H3C Technologies H3C S9800 Series Switches - Manual (Page 12)

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Figure 3 Installing a fan tray
NOTE:
•
If you insert the fan tray with the upside down, you cannot
completely insert it into the slot. If this happens, pull the fan tray
out and then insert it again with the upside up.
• If the captive screws cannot be attached tightly, check for the
installation of the fan tray.
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