IBM Aptiva 2161, Manual

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Noncritical malfunctions cause incorrect results that might not be apparent to
the user. An example of a noncritical error is a memory module failure. If a
noncritical error occurs, an error code is displayed, and the testing is
stopped. Testing can be continued on a noncritical error by pressing the
Esc key.
After a successful POST (one in which no critical errors were detected), a
single short beep is generated. The system attempts to load an operating
system. The system can be customized for different start (boot) methods.
The system’s default startup sequence automatically looks for the operating
system files on the hard disk if the files are not found on diskette.
Note: Remember that the POST does not test all areas, but only those that
allow the system to operate well enough to run the Diagnostics and Utilities
program.
Repair Information
This chapter contains removal and replacement instructions.
Parts/Test Point Locations
This chapter contains system board layouts and jumper settings. It is useful
when you are asked to measure voltages. Use this information to help you
locate parts such as electronic boards, connectors, pin numbers, and test
points. This chapter also contains jumper and dual in-line package (DIP)
switch settings for modems, and jumper settings for the hard disk drive,
CD-ROM (compact disc–read-only memory) drive, and sound adapter card.
Safety Inspection Guide
This chapter contains guidelines to help you identify possible safety
concerns. Use this information to inspect a machine for safety problems
before putting the machine under a Maintenance Agreement.
Parts Catalog
This catalog includes figures, part numbers, and part names. It also
contains detailed system board descriptions.
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Machine Type 2161 - Service Level A Aptiva HMS