Toshiba SD-170EKB2 서비스 매뉴얼 - 페이지 6
{카테고리_이름} Toshiba SD-170EKB2에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Toshiba SD-170EKB2 37 페이지.
페이지 인쇄
All output voltages on the power board is 0V or deviated.
Check
there is 300V on C1
Check
oscillating signal on Pin6 of
U1
Check if +5V, , +12V and
-12V are short.
Check whether the components in the
short-circuit voltage are defected or eroded.
All output voltages on
the power board is 0V or
deviated
Yes
Check whether
F1 is blown
No
whether
Yes
whether
100KHz
Yes
Yes
1-3
Yes
Replace F1
No
Replace C1&C2 if D1, D2, D3, D4 are
normal.
No
Check/ replace U1.
U1(PIN 3 - RC waveform)
No
Check whether U1 are eroded.
Trouble shooting chart
U1(PIN 8 - Drain waveform)