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Kenwood KRK-14H, Руководство по обслуживанию

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Kenwood KRK-14H Скачать руководство пользователя страница 7

(No.RA021<Rev.001>)1-7

2.2.2.3

Audio circuit

2.2.2.3.1

Audio circuit overview

KRK-15B has one RX Audio input channel (AFI+/-), two RX Audio output channels (AFOA+/- and AFOB+/-), one TX Audio output
channel (MIC/ ME), and two TX input channels (MICA+/- and MICB+/-). Selection of Audio input / output channels (AFOA/ AFOB/
MICA/ MICB) and other audio path are controlled by Mobile transceiver’s MPU through I/O expander IC (IC7).

Fig.2 Simplified audio circuit

2.2.2.3.2

RX Audio path

Speaker voice sounds of KCH-19 which received by Mobile transceiver are passed through KRK-15B and KRK-14H.
Receive audio for KRK-14H given from AFI+/- has outputted to AFOA+/- or AFOB+/- terminal through IC5, IC8, IC9 and IC10 as fol-
lows.

Fig.3 RX audio path

2.2.2.3.3

TX Audio path

Microphone signals Mobile transceiver which given by KCH-19 are passed through KRK-14H and KRK-15B.
Transmit audio given from MICA+/- or MICB+/- have outputted to MIC / ME terminal through IC4 and IC1 as follows.

Fig.4 TX audio path

2.2.2.4

Control circuit

The control circuit consists of followings;

(1) Convert serial communication signal (IC2)
(2) Convert audio path control signal from Mobile transceiver (IC7).

CN1

Vref

IC1

IC4

CN3 / CN4

IC9 / IC10

IC5

AFI

MIC

AFOA / AFOB

MICA / MICB

IC8

IC9 / IC10

MICA / MICB

IC1

IC4

IC8

CN1

AFI

CN3 / CN4

IC5

Vref

MIC

AFOA / AFOB

IC9 / IC10

MICA / MICB

IC1

IC4

IC8

CN1

AFI

CN3 / CN4

IC5

Vref

MIC

AFOA / AFOB

Содержание KRK-14H

Страница 1: ...K 14H KRK 15B 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 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 3 3 DISASSEMBLY 1 11 4 ADJUSTMENT 1 11 5 TROUBLESHOOTING 1 12 KRK 14H KRK 15B This product complies with the RoHS directive for the European market This product uses Lead Free solder ...

Страница 2: ...rwise for any purpose without the prior written permission of JVC KENWOOD Corporation Disclaimer While every precaution has been taken in the preparation of this manual JVC KENWOOD Corporation assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the information contained herein JVC KENWOOD Corporation reserves the right to make ch...

Страница 3: ...Deck and KRK 14H at the same time 2 1 2 Connection image 2 1 3 DIP Switch setting All DIP switches for single remote KRK 14H and KRK 15B must be set as ON 2 1 4 Remove the Operation panel from the transceiver NX 5700 NX 5800 only 1 Lift the two tabs of the panel on the bottom of the transceiv er with a flat head screwdriver and remove the panel from the chassis Fig 1 Fig 1 2 Remove the flat cable ...

Страница 4: ...ter inserting the flat cable should be locked with the connector flap surely 3 Fit the four tabs of the KRK 14H into the operation panel Note Fit so that the flat cable towards the way of the arrow us ing a finger Fig 5 Fig 5 2 1 7 Connect the KRK 15B and KRK 14H with the KCT 71 1 Insert one lead wire with connector of the KCT 71 into the connector CN3 of the KRK 15B Fig 6 Fig 6 2 Secure the cable...

Страница 5: ...d IC5 regulates 3 3V 33D 12D is supplied to MPU core 18D is supplied to MPU Mobile DDR Codec DSP core In MPU memory interface work with 1 8V power supply 18D The I O section of the NOR flash memory works with a 1 8V power supply It must be supplied after 33D is powered up Therefore the 1 8V power supply of flash memory is supplied through switch IC IC7 which is controlled by 33D 33A is the power s...

Страница 6: ...nd the Mobile DDR IC23 the flash memory IC29 The flash memory has capacity of 256Mbit that contains the program for the MPU and stores the data That program can be easily updated from external devices The Mobile DDR has capacity of 512Mbit The MPU copies the program from the flash memory to the Mobile DDR The MPU uses the Mobile DDR as a work area 2 2 1 4 3 LCD control interface The MPU controls L...

Страница 7: ...audio for KRK 14H given from AFI has outputted to AFOA or AFOB terminal through IC5 IC8 IC9 and IC10 as fol lows Fig 3 RX audio path 2 2 2 3 3 TX Audio path Microphone signals Mobile transceiver which given by KCH 19 are passed through KRK 14H and KRK 15B Transmit audio given from MICA or MICB have outputted to MIC ME terminal through IC4 and IC1 as follows Fig 4 TX audio path 2 2 2 4 Control circ...

Страница 8: ...D8 9 Zener diode Over voltage protection D10 Diode Reverse current prevention D11 12 Diode MIC AGC detection D13 Diode Reverse current prevention D15 Diode Reverse current prevention Ref No Part Name Description IC1 IC AF AMP IC2 IC CAN transceiver IC IC3 IC Voltage regulator 33A IC4 5 IC Analog SW AF IC6 IC DC AMP Vref IC7 IC I O expander IC8 IC AF AMP IC9 10 IC Analog SW AF Pin No Name I O Funct...

Страница 9: ...ignal 30 I2CCK O I2C serial clock 31 I2CDT I O I2C serial data 32 GND Ground 33 USB_D I O USB0 PHY data minus 34 USB_D I O USB0 PHY data plus 35 GND Ground 36 33M O 3 3V output 37 DM KVL I O MIC data detection 38 GND Ground 39 RXD I Serial data input Pin No Name I O Function 40 TXD O Serial data output 41 PTT I PTT input 42 PSW I Detection signal input of power switch 43 AFO O AF signal output plu...

Страница 10: ...IC signal input plus_B 6 MICB I MIC signal input minus_B 7 GND Ground 8 SB O Switched power supply 9 NC No connection 10 NC IGN No connection Ignition sense in put 11 AFoA O AF signal output plus_A 12 AFoA O AF signal output minus_A 13 AFoB O AF signal output plus_B 14 AFoB O AF signal output minus_B 15 CAN I O CAN data plus 16 CAN I O CAN data minus Pin No Name I O Function CN4 1 PRST O Reset sig...

Страница 11: ...ft the edge of the top cover 1 3 As you do step 2 above vary the position you hold the top cover as you lift it and remove the top cover 2 Note Once the top cover is removed it cannot be used again Note Push evenly on the top cover and be careful that you do not bend it as you install it on the shield cover SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT There is no adjustmen...

Страница 12: ...an abnormal point 12D has an abnormal voltage MPU Remove L12 L16 to check the voltage of the 12D If the voltage becomes normal the MPU is broken 18D has an abnormal voltage MPU When an abnormal value is confirmed When an abnormal value is confirmed When an abnormal value is confirmed Checking SB Battery voltage Points to be checked Normal voltage 13 6V 15 SB CN3 The BGA parts are not broken If the...

Страница 13: ...to Sub Display unit of the NX 5700 5800 and KCH 19 If the voltage becomes normal the FFC or Sub Display unit is broken The LCD displays INIT ERROR 1 An error occurs when the mobile DDR internal RAM reads or writes The mobile DDR may be broken Check the flowchart from beginning 1 PRST MPU reset signal LOW Reset 2 FRST Flash Memory reset signal LOW Reset 3 CS2_2 Flash Memory chip select signal LOW A...

Страница 14: ...ing the 25 pin logic interface D SUB 25 pin on the NX 5700 5800 rear panel will not work 2 Programming a Start up the KENWOOD Firmware loader KFL b Set the firmware to the KENWOOD Firmware loader KFL c Turn the transceiver power ON d Check the connection between the transceiver and the personal computer e Press write button in the window When the transceiver starts to receive data the LOADING disp...

Страница 15: ... C131 C130 C127 C126 C125 C124 C123 C122 C121 C97 C95 C94 C72 C70 C34 C33 C30 C26 C24 C21 C20 C3 C2 C1 IC2 CN37 IC23 IC16 IC29 1 IC25 IC20 CN35 IC19 R501 R251 R250 R200 R199 R198 R197 R194 R193 R192 R191 R190 R189 R107 R103 R102 R101 R100 R99 R98 R97 R96 R95 R94 R93 R92 R91 R84 R83 R75 R74 R73 R72 R71 R70 R61 R60 R59 R58 R54 R53 R52 R51 R50 R49 R48 R47 R46 R45 R43 R42 R41 R40 R39 R38 R37 R36 R35 R...

Страница 16: ...B R192 A 2B R193 A 2A R194 A 2A R195 B 2B R196 B 2B R197 A 2A R198 A 3A R199 A 2A R200 A 2A R250 A 3A R251 A 3A R252 B 2A R253 B 4B R501 A 1A CAPACITOR C1 B 2A C2 B 2A C3 B 2A C4 A 2A C5 A 2A C6 A 2A C7 A 2A C15 A 2A C16 A 2A C17 A 2A C20 B 1A C21 B 1A C23 A 4B C24 B 1A C25 A 4B C26 B 1A C27 A 3B C29 A 3B C30 B 1A C31 A 4A C32 A 4B C33 B 1B C34 B 1B C35 A 2A C36 A 4B C37 A 4B C38 A 4A C39 A 3B C40...

Страница 17: ... B 2B R13 B 2A R15 B 2B R16 B 1A R17 B 3B R18 B 3B R19 B 3B R20 B 3B R22 B 1A R23 B 1A R24 B 1A R25 B 3B R26 B 3A R27 B 3B R28 B 3B R29 B 3A R30 B 3B R31 B 3B R32 B 3A R33 B 3B R37 B 3A R38 B 3A R39 B 3A R40 B 3A R41 B 3A R42 B 3A R67 B 1A R68 B 1A R100 B 2B R101 B 2B R102 A 3A R103 B 3A R104 A 3A R105 B 3A R106 A 3A R107 A 3A CAPACITOR C2 B 1A C3 B 1B C4 B 1B C5 B 1B C6 B 2B C7 B 2B C12 B 1B C14 ...

Страница 18: ... C69 0 01u C82 0 01u C65 1u C77 100p C85 1u C58 100p C73 10u C56 0 01u C63 1u C57 0 01u C64 10u C62 100p C75 10u C74 10u C61 10u C71 100p C80 100p C70 0 01u C72 C93 1810 05 4 7u C3 1u C51 1u C41 1u C38 10u C165 100p C178 0 22u C166 0 22u C167 0 1u C93 0 1u C90 RB521CM 30 D4 DZ2J180 M D9 MINISMDC020F D1 47k R28 47k R31 RB521CM 30 D5 DZ2J180 M D8 0 R14 0 R16 3 3k R3 F10 3226 05 E1 SB 4 GND 3 SP 2 SP...

Страница 19: ...ICB 6 MICB 5 MICA 4 MICA 3 PSW 2 PRST 1 CN4 10u C68 CN6 IGN 50 NC 49 GND 48 54M 47 GND 46 GND 45 NC 44 NC 43 NC 42 NC 41 NC 40 NC 39 NC 38 NC 37 NC 36 NC 35 NC 34 NC 33 NC 32 NC 31 NC 30 NC 29 NC 28 NC 27 NC 26 NC 25 NC 24 PRST 23 KEYINT 22 I2CCK 21 I2CDT 20 GND 19 NC 18 NC 17 GND 16 33M 15 NC 14 GND 13 RXD 12 TXD 11 NC 10 PSW 9 AFi 8 AFi 7 MIC 6 ME 5 R_SET2 4 R_SET1 3 R_SET0 2 GND 1 CN1 0 R26 0 R...

Страница 20: ...T 23 PRST 24 NC 25 NC 26 NC 27 NC 28 NC 29 NC 30 NC 31 NC 32 NC 33 NC 34 NC 35 NC 36 NC 37 NC 38 NC 39 NC 40 NC 41 NC 42 NC 43 NC 44 NC 45 GND 46 GND 47 54M 48 GND 49 NC 50 NC IGN CN900 4 SB 3 GND 2 SPG 1 SPo CN4 16 CAN 15 CAN 14 AFoB 13 AFoB 12 AFoA 11 AFoA 10 IGN 9 NC 8 SB 7 GND 6 MICB 5 MICB 4 MICA 3 MICA 2 PSW 1 PRST CN35 4 SB 3 GND 2 SP 1 SP INTERFACE UNIT INTERFACE UNIT XC3 009 KRK 15B KRK 1...

Страница 21: ...D18_1 18D DC SW 18D 3 3V VOLTAG E REGULATOR IC7 XC8102AA07 G SB 39DC 18D_Flash 1 8V DC DC CONVERTER DDR18 AUXi0 AUXI_0 AUXi1 AUXI_1 AUXO1 AUXO0 AUXI0 AUXI1 AUXI1 Q9 33A AFo IC19 IC22 TC7SZ08FE IC21 TC7SET125FUF U0_DP U0_DM SB CN2 CN35 RVDD CVDD PLL0_VDDA PLL1_VDDA DDR18 DVDD18_1 DVDD33 IC20 MiC_SEL IC9 IC10 AFiB_EN IC9 IC10 AFiA_EN MicB_EN IC11 IC12 MicA_EN IC11 IC12 IC25 AMPPD USB12 25REF AMP IC1...

Страница 22: ...MEMO ...

Страница 23: ...umbers 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 Electrical parts list Packing materials and accessories parts list 3 2 3 4 3 8 ...

Страница 24: ...bol No Part No Part Name Description Local 1 A2D 0001 00 REAR PANEL 2 F0G 0002 00 MOLDING COVER 3 F10 3225 05 SHIELDING COVER DC DC x2 4 F1B 0027 00 SHIELDING COVER OMAP 5 G5D 0017 00 PACKING FRONT A N80 2608 48 P HEAD T SCREW x5 XC3 0080 21 SERVICE INTERFACE UNIT 3 1 Block No M1MM INTERFACE UNIT 01 3 4 A A A A 5 2 ...

Страница 25: ...neral assembly and parts list KRK 15B General assembly Block No M 2 M M Symbol No Part No Part Name Description Local 1 A6C 0001 00 MAIN PANEL 2 F0G 0002 00 MOLDING COVER A N80 2608 48 P HEAD T SCREW x4 Block No M2MM 1 INTERFACE UNIT 02 2 A A ...

Страница 26: ...CITOR 10UF K C38 CK73GB1E105K C CAPACITOR 1 0UF K C39 CK73HB1H182K C CAPACITOR 180UF K C40 CC73HCH1H101J C CAPACITOR 100PF J C41 CK73GB1E105K C CAPACITOR 1 0UF K C42 CK73FXR1E475K C CAPACITOR 4 7UF K C43 CK73FB1C106K C CAPACITOR 10UF K C44 CK73GB1E105K C CAPACITOR 1 0UF K C46 CK73GB0J106K C CAPACITOR 10UF K C48 CK73GB0J106K C CAPACITOR 10UF K C51 CK73GB1E105K C CAPACITOR 1 0UF K C56 CK73GB0J106K C...

Страница 27: ...art No Part Name Description Local C250 CK73HB1E104K C CAPACITOR 0 10UF K C251 CK73HBB1H102K C CAPACITOR 1000PF K C252 CK73HBB1H102K C CAPACITOR 1000PF K R3 RK73FB2B332J MG RESISTOR 3 3K J 1 8W R7 RK73HH1J683D MG RESISTOR 68K D 1 16W R8 RK73HH1J683D MG RESISTOR 68K D 1 16W R9 RK73HH1J153D MG RESISTOR 15K D 1 16W R10 RK73HB1J682J MG RESISTOR 6 8K J 1 16W R12 RK73HB1J000J MG RESISTOR 0 0 J 1 16W R13...

Страница 28: ...ISTOR 0 0 J 1 16W R169 RK73HB1J104J MG RESISTOR 100K J 1 16W R170 RK73HB1J104J MG RESISTOR 100K J 1 16W R171 RK73HB1J104J MG RESISTOR 100K J 1 16W R174 RK73HB1J104J MG RESISTOR 100K J 1 16W R187 RK73HB1J105J MG RESISTOR 1 0 M 1 16W R188 RK73HB1J000J MG RESISTOR 0 0 J 1 16W R189 RK73HB1J101J MG RESISTOR 100 J 1 16W R190 RK73HB1J101J MG RESISTOR 100 J 1 16W R191 RK73HB1J101J MG RESISTOR 100 J 1 16W ...

Страница 29: ...02J MG RESISTOR 1 0K J 1 16W R15 RK73HB1J473J MG RESISTOR 47K J 1 16W R16 RK73HB1J000J MG RESISTOR 0 0 J 1 16W R17 RK73HB1J273J MG RESISTOR 27K J 1 16W R18 RK73HB1J473J MG RESISTOR 47K J 1 16W R19 RK73HB1J104J MG RESISTOR 100K J 1 16W R20 RK73HB1J104J MG RESISTOR 100K J 1 16W R22 RK73FB2B121J MG RESISTOR 120 J 1 8W R23 RK73HB1J000J MG RESISTOR 0 0 J 1 16W R24 RK73HB1J000J MG RESISTOR 0 0 J 1 16W R...

Страница 30: ...Local 1 PAMPHLET ROHS 2 PAMPHLET 3 E3F 0019 00 FLAT CABLE 50PIN TO HEAD 4 E3H 0008 00 LEAD WIRE WITH CONNECTOR 4PIN TO HEAD 5 ANTI STATIC BAG 6 PROTECTION BAG 60 110 0 07 x2 7 PROTECTION BAG 100 250 0 07 8 H5A 0244 00 ITEM CARTON 9 J1K 0003 00 BRACKET 10 N08 0550 14 DRESSED SCREW BRACKET x2 11 N9X 0009 00 SCREW SET 7 8 6 1 11 10 Block No M3MM 2 3 4 9 6 5 ...

Страница 31: ...t KRK 15B Packing and accessories Block No M 4 M M Symbol No Part No Part Name Description Local 1 PAMPHLET ROHS 2 PAMPHLET 3 H1C 0004 00 PACKING FIXTURE 4 PROTECTION BAG MOLDING COVER 5 PROTECTION BAG 100 250 0 07 6 H5A 0245 00 ITEM CARTON 6 3 5 4 Block No M4MM 1 2 ...

Страница 32: ... No RA021 Rev 001 VSE Printed in Japan JVC KENWOOD Corporation Communications Systems BU ...

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