JVC MX-J100 Service Manual
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JVC MX-J100 Service Manual

JVC MX-J100 Service Manual

Compact component system
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See also: Instruction Manual
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
SP-MXJ100
POWER
TIMER
SLEEP
ON/OFF
PROGRAM
REPEAT
ACTIVE
SOUND
/SET
BASS EX.
MODE
CD
TAPE A/B TUNING MODE FM MODE
CD
TAPE
FM/AM
AUX
DISC SKIP
+
VOL.
FADE
MUTING
–
VOL.
RM–SMXJ100J
REMOTE CONTROL
COMPACT
DIGITAL AUDIO
Contents
Adjustment method
MX-J100
CA-MXJ100
STANDBY
1
CD
POWER
PLAY & EXCHANGER
COUNTER
CLOCK/TIMER
RESET
DEMO
ACTIVE BASS EX.
SOUND MODE
AUX
FM/AM
CD
TAPE
PROGRAM/SET
- TUNING
TUNING
+
PHONES
REPEAT
COMPU
–
PRESET
+
PLAY
CONTROL
EJECT
PLAY
FULL-LOGIC CONTROL
CD SYNCHRO RECORDING
1-2
1-3
1-4
1-5
1-19
COPYRIGHT
2000 VICTOR COMPANY OF JAPAN, LTD.
SP-MXJ100
OPEN / CLOSE
2
3
CD
CD
DISC CHANGE
COMPACT
DIGITAL AUDIO
VOLUME
+
–
CD REC
START
TAPE A/B
REC/PAUSE
A
B
DUBBING
EJECT
REC/PLAY
J
C
Flow of functional operation
until TOC read
MX-J100

Area Suffix

U.S.A.
Canada
1-23
1-24
1-24
1-25
No.20817
Jun. 2000

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Summary of Contents for JVC MX-J100

  • Page 1 MX-J100 SERVICE MANUAL COMPACT COMPONENT SYSTEM MX-J100 SP-MXJ100 SP-MXJ100 CA-MXJ100 STANDBY OPEN / CLOSE DISC CHANGE POWER COMPACT DIGITAL AUDIO PLAY & EXCHANGER VOLUME COUNTER CLOCK/TIMER RESET DEMO ACTIVE BASS EX. SOUND MODE – POWER TIMER SLEEP ON/OFF PROGRAM REPEAT...

  • Page 2: Safety Precautions

    MX-J100 Safety precautions 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer.
  • Page 3 MX-J100 Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam.
  • Page 4 MX-J100 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 MX-J100 Disassembly method Top cover <Main body> Removing the top cover and the side covers (See Fig.1 to 3) Remove the three screws A on the back of the body and the two screws B on both sides of the body.
  • Page 6 MX-J100 Removing the CD Tray fitting CD tray (See Fig. 4 to 6) OPEN/CLOSE button POWER button Prior to performing the following procedure, remove the top cover and the side covers. ATTENTION: Be sure to remove the CD tray fitting before removing the CD changer unit.
  • Page 7 MX-J100 Removing the CD changer unit CD servo board (See Fig.8 to 10) SCW1 CD changer unit Prior to performing the following procedure, remove the top cover, the side covers and the CD Tray fitting. Disconnect the card wire from connector SCW1 of the CD servo board on the back of the CD changer unit.
  • Page 8 MX-J100 Removing the front panel assembly Mother (main) board (See Fig.11 to 13) Front panel assembly CCW1 Prior to performing the following procedure, remove the top cover, the side covers, the CD Tray fitting and the CD changer unit. CCW2 There is no need to remove the rear panel.
  • Page 9 MX-J100 Removing the rear panel (See Fig.14) Rrear panel Prior to performing the following procedure, remove the top cover, the side covers, the CD Tray fitting and the CD changer unit. There is no need to remove the front panel assembly.
  • Page 10 MX-J100 Removing the heat sink Heat sink cover plate (See Fig.17 and 18) Prior to performing the following procedure, remove the mother(main) board. Remove the three screws L attaching the heat sink cover plate. Remove the two screws M attaching the power IC to the heat sink and the three screws N attaching the heat sink to the mother (main) board.
  • Page 11 MX-J100 <Front panel assembly> Tab h Tab h Prior to performing the following procedure, remove UCW2 Tab h the top cover, the side covers, the CD tray fitting and Power / CD switch board the front panel assembly. Removing the power / CD switch board System board (See Fig.22)
  • Page 12 MX-J100 <CD changer unit> Prior to performing the following procedure, remove the CD changer unit. Removing the CD tray (See Fig.26 to 28) Turn the black loading pulley gear marked c on the under side of the CD changer unit in the direction of the arrow and draw the CD tray toward the front until it stops.
  • Page 13 MX-J100 Removing the sensor board / the tray motor (See Fig.31 to 33) Prior to performing the following procedure, remove the CD tray. Tab j Release the two tabs j attaching the sensor board on the under side of the CD tray.
  • Page 14 MX-J100 Removing the belt, the CD servo board and the switch board (See Fig.34 and 35) Belt Prior to performing the following procedure, remove the CD tray. Detach the belt from the pulley on the upper side of the CD changer unit (Do not stain the belt with grease).
  • Page 15 MX-J100 Removing the CD mechanism holder assembly (mechanism included) Motorconnecter (See Fig.36 to 39) Disconnect the harness from connector on the CD mechanism board in the CD mechanism assembly on the under side of the CD changer unit. Disconnect the card wire from the pickup unit connector.
  • Page 16 MX-J100 <CD mechanism section> Shaft Shutter Pickup unit Removing the CD mechanism holder from the CD chassis to remove the CD mechanism. (Refer to "Removing the CD mechanism holder assembly" (Pag.2-11)) Removing the pickup unit. 1. Loosen the two screws A fixing the chassis.(Fig.1) 2.
  • Page 17 MX-J100 R/P Head <Cassette mechanism section> • Removing the record/playback mechanism. Removing the R/P head. 1. Remove the screw A on the right side of the R/P head.(Fig.1, Fig.2) 2. Remove the screw B on the left side of the R/P head.(Fig.1, Fig.2)
  • Page 18 MX-J100 Motor Mecha. terminal board Removing the motor. 1. Remove the two screws D fixing the motor. Be careful to grease's splash when the drive belt comes off.(Fig.5, Fig.6) 2. Unsolder the motor terminal.(Fig.5) Removing the mechanism board. Unsolder the four parts a on the solenoid...
  • Page 19 MX-J100 Ajustment method Tuner Adjustment Location of Tuner PCB AM(MW) OSC Adjustment AM(MW) RF Adjustment ITEAM 520~1720 KHz 590 KHz Received FREQ. MW -ANT Adjustment Non- Adjustment point Maximum Output(Fig1-4) 1~7.0 ±0.5V Output MAIN TESTER Fig 1-4 OSC Voltage 1-19...
  • Page 20 MX-J100 FM THD Adjustment Output Antenna SSG FREQ. Terminal 98 MHz Oscilloscope FM S.S.G Adjustment Input point FM DETECTOR COIL Speaker (TL3) Terminal output Input 60 dB Output Distortion Meter Minumum Distortion (0.3% below) (Figure 1-1) Figure1-1 IF CENTER and THD Adjustment...
  • Page 21 MX-J100 Cassette deck 1. To adjust tape speed Notes SPK OUT Cassette Deck Frequency Counter 1) Measuring tape: VT 712 (or equivalent) (Tapes recorded with 3kHz) output 2) Connect the cassette deck to the frequency counter as in figure 1-5.
  • Page 22 MX-J100 2. To adjust playback lebel/REC Notes 1) Before the actual adjustment, clean the play/recording head. 2) Measuring tape : i) VT 705(or equivalent 12.5kHz AZIMUTH control) 3) The cassette deck is connections as shown in figure 1-7. 1 Adjust Deck A Play Level...
  • Page 23 MX-J100 Flow of functional operation until TOC read Check Point Play Key Power ON RESET a CD LSI Confirm that the voltage at the pin38 of KB9223(IC922) is "L" "H". Confirm that the voltage at the pin41 LIMIT SW ON of KB9223(IC922) is "H"...
  • Page 24 MX-J100 Maintenance of laser pickup Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to Turn off the power switch and,disconnect the clean the lens with a alcohol soaked cotton power cord from the ac outlet.
  • Page 25 MX-J100 Description of major ICs LC75341 (FIC1):Function 1-25...
  • Page 26 MX-J100 LC72131D (HIC1) : PLL 18 PD PHASE DETECTOR REFERENCE CHARGE PUMP DIVIDER XOUT 19 AIN FMIN SWALLOW COUNTER UNLOCK 1/16, 1/17 4D1ts 20 ADUT DETECTOR 12bita PROGRAMMABLE AMIN DIVIDER DATA SHIFT REGISTER UNIVERSAL 12 IFIN LATCH COUNTER P0WER RESET...
  • Page 27 MX-J100 LA1837 (TIC1) : FM IF/DET AM RF/IF/DET 1-27...
  • Page 28 MX-J100 KS9286B (IC928) : DSP/D-A Converter SQDT SUBCODE SUBCODE SUBCODE-Q SYNC OUTPUT REGISTER SQCK DETECTOR 23BIT EFMI PHASE SHIFT DEMODULATOR DETECTOR REGISTER CNTVOL ADDRESS DIGITAL DPFIN GENERATOR FRAME SYNC DETECTOR DPFOUT PROTECTOR DPDO INSERTER SRAM SMEF DIGITAL SMON SMDP SERVO...
  • Page 29 MX-J100 KB9223 (IC922) : ASSP(CD RF) RF– FDFCT Focus Phase RF Amp Micom Data RF Amp Compensation Interface Logic & Offset cancel circuit TDFCT Focus Error Amp FE-BIAS Adjustment Tracking Phase Compensation Block Tracking Error Amp & Jump Pulse GEN.
  • Page 30 MX-J100 KA9258D (IC925) : 4-ch Motor driver 28 27 26 25 24 23 22 21 20 19 18 17 16 15 REGULATOR T • S D MUTE 10 11 12 13 14 KA22291(DIC1) : Cassette amp. MUTE MUTE NF(2) PR IN(2)
  • Page 31 MX-J100 VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK B.U. 10-1,1Chome,Ohwatari-machi,maebashi-city,371-8543,Japan Printed in Japan No.20817 200006(V)

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Sp-mxj100Ca-mxj100

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