Maintenance & Troubleshooting 8 - 13
Modem Module
During data 
communications, 
no data was 
transmitted, or 
transmitted data 
was incomplete.
MC9190-G detached 
from MSR during 
communications.
Reattach MC9190-G to MSR 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
.
Table 8-8
Troubleshooting the Magnetic Stripe Reader (Continued)
Symptom Possible Cause Action
Table 8-9
Troubleshooting the Modem Module 
Symptom Possible Cause Action
MC9190-G is 
not 
communicating 
through the 
modem.
The modem cable is not 
fully connected.
Connect the modem cable securely to both the modem and the 
telephone jack.
Modem is not securely 
connected to the 
MC9190-G.
Reconnect the modem firmly to the MC9190-G.
Communication software 
is not installed or 
configured properly.
Set up the communication software as described in 
Chapter 2, 
Accessories
.
Problem in the telephone 
lines.
Connect a conventional telephone and dial the remote modem to 
verify the telephone lines are functioning. If the remote modem does 
not answer the call and emit answering tones, contact the remote 
System Administrator.
MC9190-G’s battery is low 
or discharged, which shuts 
off power to the modem.
Install a charged battery in the MC9190-G, or use an external DC 
power adapter to recharge the battery.