Casio IT-9000 Series Service Manual page 48

[8] Speaker
No
Select "[8].Speaker" from MENU-2 screen.
Speaker mode starts and a tone (3 kHz, 0.3sec. duration) is emitted in three volume levels,
"small", "medium" and "large" in that order. This loop is repeated two times.
Then buzzer mode starts and a buzzer tone (10 kHz, 0.3sec. duration) is emitted in three
volume levels, "small", "medium" and "large" in that order. This loop is also repeated two
times.
1
Then, the manual judgment screen appears.
If each tone is emitted correctly (OK): Press the "1" key to return to the menu screen.
If each tone is not emitted correctly (Failure): Press the "0" key to return to the menu
screen.
[9] Key Backlight
No. Operation
Select "[9].Key Backlight"
from MENU-2 screen.
1
Operation/Test Details
Display
Display
– 41 –
IT-9000
Test Details
When the "ENT" key is pressed,
the key backlight turns ON.
When the same key is pressed
again, it turns OFF.
Then, the manual judgment
screen appears.
If OK:
Press the "1" key to return to
the menu screen.
If any problem:
Press the "0" key to return to
the menu screen.