Warning   

Warning   

Warning   

Warning   

Warning   

Caution   

Required Tools and Equipment

You need the following tools and equipment:

•Medium-size Phillips screwdriver

•ESD-preventive wrist strap

•Tie-wraps (optional)

•Antistatic bag (optional)

Removing the Chassis Cover

You must open the access server chassis to gain access to its interior components: boot read-only memory (ROM) software, dynamic random-access memory (DRAM) SIMMs, and Flash memory SIMMs. (When you replace the boot ROMs, you must also remove all feature cards in the chassis.)

Take these steps:

Step 1 Turn the power switch on the access server OFF and disconnect site power. (Note that the power switch is part of the power supply.)

Step 2 If using a DC-powered unit, refer to and complete steps a to d.

Warning   

Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Figure C-1 DC Power Supply Connections

(a) Loosen the three locking screws for the negative, positive, and ground connectors on the DC power supply terminal block.

(b) Remove the -48 VDC wire from the terminal block negative connector (-).

(c) Remove the +48 VDC wire from the terminal block positive connector (+).

(d) Remove the safety ground (green wire) from the terminal block ground connector.

Step 3 Remove all interface cables from the rear panel of the access server.

Step 4 Place the access server so that the front panel is facing you.

Step 5 Remove the four screws on the chassis cover, as shown in .

Figure C-2 Removing the Chassis Cover Screws

Step 6 Lift the chassis cover upward, as shown in , and pull it away from the tabs on the rear of the chassis.

Figure C-3 Removing the Chassis Cover

Step 7 Continue with the following section, "Removing the Old Power Supply."

Removing the Old Power Supply

This section describes how to remove the power supply. Note the following safety warnings before you remove the power supply:

Warning    

Ultimate disposal of this product should be handled according to all national laws and regulations.

Warning   

Only trained and qualified personnel should be allowed to install or replace this equipment.

Warning    

Read the installation instructions before you connect the system to its power source.

Warning    

Before working on a system that has an on/off switch, turn OFF the power and unplug the power cord.

Warning   

Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.

To remove the power supply:

Step 1 Place the access server so that the rear panel is facing you.

Step 2 Remove the three mounting screws that secure the power supply to the chassis and set them aside. (See .)

Note   Figure C-4 shows only a single-plug power supply, however you can also remove a redundant power supply in this step.

Figure C-4 Removing the Power Supply Mounting Screws

Step 3 Turn the access server so that the front panel is facing you.

Step 4 Lift the air separator out of the chassis. (See .)

Figure C-5 Removing the Air Separator

Step 5 Pull the fan closest to the power supply away from the sheet metal tabs. (See .)

Figure C-6 Pulling the Fan Away from the Tabs

Step 6 Lift the fan out of the chassis as shown in , and set the fan on top of the power supply.

Figure C-7 Removing the Fan

Step 7 Depress the tab as shown in Figure C-8.

Caution   

Step 8 Disconnect the fan cable as shown in , and set aside the fan.

Caution   

Figure C-8 Disconnecting the Fan Cable

Step 9 Remove the next fan and disconnect its cable.

Step 10 Remove the cables for the two remaining fans. You can disconnect these cables without removing the fans.

Note   There are three different lengths of 2 wire ± 12 VDC power cables. The two shortest cables go to the two fans that you removed in Step 6 through Step 8. The two longer cables go to the two remaining fans removed in Step 9 and this step. The remaining cable goes to the power connector on the backplane.

These cables are color-coded. If you use an incorrect cable to connect a fan or the backplane, then you will be unable to make one of the other connections. To help with reconnecting the cables, write down which colored cable and the fan to which it connects.

Step 11 Disconnect the power connectors from the backplane as shown in . First disconnect the 2-pin 12V connector, then disconnect the power connector's 4-jack harness.

Figure C-9 Disconnecting the Power Connectors from the Backplane

Note   If you are replacing a redundant power supply, disconnect the 6-pin connector from the motherboard before going to Step 12.

Step 12 Slide the power supply toward the front panel to disengage the power supply hook from the chassis hook, as shown in . Then remove the power supply from the chassis.

Figure C-10 Lifting the Power Supply Out of the Chassis

Warning    

Ultimate disposal of this product should be handled according to all national laws and regulations.

Step 13 Continue with one of the following sections:

•Installing a Standard Power Supply

•Installing a Redundant Power Supply

Installing a Standard Power Supply

Take these steps:

Step 1 Place the power supply as shown in , and then slide it toward the rear panel. You will be able to feel the hooks engage.

Figure C-11 Inserting the Power Supply in the Chassis

Step 2 First reconnect the 4-jack harness and then reconnect the 2-pin 12V connector, as shown in . Note that, for clarity, the illustration does not show the fans in place.

Caution   

Figure C-12 Reconnecting the Power Cables to the Backplane

Step 3 Route the fan cables exactly as shown in . Note that the two longest cables are connected to the two installed fans on the right. The connectors to these two fans will fit into the space between the second and third fans.

Figure C-13 Routing the Fan Cables

Step 4 Insert the middle fan as shown in , making sure that the cable feeds to your left. Position the cables to the two installed fans so that they will fit under the first and second fans. Press the fan into place between the four sheet metal tabs.

Step 5 Reconnect the two 2-pin fan cables as shown in .

Figure C-14 Reconnecting the Fan Cables

Step 6 Reinstall the remaining fan. Make sure you orient the fan so that the cables feed to the right (toward the second fan). Then route the cable completely under the fan before you reconnect it. This takes up the extra length of fan cable and keeps it out of the way.

When correctly assembled, the cables appear as shown in .

Figure C-15 Correct Fan Cable Routing

Step 7 Replace the air separator as shown in , holding all cables to the right of the separator as you slip it into the chassis.

Figure C-16 Replacing the Air Separator

Step 8 Turn the access server so that you face the rear panel, and then reinstall the three mounting screws as shown in .

Figure C-17 Replacing the Power Supply Mounting Screws

Step 9 If you installed a different type of power supply (AC or DC) than was originally installed in the access server, place one of the power ratings labels that arrived in the plastic bag with the documentation directly over the power ratings information on the rear panel. For example, if the original chassis came with an AC power supply and you replaced it with a DC power supply, place the DC power ratings label over the ratings stamped on the rear panel of the chassis. This will ensure that the correct power ratings information appears on the rear panel.

Step 10 Replace the chassis cover as described in the section, "Replacing the Chassis Cover," later in this appendix.

Installing a Redundant Power Supply

A redundant power supply has two power cords to provide higher reliability and load balancing. Use the redundant power supply to:

•Manage your system with alarms and other management features.

•Provide a higher reliability with a second built-in power supply.

•Balance loads.

Note   If your motherboard does not support a redundant power supply, the power supply will balance loads, but cannot be managed by your system with alarms and other management features. See the "Configuring the Redundant Power Supply" section for more details.

To install the redundant power supply:

Step 1 Place the redundant power supply as shown in , then slide it toward the rear panel. You will be able to feel the chassis hook engage with the slot on the bottom of the power supply.

Figure C-18 Inserting the Redundant Power Supply in the Chassis

Step 2 Connect the 6-pin connector to the motherboard, as shown in . Note that, for clarity, the illustration does not show the fans in place or the fan cables.

Note   If you have a motherboard that does not support a redundant power supply with the 6-pin connection, secure the loose 6-pin connector so that it will not interfere with the fans or other moving parts, then go to the next step.

Figure C-19 Connecting the 6-Pin Connector to the Motherboard

Step 3 Reconnect the power connector's 4-jack harness, then reconnect the 2-pin 12V connector, as shown in .

Figure C-20 Reconnecting the Power Cables to the Backplane

Step 4 Route the fan cables exactly as shown in . Note that the two longest cables are connected to the two installed fans on the right. The connectors to these two fans will fit into the space between the second and third fans.

Figure C-21 Routing the Fan Cables

Step 5 Insert the second fan as shown in , making sure that the fan cable feeds to your left. Position the cables to the two installed fans so that they will fit under the first and second fans. Press the fan into place between the four sheet metal tabs.

Step 6 Reconnect the two 2-pin fan cables to the remaining fan, as shown in .

Figure C-22 Reconnecting the Fan Cables

Step 7 Reinstall the remaining fan. Make sure you orient the fan so that the cables feed to the right (toward the second fan). Then route the cable completely under the fan before you reconnect it. This takes up the extra length of fan cable and keeps it out of the way.

When correctly assembled, the cables appear as shown in .

Figure C-23 Correct Fan Cable Routing

Step 8 Replace the air separator as shown in , holding all cables to the right of the separator as you slip it into the chassis.

Figure C-24 Replacing the Air Separator

Step 9 Turn the access server so that you face the rear panel, and then reinstall the three mounting screws as shown in .

Figure C-25 Replacing the Redundant Power Supply Mounting Screws

Step 10 Replace the chassis cover using the procedures in the following section, "Replacing the Chassis Cover," and then configure your redundant power supply using the procedures in the section, "Configuring the Redundant Power Supply."

Replacing the Chassis Cover

To replace the chassis cover, take these steps:

Step 1 Place the chassis bottom so that the front panel is facing you.

Step 2 Hold the chassis cover over the chassis bottom, and align each of the cover tabs with the chassis tabs at the top rear of the chassis, as shown in Figure C-26.

Figure C-26 Replacing the Chassis Cover

Step 3 Lower the front of the top cover to close the chassis, and ensure the following:

•The chassis cover tabs fit under the edge of the chassis rear panel so that they are not exposed.

•The chassis tabs fit under the chassis cover so that they are not exposed.

•The chassis cover side tabs on both sides fit inside the chassis side panels so that they are not exposed.

When the chassis cover is properly assembled, no tabs are visible, as shown in .

Figure C-27 Cisco AS5300 Chassis

Step 4 Secure the chassis cover with four screws.

Step 5 Reinstall the chassis on a rack, desktop, or table.

Step 6 Reinstall all interface cables.

Step 7 Reconnect the AC power cord. Or, if using a DC-powered unit, refer to , and then complete steps a to d.

Warning   

The illustration shows the DC power supply terminal block. Wire the DC power supply using the appropriate wire terminations at the wiring end, as illustrated. The proper wiring sequence is ground to ground, positive to positive, and negative to negative. Note that the ground wire should always be connected first and disconnected last.

Figure C-28 DC Power Supply Connections

Caution   

(a) Insert the safety ground (green wire) into the terminal block ground connector and tighten the locking screw. Ensure that no bare wire is exposed.

(b) Insert the +48 VDC wire into the terminal block positive connector (+) and tighten the locking screw. Ensure that no bare wire is exposed.

(c) Insert the -48 VDC wire into the terminal block negative connector (-) and tighten the locking screw. Ensure that no bare wire is exposed.

(d) Make sure the power supply cord is secured to the cable strain-relief clamps on the DC power supply with cable ties.

Warning   

After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position.

Note   If you are using a redundant power supply, you can order a Y-connector (CAB-AC-Y) to plug into both power connectors in the power supply. If you use this Y-connector, you remove the backup feature of this power supply by eliminating redundant operations and reducing reliability. Cisco highly recommends that you use both power cords whenever possible.

Step 8 Power ON the access server.

The internal power supply fan should power on. If you are using a redundant power supply, the six green LEDs on the front of the power supply should light. If one LED is not lit, consult the appropriate redundant power supply software message to determine where the problem is located.

Step 9 If you are using a redundant power supply, continue with the following section, "Configuring the Redundant Power Supply."

Configuring the Redundant Power Supply

Cisco IOS Support

The following Cisco IOS releases fully support the redundant power supply, however, you can use the redundant power supply with older releases for load balancing purposes only.

•12.0 (1) and later

•11.3(6)AA and later

•11.3(6)T and later

Cisco IOS Configuration Instructions

When the Cisco IOS software detects a failure or recovery from the redundant power supply unit, the Cisco IOS software sends an SNMP message to the configured SNMP server. Unlike messages that are sent to the console every minute, only one SNMP message is sent when the failure is first detected and another one is sent when the recovery is detected. Use this section to manage your Cisco AS5300 universal access server to use SNMP traps (messages). If you do not want to implement SNMP traps, skip this section.

Configure

5300> enable

Password: <password>

5300# 

5300# configure term

5300(config)# 

5300(config)# snmp-server enable traps envmon

5300(config)# 

5300(config)# snmp-server host IP address 

community string

5300(config)# 

5300(config)# exit

5300# 

5300# write memory

Verify

To verify you have enabled sending SNP traps for Redundant Power Supply events:

•Enter the show running-config command and note that envmon is enabled.

5300# show running-config

Building configuration...

Current configuration:

!

version 12.0

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname as5300

!

ip subnet-zero

!

!

interface Ethernet0

 ip address 1.16.44.23 255.255.255.0

 no ip directed-broadcast

!

interface FastEthernet0

 no ip address

 no ip directed-broadcast

 shutdown 

!

ip classless

ip route 0.0.0.0 0.0.0.0 Ethernet0

ip route 223.255.254.0 255.255.255.0 Ethernet0

!

snmp-server community public RO

snmp-server enable traps snmp

snmp-server enable traps isdn call-information

snmp-server enable traps config

snmp-server enable traps entity

snmp-server enable traps envmon

snmp-server enable traps bgp

snmp-server enable traps frame-relay

snmp-server enable traps syslog

snmp-server host 172.22.19.7 traps public

!

line con 0

 transport input none

line aux 0

line vty 0 4

 login

!

end 

Tips

If you are having trouble:

•Verify that you installed the redundant power supply unit properly.

•Verify that you entered the snmp-server commands (mentioned in the Configure section) properly.

Status of Redundant Power Supply

To display the current status of the Redundant Power Supply unit (if present):

•Use SNMP to get requests on CISCO-ENVMON-MIB/CISCO-ACCESS-ENVMON-MIB attributes.

•Enter the show environment command.

5300# show environment

Power Supply:

Redundant Power System is present.

RPS Input Voltage status:  normal

RPS Output Voltage status:  normal

RPS Fan status:  normal

RPS Thermal status:  normal

RPS OverVoltage status:  normal

Board Temperature:

normal

5300#