Kenwood ProTalk TK-3401D Service Manual Download Page 13

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(No.RA012<Rev.001>)1-13

FET

DC switch (Assist)

Transistor

PLL Fin amplifier

FET

Q1 control

Transistor

Rippler filter

FET

RX VCO

FET

TX VCO

FET

Q8 control

FET

TX/RX VCO DC switch

Transistor

Buffer amplifier

Q10

Transistor

RF amplifier

Q201

Transistor

Pre-drive amplifier

Q203

Transistor

Discharge switch

Q205

FET

APC control switch

Q206

FET

Drive amplifier

Q207

Transistor

DC switch (APC)

Q208

FET

Final amplifier

Q209

FET

DC switch (Power control)

Q210

Transistor

DC switch (Power control)

Q400

Transistor

Tripler (2nd local)

Q403

Transistor

1st IF amplifier

Q404

FET

1st mixer

Q405

FET

RX RF amplifier

Q600

Transistor

DC switch (BUSY LED)

Q601

FET

DC switch (50T)

Q602

FET

DC switch (50R)

Q603

FET

DC switch (MIN VOL)

Q604

Transistor

DC switch (RED LED)

Q605

Transistor

DC switch (BLUE LED)

Q606

FET

DC switch (33MS )

Q703

FET

Level shift (TXD)

Q704

Transistor

MIC mute switch

Q705

Transistor

MIC AGC amplifier

Q706

Transistor

MIC AGC amplifier

Q707

FET

Level shift (RXD)

Q708

Transistor

DC switch (EXT PTT)

Q709

Transistor

Q710 control

Q710

Transistor

DC switch (IC707 SB)

Q711

Transistor

Q715 control

Q712

Transistor

Pop noise mute control

Q713

FET

AF switch (EXT SP)

Q714

Transistor

DC switch (IC709 SB)

Q715

Transistor

Q714 control

Q716

FET

AF switch (EXT SP)

Variable capacitance diode RX VCO tune

Variable capacitance diode TX VCO tune

Ref.

No.

Part Name

Description

Variable capacitance diode RX VCO tune

Variable capacitance diode TX VCO tune

D10

Diode

Speed up

D11

Variable capacitance diode TX assist

D12

Variable capacitance diode RX assist

D13

Variable capacitance diode Modulation

D14, 15 Diode

TX/RX switch

D200

Zener diode

Over voltage protection

D201-
204

Diode

Antenna switch

D400-
404

Variable capacitance diode RX BPF tuning

D405

Variable capacitance diode RX notch tune

D600

Diode

Voltage drop

D601

LED

Green (BUSY)

D602

LED

Red (TX)

D603

Diode

Voltage prevention

D604

LED

Blue

D700,
701

Diode

AF detector (MIC)

D702

Diode

AF detector (VOX)

D703

Diode

Limiter

Ref.

No.

Part Name

Description

Summary of Contents for ProTalk TK-3401D

Page 1: ...01D COPYRIGHT 2014 JVC KENWOOD Corporation Note Lead free solder used in the board material Sn Ag In Bi melting point 227 Centigrade TABLE OF CONTENTS 1 PRECAUTION 1 4 2 SPECIFIC SERVICE INSTRUCTIONS 1 4 3 DISASSEMBLY 1 15 4 ADJUSTMENT 1 18 5 TROUBLESHOOTING 1 22 This product complies with the RoHS directive for the European market This product uses Lead Free solder ...

Page 2: ...ation contained herein JVC KENWOOD Corporation reserves the right to make changes to any products herein at any time for improvement purposes Firmware Copyrights The title to and ownership of copyrights for firmware embedded in KENWOOD product memories are reserved for JVC KENWOOD Corporation Any modifying reverse engineering copy reproducing or disclosing on an Internet website of the firmware is...

Page 3: ...16 hours Digital Battery Life Battery Saver OFF ON 5 5 90 at high power with KNB 69L 2450mAh Approx 18 24 hours Analog 18 24 hours Digital Operating Temperature Range 30 C 60 C 22 F to 140 F Frequency Stability 1 0ppm Dimensions W x H x D Projections not included with KNB 45L 54 x 122 x 35 3 mm 2 13 x 4 80 x 1 39 in Weight net Radio only 165 g with KNB 45L 280 g RECEIVER Sensitivity Digital 0 25µV...

Page 4: ...med for the transceiver TX RX 446 00625 446 196875 0 5W TK 3401D E TK 3401D T Frequency range MHz RF power Type Delivery Are you using the speaker microphone YES NO KMC 21 KMC 45 Speaker microphone Option Mode Function User mode For normal use PC mode Used to communication between the transceiver and PC Data programming mode Used to read and write frequency data and other features to and from the ...

Page 5: ...serial port of the computer 2 2 3 4 KPG 22U description USB programming interface cable Option The KPG 22U is a cable which connects to a USB port on a com puter When using the KPG 22U install the supplied CD ROM with driver software in the computer The KPG 22U driver runs under Windows XP Vista 7 8 or 8 1 The latest version of the USB driver is available for download from the following URL http w...

Page 6: ...oes to the mixer The BPF is adjusted by variable capacitance diodes D400 D401 D402 D403 and D404 The input voltage to the variable capacitance diodes is the regulated voltage output from the DC amplifier IC704 2 3 2 2 First Mixer The signal from the front end is mixed with the first local oscillator signal generated in the PLL circuit by Q404 to produce the first IF frequency of 49 95MHz The resul...

Page 7: ...ker by checking if the input voltage is higher or lower than the preset value To output sounds from the speaker IC710 sends a high signal to the EXTSPSW line and turns IC707 on through Q709 Q710 Q713 and Q716 This explanation is for the external speaker amplifier For the internal loudspeaker amplifier IC710 sends a high signal to the INTSPSW line and turns IC709 on through Q711 and Q714 2 3 3 Tran...

Page 8: ...ing mode and Q5 in receiving mode The oscillation frequency is controlled by applying the VCO control voltage obtained from the phase comparator IC2 to the variable capacitance diodes D5 D9 D11 and D13 while transmitting and D4 D7 and D12 while receiving The TX RX pin of IC710 goes high in transmission mode causing Q8 to turn off and Q7 turn on The TX RX pin goes low in recep tion mode The output ...

Page 9: ...tifying the operator that it is time to replace the battery When Always Late Warning option default setting under the Battery Warning function in the FPU is selected If the battery voltage falls below 5 5V approximately the transceiver does not transmit and a warning tone beeps when the PTT switch is pressed When the Battery Warning Tone is selected in the FPU 2 3 5 3 Key Input Keys and channel se...

Page 10: ...r the baseband IC IC705 3R is 3 3V for the IF IC IC400 and is sent when SAVE is not set to ON 33MD is 3 3V for the MCU digital supply Fig 8 Power supply 2 3 8 dPMR Receiving 2 3 8 1 For Digital Data Mode The demodulated signal from IC400 Pin13 is fed into the baseband IC Pin 16 for dPMR decoding The decoded digital data will pass to the MCU through the C BUS The MCU determines whether or not to ou...

Page 11: ...R decoder Audio Output To Audio AMP DAC 3 IC710 MCU 23 42 1 4 2 IC705 Baseband IC C BUS SPI Vocoder C BUS dPMR encoder Audio Filter From MIC TCXO VCO ADC 53 80 IC710 MCU Pin No Name I O Function 1 MINVOL O Minimum volume control 2 DCSW O APC voltage discharge switch 3 APCSW O APC switch 4 TEST_1 O Test land 1 5 TEST_2 O Test land 2 6 VBAT 3 3V 7 BLULED O Blue LED light control Hi LED ON 8 BSHIFT O...

Page 12: ...SWCLK for SWD 77 CML_SSOUT I SPI chip select for baseband IC 78 CML_EPSCLK I Clock for SPI 79 CML_EPSO O SPI output 80 CML_EPSI I SPI input 81 EEP_DATAI I Data input for EEPROM 82 EEP_DATAO O Data output to EEPROM 83 EEP_CS O Chip select for EEPROM Pin No Name I O Function 84 EEP_CLK O Clock for EEPROM 85 EEP_WP O Write protect for EEPROM 86 PLL_DATA O Data output for PLL 87 PLL_LE O Chip select f...

Page 13: ... AGC amplifier Q706 Transistor MIC AGC amplifier Q707 FET Level shift RXD Q708 Transistor DC switch EXT PTT Q709 Transistor Q710 control Q710 Transistor DC switch IC707 SB Q711 Transistor Q715 control Q712 Transistor Pop noise mute control Q713 FET AF switch EXT SP Q714 Transistor DC switch IC709 SB Q715 Transistor Q714 control Q716 FET AF switch EXT SP D4 Variable capacitance diode RX VCO tune D5...

Page 14: ...g through the fuse 6 B O Connect to pin 5 7 VOLGND GND for volume level 8 EN2 I Rotary switch input 9 EN4 I Rotary switch input 10 GND GND 11 EN3 I Rotary switch input 12 EN1 I Rotary switch input Pin No Name I O Signal Type Function 1 PTT RXD I Digital PTT RXD input 2 MICIN I Analog External MIC input 3 MICO O Analog Internal MIC output 4 OPTDET I Digital External option detection 5 50V O Power D...

Page 15: ... positive terminal with a soldering iron 9 Note You can remove the TX RX unit from the chassis without removing the solder at the positive terminal However in this case you cannot attach the packing G53 2218 03 that is on the positive terminal to the chassis during as sembly So we advise you to remove the solder on the positive terminal first 4 Remove the FPC from the flat cable connector 10 5 Lif...

Page 16: ...r is pushed in this state where the two tabs come below the case surface there is a possibility of damaging the two tabs 3 2 2 Assembling the Battery Release Lever 1 Place the lever 2 onto the stopper 1 2 Place the thick spring 3 onto the lever 3 Hook the right and left ends of the thin spring 4 onto the tabs of the stopper then place the thin spring onto the lever 5 4 Slide the shaft through the ...

Page 17: ... to the case assembly reposi tion the packing with your fingers 3 2 5 The Nuts of the Volume Knob and Channel Knob Note that the shape color and height of the nuts of the volume knob and channel knob are different from one another The nut of volume knob is silver and the nut of channel knob is gold Use the following jig when removing the nuts of the volume knob and channel knob Jig Part No W05 101...

Page 18: ...he transceiver transmits Test Equipment Major Specifications 1 Standard Signal Generator SSG Frequency Range 100 to 520MHz Modulation Frequency modulation and external modulation Output 127dBm 0 1µV to greater than 47dBm 1mV 2 Power Meter Input Impedance 50Ω Operation Frequency 100 to 520MHz Measuring Range Vicinity of 10W 3 Deviation Meter Frequency Range 100 to 520MHz 4 Digital Volt Meter DVM Me...

Page 19: ...00625 446 103125 2 446 01875 446 109375 3 446 03125 446 115625 4 446 04375 446 121875 5 446 05625 446 128125 6 446 06875 446 134375 7 446 08125 446 140625 8 446 09375 446 146875 9 446 153125 10 446 159375 11 446 165625 12 446 171875 13 446 178125 14 446 184375 15 446 190625 16 446 196875 Cut ANT cable GND When the TEST cable is applied solder is deleted Attention After repairs or adjustments are c...

Page 20: ...ion meter filter LPF 3kHz HPF OFF 3 PTT ON Deviation meter Oscillo scope ANT cable FPU Make the demodula tion wave into square wave 3 DQT Balance 2 Note 2 1 TEST CH 2 Deviation meter filter LPF 3kHz HPF OFF 3 PTT ON Deviation meter Oscillo scope ANT cable FPU The Deviation of 20Hz frequency is fixed Change the 1kHz ad justment value to be come the same deviation of 20Hz within the specified range ...

Page 21: ...Open Squelch 5 Analog Narrow 1 TEST CH 2 SSG output 120dBm 0 22uV AF Freq 1kHz Mod Dev 1 5kHz SSG Oscilloscope Audio Analyzer ANT cable FPU Press Start Auto tuning 3 Open Squelch 5 dPMR Very Narrow 1 TEST CH 2 SSG output 124dBm 0 14uV AF Freq 400Hz Mod Dev 1 1kHz SSG Oscilloscope Audio Analyzer ANT cable FPU Press Start Auto tuning 4 Tight squelch Analog Narrow 1 TEST CH 2 SSG output 116dBm 0 35uV...

Page 22: ...then adjust the various ad justment data PC Test Mode as described in the SEC TION 4 ADJUSTMENT 3 If necessary write the FPU data used by the customer with the KPG 171D Note When a new printed circuit board is used the KENWOOD ESN changes as does the Transceiver Information dis play of the KPG 171D but this does not have any effect on the operation of the transceiver If changing to the original ES...

Page 23: ...B Q705 A 3B Q706 A 3B Q707 A 3A Q708 A 3A Q709 A 5B Q710 A 5B Q711 A 4A Q712 A 4A Q713 A 5A Q714 A 4A Q715 A 4A Q716 A 5A DIODE D200 A 3B D600 A 1B D601 A 5A D602 A 5A D603 A 1B D604 A 5A D700 A 3B D701 A 3B D702 A 3A D703 A 3A RESISTOR R222 A 3B R223 A 4B R226 A 4B R228 A 3B R230 A 5B R231 A 5B R233 A 5B R235 A 4B R237 A 4A R238 A 4A R241 A 4B R242 A 4A R243 A 4A R244 A 4B R246 A 4A R247 A 4B R24...

Page 24: ... B 3A R43 B 3A R44 B 3A R45 B 2A R46 B 3A R48 B 3A R51 B 1A R52 B 1A R53 B 2A R54 B 2A R55 B 2A R56 B 2A R58 B 2A R200 B 3A R202 B 3A R210 B 3A R211 B 3A R212 B 3A R213 B 3A R214 B 3B R215 B 3B R217 B 3B R219 B 3B R224 B 3B R225 B 4B R227 B 4B R229 B 4A R232 B 4B R236 B 4A R239 B 4B R249 B 4B R250 B 5B R251 B 4B R252 B 4B R254 B 3A R400 B 1B R401 B 1B R403 B 2B R404 B 2B R405 B 2B R407 B 2B R408 B...

Page 25: ... 13 XIN 12 VDD1 11 VSS1 10 INTSPMT 9 BSHIFT 8 BLUELED 7 VBAT 6 TEST_2 5 TEST_1 4 APCSW 3 DCSW 2 MINVOL 1 2F405VGT6KFAA IC710 47k CP23 D 10k R701 1u C489 1u C491 0 R454 0 R453 0 R452 0 R451 0 R450 VCC 1000p C719 VSS 0 1u C718 100p C88 100p C13 0 22u C89 100p C9 100p C83 10 R52 10k R54 100p C82 0 22u C90 0 047u C85 0 01u C84 100p C6 10k R58 1k R51 100p C87 0 01u C86 1M R460 0 22u C494 10u C486 0 1u ...

Page 26: ...Narrow DEV at 1kHz MOD To make measurements in the RF section connect the RF Wattmeter 50ohm BPF BPF LNA Q405 Mixer Q404 MCF XF400 FM IC IC400 IF1 49 95MHz IF2 450kHz 1 13 IC707 J601 16 26 AF 1kHz 10 4 0 80Vrms 355mVrms 14mVrms 0 63Vrms 17 16 72mVrms RF Center Frequency IF AMP Q403 62 9mVrms N 110 0dBm 96mVrms Q9 Q10 4 45dBm AF 1KHz G1 D G2 D 20 21 24 D203 D204 TX VCO MIC 2 2dBm 2 35dBm N 121 5dBm...

Page 27: ...P 50C IC3 1 2 CVIN BD7542FVM 50C DC AMP 50C PC IC704 BU7465HFV PLL_UL CML_SSOUT CML_EPSCLK CML_EPSI EEP_DATAI INT CML_IRQN FM_CSN TX RX FM_RSTN INSPSW CML_SCLK CML_CDATA ASSISW CML_CSN FM_SCLK FM_PDN TXD CML_EPSO EEP_DATAO EEP_CS EEP_SCLK EEP_WP REDLED EEP_CS EEP_DATAO EEP_SCLK EEP_WP EEP_DATAI 33M FM_CSN FM_SCLK FM_PDN FM_RSTN FM_SDATA AMP HSDDEC LSDI CML_CDATA CML_CSN CML_SCLK CML_EPSO CML_EPSI ...

Page 28: ...MEMO ...

Page 29: ...rs BEWARE OF BOGUS PARTS Parts that do not meet specifications may cause trouble in regard to safety and performance We recommend that genuine parts be used x_ in a description column shows the number of the used part Contents Exploded view of general assembly and parts list Packing materials and accessories parts list Electrical parts list 3 2 3 2 3 4 ...

Page 30: ...Rev 001 Exploded view of general assembly and parts list E D D B C A 27 24 39 38 15 20 16 37 36 30 29 8 25 34 33 19 17 26 18 9 21 23 E E E E 11 3 31 35 32 2 Block No M1MM 6 7 5 13 14 1 28 10 TX RX UNIT 01 4 12 22 40 ...

Page 31: ...0 PACKING VOLUME SELECTOR 26 G53 2218 03 PACKING VE 27 J19 5578 12 HOLDER SP 28 J19 5579 03 HOLDER VE 29 J19 5580 03 HOLDER ASSY 30 J87 0054 05 FPC VOLUME SELECTOR 31 J99 0783 04 ADHESIVE SHEET PTT 32 K29 9612 03 BUTTON KNOB PTT 33 K29 9614 03 KNOB VOLUME 34 K29 9615 03 KNOB SELECTOR 35 K29 9625 03 BUTTON KNOB PF 36 R31 0670 25 VARIABLE RESISTOR 37 S60 0450 05 ROTARY SWITCH 38 T07 0805 05 SPEAKER ...

Page 32: ...D203 RN141S DIODE D204 RN141S DIODE D400 1SV305F VARIABLE CAPACITANCE DIODE D401 1SV305F VARIABLE CAPACITANCE DIODE D402 1SV305F VARIABLE CAPACITANCE DIODE D403 1SV305F VARIABLE CAPACITANCE DIODE D404 1SV305F VARIABLE CAPACITANCE DIODE D405 JDV2S07FS VARIABLE CAPACITANCE DIODE D600 RB521S 30 TP DIODE D601 B30 2314 05 LED GREEN D602 B30 2315 05 LED RED D603 GN1G DIODE D604 B30 1790 05 LED BLUE D700...

Page 33: ...ITOR 7 0PF B C279 CC73GCH1H020B C CAPACITOR 2 0PF B Symbol No Part No Part Name Description Local C280 CC73GCH1H3R5B C CAPACITOR 3 5PF B C400 CK73HB1A104K C CAPACITOR 0 10UF K C402 CC73HCH1H330J C CAPACITOR 33PF J C403 CK73HB1E103K C CAPACITOR 0 010UF K C404 CC73HCH1H220J C CAPACITOR 22PF J C405 CC73HCH1H820J C CAPACITOR 82PF J C406 CK73HB1H271K C CAPACITOR 270PF K C407 CC73HCH1H390J C CAPACITOR 3...

Page 34: ...CITOR 270PF K C775 CK73HB1A104K C CAPACITOR 0 10UF K Symbol No Part No Part Name Description Local C777 CK73HB1A683K C CAPACITOR 0 068UF K C778 CK73HB1H271K C CAPACITOR 270PF K C779 CK73GB0J106K C CAPACITOR 10UF K C780 CK73HB1H271K C CAPACITOR 270PF K C781 CK73HB1A104K C CAPACITOR 0 10UF K C782 CK73HB1H271K C CAPACITOR 270PF K C783 CK73HB1A105K C CAPACITOR 1 0UF K C784 CK73GB1C225K C CAPACITOR 2 2...

Page 35: ...R405 RK73HB1J474J MG RESISTOR 470K J 1 16W Symbol No Part No Part Name Description Local R407 RK73HB1J332J MG RESISTOR 3 3K J 1 16W R408 RK73HB1J332J MG RESISTOR 3 3K J 1 16W R409 RK73HB1J563J MG RESISTOR 56K J 1 16W R412 RK73HB1J100J MG RESISTOR 10 J 1 16W R413 RK73HB1J184J MG RESISTOR 180K J 1 16W R414 RK73HB1J101J MG RESISTOR 100 J 1 16W R417 RK73HB1J564J MG RESISTOR 560K J 1 16W R418 RK73HB1J5...

Page 36: ...1J000J MG RESISTOR 0 0 J 1 16W R960 RK73HB1J000J MG RESISTOR 0 0 J 1 16W R970 RK73HB1J000J MG RESISTOR 0 0 J 1 16W R977 RK73HB1J103J MG RESISTOR 10K J 1 16W R978 RK73HB1J103J MG RESISTOR 10K J 1 16W R979 RK73HB1J103J MG RESISTOR 10K J 1 16W R983 RK73GB2A000J MG RESISTOR 0 0 J 1 10W Symbol No Part No Part Name Description Local R984 RK73GB2A000J MG RESISTOR 0 0 J 1 10W R987 RK73GB2A000J MG RESISTOR...

Page 37: ...M 47K J 1 16W CP24 RK75HA1J102J CHIP COM 1 0K J 1 16W CP25 RK75HA1J473J CHIP COM 47K J 1 16W CP26 RK75HA1J103J CHIP COM 10K J 1 16W CP27 RK75HA1J474J CHIP COM 470K J 1 16W CP401 RK75HA1J474J CHIP COM 470K J 1 16W CP402 RK75HA1J474J CHIP COM 470K J 1 16W F600 F53 0324 15 FUSE 2 5A F601 F53 0319 15 FUSE 1A J601 E11 0703 05 PHONE JACK SP MIC S601 S70 0414 05 TACT SWITCH S602 S70 0414 05 TACT SWITCH S...

Page 38: ... No RA012 Rev 001 VSE Printed in Japan JVC KENWOOD Corporation Communications Equipment BU ...

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