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SAMSUNG Proprietary-Contents may change without notice
6-1
6. Troubleshooting
6-1 Logic Section
6-1-1 No Power
Check the signal from the battery
terminal to Q203 pin 4.
Check U210 and its neighboring
circuits.
Check U210 and its neighboring
circuits.
Check U206 and its neighboring
circuits.
Press button
U208 pin 1=3.6V?
U210 pin 1 input
=3.6V?
U210 pin 5 output
=3.0V?
U206 pin 5 output
=3.0V?
END
Yes
Yes
Yes
Yes
No
No
No
No
END/
Summary of Contents for SCH 620
Page 75: ...9 Block Diagrams SAMSUNG Proprietary Contents may change without notice 9 1 9 1 Main Diagram ...
Page 77: ...SAMSUNG Proprietary Contents may change without notice 9 3 MEMO MEMO ...
Page 79: ...PCB diagrams Samsung Electronics 10 2 10 2 Main PCB Bottom Diagram ...
Page 80: ...PCB diagrams Samsung Electronics 10 3 10 3 CLC PCB Top Diagram 10 4 CLC PCB Bottom Diagram ...
Page 81: ...PCB diagrams Samsung Electronics 10 4 10 5 Hands free Kit PCB Top Diagram ...
Page 84: ...Samsung Electronics 11 3 Circuit diagrams 11 3 CLC Circuit Diagram ...
Page 85: ... Samsung Electronics Co Ltd APRIL 2000 Printed in Korea Code No GH68 00669A BASIC ELECTRONICS ...