IBM 2274 manual Power-On Self Test

Power-On Self Test

Each time you power-on the system, the power-on self test (POST) is initiated. Several items are tested during POST, but is for the most part transparent to the user.

POST checks the following:

•	System Board	•	Mouse
•	Memory	•	Parallel Port(s)
•	SVGA Controller	•	Serial Port(s)

•Hard Disk Drive(s) • CD/DVD-ROM Drive(s)

•	Floppy Diskette	• Sound Controller*
	Drive(s)
•	Keyboard

To start POST, turn on the monitor and then the system unit. The following will happen:

1.The IBM Personal Computer logo will appear on the screen.

2.At this time one of two hot-keys may be used. The F1 key will cause the system Configuration/Setup Utility menu to appear. The F9 key will switch the graphical IBM logo screen to the traditional text- based system startup screen, which displays BIOS version and system memory tested. For Personal Computer Type 2274, the F9 key will only work after exiting Configuration/Setup Utility.

3.If an error is detected during POST, the IBM logo screen will automatically switch to the text-based screen and display the error message or code with a beep. Depending on the criticality of the POST error, the system may halt and/or display the message “Press <F1> to enter to the Setup or <Enter> to continue...”

If this message appears, pressing the Enter key will allow the system to attempt to proceed despite the reported error; pressing F1 will cause the system Configuration/Setup Utility menu to appear.

Diagnostic Aids 79