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Flow chart of Troubleshooting and Circuit Diagram
5-16
5-9 Ring Indicator
Ring Indicator LED
does not work
Check the circuit related to U100
U100 pin 5 = 3.3 V ?
Is Green color LED of 3LEDs
correctly work ?
Check Q4, R14, LED6
END
Check Q3, R12, LED6
Yes
No
Yes
Yes
No
No
No
Check Q2, R13, LED6
Yes
Is Red color LED of 3LEDs
correctly work ?
Is Blue color LED of 3LEDs
correctly work ?
Summary of Contents for SGH-A800
Page 2: ...Samsung Electronics Co Ltd Printed in Korea 11 2002 Rev 1 0 GH68 03108A ELECTRONICS ...
Page 12: ...1 10 Exploded Views and Parts List 1 10 Battery Charger BATTERY CHARGER GH44 00279A ...
Page 25: ...4 1 Block Diagrams 4 Block Diagrams 4 1 Main Base Band ...
Page 26: ...Block Diagrams 4 2 4 2 Main RF ...