SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
9-41
This Document can not be used without Samsung's authorization
9-2-3. Abnormal WCDMA900 Tx Operation
TX ON
Target
PWR=23dBm
1. Check
FEM Ant
Resolder RFS100,
L103, C101
F100 PIN20
≥
10dBm
YES
Check Antenna
Switch Control
2. Check
FEM In/Out
Check F100
PIN15=H, PIN14=H
PIN13=H, PIN12=L
NO
F100 PIN17
≥
8dBm
NO
YES
Resolder or Change
F100
3. Check
Duplexer Ant
NO
YES
Resolder
C176, L123
DUF101 PIN6
≥
5dBm
YES
4. Check
Coupler Input
NO
Resolder or change
CPL101, R118, R112,
R114, R115
CPL101 PIN1
≥
5dBm
YES
5. Check
PAM Output
NO
Resolder or Change
L137, C107, L138, C187
PAM101 PIN13
≥
-15dBm
YES
6. Check
Transceiver Input
NO
Resolder or Change
PAM101, F103, C179,
C180, C120
RFT100 PIN57
≥
-20dBm
YES
END
Check RFT100,
UCP300
NO
Содержание GT-I8910
Страница 139: ...SAMSUNG CONFIDENTIAL SVC SCHEMATIC ...