NEC IP8800/S2400 Series Troubleshooting Manual page 23

■ Do not power off the device during software update (when the ppupdate command
is being executed).
• By the execution of the ppupdate command, the device automatically restarts. Do not power off the device
during restart (until the STATUS LED on the basic control unit changes from blinking in green into steady
light). The device may be damaged.
■ Handle a memory card with care.
• Do not forcedly push or flip a memory card to insert. Do not forcedly pull out a locked memory card to
remove. Otherwise, the connector of the memory card slot may be damaged.
• Remove the memory card to reposition the device. Moving the device may cause force against the memory
card, which can damage the connector of the memory card slot.
■ Do not remove the memory card or disconnect power while the ACC LED is lit.
• Lighting of the ACC LED on the basic control unit indicates that the memory card is being accessed. Do
not remove the memory card or disconnect power during access. The memory card may be damaged.
Some commands require a considerable time before completing access to the memory card after the entry
of the commands. Ensure that access is completed and then remove the memory card or disconnect
power.
■ Do not attach a label or the like to the transceivers.
• The transceiver has a label indicating its manufacturer and that it is our standard supply. However, this label
is attached to the part that does not obstruct heat radiation from the transceiver or the mechanism
preventing slip-off from the cage. If a label or the like is attached to such an obstructing part, the transceiver
or the network interface module may be damaged.
■ For the power supply equipment, considerations must be given not to cause voltage
drop due to rush current.
• When this device is powered on, a rush current flows. Considerations must be given not to cause voltage
drop due to such a rush current. The voltage drop affects not only this device but other devices connected
to the same power supply equipment.
■ When installing/uninstalling the power cable, turn off the power switch.
• To install or uninstall the power cable, turn off the switch on the power supply to be installed or uninstalled.
■ When replacing the fan unit while the device powered on, complete the task within
the specified duration of time.
• When replacing the fan unit while the device powered on, complete the entire task from removal to
installation within one minute. If it takes more than one minute, other modules may be affected by
temperature rise in the device.
CAUTION
Safety Guide [IP8800/S6700]
xiii