Symptom-To-Fru Index; Numeric Error Codes - Lenovo ThinkPad X1 Hardware Maintenance Manual

– 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 42
• "Error messages" on page 44
• "Beep symptoms" on page 44
• "No-beep symptoms" on page 45
• "LCD-related symptoms" on page 45
• "Intermittent problems" on page 45
• "Undetermined problems" on page 46
The symptom-to-FRU index in this section lists symptoms and errors and their possible causes. The most
likely cause is listed first, in boldface type.
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 45.
Note: For a device not supported by diagnostic codes in the ThinkPad notebooks, see the manual for
that device.

Numeric error codes

Table 2. Numeric error codes
Symptom or error
0177
Bad SVP data, stop POST task—The checksum of the
supervisor password in the EEPROM is not correct.
0182
Bad CRC2. Enter ThinkPad Setup and load Setup
defaults.—The checksum of the CRS2 setting in the
EEPROM is not correct.
42
Hardware Maintenance Manual
FRU or action, in sequence
System board.
1. Run the ThinkPad Setup program. Press F9, and
Enter to load the default setting. Then save the
current setting by pressing F10.
2. System board.