The cover is not shut all the way or the magnet is not making the connection between the cover and the chassis. A1 is a microcode checksum error. don't know what that means.
Error 0F is "top cover open"
1. Make sure there is no foreign material in cover open switch.
Cover open switch securely mounted to bracket.
Cover open switch securely mounted to cable.
Connector J10 tightly plugged into main card.
Cables are not damaged.
2. Replace cover open switch
3. Replace main cable.
4. Replace main card.
Error A1 is "cheksum error for the microcode patch in flash memory"
1. Download microcode into flash memory. Retry failed operation.
2. If problem remains, replace main card.
I just had a untit that had A1 error. Replacing main card pcb helped fix the error.
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