Samsung SGH E250 Service Manual - Page 63

Bluetooth part

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Flow Chart of Troubleshooting 9-18. Bluetooth part Bluetooth does not work Yes F404 pin 2 ≥ -4dB Yes C319, C318 (+position), is ≥ 1.8V Yes OSC1001 Pin 3 is 26MHz (1.4Vp_p) Yes C321,C316,C317 is ≥ 1.5V Yes R304, U1126, U1125 ≥ 1.8V C323 ≥ 1.7V(32kHz) Yes Check UCP201 Yes END No Resolder or replace L301,L301, ANT900 No Resolder C318,C319 and check the PMU part No Resolder OSC1001, C325,C326,R312 No Resolder C316, C317,L303,C321 check or Replace U1109 No Resolder R304, U1126, U1125, C323 check or Replace U1109 9-28 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
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-28
9-18. Bluetooth part
F404 pin 2 ≥
-4dB
Bluetooth does not work
C319, C318 (+position),
is ≥ 1.8V
Resolder C318,C319 and
check the PMU part
No
Yes
No
Resolder or replace
L301,L301, ANT900
Yes
OSC1001 Pin 3 is
26MHz (1.4Vp_p)
Resolder OSC1001,
C325,C326,R312
No
Yes
No
END
R304, U1126, U1125 ≥
1.8V
C323 ≥ 1.7V(32kHz)
Resolder R304, U1126,
U1125, C323
check or Replace U1109
Yes
Yes
C321,C316,C317 is
≥ 1.5V
Resolder C316, C317,L303,C321
check or Replace U1109
No
Yes
Check UCP201
Yes