Huawei OptiX OSN 9800 U32 Enhanced Subrack V100 Quick Installation Manual page 52

Determine the mounting direction of the fan tray assembly and push it into the slot.
NOTE
1. During the installation of a fan tray assembly, if the fan tray assembly is fully inserted, the fan
indication is . Otherwise, the red area
2. One button is located on each side of a fan tray assembly. You must press both the buttons to
remove the fan tray assembly from the slot.
is displayed in the fan indication.
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