Lenovo S230U, 33472YU manual Wireless off mode, Symptom-to-FRU index, Numeric error codes

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.

Wireless off mode

In wireless off mode, the wireless features are turned off to conserve power. To turn off or turn on the wireless features, press F8.

Symptom-to-FRU index

This section contains following information:

•“Numeric error codes” on page 36

•“Error messages” on page 38

•“No-beep symptoms” on page 38

•“LCD-related symptoms” on page 39

•“Intermittent problems” on page 39

•“Undetermined problems” on page 39

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 39.

Note: For a device not supported by diagnostic codes in the ThinkPad notebook computers, see the manual for that device.

Numeric error codes

Table 2. Numeric error codes

Symptom or error	FRU or action, in sequence
0177	System board.
Bad SVP data, stop POST task—The checksum of the
supervisor password in the EEPROM is not correct.
0183	1. Run the ThinkPad Setup program, and then save
Bad CRC of Security Settings in EFI Variable. Enter the	current setting by pressing F10.
ThinkPad Setup program.	2. System board.
0187	System board.
EAIA data access error—The access to EEPROM is failed.
0188	System board.
Invalid RFID Serialization Information Area.

36Hardware Maintenance Manual