Cornell 4800 series, Installation Manual

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Cornell Communications, Inc
4800 Installation Manual 07-31-18
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4800 System Troubleshooting
The 4800 System is shipped from the factory fully programmed and tested with the local site information that
was provided by a Cornell Communications dealer. If you have any difficulties with the installation, consult the
troubleshooting chart below.
Control Panel Symptoms Resolutions
•
Power LED off Confirm 24VDC system power at J10 terminal.
•
Control Panel “Fault” is displayed Confirm phone line is connected.
•
Display is “Dim” The display reduces brightness automatically.
•
No “Dial Out” of phone message No phone line or connection.
System must be programmed to call “Off Site”
Call Stations Resolutions
•
No 10 second LED flash Confirm station wiring.
Stations do not operate below 18VDC
•
Station activation shows Station is not programmed into system.
00:21:c3:00:00:XX
The 4800 system device connections are fully supervised. Any Control Panel, Expansion Switch, or Call Station
that is programmed into the system, will display a “Fault”, at the Control Panel(s), if they lose power, are
damaged, or disconnected from the circuit.
*All “Fault” indications must be manually cleared from the system, upon repair of the defective device. To clear
all faults, press the “Clear All Calls” button twice, at the Main Control Panel. The “Clear All Calls” function only
functions from the Control Panel designated as the “Main Control Panel” in the system.
Power Supplies
The B-5248A and B-5243B have the same safety features as outlined below. Confirm proper 24VDC is available
to the 4800 system. Both supplies provide an average of 26 to 27VDC, in order to charge the battery circuit, and
are normal operating voltages. Each supply includes (2) 12V 7ah batteries.
•
PTC Class 2 protected outputs.
•
Short circuit/Overload protection.
•
AC/DC power LED indicators.
•
AC/DC fail relays.
Refer to the individual manuals included with the power supplies.