To cause the computer to enter hibernation mode, do any of the following:
•Press the Fn+F12 keys.
•If you have defined one of the following actions as the event that causes the system to go into hibernation mode, perform that action.
–Closing the lid.
–Pressing the power button.
–Pressing Fn+F4 keys.
Also, the computer goes into hibernation mode automatically in either of the following conditions:
•If a “hibernation time” has been set on the timer, and if the user does not do any operation with the keyboard, the TrackPoint, the hard disk drive, the parallel connector, or the diskette drive within that time.
•If the timer conditions are satisfied in suspend mode.
When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard disk drive is read, and system status is restored from the hard disk drive.
Symptom-to-FRU index
This section contains following information:
•“Numeric error codes” on page 43
•“Error messages” on page 47
•“Beep symptoms” on page 48
•
•
•“Intermittent problems” on page 49
•“Undetermined problems” on page 50
The
Note: Do the FRU replacement or other actions in the sequence shown in the column headed “FRU or action, in sequence.” If replacing a FRU does not solve the problem, put the original part back in the computer. Do not replace a nondefective FRU.
This index can also help you determine, during regular servicing, what FRUs are likely to need to be replaced next.
A numeric error is displayed for each error detected in POST or system operation. In the displays, n can be any number.
If no numeric code is displayed, check the narrative descriptions of symptoms. If the symptom is not described there, go to “Intermittent problems” on page 49.
Note: For a device not supported by diagnostic codes in the ThinkPad Notebooks, see the manual for that device.
42ThinkPad X220 Tablet and X220i Tablet Hardware Maintenance Manual
