Samsung SGH-X140 Service Manual

Also see for SGH-X140: User guide

Contents

SAMSUNG Proprietary-Contents may change without noticeSGH-X140 Flow Chart of Troubleshooting2-4This Document can not be used without Samsung's authorization2-1-2. InitialInitial FailureThe pin #G11 of U101 =1.8V andthe pin #J12 of U101 =2.8V ?Check the U101(if it has some problem, it is to be replaced.)YesNoIs the pin #K9 of U101"Low → High" ?YesNo Check the U101(if it has some problem, it is to be replaced.)There is 32.768kHz waveforms at the C220 andC221YesNoCheck the U201Is the pin #A4 of U101is "High"The voltage is "High" atthe C112,C115,C116 Check the U101Check the U404LCD display is O.KNoNoYesYesYesCheck the LCD partNoSound is O.KYesNoCheck the Audio partENDYes