JVC MX-K10/30 Service Manual
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JVC MX-K10/30 Service Manual

JVC MX-K10/30 Service Manual

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SERVICE MANUAL
COMPACT COMPONENT SYSTEM
Contents
MX-K10/30
TENTATIVE
1- 2
1- 3
1- 4
1- 5
1-18
©
COPYRIGHT
2001VICTOR COMPANY OF JAPAN, LTD.
operation until TOC read
Replacement of laser pickup
Description of major ICs
Area Suffix
U ................ ASIA
UW .............. LATIN - AMERICA
1-20
1-21
1-21
1-22
No.21137
Jul.2002

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Summary of Contents for JVC MX-K10/30

  • Page 1: Table Of Contents

    MX-K10/30 SERVICE MANUAL COMPACT COMPONENT SYSTEM MX-K10/30 TENTATIVE Area Suffix U ....ASIA UW ....LATIN - AMERICA Contents Safety precautions 1- 2 Flow of functional Important for laser products 1- 3 operation until TOC read 1-20 Preventing static electricity...

  • Page 2: Safety Precautions

    Safety Precautions 1. This design of this product contains special hardware and many circuits and components specially or safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits.

  • Page 3: Important For Laser Products

    Important for laser products 1.CLASS 1 LASER PRODUCT 5.CAUTION : If safety switches malfunction, the laser 2.DANGER : Invisible laser radiation when open and is able to function. inter lock failed or defeated. Avoid direct exposure 6.CAUTION : Use of controls, adjustments or perfor- to beam.

  • Page 4: Preventing Static Electricity

    Preventing static electricity 1. Grounding to prevent damage by 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.

  • Page 5: Disassembly Method

    Disassembly method Commence disa s sembly of this set by re moving the main units a nd then proceed to the components a assemblies in side the units. Replacement of the fuses and the power IC Top cover CD changer unit Front panel assembly Chassis unit CD changer unit...

  • Page 6: Replacement Of The Fuses And The Power Ic

    <Disassembly of the main blocks of this set> Replacement of the fuses and the power IC Replacing the fuse s (See Fig.1, Fig.4) Prior to performing the following procedure, remove the left side BOARD and remove tuner PCB (Fig.4,BB) 1. Replace the fuses inside. [Caution] Be sure to use fuses with the specified ratings.
  • Page 7 Replacing the he at sink cover 1. Remove the six screws "B" from the back panel. 2. Pull the heat sink cover outward. Removing the top cover and two sides BOARD (See Fig.5 and 6) 1. Remove the six screws "C" that retain the top cover from the rear of the body.
  • Page 8 Removing the CD changer unit (See Fig.7 to 10) Prior to performing the following procedures, remove the top cover a n d both side s BOARD. [Caution] Although the CD mechanism unit can be removed without removing the CD tray panel, it is still re commended to re m ove it in order to prevent da mage.
  • Page 9 Removing the front panel assembly (See Fig.11 and 12) Prior to performing the following procedures, remove the top cover a n d both side s board. Also re move the CD changer unit. 1. Disconne ct the parallel wire a nd card wire from the connectors CN702, CN701, CN101, CN850 on the power a mp and supply PCB.
  • Page 10 <Disassembly of units and assembly inside this set> Removing the CD PCB (See Fig.13 and 14) Prior to performing the following procedures, remove the top cover a n d both side s board. Also re move the CD changer unit. 1.
  • Page 11 Removing the CD changer mechanism assembly (See Fig.15 to 17) Prior to performing the following procedures, remove the top cover and both sides board. Also remove the CD changer unit. 1. Remove the screws "d" from the front chuch base of the CD changer mechanism unit.
  • Page 12 Removing the CD pickup (See Fig.18) Prior to performing the following procedures, re- move the top cover and both sides board. 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"...

  • Page 13: Removing The Cassette Deck Mechanism

    Removing the cassette deck mechanism (See Fig.22) Prior to performing the following procedure, remove the top cover and both sides board. Also remove the CD changer unit. Also remove the front panel assembly. 1. Remove the five screws "Z" retaining the cassette deck mechanism.
  • Page 14 Removing the switch PCB and sound mode and CD function switch PCB (See Fig.24 to 27) 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.
  • Page 15 Removing the cassette deck main motor, and replacing the main belts (See Fig. 22, 28 and 29) 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.

  • Page 16: Removing The Cassette Deck Heads

    Removing the cassette deck heads (See Fig. 22 and 31) Prior to performing the following procedures, remove the top cover and both side board. Also remove the CD changer unit. Also remove the front panel assembly. 1. Remove the five screws "O" that retain the cassette deck mechanism.
  • Page 17 Removing the power amp and supply PCB and the power trans PCB (See Fig. 2, 3, 32, 34 to 37) Prior to performing the following procedures, remove the top cover and both sides board. Also remove heat sink cover.(Fig.4) 1. Remove the two screws "A" connecting the heat sink cover to the rear panel.(Fig.2, 3) 2.

  • Page 18: Adjustment Method

    Adjustment method Radio input signal Measurement instruments required AM modulation frequency : 400Hz for adjustment Modulation factor : 30% FM modulation frequency : 400Hz 1. Low frequency oscillator, Frequency displacement : 22.5kHz This oscillator should have a capacity to output 0dB to 600ohm at an oscillation frequency of 50Hz- Frequency Range 20kHz.

  • Page 19: Tuner Section

    Arrangement of adjusting positions Tape recorder section Measur ement Standar d Adju stin g Items Measurement method condi tions values posi tions Cassette Head Test tape : 1. Playback the test tape VT703 (10KHz) or equivalent. Maximum output Adjust the VT703 (10kHz) Azimuth Alignments head azimuth...

  • Page 20: Flow Of Functional Operation Until Toc Read

    Flow of functional operation until TOC read Check Point Slider turns REST Power ON Play Key Confirm that the voltage at the pin5 SW ON. of CN602 is "H"\"L"\"H". Automatic tuning of TE offset Check that the voltage at the pin40 Laser ON of IC601 is + 5V? Detection of disc...

  • Page 21: Maintenance Of Laser Pickup

    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 with a alcohol soaked cot- ton swab. (2) Life of the laser diode When the life of the laser diode has expired, the following symptoms will appear.

  • Page 22: Description Of Major Ics

    Description of major ICs AN22000A (IC611) : CD-DA Head Amp. 1. Terminal layout 2. Pin function 3. Block diagram 1-22...
  • Page 23 BA5936S (IC621) : 6 channel BTL driver 1. Block diagram 2. Pin function 1-23...
  • Page 24 BA15218/BA15218F(IC102/IC852): Dual operational amplifier 1.Terminal layout & block diagram BA3837(IC103): MIC Mixer 1.Terminal layout & block diagram 2. Pin function BU9253AS(IC851): Low pass filter & echo mixer 1.Terminal layout & block diagram 2. Pin function 1-24...
  • Page 25 LA1823DIP (IC1) : 1chip AM/FM, MPX tuner system 1. Block diagram 2. Pin function 1-25...
  • Page 26 LC72136N (IC2) : PLL Frequency synthesizer 1.Terminal layout 2. Block diagram 3. Pin function 1-26...
  • Page 27 TA8189N (IC401) : REC/PB amp. 1. Terminal layout 2. Block diagram 3. Pin function 1-27...
  • Page 28 TC74HC4094AP (IC402) : 8-bit shift and store resister 1.Terminal layout 2. Block diagram 1-28...
  • Page 29 TDA7440D (IC101) : Audio processor 1. Terminal layout 2. Block diagram 1-29...
  • Page 30 MN662748RPM (IC601) : Digital servo & digital signal processor 1. Terminal layout 2. Pin function 1-30...

  • Page 31: Mx-K10/30

    MX-K10/30 VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK B.U.10-1, 1 Chome, Ohwatari-machi, maebashi-city, 371-8543, Japan No.21137 200207...

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