129
KMX-3921
Installation & Service Manual
through the Densité Upgrade Manager (launched from iControl Navigator, or iControl Solo).
See
Replacing Cards
All cards and rear panels can be installed with the frame power on.
Each card has connectors which plug into a mid-frame mother board for distribution of
power and for connection to the controller card, and a second connector which for certain
cards plug directly into the rear panel for mosaic output connections to the display(s).
In install or replace a card or rear panel, see:
• To install the multiviewer in a Densité 3+ FR1 frame, see
Installing Cards in the
Densité 3+ FR1 Frame
in the
Densité 3+ FR1 1RU Housing Frame for Densité Modular
Products User Manual
.
• To install the multiviewer in a Densité 3+ FR4 frame, see
Installing Cards in the
Densité 3+ FR4 Frame
in the
Densité 3+ FR4 Housing Frame User Manual
.
See
Opening and Closing the Front Door
Cooling Fan Replacement
A cooling fan has moving parts that, over time, can wear out. In the final stages of fan wear
out, the fan makes a distinctive sound and it rotates at a slower speed, thereby reducing
airflow which undermines its ability to remove heat from the card. Under this condition, fan
replacement is required.
Also, dust contained in the ambient air can accumulate on the fan and on surfaces around
the fan and heatsink, thereby reducing airflow, and preventing air from coming into direct
contact with the heatsink surfaces which undermines the ability to remove heat from the
card. Under this condition, cleaning is necessary and fan replacement may be required.
Some diagnostic procedures may interrupt normal system operation. Changing a card’s
cooling fan will interrupt normal system operation. Down time can be minimized by
swapping in a new or a known good card to restore system operation quickly. Schedule
these maintenance operations during off hours when the system is not in use.
Diagnostics
The KMX-3921 card’s electronic circuitry generates heat that must be shed by forcing air to
move across heat-generating components. Reduced air flow or high ambient temperature
results in heat build-up within temperature-sensitive components on the card. This can
cause unexpected behavior such as glitches or even a system freeze or shutdown. The
KMX-3921 card self-diagnoses high temperature conditions by raising critical temperature
and fan alarms.
IMPORTANT
The rear panel must be installed before any
KMX-3921
cards are inserted
into the frame.
All
KMX-3921
cards must be removed from the frame before the rear panel
can be removed.
