
30
IdeaPad Y450 Hardware Maintenance Manual
Symptom-to-FRU index
This section contains the following information:
•
“Numeric error codes
” on page 30
•
“Error messages
” on page 33
•
“Beep symptoms
” on page 36
•
“No-beep symptoms ” on page 36
•
“LCD-related symptoms” on page 37
•
“Intermittent problems
” on page 38
•
“Undetermined problems” on page 38
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 38.
Note:
For a device not supported by diagnostic codes in the Lenovo IdeaPad computers,
see the manual for that device.
Numeric error codes
Table 1. Numeric error codes
Symptom or error
FRU or action, in sequence
0200
Hard disk error—The hard disk is not
working.
1.
Reseat the hard disk drive
.
2. Load Setup Defaults in BIOS Setup
Utility.
3. Hard disk drive.
4. System board.
021x
Keyboard error.
Run interactive tests of the keyboard
and the auxiliary input device
.
0220
Monitor type error—Monitor type does
not match the one specified in CMOS.
Load Setup Defaults in BIOS Setup
Utility
.
0230
System RAM error—System RAM fails
at offset nnnn.
1.
DIMM
.
2. System board.
0231
Shadow RAM error—Shadow RAM fails
at offset nnnn.
System board
.