Toshiba SD-270EKB2 서비스 매뉴얼 - 페이지 4

{카테고리_이름} Toshiba SD-270EKB2에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Toshiba SD-270EKB2 37 페이지.

Spindle motor does not move

Motor no move

Check the FFC connection

between 24P and the loader.

Check whether "RFA5V"

(+5V) voltage is normal.

Check whether laser voltage

(2.3V for DVD & 1.9V for CD)

on Collector of Q2 and Q3

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.

Check/Replace the loader

Yes

Have no focus

Yes

1-1

Correct connection

Check the RFA5V power

supply

Check/Replace Q2 Q3.

Check/ Replace U1.

Check

FOCUS_PWM signals

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

signals output from U7.

FOCUS_PWN waveform

Trouble shooting chart

182pin