Samsung SGH-F300 service manual free download

File name Samsung SGH-F300 service manual.pdf

3. Flow Chart of Troubleshooting 3-1.Baseband 3-1-1. Power ON 'Power ON' Does not work Check the current consumption Current consumption NO Down load again 100mA ? YES Check the battery voltage NO Voltage 3.3V ? Charge the Battery YES Check the pins of U838 NO C215 1.8V ? Check U838 and C215 YES NO C217 and C218 = 2.8V? YES NO C219=1.5V? Check U838 and C219 YES Check the clock signal NO Check the clock generation circuit at pin #3 of TCX100 Freq.=26MHz,Vrms 300mV TCX100 YES Check the Initial operation END 3-1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization Flow Chart of Troubleshooting VCCA_2.8V VCCD_2.8V VRF_2.8V HPEIO_1.8V VBAT C202 C200 C201 C203 EAR_ADC DSP_DB(0:15) C209