Symbol PDT 3400 Series Product Reference Manual page 120

PDT 3400 Product Reference Guide
Symptom
Cannot see characters on
display
Scanner does not come on
when Scan Bar pressed
Scanner does not decode a
bar code
No communication between
PDT 3400 and cradle
11-2
Table 11-1. Common Problems (Continued)
Possible Cause
PDT 3400 not powered on.
Contrast not adjusted properly. Press FUNC then X to darken
Unit powered up with battery
pack latch not secured.
Scanner not enabled
Bar code is unreadable
Scan window is dirty
Scan code not enabled
IrDA driver not loaded
PDT 3400 not seated properly Ensure 3400 is seated firmly in
PDT 3400's IrDA window is
dirty
Action
Press the PWR key.
the display or FUNC then Y to
lighten the display.
Ensure battery latch is closed
and reboot the PDT 3400.
Check the hex file image to
ensure all scanner software
components included in image.
Verify that the bar code is not
defective, i.e., smudged or
broken.
Clean scan window with lens
tissue such as would be used
with eyeglasses. Do NOT use
tissues with lotion!
Check with the programmer to
ensure the scan code is enabled
in the application.
Ensure the IrDA driver is loaded.
the cradle cup.
Clean the IrDA window on the
PDT 3400 and on the CRD/
VCD 34XX with a soft, damp
cloth.