Acer HARLEY TAB A3-A20 Service Manual page 66

11. SD card identication failure
Fail to identify SD card
Check if SD card is installed
Check if SD card is
Check if SD card jack is
61
YES
YES
correctly.
NO
NO
damaged.
NO
damaged.
NO
Replace MB
OK
YES
Adjust its location
YES
Replace the SD card
YES
Replace the SD card jack
connector
YES
Repair the MB referring to the
troubleshooting guide for L3 repair