Table of Contents
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
TIMER
ON/OFF SLEEP
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-SMXJ100E
REMOTE CONTROL
SP-MXJ150R
Contents
MX-J150R
STANDBY
CD
1
PLAY & EXCHANGER
COUNTER
CLOCK
ACTIVE
SOUND
RESET
/TIMER
BASS EX.
MODE
DEMO
DISPLA
PTY
- SELECT +
MODE
Y
/EON
CD
TAPE
AUX
FM/AM
PROGRAM/SET
- TUNING
TUNING +
PHONES
REPEAT
COMPU
PRESET
PLAY
-
+
CONTROL
EJECT
PLAY
FULL-LOGIC CONTROL
CD SYNCHRO RECORDING
CA-MXJ150R
1-2
1-3
1-4
1-5
1-19
COPYRIGHT
2000 VICTOR COMPANY OF JAPAN, LTD.
OPEN / CLOSE
CD
2
CD
3
DISC CHANGE
COMPACT
DIGITAL AUDIO
VOLUME
+
-
CD REC
TAPE A/B
START
REC/PAUSE
A
B
DUBBING
EJECT
REC/PLAY
SP-MXJ150R
until TOC read
Replacement of laser pickup
MX-J150R
COMPACT
DIGITAL AUDIO
Area Suffix
E
Continental Europe
EN
Northern Europe
EV
Eastern Europe
1-23
1-24
1-24
1-25
No.20858
Oct. 2000
Table of Contents
Related Manuals for JVC MX-J150R
Summary of Contents for JVC MX-J150R
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Page 1: Table Of Contents
MX-J150R SERVICE MANUAL COMPACT COMPONENT SYSTEM MX-J150R STANDBY OPEN / CLOSE DISC CHANGE COMPACT DIGITAL AUDIO PLAY & EXCHANGER VOLUME COUNTER CLOCK ACTIVE SOUND RESET /TIMER BASS EX. MODE DEMO DISPLA – SELECT + MODE /EON – TAPE FM/AM TIMER... -
Page 2: Safety Precautions
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. Replacement parts must be identical to those used in the original circuits. -
Page 3: Important For Laser Products
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. procedures other than those specified herein may result in 3.CAUTION : There are no serviceable parts inside the hazardous radiation exposure. -
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. 2. -
Page 5: Disassembly Method
Disassembly method Top coverRemoving the top cover & the side covers (See Fig.1 to 3) A on the back of the body and the two screws B on both sides of the body. Remove the top cover upward from behind. Remove the two screws C attaching the side covers on the back of the body and the six screws D on both... - Page 6 Removing the CD tray fitting CD tray (See Fig.4 to 6) OPEN/CLOSE button POWER button ATTENTION: Be sure to remove the CD tray fitting before removing the CD changer unit. Fig.4 Press the OPEN/CLOSE button to insert the CD tray. Joint b CD tray fitting Removing the CD tray fitting...
- Page 7 Removing the CD changer unit CD servo board (See Fig.8 to 10) SCW1 CD changer unit E attaching the CD changer Main board unit on the back of the body. Fig.8 Draw the CD changer unit upward from behind while pulling the rear panel outward.
- Page 8 Removing the front panel assembly Front panel assembly Main board (See Fig.11 to 13) CCW1 CCW2 Joint d earth wire F and the two screws G attaching Fig.11 the front panel assembly on both sides of the body. Remove the screw V attaching the earth terminal extending from the front compartment.
- Page 9 Removing the rear panel (See Fig.14) Rear panel I attaching the main board and the tuner board to the rear panel on the back of the body. Remove the three screws J attaching the heat sink to the rear panel on the back of the body. Remove the three screws K attaching the rear panel on the back of the body.
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Page 10: See Fig
Removing the heat sink Heat sink cover plate (See Fig.17 and 18) M attaching the heat sink cover plate. Remove the two screws N attaching the power IC to the heat sink and the three screws O attaching the heat sink to the main board. Fig.17 Removing the tuner board (See Fig.18 to 20) -
Page 11
Tab h Tab h Prior to performing the following procedure, remove UCW9 Tab h Power / CD the top cover, the side covers, the CD tray fitting and switch board the front panel assembly. Removing the power / CD switch board System board (See Fig.22) Headphone... -
Page 12: Cd Changer Unit
Prior to performing the following procedure, remove the CD changer unit. Removing the CD tray (See Fig.26 to 28) 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 Removing the sensor board & the tray turn table motor assembly (See Fig.31 to 33) Tab j j attaching the sensor board on the under side of the CD tray. Disconnect the harness from connector CW1 on the sensor board and release the harness from the two hooks k.
- Page 14 Removing the belt, the CD servo board & the switch board (See Fig.34 and 35) Belt CD changer unit Fig.34 Y attaching the CD servo CD servo board board. First release the n side of the two tabs n and Tabs o two tabs o attaching the CD servo board motor to Soldered parts...
- Page 15 Removing the CD mechanism holder assembly (mechanism included) Motor connector (See Fig.36 to 39) Z attaching the shaft on the right side of the CD mechanism holder assembly. Pull outward the stopper fixing the shaft on the left side and remove the CD mechanism holder assembly CD changer unit from behind in the direction of the arrow.
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Page 16
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
R/P Head
• 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) Remove the erase head. - Page 18 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 Motor coil terminal.(Fig.5) 2.
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Page 19: Adjustment Method
Adjustment method Tuner * Adjustment Location of Tuner PCB AM(MW) OSC Adjustment ITEAM AM(MW) RF Adjustment 520~1720 KHz 590 KHz Received FREQ. Non- MW -ANT Adjustment Adjustment point Maximum Output(Fig1-4) 1~7.0±0.5V Output MAIN TESTER Fig 1-4 OSC Voltage... - Page 20 Output Antenna Terminal Oscilloscope FM S.S.G Input Speaker Terminal output Input Distortion Meter Figure1-1 IF CENTER and THD Adjustment FM Antenna 28 dB SSG FREQ. 98 MHz Adjustment BEACON point SENSITIVITY (TSR1) SEMI-VR(20K½) FM IN FM S.S.G “TUNED” of FL T 20 k½...
- Page 21 Cassette deck 1. To adjust tape speed Notes Cassette Deck Frequency Counter 1) Measuring tape: i) MTT -111 (or equivalent) (Tapes recorded with 3kHz) SPK OUT ii) MTT -5512 (or equivalent) output 2) Connect the cassette deck to the frequency counter as in figure 1-5.
- Page 22 2. To adjust playback lebel/REC Notes 1) Before the actual adjustment, clean the play/recording head. 2) Measuring tape : i) MTT-114NA(or equivalent 12.5kHz AZIMUTH control) ii) MTT -5512 3) The cassette deck is connections as shown in figure 1-7. 1 Adjust Deck 1 Play Level Pre-Setup Pre-Setup Item...
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Page 23: Flow Of Functional Operation Until Toc Read
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" "L"... -
Page 24: Maintenance Of Laser Pickup
Replacement of laser pickup Maintenance 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 cotton swab. (2) Life of the laser diode When the life of the laser diode has expired, the following symptoms will appear. -
Page 25: Description Of Major Ics
Description of major ICs KA22291 (DIC1) : Cassette amp. MUTE MUTE NF(2) PR IN(2) (IN2) ALC RECOUT(2) 22 21 18 15 100K 100K REC NF(2) PBOUT(2) INPUT INPUT REC IN(2) REC.BIAS RECORD LREF PB.BIAS MODE CONTROL PLAYBACK /BIAS CIRCUIT LREF REC GND INPUT REC IN(1) - Page 26 KB9223 (IC922) : ASSP(CD RF) RF– FDFCT RF Amp...