Toshiba SD-33VB - Page 55

3-6
NO 3.3V.
Is Vcc(4V) supplied
to IC152 Pin1?
YES
Is the Q162 Base
“H”?
YES
Check or Replace
IC152, R156, C153.
YES
(8) No 3.3V(TO DVD)
Check or Replace
the D111.
NO
NO
Check the Power
Control.
NO FD(-).
Is -27VA supplied
to PPM01 13 pin?
YES
Is FD(+) supplied?
YES
Check ZD101.
YES
(10) -27VA, FD(-), FD(+)
Check D108 or the
trans.
NO
NO
Replace D107 or
F102.
NO 27V.
Is HSR ‘H’‘H’?
YES
Is 0V put into the
Q154 collector?
YES
Is 30V put into the
Q155 base?
Check the Q155.
YES
YES
(9) No 27V(TO CAP)
Check the HSR ‘H’
Signal from µ-com.
NO
NO
Replace Q154.
NO
Check Q153,
ZD104.