Troubleshooting guide

Cisco UCS B200 M3 Blade Server Installation and Service Note

OL-26624-01

Working Inside the Blade Server

Note Use of this server may require an upgrade to the IOM in the chassis. This server only supports third

generation adapter cards, which have features requiring a Cisco 2204 or 2208 IOM, and are not

backward compatible with the Cisco 2104 IOM.

Diagnostics Button and LEDs

At blade start-up, Power-on Self Test (POST) diagnostics test the CPUs, DIMMs, HDDs and adapter

cards. Any failure notifications are sent to Cisco Ucs Manager. You can view these notification in the

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, component

drivers, and OS all monitor for hardware faults and the amber diagnostic LED for a component lights up

if an uncorrectable error or correctable errors (such as a host ECC error) over the allowed threshold

occur.

LED states are saved. If you remove the blade from the chassis, the LED values are preserved in memory

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

again.

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

reported in the server POST information, viewable using the UCS Manager GUI or CLI. Cisco UCS

blade servers require specific rules to be followed when populating DIMMs in a blade server, and the

rules depend on the blade server model. Refer to the section on DIMM population for those rules.

Drive status LEDs are on the front face of the drive. Faults on the CPU, 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.

Working Inside the Blade Server

This section describes how to perform the following tasks within a blade server:

• Installing a Motherboard CMOS Battery, page 19

• Removing and Installing a CPU and Heat Sink, page 20

• Installing Memory, page 27

• Installing an Adapter Card, page 33

1. Cisco UCS-USBFLSH-S-4GB= is recommended, but if another USB drive will be used it must be no wider than .8 inches,

and no more than 1.345 inches long in order tp provide needed clearances to install or remove the USB drive.