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5. Flow Chart of Troubleshooting and Circuit Diagrams
5-1 Power ON
Flow Chart of Troubleshooting and Circuit Diagrams
5-1
'POWER ON'does not work
Charge the Battery
Check the Battery Voltage
is more than 3.2V
No
Yes
Yes
Check the Dome sheet
When the "END" key is
pressed, the voltage of "D304 pin1"
3.6V?
No
Yes
U474 pin 2,3 > 3.2V
Check the circuit related to U474
No
END
U619 pin 5 2.5 V ?
Check the circuit related to U619
No
Yes
Check the initial operation
U620 pin 5 3.0 V ?
Check U620 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
Содержание SGH-R210E
Страница 2: ...Samsung Electronics Co Ltd Printed in Korea 05 2002 Rev 1 0 GH68 02809A ELECTRONICS ...
Страница 11: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...
Страница 12: ...PCB Diagrams 2 2 2 2 Main Bottom ...
Страница 37: ...5 12 Flow Chart of Troubleshooting and Circuit Diagrams U400 SPK300 U618 PWO1P PWO1N SPK SPK 6 2 3 SPK SPK ...
Страница 44: ...Flow Chart of Troubleshooting and Circuit Diagrams 5 19 Q403 U467 R575 R579 KeyPAD LED CON1 LCD LED GPO1 ...