Power-On Self Test - IBM 5170 Installation And Setup

Power-On Self Test
Every time your system unit's power is turned on it
does a Power-On Self Test (POST). The POST checks
various internal parts to verify that they are working
properly.
Note: If you are using your home television or
composite display, it must be U.S. television system
(NTSC) compatible. Your display or TV may also
cause you to experience data errors while using your
diskette or disk drive. You can correct this
interference by moving your display or TV a
minimum of 305 mm. (12 in.) away from your IBM
Personal Computer AT.
1
Rotate the diskette drive lever counterclockwise.
Diskette Drive A
Diskette Drive Lever
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POST 7-3