Table of Contents
Advertisement
TROUBLESHOOTING
1.3 No Power DDCON/LDO (DDCON Check) – XR-83A80*
START
yes
Check Vcc voltage
C4xx/C8xx
Is voltage >3V?
yes
Check Enable pin
voltage
Is voltage >3V?
yes
Change DDCON
Or LDO IC
no
Check 3.3V_STBY (G* board)
no
1.2 No Power U-Com Failure
or
Enable source
Please Refer page 31 for Ref Number.
Board
Operation IC Ref
Voltage supply
DC/DC
IC418
LDO
IC403
3.3V_MAIN_H
BM5S21
LDO
IC806
1.8V_M5_ET_STBY
LDO
IC809
3.3V_M5_STBY
5.0V_STBY_H
36
SYS SET
Advertisement
Table of Contents
