LC-57D90U - Television SHARP - Free user manual and instructions
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| Product Type | LCD Television |
| Brand | Sharp |
| Model Number | LC-57D90U |
| Screen Size | 57 inches |
| Display Resolution | 1920 x 1080 (Full HD) |
| Aspect Ratio | 16:9 |
| Contrast Ratio | 1200:1 |
| Response Time | 8 ms |
| Built-in Tuner | ATSC/NTSC |
| HDMI Inputs | 2 |
| Component Video Inputs | 2 |
| Composite Video Inputs | 2 |
| S-Video Input | 1 |
| Audio Output Power | 15W + 15W |
| Power Consumption | 330W (Standby: 1.2W) |
| With Stand Dimensions | 54.1 x 35.4 x 15.2 inches |
| Without Stand Dimensions | 54.1 x 33.1 x 5.7 inches |
| With Stand Weight | 121.3 lbs |
| Without Stand Weight | 104.7 lbs |
| VESA Mount Pattern | 400 x 400 mm |
| Remote Control | Included |
| Color | Black |
| Warranty | 1 year limited |
Frequently Asked Questions - LC-57D90U SHARP
How do I connect my cable or satellite box to the Sharp LC-57D90U?
Use an HDMI cable for the best picture quality. Connect one end to the HDMI output on your cable or satellite box and the other to one of the HDMI inputs on the TV. Then use the Input button on the remote to select the corresponding HDMI source.
Can I mount this TV on the wall?
Yes, the Sharp LC-57D90U supports VESA wall mounting with a 400 x 400 mm pattern. Use a compatible wall mount bracket and follow the manufacturer's instructions. Be sure to tighten all screws securely and verify the wall can support the TV's weight.
How do I clean the LCD screen without damaging it?
Turn off the TV and unplug it. Use a soft, dry microfiber cloth to gently wipe the screen. For stubborn spots, lightly dampen the cloth with distilled water or a screen-cleaning solution. Never spray liquid directly on the screen, and avoid using harsh chemicals or paper towels.
Why is the picture quality not sharp? How can I adjust the settings?
If the picture looks soft, ensure the connected device outputs 1080p resolution and that the TV is not upscaling unnecessarily. Use the Picture menu on the remote to adjust Sharpness, Contrast, and Color. Also check if a Vivid mode is enabled, which can sometimes cause over-processing.
How do I switch between inputs?
Press the Input or Source button on the remote control to cycle through available sources like HDMI, Component, Composite, and S-Video. The on-screen menu will show the selected input.
Does this TV support 1080p resolution?
Yes, the Sharp LC-57D90U has a native resolution of 1920 x 1080 (Full HD), so it can display 1080p content without downsizing. Make sure your source device is set to output 1080p for the best image quality.
How do I program the remote control to control other devices?
Refer to the remote control setup section of the manual. Typically, you need to press and hold the device button (e.g., DVD or CBL/SAT) and enter a code for your brand. The manual includes a list of codes for common brands.
What is the best picture mode for movies?
For a cinematic experience, select the Movie or Cinema picture mode in the menu. This mode typically disables artificial sharpening and reduces contrast to match film standards. You can also manually adjust Color Temperature to Warm for more natural skin tones.
Is there a built-in speaker system?
Yes, the TV has built-in stereo speakers that deliver 15W + 15W of audio power. For enhanced sound, you can connect an external audio system using the audio output jacks or an HDMI ARC connection if available.
How do I reset the TV to factory settings?
Press the Menu button on the remote, go to Setup or System, and select Reset or Factory Reset. Confirm the action when prompted. This will erase all custom picture, audio, and channel settings and restore the TV to its original default configuration.
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USER MANUAL LC-57D90U SHARP
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Product information
Brand : SHARP
Model : LC-57D90U
Category : Television