C4020DVB - Television Cello - Free user manual and instructions
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| Product Type | LED TV |
| Model | C4020DVB |
| Screen Size | 40 inches (diagonal) |
| Resolution | 1920 x 1080 (Full HD) |
| Aspect Ratio | 16:9 |
| Refresh Rate | 60 Hz |
| Brightness | 250 cd/m² |
| Contrast Ratio | 3000:1 |
| Viewing Angle | 178° horizontal/vertical |
| Audio Output | 2 x 8W speakers |
| Power Consumption (Max) | 70W |
| Standby Power | <0.5W |
| Dimensions (with stand) | 904 x 565 x 190 mm |
| Weight (with stand) | 7.5 kg |
| Inputs | 2 x HDMI, 1 x USB, 1 x VGA, 1 x Composite, 1 x RF |
| Tuner | DVB-T2/C |
| Operating System | Non-smart (basic menu) |
| Remote Control | Included |
| Wall Mount VESA | 200 x 200 mm |
| Care Instructions | Clean with soft dry cloth; avoid liquids; ensure ventilation. |
| Safety | Do not expose water; do not open back; unplug during storms. |
| Spare Parts | Remote control and stand available from Cello. |
| Warranty | 2 years |
| Country of Origin | China |
Frequently Asked Questions - C4020DVB Cello
How do I reset the TV to factory settings?
Press the Menu button, navigate to Settings, then select Factory Reset. Confirm with OK. The TV will restart and restore default settings.
How do I connect external devices via HDMI?
Insert an HDMI cable into the device's HDMI output and the TV's HDMI input. Press Source on the remote and select the corresponding HDMI port. The device should appear on screen.
Why is there no picture but sound?
This may indicate a backlight failure or a display panel issue. First check if the source is working. If not, contact Cello support. Avoid attempting repairs yourself.
How do I tune channels?
Press Menu, go to Channel Setup, select Auto Tune. Ensure the aerial is connected. The TV will scan for available DVB-T2/C channels. Save when done.
How do I adjust picture settings?
Press Menu, then select Picture. Adjust brightness, contrast, colour, and sharpness. Use modes like Standard, Movie, or Dynamic.
How do I enable subtitles?
Press the Subtitle button on the remote (or select via Menu > Subtitles). Choose from available languages. Subtitles are only available on supported broadcasts.
The remote control is not working. What should I do?
Replace the batteries with new ones. Ensure nothing is blocking the IR sensor. Point the remote directly at the TV. If still not working, try a universal remote or contact support.
How do I play media from a USB drive?
Insert the USB drive into the USB port. Press Source and select USB. Use the remote to navigate and select files. Supported formats: MP4, AVI, MKV, JPEG, MP3.
How do I wall mount the TV?
Use a VESA 200x200 mm wall mount kit. Remove the stand, attach the mounting brackets to the back of the TV, then fix them to the wall. Ensure the wall can support the weight (7.5 kg).
What should I do if the TV won't turn on?
Check the power cable is securely connected. Try a different power outlet. If the standby LED is off, it may be a power issue. If the LED is on but no screen, contact Cello support.
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