Samsung SGH-D830 Service Manual

Also see for SGH-D830: User guide User guide

SAMSUNG Proprietary-Contents may change without noticeFlow Chart of TroubleshootingThis Document can not be used without Samsung's authorization9-189-2.RF9-2-1. EGSM RXContinuous RX ONRF Input : 62 CHAMP : -50dBmNORMAL CONDITIONCatch the channel ?YESNOU100 CheckPin #6 ≥ -65dBm ?U100 CheckPin #12,13 ≥ -65dBm ?U101 CheckPin#6, 7 ≥ -65dBm ?RFS100, C100, L101Resolder or ChangeU100 Resolder or ChangeU101 CheckPin#1,13,22,32≥ 3.1V?U101 CheckR117 : 13MHzBTC500 PIN 3, C526Check or resolderENDYESYESYESU101 CheckPin 35,36,37,38:Vp-p 100mVYESCheck soldered status ofL106, L107, C109YESYESR117Check or resolderTCX100 CHECKpin 4 : 2.9VPIN 3 : 13MHzV p-p : 800mVNONONONONO NOTCX100changeNOGSM Receiver is ok?YESU101Resolder or ChangeNOGSM RX path componentresolder or changeNOCheck soldered status ofC100, C101, L102, C102