Service manual

2. TROUBLESHOOTING
2.4 Service Manual CNS-9701
Network
Trouble Possible Cause/Criteria Action
Data is deleted when the central
monitor power is turned off.
The system crashes when trying
to review the past data.
The system crashes periodically
such as once a day.
Faulty hard disk Contact your Nihon Kohden distributor or
representative. The central monitor may
lose its function as a monitor.
Clock errorIncorrect date and time
If the clock becomes incorrect after
adjusting the clock and turning the
central monitor power on again,
the back up battery is weak.
Contact your Nihon Kohden distributor or
representative.
• Slow operation
• It takes time to read out the
saved data.
• Malfunction
Windows is unstable. Shut down the central monitor system
program and restart it. For a stable
operation, restart the central monitor
system program once every three months.
Trouble Possible Cause/Criteria Action
The bedside monitor or multiple
patient receiver for that bed is
turned off.
Turn on the bedside monitor or multiple
patient receiver.
A desired bed is not displayed in
the selected group.
The desired bed belongs to another
group.
On the Monitor Setting window, check
other groups to find the desired bed.
Check group names of each bedside
monitor and multiple patient receiver.
Cannot find 8000 series beds in
the network
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8000 series beds connected to the network
via the CNS-9301/9302 central monitor
belong to the same group as the CNS-
9301/9302 central monitor.
The network cable is loose at the
socket.
Check that the network cable and its
connectors at both ends have no damage
and check the continuity. After these
checks, firmly connect the cable between
the main unit and hub.
The network circuit on the
motherboard has a failure.
Replace the motherboard with a new one.
The lamp near the NETWORK
socket on the main unit does not
light and the main unit cannot
communicate with any
instrument connected to the
network.
The hub connected to the main unit
through the network cable has a
failure.
Replace the hub with a new one.