Maintenance & Troubleshooting 7 - 9
Four-slot Spare Battery Charger
USB ActiveSync/Charge Cable
Table 7-4
Troubleshooting the Four-slot Spare Battery Charger 
Symptom Possible Cause Solution
Spare battery is not 
charging (Spare 
Battery Charging 
LED does not light).
Charger is not 
receiving power.
Ensure the power cable is connected securely to both the 
charger and to AC power.
Spare battery is not 
correctly seated.
Remove and re-insert the battery into the charger, ensuring it is 
correctly seated. 
Spare battery was 
removed from charger 
or charger was 
unplugged from AC 
power too soon.
Ensure charger is receiving power. Ensure the spare battery is 
seated correctly. If a battery is fully depleted, it can take up to 
five hours to fully recharge a battery.
Spare battery is faulty. Verify that other batteries charge properly. If so, replace the 
faulty battery.
Table 7-5
Troubleshooting the USB ActiveSync/Charge Cable 
Symptom Possible Cause Solution
MC21XX battery is 
not charging (LED 
Indicator does not 
light).
Cable is not receiving 
power.
Ensure the power cable is connected securely to both the 
cable and to AC power.
No battery installed. Install battery.
Battery is faulty. Verify that other batteries charge properly. If so, replace the 
faulty battery.
The MC21XX is not fully 
seated in the cable.
Remove and re-attach the MC21XX to the cable, ensuring it 
is correctly seated.
During data 
communication, no 
data was 
transmitted, or 
transmitted data was 
incomplete.
Cable removed from 
MC21XX during 
communication.
Reattach cable to MC21XX and retransmit.
Incorrect cable 
configuration.
See the system administrator or refer to the MC21XX Series 
MC21XX Integrator Guide.
Communication
software is not installed 
or configured properly.
See the system administrator or refer to the MC21XX Series 
MC21XX Integrator Guide.