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Flow Chart of Troubleshooting
10-
25
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10-2-3. PCS Rx
Continuous RX ON
RF Input : 62CH
AMP : -50dBm
Check pin #8 of
PAM100
≥
-65dBm
Check pin #36,37 of
U200
≥
-65dBm
Check VDDA pins of
U200
≒
2.65V
Check the pin #7 of
U200- = 19.2Mhz
Check the pin #10,11,12,13 of
U200 Vp-p=160mV
END
Resolder or Change
RFS100, L100,C100
Resolder or Change
PAM100
Check soldered status of
L104,L105,L106
Resolder or change PMIC pin 27,
R401
Resolder or Change TCX200
Resolder or Change U200
Normal Condition Catch the
channel
Check pin #4 of
PAM100
≥
-65dBm
GSM Receiver is O.K?
GSM RX path component
resolder or change
Check soldered status of
ANT, L114, R101, C101
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
①
②
③
④
⑤
⑥
⑦
Check
PAM
100
pin #1,27,28 : High?
NO
YES
Resolder or change UCP300
Summary of Contents for SGH-G800
Page 48: ...Flow Chart of Troubleshooting 10 2 ...
Page 53: ...Flow Chart of Troubleshooting 10 7 ...
Page 56: ...Flow Chart of Troubleshooting 10 10 ...
Page 60: ...Flow Chart of Troubleshooting 10 14 ...
Page 62: ...Flow Chart of Troubleshooting 10 16 ...
Page 64: ...Flow Chart of Troubleshooting 10 18 ...