User Guide for Keychron models including: K4 Max, K4 Max Wireless Mechanical Keyboard, Wireless Mechanical Keyboard, Mechanical Keyboard, Keyboard

Quick Start Guide

24 часа назад — The keyboard backlight will flash in red quickly for 3 seconds, indicating that the keyboard has been reset. Flash your keyboard firmware. 1. Visit launcher.

Keychron K4 Max Mechanical Keyboard Wireless with Number Pad, 2.4 GHz/Bluetooth 5.1/Wired Custom Keyboard with 100 Keys, Programmable RGB Backlight Hot-Swappable for Mac Windows Linux Keychron Super Banana Switch

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If you are a Windows user, please find the appropriate keycaps in the box, then follow the instructions below to find and replace the following keycaps.

1 Connect 2.4GHz Receiver
Connect the 2.4GHz receiver to the device USB port.

Quick Start Guide

2 Connect Bluetooth

Switch toggle to 2.4GHz mode

Win/Android Mac/iOS

G

BT

G / / BT
G = 2.4GHz

Type-C Cable
2.4GHz Receiver

Extension Adapter For Receiver

Note: For the best wireless experience, we recommend using the extension adapter for receiver and putting the 2.4GHz receiver somewhere on your desk close to your keyboard for a low rate of latency and fewer signal interferences.

Switch toggle to Bluetooth

Win/Android Mac/iOS

G

BT

G / / BT

Press fn + 1 (for 4 seconds) and pair with device named Keychron K4 Max.

fn + 1

How to Remap Your QMK Enabled K Max Series Keyboard on macOS, Windows, Linux: https://www.keychron.com/blogs/news/how-to-use-launcher-to-program-your-keyboard
Source Code, download link will be available on the product page of our official website if the code is up on Github, you can then search "source code" to find it.
More files for further customization: https://www.keychron.com/pages/keychron-k4-max-user-guide

3 Connect Cable

5 The Backlight

Press fn + Q to change the lighting effect

Switch toggle to Cable

Win/Android Mac/iOS

G

BT

G / / BT

Press fn + tab to turn the backlight on/off

4 Switch To The Right System
Please make sure the system toggle on the top left corner has been switched to the same system as your computer's operating system.

Win/Android Mac/iOS

G

BT

Win Mac

6 Adjust The Backlight Brightness
Press fn + W to increase the backlight brightness

Press fn + S to decrease the backlight brightness

fn + Q

fn + tab

fn + W

fn + S

7 The Keychron Launcher App
Please visit launcher.keychron.com to use the online Launcher web app to remap the keys, create macro commands, or flash the firmware. If the Launcher cannot recognize your keyboard, please reach our support to get the instructions.

8 The Layers
There are four layers of key settings on the keyboard. The layer 0 and layer 1 are for the Mac system. The layer 2 and layer 3 are for the Windows system.

If your system toggle is switched to Mac, then the layer 0 will be activated.

If your system toggle is switched to Windows, then the layer 2 will be activated. Remember that if you are using it in Windows mode, please make changes to the layer 2 instead of the top layer (the layer 0). This is a common mistake people are making.

*The online Launcher can only run on the latest version of Chrome, Edge, and Opera browsers. *The Launcher only works when the keyboard is connected by wire to the computer.

9 Factory Reset & Firmware Update
fn + J + Z

Troubleshooting? Don't know what's going on with the keyboard? Factory reset your keyboard 1. Power on your keyboard. 2. Press and hold fn + J + Z (for 4 seconds). The keyboard backlight will flash
in red quickly for 3 seconds, indicating that the keyboard has been reset. Flash your keyboard firmware 1. Visit launcher.keychron.com to open the online Launcher web app. 2. Ensure the keyboard is in Cable or Wired mode and plug in the power cable. 3. Find the 'Firmware Update' tab on the left side of the Launcher and connect
your keyboard with it. 4. Follow the instructions on the Launcher and complete the firmware update. *Step-by-step guide, search the keyword "firmware" on keychron.com.

10 Warranty

Not Happy
support@keychron.com

The keyboard is highly customizable and easy to be rebuilt. If anything goes wrong with any of the keyboard components of keyboard during the warranty period, we will only replace the defective parts of the keyboard, not the whole keyboard.



References

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