Samsung SGH-U600 Service Manual

Also see for SGH-U600: User guide Quick start guide

Flow Chart of Troubleshooting3-253-2-5. GSM850 TransmitterF101pin 6 : 2.8VCONTINUS TX ONCONDITIONMS TX level 19CH : 190RBW : 100KHzVBW : 100KHzSPAN : 10MHzREF LEV. : 10dBmATT. : 20dBUCP300check &change2NO NOYESPAM100 pin73~6dBm?YESF101, C100check & changeNO1PAM100/R105 check & changeYES3PAM100 pin 4 : 3.7VNO BATTERY, BATTERY CONNECTORcheck & change4YESPAM100 pin3: 'LOW' NO 5UCP300 check & changeYES6UCP300check & changePAM100pin 1: 'HIGH'NOYESPAM100pin 6 : 1.2V?NOYESNOPAM101 pin12: -5dBm?YESPAM100change&resolder7U100pin31 :7~11dBm?U100pin17 13MHzVp-p :950mVU100 change orresolderU100pin27,28,29,301.7VU100check &changeC112change or resolderOSC100pin 3 : 13MHzVp-p : 950mVOSC100change or resolderU100change orresolderNONONO YESYESYES NOYESNO8UCP300change9 1011F101 pin 8about2~5dBm?