15. Serial loopback test Tests the COM port. The serial loopback jig is necessary. Connect the serial loopback jig to the COM port. 16. USB test Tests the USB port. To perform this test, the USB jig is necessary. Connect the USB jig to the USB port. 17. Port Replicator connector test To perform this test, the port replicator and USB tester are necessary. 18. IrDA test Tests the IrDA communication. To perform this test, the PCG-505G series computer is necessary for communication. 19. Video test Tests the circuit blocks related to the video display. Tests the various video modes. A part of display is not shown as the video signal is displayed partly outside the screen in some tests of LCD (i.e., 1024 x 768 mode) when using the SVGA (800 x 600) displays. But this is normal. 20. IEEE1394 test Executes the data transfer test of the IEEE1394. 21. PPK test Tests the PPK. 22. Aging (Short time) HDD test Executes the memory and main system tests repeatedly including the HDD test. It takes about four hours. Contents of HDD are destroyed when this test is performed. 23. Aging (Long time) HDD test Executes the memory and main system tests repeatedly including the HDD test. It takes about ten hours. Contents of HDD are destroyed when this test is performed. 24. Aging (Short time) Executes the memory and main system tests repeatedly. It takes about fifteen minutes. 25. Aging (Long time) Executes the memory and main system tests repeatedly. It takes about ten hours.
