Casio DT-X100 Series, Service Manual

Page: 48 / 82

— 45 —
5-4. Function Test
5-4-1. RAM
No Operation Display Test Details
1
Select [SDRAM]. The increment data is written to, read
from and then compared with the
maximum possible SDRAM area.
If OK:
The screen returns to the Menu screen.
If any problem:
The failed addresses, correct data and
wrong data are displayed.
 Pressing the “ENT” key returns you
to the Menu screen.
5-4-2. ROM
No Operation Display Test Details
1
Select [FLASH-ROM]. Checksum of storage areas for
BootSelector/SYSBoot/OSLoader/OS is
calculated and automatically checked.
Also, 64KB
fi les are written, read and
compared.
If OK:
The screen returns to the Menu screen.
If any problem:
An error indication is displayed.

Pressing the “ENT” key returns you
to the Menu screen.
5-4-3. Key
No Operation Display Test Details
1
Select [Key]. Press all keys in sequence.
The pressed keys appear inverted on the
screen.
(Attention)
To test the “FN” key function, press the
button twice.
Once every key is pressed, the screen
returns to the Menu screen.
Pressing the “ENT” key twice in the
middle stops the test and returns you to
the Menu screen.