1. Introducció
This user manual provides comprehensive instructions for the safe and efficient operation of your Cheerlux CL740 Black Projector. Please read this manual thoroughly before using the projector and retain it for future reference. Proper use and maintenance will ensure optimal performance and longevity of your device.
2. Informació de seguretat
Per evitar incendis, descàrregues elèctriques o lesions, observeu les següents precaucions de seguretat:
- No bloquegeu les obertures de ventilació. Assegureu-vos que hi hagi prou espai al voltant del projector per a un flux d'aire adequat.
- Do not expose the projector to rain or moisture. Keep it away from water sources.
- Use only the power cord supplied with the projector or an equivalent approved cord.
- No obriu el projector casing. Demaneu totes les tasques de manteniment a personal de servei qualificat.
- Eviteu mirar directament a la lent del projector quan lamp està activat, ja que la llum brillant pot danyar els ulls.
- Col·loqueu el projector sobre una superfície estable i plana per evitar que caigui.
- Desendolleu el projector de la presa de corrent abans de netejar-lo o quan no l'utilitzeu durant períodes prolongats.
3. Contingut del paquet
Si us plau, comproveu que tots els elements siguin presents i en bon estat:
- Cheerlux CL740 Black Projector
- Cable d'alimentació
- Control remot
- Cable AV
- Manual d'usuari (aquest document)
4. Producte acabatview
Davant i superior View

Figura 4.1: Frontal i superior view of the Cheerlux CL740 Projector, showing the lens, focus ring, and control panel buttons (Power, Source, Menu, Navigation).
The front of the projector features the projection lens and an infrared receiver for the remote control. The top panel includes the main control buttons for power, source selection, menu navigation, and keystone correction.
Rear Panel and Connectivity Ports

Figure 4.2: Rear panel of the Cheerlux CL740 Projector, displaying various input/output ports including Audio Out, Video In, HD1, HD2 (HDMI), R/L Audio In, YPbPr, TV, VGA, and USB ports (U1, U2).
The rear panel provides a comprehensive set of input and output ports for connecting various devices. These include two HDMI ports (HD1, HD2), VGA, AV (RCA), YPbPr, TV antenna input, Audio Out, and two USB 2.0 ports (U1, U2).
5. Configuració
5.1 Col·locació
Place the projector on a stable, flat surface. Ensure there is sufficient space around the projector for ventilation. The optimal projection distance will vary based on the desired screen size. For best results, project onto a white or light-colored wall or a dedicated projector screen.

Figure 5.1: Illustration of different projection sizes, demonstrating the flexibility of the CL740 projector to achieve various screen dimensions up to 100 inches or more depending on distance.
5.2 Connexió d'alimentació
- Connect the power cable to the projector's power input port on the rear panel.
- Connecteu l'altre extrem del cable d'alimentació a una presa de corrent adequada.
- Press the power button on the projector or remote control to turn on the device. The power indicator light will illuminate.
5.3 Ajust de l'enfocament i la distorsió trapezoidal
- Focus: Rotate the focus ring around the lens until the projected image appears sharp and clear.
- Clau clau: If the projected image appears trapezoidal (wider at the top or bottom), use the keystone correction dial on the rear panel to adjust the image shape until it is rectangular.
6. Instruccions de funcionament
6.1 Engegada/apagada
- Per encendre, premeu el botó Poder button on the projector's control panel or the remote control.
- Per apagar, premeu el botó Poder button again. The projector will enter standby mode. It is recommended to allow the projector to cool down before unplugging it.
6.2 Selecció de la font
Per seleccionar una font d'entrada:
- Premeu el botó Font botó del projector o del comandament a distància.
- Use the navigation arrows to highlight the desired input source (e.g., HDMI1, HDMI2, VGA, AV, USB, TV).
- Premeu OK or Entra per confirmar la vostra selecció.
6.3 Navegació de menús
The projector's on-screen display (OSD) menu allows you to adjust various settings such as picture mode, aspect ratio, sound, and more.
- Premeu el botó Menú botó per obrir el menú OSD.
- Use the navigation arrows (Amunt/Abaix/Esquerra/Dreta) to move through menu options.
- Premeu OK or Entra per seleccionar una opció o confirmar una configuració.
- Premeu Menú de nou o Sortida per tancar el menú.
7. Connectivitat
7.1 Connexió de dispositius externs
The Cheerlux CL740 supports a wide range of external devices:
- HDMI: Connect Blu-ray players, game consoles, laptops, or streaming devices to the HD1 or HD2 ports.
- VGA: Connect older laptops or desktop computers to the VGA port.
- AV (RCA): Connect DVD players, VCRs, or older gaming systems using the yellow (video), red (right audio), and white (left audio) RCA jacks.
- YPbPr: Connect devices with component video output.
- TV: Connect a coaxial cable for analog TV channels using the built-in TV tuner.
- USB: Insert a USB flash drive into either USB port (U1 or U2) to play multimedia files (music, photos, videos, text).

Figura 7.1: Examples of connecting smartphones to the projector using various adapters such as Slimport, MHL, and AV adapter, demonstrating versatile mobile device compatibility.

Figure 7.2: The USB 2.0 ports allow direct playback of various media types including music, photos, and movies from a USB storage device.
8. Manteniment
8.1 Neteja de la lent
Use a soft, lint-free cloth specifically designed for optical lenses to gently wipe the projector lens. Do not use abrasive cleaners or excessive force, as this can scratch the lens.
8.2 Ventilació
Regularly check that the projector's ventilation openings are clear of dust and debris. Blocked vents can lead to overheating and reduced performance. Use a soft brush or compressed air to clean the vents.
8.3 LED Illumination System
The Cheerlux CL740 utilizes an LED illumination system, which offers a significantly longer lifespan compared to conventional projector lamps. The LED light source is designed to last up to 50,000 hours, minimizing the need for lamp substitució.

Figure 8.1: Visual comparison highlighting the extended lifespan of the LED illumination system (50,000 hours) used in the CL740 projector, as opposed to the typical 3,000 hours of a conventional lamp.
9. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| No es projecta cap imatge |
|
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| La imatge és borrosa |
|
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| La imatge és trapezoïdal |
|
|
| Sense so |
|
|

Figura 9.1: Un example of the CL740 projector's output during testing, demonstrating its capability for large-scale projection, even on non-ideal surfaces like a grey wall. This image can help users assess expected image quality and size.
10. Especificacions
| Característica | Detall |
|---|---|
| Marca | Cheerlux |
| Model | CL740 (20170925CL740B) |
| Tecnologia de visualització | LCD |
| Resolució nativa | 800 x 480 píxels |
| Relació d'aspecte | 1.66:1 |
| Font de llum | LED |
| Vida útil del LED | Fins a 50,000 hores |
| Mida màxima de la pantalla | 260 polzades |
| Connectivitat | VGA, AV, 2x HDMI, 2x USB 2.0, TV Tuner |
| Potència de sortidatage | 90 watts |
| Voltage | 240 Volts |
| Pes de l'article | 2.9 kg |
| Dimensions del producte | 32 x 25.5 x 11.51 cm |
| Inclou comandament a distància | Sí |
11. Garantia i Suport
Per obtenir informació sobre la garantia i assistència tècnica, consulteu la documentació proporcionada en el moment de la compra o poseu-vos en contacte amb el vostre distribuïdor. Conserveu el comprovant de compra per a qualsevol reclamació de garantia.





