Symbol PDT 7500 Series Product Reference Manual page 137

Symptom
Scanner does not decode a
bar code.
Battery life is inadequate.
The Imager is having trouble
reading symbols.
Table 11-1. Terminal Problems (Continued)
Possible Cause
Bar code is unreadable.
Scan window is dirty.
Symbology not enabled.
Battery pack not fully charged. Charge the battery pack, either
Battery pack is old.
Terminal being used in low-
temperature conditions.
Unnecessary peripherals
draining power.
The application is not designed
for efficient power use.
Symbology disabled.
Damaged symbol.
Improperly aligned symbol.
Maintenance and Troubleshooting
Action
Verify that the bar code is not
defective, i.e., smudged or
broken.
Clean scan window with a lens tis-
sue. Tissues for eyeglasses work
well. Do not use tissues coated with
lotion.
Verify with the programmer that
the application is designed to
perform scanning.
in the terminal for 2 hours or
separately for 5 hours.
Replace with a fresh, fully
charged battery pack.
Battery life is shortened if used
in extremely cold conditions.
Disconnect any peripherals not
used to reduce the drain on the
battery pack. (For example,
disable the scanner when it is not
being used.)
Consider using power
management services provided
in the Symbol Windows CE SDK
to reduce drain on battery pack.
Ensure the radio is at maximum
power saving mode.
Check that the symbology is en-
abled.
Be sure the symbols aren't damaged
or coated with frost or water drop-
lets.
Be sure the symbol is completely
within the aiming pattern.
11-5