Kenwood TK-380 Service Manual
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Kenwood TK-380 Service Manual

Uhf fm transceiver
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See also: Service Manual , Instruction Manual
UHF FM TRANSCEIVER
TK-380
SERVICE MANUAL
REVISED
Knob (PTT etc)
(K29-5157-03)
Photo is K4 type with KRA-15
Whip antenna
(T90-0682-05):M
(T90-0684-05):M3
Knob (ENC)
(K29-5232-03)
Knob (VOL)
(K29-5231-03)
Panel assy
(A62-0535-04)
Badge
(B43-1106-14)
Cabinet assy
(A02-2054-53)
:K,K2,K3,M,M3
(4 keys)
(A02-2055-53)
:K4,K5,K6
(16 keys)
Packing
(G53-0840-02):K,K2,K3,M,M3 (4 keys)
(G53-0841-02):K4,K5,K6 (16 keys)
©
1999-4 PRINTED IN JAPAN
B51-8455-10(S) 1367
This service manual is same at the TK-380(B51-8455-00)
service manual with destination K, K4 and M with the
exception of new destination, K2, K3, K5, K6 and M3.
CONTENTS
GENERAL ................................................................................. 2
SYSTEM SET-UP ..................................................................... 2
OPERATING FEATURES ......................................................... 3
REALIGNMENT ...................................................................... 11
CIRCUIT DESCRIPTION ........................................................ 16
SEMICONDUCTOR DATA ..................................................... 22
DESCRIPTION OF COMPONENTS ....................................... 27
PARTS LIST ............................................................................ 28
EXPLODED VIEW .................................................................. 36
PACKING ................................................................................ 37
ADJUSTMENT ........................................................................ 38
TERMINAL FUNCTION .......................................................... 48
DISPLAY UNIT (X54-3210-XX) ......................................... 49
TX-RX UNIT (X57-5750-XX) ............................................. 55
SCHEMATIC DIAGRAM ......................................................... 61
BLOCK DIAGRAM .................................................................. 65
LEVEL DIAGRAM ................................................................... 67
OPTIONS ................................................................................ 68
SPECIFICATIONS ............................................... BACK COVER
CAUTION
When using an external power connector,
please use with maximum final module
protection of 9V.

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Summary of Contents for Kenwood TK-380

  • Page 1: Table Of Contents

    © REVISED 1999-4 PRINTED IN JAPAN B51-8455-10(S) 1367 This service manual is same at the TK-380(B51-8455-00) service manual with destination K, K4 and M with the exception of new destination, K2, K3, K5, K6 and M3. CONTENTS GENERAL ................. 2...

  • Page 2: General

    When ordering replacement parts or equipment information, WE CANNOT guarantee oscillator stability when using the full part identification number should be included. This channel element manufactured by other than KENWOOD or applies to all parts : components, kits, or chassis. If the part its authorized agents.

  • Page 3: Operating Features

    (or group number). 1. Operation Features System numbers (or group numbers) not set are skipped. The TK-380 is an UHF FM radio designed to operate in Caution : The FPU (KPG-49D) allows selecting between both trunking format and conventional format. The system selector and group selector.
  • Page 4 TK-380 OPERATING FEATURES 0 S, A, 2 B, and C 3 key (Programmable) the underscore disappears and the AUX ports turns to the deactive level. - DTMF keypad (keypad model only) Press the keys on the telephone keypad to send DTMF 3) Channel up/down (Conventional Format) tones.
  • Page 5 TK-380 OPERATING FEATURES 9) Group up/down previously transmitted DTMF code. Pressing [PTT] at this time, When the key is pressed each time, the group number to transmits the code that is currently displayed. be selected is incremented/decremented and repeats if held for one second or longer.

  • Page 6: Scan Operating

    TK-380 OPERATING FEATURES 25) Telephone disconnect (Trunking Format) or scrambler ( _ ) function. The delete/add indicator shows Pressing this key ends an RIC connection (disconnects the the systems locked out of the scanning sequence. Selective telephone line). call and scrambler are optional functions that can be programmed.
  • Page 7 TK-380 OPERATING FEATURES 7) Group scan operation ● User selectable lockout If the scan lockout feature is programmed to a key, the user Group scan can be programmed for each group. In addition can lock systems out of the scan sequence with the key. To...
  • Page 8 TK-380 OPERATING FEATURES 2 Non-priority channels detects a signal during scan. For the 9) Temporarily Delete/Add channels that can be selected with the group or channel It is possible to delete or add channel temporarily during selector when the scan does not occur, adds an indicator scan.
  • Page 9 TK-380 OPERATING FEATURES 6) Battery Warning selected system (If during scanning, the scan stops). This transceiver has battery warning feature. If the low 4) Transpond voltage is detected during transmission, the transceiver warns it by flashing red "LED". This feature can be programmed to turn on and off for each Then more low voltage is detected during transmission, the group.

  • Page 10: Audible User Feedback Tones

    TK-380 OPERATING FEATURES 3) "TOT" Reset Time Alert/Transpond AF Mute Open The transceiver has "TOT" reset timer. This timer is the Triggers at match with QT/ Triggers at match with QT/ minimum wait time allowed during a transmission that will reset DQT/ID+DTMF(2tone);Both DQT/ID+DTMF(2tone);Both...

  • Page 11: Realignment

    TK-380 OPERATING FEATURES/REALIGNMENT In conventional mode (of conventional format), this informs • Pre Alert tone (Conventional Format) the user of a Busy Channel Lockout. Informs user when nearing transmit inhibit (transmit cutoff) time due to TOT. • Group Call Tone...
  • Page 12 4. Set the firmware to be updated by File select (=F1). The KPG-36 is required to interface the TK-380 to the 5. Turn the TK-380 power ON with the [S] switch held down. computer. It has a circuit in its D-subconnector (25-pin) case Hold the switch down for two seconds until the display that converts the RS-232C logic level to the TTL level.

  • Page 13: Clone Mode

    8. Self Programming Mode Write mode for frequency data and signalling etc. Mainly 1. Turn the master TK-380 power ON with the [C] key held used by the person maintaining the user equipment. down. If the password is set to the TK-380, the TK-380 displays "CLONE LOCK".
  • Page 14 TK-380 REALIGNMENT Items set in Channel Setting Mode are as follows. Function settings Display Remarks Channel select CH or GRP X57-5750-10 RX Frequency RXF [LAMP] : Freq. On/Off switching Foil Side [A] : 5kHz/6.25kHz/7.5kHz/1MHz step switching RX Signalling RXS [LAMP] : OFF/QT/DQT switching...
  • Page 15 TK-380 REALIGNMENT 8-3. Function Setting Mode ● Flow Chart This is a mode for using the panel keys to make function settings without using the FPU, that operate on all channels. Self programming mode [LAMP] Pressing the [LAMP] when [SELF PROG] is displayed, sets the Function Setting Mode.

  • Page 16: Circuit Description

    TK-380 CIRCUIT DESCRIPTION 1. Overview then the bandpass filter (L47,48,49,51,52,54,55,56). The bandpass filter is adjusted by a variable capacitor. The input This transceiver is UHF/FM portable transceiver designed to voltage to the variable capacitor is regulated by the voltage operate in the frequency range of 450 to 490MHz (F1), 470 to output from the D/A converter (IC8).
  • Page 17 TK-380 CIRCUIT DESCRIPTION R117 Q305 C100 Q304 C119 INT.SP IC12 FM IF SYSTEM EXT.SP "H" : Wide "L" : Narrow Q308 IC300 Q301 Fig. 4 Audio amplifier circuit 3-5. Squelch circuit The output from IC12 enters FM IC again, then passed through a band-pass filter.
  • Page 18 1 of the VCXO. The output of the VCXO EXT. is applied to pin 8 of the PLL IC. IC13 The TK-380’s VCO consists of 2VCO and covers a dual range Q300 LIMIT COMP of the 405.15~445.15MHz (K, K4, M), 425.15~467.15MHz (K2, K5), 355.15~385.15MHz (K3, K6, M3), and the 450~490MHz...
  • Page 19 TK-380 CIRCUIT DESCRIPTION 6-2. Low battery warning BUFF drive The battery voltage is monitored by the microprocessor (TX : Low) (IC19). When the battery voltage falls below the voltage set by BUFF the Low Battery Warning adjustment, the red LED flashes to notify the operator that it is time to replace the battery.
  • Page 20 TK-380 CIRCUIT DESCRIPTION 7-2. Decode 7. Signalling Circuit ● Low-speed data (QT,DQT,LTR) 7-1. Encode The demodulated signal from the IF IC (IC12) is amplified ● Low-speed data (QT,DQT,LTR) by IC4 (2/2) and passes through a low-pass filter (IC11) to Low-speed data is output from pin 1 of the CPU. The signal remove audio components.
  • Page 21 TK-380 CIRCUIT DESCRIPTION 8. Power Supply Circuit 9. Optional Board Terminal Battery +B is supplied via a 3A fuse from the battery terminal Terminals for mounting the option board are provided at connected to the TX-RX unit. After passing through the power the bottom edge of the TX-RX unit.

  • Page 22: Semiconductor Data

    TK-380 SEMICONDUCTOR DATA Microprocesser : 30612M4A-407GP (TX-RX UNIT : IC19) ■ Pin function Port Port Function Function Name Name LSDOUT O Low speed data output. GND. HSDOUT High speed data output. 63~70 A0~A7 Flash memory address bus. HSDIN High speed data input.

  • Page 23: Block Diagram

    TK-380 SEMICONDUCTOR DATA Audio Processor : TC35453F (TX-RX Unit IC13) ■ Block diagram ■ Pin function Port Port Function Function No. Name No. Name RXFO RX audio filter output. Data synchronized clock input. RXGS RX audio signal level setting amplifier...
  • Page 24 TK-380 SEMICONDUCTOR DATA D/A Converter : M62364FP (TX-RX Unit IC8) ■ Block diagram ■ Pin function Pin No. Pin code I/O Function Pin No. Pin code I/O Function D/A converter input. 10,11 VO3,VO4 8-bit resolution D/A. VO1,VO2 8-bit resolution D/A.

  • Page 25: Pin Description

    TK-380 SEMICONDUCTOR DATA PLL System : SA7025DK (TX-RX Unit IC14) Audio Power Amplifier : TDA7053AT ■ Block diagram (Display Unit IC300) ■ Block diagram ■ Pin description ■ Pin description Pin No. Symbol Description Pin No. Symbol Description CLOCK Serial clock input.
  • Page 26 TK-380 SEMICONDUCTOR DATA Voltage Detector : RN5VL42C VCO System : X58-4590-XX (SUB Unit : A1) ■ Circuit diagram (TX-RX Unit IC3) ■ Block diagram (CMOS output) ■ Pin function Pin No. Pin code Function Output. Power supply. Ground. Counter : MC74HC4017F (Display Unit IC301) ■...

  • Page 27: Description Of Components

    TK-380 DESCRIPTION OF COMPONENTS DISPLAY UNIT (X54-3210-XX) Ref. No. Use/Function Operation/Condition Ref. No. Use/Function Operation/Condition IC300 Audio power amplifier Transistor Ripple filter IC301 Counter /Key scan Transistor DC switch / W/N audio amplitude adjust Q300 DC switch / INT MIC on/off...

  • Page 28: Parts List

    TK-380 PARTS LIST CAPACITORS CC 45 TH 1H 220 J • Capacitor value Color* CC45 010 = 1pF 0 = 22pF 100 = 10pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating Multiplier 101 = 100pF 2 = Shape ... round, square, ect.
  • Page 29 Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R31-0617-05 VARIABLE R (POWER SW/VOL) TK-380 (Y50-488) A02-2054-53 CABINET ASSY(4 KEYS) K,K2,K3,M,M3 S70-0414-05 TACT SWITCH (AUX SW) A02-2055-53 CABINET ASSY(16 KEYS) K4,K5,K6 A62-0535-04 PANEL ASSY T07-0347-05...
  • Page 30 TK-380 PARTS LIST DISPLAY UNIT (X54-3210-XX) TX-RX UNIT (X57-5750-XX) TX-RX UNIT (X57-5750-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R313,314 RK73GB1J102J CHIP R 1.0K 1/16W C92-0592-05 CHIP-TAN 4.7UF 6.3WV R315 RK73GB1J104J...
  • Page 31 TK-380 PARTS LIST TX-RX UNIT (X57-5750-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C171 CC73GCH1H070B CHIP C 7.0PF K,K3,K4,K6,M,M3 CK73GB1H272J CHIP C 2700PF J C171 CC73GCH1H090B CHIP C 9.0PF K2,K5 CK73GB1H471K...
  • Page 32 TK-380 PARTS LIST TX-RX UNIT (X57-5750-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C221 CK73GB1H471K CHIP C 470PF L40-2271-36 SMALL FIXED INDUCTOR(22NH/8) C222 CC73GCH1H030B CHIP C 3.0PF K,K4,M L40-1081-36 SMALL FIXED INDUCTOR(100NH)
  • Page 33 TK-380 PARTS LIST TX-RX UNIT (X57-5750-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts RK73GB1J472J CHIP R 4.7K 1/16W RN73GH1J682D CHIP R 6.8K 1/16W RK73GB1J474J CHIP R 470K 1/16W RK73GB1J101J CHIP R...
  • Page 34 TK-380 PARTS LIST TX-RX UNIT (X57-5750-XX) TX-RX UNIT (X57-5750-XX) SUB UNIT (X58-4590-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R177 RK73GB1J101J CHIP R 1/16W HZU5ALL DIODE R180 RK73GB1J473J CHIP R 1/16W...
  • Page 35 TK-380 PARTS LIST TX-RX UNIT (X57-5750-XX) TX-RX UNIT (X57-5750-XX) SUB UNIT (X58-4590-XX) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts CC73HCH1H030B CHIP C 3.0PF K,K4,M 2SK508NV(K52) CC73HCH1H080B CHIP C 8.0PF K2,K5 UMC4...

  • Page 36: Exploded View

    TK-380 EXPLODED VIEW Parts with the exploded numbers larger than 700 are not supplied.

  • Page 37: Packing

    TK-380 PACKING 6 Warranty card (B46-0470-00):K,K2,K3,K4,K5,K6 7 Instrution mamual (B62-0967-00):K,K2,K3, 36 Carton Board K4,K5,K6 (H13-1072-04) (B62-0988-00):M,M3 3 Cap (B09-0363-03) 48 Screw set (N99-2004-05) 35 Packing fixture (H12-3014-02) ANT Whip antenna (T90-0682-05):M 40 Hook (T90-0684-05):M3 (J29-0618-15) 37 Item carton case UPC code label...

  • Page 38: Adjustment

    TK-380 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications Standard Signal Generator Frequency Range 400 to 512MHz (SSG) Modulation Frequency modulation and external modulation. Output -127dBm/0.1µV to greater than -47dBm/1mV Power Meter Input Impedance 50Ω. Operation Frequency 400 to 512MHz or more.
  • Page 39 ADJUSTMENT • Panel tuning Repair Jig (Chassis) Use jig (part No.: A10-1383-14) for repairing the TK-380. Place the TX-RX unit on the jig and fit it with 7 screws. The jig facilitates the voltage check and protects the module 2: RED (RX AF OUTPUT) when the voltage on the flow side of the TX-RX unit is checked during pepairs.

  • Page 40: Test Mode

    TK-380 ADJUSTMENT • Sub LCD indicator Test Mode “FCN” appears at Function ON. ■ Test mode operating features “n” appears at Narrow ON. This transceiver has a test mode. To enter test mode, press [A] key and turn power on. Hold [A] key until test ■...
  • Page 41 TK-380 ADJUSTMENT Signalling Panel Tuning Mode Signalling No. UHF-F1 K,K4,M None None TEST Ch RX frequency (MHz) TX frequency (MHz) None 100Hz square 450.05000 450.10000 LTR data LTR data 460.05000 460.10000 QT 67.0Hz QT 67.0Hz 470.05000 470.10000 QT 151.4Hz QT 151.4Hz 480.05000...
  • Page 42 TK-380 ADJUSTMENT ■ Tuning mode FREQ Frequency adj. HPOW L HPOW L2 HPOW C HPOW H2 HPOW H HPOW Hi Power Hi Power (Low) Hi Power (Low 2) Hi Power (Cen) Hi Power (Hi 2) Hi Power (Hi) LPOW L LPOW...
  • Page 43 TK-380 ADJUSTMENT Common Section Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 1. Setting 1) BATT terminal voltage:7.5V 2) SSG Standard modulation [Wide] MOD:1kHz, DEV:3kHz [Narrow] MOD:1kHz, DEV:1.5kHz 2. VCO lock [Panel Test Mode] voltage...
  • Page 44 TK-380 ADJUSTMENT [Panel Tuning Mode except when Panel TEST Mode is specified.] Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 7. Max DEV 1) Adj item [MAX] Power meter Panel Panel Encoder 3.8kHz ±50Hz Adjust Adjust [∗∗∗]...
  • Page 45 TK-380 ADJUSTMENT [Panel Tuning Mode except when Panel TEST Mode is specified.] Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 12.LTR 1) Adj item [FLTR] Power meter Panel Panel Encoder 1.0kHz ±0.1kHz Deviation Adjust [∗∗∗]...
  • Page 46 TK-380 ADJUSTMENT Receiver Section [Panel Tuning Mode except when Panel TEST Mode is specified.] Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 1. Sensitivity 1) Adj item [SENS] Tracking Panel Panel Encoder Adjustment Adjust Adjust [∗∗∗]...
  • Page 47 TK-380 ADJUSTMENT Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 1) Adj item [SENS] Adjustment Adjust [∗∗∗] Low-edge·f Turn a knob 2) Low-edge frequency and make Adj item [L SENS] peak point. ∆ 20.0 MHz REF –15.0 dBm...

  • Page 48: Terminal Function

    TK-380 TERMINAL FUNCTION CN No. Pin No. Name I/O Function CN No. Pin No. Name I/O Function TX-RX UNIT (X57-5750-XX): TX-RX section PTT signal output. Not use. Power input after passing through LCD driver chip select input. the fuse. Audio mute signal input.

  • Page 49: Pc Board Views

    TK-380 PC BOARD VIEW DISPLAY UNIT (X54-3210-XX) (-10) : K,K2,K3, M,M3 (-11) : K4,K5,K6 Component Side View DISPLAY UNIT (X54-3210-XX) X54-3210-XX (B/2) S301 S302 S303 J72-0517-12 LAMP LCD ASSY CN302 ∗ D301 X54-3210-XX (A/2) – J72-0517-12 Component side Pattern 1...
  • Page 50 TK-380 PC BOARD VIEW DISPLAY UNIT (X54-3210-XX) (-10) : K,K2,K3, M,M3 (-11) : K4,K5,K6 Foil Side View CN303 X54-3210-XX (B/2) J72-0517-12 DISPLAY UNIT (X54-3210-XX) D321 R300 R302 R304 CN301 CN300 R303 R305 R301 C302 R311 R312 Q300 R306 CP300 L309...
  • Page 51 TK-380 PC BOARD VIEW DISPLAY UNIT (X54-3210-XX) (-10) : K,K2,K3, M,M3 (-11) : K4,K5,K6 Component Side + Foil Side View CN303 X54-3210-XX (B/2) S301 S302 S303 J72-0517-12 LAMP DISPLAY UNIT (X54-3210-XX) D321 R300 R302 LCD ASSY R304 CN301 R303 CN300...

  • Page 52: Tx-Rx Unit (X57-5750-Xx)

    TK-380 PC BOARD VIEW TX-RX UNIT (X57-5750-XX) (-10) : K,K4,M (-11) : K2,K5 (-12) : K3,K6,M3 Component Side View TX-RX UNIT (X57-5750-XX) MONI R266 C241 LAMP IC100 R270 C230 C223 X57-5750-XX C227 R259 C102 J72-0614-02 C141 C215 C124 C119 C125...
  • Page 53 TK-380 PC BOARD VIEW TX-RX UNIT (X57-5750-XX) (-10) : K,K4,M (-11) : K2,K5 (-12) : K3,K6,M3 Foil Side View TX-RX UNIT IC16 R100 (X57-5750-XX) C248 R114 R109 R276 C120 R299 R154 R116 R280 C261 IC17 C137 C115 C121 X57-5750-XX CN10...
  • Page 54 TK-380 PC BOARD VIEW TX-RX UNIT (X57-5750-XX) TX-RX UNIT (X57-5750-XX) (-10) : K,K4,M (-11) : K2,K5 (-12) : K3,K6,M3 Component Side + Foil Side View IC16 R100 MONI R266 C241 C248 LAMP R270 IC100 R109 R114 C230 R276 C120 R299...

  • Page 55: Block Diagram

    TK-380 TK-380 BLOCK DIAGRAM...

  • Page 56: Level Diagram

    TK-380 TK-380 LEVEL DIAGRAM KNB-16A/17A (Ni-Cd BATTERY) / KPG-36 (PROGRAMMING INTER- FACE CABLE) / KSC-19 (CHARGER) / KRA-15 (WHIP ANTENNA) KNB-16A KNB-17A KPG-36 External View External View External View KNB-16A KNB-17A KSC-19 External View Circuit Diagram Circuit Diagram Discharge pin side...

  • Page 57: Specifications

    TK-380 KMC-25 (SPEAKER MICROHONE) Circuit Diagram External View Specifications Microphone Impedance ......2kΩ Sensitivity ........ -65dB±4.0dB at 1kHz Speaker Impedance ......16Ω Input ........0.5W Maximum input ......1.5W Dimensions ........62W x 81 H x 29 D (mm) Weight (With plug cord) ....Approx. 0.17kg...
  • Page 58 KENWOOD ELECTRONICS FRANCE S.A. 13, Boulevard Ney, 75018 Paris, France KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD. KENWOOD ELECTRONICS U.K. LIMITED Sales Marketing Division 1 Ang Mo Kio Street 63, Singapore 569110 KENWOOD House, Dwight Road, Watford, Herst., WD1 8EB United Kingdom...

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