Service manual

3-6
VCR ELECTRICAL TROUBLESHOOTING GUIDE
NO 8V.
Check or Replace
D110.
Is Vcc(13V) supplied to
(+) terminal in D114?
Is Q162 Base “H”?
Is Vcc(12V) supplied
to IC151 Pin1?
NO
NO
Check or Replace
D114.
NO
Check the Power
Control.
YES
YES
Check or Replace
IC151, R170, C154.
YES
(8) No 8V(TO DVD)
NO 3.3V.
Is Vcc(4V) supplied
to IC152 Pin1?
Is the Q162 Base
“H”?
YES
Check or Replace
IC152, R156, C153.
YES
(9) No 3.3V(TO DVD)
Check or Replace
D111.
NO
NO
Check the Power
Control.