Samsung SGH-D520 Service Manual

Also see for SGH-D520: User guide User guide Quick start guide

Samsung SGH-D520 Service Manual Manual pdf 41 page image

SAMSUNG Proprietary-Contents may change without noticeFlow Chart of Troubleshooting9-8This Document can not be used without Samsung's authorization9-1-5. Speaker Part_1(MP3, SPEAKER PHONE)There is no sound from the SpeakerAre there any signals atthe terminal of Speaker?YesReplace the SpeakerNoAre there any signals atthe R321, R322YesYesCheck U303What is the type ofsound from theSpeakerIs there anysignals at theC432, C433?Is there anysignals at theC436, C437?MP3 SPEAKER PHONECheckUCD302 Check U100NoNoCheck U401ENDYes YesThe pin #2 ofU401 is"High"?Is there anysignals at theC434, C435?CheckUCD301YesMELODYAre there any signals atthe L300, L301The pin#10 ofU401 is "High"? Check UCP200NoNoNoNoCheck UCP200YesYesCheck U401