Lenovo P70-A Service-Handbuch - Seite 17

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Repair Manual of Lenovo P70-A Mobile Phone

4.5.2 Abnormal operation of CTP keyboard

CTP keyboard is invalid

Whether the CTP test is normal?

Replace one CTP to see whether

it is the problem of touch screen

or main board?

It is the problem of CTP connector J1601

or main chip U401 welding

CTP damaged,

replace it

Replace CTP