Monochrome Adapter Check; Attribute Check; Character Set Check - Epson 20 User Manual

You can select the individual checks from this menu:
MONOCHROME DISPLAY ADAPTER AND CRT CHECK
MENU

1 - Monochrome adapter check

- Attribute check

2

3 - Character set check

4 - Video check
5 - Sync check
6 - Run all above checks
0 - Exit
Enter selection number:
If an error occurs during any of these tests, record the error code and
message, or print them out. Then contact your Epson dealer or
service center.
Monochrome Adapter Check
To check the monochrome adapter, press
computer checks the video RAM (display memory) on the display
adapter by writing certain data to memory, then reading it back and
comparing it to the written data. The computer also tests the video
enable signal of the display controller chip.
Attribute Check
To check the display attributes of the adapter card, press 2 and then
A series of messages appear showing examples of all the
Enter.
possible display attributes (normal intensity, high intensity, blinking,
reverse, and underlining). Check the information that appears on
your screen, and then respond to the prompt:
Is the display correct (Y/N)?
Press Y and then
attributes are not correct, adjust the brightness and contrast on your
monitor. If they are still incorrect, press
C-IO Performing System
if the display is correct. If the display
Enter
Diagnostics
and then
1 Enter.
and
N Enter.
The