5. Flow chart of trouble shooting
5-1 Power ON
5-1
Flow chart of trouble shooting
'POWER ON' does not work
Charge the Battery
Check the Battery Voltage
is more than 3.2V
No
Yes
Yes
Check U303 and the path from +VBATT
to BAT300
The node
between D303 and BAT300 = 3V ?
No
Yes
U410 pin 1,4,10 > 3.2V
Check the circuit related to U410
No
END
U306,U308 pin 3 = "H"?
Check the circuit related to U306, U308
No
Yes
Check the initial operation
U306, U308 pin5 = 3V ?
Check U306, U308 and related circuit
No
Yes
Check for the clock signal at R107
Check the clock generation circuit
(related to U100 and Q100)
No
Yes
Yes
Summary of Contents for SGH-N100
Page 11: ...Exploded Views and Parts List 1 9 1 11 Desk Top Charger DESK TOP CHARGER GH44 00163A ...
Page 12: ...PCB Diagrams 2 PCB Diagrams 2 1 Main Top ...
Page 13: ...2 1 ...
Page 14: ...PCB Diagrams 2 1 Main Bottom ...
Page 15: ...2 2 ...