JVC MX-K3

SERVICE MANUAL
COMPACT COMPONENT SYSTEM
No.20994
Jun. 2001
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
MX-K3
MX-K3
Contents
Safety precautions
Important for laser products
Preventing static electricity
Disassembly method
Adjustment method
Flow of functional
operation until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
Wiring connections
1-2
1-3
1-4
1-5
1-19
1-21
1-22
1-22
1-23
1-33
Area Suffix
UJ US military
US
UT
UW
Singapore
Taiwan
Brazil, Mexico, Peru
UX
UY
Saudi Arabia
Argentina
ACTIVE
BASS EX.
COMPACT COMPONENT SYSTEM MX-K3
STANDBY/ON
STANDBY
PHONES
REPEAT PROGRAM RANDOM
/STOP REC START DUBBING
REC START
CD
CLOCK
/TIMER
TAPE
A/B
DISC SKIP
EJECT
PLAY
A
REC/PLAY
B
CD CONTROL
C
D
1
AUX
F
M
/A
M
C
D
T
APE
C
D
2
C
D
3
CD-R/RW PLAYBACK
CANCEL SET
PRESET
TUNNIG
/ DEMO
FULL - LOGIC CONTROL CD SYNCHRO RECORDING
EJECT
R
O
C
K
C
L
A
S
S
I
C
P
O
P
V
O
L
U
M
E
3-CD
PLAY & EXCHANGE
SOUND
MODE
RM-SMXK3U REMOTE CONTROL
1 2 3
4 5 6
7 8 9
10 +10 FM MODE
FM /AM
AUX
SLEEP
STANDBY/ON
CD 1 CD 2 CD 3 CD
SOUND
MODE
ACTIVE
BASS EX.
FADE
MUTING
ECHO
KARAOKE
VOLUME
PROGRAM
/RANDOM
REPEAT TAPE A/B
TAPE
COMPU PLAY
CONTROL
MAXMIN
MIC MIC
VOL
1 BIT
DUAL D/A
CONVERTER
COMPU PLAY CONTROL
ACTIVE BASS EXTENSION
CA-MXK3SP-MXK3 SP-MXK3

JVC MX-K3 Specifications

General

Brand	JVC
Model	MX-K3
Category	Speaker System
Language	English

Summary

Safety Precautions

General Safety Guidelines

Electrical Safety Testing Procedures

Methods for leakage current testing and electrical shock hazard verification using specific equipment.

Laser Product Information

Class 1 Laser Product Warnings

Dangers and warnings associated with Class 1 laser products, including invisible radiation risks.

Laser Unit Handling and Safety

Cautions for safe handling and operation of the laser unit, emphasizing not to defeat safety switches.

Static Electricity Prevention

Grounding and Anti-Static Measures

Procedures for grounding the workbench and yourself to prevent Electrostatic Discharge (ESD) damage.

Optical Pickup Handling Precautions

Guidelines for safely handling the optical pickup and CD changer unit to prevent damage.

Disassembly and Servicing Procedures

Fuse and Power IC Replacement

Instructions for replacing fuses and the power IC, including heat sink removal steps.

CD Changer Unit Removal

Front Panel Assembly Removal

Main Board Removal

Instructions for disconnecting wires and removing the main board.

CD Changer Mechanism Assembly Removal

Steps to remove springs, screws, and the CD changer mechanism assembly.

CD Pickup and Tray MotorBelt Procedures

Procedures for removing the CD pickup and replacing tray motor/belts.

Cassette Deck Mechanism and Earphone Jack Board Removal

Cassette Deck Motor, Belts, and Leaf Switches Removal

Cassette Deck Heads and 3-Pin Regulator Removal

Amp., Voltage Selector, and AC Power Board Removal

Adjustment and Measurement

Required Measurement Instruments and Settings

Measurement Precautions

Important safety and procedural precautions for measurements.

Adjustment Procedures

Tape Recorder Section Adjustments

Tuner Section Adjustments

Laser Pickup Maintenance and Replacement

Lens Cleaning and Lifespan Indicators

Pickup Replacement and APC Adjustment

Steps for replacing the laser pickup and adjusting the APC circuit.