Symbol PDT 8100 Series Product Reference Manual page 277

Table 12-1. Troubleshooting The Terminal (continued)
Problem
System is reporting that the
main battery is unknown (in
Start - Settings - System tab -
Power).
Note: Under normal operating
conditions, the battery is
unknown for approximately
10 - 15 seconds after powering
on, cold booting, or warm
booting the terminal. This state
occurs while the terminal is
waiting for a stable reading from
the battery.
Rechargeable lithium-ion
battery did not charge.
Cannot see characters on
display.
Fail to communicate with IrDA
printer.
Cause
Terminal is too hot or cold to
charge the battery.
Battery charging circuit is in a
fault condition.
Battery failed.
Terminal removed from cradle
while battery was charging.
Terminal not powered on.
Distance from printer is more
than 1 meter (39 inches).
Obstruction interfered with
communication.
Application is not enabled to run
IrDA printing.
Maintenance and Troubleshooting
Solution
The charger was turned off
because charging the battery
when it is too hot or cold can
damage the battery. Move the
terminal to a more temperate
location.
Probable cause is a failed
battery. Replace with a new
battery from Symbol.
Replace battery. If the terminal
still does not operate, try a soft
reset, then a hard reset; see
Resetting The Terminal
2-34.
Insert terminal in cradle and
begin charging. The lithium-ion
battery requires up to 2.5 hours
to recharge fully.
Press the Power button.
Bring the terminal closer to the
printer and attempt
communications again.
Check the path to ensure no
objects were in the way.
Printer support must be
included with the application to
run IrDA printing on the
terminal. See your System
Administrator.
on page
12-5