SMART Embedded Computing 6806800V18A, Installation And Use Manual

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FRU Installation
AXP1440-C07 Installation and Use (6806800V18A) 133
5. To remove the cover, press the upper wall of the terminal block wall downward and slip
a flat-bladed screwdriver between the cover and the terminal block wall. Pry the cover
tab up to relieve it from the embossment in the terminal block wall.
Once the upper cover tab is free from the terminal block embossment, the cover
should rotate downward and free itself from the lower embossment.
6. Install the DC power cables to the dual lug bolts on the PEM.
7. Locate the target power input cable’s terminals at the branch circuit or power
distribution unit. Close the external circuit breakers that provide DC feed power to the
PEM you are replacing.
8. Confirm whether the power to the PEM lug bolts is correct. Using a multimeter,
measure between the two lugs. Make sure that the voltage is of the correct polarity.
9. Close the breakers on the PEM. Make sure that the IS LED turns green.
6.6 Fan Tray Module Installation and Removal
The next sections include procedures for both the upper and lower fan tray modules.
When a fan tray is taken out of operation, the system manager compensates for the loss
by increasing the speed of the remaining fans as needed.
When replacing the upper fan tray module, the system must be powered down. Make sure
the replacement fan tray module is available for exchange and ready to install.
6.6.1 Reposition the Alarm Display Panel
The Alarm Display Panel (ADP1440-D) is a stationary, passive board that contains
SEEPROMS which store a redundant copy of the Shelf FRU data. An ADP is not field
replaceable. For more information on the ADP, refer to Sections
2.6.3 on page 69
and
7.3.4
on page 143
.
Fans may continue to rotate after power is removed. Keep fingers away from the
bottom of the enclosure.
The ADP1440-D module must be repositioned before removing the upper fan tray.
Put on an ESD wrist strap.
Connect the strap to the shelf by attaching the front or rear ESD jack.