1. Manuals
  2. Brands
  3. JVC Manuals
  4. Stereo System
  5. MX-KC4
  6. Service manual

JVC MX-KC4 Service Manual

Compact component system
Hide thumbs Also See for MX-KC4:
Table of Contents

Advertisement

Quick Links

See also: Instruction Manual
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
2005
4
MB350
STANDBY/ON
SLEEP
AUX
FM MODE
FM /AM
CD
CD
1
CD
2
CD
3
REPEAT
PROGRAM /RANDOM
TAPE
A
TAPE
B
SOUND
VOLUME
MODE
FADE
MUTING
RHYTHM AX
REMOTE CONTROL
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
MX-KC4
SP-MXKC4
CA-MXKC4

TABLE OF CONTENTS

J ---------------------------- U.S.A.
C ------------------------- Canada
SP-MXKC4
Area suffix

Advertisement

Table of Contents
loading

Related Manuals for JVC MX-KC4

Summary of Contents for JVC MX-KC4

  • Page 1: Table Of Contents

    SERVICE MANUAL COMPACT COMPONENT SYSTEM MB350 2005 MX-KC4 Area suffix J ---------------------------- U.S.A. C ------------------------- Canada STANDBY/ON SLEEP FM MODE FM /AM REPEAT PROGRAM /RANDOM TAPE TAPE SOUND VOLUME MODE FADE MUTING RHYTHM AX REMOTE CONTROL SP-MXKC4 CA-MXKC4 SP-MXKC4 TABLE OF CONTENTS PRECAUTION.
  • Page 2 SPECIFICATION 180 W per channel, min. RMS, driven into 6 Ω at Amplifier Output Power 1kHz, with no more than 10% total harmonic distortion Input Sensitivity/Impedance (1 kHz) AUX IN:400 mV/50 kΩ 6 - 16 Ω Speaker terminals 32 Ω - 1 kΩ Phones 15 mW/ch output into 32 Ω...

  • Page 3: Precaution

    SECTION 1 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal es. For continued protection, no changes should be made part, particularly any exposed metal part having a return to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across...
  • Page 4 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
  • Page 5 Importance administering point on the safety Caution: For continued protection against risk of fire, replace only with same type 3.5A/125V for F901 and 1.6A/250V for F902. This symbol specifies type of fast operating fuse. Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F901 comme le meme type que 3.5A/125V et F902 que 1.6A/250V .

  • Page 6: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe PRECAUTION. 1-6 (No.MB350)

  • Page 7: Disassembly

    SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the metal cover/ rear cover (See Fig.1 to 5) (1) Remove the four screws A on the back of the body. (2) Remove the six screws B on the back of the body. (3) Remove the four screws C and the two screws D on both sides of the body.
  • Page 8 Front panel assembly Metal cover Fig.3 Front panel assembly Metal cover Fig.4 Metal cover Fig.5 1-8 (No.MB350)
  • Page 9 3.1.2 Removing the CD fitting (See Fig.6 to 8) • Prior to performing the following procedure, remove the metal CD changer mechanism unit CD tray eject key cover/ rear cover. CD fitting Caution: For protecting the CD fitting from damage, remove it before de- taching the CD changer mechanism unit.
  • Page 10 CD changer mechanism unit CD tray eject key CD tray STANDBY / ON key Front panel assembly Fig.8 CD changer mechanism unit Main board Loading pullygear Fig.9 1-10 (No.MB350)
  • Page 11 3.1.4 Removing the CD changer mechanism unit (See Fig.10 to 14) • Prior to performing the following procedure, remove the metal CD changer mechanism unit cover/ rear cover and the CD fitting. Main board (1) From the bottom of the CD changer mechanism unit, dis- CN402 connect the wire from connector CN401, CN402...
  • Page 12 Rear panel Fig.12 CD changer mechanism unit Front panel assembly Rear panel Fig.13 CD changer mechanism unit Rear panel Front panel assembly Fig.14 1-12 (No.MB350)
  • Page 13 3.1.5 Removing the power board (See Fig.15 to 19) • Prior to performing the following procedure, remove the metal Power board Rear panel cover/ rear cover, the CD fitting and the CD changer mecha- nism unit. (1) Disconnect the wire from connector CN903 CN202 the power board.
  • Page 14 Raer panel Heat sink Power board Fig.17 Power board Heat sink Fig.18 Heat sink Power board Fig.19 1-14 (No.MB350)
  • Page 15 3.1.6 Removing the transformer board (See Fig.20 to 23) • Prior to performing the following procedure, remove the metal Transformer board cover/ rear cover, the CD fitting and the CD changer mecha- nism unit. (1) Disconnect the wire from connector CN903 CN202 the power board.
  • Page 16 3.1.7 Removing the front panel assembly (See Fig.24 to 27) • Prior to performing the following procedure, remove the metal cover, the CD fitting and the CD changer mechanism unit. (1) Disconnect the wire from connector CN202 on the power board.
  • Page 17 3.1.8 Removing the LCD board, CD tray eject switch board, REC select switch board and Operation board (See Fig.28 , 29) • Prior to performing the following procedure, remove the front Front panel assembly panel assembly. (1) Pull out the volume knob on the front panel assembly. (2) Remove the twenty-six screws Q attaching the LCD board, CD tray eject switch board, REC select switch board and Operation board.
  • Page 18 3.1.10 Removing the main board (See Fig.31 to 33) • Prior to performing the following procedure, remove the metal cover/ rear cover, the CD fitting and the CD changer mecha- nism unit. Caution: Before disconnecting the card wire from connector CN701 the main board and the CD pickup board, make sure to solder the short-circuit point on the CD pickup board.
  • Page 19 3.1.11 Removing the CD changer mechanism assembly (See Fig.34 to 35) • Also remove the CD changer unit. CD changer (1) Turn the CD changer mechanism cover base and remove unit the screws d connecting the unit to the CD changer mech- anism assembly.
  • Page 20 3.1.12 Removing the CD pickup (See Fig.36) • Prior to performing the following procedures, remove the top CD pickup cover. • Also remove the CD changer unit. • Also remove the CD changer mechanism. (1) Widen the section f. (2) While keeping the section f wide open, push the section g in the direction of the arrow to remove the shaft, and then remove the CD pickup.
  • Page 21 3.1.15 Removing the cassette deck main motor, and replacing the main belts (See Fig.39 and 40) • Prior to performing the following procedures, remove the top Cassette deck mechanism cover and both sides board. (Front side) • Also remove the CD changer unit. •...
  • Page 22 3.1.17 Removing the cassette deck heads (See Fig. 39 and 42) • Prior to performing the following procedures, remove the top Cassette deck mechanism cover and both sides board. (Front side) • Also remove the CD changer unit. • Also remove the front panel assembly. (1) Remove six screws Z that retain the cassette deck mecha- nism.
  • Page 23 Speaker 3.2.1 Removing the front cabinet (See Fig.1, 2) Caution: Cover the product with cloth to avoid damage. Front panel assembly (1) Insert a screwdriver into the two slots h at the bottom of the speaker and release the seven bosses on the inside of the front panel assembly toward the front.
  • Page 24 3.2.3 Removing the main speaker (See Fig.4) • Prior to performing the following procedure, remove the front Speaker wire cabinet. (1) Remove the four screws V attaching the main speaker. If necessary, disconnect the wire connected to the sub speaker terminal and the speaker. Main speaker Fig.4 1-24 (No.MB350)

  • Page 25: Adjustment

    SECTION 4 ADJUSTMENT Measurement Instruments Required for Adjustment (1) Low frequency oscillator Standard measurement position of volume and switch This oscillator should have a capacity to output 0dBs to Power Standby 600Ω at an oscillation frequency of 50Hz-20kHz. (Light STANDBY Indicator) (2) Attenuator impedance : 600Ω...
  • Page 26 Arrangement of adjusting positions Cassette deck mechanism (Front side) PB Head REC/PB Head (Deck-A) (Deck-B) Head azimuth screw Head azimuth screw (Forward side) (Forward side) Head azimuth screw Head azimuth screw (Reverse side) (Reverse side) 4.6.1 Tape recorder section Adjusting Measurement Standard Items...

  • Page 27: Troubleshooting

    SECTION 5 TROUBLESHOOTING Flow of functional operation until TOC read Check Point Slider turns REST Confirm that the voltage at the pin5 Play Key Power ON SW ON. of CN602 is "H"\"L"\"H". Automatic tuning of TE offset Check that the voltage at the Laser ON pin40 of IC601 is + 5V? Detection of disc...
  • Page 28 Maintenance of laser pickup Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens Turn off the power switch and, disconnect the with a alcohol soaked cotton swab. power cord from the ac outlet.

  • Page 29: Wiring Diagram

    Wiring diagram BI1206271V BI12P30232V CN701 CN205 Cassette board B PB/REC head bottom side A P/B head bottom side BI12P30215V Cass deck motor R BK BI1205291U Main board BI12P80102V CN402 CN201 CN601 CN401 VFD board CN403 CN204 CN203 CW201 CN206 BI1206251V BI1206261V CW206 CW204...

  • Page 30: Block Diagram

    Block diagram JA302 AUX IN ANT IN CN205 AM/FM-MPX TUNER HEADPHONE Q407 REC MUTE CONT Q611 Q502 DECK-A IC401 MUTE Q503 IC501 PB-HEAD TAPE PB/REC FEEDBACK VOL,TONE IC601 SELECTOR SPEAKER Q409,406 Q412 IC503 POWER AMP DECK-B PB MUTE BIAS OSC OPE.AMP R/P HEAD Q612...
  • Page 31 Standard schematic diagrams CDP/AMP POWER section Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
  • Page 32 Function section...
  • Page 33 CPU section...
  • Page 34 FL / Key control section...
  • Page 35 CD MP3 section...
  • Page 36 Tuner section...
  • Page 37 Printed circuit board Main board (forward side)
  • Page 38 Main board (reverse side) 2-10...
  • Page 39 Amp board (forward side) (reverse side) 2-11...
  • Page 40 Front board (forward seide) (reverse seide) 2-12...
  • Page 41 Trans board 2-13...

  • Page 42: Parts List

    PARTS LIST [ MX-KC4 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix J ----------------------------- U.S.A. C -------------------------- Canada - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 5 CD changer mechanism assembly and parts list (Block No.MA)
  • Page 43 Exploded view of general assembly and parts list Block No. VFD board CD door board Main bo 49 50 Front board...
  • Page 44 Main board Amp. board Front board F902 F901 Power trans. board...
  • Page 45 General Assembly Block No. [M][1][M][M]  Symbol No. Part No. Part Name Description Local BI1077280102V1 CASSE COVER L HIPS 470 BI1077260102V1 CASSETTE BOX L HIPS 470 BI1077300101U1 CASSETTE LENS L SAN2495 BI1077310101U1 CASSETTE LENS R SAN2495 BI3021970101V1 RUBBER FOOT (x2) BI1077290102V1 CASSETTE BOX R HIPS 470...
  • Page 46 CD changer mechanism assembly and parts list Block No. CMS-FR3BN 9 10...
  • Page 47 CD changer mechanism Block No. [M][A][M][M]  Symbol No. Part No. Part Name Description Local BIAJ7200601J BASE-MAIN BIAJ6100601P BRKT-CHUCK BI3302000158 MAGNET-FERRITE BIAJ7200601L TABLE-CHUCK BIAJ6300601A SHEET-CHUCK (x3) BIAJ7300601B BELT-LOAD BIAJ6600601N GEAR-SYNCRO BIAJ6600601L GEAR-CONVERT BIAJ6600601M GEAR-TRAY BIAJ6600601R GEAR-CAM BIAJ6600601K GEAR-LOAD BIAJ6600601J GEAR-PULLEY BIAJ7200601N SLIDER-CAM BI3405000101...
  • Page 48 Cassette mechanism assembly and parts list Block No. ADR268DSW...

  • Page 49: Cassette Mechanism

    Cassette mechanism Block No. [M][P][M][M]  Symbol No. Part No. Part Name Description Local BIMT9201010K PINCH ARM F (x2) BIMT7200022A ARM PINCH F BI6107000353 S/P PINCH F BIMT7300010A ROLLER PINCH BI6107000177 S/P P/R F (x2) BIMT9222010C CLUTCH ASSY (x2) BIMT7200391A BUSH C BIMT7200387A PULLEY C...

  • Page 50: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1] 1SS133 FR DIODE BI31SS133M0007  Symbol No. Part No. Part Name Description Local 1SS133 FR DIODE BI31SS133M0007 D301 1SS133 FR DIODE BI31SS133M0007 D302 1SS133 FR DIODE BI31SS133M0007...
  • Page 51  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local BICC471500JA041 C CAPACITOR 470pF C503 BICM562101KP015 P CAPACITOR 0.0056uF BICC103500KA042 C CAPACITOR 0.01uF C504 BICM823101KP015 P CAPACITOR 0.082uF BICC103500KA042 C CAPACITOR 0.01uF C505 BICM823101KP015 P CAPACITOR...
  • Page 52  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local C719 BICC104250ZA043 C CAPACITOR 0.1uF BIRC2240105A005 C RESISTOR 220KΩ 1/10W C720 BICC333250KA042 C CAPACITOR 0.033uF BIRC1220105A005 C RESISTOR 1.2KΩ 1/10W C721 BICC474100KA042 C CAPACITOR 0.47uF BIRC1010105A005...
  • Page 53  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R344 BIRC2210105A005 C RESISTOR 220Ω 1/10W R434 BIRC3920105A005 C RESISTOR 3.9KΩ 1/10W R345 BIRC1020105A005 C RESISTOR 1KΩ 1/10W R435 BIRC2220105A005 C RESISTOR 2.2KΩ...
  • Page 54  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R542 BIRC2220105A005 C RESISTOR 2.2KΩ 1/10W R806 BIRC1010105A005 C RESISTOR 100Ω 1/10W R543 BIRC1030105A005 C RESISTOR 10KΩ 1/10W R807 BIRC1010105A005 C RESISTOR 100Ω...

  • Page 55: Front Board

     Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local JR26 BIRC0000085A003 C RESISTOR 0Ω 1/8W R226 BIRC1820105A005 C RESISTOR 1.8KΩ 1/10W JR28 BIRC0000165A005 C RESISTOR 0Ω 1/16W R227 BIRC2020105A005 C RESISTOR 2KΩ...
  • Page 56  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local S203 BI8SKRGAED0P015 TOUCH SWITCH SKRGAED010 D611 UZ5.6BSB Z DIODE BI3UZ5.6BSBM000 S204 BI8SKRGAED0P015 TOUCH SWITCH SKRGAED010 D613 1N4003 DIODE BI31N4003SEN000 S205 BI8SKRGAED0P015 TOUCH SWITCH SKRGAED010 D614 RS402M...
  • Page 57  Symbol No.  Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local R601 BIRC4720105A005 C RESISTOR 4.7KΩ 1/10W XXXXX BI640MXKB4H0500 AMP PWB R602 BIRC7500105A005 C RESISTOR 75Ω 1/10W XXXXX BI202555010101 HEAT SINK transistor R605 BIRC1020105A005 C RESISTOR 1KΩ...
  • Page 58 <MEMO> 3-17...

  • Page 59: Packing Materials And Accessories Parts List

    Packing materials and accessories parts list Block No. No additional / supplemental order of WARRANTY CARDs are available. 3-18...
  • Page 60 Packing and Accessories Block No. [M][3][M][M]  Symbol No. Part No. Part Name Description Local BI440001511001W INST BOOK ENG FRE LVT1343-002B BI440001504001W INST BOOK ENG LVT1343-001B ------------ WARRANTY CARD BT520062(1002) ------------ WARRANTY CARD BT510341(0301) BI4032603U SAFTEY CARD ------------ BATTERY (x2) BIAN01012V ANT WIRE BIAN01031V...
  • Page 61 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB350) Printed in Japan...

Table of Contents