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Flow Chart of Troubleshooting
9-44
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9-2-5. Abnormal DCS/PCS Tx Operation
PIN28
PIN27
PIN1
U202 PIN8
≥ 0dBm
U202 PIN21
≥ -15dBm
Resolder RFS200,
L203,C236,L219
U201 PIN56
≥ -15dBm
Check U202
PIN28=H, PIN27=H
PIN1=L
Resolder or Change
C212, R209, R212,
R213
Check Antenna
Switch Control
Resolder or Change
U202
YES
YES
YES
YES
NO
NO
NO
TX ON(0 level)
Check U201,
UCP400
END
Содержание SGH-i560V
Страница 41: ...7 Block Diagrams 7 1 7 1 Main Block Diagram ...
Страница 42: ...Block Diagrams 7 2 7 2 RF Solution Block Diagram ...
Страница 43: ...8 PCB Diagrams 8 1 Main top view ...
Страница 44: ...PCB Diagrams 8 2 Main bottom view ...