10 - 8 MC909X Integrator Guide
Single Slot Serial/USB Cradle
Table 10-6    
Troubleshooting the Single Slot Serial/USB Cradle
Symptom Possible Cause Action
LEDs do not light 
when mobile 
computer or 
spare battery is 
inserted.
Cradle is not receiving 
power.
Ensure the power cable is connected securely to both the cradle 
and to AC power.
Mobile computer is not 
seated firmly in the 
cradle.
Remove and re-insert the mobile computer into the cradle, ensuring 
it is firmly seated. 
Spare battery is not 
seated firmly in the 
cradle.
Remove and re-insert the spare battery into the charging slot, 
ensuring it is firmly seated. 
Mobile computer 
battery is not 
charging.
Mobile computer was 
removed from cradle or 
cradle was unplugged 
from AC power too soon.
Ensure cradle is receiving power. Ensure mobile computer is seated 
correctly. Confirm main battery is charging. If a mobile computer 
battery is fully depleted, it can take up to four hours to fully recharge 
a battery (if the mobile computer is off and longer if the mobile 
computer is operating).
For Windows Mobile 5.0 devices, view battery status by tapping 
Start
 > 
Settings
 > 
System
 tab > 
Power
 icon.
For WinCE 5.0 devices, view battery status by tapping 
Start
 > 
Settings
 > 
Control Panel
 > 
Power
 icon.
Battery is faulty. Verify that other batteries charge properly. If so, replace the faulty 
battery.
The mobile computer is 
not fully seated in the 
cradle.
Remove and re-insert the mobile computer into the cradle, ensuring 
it is firmly seated. 
Spare battery is 
not charging.
Battery not fully seated in 
charging slot. 
Remove and re-insert the spare battery into the cradle, ensuring it is 
firmly seated. 
Battery inserted 
incorrectly. 
Ensure the contacts are facing down and toward the back of the 
cradle. 
Battery is faulty. Verify that other batteries charge properly. If so, replace the faulty 
battery.
During data 
communications, 
no data was 
transmitted, or 
transmitted data 
was incomplete.
Mobile computer 
removed from cradle 
during communications.
Replace mobile computer in cradle and retransmit.
Incorrect cable 
configuration.
See the System Administrator.
Communications 
software is not installed 
or configured properly.
Perform setup as described in 
Chapter 2, Accessories
.
Ensure that Microsoft ActiveSync 4.1 or greater is installed on the 
host computer.