Digital Monitoring Products, Inc. | Troubleshooting Guide 15
If the panel is not communicating to the receiver within two attempts:
1
Check RJ-31X wiring for proper line seizure�
If phone line is shared with house-phones, fax machine or other equipment, proper line seizure is
a must� If the panel does not have line seizure and someone or something else is using the phone
line, the panel can’t use the line�
2
Use a butt-set connected to the panel’s RJ-31X to call the receiver phone number as programmed in
COMMUNICATION > RECEIVER 1 PROG� Is it a working phone number? If not, program the panel with the
correct phone number�
3
Send another System Test to the receiver to verify that the communication is taking place within two
attempts�
SYSTEM TROUBLE
1
Low or no (open) voltage on the Green wire of the keypad bus�
2
Reset jumper shorting both pins of the RESET header�
3
Processor failure�
SYSTEM BUSY
SYSTEM BUSY can mean that the panel is busy with other communication� Try to reset the panel� If the display does not
clear, SYSTEM BUSY can also mean that the panel’s microprocessor is damaged�
A few things to check:
1
Make sure the RESET header is not shorted�
2
Make sure the green wire (terminal 9) is not shorted to the ground or any other wire�
If that doesn’t clear the display, try this:
1
Check DC voltage across terminals 8 & 10� Check DC voltage across terminals 9 & 10�
If both measure at 5 VDC, reset the panel and check the voltages again�
2
If both voltages still measure at 5 VDC, remove panel ground and remove all wiring from terminals 7, 8, 9, &
10�
3
Reset the panel� Check data voltages�
If both voltages still measure at 5 VDC, replace the panel�
If voltages are correct now, begin replacing terminal 7, 8, 9, & 10 wiring� Be sure to check data
voltages after each wire is replaced�
By checking the voltages in this manner, you should be able to see when the voltage problem
occurs� When it does, the wire you just replaced is most likely to be the cause of the problem or a
device connected to that wire�
To Next Page
Loading...
Need help?
General