Theory of Operation

Power-Up Self-Tests

Power-Up Self-Tests

All of the power-up self tests are performed to verify the operation of the HP 16500B mainframe. If any of the self-tests fail, then the power-up routine is halted and the FATAL ERRORS ENCOUNTERED, BOOT HALTED message appears.

For more information about the individual self-tests, refer to "Self-Tests Description" later in this chapter.

If any power-up self-test fails, refer to chapter 5, "Troubleshooting."

Power-Up Tasks

During the power-up routine, messages on the screen display tasks that are being performed. The following paragraphs explain the tasks.

Loading System File

The operating system of the HP 16500B mainframe is being uploaded from the disk drive into system RAM.

SYSTEM DISK NOT FOUND appears only when the mainframe operating system cannot be found on the hard disk drive. The HP 16500B mainframe power-up routine will not go any further until a mainframe operating system is present and is recognized. In this case, remove power from the instrument and install the flexible disk containing the mainframe operating system in the flexible disk drive. When the System Configuration menu appears, the hard disk drive directory can be checked to see if the mainframe operating system is present and recognized and has the correct version number.

Loading Module Files

The operating system of each of the installed modules is being uploaded from the disk drive into system RAM.

The module operating systems are loaded beginning with the module in slot A, the top-most module. Then, the operating system of the module in slot B is loaded, and so on. Consequently, only the operating systems of the installed modules will be loaded into RAM.

The operating systems of modules not installed will not be uploaded from the disk drive.

The System Configuration menu will show if an installed module did not have its operating system loaded. The message UNRECOGNIZED MODULE appears in place of the module name next to the slot designations on the left side of the System Configuration menu.

Loading Software Options

Software options, for example the System Performance Analysis package, are being loaded into system RAM.

The Configuration menu of the module using the software options will show if the software option was installed. If the option was installed, it will appear in the module configuration menu pop-up. Refer to the User’s Guide the software option for more information.

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HP 16500B manual Power-Up Self-Tests, Power-Up Tasks, Loading System File, Loading Module Files, Loading Software Options