Radio Part - Samsung SGH E590 - Cell Phone 70 MB Service Manual

9-12. Radio part

Radio does not work
R501, R503, C509
R501, R502, C507, C508
C516, L504, C517, C514
(When U501 operate)
Check U200 signal
related to U501
Yes
≥ 2.8V
Yes
≥ 2.8V
Yes
L503 ≥ 2V
Yes
is OK?
Yes
Yes
END
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No
Resolder R501, R503, C509
and Check PMU part
No
Resolder R501, R502, C507, C508
and check U501
No
Check or Replace U501
No
Resolder C516, L504, C517, C514
9-23
Flow Chart of Troubleshooting