Kenwood TK-8302 Service Manual

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Instruction manual (128 pages)

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Summary of Contents for Kenwood TK-8302

Page 1: Table Of Contents
UHF FM TRANSCEIVER TK-8302/8302H CONNECTION CABLE KCT-60 SERVICE MANUAL © 2009-9 PRINTED IN JA PAN B51-8887-00 ( N ) 533 Modular jack Key top Panel assy Badge (E58-0535-05) (K29-9448-01) (A62-1171-03) (B43-1629-04) CONTENTS GENERAL .............2 ADJUSTMENT ..........28 SYSTEM SET-UP .........4 TERMINAL FUNCTION ......34 REALIGNMENT ...........4...
Page 2: General
Kenwood reserves the right to make changes to any wise, for any purpose without the prior written permission products herein at any time for improvement purposes.
Page 3 Plan cable runs for protection against pinching or crush- Your KENWOOD dealer can help you select an antenna sys- ing wiring, and radio installation to prevent overheating. tem that will best serve your particular needs.
Page 4: System Set-Up
Merchandise received Frequency RF power Type License and frequency allocated by FCC range (MHz) 400~470 TK-8302 M2 Choose the type of transceiver 400~470 TK-8302H K2 See page 4. Transceiver programming A personal computer, programming interface (KPG-46/46A), and FPU (programming software) are required for programming.
Page 5: Clone Mode
TK-8302/8302H REALIGNMENT Note: • You must install the KCT-53U driver in the computer to KPG-46 or KPG-46A or use the USB adapter (KCT-53U). KPG-46A + KCT-53U + Tuning cable • When using the USB adapter (KCT-53U) for the ﬁ rst time,...
Page 6: Installation
TK-8302/8302H REALIGNMENT 4-1. Adding the data password 4-2. Flow chart (Source transceiver) If the data password is set in the optional feature menu, Press [ ] key + Power ON for 2 seconds you must enter the password (Source transceiver) to acti- vate a clone mode.
Page 7 TK-8302/8302H INSTALLATION 1-2. Terminal function 3. External Speaker (Option) D-sub 15-pin Pin No. Function Molex 15-pin Pin No. 3-1. KES-3 The KES-3 is an external speaker for the 3.5-mm-diameter speaker jack. ■ Connection procedure 1. Remove the speaker-jack cap on the rear of the trans- ceiver.
Page 8: Disassembly For Repair
TK-8302/8302H DISASSEMBLY FOR REPAIR 4. To remove the speaker holder, first remove the two 1. Disassembly Procedure screws from the display PCB using a phillips screwdriver. 1. When removing the cabinet, ﬁ rst remove the two screws Then, insert a ﬂ at-head screwdriver under the tabs of the from the right and left with a phillips screwdriver.
Page 9 TK-8302/8302H DISASSEMBLY FOR REPAIR Note: 2. When mounting the panel assembly, pass the ﬂ at cable through the hole of the chassis as shown below then When you supply power to the TX-RX PCB after remov- connect the ﬂ at cable to connector of the panel assem- ing the TX-RX PCB from the chassis, solder the positive bly.
Page 10: Circuit Description
TK-8302/8302H CIRCUIT DESCRIPTION 1. Frequency Conﬁ guration Item Rating Nominal center frequency 38.85MHz The receiver utilizes double conversion. The first IF is 38.85MHz and the second IF is 450kHz. The ﬁ rst local oscil- Pass bandwidth ±6.0kHz or more at 3dB lator signal is supplied from the PLL circuit.
Page 11 TK-8302/8302H CIRCUIT DESCRIPTION 2-4. Wide/Narrow Switching Circuit The electric ﬁ eld strength of the receive signal can be known before the SQIN voltage is input to the MCU, and The Wide port (pin 99) and Narrow port (pin 98) of the the scan stop speed is improved.
Page 12 TK-8302/8302H CIRCUIT DESCRIPTION through a low-pass ﬁ lter and passed to the VCO to control 4. PLL Frequency Synthesizer the oscillator frequency. The PLL circuit generates the ﬁ rst local oscillator signal for reception and the RF signal for transmission.
Page 13 5-3. Key Matrix Circuit ■ Low-speed data (QT, DQT) The TK-8302 front panel has function keys. Each of them The demodulated signal from the FM IC (IC500) will input is connected to a cross point of a matrix of the KMI1 to to the baseband IC (IC701) to remove frequencies of 300Hz KMO3 ports of the MCU.
Page 14 TK-8302/8302H CIRCUIT DESCRIPTION ■ High-speed data (2-tone) 7. Power Supply Circuit The demodulated signal from the FM IC (IC500) is am- When the power switch on the display unit is pressed, pliﬁ ed by the baseband IC and passes through a high-pass the power port on the display unit which is connected to ﬁ...
Page 15: Semiconductor Data
3C control HSDO High speed data output PLPS Sleep mode function for PLL IC LEDO LED data KSSW Kenwood sound switch LECE LED enable AMP SW AF AMP (L: enable / H: disable) LECL LED clock EEPWP EEPROM write protect...
Page 16: Components Description
TK-8302/8302H COMPONENTS DESCRIPTION Display unit (X54-3670-20) Ref. No. Part Name Description Ref. No. Part Name Description Q510 Transistor Squelch input control switch LED driver Q511 Transistor Squelch input switch Q1,2 Transistor TX/BUSY indication LED switch Q701 MIC mute switch Q3,4...
Page 17: Parts List
TK-8302/8302H 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 18 TK-8302/8302H 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 : Eu rope Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Page 19 TK-8302/8302H PARTS LIST TX-RX UNIT (X57-7680-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation CK73HB1C103K CHIP C 0.010UF C315 CK73HB1C223K CHIP C 0.022UF CK73HB1A104K CHIP C 0.10UF C316...
Page 20 TK-8302/8302H PARTS LIST TX-RX UNIT (X57-7680-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C541 CK73HB1E103K CHIP C 0.010UF C743 CK73HB1C333K CHIP C 0.033UF C543 CC73HCH1H010B CHIP C 1.0PF...
Page 21 TK-8302/8302H PARTS LIST TX-RX UNIT (X57-7680-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C842 CS77AA1A100M CHIP TNTL 10UF 10WV C939 CK73HB1A104K CHIP C 0.10UF C843 C92-0873-05 ELECTRO...
Page 22 TK-8302/8302H PARTS LIST TX-RX UNIT (X57-7680-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation L517,518 L41-6868-14 SMALL FIXED INDUCTOR (6.8NH) R75-78 RK73HB1J000J CHIP R 1/16W L519 L41-8275-45 SMALL FIXED INDUCTOR (82NH)
Page 23 TK-8302/8302H PARTS LIST TX-RX UNIT (X57-7680-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R534 RK73HB1J391J CHIP R 1/16W R737 RK73HB1J273J CHIP R 1/16W R537 RK73HB1J104J CHIP R...
Page 24 TK-8302/8302H PARTS LIST TX-RX UNIT (X57-7680-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R826 RK73HB1J223J CHIP R 1/16W R957 RK73HB1J563J CHIP R 1/16W R827 RK73HB1J473J CHIP R...
Page 25 TK-8302/8302H PARTS LIST TX-RX UNIT (X57-7680-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation 2SJ347F ✽ MCH3914(7)-H KRX102U TRANSISTOR KTC4075E(Y,GR) TRANSISTOR Q9,10 2SC5108(Y)F TRANSISTOR SSM3J05FU-F 2SK1830F Q300 RD00HVS1-T113...
Page 26: Exploded View
TK-8302/8302H EXPLODED VIEW M2.6 x 4 (Bi) : N35-2604-43 M3 x 8 : N67-3008-48 M2 x 8 : N80-2008-48 M2.6 x 8 (Br-Tap) : N87-2608-48 J701 J700 IC705 IC301 Dx12 R374 TX-RX unit Chassis D23 101 Caution label Display unit Model name plate Parts with the exploded numbers larger than 700 are not supplied.
Page 27: Packing
TK-8302/8302H PACKING 26 Bracket (J29-0726-03) 14 Fuse (Blade type) x 2 (F52-0023-05): M2 (F52-0024-05): HK2 21 Packing fixture (H12-3178-05) 10 DC cord assy (E30-7523-55) Protection bag 21 Packing fixture (H12-3178-05) 22 Item carton case (H52-2310-12) 7 Instruction manual 33 Microphone (KMC-30)
Page 28: Adjustment
TK-8302/8302H ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Speciﬁ cations Frequency Range 400 to 520MHz Standard Signal Generator (SSG) Modulation Frequency modulation and external modulation Output –127dBm/0.1µV to greater than –7dBm/100mV Input Impedance 50Ω Power Meter Operation Frequency...
Page 29 TK-8302/8302H ADJUSTMENT Test Frequency Single or 5 Reference Level Adjustment Frequency Channel RX (MHz) TX (MHz) 435.05 435.10 Tuning point RX (MHz) TX (MHz) 400.05 400.10 400.05 400.10 469.95 469.90 Low’ 417.55 417.50 435.00 435.00 Center 435.05 435.10 435.20 435.20 High’...
Page 30 1) CH: TX low Power ±1.0W (Auto) CH: TX low’ meter 8.0A or less (Narrow) CH: TX center Ammeter CH: TX high’ • TK-8302 CH: TX high 2) Transmit • TK-8302H low, low’, center, ±2.0W high’: 45W 14.0A or less high: 40W...
Page 31 ±0.5W (Auto) CH: TX low’ meter 4.0A or less (Narrow) CH: TX center Ammeter CH: TX high’ • TK-8302 CH: TX high 2) Transmit • TK-8302H ±1.0W 8.0A or less 4. DQT 1) CH: TX low Deviation The Deviation of ±0.4dB...
Page 32 TK-8302/8302H ADJUSTMENT Receiver Section Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment 1. RX 1) CH: RX low (Wide) Auto tuning Sensitivity CH: RX low’ (Wide) Oscillo- Ext.SP (Semi-auto) CH: RX center (Wide) scope CH: RX high’...
Page 33 TK-8302/8302H ADJUSTMENT Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment Low RSSI 1) CH: RX low Auto tuning (Narrow) CH: RX low’ Oscillo- Ext.SP CH: RX center scope CH: RX high’ AF VTVM...
Page 34: Terminal Function
TK-8302/8302H TERMINAL FUNCTION Display unit (X54-3670-20) TX-RX unit (X57-7680-XX) Pin No. Name Function Pin No. Name Function CN702 POWER Detection output of power switch Ground MKEY I/O MIC data detection 9V DC power supply PTT/TXD I/O PTT/PC serial data FNC5...
Page 35 TK-8302/8302H TERMINAL FUNCTION Function Port Assignment Pin No. Name Function LEDI LED data output Scrambler Name LECE LED enable output FNC1 None LECL LED clock output FNC2 None LELH LED latch output FNC3 LERE LED reset output FNC4 Scrambler Ground...
Page 36: Pc Board
TK-8302/8302H PC BOARD DISPLAY UNIT (X54-3670-20) Component side view (J79-0249-19) POWER VOL UP VOL DOWN HOOK DISPLAY UNIT (X54-3670-20) Foil side view (J79-0249-19)
Page 37 TK-8302/8302H PC BOARD DISPLAY UNIT (X54-3670-20) Component side view (J79-0249-19) J79-0249-19 Ref. No. Address CH UP CH DOWN Component side Layer 1 Layer 2 Foil side DISPLAY UNIT (X54-3670-20) Foil side view (J79-0249-19) Ref. No. Address Component side Layer 1...
Page 38: Tx-Rx Unit (X57-7680-Xx)
TK-8302/8302H PC BOARD TX-RX UNIT (X57-7680-XX) -15: TK-8302H K2 -23: TK-8302 M2 Component side view (J79-0247-09) J701 J700 EXT.SP D-SUB C865 C863 C957 C866 C840 C867 C869 C850 C846 Q720 C835 R839 R836 C853 C817 C851 R835 IC704 C816 R933...
Page 39 TK-8302/8302H PC BOARD TX-RX UNIT (X57-7680-XX) -15: TK-8302H K2 -23: TK-8302 M2 Component side view (J79-0247-09) Ref. No. Address IC301 IC702 IC703 IC704 IC705 IC706 IC707 IC708 IC301 IC709 Q501 Q507 Q707 Q710 Q711 Q712 Q713 Q714 Q715 L308 Q717...
Page 40 TK-8302/8302H PC BOARD TX-RX UNIT (X57-7680-XX) -15: TK-8302H K2 -23: TK-8302 M2 Foil side view (J79-0247-09) R374 C383 L316 C374 TH300 L314 C372 C364 TH302 C384 R382 C392 C351 L313 C333 C303 L302 L303 L304 C367 L312 C322 C302 R964...
Page 41 TK-8302/8302H PC BOARD TX-RX UNIT (X57-7680-XX) -15: TK-8302H K2 -23: TK-8302 M2 Foil side view (J79-0247-09) Ref. No. Address Ref. No. Address C886 Q724 C885 R889 C857 IC300 C859 IC500 12F C860 IC501 10D C862 IC700 12L IC701 10N IC710...
Page 42: Schematic Diagram
TK-8302/8302H SCHEMATIC DIAGRAM TX-RX UNIT (X57-7680-XX) R7 1k PLCK R6 1k PLDT 1.8k R5 1k PLLE R973 R972 PLPS MB15E03SL-E1 3.3C L705 FIN AMP 1.59V 4.19V C933 C936 R955 Q729 470p 470p 1000p 2SC5108(Y)F 0.1u PLL IC 0.65V CLOCK AMP 3.21V...
Page 43 TK-8302/8302H SCHEMATIC DIAGRAM TX-RX UNIT (X57-7680-XX) C73 6p TX/RX R : 3.87V R : 0.67V Q9,10 VCO BUFFER AMP BAND SWITCH RX VCO R : 0V 0.92V 6.71V 0.74V 6.93V MCH3914(7)-H 2.63V T : 3.29V 270u 1SV325F 0.5p D719 2.5p...
Page 44 TK-8302/8302H SCHEMATIC DIAGRAM TX-RX UNIT (X57-7680-XX) R354 R357 *IC301 R355 R358 POWER COUPPLER MODULE D302 C373 C381 C365 FORWARD POWER 1.5p L407CDB 1000p L311 D303 L314 L315 C366 1.5T 1.5T 1.5T 1000p L407CDB D302-305 REVERSE POWER R323 SWITCH T : 0.81V T : 8.87V...
Page 45 TK-8302/8302H SCHEMATIC DIAGRAM TX-RX UNIT (X57-7680-XX) 3.3M AMPSW 3.29V C809 0.1u C810 RLED 1000p GLED BLED BLED CP705 1k KMO1 KMO1 VCC2=3.3V KMO2 KMO2 SPMUTE SP MUTE R895 1k CSN1 CSN1 KMO3 KMO3 SCLK SCLK1 R894 1k KMI1 RDATA1 RDATA...
Page 46 TK-8302/8302H SCHEMATIC DIAGRAM TX-RX UNIT (X57-7680-XX) Q715,723 IC705 SP MUTE SWITCH LA4600 C821 R842 R843 AF AMP 2.2k R : 3.28V R838 Q715 4.7k SSM3K05FU AMPSW C832 C954 C955 0.22u 1000p 1000p C882 R886 C883 0.22u J701 R : 3.28V...
Page 47 TK-8302/8302H SCHEMATIC DIAGRAM DISPLAY UNIT (X54-3670-20) D1-5 KEY BACKLIGHT 4.06V 13.53V Q3,4 KEY BACKLIGHT 7 HOOK CONTROL SWITCH HOOK B30-2282-05 B30-2282-05 4.08V KRA225S B30-2282-05 B30-2282-05 3 GND 1.2k 1.90V B30-2282-05 DA221 X57-7680-XX R933 R934 KRC102S-P INT SP TK-8302 VOLTAGE -15 TK-8302H...
Page 48: Block Diagram
TK-8302/8302H BLOCK DIAGRAM Q6,Q9 Q1,Q7 FNC1 Q2,Q8 FNC6 FNC2 FNC3 FNC4 FNC5 FNC5 FNC2 FNC8 FNC1 DATAI TXAFI RXAF FNC6 FNC7 FNC3 TXAFO DETO ALTI RXAFO...
Page 49 TK-8302/8302H BLOCK DIAGRAM IC301 S-AU83AL (TK-8302) RA60H40471101 (TK-8302H) D313,D314 HSB88AS-E (TK-8302) MA3J742 (TK-8302H) M C U TXAFI RXAFI RXAFO FNC4...
Page 50: Level Diagram
TK-8302/8302H LEVEL DIAGRAM...
Page 51: Optional Accessories
TK-8302/8302H OPTIONAL ACCESSORIES KCT-60 (Connection Cable) ■ External View...
Page 52: Specifications
Audio Output (4Ω impedance) .......... 4W with less than 5% distortion TRANSMITTER (Measurements made per EIA/TIA-603) RF Power Output TK-8302 ............... 5~25W (High: 25W, Low: 5W) TK-8302H ..............5~45W (High: 45W, Low: 25W) Spurious Response ............70dB FM Hum & Noise .............. Wide: 45dB Narrow: 40dB Audio Distortion ..............
Page 53 TK-8302/8302H TK-8302/8302H PC BOARD PC BOARD DISPLAY UNIT (X54-3670-20) Component side view (J79-0249-19) DISPLAY UNIT (X54-3670-20) Component side view (J79-0249-19) J79-0249-19 Ref. No. Address POWER CH UP VOL UP VOL DOWN CH DOWN HOOK Component side <B C> Layer 1...
Page 54 TK-8302/8302H TK-8302/8302H PC BOARD PC BOARD TX-RX UNIT (X57-7680-XX) -15: TK-8302H K2 -23: TK-8302 M2 TX-RX UNIT (X57-7680-XX) -15: TK-8302H K2 -23: TK-8302 M2 Component side view (J79-0247-09) Component side view (J79-0247-09) Ref. No. Address IC301 IC702 IC703 IC704 J701 J700 EXT.SP...
Page 55 TK-8302/8302H TK-8302/8302H PC BOARD PC BOARD TX-RX UNIT (X57-7680-XX) -15: TK-8302H K2 -23: TK-8302 M2 TX-RX UNIT (X57-7680-XX) -15: TK-8302H K2 -23: TK-8302 M2 Foil side view (J79-0247-09) Foil side view (J79-0247-09) Ref. No. Address Ref. No. Address C886 Q724...
Page 56 L705 T : 8.87V 4.7k SSM3K05FU Q721 FIN AMP KRX102U AF AMP Q721 X57-7680-XX R933 R934 KRC102S-P 1.59V SWITCH RT1N441U TK-8302 INT SP 4.19V -15 TK-8302H VOLTAGE R955 C933 C936 Q729 470p 470p 1000p D312 BLED BLED PROTECTION PLL IC 0.65V...
Page 57 IC301 S-AU83AL (TK-8302) RA60H40471101 (TK-8302H) D313,D314 HSB88AS-E (TK-8302) MA3J742 (TK-8302H) Q6,Q9 Q1,Q7 M C U FNC1 Q2,Q8 FNC6 FNC2 FNC3 FNC4 FNC5 FNC5 FNC2 FNC8 FNC1 DATAI TXAFI RXAFI FNC6 FNC7 FNC3 TXAFO DETO ALTI RXAFO FNC4...

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