Samsung SGH D900i Service Manual - Page 66

Radio part

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9-19. Radio part Radio does not work Yes R406, R413, C423 ≥ 2.8V Yes R405, R409,C420, C421 ≥ 2.8V Yes L400 ≥ 2V Yes C428, L401, C429, C431 is OK? Yes Check U200 Yes END Flow Chart of Troubleshooting No Resolder R406, R413, C423 and Check PMU part No Resolder R405, R409,C420, C421 and check U501 No check or Replace U403 No Resolder C428, L401, C429, C431 9-29 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization

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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-29
9-19. Radio part
R406, R413, C423
≥ 2.8V
Radio does not work
R405, R409,C420, C421
≥ 2.8V
Resolder R405, R409,C420, C421
and check U501
No
Yes
No
Resolder R406, R413, C423
and Check PMU part
Yes
L400 ≥ 2V
check or Replace U403
No
Yes
END
Yes
C428, L401, C429, C431
is OK?
Resolder C428, L401, C429, C431
No
Yes
Check U200
Yes