Removing And Installing A Fan Tray - 3Com S7906E Getting Started Manual

4) Tighten the captive screws to fix the card.
Put away the removed blank panel for future use.
When installing or removing a card, keep the card parallel to the slot to prevent the card from scratching
other parts in the chassis.

Removing and Installing a Fan Tray

Do not touch any naked wire, terminal or any part of the product labeled with a dangerous voltage to
avoid injury.
If you want to replace the fan tray of an in-service switch, separate the fan tray from the backplane to
disconnect the power and wait for the fan stops rotating before pulling it out completely. Considering
that the fan may be still rotating, avoid stretching your hands into the fan tray.
The fan tray handle of the S7906E-V is slightly different from those of the S7902E, S7903E-S, S7903E,
S7906E, and S7910E. The fan tray handles of S7902E, S7903E-S, S7903E, S7906E, and S7910E are
fixed, while that of the S7906E-V is hidden in the groove of the fan tray. Therefore, you need to rotate
the handle out of the groove before removing the fan tray from the S7906E-V or installing a fan tray on
the S7906E-V.
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