Lenovo ThinkPad L520 (English) User Guide - Page 177

Spills on the keyboard With a mobile computer, there are increased chances of spilling liquids on the keyboard. Because most liquids conduct electricity, liquid spilled on the keyboard could create numerous short circuits, potentially causing irreparable damage to your computer. If you spill something on your computer: Attention: Be sure that no liquid creates a short circuit between you and the ac power adapter (if in use). Although you might lose some data or work by turning off the computer immediately, leaving the computer on might make your computer unusable. 1. Carefully unplug the ac power adapter immediately. 2. Turn off the computer immediately. If the computer does not turn off, remove the battery. The more quickly you stop the current from passing through the computer the more likely you will reduce damage from short circuits. 3. Wait until you are certain that all the liquid is dry before turning on your computer. Note: If you want to replace your keyboard, you can purchase a new one. Error messages and beep errors Error code 0182 0183 0184 0185 0187 0189 0190 Beep symptom Error message Solution Two short beeps Four short beeps, one long beep Four short beeps, pause, three short beeps, pause, one short beep, pause, one short beep Seven short beeps, one long beep, four short beeps, one long beep, one short beep, one long beep, one short beep, one long beep. The computer keeps beeping. Two short beeps Two short beeps Two short beeps Bad CRC2. Enter BIOS Setup and load Setup defaults. Turn off the computer. Turn on the computer. Press F1 to enter into BIOS Setup Utility when ThinkPad logo appears. Press F9 to load default settings. Press F10 to exit. Restart the computer. Fan error Cooling fan has failed. Have the computer serviced. Dram is unplugged Memory is not installed. Install memory. Dram is not well plugged Reinstall memory. 0187: EAIA data access error 0189: Invalid RFID configuration information area 0190: Critical low-battery error The access to EEPROM has failed. Have the computer serviced. The EEPROM checksum is not correct (block # 4 and 5). The system board should be replaced, and the UUID needs to be reinstalled. Have the computer serviced. The computer turned off, because the battery is low. Connect the ac power adapter to the computer and charge the battery, or replace the battery with a fully charged one. Chapter 10. Troubleshooting computer problems 159