Acer 721TX Service Guide - Page 97

Symptom-to-FRU Index The symptom-to-FRU index lists the symptoms and errors and their possible causes. The most likely cause is listed first. Note: Perform the FRU replacement or actions in the sequence shown in the "FRU/Action" columns. If a FRU replacement did 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 the next possible FRU to be replaced when servicing a computer. Numeric error codes show the errors detected in POST or system operation. If no codes are available, use narrative symptoms. If the symptom is not listed, go to "Undetermined Problems". Numeric Error Codes The following is a list of the messages that the BIOS can display. Most of them occur during POST. Some of them display information about a hardware device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the way it has been configured. Following the list are explanations of the messages and remedies for the reported problems. Note: If the system fails after you make changes in the Setup menus, reset the computer, enter Setup and install Setup defaults or correct the error. Symptom / Error 0200 Failure Fixed Disk 0211 Stuck Key 0211 Keyboard error 0212 Keyboard Controller Failed 0213 Keyboard locked - Unlock key switch FRU / Action in Sequence 1. Reseat Hard disk driver. 2. "Load Setup Defaults" in BIOS Setup Utility. 3. Hard disk driver 4. System board Go to "Keyboard or Auxiliary Input Device Checkout". Go to "Keyboard or Auxiliary Input Device Checkout". Go to "Keyboard or Auxiliary Input Device Checkout". Unlock external keyboard Chapter 4 89