Samsung SGH-F480 Servise Manual page 47
Gsm telephone
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Also See for SGH-F480:
- User manual (82 pages) ,
- User manual (64 pages) ,
- Quick start manual (7 pages)
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9-2-8. UMTS 2100 Transmitter
**If you check the tx chain,
Check not only RF Devices but also resistors, inductors and capacitors.
Tx ON
RF output : 10700 CH
OUT PWR : 23dBm
Check F200
pin#1 ≥ -5dBm
YES
Check C207
≥ -5dBm ?
YES
Check L201
≥ 20dBm ?
YES
Check F201
pin #2 ≥ 20dBm ?
YES
Check L200
≥ 20dBm ?
YES
Check C105
≥ 20dBm ?
YES
Check RFS100
pin #2≥ 20dBm ?
YES
Check UCP300
YES
THE END
NO
NO
NO
NO
NO
NO
NO
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Resolder or change U200
Resolder or change F200
Resolder or change PAM200
Resolder or change F201
Resolder or Change DUP200
Resolder or Change PAM100
Resolder or Change RFS100
9-37
Flow Chart of Troubleshooting
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