Trouble Shooting Chart - Philips DVP3560K Service Manual

Spindle motor does not move
Motor no move
Check the FFC connection
between 24P and the loader.
Check whether "MO_VCC"
voltage is normal.
(+5V)
Check whether laser voltage
(1.9V for CD & 2.4V for DVD)
on L9 and L10
1.Whether voltage on pin 15of U20
varies between 0 and 3.3V (3.3V for
CD and 0V for DVD),
2.Whether peripheral components
are eroded or badly soldered.
Check opu focus
Check/Replace the loader
Go
Yes
Yes
Yes
Yes
Yes
5-1
No
Correct connection
No
Check the MO_VCC power
supply
No
Check/Replace Q5,Q6,Q7,Q8.
No
Check/ Replace U20.
1. Check U20 pin17 FOCUS_PWM signals
No
2.If there are F+, F-, T+ and T- signals output
from U2.
FOCUS_PWN waveform

Trouble shooting chart