Philips DVP3800, DVP3879, DVP3893, DVP3855, DVP3896 Spindle motor does not move, Motor no move

4-1 Trouble shooting chart

Spindle motor does not move

Motor no move

Go

Check the FFC connection between 24P and the loader.

Yes

Check whether “M5V” (+5V) voltage is normal.

Yes

Check whether laser voltage

(1.9V for CD & 2.4V for DVD)

on L101(R35) and L102(R32)

Yes

1.Whether voltage on pin14/pin15 of U1 varies between 2.4V and 3.3V (PIN14=2.4V and PIN15=3.3V for CD; PIN14=3.3V and PIN15=2.4V for DVD), 2.Whether peripheral components are eroded or badly soldered.

No

No

No

No

Correct connection

Check the M5V power supply

Check/Replace Q103,Q104.

Check/ Replace U1.

Yes

Check opu focus

Yes

Check/Replace the loader

1.Check U1 18pin FOCUS_PWM

No signals

2.If there are F+, F-, T+ and T- signals output from U10.

FOCUS_PWN waveform