Paradyne 3610 Software Installation Manual page 5

Model 3611 Firmware
Installation
To access the DSU to install the firmware in a
.
Model 3611 DSU, perform the following steps:
Procedure
1. Use a Phillips screwdriver to loosen the screw
holding the circuit pack lock, and rotate the lock
to the open position. With a MUX card installed,
open both circuit pack locks. It is not necessary to
power down the carrier.
Circuit
Pack
Lock
Closed
(Locked)
Open
(Unlocked)
Latch
2. Pull out and down on the latch at the bottom of the
DSU's faceplate until the circuit card starts to
come out of its slot in the carrier. Pull the DSU
circuit card free of the carrier and lay on a clean
flat work surface. When a MUX card is installed,
there are two latches to open. (See next section.)
4
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Accessing a Model 3611 DSU with MUX
Procedure
1. Remove the 3611 DSU with a MUX. The MUX
card for TDM or MCMP is attached to the DSU.
Together, the two cards use two carrier slots.
DSU
Card
MUX
Card
Circuit
Card
Guides
2. Remove the two standoff posts and the four
double-ended, Phillips-head screws to detach the
MUX card from the DSU card.
495-14813
February 1996
DSU Card
Standoff
Posts
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Phillips-Head
Screws
495-14827
MUX Card
Flat
Washers
495-14828
3610-A2-GZ43-20