我有一顆IBM硬碟40G：S/N：TXTSY906；P/N：07N6654，我上網連上http://www.hgst.com/portal/site/hgst/?epi_menuItemID=c0b801be666736fe25ad4e8060e4f0a0&epi_menuID=e41fff51ec9a8f8d5f5a530560e4f0a0

我的硬碟在保固期內，我趕緊辦理送修手績，但是網頁內容出現：
Check RMA status

Status check inputs > RMA does not exist

RMA status information was not found for the hard disk drive serial number entered. Please verify that your inputs are correct. If you know the RMA number, you may use it to check the RMA status.

請問大大們知道什麼原因呢？謝謝指教！