Philips VARILITE VLX3, Service Manual

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T
ROUBLESHOOTING
: T
ROUBLESHOOTING
G
UIDE
0 2 . 9 7 0 3 . 0 0 1 0 0 15
2
n/a LED (light) is getting
dimmer. Fixture appears not to be
operating at full bright-
ness. Luminaire has detected an over temperature condi-
tion...
- The luminaire will reduce power to all 3 LEDs if it
senses that one LED is operating over the
specified temperature. LED temperature is read
and recorded through a thermistor imbedded in
each LED chip. The two yellow wires carry the
information (on temperature) to the LED’s
respective driver PCB.
- Check the thermistor temperatures of each LED
through the fixture’s LCD display.
If one LED is much hotter than the others...
- Check to see that the LED’s fan is running /
connected to the Driver PCB (Note, LED Driver
PCB number 5 does not have a fan) OR,
- If thermistor is not reading, replace Driver PCB
OR,
- If still no reading, replace the LED.
n/a Colors (light output) not
matching from luminaire
to luminaire Color output not match-
ing other VLX3 wash fix-
tures operating at same
control settings. Calibration turned On or Off...
- Check fixture calibration setting. Make sure
calibration is set to same setting (On or Off) as
other fixtures.
- Check dimming curve setting. Make sure
dimming curve selection (Linear or Curve) is
same for all fixtures.
Table 2-2: Troubleshooting Guide (Continued)
Message Symptom Description Possible Cause and Remedy