AT-4016F Installation Manual
17
Installing the Redundant Power Supplies
The AT-4016F has a redundant, dual power-supply. See Table 3 in
Chapter 1 for the list of AT-4016F models. Power supply modules are
keyed so that they will only fit in the appropriate switch housing.
The following procedure details how to replace an AT-4016F power supply.
Replacing a power supply
Caution
When inserting or removing power supplies using the hot swapping
method, the power cord should remain plugged in.
1.
An illuminated PS Fail 1 or PS Fail 2 LED indicates a failure in a
power supply. (PS Fail LEDs are located at the lower right corner of the
AT-4016F front panel; see Chapter 3 for details.)
2.
Leaving the AC power cord attached, loosen the two screws that secure
the power supply you want to replace (see Figure 13).
Attention
Loose metal parts can cause damage to exposed circuit boards and
components. Handle parts and any required tools with care during
installation.
3.
Carefully slide the power supply module out from the switch housing.
4.
Insert the replacement power supply until the faceplate of the module
is flush with the switch housing.
5.
Tighten the two screws to secure the power module.
6.
Ensure that the power LEDs are illuminated.
Figure 13: AT-4016F Power
Supply
Replacement
AC
POWER SUPPL
Y 2
POWER SUPPL
Y
LOOP
INTERNAL
FAIL
FIBER SC DUPLEX
OC-3c
TIMING
SYNC
LOS
ATM MEDIA INTERF
ACE
POWER SUPPL
Y 1
POWER SUPPL
Y
