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Figure 71 Replacing a card (for the 12508 and 12518)
A: Card to be removed B: Card to be installed
Replacing a fan tray
CAUTION:
• To avoid injury, do not touch any wires, terminals, and parts with a high-voltage hazard sign.
• Fan trays are hot-swappable. To replace a fan tray with the switch running, pull out the fan tray after i
stops rotating. Keep your hands away from the spinning fan blades when removing the fan tray.
• To ensure normal operation of the switch, do not keep the switch working without a fan tray for a lon
time.
• When removing a fan tray, hold the bottom of the fan tray to pull it out thoroughly.
Preparing for the replacement
1. Put on an ESD-preventive wrist strap, and make sure the wrist strap makes good skin contact and
is well grounded.
2. Unpack the fan tray to be installed.
Replacement procedure
To replace a fan tray:
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