Trouble Shooting Guide, Electrical
3.2 Calibrate 1800
Routine Repair Action
GSM1800_Calibrate_RXVCO: 1) N1200
2) B1300, V1300, C1311, C1314
3) N1202
GSM1800_Calibrate_TXVCO: 1) N1200
2) B1300, V1300, C1311, C1314
3) N1202
GSM900_Loop_BW_Calibration: 1) N1200
2) B1300, V1300, C1311, C1314
3) N1202
GSM1800_PA_Isolation: 1) N1200
2) B1300, V1300, C1311, C1314
GSM1800_Check_Output_Power: 1) N1400
2) N1200
3) N2600
4) W1410
GSM1800_Measure_Multiframe_XXX:
(XXX can be : High or Low)
1) N2600
GSM1800_Calc_XXXX_Power_DAC:
(XXXX can be: Full, Low Up, High
Up, High Down or Low Down)
1) No repair action
GSM1800_Calibrate_RSSI 1) N1200
2) B1300, V1300, C1311, C1314
3) N1202
3.3 Calibrate 1900
Routine Repair Action
GSM1900_Calibrate_RXVCO: 1) N1200
2) B1300, V1300, C1311, C1314
3) N1202
GSM1900_Calibrate_TXVCO: 1) N1200
2) B1300, V1300, C1311, C1314
3) N1202
4/00021-2/FEA 209 544/86 C
Sony Ericsson Mobile Communications AB
5(7)