Hioki ST5540, Instruction Manual, Page: 130 / 326

7.6 Self-Test
124
7.6 Self-Test
1.
Press on the initial screen to display the system screen.
2.
Press to display the self-test screen.
3.
Select a self-test item.
Checks internal SRAM
(Static RAM : read/write memory for data
backup) of the HiTESTER.
Checks the keys.
Checks the LCD panel condition.
Checks the beep sound.
Checks the LED lamps, warning lamp, and
LCD panel backlight.
Self-test screen
When is selected
The screen shows " RAM TEST OK! "
Press to return to the system screen.
If the screen shows " RAM TEST NG! ", the instrument
is malfunctioning.
Contact your dealer or Hioki representative.
When is selected
The screen shows 12 black keys. Press these keys one by
one.
When a key is pressed, it turns white. When all the keys
are pressed one after another, display returns to the self-
test screen.
If a key does not change to white even after repeated
pressing, the key may be malfunctioning. Contact your
dealer or Hioki representative.