Cisco Systems 124778, 124792, 159330 Replace Circuit Breakers, Circuit Breaker On/Off Positions

Chapter 3 Component Replacement

3.2.3 Replace Circuit Breakers

•J8 terminal block (Figure 3-4or Figure 3-5#4)

•J1 Ethernet cable (Figure 3-4or Figure 3-5#5)

•J1 terminal block (Figure 3-4or Figure 3-5#6)

Step 14 Reconnect the alarm cable connections (Figure 3-4or Figure 3-5#2).

•–J16 terminal block

•–J15 terminal block

•–J14/J13 terminal blocks

Step 15 Slide the controller tray back into the system shelf.

Step 16 Replace the controller faceplate by attaching it to the system shelf with the two front thumbscrews.

Step 17 After installing the controller, the controller and rectifier LEDs will blink. It may take a few minutes for the controller to communicate with all rectifiers. At this point, all rectifier output voltages will return to the programmed level. During this syncronization period output will not be affected.

3.2.3 Replace Circuit Breakers

Step 1 Make certain all breakers to be replaced are in the OFF position (Figure 3-6).

Figure 3-6 Circuit Breaker On/Off Positions

Common

Not Used

Normally Closed

Hood

On

Off

124766

Step 2 Remove the 1RU Distribution Shelf faceplate by loosening the two thumbscrews on the shelf faceplate (Figure 3-7).

Cisco AC/DC Power System User Guide, R1.0

3-6 May 2006