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1. Open the corresponding test category.
2. Using the cursor movement keys, highlight the desired test.
3. Press the space bar. A selected test is marked by >>. Pressing the space bar again de-selects a test
and removes the >>.
4. Repeat steps 2 and 3 above to select all desired tests.
Test results
Diagnostics test results produce the following error code format:
Function Code
Failure Type DeviceID Date
ChkDigits
Text
• Function Code:
Represents the feature or function within the PC.
• Failure Type:
Represents the type of error encountered.
• DeviceID:
Contains the component's unit-ID which corresponds to either a xed disk drive, removable media drive,
processor, specic RIMM, or a device on the PCI bus.
• Date:
Contains the date when the diagnostic test was run. The date is retrieved from CMOS and displayed
using the YYYYMMDD format.
• ChkDigits:
Contains a 2-digit check-digit value to ensure the following:
– Diagnostics were run on the specied date.
– Diagnostics were run on the specied computer.
– The diagnostic error code is recorded correctly.
• Text:
Description of the error.
Note: See “Diagnostic error codes” on page 48 for error code listings.
Quick and Full erase - hard drive
The diagnostics program offers two hard drive format utilities:
• Quick Erase Hard Drive
• Full Erase Hard Drive
The Quick Erase Hard Drive provides a DOS utility that performs the following:
• Destroys the Master Boot Record (MBR) on the hard drive.
• Destroys all copies of the FAT Table on all partitions (both the master and backup).
• Destroys the partition table.
• Provides messages that warn the user that this is a non-recoverable process.
The Full Erase Hard Drive provides a DOS utility that performs the following:
• Performs all the steps in Quick Erase.
• Provides a DOS utility that writes random data to all sectors of the hard drive.
• Provides an estimate of time to completion along with a visual representation of completion status.
• Provides messages that warn the user about non-recoverable process.
40 ThinkCentre Hardware Maintenance Manual