JVC MX-J170V

SERVICE MANUAL
COMPACT COMPONENT SYSTEM
No.20859
Nov. 2000
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
MX-J170V
Area Suffix
US
U
Singapore
Other Areas
Safety precautions
Important for laser products
Preventing static electricity
Disassembly method
Adjustment method
1-2
1-3
1-4
1-5
1-21
Flow of functional operation
until TOC read
Maintenance of laser pickup
Replacement of laser pickup
Description of major ICs
1-25
1-26
1-26
1-27
Contents
OPEN / CLOSE
STANDBY
DISC CHANGE
VOLUME
PLAY REC/PLAY
CD SYNCHRO RECORDING
EJECTEJECT
PROGRAM/SET
COUNTER
RESET
ACTIVE
BASS EX.
SOUND
MODE
CLOCK
/TIMER
NTSC/PAL
AUX FM/AM
- VCD NUMBER
PRESET
VCD NUMBER +
CD TAPE
TAPE A/B
CD REC
START
A B
DUBBING
REC/PAUSE
CD 1
CD 2
CD 3
+
–
PLAY & EXCHANGER
MIC LEVEL
DEMO
PHONES
FULL-LOGIC CONTROL
MIN
MAX
MIC
NTSC/PAL COMPATIBILITY
COMPACT
DIGITAL VIDEO
VIDEO CD
SELECT
PREV NEXT
KEY
CONTROL
ECHO
MPX
/V.REPLACE
/V.MASKING
CD
SLEEP
TIMER
ON/OFF
DECK A/B TUNING MODE FM MODE
VOLUME
PREV
+
–
RM–SMXJ170V REMOTE CONTROL
T
APE
DISC SKIP
FM/AM
AUX
CD
FADE MUTING
SELECT
NEXT
VOLUME
+
–
VCD
NUMBER
KEY CONTROL
PBC
(MENU)
NTSC/PA
L
SLOW SINGLE STEP
V
.
MASKING
ECHO
REPEA
T
PROGRAM/SET
BASS
SOUND MODE
0
7
VIDEO CD
PlayBack
Control
MX-J170V

JVC MX-J170V Specifications

General

CD Player	Yes
Bluetooth	No
USB Port	No
Weight	Not found
Radio Tuner	FM
Dimensions (Main Unit)	210 x 140 x 270 mm
Functions	CD, Radio
Speakers	2
Tuner Bands	FM
Power Output	20W
Dimensions (W x H x D)	210 x 140 x 270 mm

Summary

Safety Precautions

Electrical Shock Hazard Testing

Procedure to check for hazardous leakage current after reassembly.

Laser Product Safety

Class 1 Laser Product Warnings

Warnings and precautions for Class 1 laser products to prevent radiation exposure.

Static Electricity Prevention

Handling Sensitive Components

Procedures for grounding and handling optical pickups to prevent ESD damage.

Disassembly Method

Removing Top and Side Covers

Instructions for removing the top and side covers of the main unit.

Removing the CD Changer Unit

Instructions for removing the CD changer unit from the main body.

Removing the Main Board

Detailed steps for removing the main board from the chassis.

Removing the Pickup Unit

Detailed steps for removing the pickup unit from the mechanism.

Adjustment Method

Tuner Adjustment

Adjustment locations and procedures for the tuner section.

FM THD Adjustment

Procedure for adjusting FM Total Harmonic Distortion (THD).

FM Search Level Adjustment

Procedure for adjusting FM search level sensitivity.

AM(MW) I.F Adjustment

Procedure for adjusting AM (MW) Intermediate Frequency (IF).

Cassette Deck Adjustments

Tape Speed Adjustment

Method and procedure for adjusting cassette tape speed.

Playback Level and REC Bias Adjustment

Adjustments for playback level and recording bias.

TOC Read Functional Flow

Laser Pickup Maintenance and Replacement

Laser Pickup Lens Cleaning

Instructions for cleaning the laser pickup lens.

Laser Diode Lifespan and Symptoms

Symptoms indicating end of laser diode life.

APC PC Board Resistor Caution

Warning regarding APC PC board resistor adjustment.

Laser Pickup Replacement Steps

Step-by-step guide for replacing the laser pickup.

Troubleshooting Guide

Tray OpenClose Issues

Troubleshooting steps for tray open/close malfunctions.

No Logo Display Troubleshooting

Troubleshooting steps for issues related to the logo display.

Pickup Functionality Check

Diagnostic steps to check the pickup's functionality and resistance.

Major IC Descriptions

Dual OP AMP and Inverter ICs

Pin layout and function details for BA4560/KA4558 and TC7SU04F ICs.

Cassette Amplifier and PLL ICs

Pin layout and function details for KA22291 and LC72131D ICs.

DC Motor Driver and FMAM RF ICs

Details for KA3082 (motor driver) and LA1837 (RF) ICs.

Microcontroller and Servo Processor ICs

Details for LC86P5032 (microcontroller) and SAA7327 (servo) ICs.

Block Diagrams

Main Section Block Diagram

Block diagram illustrating the main section of the system.

Sectional Block Diagrams

CD and VCD Section Block Diagram

Block diagrams showing the CD and VCD sections and their connections.

Standard Schematic Diagrams

Front Section Schematic

Schematic of the front/VCD-power circuit.

Main Section Schematic

Schematic diagram of the main section of the unit.

CD Servo Section Schematic

Schematic diagram of the CD servo section.

VCD Section Schematic

Schematic diagram of the VCD section.

Tuner Section Schematic

Schematic diagram of the tuner section.

Printed Circuit Board Layouts

Main Board PCB Layout

Component placement and routing on the main PCB.

Front Board PCB Layout

Component placement and routing on the front PCB.

CD Servo Board Layout

Component layout for the CD servo board.

MICHeadphone Board Layout

Component layout for the MIC/headphone board.

Tuner Board PCB Layout

Component layout for the tuner board.

VCD Board Layout

Top and bottom views of the VCD board component layout.

VCD Power Board Layout

Component layout for the VCD power board.

Parts List

Parts List Contents and Exploded View

Index and illustrated exploded view for general assembly parts.

CD Mechanism Assembly Parts List

Illustrated parts list for the CD mechanism assembly.

CD Changer Mechanism Assembly Parts List

Illustrated parts list for the CD changer mechanism assembly.

Cassette Mechanism Assembly Parts List

Illustrated parts list for the cassette mechanism assembly.

Electrical Parts List (Main Board)

Detailed list of electrical components for the main board.

Electrical Parts List (Front Board)

Detailed list of electrical components for the front board.

Electrical Parts List (CD Servo Board)

Detailed list of electrical components for the CD servo board.

Electrical Parts List (Tuner Board)

Detailed list of electrical components for the tuner board.

Electrical Parts List (VCD Board)

Detailed list of electrical components for the VCD board.

Packing Materials and Accessories Parts List

List of packing materials and accessories included with the unit.