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15 Trouble Shooting
Prior to conducting any trouble shooting checks it is desirable that the status of any abnormal
condition is recorded.
Fault/Status
Mains On Indicator
Is Off
System
On
Batteries.
Charger Fault
Battery
Fault
Indicator On After
24 Hours.
Battery Isolate.
Signal Fault.
Signal Fault Comes
On Intermittently
Comms
Fault
(Steady)
Comms
Fault
(Flashing)
Cause
Mains At Dist Board Off.
Mains Switch Off.
Cn1 On M.C.P.
Cn6 On PSU Mother Brd Discon'd.
Mains Fuse Blown.
Mains At Dist Board Off.
Mains Power Failure.
Mains Switch Off.
Mains Fuse Blown.
Mains Fail.
High Volts:
Charger Output Volts Above 28.5 Volts.
Voltage Normal At 28.5 Volts.
Low Volts:
Charger Output Volts Below 24.5 Volts.
Batteries Fault.
Voltage Normal At 24.5 Volts.
Battery Disconnected OR Battery Isolate.
Battery Voltage Below 24.5 Volts.
Low Electrolyte.
Main D.C. System Fuse.
Battery Cable Loose Or Disconnected.
PCB Signal Gen Not Plugged In Correctly.
DC Distribution Fuse Blown On Rear Of
Common Board Frame.
Synthesiser Fault.
Signal Levels Too Low.
Code Set On Dip Switch On Signal Generator
For Message Length Incorrect
Evac Or Alert Signal Levels Too Low
Section Of The RS 485 Loop Bus Faulty Or
Disconnected From Module.
(Cn13 And Cn14 Of Processor Brd)
Interruption or short on the EWS or EIS audio
bus
MAN1813-9
Solution
Turn Power On.
Turn Mains Switch On.
Plug In Correctly.
Plug In Correctly.
Replace Fuse.
Turn Power On, Check For Main On
Indicator When Power Is Returned.
Turn Mains Switch On, Replace Fuse.
Ref Mains On Ind And System On
Batteries. Fault Status.
Replace Charger Module On Power
Supply.
Replace Supervisory Card On P/S.
Replace Charger Module On Power
Supply.
Replace Batteries.
Replace Supervisory Card On P/S.
Connect Batteries.
Replace Batteries.
Top Up Batteries.
Plug In Correctly Or Replace Fuse.
Check Connections.
Plug PCB In.
Replace Fuse 1 Amp.
Replace BRDEV3TG / 154-0076 Tone
Generator.
Adjust Signal Levels.
Set Dipswitch To Correct Code.
Readjust Signal Levels.
Check Section And Termination Or
Field Wiring. Check Internal Comms
Connections. Ensure All Modules Are
Plugged In. Ensure Modules Installed
In Correct Order.
Inspect wiring and rectify as required
46
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