1. Introduction
The Yunzii QL75 is a versatile tri-mode mechanical keyboard designed with a retro typewriter aesthetic, combining classic design with modern functionality. It features hot-swappable switches, customizable RGB lighting, and broad compatibility across various operating systems. This manual provides detailed instructions for setting up, operating, and maintaining your QL75 keyboard.
2. Key Features
- Retro Typewriter Design: Blends vintage aesthetics with modern mechanical keyboard performance.
- Tri-Mode Connectivity: Supports wired (Type-C), 2.4G wireless, and Bluetooth 5.0 connections. Bluetooth mode offers three channels for connecting up to three devices simultaneously.
- Full Key Hot-Swap: Allows for easy replacement of 3-legged or 5-legged mechanical switches without soldering.
- Customizable RGB Backlight: Features 16 million colors with custom dynamic lighting effects and music rhythm synchronization.
- Integrated Tablet/Smartphone Stand: A stable bracket accommodates devices for comfortable viewing and document work.
- Long-Lasting Battery: Equipped with a built-in 4000mAh battery and a low-power module for extended use.
- QMK/VIA Support: Enables advanced customization of key functions, macros, and lighting.
- ABS Typewriter Style Keycaps: Electroplated dumb chrome laser engraving for a smooth typing experience and durability.
- Broad System Compatibility: Works with Windows, Mac, iOS, Linux, and Android operating systems.
3. Package Contents
Upon unboxing, please ensure all items are present:
- Yunzii QL75 Mechanical Keyboard
- USB Type-C Cable
- 2.4G Wireless Receiver
- Keycap Puller
- Switch Puller
- User Manual (this document)
4. Setup Instructions
4.1. Keyboard Overview
- Multifunctional work driving arm
- ABS typewriter style keycap
- Multi-function tray
- Satellite axis
- Shaft body
- Keyboard cover
- PC batter board
- Multifunctional Knob
- 4000mAh battery
- PCB circuit board
- Bottom cotton
- Keyboard bottom case
- 2.4G receiver
- Silicone non-slip foot mat
4.2. Connecting Your Keyboard
The QL75 supports three connection modes: Wired (Type-C), 2.4G Wireless, and Bluetooth 5.0.
4.2.1. Wired Connection (Type-C)
- Locate the Type-C port on the keyboard.
- Connect one end of the provided USB Type-C cable to the keyboard and the other end to your computer's USB port.
- The keyboard will be automatically recognized and ready for use.
4.2.2. 2.4G Wireless Connection
- Locate the 2.4G wireless receiver, typically stored in a compartment on the keyboard (refer to Figure 4).
- Plug the 2.4G receiver into an available USB port on your computer.
- Switch the keyboard to 2.4G mode (usually via a switch on the keyboard or a key combination). The keyboard should connect automatically.
4.2.3. Bluetooth 5.0 Connection
The QL75 supports connecting to three different Bluetooth devices.
- Switch the keyboard to Bluetooth mode.
- On your device (computer, tablet, smartphone), enable Bluetooth and search for new devices.
- Select "YUNZII QL75" from the list of available devices.
- To switch between connected Bluetooth devices, use the designated shortcut keys (refer to the keyboard's specific key combinations, often Fn + 1/2/3).
4.3. Hot-Swap Switch Installation
The QL75 features a full key hot-swap base, allowing you to easily change switches.
- Remove Keycap: Use the provided keycap puller to gently remove the desired keycap.
- Remove Switch: Use the provided switch puller to carefully grip the switch and pull it straight up.
- Install New Switch: Align the pins of the new 3-legged or 5-legged switch with the holes on the PCB. Gently push the switch straight down until it clicks into place. Ensure the pins are not bent.
- Install Keycap: Place the keycap onto the new switch and press down firmly.
5. Operating Instructions
5.1. Basic Keyboard Functions
The QL75 features an 84-key layout with a knob lever. Standard QWERTY functions apply. Refer to your operating system's keyboard settings for specific key mappings.
5.2. Multifunctional Knob and Lever
- Knob:
- Short press: Mute/Unmute audio.
- Rotate: Adjust volume.
- Lever:
- Short press: Switch connection channels (e.g., between Bluetooth devices).
- Long press: Enter the knob's screwing function (customizable).
- Paddle: Acts as an 'Enter' function (customizable).
Note: The functions of the knob and lever can be customized using QMK/VIA software.
5.3. RGB Backlight Control
The QL75 features a full-color RGB backlight with 16 million adjustable colors and dynamic effects.
Specific key combinations (often involving the 'Fn' key) are used to change lighting modes, colors, brightness, and speed. Refer to the keyboard's quick start guide or QMK/VIA documentation for detailed controls.
5.4. QMK/VIA Customization
The QL75 supports QMK/VIA, allowing for advanced customization:
- Remap keys to different functions.
- Create custom macros for complex commands.
- Adjust RGB lighting patterns and effects.
To use QMK/VIA, download the appropriate software from the official QMK/VIA website and follow their instructions for flashing firmware and configuring your keyboard.
6. Maintenance
6.1. Battery Management
The keyboard has a built-in 4000mAh battery. To maximize battery life:
- Turn off the keyboard using the power switch when not in use for extended periods.
- Charge the keyboard regularly using the provided Type-C cable.
- Avoid fully discharging the battery frequently.
6.2. Cleaning
To clean your keyboard:
- Disconnect the keyboard from all power sources.
- Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution to wipe down the keycaps and casing.
- For deeper cleaning, remove keycaps and use compressed air to clear debris from between switches.
- The keycaps are designed to be anti-slip and durable, making them easy to maintain.
6.3. Keycap and Switch Replacement
As detailed in Section 4.3, the hot-swap feature allows for easy replacement of switches and keycaps. This is useful for customization or replacing worn-out components.
7. Troubleshooting
7.1. Connectivity Issues
- Keyboard not responding (Wired): Ensure the Type-C cable is securely connected to both the keyboard and the computer. Try a different USB port or cable.
- 2.4G Wireless not connecting: Ensure the 2.4G receiver is plugged in and the keyboard is switched to 2.4G mode. Try re-pairing by unplugging and re-plugging the receiver.
- Bluetooth not pairing/connecting: Ensure the keyboard is in Bluetooth pairing mode and your device's Bluetooth is enabled. Forget the device on your computer/phone and try pairing again. Ensure the keyboard is switched to the correct Bluetooth channel (1, 2, or 3).
- Lag or intermittent connection: Move the keyboard closer to the receiver/device. Avoid interference from other wireless devices.
7.2. Key Function Issues
- Keys not registering: Check if the switch under the keycap is properly seated. If not, remove the keycap and switch, then re-insert the switch firmly.
- Incorrect key output: If you have customized the keyboard with QMK/VIA, ensure the correct keymap is loaded. Reset the keyboard to factory defaults if necessary (refer to QMK/VIA documentation).
7.3. Backlight Issues
- RGB lights not working: Ensure the keyboard is powered on and not in a low-power state. Check backlight settings using key combinations.
- Lights flickering: Try adjusting brightness or changing the lighting mode. Ensure the keyboard is fully charged.
7.4. System Compatibility Note
If the system version of your device is too low, only 2.4G wireless or wired connections may be supported. Ensure your device's operating system is up-to-date for full functionality, especially for Bluetooth 5.0.
8. Specifications
| Feature | Detail |
|---|---|
| Model | QL75 |
| Keyboard Type | Three-mode retro mechanical keyboard |
| Bluetooth Name | YUNZII QL75 5.0 |
| Structure | Top structure |
| Lights | RGB, upper lamp position |
| Key Layout | 75% collated, 84 keys with knob lever |
| Hot Swap | Full key shaft seat hot plug, support 3-pin/5-pin switches |
| Product Size | 328 x 214.5 x 64 mm |
| Net Weight | 1.46 kg |
| Keycap Material | ABS Typewriter Style Keycap |
| Keycap Process | Electroplated dumb chrome laser engraving |
| Connection Mode | Wireless 2.4G / Bluetooth / Wired (Type-C) |
| Battery Capacity | 4000mAh |
| System Support | Windows, Mac, iOS, Linux, Android |
| Customization | QMK/VIA |
| Switches Hot Swap | Yes |
| Full Size keyboard | No |
| Wrist Support | No |
| Style | Standard, Ergonomics, Multimedia, Gaming |
| Interface Type | USB |
| Battery Included | Yes |
| Operation Style | Mechanical |
| Language | English |
| Origin | Mainland China |
9. User Tips
- Maximize Battery Life: Remember to use the physical power switch to turn off the keyboard when not in use to conserve the 4000mAh battery.
- Explore Customization: Don't hesitate to delve into QMK/VIA software to personalize key mappings, macros, and RGB lighting to suit your workflow and aesthetic preferences.
- Utilize Multi-Device Connectivity: Take advantage of the three Bluetooth channels to seamlessly switch between your computer, tablet, and smartphone for efficient multitasking.
- Experiment with Switches: The hot-swap feature is a great way to try different mechanical switches without buying a new keyboard. Experiment to find your preferred typing feel.
10. Warranty and Support
For warranty information, technical support, or any product-related inquiries, please contact the seller or the official Yunzii support channels. Keep your purchase receipt as proof of purchase.
