IBM Aptiva 2159 Manual

Also see for Aptiva 2159: Hardware maintenance service

Changing Logical Unit NumbersIn some instances, you can have more than one logical unit number (LUN)for a particular module. LUNs represent individual devices within a testgroup or module. For example, you might have two diskette drives or twohard disk drives; or, you might have base, extended, shadow, and cachememory installed in the computer. This configuration might result in asmany as four or five different LUNs in the Memory Test Group. Or youmight have base, extended, shadow, and cache memory installed in thesystem which might result in as many as four or five different LUNs in theMemory Test Group.From either the Module Test Menu or the Test Group window, you canchange to a different LUN (where applicable) by pressing the plus (+) key(next LUN), or the minus (−) key (previous LUN).Test Group SpecificationsIn the upper-right-hand portion of the testing screen (or just the upper portionif you switched to an individual test group screen) are the specifications forthe related test group.Note: In the Hard Disk Test Group specification area, if a software programwas to compress your drive, the indicated size is the compressedsize of the logical drive.Module Testing ModeIf the easy test diagnostics programs do not find a problem, or you want toperform in-depth testing, the Module Testing mode provides a method to runindividual tests on a single module. For example, you can run an individualtest for the diskette drive, or you can run groups of tests for severalmodules.In the Module Testing mode, you can define how many times each testshould run and how the test program should log the errors.To start the Module Testing mode:1. Start the Diagnostics CD.2. Select Run Advanced Diagnostics from the Main Menu.3. Select Diagnostics from the Main Menu.4. Select Module Test from the next menu.5. Use the up and down arrow keys (↑ and ↓) to move the highlight barfrom one selection to the next.Diagnostic Aids 3-11