Archive for February, 2010

Notes for removing the car battery cable

Sunday, February 21st, 2010

1. Did not read the engine electronic control unit (ECU) records the fault code can not be dismantled before the battery cable

Because the fault code read before they hastily removed the battery cable or unplug the power supply fuse, due to interruption of power supply ECU, stored in its random access memory in the fault code will be automatically eliminate. If you want to re-access the fault information is necessary to repeat or reproduce the failure occurred when the working condition and environmental conditions, but who can not start the engine, so that the future operation would no longer be able to obtain fault code, lost an important failure to judge information, so Prior to the repair electric Inspiron 1100 battery,Inspiron 1150 battery motors, should be required to record the first ECU fault code, and then carry out other repairs.

2. Ignition switch is connected (ON) position, can not be easily removed battery cable

When the ignition switch is (ON) position, regardless of whether the engine running, you can not remove the batteries or unplug the power cord fuse. Because of sudden power cuts may produce self-inductance of the coil circuit electromotive force, which appears very high transient voltage (and sometimes even as high as ten thousand volts), so that ECU and related sensors, microelectronic devices were seriously damaged.

In addition, with the battery voltage is the same as any other electrical devices, wires, ignition switch in the ON position when they can not be removed, otherwise the same will produce self-inductance of the coil related to EMF, thus ECU or sensor. These electrical installations include: ignition system, idle speed stepper motor, ECU’s programmable read-only memory (PROM), fuel injector, air-conditioning, and other electromagnetic clutch, as well as some of the ECU connection lines.

3. Can not just remove Inspiron 1501 battery cable to use the method Clear fault code

For most electric motors run, remove the battery cable or remove the fuse leading to the ECU to maintain power for 30 seconds, you can clear the fault code stored in the ECU. But for some engines it is not suited to this approach, because the vehicle anti-theft, audio, quartz, etc. memory (including anti-theft password) are also stored in random access memory in the memory after the power failure will also be removed together, resulting in phenomena such as sound lock code on these engines should be based on the requirements of the maintenance manual methods to clear the fault code, and must not arbitrarily remove battery cable.

IBM access to the U.S. federal government orders for 74.4 million U.S. dollars products

Saturday, February 20th, 2010

IBM’s 18 federal agencies announced that it would provide a period of 8 years worth 74.4 million U.S. dollars of computer equipment and modernization of office equipment.

According to reports, the U.S. General Services Administration provides the contract, and in 8 years time procurement of such equipment. IBM will streamline the way government orders in the nine applications for new equipment into one system.

In addition, IBM is working with Northrop Grumman Corporation (Northrop Grumman), vertex information and computer consulting services company (Vertex Information and Computer Consulting Services Inc.), And Collins Consulting (Collins Consulting Inc.) Cooperation for the completion of orders for .

It is learned that the U.S. General Services Administration’s current large-scale procurement will focus on improving the working conditions for federal agencies, the procurement of equipment, services and other assets.

IBM’s shares rose after the announcement of the 1.3%, rising 1.59 to 127.92 U.S. dollars.

Samsung displayed the time the world’s longest battery-powered laptops

Wednesday, February 10th, 2010

At a recent meeting at the 43rd session of the United States International Consumer Electronics Show, Samsung Electronics exhibited “N210/N220″ such as 4 new notebooks. That several high-end notebook computer battery life of up to 12 hours.

It is said, “N210/N220″ has a high-end fashion look and longer battery life, Samsung Electronics in 2010 launched new high-end notebooks. Samsung also announced a variety of colors emphasize “N150″, durable, high-end touch-screen “NB30″, and the use of Linux Moblin OS “N127″.

Samsung Electronics, IT Solutions, vice president of NAM SEONGWOO said, “Samsung Electronics plans to enrich the color, large-capacity memory, powerful access to the internal structure of the world’s notebook market in 2010. In the future, we will be based on consumer demand for diverse to provide a greater variety of notebook computers, to enhance market competitiveness. “