
Maintenance & Troubleshooting 13 - 5
Troubleshooting
ES400
Table 13-1
Troubleshooting the ES400
Problem Cause Solution
ES400 does not turn
on.
Battery not
charged.
Charge or replace the battery in the ES400.
Battery not installed
properly.
Install the battery properly. See Installing the Battery on page 1-5.
System crash. Perform a reboot. See Resetting the ES400 on page 2-21.
Battery did not
charge.
Battery failed. Replace battery. If the ES400 still does not operate, perform a
reboot. See Resetting the ES400 on page 2-21.
No power to cradle
or cable.
Ensure that power is applied to the cradle or cable. The Battery
Status LED flashes green to indicate that the ES400 is charging.
ES400 removed
from cradle while
battery was
charging.
Place the ES400 into the cradle. The 1540 mAh battery fully
charges in less than three hours and the 3080 mAh battery
charges in less than six hours.
Extreme battery
temperature.
Battery does not charge if ambient temperature is below 0°C
(32°F) or above 40°C (104°F).
ES400 not
functioning.
Perform a reboot. See Resetting the ES400 on page 2-21.
Cannot see
characters on display.
ES400 not powered
on.
Press the Power button.
During data
communication, no
data transmitted, or
transmitted data was
incomplete.
ES400 removed
from cradle or
disconnected from
host computer
during
communication.
Replace the ES400 into the cradle, or reattach the USB Rapid
Charging cable and re-transmit.
Communication
software was
incorrectly installed
or configured.
Perform setup. See to ActiveSync on page 12-11 for details.
No sound. Volume setting is
low or turned off.
Adjust the volume. See Adjusting Volume on page 2-19.
ES400 shuts off. ES400 is inactive. The ES400 turns off after a period of inactivity. See Power & Radio
on page 2-15 for more information.
Battery is depleted. Recharge or replace the battery.
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