28
Does the Laser (RED
light) of Pick-Up light?
Does “H” output in IC102
pin ?
Replace IC401
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
25
Does the Pick-Up lens
move up and down?
Does the focus search
signal appear between
pin and of IC203?
Replace IC203
NO
NO
Is the Focus Servo On?
(Does FEO(TP14) signal
appear?)
NO
30
31
Is the Voltage of IC102
pin (LD) 2.2V?
Replace IC102
1
Replace MD Assy
(Laser Diode of the
Pick-Up is defective.)
Replace MD Assy
(Focus actuater coil of the
Pick-Up is defective.)
Focus Servo is unstable
Is the Tracking Servo
On? (Does TEO(TP13)
signal appear?)
NO
Tracking Servo is
unstable
Replace IC501,
MD Assy or Main Circut
Board.
Is the Spindle Servo On?
(Does MDP(TP17) Signal
appear?)
NO
Spindle Servo is unstable.
Is TOC area on the Disc
read? (Does LED flicker?)
NO
NO
Does the other Disc
operate normally?
Disc is defective.
The End.
Replace Main circuit
Board or MD Assy.
D
E
F
