Samsung SGH-B300 Service Manual

Also see for SGH-B300: User guide User guide User guide

Contents

SAMSUNG Proprietary-Contents may change without noticeFlow Chart of Troubleshooting10-3This Document can not be used without Samsung's authorization10-1-2. System InitialInitial FailureThe pin #G11 of U300 =1.8V andthe pin #J12 of U300 =2.8V ?Check the U300(if it has some problem, it is to be replaced.)YesNoIs the pin #K9 of U300"Low → High" ?YesNo Check the U300(if it has some problem, it is to be replaced.)There is 32.768kHz waveforms at the C216 andC217YesNo Check the UCP200The voltage is "High" atthe C313,C314,C310Check the U300LCD display is O.KNoYesYesCheck the LCD partNoSound is O.KYesNo Check the Audio partENDYes