Dell Latitude D6. D6. 30c User's Guide. Back to Contents Page. Dell. During normal operation, the keyboard status lights display the current status (on or off) of the Num Lock, Caps Lock, and Scroll Lock features. If the computer starts without error, the lights flash, and then turn off. If the computer malfunctions, however, you can use the status of the lights to help identify the problem. Diagnostic Light Codes During POSTTo troubleshoot a problem with your computer, read the sequence of the keyboard status lights in order from left to right (Num Lock, Caps Lock, and then Scroll Lock). If the computer malfunctions the individual lights display a status of either On. Light Pattern. Problem Description. Suggested Resolution. No memory modules are detected. If two or more memory modules are installed, remove the modules, then reinstall one module and restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error (see Memory). If available, install working memory of the same type into your computer (see Memory). If the problem persists, contact Dell Support. Memory modules are detected, but a memory failure has occurred. If two or more memory modules are installed, remove the modules, then reinstall one module and restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error (see Memory). If available, install working memory of the same type into your computer (see Memory). If the problem persists, contact Dell Support. System board failure has occurred. Contact Dell Support. A possible processor failure has occurred. Reseat the processor (see Memory). If the problem persists, contact Dell Support. A possible graphics card/video failure has occurred. Application Notes for the T6963C LCD Graphics Controller Chip. I Write Select (Active Low). O Control Signal for AC drive of LC CL1 (LP) O Latch clock CL2 (SCP). Solving Problems Power Problems. Use the AC adapter to connect the computer to an electrical outlet. See 'Using the System Setup Program.' Keyboard clock line failure. What is the name of a mini program that you can display on the desktop for information at a glance? Write aC program to display your name 10 times? MikroElektronika offers development tools, compilers. Riverdi Display 2.8' Riverdi Display 2.8' Res. Clock and Timing; Display; HMI; Interface; Miscellaneous; Mixed Signal.
Sample C-program/code for STM32F0 Discovery board. In this module a very-simple c program/code to display 0-9 on a 7-segment. Click below to visit next and other embedded system. Reseat any installed graphics cards. If available, install a working graphics card into your computer. If the problem persists, contact Dell Support. A possible LCD failure has occurred. Reseat the LCD cable (see your computer's Service Manual). If the problem persists, contact Dell Support. A possible keyboard failure has occurred. Reseat the keyboard (see Keyboard). If available, connect an external keyboard. If the problem persists, contact Dell Support. A possible modem failure has occurred. If available, install a working modem into your computer. If the problem persists, contact contact Dell Support. Dell. The service is free and can be customized for content, format, and how frequently you receive notifications. To enroll for the Dell Technical Update service, go to support. Dell Diagnostics. Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you complete these checks. When to Use the Dell Diagnostics. If you experience a problem with your computer, perform the checks in Lockups and Software Problems and run the Dell Diagnostics before you contact Dell for technical assistance. It is recommended that you print these procedures before you begin. Enter the System Setup Program (see System Setup Program), review your computer's configuration information, and ensure that the device you want to test displays in system setup and is active. Start the Dell Diagnostics from your hard drive or from the Drivers and Utilities media. Starting the Dell Diagnostics From Your Hard Drive. The Dell Diagnostics is located on a hidden diagnostic utility partition on your hard drive. If the computer is connected to a docking device (docked), undock it. See the documentation that. Ensure the computer is connected to a known good. Select Diagnostics from the boot. Enter>. To stop the assessment and restart the computer, press < N> ; to continue to the next test, press < Y> ; to retest the component that failed, press < R>. If failures are detected during the Pre- boot System Assessment, write down the error code(s) and contact Dell. If the Pre- boot System Assessment completes successfully, you will receive the following message: Booting Dell Diagnostic Utility Partition. Press any key to continue. Press any key to start the Dell Diagnostics from the diagnostics utility partition on your hard drive. If multiple versions are listed, select. This test typically takes 1. Run Express Test first to increase the possibility of tracing the problem quickly. Extended Test. Performs a thorough check of devices. This test typically takes 1 hour or more and requires you to answer questions periodically. Custom Test. Tests a specific device. You can customize the tests you want to run. Symptom Tree. Lists the most common symptoms encountered and allows you to select a test based on the symptom of the problem you are having. If a problem is encountered during a test, a message appears with an error code and a description of the. Write down the error code and problem description and follow the instructions on the. The device list may not display the names of all the components installed on your computer or all devices attached to your computer. Parameters. Allows you to customize the test by changing the test settings. When the tests are completed, if you are running the Dell Diagnostics from the Drivers and Utilities. To exit the Dell. Diagnostics and restart the computer, close the Main. Menu screen. Use this support utility for self- support information, software updates, and health scans of your computing environment. Accessing the Dell Support Utility. Access the Dell Support Utility from the Dell Support icon on the taskbar or from the Start menu. If the Dell Support icon does not appear in your taskbar: Click the Start button and point to Programs. If the floppy, CD, or DVD drive is not listed, perform a full scan with your antivirus software to check for and remove viruses. Viruses can sometimes prevent Windows from recognizing the drive. Test the drive — Insert another floppy disk, CD, or DVD to eliminate the possibility that the original one is defective. Insert a bootable floppy disk and restart the computer. Clean the drive or disk. Ensure that the CD is snapped onto the spindle. Check the cable connections. Check for hardware incompatibilities. Run the Dell Diagnostics — See Dell Diagnostics. Media drive problems. Problems writing to a CD/DVD- RW drive. Close other programs — The CD/DVD- RW drive must receive a steady stream of data when writing. If the stream is interrupted, an error occurs. Try closing all programs before you write to the CD/DVD- RW. Turn off Standby mode in Windows before writing to a CD/DVD- RW disc — Search for the keyword standby in the Windows Help and Support Center for information on power management modes. To access the Help and Support Center, click Start. Try allowing the computer to return to room temperature before turning it on. Run Check Disk — Click the Start button and click My Computer. Disconnect the telephone line from the modem and connect it to a telephone. Listen for a dial tone. If you have other telephone devices sharing the line, such as an answering machine, fax machine, surge protector, or line splitter, then bypass them and connect the modem directly to the telephone wall jack. If you are using a line that is 3 m (1. Run the Modem Diagnostic Tool — Click the Start button, point to All. Programs and then click Modem Diagnostic Tool. Follow the instructions on the screen to identify and resolve modem problems. Verify that the modem is communicating with Windows — Click the Start button and click Control Panel. With the Outlook Express e- mail program open, click File. If Work Offline has a checkmark next to it, click the checkmark to remove it and connect to the Internet. For help, contact your Internet service provider. Scan the computer for spyware — If you are experiencing slow computer performance, you frequently receive pop- up advertisements, or you are having problems connecting to the Internet, your computer might be infected with spyware. Use an anti- virus program that includes anti- spyware protection (your program may require an upgrade) to scan the computer and remove spyware. For more information, go to support. Error Messages. Fill out the Diagnostics Checklist (see Diagnostics Checklist) as you complete these checks. If the message is not listed, see the documentation for the operating system or the program that was running when the message appeared. Auxiliary device failure — The touch pad, track stick, or external mouse may be faulty. For an external mouse, check the cable connection. Enable the Pointing Device option in the system setup program. If the problem persists, contact Dell (see Obtaining Assistance). Bad command or file name — Ensure that you have spelled the command correctly, put spaces in the proper place, and used the correct pathname. Cache disabled due to failure — The primary cache internal to the microprocessor has failed. Contact Dell (see Obtaining Assistance). CD drive controller failure — The CD drive does not respond to commands from the computer (see Dell Support Utility). Data error — The hard drive cannot read the data (see Dell Support Utility). Decreasing available memory — One or more memory modules may be faulty or improperly seated. Reinstall the memory modules and, if necessary, replace them (see Memory Problems). Disk C: failed initialization — The hard drive failed initialization. Run the hard drive tests in the Dell Diagnostics (see Dell Diagnostics). Drive not ready — The operation requires a hard drive in the bay before it can continue. Install a hard drive in the hard drive bay (see Drive Problems). Error reading PCMCIA card — The computer cannot identify the PC Card. Reinsert the card or try another PC Card (see Installing a PC Card or Express. Card). Extended memory size has changed — The amount of memory recorded in NVRAM does not match the memory installed in the computer. If the error appears again, contact Dell (see Obtaining Assistance). Seven segment display c program/code for STM3. F0 Microcontroller Discovery board. Display of numerics 0 to 9 on. LED display. In this module. LED display using STM3. F0- DISCOVERY microcontroller (MCU). Hardware requirements along with the board: 1. Seven segment display (Common Cathode)2. Resistors (3. 3 Kilo ohms)3. General purpose printed circuit board or a breadboard. Seven segment display: Seven segment LED is device having seven light emitting. To know more on 7- segment LED visit: http: //ee. EE3. 61/Fall. 06/Lab/7disp. Digilab. Notes/Digilab/Components/node. To use them you should know the pin configuration of the. As you must have guessed. They are internally connected. So. they have total of 1. A 7- Segment display has 7- segments/pins named as a, b, c. DP (decimal point) along with two extra pins. GND (in case of common cathode). To display numbers in seven- segment display, it is necessary. Below table shows the segment control for characters 0- 9. Circuit diagram of 7- Segment Display Interfacing to. ARM Cortex M0 microcontroller powered STM3. F0 board: The below circuit connects 7- Segment display with port C. A of microcontroller. Programming: The sample c- program/code below continuously display digits.
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