Chapter 2
Installing the Backup PSU
18
Backup PSU Installation Guide
To remove the internal PSU Module:
1
Disconnect the mains power cable corresponding to the PSU Module you want to remove. The
mains power cable connects the Backup PSU to the AC outlet.
— Disconnect the mains power cable from the AC outlet.
— Disconnect the mains power cable from the AC mains socket on the rear of the Backup PSU.
2
Disconnect the DC power cable corresponding to the PSU Module you want to remove. The
DC power cable connects the Backup PSU to the Collage 740.
— Disconnect the DC power cable from the DC socket on the rear of the Collage 740.
— Disconnect the DC power cable from the DC socket on the rear of the Backup PSU.
3
Using a flat-blade screwdriver, completely loosen the captive screw above the left-hand ejector.
4
Press the ejectors on the existing PSU Module away from the module and, holding the ejectors
with both hands, pull the PSU Module away from the unit.
5
Support the underside of the module with one hand, and remove it from the chassis. Place the
removed module on an antistatic mat or foam pad, or place it in an antistatic bag if you will return
it to the factory.
6
Replace the removed PSU Module with either a blanking plate, or a replacement PSU Module
(see “Installing a second PSU Module into the Backup PSU” in this chapter).
Warning:
When you remove a module, always replace it with a blanking plate or another module.
Leaving option slots empty creates a fire hazard and violates the certification status of the product.
install.fm4 Page 18 Tuesday, August 13, 1996 2:05 PM
