2. Installation
2-10
March 2001
8820-A2-GN20-30
Installing the Air Filter
The GranDSLAM chassis 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/or
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
SERIAL
SMCM
CLOCK
A
ALARM
2
4
6
8
10
12
14
16
18
1
3
5
7
9
11
13
15
17
LAN/WAN SLOT
B
CLOCK
B
A
SERIAL
MCC
AC
ALARM
48V R
T
N
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
T
N
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
SYSTE
M
OK
Alm
Test
ETHERN
ET
TX
RX
Coll
DSL PO
RT
1
2
3
4
MCP
SYSTEM
OK
Alm
Test
ETHERNE
T
TX
RX
Coll
00-15425-04
Cover Plate
Air Filter