48
Does the signal appear at
the Pin 22 of IC601?
Does the RF signal
appear at PN201 Pins 1,
2, 3, 4, 5?
Replace IC201.
Replace MD
Assembly.
(Pick-up is defective.)
Replace
IC301.
Does the Pick-up lens
move up and down?
Replace
IC601.
Check and
Replace
IC602.
Does the signal appear at
IC201 Pin 21?
(When Disc is rotating first)
Does the 2.2V appear
at the Pin 9 of PN201?
(When Pick-up lens moves
up and down)
Does the Focus Coil
Control signal appear
at IC604 Pin 23?
CD
DVD
200mV
0V
YES
YES
YES
YES
Does the Laser light?
Replace IC201 and check.
if not working,
Replace IC301.
Does the Focus Control
signal appear at IC301 Pin
43?
Replace
IC605.
Does the signal appear at
IC601 PIns 2, 4, 7?
6V
F
G
2.1V
2.1V
NO
YES
Replace MD Assembly.
(Spindle Motor is
defective.)
YES
2.1V
3.7V
2.5V
2.1V
2.1V
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES