� LED test... Tests the LED. This test turns on one LED after another. The person conducting the test must visually check whether each LED is normal or not. � Main Memory test... Tests the main memory. The test is exited automatically when all test items end normally. � Main System test... Tests the fundamental functions of the CPU, etc. The test is exited automatically when all test items end normally. � FAN test... Tests the fan. Tests whether the fan rotates and stops. � Touch pad test... Tests the touch pad. Tests whether the cursor moves, and whether right-clicking and left-clicking function properly. � Serial loopback test... Performs the loopback test of the serial port. Connect the port replicator and the loopback tool to the serial port. � Parallel loopback test... Performs the loopback test of the parallel port. Connect the port replicator and loopback tool to the parallel port. � PC card Slot test... Tests the PC card slot. Implements the 16-bit/card-bus test for the two slots of the main unit. � Video test... Tests the video signal. Several video patterns appear every time the key is pressed. The person conducting the test must visually check whether the patterns appear properly. � PPK test... Tests the PPK. If the test is not completed within the specified time, an error is triggered due to the time-out set for this test. When two or more PPKs are set, follow the instructions that appear on the screen. � GUID (IEEE1394) test... Displays the GUID value, and judges whether the value on the display is appropriate.