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8.8.1 Common Software Upgrade Problems and Solutions 
Common Problem  Cause  Solution 
During the upgrade, the 
buzzer on the CPU board 
beeps and the upgrade cannot 
be finished. 
A power failure or upgrade 
exception occurs, which 
damages the BIOS program 
of the CPU board. 
Send the CPU board back to the 
factory for repair. 
The upgrade screen is 
displayed but the upgrade 
cannot be finished 
successfully. 
The BIOS version and system 
software version are 
incompatible, or the network 
connection is unstable. 
1. Check the software version 
compatibility and choose a 
proper version for upgrade. 
Refer to the table listing the 
compatibility information 
between the system software, 
BIOS and upgrade tool. 
2. Check the network connection 
between the PC and the hub and 
between the PC and the 
anaesthesia machine. Ensure that 
the network cables do not 
loosen. 
The system cannot switch to 
the upgrade boot screen. 
The network connection is 
not normal. 
1. Check the network connection 
between the laptop, hub and 
anaesthesia machine. Ensure that 
the network cables are 
connected reliably. 
2. Ensure that power is turned on 
for the hub. 
After the system software or 
XX module software is 
upgraded, the system reports 
the XX Comm Stop alarm. 
The system software version 
and XX module software 
version are incompatible, or 
the module is damaged.   
Check the XX module software 
version and module code. If the 
information is correct, send the 
module back to the factory for 
repair.