IBM 6862 - PC 300 PL, User Manual

Page: 130 / 208

POST Message Description
20X A failure occurred during testing of the memory. This error can be caused
by incorrectly installed memory, a failing DIMM, or a system-board failure.
Action:
1. If you have added memory, see Installing Options in Your Personal
Computer and Chapter 5, “Using the Configuration/Setup Utility
program” on page 61 of this booklet to verify that the new memory is
correct for your computer, and that it is installed and configured
correctly.
2. Run the diagnostic programs to verify the problem. (See “Diagnostic
programs” on page 136 for information about diagnostic programs
provided with your computer.)
If the problem cannot be isolated and corrected, have the computer
serviced.
301
303 A failure occurred during testing of the keyboard and keyboard controller.
These error messages also might be accompanied by continuous beeping.
Action:
Ensure that:
1. Nothing is resting on the keyboard and pressing a key.
2. No key is stuck.
3. The keyboard cable is securely attached to the keyboard connector on
the computer. (For the location of the keyboard connector, refer to
“External connectors” on page 14.)
Note: If you have just connected a new mouse or other pointing device,
turn off the computer and disconnect that device. Wait at least 5
seconds, and then turn on the computer. If the error message goes
away, replace the device. If the error message remains, have the
keyboard and cable or the computer serviced.
601 A failure occurred during testing of the diskette drive and diskette-drive
controller. This error can be caused by a loose or incorrectly connected
cable, a failing drive, or a failing system board.
Note: The computer can be used, but one or more diskette drives might
not work.
Action: Verify that all diskette drive cables are properly installed and
securely connected.
Running the diagnostic programs might isolate the diskette drive that
failed, but you must have your computer serviced. (See “Diagnostic
programs” on page 136 for information about diagnostic programs
provided with your computer.)
112
Using Your Personal Computer