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TROUBLESHOOTING
1.3 No Power DDCON/LDO (LDO Check)
START
yes
Check Vcc voltage
C415
Is voltage >4V?
yes
Check Enable pin
voltage
Is voltage >3V?
yes
Change LDO IC
no
Check 5V_MAIN DDCON (IC600)
no
1.2 No Power U-Com Failure
or
Enable source
Please Refer page 30 for Ref Number.
Board
Operation IC Ref
BM5STY
LDO
IC403
Voltage supply
3.3V_MAIN_H
49
SYS SET
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