Mazda 3 since 2003
1. Operation and car maintenance
2. Engine
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
7.1. General information
7.2. Power supply system
7.3. Lighting system
7.3.1. The forward combined lamp
7.3.1.1. Main characteristics
7.3.1.2. Gas-discharge headlight
7.3.1.3. Design and work of a gas-discharge headlight
7.3.1.4. Function of detection of malfunctions
7.3.1.5. System of automatic alignment of headlights
7.3.1.6. Work at change of loading of the car
7.3.1.7. Work at car movement
7.3.1.8. A control system of lighting at car movement
7.3.2. The back combined lamp and the internal combined lamp
7.3.3. Removal and installation of the forward combined headlight
7.3.4. Adjustment of light of headlights
7.3.5. Removal and installation of a lamp of a headlight
7.3.6. Removal and installation of a gas-discharge lamp of a headlight
7.3.7. Removal and installation of a lamp of a lay lamp
7.3.8. Removal and installation of the forward index of turn
7.3.9. Removal and installation of the lateral index of turn
7.3.10. Adjustment of light of a forward fog light
7.3.11. Removal and installation of the back combined lamp
7.3.12. Removal and installation of the internal combined lamp
7.3.13. Removal and installation of a lamp of illumination of registration plate
7.3.14. Removal and installation of an additional signal of braking on a back spoiler
7.3.15. Removal and installation of a forward lamp of illumination of salon
7.3.16. Removal and installation of the trailer switch of a door
7.3.17. Removal and installation of a lamp of illumination of an ashtray
7.3.18. Removal and installation of a lamp of illumination of the lock of ignition
7.3.19. Removal and installation of a lamp of illumination of a ware box
7.3.20. Removal and installation of the operating switch of lighting on the dashboard
7.4. Screen wipers and stekloomyvatel
7.5. Immobilizer
7.6. Electric equipment checks
7.7. Tables
8. Body
 








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7.3.1.3. Design and work of a gas-discharge headlight

The impulse of a high voltage (an alternating current tension about 25 000 In) from the control unit of a gas-discharge headlight moves between conclusions of its lamp, initiating the gas category in xenon by which the lamp is filled.
At xenon excitement the temperature in a lamp of a gas-discharge headlight rises, evaporating mercury, and there is an electric arch.
Mercury and electric arch cause further growth of temperature in a lamp, iodide evaporates and decays, atoms of metal give the saved-up energy, making light.

Fig. 7.16. Design of a gas-discharge headlight: 1–In +; 2–control unit of a gas-discharge headlight; 3–conclusion; 4–lamp of a gas-discharge headlight; 5–gas xenon; 6–atoms of metal; 7–iodide; 8–mercury; 9–light





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7.3.1.2. Gas-discharge headlight
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7.3.1.4. Function of detection of malfunctions