Allied Telesis AT-8400 Line Card and Power Supply - Manual (Page 2)

Installing the AT-8400 Power Supply Blank Faceplate
You can install an AT-8400 power supply blank faceplate with the chassis
either powered on or powered off.
Caution
Before installing an AT-8400 blank faceplate, refer to the AT-8400
Series Switch Reference Guide for electrical safety information.
To install an AT-8400 power supply blank faceplate, perform the following
procedure:
1. Begin by removing the power supply cover plate, as shown in Figure 4.
Use a Phillips screwdriver and loosen the two captive screws that secure
the power supply cover to the chassis. Remove the cover by angling it
from the bottom as you slide it down and out of the chassis.
Figure 4. Removing the Power Supply Cover Plate
2. Select the power supply slot in the AT-8400 chassis that is unoccupied
by a power supply. Blank faceplates can be installed in either power
supply slot.
Note
Always cover any unoccupied AT-8400 power supply slot with a blank
faceplate. The faceplate ensures proper cooling and ventilation of the
AT-8400 Series switch.
3. Unpack the blank faceplate from the shipping package.
Caution
Observe all standard electrostatic discharge (ESD) precautions, such
as wearing an antistatic wrist strap, to avoid damaging the chassis
device.
4. Verify that the blank faceplate package includes all the items previously
listed in “Package Contents” on page 2. If any item is missing or
damaged, contact your Allied Telesyn sales representative for
assistance.
1
AT-841
1 TX
EJECT
LNK
10 ACT
100
1
AT-841
1 TX
EJECT
LNK
10 ACT
100
RDY RDY
5. Align the edge of the blank faceplate with the top and bottom guide
rails before carefully sliding the faceplate into the slot, as shown in
Figure 5. Slide the faceplate forward into the empty power supply slot
until the faceplate is flush with the adjacent power supply.
Figure 5. Insertion of Power Supply Blank Faceplate
6. Secure the blank faceplate to the chassis by tightening the captive
screw on the faceplate.
Note
Always tighten the installation screw to secure the blank faceplate to
the switch chassis. Leaving a faceplate partially seated can allow dust
to enter the chassis and disrupt cooling and ventilation in the chassis.
7. Slide the power supply cover back into the chassis and secure the cover
by tightening the two captive screws, as shown in Figure 6.
Figure 6. Installing the Power Supply Cover Plate
You have completed the power supply blank faceplate installation
procedure.
AT-PWR1
0 AC
P O W
E
R
F A
U
L
T
1
2
3
AT-8400
Modular Switch System
AT-841 1
PWR
EJECT
LNK
10 ACT
100
AT-841
1 PWR
EJECT
LNK 10 ACT
100
AT-841
1 PWR
EJECT
LNK
10 ACT
100
1
AT-841
1 TX
EJECT
LNK
10 ACT
100
1
AT-841
1 TX
EJECT
LNK
10 ACT
100
RDY
RDY
Reviewing Safety Precautions
Please review the following safety precautions before you install an
AT-8400 line card blank faceplate or an AT-8400 power supply blank
faceplate.
Warning
Electric Shock Hazard: To prevent electric shock, do not remove the
AT-8400 chassis cover. There are no user-serviceable parts inside. The
unit contains hazardous voltages and should only be opened by a
trained and qualified technician.
8
Warning
Lightning Danger: Do not work on this equipment or connecting
cables during periods of lightning activity.
9
Caution
Power cord is used as a disconnection device: To de-energize
equipment, disconnect the power cord.
10
Warning
Electrical-Type Class 1 Equipment: This equipment must be
earthed. The power plug must be connected to a properly wired earth
ground socket outlet. An improperly wired socket outlet could place
hazardous voltages on accessible metal parts.
11
Caution
Pluggable Equipment: The socket outlet should be installed near the
equipment and should be easily accessible.
12
Caution
Air vents: The air vents must not be blocked on the unit and must
have free access to the room ambient air for cooling.
13
Warning
Remove all metal jewelry, such as rings and watches, before installing
or removing a blank faceplate from a powered on chassis.
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