Technics SU-G700E Service Manual page 18

No power
(from the previous section)
YES
<4>
Is the output voltage presented
from IC5001 Power IC?
YES
<4>
+4.8 to 5.2V : between both side of C5026
<5>
Is the output voltage presented
from IC5005 Power IC?
YES
IC5005 operates when connecting
AC mains lead to the wall outlet.
+3.3 V is output in both power on
and off condition.
If no +3.3V is output, main
microcomputer won't function.
Go to next page.
Disconnect FFC between
NO
Main PCB and OLED PCB.
Is the symptom
still No Power?
YES
Replace Main PCB.
NO
Replace Main PCB.
<5>
+3.1 to 3.4V :
between both side of C5056
18
NO
NO
Is FFC damaged?
YES
Replace FFC. Replace OLED PCB.
Main PCB
Main PCB