Contents hide
1 Keychron K3 Mechanical Bluetooth Keyboard
2 IN THE BOX
3 FUNCTION DESCRIPTION
4 TROUBLESHOOTING
5 Documents / Resources
5.1 References

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Keychron K3 Mechanical Bluetooth Keyboard

Keychron-K3-Mechanical-Bluetooth-Keyboard-product

IN THE BOX

  • Keychron K3 Bluetooth Mechanical Keyboard x 1
  • Type-C Cable *1
  • Manual *1
  • Quick Start Guide * 1
  • Extra Keycaps Set *1

QUICK START GUIDE
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.

Keychron-K3-Mechanical-Bluetooth-Keyboard-fig (1)

Change Bluetooth

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Change Cable

Keychron-K3-Mechanical-Bluetooth-Keyboard-fig (3)

Change Light effect

Switch between function and multimedia keys (F1- F 12

Keychron-K3-Mechanical-Bluetooth-Keyboard-fig (5)

Disable Auto Sleep Mode

Keychron-K3-Mechanical-Bluetooth-Keyboard-fig (6)

Remap keys
We don’t have official software to remap the keys yet. But you can use these two software to get the job done. Except for the light effect key

Keychron-K3-Mechanical-Bluetooth-Keyboard-fig (7)

Note:
We are also working on our software now. It should be available later this year on our website.

We have a Linux user group on Facebook.Please search”Keychron Linux Group” on Facebook. So you can better experience with our keyboard.

Keychron-K3-Mechanical-Bluetooth-Keyboard-fig (8)

Turn Off the Backlight

  1. If you are on the Mac, the default is to press the F5 key.
  2. If you are on Windows, the default is to press the fn + F5 key.
  3. Or press the fn + light effect key.

Keychron-K3-Mechanical-Bluetooth-Keyboard-fig (9)Factory Reset

Keychron-K3-Mechanical-Bluetooth-Keyboard-fig (10)

FUNCTION DESCRIPTION

CHARGING

  • Plug the cable into a USB port and plug the other end into the keyboard port. Charging Indicator: When the battery is below 15%, a red battery blinking indicator will be triggered. A red light will stay on while charging; Fully charged in around 3 hours, a green battery indicator will appear.
  • The Keychron keyboard is compatible with all USB ports. Please use a 5V IA adapter or USB 3.0 for the best performance. The Keychron K3 can be charged in Bluetooth/on/off mode.
  • This product supports up to 5V charging voltage and IA charging current. We are not responsible for any problems caused by improper charging.

BLUETOOTH/WIRED MODE (TOGGLE SWITCH)

WIRED MODE

  1. Switch the toggle switch to the Cable option (it only works when a USB cable is plugged in).
  2. Connect our cable to your PC and keyboard.
  3. BackIit will be turned on.

Under Wired Mode, the keyboard will not enter into Battery Saver Mode.

BLUETOOTH MODE

  1. Switch the keyboard to the Bluetooth option.
  2. Backlit will be turned on.
  3. Hold “Fn+l’i key for 4 seconds to activate Bluetooth pairing (the Bluetooth indicator fast flashes for 3 minutes to detect pairing.
  4. Search for the Bluetooth device “Keychron K3” on your device and connect it (the Bluetooth indicator goes off after successful pairing).

Note:

  1. This keyboard supports pairing up to 3 devices simultaneously via a combination key.
  2. The Bluetooth indicator will continue to flash for 3 minutes.
  3. Slow or failed connections may exist due to different Bluetooth versions, please make sure all the settings are correct.

SWITCH BLUETOOTH DEVICES
Short press the combination key fn + I/fn + 3 to switch to another device.

RECONNECT

  1. Switch the keyboard to the Bluetooth option to activate the keyboard (the keyboard will connect to the last connected device by default).
  2. The Bluetooth indicator flashes for 4 seconds and automatically pairs with the last paired device.
  3. If the Bluetooth indicator is off, press any button to enter the connection again.

The keyboard must have been paired with the device to perform this function.

TURN OFF THE KEYBOARD
Switch to “Off”

BATTERY SAVER
Under Bluetooth mode, the keyboard backlight turns off when it is inactive for 10 minutes. Tap any button to wake the keyboard.lf want to disable this auto battery save mode, press fn+S+O for 4 seconds. Then if want to enter this power save mode again, press fn+S+O for 4 seconds.

BACKLIT SETTING
Short press to switch between different types of lighting effects. When the backlit is on, press the button to switch between them. Short press fn and “left arrow” or fn and “right arrow” to adjust light colors. (For RGB version only)

OS SWITCH

  1. MAC/iOS
    Turn the switch to Mac/iOS when you are connected to a Mac or iOS operating system.
  2. WINDOWS/ANDROID
    Switch the toggle to Windows/Android when the keyboard is connected to a Windows or Android operating system.
    When using the Windows/Android mode, keys are used for “Windows” and ‘Alt” functions.
  3. INPUT METHOD SWITCH
    For iOS:
    Input method switch: Ctrl + Space
    Caps Lock:
    Caps (Enable General>Keyboards>Hardware Keyboard>Caps Lock Language Switch)
    For Android:
    Input method switch: Shift + Space

NOTE:
Functions of certain multimedia keys may be disabled due to compatibility, versions, brands, and drivers of Windows/Android OS. We also recommend not to switch OS frequently as it may impact keyboard operations.

TROUBLESHOOTING

  • If unable to pair the keyboard to the device, confirm that the device you’re trying to pair with is Bluetooth-capable.
  • If so, restart the device and try pairing it with the keyboard again.

Note:

  • On a Windows computer, a new Bluetooth connection will sometimes require additional software updates—a process that may still be ongoing after a message appears indicating a successful completion.
  • Wait at least 20 minutes after pairing to make sure all updates are completed before restarting the computer.
  • Confirm that the device is configured to accept Bluetooth connections(Windows) and supports an external keyboard (HID profile).
  • Go to Bluetooth Devices >Open Settings and select the following:
  • Allow Bluetooth devices to find this computer
  • Allow Bluetooth devices to connect to this computer
  • Alert me when a Bluetooth device wants to connect

My keyboard isn’t working.

  • For the keyboard: Turn the keyboard off and back on.
  • Turn Bluetooth off and restart the computer. (Windows)

For the device:

  • Go to Bluetooth settings turn off Bluetooth and “forget” the keyboard.
  • Restart the device and turn on Bluetooth to reconnect.

Bluetooth connection is interrupted even within 10 meters.
Check if the keyboard is resting on a metal surface that can interfere with the Bluetooth signal.

Third-party input tools are not compatible with the keyboard.
Due to compatibility, versions, brands, and drivers of Windows/Android OS, functions of third-party input tools may be affected while using the keyboard. Please make sure your operating system and drivers are up to date.

Certain fn keys or multimedia keys do not work under Windows/Android mode.
Functions of certain multimedia keys may be disabled due to compatibility, versions, ra, ds, and drivers of Windows/Android OS.

Safety Precaution:

  • Keep the product, accessories, and packaging parts out of reach of children to prevent any accidents and choking hazards.
  • Always keep the product dry to avoid corrosion.
  • Do not expose the product to extreme temperatures below -100 C (50F) or above 500 C (131 OF) to preserve the lifespan of the keyboard and battery.

Keychron, Inc.

Find us at:

Documents / Resources

Keychron K3 Mechanical Bluetooth Keyboard [pdf] User Guide
K3, K3 Mechanical Bluetooth Keyboard, K3, Mechanical Bluetooth Keyboard, Bluetooth Keyboard, Keyboard

References

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