Replacing the 48 V dc circuit breaker assembly
1. Insert the 48 V dc circuit breaker assembly into the switch chassis.
2. Secure the assembly to the chassis with the mounting screws.
3. Plug the circuit breaker assembly power cable into J48V on the switch planar.
4. Install the center top-cover and secure it by tightening the captive screws.
5. Replace the switch supervisor card and the card retention bracket.
v Refer to “Replacing the switch supervisor card” on page 4-6.
6. Replace the switch from service position.
v Refer to “Replacing an SP Switch2 from service position” on page 3-11.
7. Return to the procedure that directed you here.
Removing the LED power extension cable
Note: Refer to “Handling static-sensitive devices” on page 4-1.
1. Place the switch in service position.
v Refer to “Placing an SP Switch2 into service position” on page 3-10.
2. Remove the fan assembly containing the LED display.
v Refer to “Removing a fan assembly” on page 4-2.
3. Loosen the captive screws on the chassis center top-cover and remove the cover.
4. Unhook and remove both planar air baffles.
5. Unplug the LED extension cable power connector from switch planar jack JLED.
v At this time, do not remove the extension cable from the cover slot.
6. At the rear of the front top-cover and at the top of power bays 2 and 3, loosen the captive screws
securing the removable trays.
7. Remove the tray from bay 3 and then remove the tray from bay 2.
Figure 4-6. Removing SP Switch2 circuit breaker assembly
SP Switch2 service procedures
Chapter 4. FRU removals and replacements 4-9
