Removing An Sru From A Cabinet - Northern Telecom DNC-50 Installation Manual

18 Setting the NT4G19EA Power Supply for 115 or 220 Vac Operation
(5) If the the line card locations are not already recorded in the Analog Link SRU
(6) Replace the line card cover.
(7) Gently slide the drawer into place in the SRU and close the drawer handles.
(8) With the 1/4-inch nutdriver, secure the drawer with the nuts at the top and

Removing an SRU from a Cabinet

If an SRU must be removed for maintenance or other purposes, do so according to
the following procedure. (Refer to Fig. 6-1 at the beginning of this part for an
illustration of SRU features.)
Always power the system down before removing any SRU. Before powering
down the system, ensure that all users have signed off. Then use the courtesy
down function in System Administrative Services as described in Step 1.
(1) Before removing any SRU, you must power the system down. If the system has
(2) Power the system down
(3) Disconnect any cables from the rear of the SRU as described in Part 8.
(4) Release the primary latches on the top and bottom of the SRU faceplate by
(5) Pull outward on the primary latches at the bottom and top of the SRU with
(6) Grasp the faceplate of the disengaged SRU and slide it forward until the safety
(7) Disengage the safety latch on the bottom runner of the SRU. If it does not
Practice 450-1011-201
Drawer Map of the Site Records, 450-1011-152, write down the information
now and put it into the Site Records.
Note: Card location information is used to configure the lines within the system
during software installation. The information is also used to specify where
twisted-pair wires are connected to the office cross-connect panel.
bottom.
already been powered down, go to Step 2. Otherwise, follow this sequence:
a) Stop data collection.
b) Inform all users about the system shutdown. Insttruct all users
to stop data collection and log off after collection stops.
c) Log off all nodes.
d) Stop any active spool jobs.
pushing the secondary latches with your finger. The secondary latch is
underneath the primary latch.
sufficient pressure to release the SRU from the backplane connector.
latch on the bottom of the SRU engages. Do not pull hard on the SRU at this
point.
disengage easily, relieve the pressure on it by pushing gently on the SRU.
- CAUTION -