Toshiba SD-170EKB2 Manual de serviço - Página 4

Procurar online ou descarregar pdf Manual de serviço para Leitor de DVD Toshiba SD-170EKB2. Toshiba SD-170EKB2 37 páginas.

Spindle motor does not move

1.Whether voltage on pin 129 of

U1 varies between 0 and 3.3V

(3.3V for CD and 0V for DVD),

2.Whether peripheral components

are eroded or badly soldered.

Motor no move

Check the FFC connection

between 24P and the loader.

Yes

Check whether "RFA5V"

(+5V) voltage is normal.

Yes

Check whether laser voltage

(2.3V for DVD & 1.9V for CD)

on Collector of Q2 and Q3

Yes

Have no focus

Yes

Check/Replace the loader

1-1

Correct connection

Check the

supply

Check/Replace Q2 Q3.

Check U1 182pin FOCUS_PWM

signals

2.If there are F+, F-, T+ and T-

signals output from U7.

FOCUS_PWN waveform

Trouble shooting chart

RFA5V power

Check/ Replace U1.