Sony Vaio PCG-F420 Service Manual page 20

19. 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.
20. 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.
21. Aging (Short time)
Executes the memory and main system tests repeatedly. It takes about fifteen minutes.
22. Aging (Long time)
Executes the memory and main system tests repeatedly. It takes about ten hours.
A. Audio test group
Tests the audio related items.
(1) Audio test (MIC test)
Tests microphone.
(2) Audio test (Speaker test)
Tests speaker.
B. Modem loopback test
Tests the data send/receive between modem and computer. The jig modem is necessary.
Connect the jig modem to the modem port of the PCG-F4 series VAIO.
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Confidential
PCG-F420/F480/F490 (UC)