GTC ■ Service ManualASUS Proprietary3華華碩碩電電腦腦6.3 BT/WIFI .................................................................................................... 267. RF PCB LOCATION ................................................................................... 277.1 GSM.......................................................................................................... 287.3 BT / WIFI................................................................................................... 298. GSM TROUBLE SHOOTING.................................................................... 308.1 METHODS FOR DEBUGGING ........................................................................ 308.2 AFC FAIL .................................................................................................. 338.3 APC FAIL (TX).......................................................................................... 348.4 AGC FAIL (RX)......................................................................................... 359. GPS TROUBLE SHOOTING..................................................................... 36