3. TROUBLE SHOOTING
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3.16 Power ON Troubleshooting
The main power source of LGD690 is provided by 1 chip which isMT6323. Since MT6582 only powers up normally when
MSM6582 is properly powered therefore, MT6323is the actual one to take look at.
Power ON sequence of LGD690is,
PWR key press ->VPROC High->VSYS High -> VIO18 High -> VA28 High -> VM High ->VUSB High->VMC High
-> VTCXO High ->RESETB High.
MT6323 Power on sequence