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OptiPlex G1の取扱説明書・マニュアル [全174ページ 1.59MB]

Dell Diagnostics: Dell OptiPlex GX1 Small-Form-Factor System User's Guidefile:///C|/infodev/2013/eDoc/OpGX1/UG/diag.htm [2/21/2013 11:47:14 AM]Why Run a RAM Test?Faulty memory can cause a variety of problems that may not, at first glance, appear to be happening in RAM.If your computer is displaying one or more of the following symptoms, run the subtests in the RAM TestGroup to verify that the memory is not at fault:A program is not running as usual, or a proven piece of software appears to malfunction and youconfirm that the software itself is not at fault. (You can confirm that the software is functioning properlyby moving it to another computer and running it there.)Your computer periodically locks up (becomes unusable and must be rebooted), especially at differentplaces and times in different programs.You get parity errors (any error message that contains the word parity) at any time during operation.These errors are usually accompanied by a reference to an address-the location of the portion ofmemory where the error occurred-which you should record on a copy of the Diagnostics Checklist.System Set Test GroupThe subtests in the System Set Test Group check the computer's basic system board components andverify their related functions.The subtests that constitute the System Set Test Group and the computer functions they confirm follow:CMOS Confidence TestChecks the NVRAM for accessibility and reliability of data storage by performing a data patterncheck and verifying the uniqueness of memory addresses.CMEM Confidence TestVerifies the accessibility and reliability of the 8 kilobytes (KB) of RAM on the Extended Industry-Standard Architecture (EISA) Configuration RAM chip, which stores the EISA hardwareconfiguration information. On systems without flash RAM, performs a data pattern and addressuniqueness test.NOTE: This test applies only to systems with an EISA bus.DMA Controller TestTests the direct memory access (DMA) controller and verifies the correct operation of its pageand channel registers by writing patterns to the registers.Real-Time Clock TestConfirms the functionality and accuracy of the computer's real-time clock (RTC).System Timers TestChecks the timers used by the microprocessor for event counting, frequency generation, andother functions. Only the functions that can be activated by software are tested.

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