Samsung SGH D900i - Ultra Edition 12.9 Cell Phone 60 MB Service Manual page 40

9-2. Initial
U200 pin C11 (RSTON) ="H"?
U200 pin F1(RSTEXTn)
Check the 16bit data signal
Initial Failure
Yes
Yes
="H"?
OK?
Yes
& memory CE
Yes
END
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No
Check the circuit related to reset
No
9-3
Flow Chart of Troubleshooting
change U200