Samsung SGH-D600 Service Manual page 24

Flow Chart of Troubleshooting
7-2. Initial
Is U400 RSTON is HIGH?
Is U200 R211 , R212 OK ?
Check the 16bit data signal & memory CE
Initial Failure
Y e s
Y e s
Y e s
Y e s
END
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No
Check the circuit related to reset
No
7- 4
Check the U200