PG-1210 Service Manual6.3 SIM card part6.3.1 SIM error1. Check to see if J104.1 pin is around 2.85V : CP126NO Æ Check to see C117 pin cold solder, broken, short to the other PCB pattern or not :If you find out any defect, you replace it2.Check to see J103.2, 3, 6(R116,R117,R118) for wave form : CP127NO Æ Check to see J104, R116 cold solder, broken, short to the other PCB patternor notIf you find out any defect, you replace itCP127CP126CP126CP12734PANTECH