JVC FS-SD770R User Manual

SERVICE MANUAL
COMPACT COMPONENT SYSTEM
No.20923
Mar. 2001
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
FS-SD550R / FS-SD770R / FS-SD990R
Contents
Safety Precautions
Important for laser products
Preventing static electricity
Dismantling and assembling
the traverse unit
Disassembly method
Maintenance of laser pickup
Replacement of laser pickup
Flow of functional operation
unit TOC read
Method of connecting
treatment device wire
Description of major ICs
2-1
2-2
2-3
2-4
2-5
2-14
2-14
2-15
2-16
2-17
REMOTE CONTROL
DIMMER SLEEP
DISPLAY FM MODE
AHB PRO
CD
PROGRAM
DOOR
SLIDE
AUTO
PRESET
REPEATRANDOM
BASS TREBLE CANCEL
UP
SET
DOWN
MD/AUX FM / AM
VOLUME
CD
FADE MUTING
PTY/EON DISPLAY MODE
FS-SD550R
FS-SD770R, FS-SD990R
REMOTE CONTROL
DIMMER SLEEP
DISPLAY FM MODE
AHB PRO
CD
PROGRAM
DOOR
SLIDE
AUTO
PRESET
REPEATRANDOM
BASS TREBLE CANCEL
UP
SET
DOWN
MD/AUX FM / AM
VOLUME
CD
FADE MUTING
PTY/EON DISPLAY MODE
The difference between FS-SD550R and FS-SD770R FS-SD990R is only the speaker systems.
The difference between FS-SD770R and FS-SD990R is cabinets of the speaker.
FS-SD550R
FS-SD770R / FS-SD990R
Area Suffix
B
E
EN
U.K
Continental Europe
Northern Europe
CD-ROM No.SML200103
These models not have adjustment.

JVC FS-SD770R Specifications

General

Type	Stereo System
CD Player	Yes
Radio Tuner	FM/AM
Bluetooth	No
USB Port	No
Remote Control	Yes
Speaker Type	2-way
Weight	4.5 kg
Power Output	30W
Functions	CD, Radio
CD Player Type	Single
Speaker Size	10 cm
Speakers	Included

Summary

Safety Precautions

Leakage Current Testing

Procedure for performing isolation and leakage current tests for electrical safety.

Laser Product Safety Guidelines

Static Electricity Prevention

Work Area Grounding

Methods for grounding the workbench to protect against static discharge.

Optical Pickup Handling Precautions

Precautions for handling the optical pickup to prevent ESD damage.

Traverse Unit Handling Guidelines

Guidelines for safely handling the sensitive traverse unit.

Traverse Unit Service Procedures

Main Unit Disassembly Steps

CD Door Removal

Rear Cover Removal

Side Cover Removal

Front Panel Assembly Removal

CD Mechanism Base Assembly Removal

Door Arm Assembly Removal

Internal Component Board Removals

Power Amplifier Board Removal

Procedure to remove the power amplifier board.

Additional Component Removals

Main Board Removal

Procedure to remove the main circuit board.

Laser Pickup Service

Pickup Maintenance Procedures

Cleaning the laser pickup lens and identifying laser diode end-of-life symptoms.

Laser Pickup Replacement

Procedure for replacing the optical pickup and post-replacement operational checks.

Functional Operation Flowchart

Major Integrated Circuit Details

IC501 Audio Sound Control (BD3861FS-X)

Servo Driver IC Details

IC602 Servo Driver (LA6541-X)

CPU IC Details

IC701 CPU (UPD780024AGKB19)

Pin layout and block diagram for the UPD780024AGKB19 CPU.

CPU Pin Function Descriptions

UPD780024AGKB19 Pin Functions

Digital Servo IC Details

IC603 Digital Servo Processor (MN662748RPM)

Pin layout and block diagram for the MN662748RPM digital servo and signal processing IC.

Digital Servo IC Pin Functions

MN662748RPM Pin Functions

Power Amplifier IC Details

IC301 2ch BTL Power IC (LA4905)

RF & Servo Amplifier IC Details

IC601 RF & Servo AMP (AN22000A)

Pin layout, block diagram, and pin functions for the AN22000A RF and servo amplifier IC.