1. Introduction
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. Safety Information
To prevent fire, electric shock, or injury, please observe the following safety precautions:
- Do not block ventilation openings. Ensure adequate space around the projector for proper airflow.
- 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.
- Do not open the projector casing. Refer all servicing to qualified service personnel.
- Avoid looking directly into the projector lens when the lamp is on, as the bright light can damage your eyes.
- Place the projector on a stable, level surface to prevent it from falling.
- Unplug the projector from the power outlet before cleaning or when not in use for extended periods.
3. Package Contents
Please check that all items are present and in good condition:
- Cheerlux CL740 Black Projector
- Power Cable
- Remote Control
- AV Cable
- User Manual (this document)
4. Product Overview
Front and Top View
Figure 4.1: Front and top 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. Setup
5.1 Placement
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 Power Connection
- Connect the power cable to the projector's power input port on the rear panel.
- Plug the other end of the power cable into a suitable electrical outlet.
- Press the power button on the projector or remote control to turn on the device. The power indicator light will illuminate.
5.3 Focus and Keystone Adjustment
- Focus: Rotate the focus ring around the lens until the projected image appears sharp and clear.
- Keystone: 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. Operating Instructions
6.1 Powering On/Off
- To power on, press the Power button on the projector's control panel or the remote control.
- To power off, press the Power button again. The projector will enter standby mode. It is recommended to allow the projector to cool down before unplugging it.
6.2 Source Selection
To select an input source:
- Press the Source button on the projector or remote control.
- Use the navigation arrows to highlight the desired input source (e.g., HDMI1, HDMI2, VGA, AV, USB, TV).
- Press OK or Enter to confirm your selection.
6.3 Menu Navigation
The projector's on-screen display (OSD) menu allows you to adjust various settings such as picture mode, aspect ratio, sound, and more.
- Press the Menu button to open the OSD menu.
- Use the navigation arrows (Up/Down/Left/Right) to move through menu options.
- Press OK or Enter to select an option or confirm a setting.
- Press Menu again or Exit to close the menu.
7. Connectivity
7.1 Connecting External Devices
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).
Figure 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. Maintenance
8.1 Cleaning the Lens
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 Ventilation
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 replacement.
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. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No image projected |
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| Image is blurry |
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| Image is trapezoidal |
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| No sound |
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Figure 9.1: An 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. Specifications
| Feature | Detail |
|---|---|
| Brand | Cheerlux |
| Model | CL740 (20170925CL740B) |
| Display Technology | LCD |
| Native Resolution | 800 x 480 pixels |
| Aspect Ratio | 1.66:1 |
| Light Source | LED |
| LED Lifespan | Up to 50,000 hours |
| Max Screen Size | 260 Inches |
| Connectivity | VGA, AV, 2x HDMI, 2x USB 2.0, TV Tuner |
| Output Wattage | 90 Watts |
| Voltage | 240 Volts |
| Item Weight | 2.9 kg |
| Product Dimensions | 32 x 25.5 x 11.51 cm |
| Includes Remote | Yes |
11. Warranty and Support
For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.
