Power Indicator - Not Light - Technics SU-G700E Service Manual

7.5.

Power Indicator - Not Light

Is the correct voltage +5V
present from IC5002?
Confirm between both side of C5038.
(Refer to Chapter 7.4)
Is the correct voltage presented
at connector P8401 on Main SW PCB?
Between Pin 1 and 7: +4.8 to 5.2V
Replace Main SW PCB.
No LED
<6>
YES
YES
Is there a connection
between
Pin 1 of P8401 on Main SW PCB and
Pin 7 of P8003 on OLED PCB?
Replace OLED PCB.
NO
Replace Main PCB.
Is the correct voltage presented
NO
at connector P8001 on OLED PCB?
Between Pin 9 and 7: +4.8 to 5.2V
YES
NO (No connection)
YES
22
NO
YES
NO
Is FFC between
OLED PCB and Main PCB
damaged?
YES
Replace FFC. Replace Main PCB.
Replace Main SW PCB.
NO