Keychron K4 Pro Mechanical Keyboard User Manual

1. Увод

The Keychron K4 Pro is a QMK/VIA wireless custom mechanical keyboard designed for versatility and a premium typing experience. It features hot-swappable switches, allowing for easy customization without soldering, and offers both wireless Bluetooth 5.1 and wired USB Type-C connectivity. Compatible with macOS, Windows, and Linux, the K4 Pro provides a robust platform for both productivity and gaming.

Figure 1: Keychron K4 Pro 96% Layout Mechanical Keyboard.

2. Шта је у кутији

The Keychron K4 Pro Fully Assembled Version package includes the following components:

• 1x Fully Assembled Keyboard (including PCB, Steel Plate, Sound Absorbing Foam, Silicone Bottom Pad, 6 Sets of PCB Screw-In Stabilizers)
• 1x Set of Keycaps (Double-Shot PBT)
• 1x Set of Switches (Keychron K Pro Red)
• 1к кабл типа-А до типа-Ц
• 1к Скидач прекидача
• 1к извлакач за кључеве
• 1к Сцревдривер

Figure 2: Package Contents of the Keychron K4 Pro.

3. Подешавање

3.1 Почетно пуњење

Before first use, connect the keyboard to a power source using the provided USB Type-C cable. The keyboard includes a Lithium Polymer battery. A full charge ensures optimal wireless performance.

3.2 Режими повезивања

The K4 Pro supports both wireless Bluetooth and wired USB Type-C connections.

• Бежични Блуетоотх: The keyboard can connect to up to three devices simultaneously via Broadcom Bluetooth 5.1. Use the switch on the side of the keyboard to select Bluetooth mode.
• Wired USB Type-C: For a direct connection and 1000 Hz polling rate, use the provided USB Type-C cable. Select the 'Cable' mode using the switch on the side.

Figure 3: Multi-device Bluetooth connectivity.

3.3 Промена оперативног система

The K4 Pro includes keycaps for both Windows and macOS. Use the system switch located on the side of the keyboard to select the appropriate operating system mode (Mac/iOS or Windows/Android) for correct key functionality.

4. Упутство за употребу

4.1 QMK/VIA Programmability

The Keychron K4 Pro is fully programmable with QMK/VIA firmware, allowing you to remap keys, create macros, and customize keyboard layers. To use VIA:

1. Connect the K4 Pro to your device via USB cable.
2. Download the appropriate .JSON file for your K4 Pro model from the Keychron webсајту.
3. Access the VIA web application (or desktop client).
4. Load the .JSON file into VIA.
5. Drag and drop desired keys or macro commands to remap any key on any system (macOS, Windows, or Linux).

The keyboard features an ultra-low-power ARM Cortex-M4 32-bit STM32L432 MCU with 128K Flash for advanced customization.

Figure 4: VIA software interface for key remapping.

4.2 Прекидачи са могућношћу замене током рада

The K4 Pro features hot-swappable sockets, enabling you to change mechanical switches without soldering. This allows for personalized typing experiences.

1. Use the provided switch puller to carefully remove the existing switch.
2. Align the pins of the new 3-pin or 5-pin MX style mechanical switch with the sockets on the PCB.
3. Gently press the new switch into place until it clicks. Ensure it is fully seated.

The PCB-mounted screw-in stabilizers provide a smoother typing experience for larger keys like the space bar, shift, enter, and backspace.

Figure 5: Hot-swappable switch installation.

Figure 6: Variety of hot-swappable switches.

4.3 White LED Backlight

The K4 Pro features 14 types of white LED backlight settings. You can adjust the brightness and effect speed directly from the keyboard. Refer to the keyboard's quick start guide for specific key combinations to control the backlight.

Figure 7: White LED Backlight in operation.

4.4 Ergonomic Support

The keyboard is designed with adjustable feet, offering 3°, 7°, and 10° typing angles to enhance ergonomic comfort during extended use.

Figure 8: Adjustable ergonomic angles.

5. Одржавање

5.1 Чишћење

• Користите меку, суву крпу да обришете површину тастатуре.
• За дубље чишћење, уклоните капице тастера помоћу приложеног алата за извлачење капица тастера и користите компримовани ваздух да бисте очистили остатке између прекидача.
• Избегавајте употребу јаких хемикалија или абразивних материјала.

5.2 Нега прекидача

The K Pro Red switches are pre-lubed for optimal performance. If replacing switches, ensure proper alignment to avoid bending pins. Store spare switches and keycaps in a clean, dry place.

КСНУМКС. Решавање проблема

• Тастатура се не повезује преко Bluetooth-а: Ensure the keyboard is in Bluetooth mode and fully charged. Try re-pairing the device. Check if the keyboard is already connected to three devices; if so, disconnect one.
• Тастери не реагују: Check if the keyboard is in the correct operating system mode (Mac/Windows). If using wireless, ensure sufficient battery. For specific keys, consider hot-swapping the switch to rule out a faulty switch.
• Позадинско осветљење не ради: Ensure the backlight is enabled and brightness is adjusted. Check battery level if in wireless mode.
• VIA software issues: Ensure you have downloaded the correct .JSON file for your specific K4 Pro model from the official Keychron website. Connect the keyboard via USB for VIA programming.
• Повремена повезаност: Ensure no strong interference sources are nearby. Try updating Bluetooth drivers on your computer. If issues persist, try a wired connection.

7. Спецификације

Слика 9: Експлодирао view of Keychron K4 Pro internal components.

8. Гаранција и подршка

Keychron products are covered by a manufacturer's warranty. For detailed warranty information, product support, or to contact customer service, please visit the official Keychron webсајт. Сачувајте доказ о куповини за потребе гаранције.

Official Keychron Webсајт: ввв.кеицһрон.цом