Cisco AS5800 Specifications download pdf (Page 186)

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Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide

DOC-7810814=

Chapter 5 Maintenance

Replacement Procedures

Step 6 Power ON the central office circuit breaker connected to the PEM you are replacing.

Step 7 Power ON ( | ) the power switch located on the PEM front panel. (See Figure 5-4.)

This completes the procedure for replacing a PEM and connecting to your DC power source. Continue

with section “Verifying and Troubleshooting the Installation” on page 8 for installation troubleshooting

tips.

Connecting to an AC Power Source

If you are using the optional AC-input power shelf, you cannot remove and replace a PEM while the

system is powered on.

Caution If your system requires the AC-input power shelf for AC-to-DC conversion, you should

schedule a time for system maintenance and replace the PEM at that time. See the

“Replacing an AC-Input Power Supply” section on page 5-13 for installation and

replacement instructions.

Verifying and Troubleshooting the Installation

To complete the installation, verify that the power supply LEDs operate properly and that you have

wired the DC-input connections correctly. Each PEM contains two LEDs on the front panel - POWER

and MISWIRE. (See Figure 5-4.)

• Verify that the power LED is on.

If neither the power nor the miswire LED is on, check the voltage at the DC-input terminal block.

If the voltage reading falls between –40 and –60 VDC, replace the PEM.

• Verify that the miswire LED remains off.

If the miswire LED is on, the two DC conductors entering the PEM DC-input terminal block are

reversed. Power OFF power at the source and reverse the connections.

This completes the procedures for installing and troubleshooting a power entry module. To verify that

the PEM is properly installed, refer to the Cisco AS5800 Access Server Hardware Installation Guide,

available online at

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_serv/as5800/hw_inst/

Replacing a Filter Module

The Cisco AS5800 is equipped with a passive DC power filter, which contains a broadband

electromagnetic interference (EMI) filter and circuitry for monitoring power coming into the Cisco 5814

dial shelf. The DC power filter is housed in the filter module, which resides in the dial shelf between the

two power entry modules (PEMs).

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Cisco AS5800 Specifications Page 186