Casio DT-X200 Service Manual page 42

22. Full Range Imager Barcode Read
No.
Select "Start" - "Programs"
- "Utility" - "Imager Scanner
Demo".
Click one of the menu buttons;
Single Decode, Multi Decode.
1
For example, click the "Single
Decode" button and press the
Trigger key to read a barcode.
23. Howling Check
No.
"
Select
All Test MENU-5 screen.
Tip the
screen.
Note:
Place DT-X200/DT-X8 with LCD
facing up.
1
Operation
Operation
[0].Howling Check" from
"
Start" button on the
Display
Display
– 39 –
DT-X200/DT-X8
Test Details
The read image is displayed on
the screen.
Check that the image is read
correctly.
Click the "Exit" button at the
bottom left to close the screen.
Perform the test for both buttons:
Single Decode, Multi Decode.
The decode message, etc. are
displayed.
Test Details
Microphone records and, at the
same time, speaker outputs.
Be sure that no howling occurs.
No howling occurs (OK):
Press the "OK" button on the
screen. The screen returns to the
Menu screen.
Howling occurs (Failure):
Press the "Retry" button on the
screen.
Take an action according to the
retry results.
No howling occurs (OK):
Press the "OK" button on the
screen. The screen returns to the
Menu screen.
Howling occurs (Failure):
Press the "NG" button on the
screen. The screen returns to the
Menu screen.