Panasonic KX-T336 System Reference Manual page 653

C.
1.
.
.
Troubleshooting
If the following troubles should occur during
backup operation, stop the operation and
return to the initial screen.
2. Checksum error detection
If checksum error occurs during loading the
saved data, an error message appears on the
When the communication cable has been
disconnected.
When the remote terminal has lost power.
screen
and loading is terminated.
Then the system is reset and started with
default values automatically.
In above case stop the loading and boot the
system with default values compulsorily.
Error Message List
Error Message
Data error 027
Contents
Backup device is not connected.
(only when maintenance device is
attendant console)
Countermeasures
Connect the backup device to SIO
#1 Port.
Data error 029
Different version' at the time of
backup.
Match the backup version.
Data error 030
Data error 031
A checksum error has been
detected.
Incorrect data has been received.
Communication line is defective or
backup data is destroyed.
Communication line is defective or
backup data is destroyed.
l
Version=System Data Version
The system firmware (ROM) needs to be changed only in case of a software update '.
involving an alteration in the data format of the system area. The backup function does not
allow compatibilii between different system data versions. Data saved using the old
version of the firmware can be used as is even if the firmware is updated, as long as the
system programming data (RAM) is not changed.
17-c- 1