Installing A Modular 3611 Dsu - Paradyne COMSPHERE 3610 Operator's Manual

Power-Up Routine
When power is applied, the DSU:
Determines what options (DBM, MUX-TDM or
MCMP) are installed, if any.
Runs a Device Test on itself and each of the
installed options.
During the tests, all indicators on the DCP light
briefly and the message Power-Up Tests appears
on the liquid crystal display (LCD).
Displays the results of each test momentarily as
Pass, Fail, or Abrt. (Abrt indicates that the Device
Test was aborted because a network loopback was
in progress during the power-up procedure.) These
tests take about 20 seconds to complete.
If the DSU fails the power-up test:
"
Procedure
1. Confirm the hardware options that are installed, if
any.
2. Go to the Configuration (Confg) branch, load and
save a factory-set configuration (FacC or FacT).
3. Return to the Test branch.
4. Re-execute the Device Test. If the test passes,
continue with this procedure.
If the test fails again, contact your service
representative for instructions on how to return the
DSU.
Since the DSU is not connected to the network,
the red Alrm indicator is lit, and the LCD displays
No Signal, indicating a facility alarm. The LCD
displays Health and Status information as
described in the Status Branch
Chapter 4.
3610-A2-GB91-90

Installing a Modular 3611 DSU

DSU requires the installation of a rear connector plate
onto the rear of the COMSPHERE 3000 Series Carrier.
After the initial installation, the DSU can be installed and
removed from the front of the carrier without first
disconnecting the DTE cables at the rear of the carrier.
This section provides the initial installation procedure and
the procedure for subsequent installations.
time:
section of
July 1999
The initial installation procedure for the Modular 3611
To install a DSU and rear connector plate for the first
"
Procedure
1. At the rear of the carrier, set the tab on the rear
connector plate into one of the slotted grooves on
the carrier's backplane. Loosely fasten the screws.
Make sure the rear connector plate uses the same
slot position intended for the DSU.
2. Loosely fasten the screw attached to the rear
connector plate, allowing for slight adjustment
that may be needed when installing the DSU.
3. Change any default hardware strap settings that
may be required before installing the DSU in the
carrier. For example, straps that determine:
Permissive (default) or programmable V.32
DBM interface switch.
Enabled (default) or disabled Test Mode
Indication jumper.
4. Using a Phillips screwdriver, loosen the screw
holding the circuit pack lock and rotate the lock to
the open position (Figure
5. At the front of the carrier, hold the DSU vertically
with the latch on its faceplate in the open position.
Then, insert the circuit card into the top and
bottom circuit card guides for the slot that
contains the rear connector plate.
Model 3611 Installation
3-3). Open the latch.
3-7