FrancisFrancis FR380 User Manual

7-  

Fault Finding

All fault finding must be conducted by a competent person or qualified Electrical Engineer.

Causes:

1)  Power not supplied;

2)  Fuse blown;
3)  Failed lamp

Remedy:

1)  Check voltage at supply. If supply is not present the fault is at the customer supply. If power is

present, see remedy 2;

2)  Check fuse for visual failure. If none noticeable check fuse for continuity using a multi-meter. If

fuse found to be faulty, replace with new part and test equipment again for correct working
order. If found to be working correctly see remedy 3;

3)  Firstly, check supply at lampholder connecting block (within searchlight barrel). If supply is

present, disconnect unit from power supply before removing the lamp. If noticeable damage to

filament is present, the lamp will have failed. The lamp can also be checked for continuity using
a multi-meter. Replace lamp ensuring all precautions and instructions previously outlined in

this manual are adhered to.

Causes:

1)  Power not supplied;
2)  Faulty connections;

3)  Failed motor/transformer

Remedy:

1)  Check voltage at supply. If no supply present fault is at customer supply. If power is present

see remedy 2;

2)  Check all wiring connections on motor, transformer and terminal rail, in accordance with the

wiring diagram. If found to be correct, see remedy 3;

3)  Remove focus motor and apply 24v DC directly across terminals. If motor does not rotate the

unit has failed. A new focus motor should be fitted to the lampholder assembly. If the motor is

working correctly, check output of transformer (mounted in the Motor Gearbox).