Panasonic 1200N - Manual (Page 121)

Modifications Power Unit Installation
Centillion 1200N ATM Switch User Manual 10-5
NTP 297-8103-903
Figure 10-6: Inserting the Power Unit
Make sure you use both hands and insert the power unit slowly. Inserting
the power unit quickly may cause damage to the connector or a failure. An
injury may result if you hold the power unit with only one hand.
4. Tighten the screw on the back of the main unit to fix the power unit.
5. Install power unit cover and securely fasten with the screws on both ends. Make
sure the right side is up when installing the power unit cover.
6. Install the front cover. Refer to "Installing the Front Cover" on page 10-15 .