Epson II+ Manuel D’Utilisation

first 64KB area, an error message displays and the computer halts with no
further information.

If there are faulty RAM chips in your system, you see one of these

messages:

202-Memory address error

203-Memory address error

If an I/O or parity error occurs, you see one of these messages:

Parity check 1

Parity check 2

The program also displays the number of the segment causing the problem.

The computer checks the keyboard controller and keyboard for prob-

lems such as failure of one of the keys to release.

If there are any errors in the connection between the keyboard and the

computer, this error message displays:

301-Keyboard error

When this message is preceded by a number (xx), the number represents the
key (in hexadecimal) that is the source of the error.

If another failure is found, you see one of these messages:

303-Keyboard or system unit 

error

304-Keyboard or system unit error

The computer checks the color or monochrome display card that is

installed in the system. An error number and message appear if any faults are

found in the display adapter card. Number 401 represents an error in the

monochrome display card, and 501 represents an error in the color display
card. The messages are:

401-CRT error

501-CRT error

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