JVC MX-KC2, Service Manual

Page 1: ...ONENT SYSTEM MB394 2005 7 MX KC2 Lead free solder used in the board material Sn Ag Cu melting point 219 Centigrade TABLE OF CONTENTS 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 4 3 DISASSEMBLY 1 5 4 ADJUSTMENT 1 18 5 TROUBLESHOOTING 1 19 CA MXKC2 SP MXKC2 SP MXKC2 Area suffix C Canada ...

Page 2: ...3 dB Signal To Noise Ratio 85 dB Wow And Flutter Unmeasurable Tuner Tuning Range FM Tuner 87 5 MHz 108 0 MHz AM Tuner 530 kHz 1 710 kHz Unit Dimensions 270 mm 308 mm 410mm W H D 10 11 16 12 3 16 16 3 16 Mass Approx 6 5 kg 14 4 lbs Speaker Specifications each unit Type 2 way bass reflex type Speaker Unit Woofer 13 cm 5 1 8 cone 1 Tweeter 5cm 2 cone 1 Power Handling Capacity 60 W Impedance 6 Ω Frequ...

Page 3: ...ack control shafts etc to be sure the product is safe to operate without danger of electrical shock Do not use a line isolation transformer during this check Plug the AC line cord directly into the AC outlet Using a Leakage Current Tester measure the leakage current from each exposed metal parts of the cabinet particular ly any exposed metal part having a return path to the chassis to a known good...

Page 4: ...1 4 No MB394 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS ...

Page 5: ...fuses inside Caution Be sure to use fuses with the specified ratings Fig 1 3 1 2 Replacing the power IC See Fig 2 Prior to performing the following procedure remove the top cover 1 Remove the two screws A from the heat sink between the power IC 2 Remove the solder fixing the power IC Fig 2 3 1 3 Replacing the heat sink cover See Fig 3 1 Remove four screws B from the rear panel 2 Pull the heat sink...

Page 6: ...ws C that retain the top cover from the panel rear of the body 2 Remove six screws D that retain the left can net from the body 3 Remove six screws c that retain the right can net from the body Fig 4 Fig 5 top cover right cabinet left cabinet C D c Right Front panel assembly C C Left Front panel assembly D C ...

Page 7: ...t panel side of this set push in the sections marked with arrows and pull out the CD tray toward the front Remove the CD tray panel by pushing both of its extremities upward in the direction of the arrows Push the CD tray deep into the set 1 Disconnect the cord wires from the CD board CN703 and CN203 2 From the rear of the set remove two screws E and four screws G on the front panel left and right...

Page 8: ...om the con nectors CN701 CN101 on the power amp board 2 Remove one screws H retaining the front panel assembly onto the bottom of the body 3 Remove two screws I on the front cabinet and bottom cab inet and then remove then GND lug b that comes from the power amp and supply board 4 Disengage the claws c on both sides of the front panel as sembly and then remove the assembly Fig 9 Fig 10 I H Claw c ...

Page 9: ... on the back side of the CD changer unit 2 The four screws J that retain the CD board should be re moved 3 Remove the CD board by pulling it toward the side where the CN601 is located 4 Using solder short the CD pickup to connect to short round Caution After re connecting the wires be sure to remove the shorting solder from the GND connection 5 Disconnect the card wire from the connector CN601 on ...

Page 10: ...over base and remove the screws d connecting the unit to the CD changer mech anism assembly 2 Removing four screws e retaining the CD mechanism hold er assembly Caution When replacing the CD changer mechanism assembly be sure not to mistake the positions of the silver color and copper color spring Fig 13 Fig 14 d CD changer unit assembly e Green color e Red color e Green color e Red color CD chang...

Page 11: ...r tray loading motor 2 Remove the two screws M retaining the gear plate and take it out after remove the rotor belt from the pulley Fig 16 3 2 5 Replacing the CD turn table and removing the motor See Fig 17 Prior to performing the following procedures remove the top cover Also remove the CD changer unit 1 Remove the one screws retaining the CD Turn table 2 Remove the two screws retaining the stopp...

Page 12: ...mechanism See Fig 18 Prior to performing the following procedures remove the top cover Also remove the CD changer unit Also remove the front panel assembly 1 Remove six screws Z retaining the cassette deck mecha nism Fig 18 Front panel assembly Z Z ...

Page 13: ...ront panel unit 3 2 9 Removing the switch board and sound mode and CD function switch board See Fig 19 to 22 Prior to performing the following procedures remove the top cover Also remove the CD changer unit Also remove the front panel assembly 1 Pull out the volume control knob from the front of the front panel assembly Fig 21 2 Remove six screws Q retaining the front panel assembly 3 Remove the c...

Page 14: ...ews t retaining the main motor from the front side of the cassette deck Caution After attaching the main motor check the orientation of the motor and the polarity of the wires 4 From the backside of the cassette deck remove the main motor and two main belts Caution The lengths of the cassette A playback only and cassette B record play main belts are different When attaching the main belts use the ...

Page 15: ...Fig 25 3 2 12 Removing the cassette deck heads See Fig 18 and 26 Prior to performing the following procedures remove the top cover and both sides board Also remove the CD changer unit Also remove the front panel assembly 1 Remove six screws Z that retain the cassette deck mecha nism Fig 18 2 Remove the cassette deck mechanism and place it so that the front side faces up 3 Remove the solder from th...

Page 16: ...rforming the following procedures remove the top cover and both sides board 1 Remove two screws A that connect the heat sink 2 Remove two screws W that connect the heat sink 3 Remove the solder fixing the the 3 pin terminal regulator Q604 Q608 4 Remove the solder fixing the 4 pin bridge diode D614 D615 Fig 27 A W ...

Page 17: ...l between the heat sink holder 4 Remove four screws YY that retains the rear panel and then remove the rear panel 5 Disconnect the parallel wires from the connectors FW951 on the power trans board 6 Remove screws Z that retain the power amp and supply board and then remove the assembly 7 Remove the clamp of AC power cord from the chassis 8 Remove four screws that retain the power trans board and t...

Page 18: ...1 18 No MB394 SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT ...

Page 19: ... No MB394 1 19 SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING ...

Page 20: ... No MB394 AV MULTIMEDIA COMPANY AUDIO VIDEO SYSTEMS CATEGORY 10 1 1chome Ohwatari machi Maebashi city 371 8543 Japan Victor Company of Japan Limited VPT Printed in Japan ...