A.Gatherinformationfromthecustomer.
B.Isolatetheproblemonthedevice.
C.Readtheservicedocumentationforpossiblecauses.
D.Checkthepartslifecounters.
参考答案:A
A.Gatherinformationfromthecustomer.
B.Isolatetheproblemonthedevice.
C.Readtheservicedocumentationforpossiblecauses.
D.Checkthepartslifecounters.
参考答案:A