Epson equity ie q50188015-1 Manuel D’Utilisation

When the system device check is completed successfully, the computer checks

the timer and CMOS RAM. If the system clock has not been set, this

message is displayed:

161-Set date and time

The computer now begins to check the RAM installed in the main system

board. During the check, this message is displayed:

 OK

where 

XXX

 

indicates the amount of memory in which no malfunction is

found. This value increases continuously by 64KB up to the amount of
RAM installed on the main board, which is 640KB. If the computer detects

an error in the first 64KB area, an error message is displayed and the

computer halts with no further information.

If there are faulty RAM chips in your system, you see the following message:

20x-Memory error

The computer checks the keyboard controller and keyboard for problems such

as failure of one of the keys to release. If there are any errors in the connection

between the keyboard and computer, you see this error message:

301-Keyboard error

The computer next checks the video and video controller. If an error occurs,

you see one of these messages:

401-CRT error

501-CRT error