Maintenance & Troubleshooting 8 - 13
MC75A battery is not 
charging.
MC75A was 
removed from MSR 
or MSR was 
unplugged from AC 
power too soon.
Ensure MSR is receiving power. Ensure MC75A is attached 
correctly. Confirm main battery is charging under 
Start
 > 
Settings
 > 
Power
.
Battery is faulty. Verify that other batteries charge properly. If so, replace the faulty 
battery.
The MC75A is not 
fully attached to the 
MSR.
Detach and re-attach the MSR to the MC75A, ensuring it is firmly 
connected.
During data 
communication, no 
data transmits, or 
transmitted data was 
incomplete.
MC75A detached 
from MSR during 
communications.
Reattach MC75A to MSR and retransmit.
Incorrect cable 
configuration.
See the system administrator.
Communication 
software is not 
installed or 
configured properly.
Perform setup as described in the MC75A Integrator Guide.
Table 8-8    
Troubleshooting the Magnetic Stripe Reader (Continued)
Symptom Possible Cause Action