Denso QK30-U, Руководство пользователя

Страница: 102 / 114

91
roubleshooting Chapter 12 T
Problem 1: Low reading efficiency.
Probable cause What to do:
 A target code is not within the scan range of  Bring a code within the scan range.
the scanning window.

The code may be smeared.

Wipe off the dirt from the code.
 Th ay be blurred.  Use a code clearly printed. e code m
Problem 2: Cannot read 2D codes or bar codes.
Probable cause What to do:
 The type of the code to be scanned has not
been set as a readable code.  Enable the type of the code to be scanned as a readable
code.

The scanned bar code contai
while the "Enable, with a check digit" ns no check digit,
parameter is selected.

Select the "Enable, without a check digit" parameter.
 Th
code is wrong.
 Use a correct bar code. e check digit contained in the scanned bar
Problem 3: Code data cannot be displayed normally on the computer screen. (USB-COM interface)
Probable cause What to do:
 The communications conditions of the scanner
are different from those of the connected host.  Change the communications conditions of the scanner to
match those of the connected host.

Any device driver other than our Active
USB-COM port driver may be used.

Use our Active USB-COM por
the USB-COM interface. t driver that is designed for
Problem 4: Code data cannot be displayed normally on the computer screen.
(USB keyboard interface)
Probable cause What to do:
 The keyboard type selected may not match one
that is set up in the host computer.  Select the same keyboard type as one that is set up in the
host computer.
(You can check the computer's keyboard type by clicking
My Computer | Control Panel | Keyboard | Hardware.)
 The Caps Lock state selected may not match
that of the connected keyboard.  Select the same Caps Lock state as that of
keyboard. the connected
 Any device driver other than the
system-supplied driver (USB device class
driver for HID) may be used.  Use the system-supplied driver.
 The computer's keyboard may be held down.  Do not press the computer's keyboard when scanning
codes.