Spills On The Keyboard; Error Messages - Lenovo ThinkPad Edge E420 User Manual

4. While the computer is off, remove all sources of power and external hardware. Refer to the procedure
in "Replacing memory" on page 93 on how to remove and reseat the memory modules. Remove any
non-original memory module added to your computer. After removing the extra memory module and
reseating the original memory module, repeat step 2. If the computer still does not turn on, consult the
user's reference guide for other customer-replaceable components that are attached to your computer
If the computer still does not start up, call the Customer Support Center and a Customer Support Specialist
will assist you.

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. Wipe your computer dry with a paper towel.
4. Before turning on your computer, make sure that all the liquid has dried.
Note: If you want to replace your keyboard, contact the Customer Support Center. Refer to "Calling
Lenovo" on page 161.

Error messages

• Message: 0175: Bad CRC1, stop POST task.
Solution: The EEPROM checksum is not correct (block #6). Have the computer serviced.
• Message: 0177: Bad SVP data, stop POST task.
Solution: Checksum of the supervisor password in the EEPROM is not correct. The system board
should be replaced. Have the computer serviced.
• Message: 0182: Bad CRC2. Enter ThinkPad Setup and load Setup defaults.
Solution: Checksum of the CRC2 setting in the EEPROM is not correct. Press F1 to go to ThinkPad
Setup. Press F9 and then press Enter to load the default setting. Press F10 and then press Enter
to restart the system.
• Message: 0185: Bad startup sequence settings. Enter ThinkPad Setupand load Setup defaults.
Solution: Checksum of the startup sequence setting in the EEPROM is not correct. Press F1 to go to
ThinkPad Setup. Press F9 and then press Enter to load the default setting. Press F10 and then press
Enter to restart the system.
• Message: 0187: EAIA data access error.
Solution: The access to EEPROM is failed. Have the computer serviced.
.
Chapter 10 Troubleshooting computer problems
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