29
Is the Focus Servo ON?
(Does FEO (TP15) signal
appear?)
Does A, B, C, D signal
appear at IC101 pin ,
?
YES
YES
NO
7
8
NO
Is the Tracking Servo ON?
(Does TEI (TP14) signal
appear?)
Does E, F signal appear
at IC101 pin , ?
YES
NO
9
YES
Is TOC area on the disc
read? (Does LED flicker?)
Does the other disc
operate normally?
Normal
Disc is defective.
YES
YES
NO
10
NO
Does RFAC signal (TP16)
appear?
Is Spindle Servo ON?
(Does DMS0 signal
(TP25) appear?)
YES
YES
NO
NO
NO
Does PDA signal appear
at IC101 pin ?
43
Replace IC101.
Replace IC101.
Replace IC501.
Replace Main Circuit
Board or MD Ass’y.
NO
Refer to C.
(The Laser of Pick-Up
doesn’t light.)
F. TOC isn’t read.