Lenovo S660 Service Manual page 50

RF-3:WCDMA Trouble shooting (1/5)
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WCDMA發射路徑 WCDMA transmission path
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確認IQ路徑
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Check IQ path
– 使用示波器量測 圖所標之腳位,檢視其波形
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Use oscilloscope to check below points, check waveform.
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