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1. Probe the detect pin's status (same as SIM fail)；
2. Probe
SDC2_VDD_CON
(2.95V for few secs and back to 0V)
3. If 2. fails, check the appearance of U2201 to find any cracks, SMT issues, and also
check inside the tray shielding to find any bent or shifted pin. Change U2201 or
repair the parts.
SD_CARD_DET,
Green net is
is
SDC2_VDD_CON.
surrounding components.
824 SDCARD test fail-BMMI
C2208.1. Monitor the voltage when SD card inserted.
yellow net
Check all
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