mysql repair question

["pengyao" <xweiyao@xxxxxxxxx>]

hi,i have a question,such as:

mysql> select *  from test;
ERROR 1194 (HY000): Table 'test' is marked as crashed and should be repaired .

i think the "test" table was breakdown, so

mysql>check table test;
check | error    | Table upgrade required. Please do "REPAIR TABLE `test`" to fix it! 
mysql>repair table test;
| test | repair | Warning  | Incorrect string value: '\xBB\xA8\xBC\xE4\xC1\xBD...' for column 'test' at row 13 | 
mysql>check table test;
check | error    | Table upgrade required. Please do "REPAIR TABLE `test`" to fix it! 

what i can do? 
Thanks for your help!
                           
                                                                                              pengyao
                                                                                            2008-03-12