Epson 100 User Manual

Power-on Diagnostics

The built-in memory (ROM) of your computer contains a

series of diagnostics programs, which your computer runs

automatically every time you turn on the power. These

programs check internal devices such as ROM, RAM, the

timer, the keyboard controller, and the diskette drives.

When you turn on the power, the computer performs the tests

described in this appendix. If it finds an error, it displays a
specific error number and error message on the screen.

If the error is serious, the computer cancels further checking
and halts system initialization. The error message remains on

the screen, and you can no longer operate the computer. If this

happens, contact your Customer Care Center as soon as
possible. Report both the error message and code number.

If the error is not serious, the computer waits for you to resume

further checking. You see this prompt:

F1 key to resume

Write down the error message and code number, and then press

F1 to resume. Report the error message and code number to

your Customer Care Center when requesting repairs.

The computer first checks its internal devices, such as ROM. If

it finds a malfunction, it displays an error message. In some

cases, the computer may halt with no further information.

Power-on Diagnostics C-1