8. LED test Check that the LEDs start illuminating from the left of the LEDs. 9. Main memory test Tests the memory. 10. Main system test Tests the entire system including CPU, MATH and DMA. 11. Touch pad test Tests the touch pad. Move the cursor inside the white square mark ( instruction displayed. 12. Parallel loopback test Tests the parallel port. The jig is necessary. Connect the supplied FDD cable to the connector of FDD, and connect the tool to the parallel port at the rear side of the FDD cable. 13. PC Card test Tests the PC card. The PC card tester jig is necessary. Insert and remove the PC card tester in accordance with instruction displayed. 14. IEEE1394 Interface test Tests the IEEE1394 communication. 15. Dock PCI connector test Tests the parts related to the PCI signal wire of the connector form docking of the PCG-XG18. Set the PnP to "No" on the Bios Setup screen. To perform this test, the Mini Docking Station is necessary. 16. IrDA test Tests the IrDA communication. To perform this test, the PCG-X series computer is necessary for communication. 17. Video test Tests the circuit blocks related to the video display. Output image from the VGA-OUT connector for test. NTSC television is necessary. Connect the VGA-OUT connector and the NTSC television to confirm that color bars appear. 18. GUID check Display GUID. 19. Mulitipurpose bay switch test Tests the switch of mulitipurpose bay. 20. Jogdial test Tests the jogdial. ) and operate the system in accordance with