Lenovo ThinkPad X1 Hardware Maintenance Manual - Page 48

Symptom-to-FRU index, Numeric error codes, Pressing Fn+F4 keys.

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- 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. 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. 42 Hardware Maintenance Manual

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–
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
FRU or action, in sequence
0177
Bad SVP data, stop POST task—The checksum of the
supervisor password in the EEPROM is not correct.
System board.
0182
Bad CRC2. Enter ThinkPad Setup and load Setup
defaults.—The checksum of the CRS2 setting in the
EEPROM is not correct.
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.
42
Hardware Maintenance Manual