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Kenwood TK-390 Service Manual

Revised ii
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See also: Instruction Manual , Quick Manual
UHF FM TRANSCEIVER
TK-390
SERVICE MANUAL
REVISED II
Antenna
(KRA-15 : Option)
Knob assy (SEL)
(K29-5282-04)
Knob assy (VOL)
(K29-5283-04)
Panel assy
(A62-0537-53)
Knob assy
(Side key)
(K29-5441-04)
Cabinet assy
(A02-2140-63)
Key top (10key)
(K29-5193-23)
Photo is TK-390 K4 type.
Does not come with antenna.
Antenna is available as an option.
© 2001-3 PRINTED IN JAPAN
B51-8424-20 ( N ) 1023
CONTENTS
GENERAL ................................................................. 2
SYSTEM SET-UP ..................................................... 2
OPERATING FEATURES ......................................... 3
REALIGNMENT ...................................................... 11
CIRCUIT DESCRIPTION ......................................... 17
SEMICONDUCTOR DATA ..................................... 25
DESCRIPTION OF COMPONENTS ....................... 26
PARTS LIST ............................................................ 28
EXPLODED VIEW .................................................. 36
PACKING ................................................................ 37
DISASSEMBLY FOR REPAIR ................................ 38
ADJUSTMENT ....................................................... 39
FINAL UNIT (X45-3590-10) ............................... 50
CONTROL UNIT (X53-3930-XX) ....................... 51
TX-RX UNIT (X57-5400-XX) ............................. 55
SCHEMATIC DIAGRAM ........................................ 61
BLOCK DIAGRAM.................................................. 67
LEVEL DIAGRAM ................................................... 69
TERMINAL FUNCTION ......................................... 70
KNB-17A (Ni-Cd BATTERY) .................................. 71
KMC-25/26 (SPEAKER MICROPHONE) ............... 72
KSC-19 (CHARGER) ............................................... 73
KSC-20 (RAPID CHARGER) ................................... 73
KPG-36 (PROGRAMMING INTERFACE CABLE) ..... 73
KRA-15 (ANTENNA) .............................................. 73
SPECIFICATIONS ............................... BACK COVER
CAUTION
When using an external power connector,
please use with maximum final module protec-
tion of 10V

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  • Page 1: Table Of Contents

    KRA-15 (ANTENNA) ..........73 SPECIFICATIONS ....... BACK COVER CAUTION When using an external power connector, Photo is TK-390 K4 type. please use with maximum final module protec- Does not come with antenna. tion of 10V Antenna is available as an option.

  • Page 2: General

    NOTE quired component for proper identification. WE CANNOT guarantee oscillator stability when using channel element manufactured by other than KENWOOD or its authorized agents. Unit X57-540X-XX X53-393X-XX...

  • Page 3: Operating Features

    TK-390 OPERATING FEATURES DTMF keypad (keypad models only) 1. Getting Acquainted Press the keys on the telephone keypad to send DTMF tones. SMA male type Battery pack antenna connector release latch Universal connector Connect the external speaker/microphone (optional) here. Otherwise, keep the supplied cover in place.

  • Page 4: Scan Operating

    TK-390 OPERATING FEATURES 2) When one priority channel is set : Either priority channel 2. Scan Operating 1 or 2 is scanned. 2-1. Scan Types If a non-priority channel stops temporarily, a priority chan- • Single Group Scan nel signal is detected at certain intervals.

  • Page 5: Optional Features

    TK-390 OPERATING FEATURES 2-9. Temporarily Delete/Add 3-4. Squelch Threshold Level It is possible to delete or add channel temporarily during Squelch threshold level value. scan. When scan stops on unnecessary channel for ex- 0 (Most loose)~15 (Most tight) ample by interference of the other party, activate the delete/ add function (for example press the key), then that channel 3-5.
  • Page 6 TK-390 OPERATING FEATURES 3-15. Mode (Enable/Disable) • Man Down Delay Time The transceiver has many special modes mainly for main- Delay time of entering the emergency mode when the tenance. internal Man Down port becomes active. · Self Programming mode ·...
  • Page 7 TK-390 OPERATING FEATURES 4. Group Features 5. Channel Features You can use these features using the programming soft- You can use these features using the programming soft- ware (KPG-38D). ware (KPG-38D). 4-1. “TOT” (Time-Out Timer) 5-1. Option Signalling The transceiver has the “TOT”. This parameter selects The transceiver is programmable to the option signalling the period of time users can continuously transmit.

  • Page 8: Key Functions

    TK-390 OPERATING FEATURES 6. Key Functions Toggle PF Keys Speaker/ Function Name Selector Switch Microphone You can use these features, using the programming soft- ware (KPG-38D). Selector function is selectable channel se- PF Keys lect or group select. The functions for Toggle switch are listed page 8 (Fig. 2).
  • Page 9 TK-390 OPERATING FEATURES 6-7. Group Down 6-14. Monitor If this key is pressed once, the group number decreases Monitor the channel before a transmission. by one step. If this key holds down for 500ms (approxi- Press this key once, “MON” appears and unmutes mate), the group number decreases continuously.
  • Page 10 Press this key again, the transceiver mutes the speaker compatible machine. and “MON” disappears and busy “LED” lights off. The data can be input to or read from TK-390 and edited on the screen. The programmed or edited data can be 6-24. Talk Around printed out.

  • Page 11: Realignment

    TK-390 REALIGNMENT 1. Mode 3. Self Programming Write mode for frequency data and signalling etc. Mainly User mode used by the person maintaining the user equipment. PC mode PC programming mode 3-1. Enter to the self programming mode PC test mode...
  • Page 12 TK-390 REALIGNMENT 3-2. Channel Setting Mode Set data for each channel while in this mode. After first entering Self programming mode, select the “CHAN” dis- play with [Top 1] [Top 2] and press [PTT] to set Channel Set- X57-540X-XX Component side ting mode.
  • Page 13 TK-390 REALIGNMENT • Operation 3-3. Group Setting Mode Set data for each Group while in this mode. After first 1. Select the setting value with the [Top 1] [Top 2] keys. entering Self programming mode, select the “GROUP” dis- 2. Press the [PTT] and the selected value is backed up and play with [Top 1] [Top 2] and press [PTT] to set Group Set- operation shifts to the next item for setting.
  • Page 14 TK-390 REALIGNMENT 3-4. Function Setting Mode • Flow Chart This mode allows making function settings for the trans- ceiver. After first entering Self programming mode, select Self programming mode “FUNC” display with [Top 1] [Top 2] and then press [PTT] to [Top 1] [Top 2] set this mode.
  • Page 15 TK-390 REALIGNMENT 3-5. Clone Mode • Group Clone 1. Connect the cloning interface cable between the master 1. To clone the transceiver group data and channel data side transceiver (source) and slave side transceiver within the group, as well as group alphanumeric data, use (clone) as shown in the figure.
  • Page 16 Setup item. Setting method refer to ADJUSTMENT. 4. Set the firmware to be updated by File select. 5. Held down the [Side 2] and [PTT]. Turn the TK-390 power on, and release [Side 2] first. Until the display change to “PROGRAM”.

  • Page 17: Circuit Description

    1. Overview The 1st mixer uses the GaAs IC (IC200). The 1st mixer The KENWOOD model TK-390 is a UHF/FM hand-held mixes the signal with the 1st local oscillator frequency from transceiver designed to operate in the frequency range of the VCO, and converts it to the 1st IF (44.85MHz).
  • Page 18 TK-390 CIRCUIT DESCRIPTION 3-4. Wide/Narrow changeover circuit • Control unit Narrow and Wide settings can be made for each channel The audio mute signal (AMP SW) from the microproces- sor becomes Low in the standby and Q5, Q6 which are by switching the ceramic filters CF300, CF301 (Wide), power supply circuit for IC1 turn off.
  • Page 19 TK-390 CIRCUIT DESCRIPTION 4-3. Drive and Final amplifier 4. Transmitter System The signal from the T/R switch (D7 is on) is amplified by 4-1. Microphone amplifier the pre-drive (Q6) and drive amplifier (Q8) to 20mW. The The signal from IC3 (control unit) goes through the mute output of the drive amplifier is amplified by the RF power switch (Q403).
  • Page 20 1 of the VCXO. The output of the VCXO is applied to pin 8 of the PLL IC. The VCO of TK-390 covers the 40MHz spread, setting 6. Power Supply Circuit frequencies in r1, r2 (receive) and t1, t2 (transmit) with a bias Battery +B is supplied via a 3A fuse from the battery ter- voltage applied to the –V terminal of the VCO.
  • Page 21 TK-390 CIRCUIT DESCRIPTION 7-3. Shift register 7. Control Circuit IC400, 403, 404 and 405 is an interface IC for output port The control unit consists of microprocessor IC406, flash expansion. It is used to expand the CPU (IC406) output memory IC414, and its peripheral circuits. It controls the TX- ports.
  • Page 22 TK-390 CIRCUIT DESCRIPTION 7-6. Low battery warning RX AUDIO DIN, DCK, The battery voltage is monitored by the microprocessor IC607 IC406 MSKE (IC406). When the battery voltage falls below the voltage IC604 (2/2) IC603 set by the Low Battery Warning adjustment, the red LED...
  • Page 23 Pin 41 : Expander output pin compressed so that the logarithmic ratio is 1/2 with refer- The TK-390 compander can be turned on or off only when ence to –10dBV, and then output onto the transmission modulation is set to Narrow by FPU setting. The compander path.
  • Page 24 TK-390 CIRCUIT DESCRIPTION 10-1. Option port 1 (For ANI board etc.) Port name Description Connection Note Abbreviation (PCB) Name DATI Data In Board data input Connected to the circuit Reference 1kHz STD Dev → Transceiver (Receiver demodulation circuit) → ANI board...

  • Page 25: Semiconductor Data

    TK-390 SEMICONDUCTOR DATA 1. Microprocessor : 784214GC0648EU (TX-RX Unit IC406) 1-1. Terminal function Pin No. Port name Function Pin No. Port name Function P120/RTP0 Modem FCLR P82/A2 – Flash ROM access port. P121/RTP1 SB control P83/A3 – P122/RTP2 D/A converter CS P84/A4 –...

  • Page 26: Description Of Components

    TK-390 SEMICONDUCTOR DATA / DESCRIPTION OF COMPONENTS 2. RF Power Amplifier (Control Unit IC501) Final Unit (X45-3590-10) : K3,K6 Ref. No. Use / Function Operation / Condition XHW2727-2 : K,K2,K4 IC801 RF power amplifier 2-1. Block diagram Control Unit (X53-3930-XX) -13 : K,K2 -14 : K4 -15 : K3 -16 : K6 Ref.

  • Page 27: Description Of Components

    TK-390 DESCRIPTION OF COMPONENTS TX-RX UNIT (X57-5400-XX) -10 : K,K4 -11 : K2 -12 : K3,K6 Ref. No. Use / Function Operation / Condition Ref. No. Use / Function Operation / Condition Level shift Q301 Noise amplifier RX on D/A converter (adjustment)

  • Page 28: Parts List

    TK-390 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 : Europe Les articles non mentionnes dans le Parts No. ne sont pas fournis.
  • Page 29 TK-390 PARTS LIST CONTROL UNIT (X53-3930-XX) TX-RX UNIT (X57-5400-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C12,13 CK73FB1C474K CHIP C 0.47UF R92-1252-05 CHIP R 0 OHM CK73FB1C104KTD CHIP C 0.10UF...
  • Page 30 TK-390 PARTS LIST TX-RX UNIT (X57-5400-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CC73GCH1H331J CHIP C 330PF C100 C92-0560-05 CHIP-TAN 10UF 6.3WV CC73GCH1H030C CHIP C 3.0PF K3,K6 C101 CK73FB1C105K CHIP C 1.0UF...
  • Page 31 TK-390 PARTS LIST TX-RX UNIT (X57-5400-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation C306-308 CK73GB1H102K CHIP C 1000PF C483 CK73GB1H102K CHIP C 1000PF C309 C92-0602-05 CHIP-TAN 1.0UF 10WV C484...
  • Page 32 TK-390 PARTS LIST TX-RX UNIT (X57-5400-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation CN404,405 E23-0342-05 TEST TERMINAL L300 L40-1095-34 SMALL FIXED INDUCTOR (1UH) L301 L40-3391-37 SMALL FIXED INDUCTOR (3.300UH)
  • Page 33 TK-390 PARTS LIST TX-RX UNIT (X57-5400-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation RK73GB1J270J CHIP R 1/16W K3,K6 R328 RK73GB1J472J CHIP R 4.7K 1/16W RK73GB1J820J CHIP R 1/16W K,K2,K4...
  • Page 34 TK-390 PARTS LIST TX-RX UNIT (X57-5400-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation R467,468 RK73GB1J473J CHIP R 1/16W R652 RK73HB1J473J CHIP R 1/16W R469 RK73GB1J102J CHIP R 1.0K 1/16W...
  • Page 35 TK-390 PARTS LIST TX-RX UNIT (X57-5400-XX) Desti- Desti- Ref. No. Address Parts No. Description Ref. No. Address Parts No. Description parts nation parts nation IC400 BU4094BCFV MOS IC IC401,402 TK11250BM MOS IC IC403-405 BU4094BCFV MOS IC IC406 784214GC0648EU IC409 PST9132NR...

  • Page 36: Exploded View

    TK-390 EXPLODED VIEW : N14-0578-04 : N14-0594-04 M2.6 x 8 BLK : N30-2608-45 D M2.6 x 5 : N67-2605-46 M2 x 3 : N78-2030-46 M2 x 3.5 : N79-2035-46 G M2 x 4 : N83-2004-46 H M2 x 5 BLK : N83-2005-45 M2.6 x 5 (Bi-Tap) : N89-2605-46...

  • Page 37: Packing

    TK-390 PACKING 7 Dressing plate Cap (SP/MIC) (B03-0594-04) (B09-0363-03) 38 Cushion (Cap) 13 Instruction manual (G13-1688-04) 16 Stopper (B62-0816-30) (D32-0421-24) 48 Protection bag (H25-0029-04) 71 Screw set (N99-2004-05) 57 Belt hook (J29-0652-35) 702 Warranty card 47 Packing fixture (H12-3018-02) 49 Item carton case...

  • Page 38: Disassembly For Repair

    TK-390 DISASSEMBLY FOR REPAIR Disassembly of Front Case and Chassis Remove the Side Key Assy 1. Remove the 2 screws ( ) and a cap fixed screw ( 1. The side key assy is clips form a slide-hook structure. Lift 2.

  • Page 39: Adjustment

    TK-390 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications Standard Signal Generator Frequency Range Maximum 600MHz or more. (SSG) Modulation Frequency modulation and external modulation. Output –133dBm/0.05µV to 7dBm/501mV Power Meter Input Impedance 50Ω. Operation Frequency Up to 600MHz.
  • Page 40 ADJUSTMENT • Panel tuning Repair Jig (Chassis) Use jig (part No.: A10-1399-03) for repairing the TK-390 Place the TX-RX unit on the jig and fit it with 7 screws. Note : Supply power from an external power supply (Battery terminal : +, jig (chassis) : –)
  • Page 41 TK-390 ADJUSTMENT • Clear function Panel Test Mode Pressing [PTT] while holding down [Orange] in Panel test This mode is used for making transceiver connection mode, triggers the clear function which clears all transceiver tests and clearing the memory. data settings.
  • Page 42 TK-390 ADJUSTMENT Common Section Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 0.1V 1. Varicap shift 1) Set panel tuning mode DC VTVM TX-RX TP2 Panel Top1/ –3V voltage Push Side2 to select Top2 VSWM ±...
  • Page 43 TK-390 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 4. TX high 1) Set panel test mode Power meter Panel Check 3.7W~5.2W power CH No. : 1 2.3A or less check Signalling No. : 1...
  • Page 44 TK-390 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 50Hz 8. Maximum 1) Set panel test mode Power meter Panel Panel Top1/ 3.95kHz deviation CH No. : 3 Deviation Top2 (According to the adjustment Signalling No.
  • Page 45 TK-390 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 0.05kHz 11. QT 1) Set panel tuning mode Power meter Panel Panel Top1/ 0.75kHz deviation CH No. : 3 Deviation Top2 adjustment Signalling No. : 1...
  • Page 46 TK-390 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment ± 50Hz 16. DTMF 1) Set panel tuning mode Power meter Panel Panel Top1/ 1.5kHz deviation CH No. : 3 Deviation Top2 adjustment Signalling No. : 1...
  • Page 47 TK-390 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 22. BATT 1) Set panel test mode Power meter Panel Check Cannot transmit detection CH No. : 3 LED (TX) blinks check Signalling No. : 1 DC VTVM Bottom BATT BATT terminal voltage : 5.3V...
  • Page 48 TK-390 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 4. Sensitivity 1) Set panel test mode Panel Panel Top1/ Adjust for maximum 12dB SINAD or more adjustment CH No. : 3 Top2 SINAD and check Signalling No.
  • Page 49 TK-390 ADJUSTMENT Measurement Adjustment Item Condition Specifications/Remarks Test- Unit Terminal Unit Parts Method equipment 9. Squelch 1) Set panel test mode Panel Panel Top1/ Adjust to point of adjustment CH No. : 3 Top2 opening squelch (narrow) Signalling No. : 1...
  • Page 50 TK-390 PC BOARD VIEW FINAL UNIT (X45-3590-10) Component side view : K3,K6 IC801 J72-0654-12 C802 C801 Vcont...

  • Page 51: Pc Board Views

    TK-390 PC BOARD VIEWS CONTROL UNIT (X53-3930-XX) -13 : K,K2 -14 : K4 -15 : K3 -16 : K6 Component side view TOP2 TOP1 TOGGLE SW Ref No. Address D102 D103 D104 INT MIC (N/C) – J72-0705-22 A/6 Component side Ref No.
  • Page 52 TK-390 PC BOARD VIEWS CONTROL UNIT (X53-3930-XX) -13 : K,K2 -14 : K4 -15 : K3 -16 : K6 Foil side view R106 R108 BLED R103 L501 TXLED LAMP R104 IC101 IC501 TOGGLE TOGGLE DGND DGND Ref No. Address IC101 D101 Ref No.
  • Page 53 TK-390 PC BOARD VIEW TX-RX UNIT (X57-5400-XX) -10 : K,K4 -11 : K2 -12 : K3,K6 Component side view C471 C467 DATI CODE4 C466 C469 CODE3 DATO C465 L152 C470 C245 R219 TCNT CODE2 IC404 CN401 C464 CODE1 STONE R404...

  • Page 54: Tx-Rx Unit (X57-5400-Xx)

    TK-390 PC BOARD VIEW TX-RX UNIT (X57-5400-XX) -10 : K,K4 -11 : K2 -12 : K3,K6 Foil side view C239 C253 L216 R216 L210 L209 IC414 D203 C219 C226 R223 Q201 C237 R403 R430 R212 C227 IC10 R222 C218 R209...
  • Page 55 TK-390 PC BOARD VIEW TX-RX UNIT (X57-5400-XX) -10 : K,K4 -11 : K2 -12 : K3,K6 Component side view + Foil side C471 C467 DATI CODE4 C239 C466 C469 CODE3 DATO C465 L152 C470 C245 R219 TCNT CODE2 IC404 C253...
  • Page 56 TK-390 Note : Components marked with a dot (·) are parts of pattern 1. SCHEMATIC DIAGRAM...

  • Page 57: Schematic Diagram

    TK-390 SCHEMATIC DIAGRAM Note : Components marked with a dot (·) are parts of pattern 1.

  • Page 58: Block Diagram

    TK-390 TK-390 BLOCK DIAGRAM RF X57-540 Fuse X53-393 C/6, X45-539 K,K4 : 450~490MHz K,K2,K4 : XHW2727-2 Power Amp : 470~512MHz INT.ANT +BATT K3,K6 : M68732L K3,K6 : 403~430MHz Protect IC10 K,K4 : KCH41 (IC501) : KCH35 Drive Amp Drive Amp...

  • Page 59: Level Diagram

    TK-390 LEVEL DIAGRAM...

  • Page 60: Terminal Function

    TK-390 TERMINAL FUNCTION CN No. Pin No. Name I/O Function CN No. Pin No. Name I/O Function BTL input + for external speaker. TX-RX UNIT (X57-5400-XX) SP– BTL input – for external speaker. CN400 CH D CH switch data. MUTE O Audio mute signal output.

  • Page 61: Knb-17A (Ni-Cd Battery)

    TK-390 TERMINAL FUNCTION / KNB-17A (Ni-Cd BATTERY) KNB-17A External View CN No. Pin No. Name I/O Function – Not use. Key scan IC clock data input. Key scan IC reset input. INAFC Internal speaker switch input. EXAFC External speaker switch input.
  • Page 62 TK-390 KMC-25/26 (SPEAKER MICROPHONE) KMC-25 External View KMC-25/26 Circuit Diagram Universal SP/MIC connector EXT. ANT (KMC-26) SP– If the earphone jack output is too high, adjust the value of resistor R12. Earphone R12 0 jack ø3.5 2.2K 10µ Shield –...

  • Page 63: Antenna)

    TK-390 KSC-19 (CHARGER) / KSC-20 (RAPID CHARGER) / KPG-36 (PRO- GRAMMING INTERFACE CABLE) / KRA-15 (WHIP ANTENNA) KSC-19 External View KPG-36 External View KSC-19 Charging KNB-17A Voltage ..........7.2V Battery capacity ........1500mAh Charging time ........Approx. 8 hours KSC-20 External View...

  • Page 64: Specifications

    Mechelsesteenweg 418 B-1930 Zaventem, Belgium KENWOOD ELECTRONICS FRANCE S.A. 13, Boulevard Ney, 75018 Paris, France KENWOOD ELECTRONICS U.K. LIMITED KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands KENWOOD ELECTRONICS ITALIA S.p.A.

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