3. Damaged data in BIOS code can cause undetermined problems.

Check the LEDs on all the power supplies. If the LEDs indicate the power modules are working correctly and reseating the BladeCenter T components does not correct the problem, remove or disconnect the BladeCenter T components one at a time to a minimal configuration or until you locate the problem. You do not need to remove power from the system. Complete the following steps to remove the components.

1.Shut down the operating system on all blade servers.

2.Turn off the blade servers; then, open the release lever on each blade server, and slide it out of the bay approximately 1 inch.

3.Disconnect power modules 2, 3, and 4 one at a time: v Press the blue release button on the power module.

vOpen the release handle all the way out to the open position.

vSlide the power module out of its bay approximately 1 inch.

4.Disconnect the switch modules one at a time. To do this, remove all cables connected to the switch module; then, pull the release lever all the way down. Slide the switch module out of the bay approximately 1 inch.

The BladeCenter T unit can be checked with the management module Web interface at each stage as components are removed and will work in the minimal configuration. If the minimal configuration does not work, do the following.

1.Recheck the management-module network settings.

2.Unlatch the media tray, and slide it out of the bay approximately 1 inch.

Note: The front and rear panel LEDs will not function with the media tray removed.

3.Move the power module to bay 2.

4.Remove and reconnect the power cord to the power module.

5.Replace the management module.

6.Replace the power module.

7.Replace the backplane.

Problem determination tips

Due to the variety of hardware and software combinations that can be encountered, use the following information to assist you in problem determination. If possible, have this information available when requesting assistance from Service Support and Engineering functions.

vMachine type and model

vMicroprocessor or hard disk upgrades

vFailure symptom

–Do diagnostics fail?

–What, when, where, single, or multiple systems?

–Is the failure repeatable?

–Has this configuration ever worked?

–If it has been working, what changes were made prior to it failing?

–Is this the original reported failure?

vDiagnostics version — type and version level

vHardware configuration

–Print (print screen) configuration currently in use

–BIOS level

Chapter 6. Symptom-to-FRU index 105

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IBM Type 8720, Type 8730 manual Problem determination tips
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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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