User's Manual

Replacing an RHU/AO Module I P/N 709C011101 I Page 34
4 Maintenance
This section provides maintenance information on the following:
• Replacing existing RHU/AO modules currently in QX chassis
• Replacing the QX chassis fan modules (in case of faulty fans)
4.1 Replacing an RHU/AO Module
This section describes how to replace an existing RHU and/or RHU/AO module. The RHU and AO
modules are easily removed from/added to the QX chassis, while the procedure does not
require powering off the unit (hot-swap).
To Replace an RHU/AO Module
1. Open the QX door, by unscrewing the two screws.
QX Front Door Screws Figure 4-1