Lenovo 019624U Hardware Maintenance Manual

Contents

Table 2. Numeric error codes (continued)Symptom or error (beeps, if any) FRU or action, in sequence02F7Fail-safe timer NMI failed(two short beeps)1. DIMM.2. System board.1802Unauthorized network card is plugged in—Turn off andremove the miniPCI network card.(two short beeps)1. Remove the Mini PCI network card.2. System board.1804Unauthorized WAN card is plugged in—Power off andremove the WAN card.1. Remove the wireless WAN card.2. System board.Error messagesTable 3. Error messagesSymptom or error (beeps, if any) FRU or action, in sequenceBad CRC2. Enter BIOS Setup Utility, and load Setupdefaults.(two short beeps)Press F1 to enter BIOS Setup Utility. Press F9, andEnter to load the default setting. Then save the currentsetting by pressing F10, and restart the computer.Fan error.(four short beeps, one long beep)1. Fan.2. Thermal grease.3. System board.DRAM is unplugged.(one short beep, pause, three short beeps, pause, threeshort beeps, pause, one short beep.)Memory card is not installed. Install memory card.DRAM is not well plugged.(one short beep, pause, three short beeps, pause, threeshort beeps, pause, one short beep.)Reinstall the memory card.Operating system not found. 1. Check that the operating system has no failureand is installed correctly.2. Enter BIOS Setup Utility and see whether the harddisk drive is properly identified. If you still see thesame error message, check the boot sequence.3. Reinstall the hard disk drive.4. Reinstall the operating system.System Configuration Data Read Error(two short beeps)Press F1 to enter BIOS Setup Utility. Press F9, andEnter to load the default setting. Then save the currentsetting by pressing F10, and restart the computer.No-beep symptomsTable 4. No-beep symptomsSymptom or error FRU or action, in sequenceNo beep, power-on indicator on, LCD blank, and noPOST.1. Make sure that every connector is connectedtightly and correctly.2. DIMM.3. System board.No beep, power-on indicator on, and LCD blank duringPOST.1. Reseat DIMM.2. System board.Chapter 4. Related service information 39