Fault Diagnosis
5-3
Revision 0.1 – 3 June 1999
FP12 DIMMER
USER MANUAL
5.6
Fault finding guide
FAULT SYMPTOM
POSSIBLE CAUSE
REMEDY
Breaker trips when desk channel
flashed to full or near full
Large incandescent load
Excessive load
Use console preheat facility
Reduce channel loading
Breaker trips after prolonged
operation
Excessive load
Lamp or wiring fault
Reduce channel loading
Check lamps and wiring
Breaker trips immediately when
channel is driven
Output short
Triac short
Check lamps and wiring
Factory service
One channel flickers when dimmed
Same load flickers on another
Channel
DMX source problem
Faulty dimmer channel
Insufficient or very inductive load
Softpatch another console fader
Service console
Factory service
Connect >100W incandescent
lamp in parallel
Radio interference
Faulty EMC filtering
Factory service
All Channels flicker when dimmed
Incorrect DMX protocol / wiring
Unterminated DMX line
Mains control tones exceed limits
Replace DMX source / wiring
Set Terminate switch on last
DMX receiver to TERM
Contact factory
Signal LED flickers
Faulty DMX wiring/connections
Faulty console
Faulty dimmer rack
Repair
Repair
Factory service
Status LED flashing
Over-voltage
Over-temperature
Check mains connection/supply
Improve dimmer cooling
Status LED on continuously
Recent over-voltage
Recent over-temperature
DMX control errors
Software failure
Check mains connection/supply
Improve dimmer cooling
Check DMX wiring, console
Factory service
No signal at DMX Loop output
Terminate switch set to TERM
Set Terminate switch to LOOP
Summary of Contents for FP12
Page 1: ...3...
