- On sale!
- -42%
- New
Brother LK6090001 Printhead Carriage Unit (LK5399001) for MFC-J Series
- Write a review
$219.00
$127.02
Save 42%
Genuine OEM Brother LK6090001 (superseding LK5399001) printhead carriage unit engineered for Brother MFC-J series high-output multifunctional inkjet printers.
OEM Service & Replacement Assembly
Original Brother LK6090001 / LK5399001 Printhead Carriage Unit
OEM Part Number: LK6090001 / LK5399001 | A4 Inkjet Multifunction Scanning Carriage Chassis & Head Retention Unit
A4 Cartridge-Based Inkjet Architecture & Revision Notice
The Brother LK6090001 Printhead Carriage Unit (cross-referenced and superseded in factory production runs by LK5399001) is an authentic OEM scanning carriage chassis engineered for Brother’s popular generation of A4 cartridge-based inkjet multifunction printers (including the MFC-J430W, MFC-J625DW, MFC-J825DW, MFC-J835DW, DCP-J525N, DCP-J725DW, and DCP-J925DW). This platform incorporates refined guide rail bushings, revised ribbon cable clamps, and an integrated optical sensor bay tailored for LC71 / LC75 / LC79 / LC12 / LC17 ink delivery architectures.
Product Overview
The Original Brother LK6090001 / LK5399001 Printhead Carriage Unit is a factory-original electro-mechanical scanning carriage frame designed to restore precise printhead guidance, correct platen clearance, and stable bidirectional registration across compact Brother DCP-J and MFC-J multifunction printers. Riding on the central precision steel carriage shaft, this module securely seats the piezo printhead module, preventing mechanical skew, rotational play, and platen strikes during high-speed document output.
Molded from high-rigidity polyoxymethylene (POM) engineering resin with integrated self-lubricating sleeve bushings, the LK6090001 / LK5399001 minimizes friction along the guide rod, protecting the carriage (CR) drive motor against overload and thermal shutdown. The chassis includes molded retention channels for the 4-line fluid supply tubing connected to off-carriage front-loading ink bays (LC71/LC75/LC79/LC12 series). It also features an exact-tolerance mounting pocket for the carriage encoder PCB (CR sensor), maintaining optical alignment with the transparent linear timing slit film to prevent horizontal ghosting, misregistration, and drive motor stall errors.
Part Information
| Product Name | Original Brother Printhead Carriage Unit |
| OEM Manufacturer | Brother Industries, Ltd. (Nagoya, Japan) |
| Primary OEM Part Numbers | LK6090001 / LK5399001 |
| Component Classification | Desktop A4 Scanning Carriage Chassis & Printhead Retainer |
| Supported Media Format | A4 / Letter / Legal (up to 216 × 356 mm / 8.5 × 14 in) |
| Compatible Printhead Engine | Brother LK7133001 / LK6005001 Piezo Printhead Module |
| Ink Cartridge Series Pairing | Brother LC71, LC73, LC75, LC77, LC79, LC12, LC17, LC40, LC1240 Series |
| Manufacturing Standard | 100% Genuine Brother Factory Original Service Replacement Part |
Technical Specifications
| Chassis Material | High-rigidity molded polyoxymethylene (POM) engineering polymer |
| Bushing Architecture | Dual low-friction sliding sleeve bushings calibrated for standard 10 mm A4 steel carriage guide shaft |
| CR Sensor Mounting | Integrated rear clip pocket securing the optical photo-interrupter CR encoder PCB |
| Fluid Line Management | Molded 4-channel tube guide saddle routing flexible continuous ink lines without pinching |
| FFC Ribbon Protection | Molded cable strain-relief clamps preventing conductor bending fatigue and shielding contacts |
| Drive Belt Interface | Molded toothed timing belt clamp with anti-backlash spring tension seat |
| Operating Temperature Range | 10°C to 35°C (50°F to 95°F) |
| Operating Humidity Range | 20% to 80% RH non-condensing |
| Net Physical Weight | Approx. 84 grams (chassis frame alone) / Packaged: ~0.16 kg |
Key Features & Operational Advantages
- Stable Platen Gap Control: Precision-molded sleeve bushings maintain consistent nozzle-to-paper clearance across the platen, eliminating corner strikes and ink smear on heavier media.
- Smooth Fluid Routing: Curved tube saddle anchors the 4-tube ink lines securely, preventing line sagging, kinking, or interference with the scanner frame during rapid carriage sweeps.
- Optical Encoder Alignment: Rigid sensor mounting bracket keeps the CR optical read head perpendicular to the transparent linear timing slit strip, preventing position reading drift and ghosting.
- Direct 1:1 OEM Fitment: Built to exact Brother factory engineering tolerances, allowing direct transfer of the original piezo printhead, damper manifold, grounding springs, and belt tensioners.
CRITICAL TECHNICAL & SERVICE ADVISORY
1. Platform Incompatibility with T-Series and Earlier J-Series: The LK6090001 / LK5399001 is designed specifically for LC71/LC75-generation MFC-J and DCP-J machines. It is not interchangeable with refill tank models (such as T300/T500W which use D00078001 / D00592001 or T520W which use D02E07001 / D02PY4001), nor is it fully identical to older LC39-generation units (LK3211001). Check chassis clips and damper seats before ordering.
2. Guide Rail Cleaning & Lubrication Protocol: Prior to mounting the replacement carriage onto the steel guide shaft, clean away all dried ink aerosol, paper dust, and hardened grease using an alcohol-dampened lint-free cloth. Apply an even film of Brother-approved synthetic PTFE grease (Floil / Krytox formulation). Running the carriage dry will cause excessive friction and trigger Error 48, Error 49, or Error 4F drive motor faults.
3. Linear Timing Strip (Encoder) Threading Care: Carefully thread the transparent linear timing strip through the slotted center of the optical sensor. Never touch the optical strip with bare hands or crease the film. If smudged, clean gently with a dry microfiber cloth—never use alcohol or solvent cleaners on the timing strip, as solvents will dissolve the fine printed index marks.
4. Post-Assembly Maintenance Routine: Following mechanical reassembly, access Brother Maintenance Mode (`Menu` > `Mono Start` > `Up Arrow 4 times` on key models) and execute:
• Function 68: Automatic printhead alignment and sensor check.
• Function 77: Print the comprehensive all-nozzle check and registration test pattern to verify proper vertical and horizontal drop placement.
Compatible Models & Systems
| Printer Platform | OEM Carriage Part No. | Supported Machine Configuration |
|---|---|---|
| Brother MFC-J430W | LK6090001 / LK5399001 | A4 Compact Wireless Color Inkjet All-in-One |
| Brother MFC-J625DW | LK6090001 / LK5399001 | A4 Wireless Color All-in-One with Auto Duplex & Touchscreen |
| Brother MFC-J825DW / MFC-J835DW | LK6090001 / LK5399001 | A4 Premium Wireless Duplex All-in-One with Disc Printing |
| Brother DCP-J525N / DCP-J525W | LK6090001 / LK5399001 | A4 3-in-1 Wireless Inkjet Multifunction Printer |
| Brother DCP-J725DW / DCP-J925DW | LK6090001 / LK5399001 | A4 Wireless Duplex 3-in-1 Multifunction Units with ADF |
| Earlier J-Series (Reference) | LK3211001 | Incompatible: Older models (DCP-J125 / MFC-J415W) use LK3211001 chassis |
*Model Differentiation Note: Specifically designed for A4 cartridge-based MFC-J and DCP-J models listed above using LC71/LC75 cartridge lines. Confirm printer serial plate markings before unpacking.
Terms, Warranty & Customer Protection
Condition: 100% Brand New, Genuine OEM Factory-Original Brother Replacement Service Component in sealed factory protective packaging.
Manufacturer Warranty: Covered under Brother's standard OEM service parts limited warranty against materials and manufacturing defects out-of-box prior to mounting. No warranty covers damage resulting from excessive force, broken retention clips, stripped mounting screw bosses, or dry guide shaft friction.
Return Policy: Precision electro-mechanical service part. Unopened, factory-sealed packaging is eligible for standard commercial return. Once mounting screws have been installed or the carriage seated onto a printer chassis rail, returns cannot be accepted due to mechanical stress and wear risks.
LK6090001
351 Items
