Lenovo S660 Service Manual page 19

BB-7 Touch Panel no function (無法觸屏) (1/2)
•
1. Check if TP connector is loosen (確認TP Connector 是否鬆脫?)
•
2. Replace TP (更換TP)
•
If failure still exists after TP replacement (若更換後良品後，現象還存在)
• 3. Check if J2001 is on failure (確認J2001是否有異狀[鍚短 or 空焊]? )
• 4. Check TB voltage(VDD28_PMU and VDD1V8_PMU) is correct (確認TB 電壓
(VDD28_PMU及VDD1V8_PMU)位準是否正確?)
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5. Check control signal of I2C, Reset, INT are correct (確認控制訊號 I2C, Reset,
INT動作是否正常?)
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