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SERVICE MANUAL

COPYRIGHT © 2018 JVC KENWOOD Corporation

No.RA062<Rev.001>

2018/3

B5B-7284-00

CONTROL HEAD INTERFACE KIT, CONTROL HEAD REMOTE KIT

RA062<Rev.001>

2018

3SERVICE MANUAL

B5B-7284-00

KRK-18H, KRK-19B

COPYRIGHT © 2018 JVC KENWOOD Corporation

1

PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3

2

SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3

3

DISASSEMBLY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-11

4

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-12

5

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-13

KRK-18H

KRK-19B

This product complies with the 

RoHS

 directive for the European market.

This product uses Lead Free solder.

Summary of Contents for KRK-18-HM

Page 1: ...IT RA062 Rev 001 2018 3 SERVICE MANUAL B5B 7284 00 KRK 18H KRK 19B COPYRIGHT 2018 JVC KENWOOD Corporation 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 3 3 DISASSEMBLY 1 11 4 ADJUSTMENT 1 12 5 TROUBLESHOOTING 1 13 KRK 18H KRK 19B This product complies with the RoHS directive for the European market This product uses Lead Free solder ...

Page 2: ...wise 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 cha...

Page 3: ...ver power ON in the state from which the firmware version of the NX 3720 3820 RF Deck and KRK 18H is different the firmware programming mode will start up automatically and FIRM MISMATCH is displayed on the LCD In this case rewrite the newer version firmware The firmware is written into the NX 3720 3820 RF Deck and KRK 18H at the same time 2 1 2 Connection image 2 1 3 Remove the Operation panel fr...

Page 4: ... and the flap of connector are as same side After inserting the flat cable should be locked with the connector flap surely 2 1 6 Connect the KRK 19B and KRK 18H with the KCT 71 1 Insert one lead wire with connector of the KCT 71 into the connector of the KRK 19B Fig 5 Fig 5 2 Secure the cable bush as shown in the figure 6 and attach the waterproof packing Note There is a direction to the installin...

Page 5: ...e connector CN2 and the Control Head interface connector CN48 IC1 regulates SB voltage to 5 36V 53DC and IC2 regulates SB voltage to 3 9V 39DC Both ICs work during SB is supplied 53DC is the power supply for the CAN transceiver IC6 50D and LEDs which are in the Control Head 39DC is the power source of IC30 IC3 IC4 and IC5 IC30 regulates 39DC to 1 2V 12D and 12D supplies the power to the MPU core I...

Page 6: ...PU Mobile DDR IC7 Switch Flash memory Q2 Level shift IC5 3 3V AVR MPU I O Flash memory CAN transceiver IC3 3 3V AVR Audio circuits XC3 063 CAN transceiver IC6 5V AVR CN2 AUX Interface Modular Interface CN48 LEDs for backlight indicator LCD module I O Expander LCD module 39DC 39DC 12D 12D 18D 33D 33A 18D_Flash 53DC 50D SB SB 18D 18D 33D 53DC 33D 18D ...

Page 7: ...etween the Mobile transceiver via the Control Head Remote unit KRK 19B and the Control Head This circuit consists of the CAN transceiver IC This IC converts the UART signal to the CAN signal or the CAN signal to the UART signal To communicate between the KRK 18H and the KRK 19B the CAN BUS is used 2 2 4 1 MPU The MPU is 32bit RISC processor equipped with peripheral functions The maximum operating ...

Page 8: ...53DC D7 Diode Catch diode 39DC D8 9 Zener diode ESD protection D10 Diode Over voltage protection D11 12 Diode Rectifier Diode for MIC AGC D13 Diode Over voltage protection D15 Diode Reverse voltage protection D16 17 Diode ESD protection Ref No Part Name Use Function IC1 IC AF amplifier MIC IC2 IC CAN transceiver IC3 IC Voltage regulator 33A IC4 IC DC amplifier Vref Pin No Name I O Function CN1 1 P...

Page 9: ...I O LCD driver data 52 D 1 I O LCD driver data 53 D 0 I O LCD driver data 54 WR O LCD driver WR signal 55 A 23 O LCD driver data command switch signal 56 GND Ground 57 R_SET2 No connection 58 R_SET1 No connection Pin No Name I O Function 59 R_SET0 No connection 60 GND Ground Pin No Name I O Function CN1 1 GND Ground 2 R_SET0 No connection 3 R_SET1 O Head type discern signal1 4 R_SET2 O Head type d...

Page 10: ...gnal 56 SP I Speaker signal 57 NC No connection 58 SPG Speaker ground 59 SPG Speaker ground 60 SPG Speaker ground CN3 1 PRST O Reset signal 2 PSW I Detection signal input of power switch 3 MIC I MIC signal hot 4 MIC I MIC signal cold 5 GND Ground 6 GND Ground 7 GND Ground 8 SB O Switched B power 9 NC No connection 10 IGN Ignition sense 11 SP O Speaker signal 12 SPG Speaker ground 13 GND Ground 14 ...

Page 11: ...lightly lift 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 Note How to stick the sheet on the shield cover Stick the sheet according to the ...

Page 12: ...K 19B SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT There is no adjustment item on KRK 18H and KRK 19B Main Parts Assembled Parts Part Name Part Number Part Name Part Number REAR PANEL A2D 0026 00 STANDARD LABEL B4C 0632 00 INTERFACE UNIT XC3 063M 01 SHIELDING COVER F10 3225 05 SHIELDING COVER F1B 0027 00 SHEET G1B 0343 00 Main Parts Assembled Parts Part Name Part Number Pa...

Page 13: ... becomes normal the removed parts or the subsequent parts are broken IC30 12D DC DC Converter Device is fragile in the scratch Be careful when you touch this part 18D is not Standard voltage MPU Remove L17 and L18 to check the voltage of the 18D If the voltage becomes normal the removed parts or the subsequent parts are broken mobile DDR Remove L30 to check the voltage of the 18D If the voltage be...

Page 14: ...L19 TL18 DDR_CLKP NOTE If the confirmation result is normal return the top cover of the removed BLS Depending on the specifications of the oscilloscope normal waveforms cannot be seen Confirm that the waveform is changing DDR_CLKN Points to be checked Standard voltage Q10 Gate LCDRST L50 CN48 side 3 3V 1 8V 1 8V CS4_1 CP3 4pin Standard voltage After power on and It is unlikely that the BGA parts a...

Page 15: ... Name Orginal Interface Unit Number For Service Interface Unit Number KRK 18H XC3 063M 00 XC3 063M 01 TL47 TL41 TL40 TL39 TL38 TL22 TL21 TL14 TL13 TL12 TL11 TL10 TL9 TL4 TL3 R253 R252 R203 R201 R192 R190 R187 R171 R169 R163 R162 R161 R160 R157 R156 R155 R154 R153 R147 R146 R145 R144 R143 R140 R139 R138 R137 R135 R134 R132 R131 R126 R125 R124 R123 R122 R115 R114 R108 R104 R103 R100 R99 R96 R95 R94 ...

Page 16: ...or NX 3820 Control Head of the Mobile transceiver NX 3720 or NX 3820 Control Head interface kit KRK 18H Control Head remote kit KRK 19B Remote control cable KCT 71 Regulated DC power supply Programming interface cable KPG 46U or KPG 46X Power cable 2 Remove the operation panel from the Mobile transceiver As illustrated connect properly a RF Deck and Control Head of the Mobile transceiver KRK 18H K...

Page 17: ... number and baud rate and then click the Write button Note Configuring Auto for baud rate automatically apply the maximal speed of baud rate allowed for a programming cable connected to the selected COM port number Upon start of overwriting on the transceiver LOADING appears on an LCD screen 6 Upon completion of the firmware overwriting CHECKSUM xxxx appears on an LCD screen ...

Page 18: ...MEMO ...

Page 19: ...d in the Parts List The parts numbers values and rated voltage etc in the Schematic Diagrams are for reference only Since the circuit diagrams are standard ones the circuits and circuit constants may be subject to change for improvement without any notice The parts of the symbol with may vary depending on model Refer to the parts list for details The parts of the symbol with are unmounted parts ...

Page 20: ... R162 R161 R160 R157 R156 R155 R154 R153 R147 R146 R145 R144 R143 R140 R139 R138 R137 R135 R134 R132 R131 R126 R125 R124 R123 R122 R115 R114 R108 R104 R103 R100 R99 R96 R95 R94 R93 R60 R54 R51 R48 R47 R46 R45 R38 R37 R36 R35 R30 R29 R27 R22 R8 Q10 Q7 Q6 Q2 L65 L63 L62 L61 L60 L59 L58 L57 L50 L44 L41 L40 L39 L21 L20 L19 L18 L17 L16 L15 L14 L13 L12 L8 L7 L6 L5 L4 L2 IC30 IC22 IC21 IC20 IC18 IC13 IC7...

Page 21: ...B C27 A 4A C30 B 4B C31 A 2B C32 A 4B C33 B 4A C34 B 4A C35 B 3A C36 A 4B C37 A 4B C38 A 2A C39 A 4A C40 A 2B C41 A 4B C42 A 2B C44 A 2A C46 A 2B C49 B 3A C51 A 3B C56 A 1B C57 A 1A C58 A 1A C59 A 1B C60 A 1B C61 A 1A C62 A 1A C63 A 1B C64 A 1A C65 A 1B C66 A 1B C67 A 1B C68 A 1A C69 A 2B C70 B 2B C71 A 1A C72 B 2B C73 A 1A C74 A 1A C75 A 1B C76 A 1B C77 A 1B C78 A 1A C79 B 2A C80 A 1B C81 B 2A C8...

Page 22: ...ON REF NO LOCATION REF NO LOCATION IC IC1 B 1A IC2 B 2B IC3 B 2A IC4 B 2A RESISTOR R9 B 1A R10 B 2A R11 B 2B R12 B 1A R13 B 2A R15 B 1A R16 B 2B R17 B 2A R18 B 2A R19 B 2A R100 B 2A R101 B 2A R103 B 2B R104 B 2B R106 A 2A R107 A 2A R225 B 2B CAPACITOR C6 B 2B C7 B 2A C12 B 1B C14 B 2B C15 B 1A C16 B 2A C17 B 2B C18 B 2A C19 B 2A C20 B 2A C43 A 3A C63 A 2A C68 B 1A C100 B 2A C101 A 2A C102 B 2A C10...

Page 23: ..._DQGATE1 R12 DDR_DQGATE0 R11 DDR_BA 0 V8 DDR_BA 1 T9 DDR_BA 2 U8 DDR_DQS 1 V11 DDR_DQS 0 T14 DDR_DQM 1 R10 DDR_DQM 0 W13 DDR_CS V9 DDR_CAS U9 DDR_RAS W9 DDR_WE T8 DDR_CKE V7 DDR_CLKN W7 DDR_CLKP W8 DDR_A 0 U7 DDR_A 1 T7 DDR_A 2 W6 DDR_A 3 V6 DDR_A 4 U5 DDR_A 5 V5 DDR_A 6 W5 DDR_A 7 U6 DDR_A 8 U4 DDR_A 9 T6 DDR_A 10 W4 DDR_A 11 T4 DDR_A 12 V4 DDR_A 13 T5 DDR_D 0 U15 DDR_D 1 U14 DDR_D 2 V14 DDR_D 3 ...

Page 24: ...5 L26 R202 47k R101 47k R100 1u C100 C110 C69 C109 R105 R102 0 R104 0 R103 R133 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CN1 100p C103 S 8 CANH 7 CANL 6 VIo 5 RXD 4 VCC 3 GND 2 TXD 1 TJA1051TK 3 IC2 V 5 oUT 4 IN 3 V 2 IN 1 OPA170AIDRLR IC1 STBY 3 GND 2 VIN 4 VoUT 1 BU33...

Page 25: ... SP RD I2CDT EXT SP GATEBIAS CTS2 D 6 RFINPUT PSW CN3 J1 D 5 MIC VBUS CN5 PTT D 4 RD GND DM KVL D 3 SPG GND RXD2 D 2 ME 13 6 V D 0 1 D 1 CS D2 D 1 D 0 D 0 D 7 RF D 2 ESD_GND WR DM KVL FLEX P BOARD D 3 TXD2 R_SET1 TX RX UNIT D7 D 4 2 1 A 23 LCDRST SB D 5 R_SET2 2 R_SET0 D 6 NC IGN D 6 R_SET0 3 GND GND D 2 D 7 D 2 54M USB_D SPG XC3 050 D1 RD R_SET1 GND NC P_TEMP SPG RD SPG LCDRST IGN SB BT_SW R_SET2...

Page 26: ...Hz TCXO X1 33D 33D 18D_Flash 18D Level Shift IC21 Level Shift IC22 VBUS Detect Q7 AGC D11 D12 Q6 MIC AMP IC18_1 33D 50D OP AMP IC13 CAN Transceiver IC8 33D 18D 12D 33A 33A Multiplexer IC20 33A Level Shift D4 D5 Q8 Q9 Level Shift Q1 Q3 ESD Protection D16 D17 ESD Protection D8 D9 5 3V DC DC Converter IC1 5 0V LDO IC6 3 9V DC DC Converter IC2 3 3V LDO IC5 3 3V LDO IC3 1 2V DC DC Converter IC30 1 8V D...

Page 27: ...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 7 ...

Page 28: ...0 REAR PANEL 2 B4C 0632 00 STANDARD LABEL FCC CANADA ADDRESS 3 F0G 0002 00 MOLDING COVER 4 F10 3225 05 SHIELDING COVER DC DC x2 5 F1B 0027 00 SHIELDING COVER OMAP 6 G0B 0114 00 EARTH SPRING 7 G1B 0343 00 SHEET DC DC 8 G5D 0179 00 PACKING FRONT A N80 2608 48 P HEAD T SCREW x5 XC3 063M 01 INTERFACE UNIT SERVICE UNIT 1 Block No M1MM INTERFACE UNIT 01 2 3 4 4 5 6 7 8 A A A ...

Page 29: ... Block No M 2 M M Symbol No Part No Part Name Description Local 1 A6C 0089 00 MAIN PANEL 2 B4C 0632 00 STANDARD LABEL FCC CANADA ADDRESS 3 F0G 0002 00 MOLDING COVER 4 G0B 0118 00 EARTH SPRING A N80 2608 48 P HEAD T SCREW x4 XC3 064M 00 INTERFACE UNIT Block No M2MM 3 1 2 4 A A A INTERFACE UNIT 02 ...

Page 30: ...K C60 CK73HB1E104K C CAPACITOR 0 10uF 25V K C61 CK73GB0J106K C CAPACITOR 10uF 6 3V K C62 CK73GB0J106K C CAPACITOR 10uF 6 3V K C63 CK73HB1H103K C CAPACITOR 10000pF 50V K C64 CK73HB1H103K C CAPACITOR 10000pF 50V K C65 CK73HB1H103K C CAPACITOR 10000pF 50V K C66 CK73HB1H103K C CAPACITOR 10000pF 50V K C67 CK73HB1H103K C CAPACITOR 10000pF 50V K C68 CK73GB0J106K C CAPACITOR 10uF 6 3V K C69 CK73HB1H103K C...

Page 31: ...D MG RESISTOR 47k 1 16W D R55 RK73HH1J473D MG RESISTOR 47k 1 16W D Symbol No Part No Part Name Description Local R56 RK73HH1J473D MG RESISTOR 47k 1 16W D R57 RK73HB1J100J MG RESISTOR 10 1 16W J R58 RK73HB1J000J MG RESISTOR 0 1 16W J R59 RK73HB1J000J MG RESISTOR 0 1 16W J R60 RK73HB1J000J MG RESISTOR 0 1 16W J R61 RK73HB1J000J MG RESISTOR 0 1 16W J R62 RK73HB1J220J MG RESISTOR 22 1 16W J R63 RK73HB...

Page 32: ... F10 3226 05 SHIELDING CASE E3 F1B 0026 00 SHIELDING CASE X1 L77 3123 05 TCXO Symbol No Part No Part Name Description Local Symbol No Part No Part Name Description Local IC1 OPA170AIDRLR IC IC2 TJA1051TK 3 IC IC3 BU33TD2WNVX IC IC4 BU7445HFV IC C6 CC73HCH1H470J C CAPACITOR 47pF 50V J C7 CC73HCH1H470J C CAPACITOR 47pF 50V J C12 CK73HB1E104K C CAPACITOR 0 10uF 25V K C14 CK73HB1E104K C CAPACITOR 0 10...

Page 33: ...on Local 1 PAMPHLET Manual 2 PAMPHLET WEEE FCC 3 E3G 0065 00 FFC WIRE 60pin 4 ANTI STATIC BAG REAR PANEL 5 PROTECTION BAG 80 120 0 07 DRESS SCREW MOLDING COVER x2 6 PROTECTION BAG 125 250 0 07 BRACKET 7 H5A 1365 10 ITEM CARTON 8 J29 0698 13 BRACKET COMMON KRK 10 9 N08 0550 14 DRESSED SCREW x2 10 N9X 0009 00 SCREW SET 6 7 5 2 10 9 Block No M3MM 1 3 8 5 4 ...

Page 34: ...RK 19B Packing and accessories Block No M 4 M M Symbol No Part No Part Name Description Local 1 PAMPHLET Manual 2 PAMPHLET WEEE FCC Dealer ADDRESS 3 PROTECTION BAG MOLDING COVER 4 PROTECTION BAG 125 250 0 07 MAIN PANEL 5 H5A 1366 10 ITEM CARTON 5 4 3 Block No M4MM 2 1 ...

Page 35: ...MEMO ...

Page 36: ... No RA062 Rev 001 JKS Printed in Japan JVC KENWOOD Corporation Communications Systems Division ...

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