Cisco CableCARD, Staging Manual

Page: 61 / 184

Ventilation and Handling
734375 Rev H 51
Ventilation and Handling
DHCTs can overheat if not ventilated properly. Make sure that each DHCT receives
proper ventilation. Do not stack more than four DHCTs on top of each other in the
same rack. If the DHCTs contain DVRs, do not stack more than two DHCTs on top
of each other in the same rack.
CAUTION:
Avoid damage to the hard disk drive! The DVR contains an internal hard disk
drive. You should take extra care to handle this unit gently. Do not move the
unit while it is connected to a power source.
After staging the DVR, wait 15 seconds after power is removed before
handling the DVR and removing it from the staging rack.
Do not stand the DVR on its front faceplate while connecting cables to the
back panel. Pressing down on the rear panel does not distribute all of the
weight across the Explorer frame; rather it localizes the pressure onto the
navigation buttons. The force can damage the underlying button supports,
which renders the buttons unusable.