VARI
❋
LITE - VL440 / VL770 / VL880 S
POT
L
UMINAIRES
S
ERVICE
M
ANUAL
1 6
0 2 . 9 6 8 7 . 0 0 1 0 0
Troubleshooting Guide
If a problem is suspected, try recalibrating the luminaire to prompt an error message. Refer to
for more information. The chart below provides possible causes and remedies
for various error messages and/or symptoms.
Table 2-1: Troubleshooting Guide
Message
Symptom
Description
Possible Cause/Remedy
Lamp
Power
Douse
Lamp does not strike
upon start-up
Lamp Off option is config-
ured
- Reconfigure lamp startup option in Lamp config
menu.
n/a
Lamp douses frequently
Lamp Douse
Fan failure...
- check head and enclosure fans for proper
operation.
Ballast overheating...
- operating within the specified ambient
temperature?
- check enclosure vents for debris / dirt.
- check fan settings in menu.
- check enclosure fans for proper operation.
NOTE: Upon initial power up, ballast fans will run for
a few seconds and then operate as needed.
Enclosure vents must be clear of debris and dirt to
allow proper airflow.
n/a
Lamp will not strike
Lamp Strike Failure
Lamp cutout switch disengaged...
- check lamp cutout switches at lamp box and fan
ducts.
Bad lamp...
- replace lamp.
Low input voltage...
- check input power (must be 100 to 240 VAC).
n/a
Luminaire behaves
oddly
Profile Not Matched
Profile not set correctly...
- check Setup menu for correct type (console patch
/ profile).
n/a
Luminaire does not
power up
No power
Circuit not energized...
- verify circuit breaker (at source) is turned on.
Not plugged in...
- ensure A/C cable is connected to power source.
n/a
Self tests will not run or
software download does
not work from luminaire.
DMX Data Input
Detecting DMX data...
- disconnect DMX input cable.
n/a
No response to DMX
data
DMX Failure
DMX connector disconnected...
- check DMX DATA IN connection.
n/a
Erratic control of lumi-
naire
DMX Termination
No DMX termination or termination not correct...
- check for DMX terminator.
Summary of Contents for Vari-Lite VL770
Page 1: ......
Page 13: ...FOREWORD 02 9687 0010 0 xi ...
Page 14: ...VARI LITE VL440 VL770 VL880 SPOT LUMINAIRES SERVICE MANUAL xii 02 9687 0010 0 ...
Page 30: ...VARI LITE VL440 VL770 VL880 SPOT LUMINAIRES SERVICE MANUAL 12 02 9687 0010 0 Notes ...
Page 156: ...VARI LITE VL440 VL770 VL880 SPOT LUMINAIRES SERVICE MANUAL 138 02 9687 0010 0 Notes ...
Page 164: ...VARI LITE VL440 VL770 VL880 SPOT LUMINAIRES SERVICE MANUAL 146 02 9687 0010 0 Notes ...
Page 188: ...VARI LITE VL440 VL770 VL880 SPOT LUMINAIRES SERVICE MANUAL 170 02 9687 0010 0 Notes ...
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