356 R357 Q353 R367 R364 L360 L361 C374...
Page 78: Tx Vco Unit (X58-4810-10)
TKR-851 PC BOARD TX VCO UNIT (X58-4810-10) TX VCO UNIT (X58-4810-10) Component side view (J72-0752-12) Foil side view (J72-0752-12) J72-0752-12 A/2 J72-0752-12 A/2 C379 R368 C377 L362 R366 C378 R376 R367 L360 L361 C374 R359 R358 C375 R377 C370 C371...
Page 79: Schematic Diagram
TKR-851 SCHEMATIC DIAGRAM FINAL UNIT (X45-3742-71) (A/2) T:7.57V T:7.91V T:7.61V R:0V R:0V R:0V 2SC3356(R24) 470p 470p 6.8n 470p 2SC5110(O) 2SK2596 T:0.70V T:0.69V R:0V R:0V Q1-3 RF AMP 2SC4116(Y) DC SWITCH SURGE VOLTAGE PROTECTOR REGULATOR T:13.03V R:13.54V NJM78L05UA 100k TK11050M Comp.out...
Page 80 TKR-851 SCHEMATIC DIAGRAM • Note : The components marked with a dot ( ) are parts of layer 1. FINAL UNIT (X45-3742-71) (A/2) DRIVE FINAL AMP PD55008S RD60HUF1-01 C160 470p 470p 470p D4,5 RF DETECTOR T:4.26V R:0V DC AMP VOLTAGE...
Page 81 FINAL UNIT (X45-3742-71) (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 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 T:4.26V RF AMP R:0V DC AMP VOLTAGE REFERENCE C120...
Page 82 TKR-851 SCHEMATIC DIAGRAM Note : The components marked with a dot ( • ) are parts of layer 1. DISPLAY UNIT (X54-3330-21) (A/2) D506 CP501 LA-501DD 470*4 S506 S502 S503 S504 S505 7SEGMENT S501 C519 0.01u SHIFT REGISTER Q517 UPA672T...
Page 83 TKR-851 SCHEMATIC DIAGRAM DISPLAY UNIT (X54-3330-21) (A/2) D507 CP502 CP503 CP504 LA-501DD 470*4 470*4 470*4 7SEGMENT DC SW C520 0.01u SHIFT Q518 Q521 REGISTER UPA672T UPA672T DC SW DC SW Q’S DC SW Q519 UPA672T DATA DC SW VOLTAGE REGULATOR...
Page 84 DISPLAY UNIT (X54-3330-21) (A/2) D506 D507 CP501 CP502 CP503 CP504 LA-501DD LA-501DD 470*4 470*4 470*4 470*4 S506 S501 S502 S503 S504 S505 7SEGMENT 7SEGMENT DC SW C519 0.01u C520 0.01u SHIFT SHIFT Q518 Q521 REGISTER REGISTER UPA672T UPA672T Q517 DC SW DC SW UPA672T DC SW...
Page 85 TKR-851 SCHEMATIC DIAGRAM Note : The components marked with a dot ( • ) are parts of layer 1. TX-RX UNIT (X57-6962-70) (A/2) A2 SUB UNIT (TX VCO/PLL) (X58-4810-10) TX-CV R368 (TP102) D350 FREQUENCY D354 CONTROL MODULATION L352 R351 CN350...
Page 86 TKR-851 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6962-70) (A/2) A3 SUB UNIT (RX VCO/PLL) (X58-4800-10) R368 L352 BUFFER CN351 R351 R354 Q355 V-RXVCOL C379 2SC4226(R24) -3.0dBm C374 R359 C368 RX-CV (TP101) 0.5p FREQUENCY VCO OSC CONTROL Q350 L356 DC SW L353 D352...
Page 87 TKR-851 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6962-70) (A/2) R144 4.7k C164 470p TX SW 1.26V R135 B:1.56V T:8.05V T:2.02V DC SW DC SW 2SB1132(Q,R) R:0V E:0.79V 2SB1386(R) DAN235K R:0V 7.84V C:6.25V C101 R106 T:0V R:2.02V R129 R130 R168 DC SW DC SW...
Page 88 TKR-851 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6962-70) (A/2) E04-0154-05 +3.0dBm CN19 FINAL UNIT (X45-3742-71) (A/2)-CN1 SHIFT CONVERTER REGISTER M62354GP BU4094BCF CN15 E40-5703-05 FINAL UNIT STRB (X45-3742-71) (A/2)-CN5 DATA CN16 E40-5632-05 FINAL UNIT (X45-3742-71) (A/2)-CN3 Q’S CN14 E40-6009-05 S76-0401-05 28.5mV DC SW...
Page 89 TX-RX UNIT (X57-6962-70) (A/2) +3.0dBm E04-0154-05 R144 4.7k CN19 C164 470p FINAL UNIT A2 SUB UNIT (TX VCO/PLL) (X58-4810-10) A3 SUB UNIT (RX VCO/PLL) (X58-4800-10) TX SW (X45-3742-71) 1.26V R135 (A/2)-CN1 B:1.56V T:8.05V T:2.02V DC SW E:0.79V 2SB1132(Q,R) R:0V DC SW 2SB1386(R) SHIFT DAN235K...
Page 90 TKR-851 SCHEMATIC DIAGRAM Note : The components marked with a dot ( • ) are parts of layer 1. TX-RX UNIT (X57-6962-70) (B/2) SURGE PROTECTOR D600 DA204U CN600 E40-6102-05 R605 BATT C600 100k 0.1u STB1 STB1 PTT/TXD1 TXD1 VOLTAGE DETECTOR...
Page 91 TKR-851 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6962-70) (B/2) 5.03V R814 R659 R660 R661 CP613 1k*2 KEY4 KEY4 R817 3.24V KEY5 KEY5 5TONE CP620 CP614 1k*2 100*2 EMON EMON R662 R618 BYTE CNVSS CNVss CP603 100*2 CP615 10*4 RESET RESET XOUT R629...
Page 92 TKR-851 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6962-70) (B/2) L606 L607 10u10 C754 C749 470p NC18 C750 0.01u NC17 CVDD7 R691 HCNTL0 HCNTL0 VSS6 BCLKR0 BCLK BCLKR1 BFSR0 BFSR1 LRCK SDT0 BDR0 R692 HCNTL1 HCNTL1 R813 BDR1 BCLKX0 BCLK C759 470p MCLK...
Page 93 TKR-851 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6962-70) (B/2) AMPSW AMPSW 5V AVR IC624 IC627 XC62FP1802P TA78L05F 1.81V 5.03V 8.03V 1.8V AVR 1.8C VOUT OUTX INVERTER IC625 IC628 IC621 3.3V AVR XC62FP3302P TA78L05F TC7S00FU 3.30V 5.02V 5V AVR NAND GATE 3.3D VOUT...
Page 94 TKR-851 SCHEMATIC DIAGRAM TX-RX UNIT (X57-6962-70) (B/2) C783 470p 13.07V 13.07V AMPSW IC629 Q610 AUDIO AMP 2SJ506(S) LA4422 DC SW 1.21V DC SW Q611 DTC114EUA Q609,610 Q609 DTC114EUA CURRENT DC SW PROTECTOR D627,628 REVERSE CURRENT C814 PROTECTOR C787 1000u25 R758...
Page 95 TX-RX UNIT (X57-6962-70) (B/2) 5.03V C783 470p 13.07V 13.07V SURGE AMPSW AMPSW PROTECTOR AMPSW IC629 Q610 AUDIO AMP 2SJ506(S) LA4422 D600 DA204U IC624 IC627 5V AVR DC SW DC SW 1.21V CN600 1.81V XC62FP1802P 1.8V AVR 5.03V TA78L05F 8.03V Q611 DTC114EUA E40-6102-05 L606...
Page 96: Block Diagram
TKR-851 BLOCK DIAGRAM TX-RX unit (CONTROL) X57 CN605 INT SP CN604 DAT,CLK,SOE RSSI Display unit Shift Reg. X54-333 (B/2) MIC JACK TEST/SPKR IC623 VR601 A01~5 BU4094BCF AF VOL D626 PTT/TXD CN603 MINISMDE190 D603 HK/RXD CN601 Display unit CN501 X54-333 (A/2)
Page 97 TKR-851 BLOCK DIAGRAM -RX unit (CONTROL) X57-696 (B/2) IC624 XC62FP1802P 1.8V 1.8C IC625 IC628 XC62FP3302P TA78L05F 3.3V IC622 Q606 3.3D TC7S66FU DTC363EK AF AMP IC626 IC630 IC629 MUTE DAT,CLK,SOE,STB2 TA78L05F XC62FP3302P RSSI LA4422 RSSI 3.3V 3.3A Q605 Q610 DTC114EUA Shift Reg.5...
Page 98 TKR-851 BLOCK DIAGRAM TX-RX unit X57-696 (A/2) 44.850MHz RF AMP MCF(W) DAN235K DAN235K L4,5 2SC357 RX ANT IF AMP IF AMP CN18 CN14 2SC3357 2SC3356 RX VCO 2SC3356(R24) 2SC3357 MCF(N) VCOA FM IC 9CLR IC9 : TK14489V VCOB RSSI 2SC3356...
Page 99: External Speaker)
TKR-851 KES-5 (EXTERNAL SPEAKER) When Using an External Speaker 1. Make sure the unit’s power is tuned off. 2. When using the external speaker, remove the jumper lead from the connector, and attach the speaker cable. 3. When not using the external speaker, replace the jumper lead and insert the connector into the speaker jack (pin9 and 12).
Page 100 TKR-851 SPECIFICATIONS (K TYPE) GENERAL Frequency Range ........ 450 to 480MHz Number of Channels ......16 channel Channel Spacing ......... Wide : 25kHz Narrow : 12.5kHz (PLL channel stepping 5kHz/6.25kHz) Operating Voltage ....... 13.6V DC± 15% (10.8~15.6V) Current Drain Standby .......... 0.8A Standby w/power save ....
Page 101 Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, KENWOOD ELECTRONICS U.K. LIMITED Kwai Fong, N.T., Hong Kong KENWOOD House, Dwight Road, Watford, Herts., KENWOOD ELECTRONICS SINGAPORE PTE LTD. WD18 9EB United Kingdom 1 Genting Lane #07-00 Kenwood Building, Singapore 349544...

Kenwood TKR-851 Service Manual

Quick Links

Related Manuals for Kenwood TKR-851

Summary of Contents for Kenwood TKR-851

Table of Contents