SAMSUNG Proprietary-Contents may change without noticeSGH-E600/E608 Flow Chart of Troubleshooting and Circuit Diagrams2-2This Document can not be used without Samsung's authorization2. Initial3. Sim PartCheck the signal at thepin 19 of U100 is"High" when the phoneis boot onCheck the pin 22 ofU100 is "High"Check U100NOCheck the U700NOCheck the soldered status ofOSC800, L800, U100NOYESYESYESInitial FailureCheck the pin 4 ofOSC800 is around 2.8VCheck and resolder LCD connector CN200if there is solder bridhe between the pinsENDYESCheck the SIMconnector's (CN100)connector's to SIM cardCheck the circuit related toU100NOresolder or change CN100NOCheck the related circuit ofCN100NOYESYESYESPhone can't access SIM cardCheck the circuit around U600 outputand voltage supply circuitryENDYESCheck the pin 1 of CN100.Voltage = 3VCheck the circuit around CN100 inputcircuitryCheck the related circuit ofU600 and U100NO