Lenovo S660 Service Manual page 15

BB-4 SIM Card Identification error (SIM卡無法識別) (2/2)
SIM1/SIM2的供电电
压各来自PMU的两
组LDO output
SIM1/SIM2 output
voltage are coming
from two LDO
output of PMU
SIM1和SIM2的
DATA/RST/CLOCK
单独分开使用
DATA/RST/CLOCK
of SIM1 and SIM2
are used
seperately
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