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Chapter 4 Maintenance
Computer module C2PU37 User’s Manual
32
4.2 Periodic Maintenance
Check the following items periodically (once every six month is recommended). Also
check these items when the surrounding condition or environment is changed.
Item Inspection Description Action
Power supply voltage
(measure at the power supply
terminal of the module)
AC85 - 132VAC/170 -
264VAC
Check for loose power supply
terminal screws
Must be secure
Power supply related
Check for damaged cables Must not be damaged
Check that the base unit is
securely in place
Must not be loose
Check that each module is
securely in place
Must not be loose
Installation
Check for loose connector in
front of the module and
damaged cables
Must not be loose or
damaged
Measure voltage of each I/O
terminal
Must be within specification
Check the input status LED Must turn ON normally
Check the output status LED Must turn ON normally
Check that the I/O terminal is
secure
Must not be loose
Check that the terminal
screws are secure and not
touching each other
Must not be loose or touching
each other
I/O module related
Check for damaged cables Must not be damaged
Environment Check the temperature,
humidity, vibration, and dust
Must be within installation
environment specification
C2 built-in Litium battery Should be replaced after 10
years by C2 overhaul
PS694 battery Should be replaced
after 3 years (Ni-Cd battery)
after 1 year (Ni-MH battery)
Other battery Should be replaced after two
years
Battery related
Check that the battery
connector is connected
securely
Must be secure
WARNING
• Do not attempt to disassemble, modify, or repair.
This can cause electrocution, fire, or injury.
Contact the Toshiba service desk for repair.