C400 - Video projector LENOVO - Free user manual and instructions
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| Product Type | Video Projector |
| Brand | Lenovo |
| Model | C400 |
| Display Technology | DLP |
| Native Resolution | 1920 x 1080 (Full HD) |
| Brightness | 3000 ANSI Lumens |
| Contrast Ratio | 15000:1 |
| Lamp Life | Up to 20,000 hours (Normal Mode) |
| Throw Ratio | 1.2:1 |
| Image Size | 40 - 300 inches |
| Keystone Correction | Vertical & Horizontal (±30°) |
| Input Ports | HDMI (x2), USB (x1), VGA (x1), Audio Out (3.5mm) |
| Built-in Speaker | 10W Mono |
| Noise Level | 30 dB (Eco Mode) |
| Power Consumption | 200W (Normal), <0.5W (Standby) |
| Dimensions (W x D x H) | 315 x 230 x 95 mm |
| Weight | 2.5 kg |
| Power Supply | AC 100-240V, 50/60Hz |
| Maintenance | Clean air filter every 500 hours; replace lamp when prompted |
| Safety | Auto-off after inactivity; overheat protection |
| Spare Parts | Replacement lamp (model: LC301), air filter kit |
| Repairability | User-replaceable lamp and filter; professional service for other components |
| Operating Temperature | 5°C to 40°C |
| Warranty | 2 years limited |
Frequently Asked Questions - C400 LENOVO
How do I connect my Lenovo C400 to a laptop?
Use an HDMI cable to connect the projector's HDMI port to your laptop's HDMI output. Switch the projector input to HDMI using the remote or control panel. If your laptop has no HDMI, use a VGA cable (not included).
Why is the projected image blurry?
Adjust the focus ring on the projector lens. Ensure the projector is at the correct distance from the screen (1.2x zoom). If keystone is applied, reduce it via the menu for sharper edges.
How often should I replace the lamp?
The lamp lasts up to 20,000 hours in normal mode. Replace it when the lamp indicator turns red or the image dims. Use only genuine Lenovo replacement lamp (model LC301).
Can I use the projector with a streaming device like Chromecast?
Yes, plug the streaming device into one of the HDMI ports. Power it via its own adapter or the projector's USB port (if supported). Then select the correct HDMI input.
What should I do if the projector overheats?
Ensure the air vents are not blocked. Check and clean the air filter every 500 hours. Place the projector in a well-ventilated area and avoid ambient temperatures above 40°C.
How do I clean the air filter?
Turn off and unplug the projector. Locate the filter cover (usually on the side), slide it out, and gently vacuum or wash with mild soap and water. Let it dry completely before reinstalling.
The projector does not turn on. What could be the issue?
First, check the power cord and outlet. Verify the power indicator on the projector. If the lamp indicator is blinking, the lamp may need replacement. Also, ensure the safety lock is off.
Can I mount the projector on the ceiling?
Yes, the Lenovo C400 supports ceiling mounting. Use a compatible universal projector mount (VESA 200x100mm). Ensure the mount can support at least 3 kg (projector weight 2.5 kg).
How do I adjust the image size?
Use the zoom ring on the lens. Move the projector closer to reduce image size, or farther to enlarge. The optimal distance for a 100-inch screen is about 3.2 meters.
What does the 'Eco' mode do?
Eco mode reduces lamp brightness to extend lamp life and lower noise. It cuts brightness by about 20% but saves energy. Enable it in the projector menu for quieter operation.
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