Mandatory
The relays used in the relay output module have ON/OFF life mechanically.
Use them within their mechanical life times is described in this manual.
Replace the module if exceeded.
CAUTION 
Mandatory
In an annual average temperature of 30°C or less, replace the battery every four years; replace it every two years in an average annual temperature higher than 30°C.
An exhausted battery can cause malfunction and lose data and programs stored in S2, resulting in machine damage or accidents, depending on the application.
7. Safety Precautions in Daily Operation
WARNING
Mandatory
Apply power of the specified ratings (voltage fluction range, frequency, output rating, etc.) described in this manual.
Otherwise, it can cause malfunction, machine damage or fire due to overheat.
Mandatory
Turn off power immediately if the ambient temperature or internal temperature exceeds beyond normal range or if failure is occurred in the model 2000.
Contact Toshiba for repairing.
Operation under such situation can cause fire or electrical schock.
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Computer module C2PU7 User’s Manual