BITMAIN AntMiner S21 Pro - Page 17

S21 Pro User Guide
14
J8:4
Chain4
EEPROM data
error
Redo the factory test for chain4
J:6
Temperature
sensor error
Check if the hashboard connection is normal,
update the firmware to the latest version,
replace the hashboard, or return to factory for
repair
J1:5
Chain1 PIC
error
Check if chain1 connection is normal, update
the firmware to the latest version, replace the
hashboard, or return to factory for repair
J2:5
Chain2 PIC
error
Check if chain2 connection is normal, update
the firmware to the latest version, replace the
hashboard, or return to factory for repair
J4:5
Chain3 PIC
error
Check if chain3 connection is normal, update
the firmware to the latest version, replace the
hashboard, or return to factory for repair
J8:5
Chain4 PIC
error
Check if chain4 connection is normal, update
the firmware to the latest version, replace the
hashboard, or return to factory for repair
M:1
Memory
allocation
error
Update the firmware to the latest version,
replace the control board, or return to factory
for repair
J1:2
The number of
chain1 chips is
less than the
design
Check if chain1 connection is normal, update
the firmware to the latest version, replace the
hashboard, or return to factory for repair
J2:2
The number of
chain2 chips is
less than the
design
Check if chain2 connection is normal, update
the firmware to the latest version, replace the
hashboard, or return to factory for repair
J4:2
The number of
chain3 chips is
less than the
design
Check if chain3 connection is normal, update
the firmware to the latest version, replace the
hashboard, or return to factory for repair