958-000289-003, March 2005)

Overview22

The backup SBAR takes over operation if the active assembly fails, and provides the ability to

maintain connectivity and data frame transmission without interruption. The transition to the backup

assembly is transparent to attached devices.

Each SBAR assembly consists of a card and steel carriage that mounts flush on the backplane. The

carriage provides protection for the back of the card, distributes cooling airflow, and assists in

aligning the assembly during installation. The rear of the carriage contains a green LED that turns

N if the assembly is operational and active, and an amber LED that turns ON if the assembly fails.

The amber LED F

LASHES if FRU beaconing is enabled.

Power module assembly

The power module assembly is located at the bottom rear of the director. The module provides the

following.

• Two single-phase AC power connectors. Each connector is input rated at 85 to 264 VAC.

• A power switch (circuit breaker) that controls AC power distribution to both power supplies. The

breaker is set manually, or is automatically tripped by internal software if thermal sensors

indicate the director has overheated.

• A 9-pin maintenance port that provides a connection for a local terminal or dial-in connection

for a remote terminal.

Tools and test equipment

This section describes tools and test equipment that may be required to test, service, and verify

operation of the director and attached HAFM appliance. These tools are either supplied with the

director or must be supplied by service personnel.

Tools supplied with the director

The following tools are supplied with the director. Use of the tools may be required to perform test,

installation, service, or verification tasks.

• Torque tool with hexagonal adapter—The torque tool with 5/32” hexagonal adapter (Figure 4),

is required to remove and replace director logic cards.

CAUTION: The torque tool supplied with the Director 2/64 is designed to tighten director logic

cards and is set to release at a torque value of six inch-pounds. Do not use an Allen wrench or

torque tool designed for use with another HP product. Use of the wrong tool may overtighten and

damage logic cards.

Figure 4 Torque tool and hex adapter

• Loopback plug—An SFP multi-mode (short-wave laser) or single-mode (long-wave laser)

loopback plug (Figure 5), is required to perform port loopback diagnostic tests. One loopback