Technical data

Brocade SilkWorm 4100 Hardware Reference Manual 3-7

Publication Number: 53-0000563-02

Maintaining the SilkWorm 4100

Diagnostic Tests

In addition to POST, Fabric OS includes diagnostic tests to help you troubleshoot the hardware and

firmware. This includes tests of internal connections and circuitry, fixed media, and the transceivers and

cables in use. The tests are implemented by command, either through a telnet session or through a

terminal set up for a serial connection to the switch. Some tests require the ports to be connected by

external cables, to allow diagnostics to verify the serializer/deserializer interface, transceiver, and cable.

Some tests require loop back plugs.

Diagnostic tests are run at link speeds of 1 Gbit/sec, 2 Gbit/sec, and 4 Gbit/sec.

For information about specific diagnostic tests, refer to the Brocade Fabric OS Procedures Guide.

Field Replaceable Units (FRUs)

You can replace the power supplies and fan assemblies onsite without the use of special tools. The power

supplies and fan assemblies are keyed to ensure correct orientation during installation. Replacement

instructions are provided with all replacement units ordered.

Power Supplies

The two power supplies are hot-swappable if replaced one at a time. They are identical and fit into

either power supply slot.

Fabric OS identifies the power supplies as follows (viewing the switch from the nonport side):

• Power supply #1 is on the right

• Power supply #2 is on the left

Any of the following methods can be used to determine whether a power supply requires replacing:

• Check the power supply status LED next to the On/Off switch (see “LEDs on the Nonport

Side of the Switch” on page 3-4)

• Type the psShow command at the command prompt to display power supply status as

shown below:

• In Advanced Web Tools, click the Power Status icon.

Note

Diagnostic tests might temporarily lock the transmit and receive speed of the links during diagnostic

testing.

Warning

The SilkWorm 4100 has two power cords. To remove all power from the switch, disconnect both power

cords before servicing.

switch:admin> psshow

Power Supply #1 is OK

V10415, QW2M0000269 , 60-0000849-01,X4, DPSN-210BB A, S4, QW2M0000

Power Supply #2 is OK

V10415, LX2M000020 , 60-0000849-01,X4, DPSN-210BB A, S3, LX2M0000