Keychron K3MAX Wireless Mechanical Keyboard User Manual

: June 15, 2024
: Keychron

Table of Contents

INTHE BOX
QUICK START GUIDE
K3 Max BLUETOOTH MECHANICAL KEYBOARD SPECIFICATIONS
K3 Max BLUETOOTH MECHANICAL KEYBOARD OVERVIEW
DEFAULT KEY LAYOUT
KEY DESCRIPTION
FUNCTION DESCRIPTION:
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Keychron K3MAX Wireless Mechanical Keyboard

Keychron K3MAX Wireless Mechanical Keyboard

INTHE BOX

Keychron K3 Max Bluetooth Mechanical Keyboard x 1
Type-C Cable x 1
Manual x 1
Quick Start Guide x 1
Extra Keycaps Set x 1
Type-A to Type-C Adapter x 1
Type-A 2.4GHz Receiver x 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.
Quick Start Guide

Connect 2.4GHz Receiver

Connect the 2.4GHz receiver to the device USB port.
Switch toggle to 2.4GHz mode

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.

Connect Bluetooth

Switch toggle to Bluetooth
Press In + 1 (for 4 seconds) and pair with device named Keychron K3 Max.

Connect Cable

Connect Cable

Switch toggle to Cable

The VIA Key Remapping Software

Please visit usevia.app to use the online VIA software to remap the keys.
If the VIA cannot recognize your keyboard, please reach our support to get the instruction.
The VIA Key Remapping Software

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

The Layers

There are four layers of key settings on the keyboard. The layer O 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 O 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 Backlight

Press fn + Q to change the lighting effect
Press fn + tab to turn the backlight on/off

Adjust The Backlight Brightness

Press fn + W to increase the backlight brightness
Press fn + 5 to decrease the backlight brightness

Adjust The Backlight Speed

Press fn + T to increase the light effect speed
Press fn + G to decrease the light effect speed

Warranty

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.

Watch The Building Tutorial On Our Website

If you are building the keyboard for the first time, we highly recommend you watch the building tutorial video on ourwebsite first, then start building the keyboard yourself.

Factory Reset

Troubleshooting? Don’t know what’s going on with the keyboard?

Download the right firmware and QMK Toolbox from our website.
Unplug the power cable and switch the keyboard to Cable mode.
Remove the space bar keycap to find the reset button on the PCB.
Hold the reset key first, then plug the power cable into the keyboard.
Release the reset key after 2 seconds, and the keyboard will now enter DFU mode.
Flash the firmware with the QMK Toolbox.
Factory reset the keyboard by pressing fn + J + Z (for 4 seconds).

Step by step guide can be found on our website.

K3 Max BLUETOOTH MECHANICAL KEYBOARD SPECIFICATIONS

Number of keys : 84
Switch type: Mechanical
Battery: 15SOmAh
Charging time: Around 3 hours
Charging port: USB Type-C
Mode: Bluetooth /Wired/ 2.4GHz
Bluetooth operating distance: Within 10 meters (open space)
Name of Bluetooth device: Keychron K3 Max

LED STATUS OVERVIEW

Function	LED Location	Status
Charging	Battery Indicator	Low Power – Red Light Blinking Charging – Static

Red
Full charged – Static Green
Bluetooth| Bluetooth Indicator| Switching – Fast Blinking Paired – Light Off Pairing – Slow Blinking
2.4G| 2.4G Indicator| Reconnecting-Fast Blinking Paired – Light Off Paring – Slow Blinking

K3 Max BLUETOOTH MECHANICAL KEYBOARD OVERVIEW

Bluetooth indicator
2.4G Indicator
Win/Android Mac/iOS (OS Toggle)
2.4G /Cable/ BT(Connection Mode Toggle)
Charging port

DEFAULT KEY LAYOUT

LAYER 0 : This layer will be activated when your keyboard’s system toggle is switched to Mac.
Default Key Layout

LAYER 1 : This layer will be activated when your keyboard’s system toggle is switched to Mac and press the fn/M0(1) key.
Default Key Layout

LAYER 2: This layer will be activated when your keyboard’s system toggle is switched to Windows.
Default Key Layout
LWin = Left Windows LAlt = Left Alt RAlt = Right Alt RCtl = Right Ctrl

LAYER 3: This layer will be activated when your keyboard’s system toggle is switched to Windows and press the fn/M0(3) key.
Default Key Layout

KEY DESCRIPTION

Key Description

Ser-| Screen Brightness Decrease
Ser+| Screen Brightness Increase
Bright-| Backlight Decrease
Bright+| Backlight Increase
Prvs| Previous
Play| Play/Pause
Next| Next
Mute| Mute
Vol-| Volume Decrease
Vol+| Volume Increase
RGB Toggle| Turn Backlight on/off
RGBMd+| RGB Mode Next
Key Description

FUNCTION DESCRIPTION:

CHARGING

Plug the cable into a USB port and plug the other end into the keyboard port. Charging Indicator:
A red light will stay on while charging; Fully charged in around 5 hours, a green battery indicator will appear.

*The K3 Max keyboard is compatible with all USB ports. Please use a SV 1A adapter or USB 3.0 for the best performance. The K3 Max can be charged in Bluetooth/on/off mode.
**This product supports up to SV charging voltage and 1A charging current. We are not responsible for any problems caused by improper charging.

2.4GHZ /CABLE/ BLUETOOTH MODE (MODE TOGGLE SWITCH) 2.4GHZMODE

Connect the 2.4GHz receiver to your device’s USB Port.
Switch the toggle switch to the 2.4GHz option. The keyboard will automatically connect to your device.

Press the key combination “Fn” + “4” to enter the forced pairing mode. During this period, it is recommended that the keyboard be within 20cm of the receiver.

BWETOOTH MODE

Switch the toggle switch to the Bluetooth option.
Backlighting will be turned on.
Hold “fn+1” key for 4 seconds to activate Bluetooth pairing (the Bluetooth indicator fast flashes for 3 minutes to detect pairing).
Search for the Bluetooth device “Keychron K3 Max” on your device and connect it (the Bluetooth indicator goes off after successful pairing).

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

SWITCH BWETOOTH DEVICES
Short press key combination “fn” + “1” / “fn” + “2” / “fn” + “3” to switch to other device.

RECONNECT:

Switch the keyboard to the Bluetooth option to activate the keyboard.
The Bluetooth indicator flashes for 3 seconds and automatically pairs with the last paired device.
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.

WIRED MODE

Switch the toggle switch to the Cable option (it only works when a USB cable is plugged in).
Connect our cable with your PC and keyboard.
Backlighting will be turned on.
*Under Wired Mode, keyboard will not enter into Battery Saver Mode.

TURN OFF THE KEYBOARD
Switch the keyboard to the OFF option.

BACKLIGHT SETTING

Short press[ ] to switch between different types of lighting effects.
When backlighting is on, press[ ] button to switch among them.

OS TOGGLE SWITCH

MAC/iOS
Switch the toggle to Mac/iOS when the keyboard is connected to a Mac or iOS operating system.
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.
INPUT METHOD SWITCH
ForiOS:
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 key 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.