Asus P750 Service Manual Page 20

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GTC Service Manual
ASUS Proprietary 20
Figure 9. Camera clock source
6.2.8 Check SIM
The main of the function is verify SIM card, If fail please check the
below the items.
Check the SIM connector Pin soldering status.
I. SIM_VCC_R 1.8/3.3V ( general is 3.3V )
II. SIM_RST 0V ( Read mode )
III. SIM_CLK_R clock (Read mode)
IV. SIM_DAT_R high-low transition (Read mode)
Figure 10. SIM card connector circuit
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