FUJIH04S XK04860 H04SF working head motherboard
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Product Introduction – FUJIH04S XK04860 H04SF Working Head Motherboard
Part Number: XK04860
Model: H04SF Working Head
Component Name: Working Head Motherboard
Category: Electronics / Control Board
Applicable Equipment: Fuji NXT / NXT II Machines with H04SF Heads
Description:
The XK04860 motherboard is the main control board used in the Fuji H04SF working head, a high-precision, compact head model designed for mounting small electronic components at high speed.
This motherboard serves as the central processing and signal routing hub for the working head, managing all essential operations such as nozzle movement, vision system communication, vacuum sensing, and motor control. It ensures accurate coordination between mechanical and electronic subsystems within the head.
Key Features:
Designed for use in the H04SF working head
Controls head functions: nozzle actuation, vacuum detection, Z/R axis control
Interfaces with machine control system and vision processing unit
Compact and optimized layout for high-speed signal processing
Built-in connectors for sensors, solenoids, and encoders
Typical Applications:
SMT pick-and-place operations in high-speed production lines
Component placement using H04SF heads on NXT and NXT II platforms
Real-time coordination of mechanical and vision-based tasks
Technical Highlights:
High-speed PCB with multi-layer design
ESD-protected interfaces for sensor inputs
Surface-mount and through-hole mixed component layout
Integrated thermal protection and signal conditioning circuits
Compatibility:
Fully compatible with Fuji NXT / NXT II machines using the H04SF working head
Works with associated components like the camera unit, solenoid valve, and vacuum sensor
Related Components – XK04860 H04SF Working Head Motherboard
| Part Number | Component Name | Function / Description |
| XK04860 | H04SF Working Head Motherboard | Main controller board for H04SF head operations |
| FUJIH11352 | Solenoid Valve | Controls air flow for nozzle movement and pickup/release |
| FUJIH4897A | Working Head Bearing | Supports internal mechanical motion (Z-axis/R-axis rotation) |
| FUJIH65860 | R-Axis Bearing | Allows rotation of the nozzle assembly |
| FUJIS4033G | Negative Pressure Sensor | Monitors vacuum for component pickup confirmation |
| FUJIH5060A | Vision Camera Unit | Captures component and fiducial images for alignment |
| FUJIH1127F | Vision Cable Assembly | Connects camera to vision processor |
| FUJIH5533D | Nozzle Holder Assembly | Mechanically mounts and holds the nozzle during placement |
| FUJIH1098A | Head Power Cable | Supplies power from machine to the working head |
| FUJIH7306A | PCB Support Bracket | Holds the motherboard securely in place within the head housing |
These components collectively support the electromechanical and optical functions of the H04SF working head and ensure precise component handling in Fuji NXT/NXT II machines.
Related Part Numbers – XK04860 H04SF Working Head Motherboard
| Part Number | Part Name | Description / Function |
| XK04860 | H04SF Working Head Motherboard | Main control board for the H04SF head |
| FUJIH11352 | Solenoid Valve | Controls air supply for nozzle up/down and part pickup/release |
| FUJIH4897A | Working Head Bearing | Mechanical support for Z-axis and R-axis motion |
| FUJIH65860 | R-Axis Bearing | Allows nozzle rotation on the R-axis |
| FUJIS4033G | Negative Pressure Sensor | Detects vacuum status during part pickup |
| FUJIH5060A | Vision Camera Unit | Captures images for component alignment and recognition |
| FUJIH1127F | Vision Cable Assembly | Connects camera to the image processing unit |
| FUJIH5533D | Nozzle Holder Assembly | Mounts the nozzle and holds it during placement |
| FUJIH1098A | Head Power Cable | Supplies power to the working head motherboard |
| FUJIH7306A | PCB Bracket / Mounting Frame | Secures the motherboard inside the H04SF head |
| FUJIPP0341 | H04SF Head Base Plate | Structural base for mounting internal components of the working head |
FAQ Guide – FUJIH04S XK04860 H04SF Working Head Motherboard
Part Number: XK04860
Component Name: H04SF Working Head Motherboard
Applicable Model: Fuji NXT / NXT II Machines (with H04SF Head)
Category: Control PCB / Electronics
1. What is the function of the XK04860 motherboard?
The XK04860 is the main control board inside the H04SF working head. It manages all internal head functions, including:
Nozzle actuation
Z-axis and R-axis motor control
Vacuum sensing
Communication with the machine’s main controller and vision system
2. Which head is this part compatible with?
Specifically designed for the H04SF working head
Compatible with Fuji NXT and NXT II platforms using H04SF heads
3. What are the signs of motherboard failure?
Nozzle movement failure
Loss of vacuum detection
Camera or sensor communication errors
Head not recognized by the machine
Head alarm codes or head initialization failure
4. How is the motherboard diagnosed?
Use Fuji machine diagnostics to check head communication
Inspect for visible damage (burn marks, broken connectors)
Test voltages and signals with a multimeter or oscilloscope (by qualified technician)
Swap with a known-good board (if available) for verification
5. Can the motherboard be replaced individually?
Yes. It can be replaced separately from the full head assembly, but:
Static protection (ESD) is essential
Firmware/config may require matching or updating
Realignment or recalibration may be needed post-installation
6. What tools and precautions are required?
ESD-safe tools and grounding strap
Torque driver or screwdriver for internal screws
Clean, static-free workspace
Careful cable reconnection using original harnesses
7. Related components to check or replace with the motherboard
| Part Number | Component Name | Function |
| FUJIH11352 | Solenoid Valve | Controls air flow to nozzle |
| FUJIS4033G | Vacuum Sensor | Detects pickup status |
| FUJIH5060A | Vision Camera Unit | Captures component images |
| FUJIH65860 | R-Axis Bearing | Allows nozzle rotation |
| FUJIH1127F | Vision Cable Assembly | Connects camera to motherboard |
| FUJIH5533D | Nozzle Holder | Mechanically mounts the nozzle |
8. Storage & Handling Instructions
Store in anti-static packaging
Avoid bending or mechanical shock
Do not touch components or connector pins with bare hands
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Contact:
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