LR3/Disco 3
Safety Precautions
The following safety precautions must be followed when working on the xenon headlamp system:
DO NOT attempt any procedures on the xenon headlamps when the lights are switched on.
Handling of the D2S Xenon bulb must be performed using suitable protective equipment, e.g. gloves and goggles.
The glass part of the bulb must not be touched.
Xenon bulbs must be disposed of as hazardous waste.
Only operate the lamp in a mounted condition in the reflector.
The xenon headlamps use a complex surface reflector for the Halogen fill in high beam lamp only lighting unit, which is of
the same design as the high beam unit used on the Halogen headlamps. This type of reflector has the reflector divided
into separate parabolic segments, with each segment having a different focal length.
The high beam bulbs are quartz halogen H7, with a rating of 55W. The bulbs are retained in the headlamp unit with
conventional wire retaining clips.
The xenon headlamp is known as bi-xenon and operates as both low beam and high beam headlamp unit. The xenon
lamp or High Intensity Discharge (HID) lamp as they are sometimes called, comprises an ellipsoidal lens with a solenoid
controlled shutter to change the beam output from low to high beam.
NOTE :
The xenon headlamp system is controlled by the CJB using a control module for each headlamp and an igniter. The
control modules and the igniters provide the regulated power supply required to illuminate the xenon bulbs through their
start-up phases of operation.
Xenon/Halogen Headlamp Beam Comparison
5
-
Cornering lamp (if fitted)
6
-
Xenon low/high beam lamp
7
-
Halogen high beam lamp
8
-
High beam lamp access cover
9
-
Xenon control module
10
-
Low/high beam lamp access cover
11
-
Side lamp access cover (hidden)
12
-
Turn signal lamp access cover (hidden)
WARNING : The Xenon system generates up to 28000 volts and contact with this voltage could lead to
fatality. Make sure that the headlamps are switched off before working on the system.
If the lighting control switch is in the OFF position, the xenon lamps do not operate when the high beam 'flash'
function is operated. If the lighting switch is in the headlamps position or AUTO position with the low beam lamps
active, the xenon low beam will remain on when the high beam 'flash' function is operated.
