Switch On SOSLF 21 A1 Operating Instructions Manual

The Switch On SOSLF 21 A1 is a 21-inch LED monitor designed for professional and home office use, featuring Full HD resolution, a slim bezel design, multiple connectivity options including HDMI, DisplayPort, and VGA, built-in speakers, blue light reduction technology, flicker-free backlight, and an ergonomic stand with tilt, swivel, and height adjustment. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Advanced Display Features 8. Eye Comfort Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: LED panel with anti-glare coating, Ergonomic Stand, On-Screen Display (OSD) controls, multiple input ports, and built-in speakers.

Feature	Description
HDMI Port	For digital video and audio connection from modern devices
DisplayPort	For high-performance digital video connection
VGA Port	For analog video connection from older computers
Audio Input/Output	3.5mm jack for audio input and headphone output
Built-in Speakers	Integrated stereo speakers (2W x 2)
Power Input	For AC power adapter connection
OSD Control Buttons	Menu, Select, Up/Down navigation, Power
Ergonomic Stand	Tilt (-5° to +20°), Swivel (±30°), Height adjustment (110mm)
VESA Mount	100x100mm compatible for wall mounting
Power Button	Turns monitor on/off with LED indicator

Installation

Unpack and inspect contents. Place on stable, level surface.

Attach the stand: Align stand neck with monitor base and secure with provided screw.
Connect video source: Use HDMI, DisplayPort, or VGA cable to connect to your computer or device.
Connect audio: Use 3.5mm audio cable if using VGA connection (HDMI/DP carry audio).
Plug into AC power using the provided adapter.

WARNING! Monitor is heavy; lift with care using two people. Ensure stand is securely attached before tilting or adjusting height.

First-Time Setup

Power on monitor; follow on-screen prompts if available.

Select input source: Press the Menu button, navigate to Input Select, choose HDMI, DP, or VGA.
Adjust display settings: Use OSD to set brightness, contrast, and color temperature.
Configure ergonomic position: Adjust tilt, swivel, and height for comfortable viewing.
Enable eye comfort features: Activate Blue Light Reduction and Flicker-Free mode in OSD.

CAUTION! Do not force adjustments beyond specified limits. Make adjustments gradually.

Specifications

Screen Size: 21 inches LED.
Resolution: Full HD 1920 x 1080 @ 60Hz.
Panel Type: IPS (In-Plane Switching).
Brightness: 250 cd/m² typical.
Contrast Ratio: 1000:1 static.
Response Time: 5ms (Gray-to-Gray).
Viewing Angles: 178° horizontal, 178° vertical.
Connectivity: HDMI 1.4, DisplayPort 1.2, VGA, Audio In, Headphone Out.
Speakers: 2W x 2 stereo.
Power Consumption: < 25W typical, < 0.5W standby.
Power Source: 100-240V AC, 50/60Hz via external adapter.

Controls and Settings

Access OSD via the Menu button on the bottom bezel. Front Controls: Power, Menu, Up/Down navigation, Select/Exit.

OSD Menu Structure: Picture (Brightness, Contrast, Sharpness, Color Temp), Input Select (HDMI, DP, VGA), Audio (Volume, Mute), Setup (Language, OSD Timeout, Reset), Special Features (Blue Light, Flicker-Free, Overdrive).

Picture: BRIGHTNESS, CONTRAST, SHARPNESS, COLOR TEMP (Cool, Normal, Warm, User). Audio: Volume control, Mute toggle. Setup: Language (ENGLISH default), OSD Position, OSD Timeout, Reset All Settings. Special: Blue Light Reduction (Off, Low, Medium, High), Flicker-Free (On/Off), Response Time (Standard, Fast).

Connecting Devices

HDMI/DisplayPort: For digital video and audio. VGA: For analog video (requires separate audio).

Turn off monitor and source device before connecting.
Match cable to correct port (HDMI to HDMI, etc.).
Select corresponding input source via OSD or auto-detect.
For audio with VGA: Connect 3.5mm audio cable from PC to monitor's Audio In.

Tip: Use the cable management clip on the stand to route cables neatly.

Advanced Display Features

Supports various image enhancement and customization options.

Color Calibration: Use User Color Temp to adjust R/G/B gains and offsets.
Aspect Control: Choose between Full, 4:3, or 1:1 pixel mapping.
Overdrive: Set Response Time to "Fast" for reduced motion blur in games.
Sharpness: Adjust edge enhancement (0-100).
Gamma: Select from multiple gamma curves (1.8, 2.0, 2.2, 2.4).
Black Stabilizer: Improves visibility in dark scenes without washing out bright areas.

WARNING! Excessive sharpness or extreme color settings may cause image artifacts.

Eye Comfort Features

Blue Light Reduction: Four levels (Off, Low, Medium, High) to reduce potentially harmful blue light emissions. Flicker-Free Technology: Eliminates screen flicker by using DC backlight dimming to reduce eye strain.

Care & Cleaning

Unplug monitor before cleaning. Use a soft, dry microfiber cloth. For stubborn marks, lightly dampen cloth with water only. Do not apply liquid directly to screen.

CAUTION! Do not use alcohol, ammonia, or abrasive cleaners. Avoid pressure on the screen surface.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. CE, RoHS, ENERGY STAR® certified. Copyright © 2023 Switch On; trademarks of Switch On Technologies, Inc. For support, visit www.switchontech.com/support or contact 1-800-555-0199.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power / No display	Power connection	Check power adapter connection; ensure outlet is working; press Power button firmly.
No signal message	Input selection/cable	Select correct input source in OSD; check cable connections; try different cable.
Image is blurry	Resolution/connection	Set source to 1920x1080 @ 60Hz; ensure VGA cable is fully seated and screwed in.
No audio from speakers	Settings/connection	Increase volume in OSD and source; check audio cable connection; select correct audio output on source.
Dead/stuck pixels	Manufacturing variance	A few pixels may be normal; run pixel exerciser software; contact support if excessive.
Backlight bleeding	Panel characteristic	Reduce brightness; avoid viewing dark content in completely dark rooms.

Reset: OSD > Setup > Reset All Settings to restore factory defaults.

Service: 1-800-555-0199; www.switchontech.com/support