Installation and Startup
2-6
FM 456-2 Application Function Module Installation, Hardware, and Startup
C79000-G7076-C458-01
2.4
Installing a Short AT Card
The ATM 478 AT adapter module can accept a short AT card. An AT module can
only be installed if the ATM 478 AT adapter module is not mounted. Only short AT
cards with a slot in the mounting bracket can be installed (see also the chapter on
M7-400 expansion in the
reference manual).
!
Warning
The modules can become damaged.
If the interface module is inserted or removed with the power on, the FM 456-2,
the expansion module or the AT card may be damaged.
Never insert or remove the AT card with the power on. Always switch off the power
supply (PS) before inserting or removing AT cards.
Observe the ESD rules when installing an AT card.
Installing the AT Card
Proceed as follows to install an AT module in an ATM 478 AT adapter module:
1. If the ATM 478 AT adapter module is installed in the rack, you must remove the
module assembly and extract the ATM 478 AT adapter module from this
assembly.
2. Remove the cover from the upper left side of the ATM 478 (see Figure 2-2).
3. Remove the mounting bracket for the AT module from the upper front of the
ATM 478 by undoing the screw (see Figure 2-2).
4. Insert the AT card into the slot from the front (see Figure 2-2).
5. Press the AT card through the side opening and at the front downward into its
connector until it engages. Ensure that the AT module support plate slides
under the metal spring on the front of the ATM 478 (see Figure 2-2).
6. Fit the mounting bracket over the angled part of the support plate of the AT card
and screw it onto the support plate of the AT card and to the ATM 478 (see
Figure 2-2).
7. Fit the cover to the upper left side of the ATM 478.