Before you begin to install options in the BladeCenter T unit, read the following information:

vRead the safety information beginning on page 113 and the guidelines in “Handling static-sensitive devices” on page 40. This information will help you work safely with your BladeCenter T unit and options.

vBlue on a component indicates touch points, where you can grip the component to remove it from or install it in the server, open or close a latch, and so on.

vOrange on a component or an orange label on or near a component indicates that the component can be hot-swapped, which means that you can remove or install the component while the BladeCenter T unit is running. (Orange can also indicate touch points on hot-swap components.) See the instructions for removing or installing a specific hot-swap component for any additional procedures that you might have to perform before you remove or install the component.

vYou do not need to disconnect the BladeCenter T unit from power to install or replace any of the hot-swap modules in the BladeCenter T unit. You need to shut down the operating system and turn off a hot-swap blade server on the front of the BladeCenter T unit before removing the blade server, but you do not need to shut down the BladeCenter T unit itself.

vFor a list of supported options for your server, go to http://www.ibm.com/pc/ compat/.

Preparing for system power

There a number of basic differences in preparing for system power between the

Type 8720 (dc power) and Type 8730 (ac power) units.

Type 8720 (dc power)

The BladeCenter T unit does not have a power switch. The BladeCenter Type 8720 (dc power) unit has two dc-power terminal connectors each powering two power modules. The left connection (looking from the rear) supplies power to power-module bays 2 and 4, while the connection on the right supplies power to power-module bays 1 and 3.

Each dc terminal has four #M6 (1/4 in.) studs, one for -48 V dc, one for RETURN, and two for connecting the safety ground wire. The following guidelines are provided for connecting to the -48 V dc power source:

vDC wire rating of 4AWG (7x7x34/36 TC), 105C, 300V UL 10198, CSA approved and VW1 rated.

vRing terminal designed for M6 stud, 4AWG wire, wire size (circular Mil area) of 33100-52600, and a wire insulation diameter of 12.8mm to 13.1mm.

Note: The actual wire gauge and ring terminal will be determined by the current draw and the length of the wire run or as specified by the customer premises guidelines.

vA two-lug ring terminal is required by NEBS for connecting the single safety ground wire.

Attention: Remove the power modules before installing the power connections. Once the power connections are in place, the power modules can be re-installed in the BladeCenter T unit.

After you connect power to the BladeCenter T unit, all the power-module bays receive power. The blade servers in the BladeCenter T unit are connected to dc power but are not turned on. Press the power-control button on the front of each blade server to obtain full power for the blade server and start its operating system

38BladeCenter T Type 8720 and 8730: Hardware Maintenance Manual and Troubleshooting Guide

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IBM Type 8730 manual Preparing for system power, Type 8720 dc power
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Type 8730, Type 8720 specifications

The IBM Type 8720 and Type 8730, part of IBM's extensive line of printers, stand out as reliable and technologically advanced devices designed for both small and large-scale industries. These printers, which were introduced in the early 1990s, catered to the evolving needs of businesses by delivering high-quality output combined with versatility and efficiency.

One of the main features of the IBM Type 8720 is its innovative line printer technology. Unlike traditional printers that utilized a single print head, the 8720 employs a unique printing mechanism that utilizes multiple print wires, ensuring faster print speeds and more precise character formations. This multi-wire technology enables the printer to achieve a print speed of up to 1,500 lines per minute, making it ideal for high-volume printing environments.

The IBM Type 8730, on the other hand, builds upon the foundation set by the 8720 by introducing more advanced features aimed at enhancing user experience. Among its key characteristics is its advanced processing capability, which allows for more complex document handling and high-quality graphics outputs. The 8730's capability to support a range of media types, including labels, envelopes, and fanfold paper, further enhances its versatility, enabling businesses to print various documents without needing multiple machines.

Both printers are designed with user-friendly interfaces that simplify operations and maintenance. Their modular design allows for easy upgrades, ensuring that companies can keep pace with changing printing demands and technological advancements. Additionally, their robust build quality guarantees long-lasting performance even in demanding environments.

In terms of connectivity, the IBM Type 8720 and 8730 support a variety of communication protocols, including parallel and serial interfaces, which facilitate easy integration into existing network environments. This connectivity ensures that businesses can seamlessly connect the printers to their mainframes or personal computers, streamlining the printing process.

Overall, the IBM Type 8720 and Type 8730 are exemplary allies for businesses seeking efficient, high-speed printing solutions. With their advanced technologies, extensive features, and reliable performance, these printers have maintained a loyal following and continue to be relevant in the realms of business printing, showcasing IBM's commitment to innovation and quality in the field of printing technology.
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