Cisco AS5800 Specifications download pdf (Page 191)

5-13

Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide

DOC-7810814=

Chapter 5 Maintenance

Replacement Procedures

Step 4 If you are using the optional AC-input power shelf, connect the monitor cable DB-9 connector at the

base of the filter module and tighten the jackscrews. Verify that the DB-25 connector at the other end of

the cable is connected to the AC-input power shelf (see Figure 5-9). Power ON the AC-input power shelf.

Step 5 Power ON ( | ) the power switches located on each dial-shelf PEM front panel.

Step 6 Note the service maintenance on your Site Log sheet.

This completes the procedure for removing and replacing the filter module.

Replacing an AC-Input Power Supply

The AC-input power shelf is an optional component of the Cisco AS5800 and is used to convert

AC-input power into DC-output power for the DC-powered Cisco 5814 dial shelf. The AC-input power

shelf contains two AC-input power supplies.

This section explains how to remove and replace an individual power supply in the power shelf.

Tools and Parts Required

To remove and replace an individual power supply you need the following tools and parts:

• AC power supply (DS58-AC-PWR=)

• ESD-preventive wrist strap

• If access to the power supply bays is partially blocked by a power strip or other permanent rack

fixture, you need a 1/4-in., flat-blade screwdriver to temporarily detach the fixture from the

equipment rack-mounting strips.

Removing and Replacing a Power Supply

Use the following procedure if you are replacing a faulty power supply, or if you want to reduce the

weight of the power shelf before you install it in a rack. If you do not want to remove power supplies

prior to rack-mounting the AC-input power shelf, skip this section and continue with the “Replacing a

Dial-Shelf Controller Card” section on page 5-15.

The AC-input power shelf is configured with two power supplies. You can remove or replace one of the

power supplies without affecting system operation. When power is removed from one supply, the

redundant power feature causes the second power supply to ramp up to full power and maintain

uninterrupted system operation.

To remove a power supply, perform the following steps:

Caution A single power supply weighs 14.5 lb (6.6 kg). Use both hands when removing or replacing

a power supply.

Step 1 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.

Step 2 Ensure that the power switch for the power supply you are removing is in the OFF (O) position.

1 2 ... 186 187 188 189 190 191 192 193 194 195 196 ... 333 334

No comments

Cisco AS5800 Specifications Page 191