RL-JA21 - Video projector LG - Free user manual and instructions
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| Brand | LG |
| Model | RL-JA21 |
| Product Type | Video projector |
| Display Technology | DLP |
| Resolution | 1920 x 1080 (Full HD) |
| Brightness | 1000 ANSI lumens |
| Contrast Ratio | 150,000:1 |
| Light Source | LED (up to 30,000 hours) |
| Projection Size | 30 to 150 inches |
| Throw Ratio | 1.2:1 |
| Focus | Manual |
| Keystone Correction | ±40° (vertical / horizontal) |
| Built-in Speaker | 3W mono |
| Connectivity | HDMI, USB-A, USB-C, 3.5mm audio out |
| Wireless | Wi-Fi (screen mirroring), Bluetooth 5.0 |
| Power Consumption | 65W (max) |
| Power Supply | AC 100-240V, 50/60Hz |
| Dimensions (W x D x H) | 220 x 180 x 80 mm |
| Weight | 1.2 kg |
| Operating Temperature | 0°C to 40°C |
| Included Accessories | Remote control, power adapter, quick guide |
Frequently Asked Questions - RL-JA21 LG
How to adjust the focus and keystone on the LG RL-JA21?
Use the manual focus ring on the lens. For keystone correction, go to Menu > Picture > Keystone and adjust using the remote control arrows to correct trapezoid distortion.
Can I connect my smartphone to the projector wirelessly?
Yes, the RL-JA21 supports screen mirroring via Wi-Fi. On Android, use Smart View or Miracast; on iPhone, use AirPlay if supported or use a Lightning to HDMI adapter.
What is the maximum projection size I can achieve?
The projector can display images from 30 inches up to 150 inches diagonally, depending on the distance from the wall or screen.
How do I clean the projector lens?
Use a soft, lint-free cloth slightly dampened with lens cleaner. Gently wipe the lens in a circular motion. Avoid using abrasive materials or liquid directly on the lens.
The projector does not turn on. What should I check?
First, ensure the power adapter is securely connected. Check if the wall outlet works. If the projector overheated, let it cool down. If the LED indicator blinks, consult the manual for error codes.
Can I use the projector with a gaming console?
Yes, connect via HDMI. The projector supports 1080p input. For best performance, enable Game Mode in the picture settings to reduce input lag.
How to update the firmware on the RL-JA21?
Connect the projector to Wi-Fi. Go to Menu > Support > Software Update. Follow on-screen instructions. Alternatively, download the firmware from the LG support site onto a USB drive and update via the USB port.
What is the lifespan of the LED light source?
The LED light source is rated for up to 30,000 hours of use. If you use the projector for 4 hours daily, it can last over 20 years.
The image appears blurry or out of focus. What can I do?
Adjust the manual focus ring until the image sharpens. Also, check if the projector is at the correct distance (throw ratio 1.2:1). Clean the lens if dusty.
How to reset the projector to factory settings?
Go to Menu > General > Reset to Initial Settings. Enter the PIN (default 0000) to confirm. The projector will restart and restore all factory defaults.
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USER MANUAL RL-JA21 LG
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Product information
Brand : LG
Model : RL-JA21
Category : Video projector