User manual DELL OPTIPLEX GX50

[. . . ] c o m Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. Abbreviations and Acronyms For a complete list of abbreviations and acronyms, see the "Glossary. " ____________________ Information in this document is subject to change without notice. Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden. [. . . ] If you do not have another monitor, contact Dell for technical assistance. 7 Allow one minute for the computer to initialize its components, and then adjust the monitor's brightness and contrast controls. Contact Dell for technical assistance. Sound and Speaker Problems Basic Checks: · If using external speakers: ­ ­ ­ · Make sure that the speaker cables are firmly connected to the computer. Test the electrical outlet: verify that the speakers are connected to a working electrical outlet. Ensure that the speakers are turned on. If using a sound card, make sure external audio devices are connected to the sound card's connectors and not to the microphone, line-out, or line-in connectors on the computer's front or back panels. Check for interference: electrical appliances on the same circuit or operating in close proximity to the computer can cause interference. · · · If the problem still exists after you complete the basic checks, fill out the Diagnostics Checklist as you perform the following steps: S o lv ing Pr o ble m s 165 w w w. c o m 1 Turn off nearby fans, lights, lamps, or other electrical devices. Go to step 2. 2 Enter system setup and make sure that Sound under the Integrated Devices option is set to On. Then exit system setup properly to save the information, and reboot the computer. Contact Dell for technical assistance. Printer Problems Basic Checks: · · · · · Disconnect the cable from the computer and check the cable connector for bent or broken pins. If the cable is not damaged, make sure that it is firmly connected to the computer. Test the electrical outlet: verify that the printer is connected to a working electrical outlet. Check for interference: electrical appliances on the same circuit or operating in close proximity to the computer can cause interference. If the problem still exists after you complete the basic checks, fill out the Diagnostics Checklist as you perform the following steps: 1 Perform the procedure in "Serial or Parallel Device Problems. " Is the device working properly? 166 So lv ing Pr o ble m s Yes. If you bought the printer from Dell, contact Dell for technical assistance. If you did not, take it to an authorized service center for repair. 3 Try to print again. Contact Dell for technical assistance. Serial or Parallel Device Problems If a computer error message indicates a port problem or if equipment connected to a port seems to perform incorrectly or not at all, the source of the problem can be any of the following: · · · · · · · · A faulty connection between the I/O port and the device Incorrect settings for system setup options Incorrect settings in the operating system's configuration files A faulty cable between the I/O port and the device A faulty device Faulty I/O port logic on the system board Conflicting COM port settings Lack of drivers NOTE: If you are having a problem with a printer, see "Printer Problems. " Basic Checks: · · Disconnect the cable from the computer and check the cable connector for bent or broken pins. If the cable is not damaged, make sure that it is firmly connected to the computer. S o lv ing Pr o ble m s 167 w w w. Check for interference: electrical appliances on the same circuit or operating in close proximity to the computer can cause interference. If the problem still exists after you complete the basic checks, fill out the Diagnostics Checklist as you perform the following steps: 1 Enter system setup and check the Integrated Devices option settings. Then exit system setup properly to save the information, and reboot the computer. For a serial device, check the Serial Port options; for a parallel device, check the Parallel Port options. See the device's documentation for additional information on port settings and configuration requirements. Go to step 2. 2 Run the Serial Ports device group and/or the Parallel Ports device group in the Dell Diagnostics. These device groups check the basic functions of the system board's I/O port logic. [. . . ] c o m in the United States, many customers of large manufacturers make UL approval a mandatory requirement. UPS Uninterruptible power supply. A device that allows your computer to keep running for a limited amount of time after the primary power source is lost. Typically, a UPS can also provide protection against power surges. URL Uniform Resource Locator. A standard way of specifying the location of an object, such as an HTML document, on the Internet. [. . . ]