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CH-X470RF
SERVICE MANUAL
CD CHANGER
CH-X470RF
CO MP AC T DIS C CH AN GE R
12 D ISC
CH-X470
KS-RF50
Area Suffix
J ------ Northern America CH-X470RF is a combination of CH-X470 and KS-RF50. KS-RF50 is a combination of Remote control and the RF unit.
Contents
Safety precaution Preventing static electricity Disassembly method Forced eject procedures 1-2 1-3 1-4 1-20 Trouble shooting Flow of functional operation until TOC read Description of major ICs 1-21 1-23 1-27
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
No.49668 Dec. 2001
1
3
4
2
TC9490FA
5
Block Diagram
A
Data slicer
TA2147F-X
RF amp. AGC amp. VCO PLL TMAX
Synchronous signal EFM demodulator
Correction circuit
D/A converter
LPF
LPF
Mute
Audio output
CLV servo
RAM
Tracking actuator
Feed motor Feed motor Spindle motor
servo signal interface Focus eror amp. Tracking error amp. Focus servo amp. Tracking servo amp.
Sub code decording A/D Digital equalizer auto adjustment Servo control Micon interface
Focus actuator
B C
FAN8037
Focus driver
PWM
D/A
Tracking driver
Microprocessor control
Bus buffer
J-BUS
Feed driver Mecha.detect switch Eject switch Spindle driver
Positioning motor driver
Tray motor driver
CH-X470RF
2-1
Standard schematic diagrams
Main circuit 1/2
CH-X470RF
5
4
3
2
1
SIGNAL
A
B
C
D
E
F
G
2-3
CH-X470RF
CH-X470RF
Main circuit 2/2
5
4
3
2
1
SIGNAL
A
B
C
2-4
D
E
F
G
H