Paradyne 8820, Руководство по установке

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2. Installation
2-10
November 2004 8820-A2-GN20-80
Installing the Air Filter
The BAC is shipped with an air filter. The air filter prevents dust from entering the
chassis. If this air filter is not already installed in the chassis, use the installation
procedure below. Once it is installed, you should inspect and replace the air filter
at least once a year. A harsh environment will require more frequent filter changes.
To purchase a replacement air filter, contact your sales representative.
Procedure
To install the air filter:
1. Unfasten the screws on the vent cover and remove it.
2. The air filter mounts at an angle within the chassis. Slide the air filter upwards
into the air filter guides located on the inside of each side wall. Slide the filter
upwards until it seats against the foam strip located on the backplane.
NOTE:
When oriented properly, the vertical arrows on the front and rear edges of
the filter point up.
3. Replace the vent cover plate, ensuring that the plate’s foam strip presses
against the front of the filter.
4. Replace the screws.
ALARMS
Major Minor Fan B
A
POWER
48V R
TN
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED A
T THE SOURCE BEFORE REMOVING OR INSTALLING THIS PWR ENTR
Y MODULE
48V R
TN
48V NEG
POWER ENTRY MODULE
LEFT UNIT: LINE A
RIGHT UNIT: LINE B
WARNING! POWER MUST BE DISCONNECTED A
T THE SOURCE BEFORE REMOVING OR INSTALLING THIS PWR ENTR
Y MODULE
DSL
SYSTEM
OK
Alm
Test
ETHERNET
TX
RX
Coll
DSL PORT
1
2
3
4
MCP
SYSTEM
OK
Alm
Test
ETHERNET
TX
RX
Coll
04-17547
Vent Cover
Air Filter
SCP
SERIAL
CLOCK
A
ALARM
OUT
CLOCK
B
MCP
SERIAL
ALARM
IN
HUB-2
LAN
MCP
LAN
TAP
OUT
SCP
LAN
HUB-1
LAN
TAP
IN