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Cisco UCS B200 M4 Kurulum ve Servis Notu

Diagnostics Button and LEDs

At blade start-up, POST diagnostics test the CPUs, DIMMs, HDDs, and adapter cards, and any failure

notifications are sent to UCS Manager. You can view these notifications in the Cisco UCS Manager System

Error Log or in the output of the show tech-support command. If errors are found, an amber diagnostic LED

also lights up next to the failed component. During run time, the blade BIOS and component drivers monitor

for hardware faults and will light up the amber diagnostic LED as needed.

LED states are saved, and if you remove the blade from the chassis the LED values will persist for up to 10

minutes. Pressing the LED diagnostics button on the motherboard causes the LEDs that currently show a

component fault to light for up to 30 seconds for easier component identification. LED fault values are reset

when the blade is reinserted into the chassis and booted, and the process begins from its start.

If DIMM insertion errors are detected, they may cause the blade discovery process to fail and errors will be

reported in the server POST information, which is viewable using the UCS Manager GUI or CLI. DIMMs

must be populated according to specific rules. The rules depend on the blade server model. Refer to the

documentation for a specific blade server for those rules.

Faults on the DIMMs or adapter cards also cause the server health LED to light solid amber for minor error

conditions or blinking amber for critical error conditions.

Installing a CMOS Battery

All Cisco UCS blade servers use a CR2032 battery to preserve BIOS settings while the server is not installed

in a powered-on chassis. Cisco supports the industry standard CR2032 battery that is available at most

electronics stores.

Warning

There is danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same

or equivalent type recommended by the manufacturer. Dispose of used batteries according to the

manufacturer's instructions.

To install or replace the battery, follow these steps:

Procedure

Step 1

Remove the existing battery:

a) Power off the blade, remove it from the chassis, and remove the top cover.

b) Push the battery socket retaining clip away from the battery.

c) Lift the battery from the socket. Use needle-nose pliers to grasp the battery if there is not enough clearance

for your fingers.

Step 2

Install the replacement battery:

a) Push the battery socket retaining clip away from where the battery fits in the housing.

b) Insert the new battery into the socket with the battery's positive (+) marking facing away from the retaining

clip. Ensure that the retaining clip can click over the top of the battery to secure it in the housing.

c) Replace the top cover.

Cisco UCS B200 M4 Blade Server Installation and Service Note

Servicing a Blade Server