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3 Tests and Diagnostics 3.17 Sound/LAN/Modem Test
3-46 PORTEGE A100 Maintenance Manual (960-460)
Subtest 02 Sign wave
This subtest is executed by loading Playwave. In this subtest, the control of the
sound volume can be also tested.
Connect headphones and make sure the sound (musical scale: do, re, mi, fa, so, la,
si, do) is come out from the right and left headphones.
Subtest 03 LAN
This subtest checks the operation of mini-PCI I/F by the loopback in the chip.
The large “OK” is displayed if no error occurred.
Subtest 04 MODEM
For this subtest, connect the modem PCB and RJ11 connector with a harness. This
subtest contains the following tests. They are tested with the dedicated “FAT-
MODE inspection device (Product Code QE2000P01 made by Nittou Denki
Seisakusyo).
• Scorpio Modem Initialize
• Digital Loopback Test
• Modem Sound Test
• External Loopback test
• RJ11 Connector Test (LED)
To finish the Sound/LAN/Modem Test the computer power should be off.