3-4
< MAIN board top view >
NO BOOTING
When you plug power cord and turn the unit on, LED won’t turn on, the unit won’t read disc normally.
1-3. Please check MAIN board IC IC603 signal and its peripheral circuit.
1) Please check if output voltage 3.3 V from IC603 pin1, 3, 9, 14, 27, 43, 49 is normal.
If output voltage 3.3 V is not normal, please check 3.3 V power circuit of MAIN board.
2) Please check every signal connected between IC603 and IC601 pin45 ~ 86, especially including
DATA and ADDRESS signal.
If DATA and ADDRESS signal is not normally output, please check if IC603 is in failure.
ONE POINT REPAIR GUIDE
IC601
(MPEG)
IC603
(SDRAM)
jomi
