Brother HL-L6400DWT
Brother · Model HL-L6400DWT
Fast, high-quality printing for higher print volumes- Featuring a business durable design with an impressive print speed of up to 52 pages per minute, this high-performance printer is ideal for mid sized workgroups. Plus, it offers up to 1200 x 1200 dpi resolution for crisp, clear text and excellent graphics. Flexible paper handling - Easily handle your large print jobs via an adjustable 520-sheet capacity paper tray and 50-sheet capacity multi-purpose tray. Additional optional paper trays are available in 250-sheet or 520-sheet capacities, enabling users to configure the printer with multiple trays in a way that best meets their application requirements – up to 1,610 sheet total capacity. Large, expandable output capacity - 250-sheet capacity output, plus an add-on mailbox/sorter/stacker option is useful for workgroups that want to assign bins to various users, sort output into separate bins, or require additional output capacity – up to 1,050 total sheets. Flexible network connectivity - Built-in wireless 802.11b/g/n and Gigabit Ethernet network interfaces allow you to share the HL-L6400DWT with multiple users on your network. Convenient mobile device printing - Print from your mobile device via‡: AirPrint®, Google Cloud Print™ 2.0, Mopria®, Brother iPrint&Scan, Cortado Workplace, Wi-Fi Direct®, and NFC. Automatic two-sided printing- Use the duplex printing feature to produce professional two-sided brochures, documents and booklets. Advanced security features - Includes an integrated NFC card reader and Active Directory® support for network user authentication to help protect against unauthorized access to the device. Other security features include: Secure Function Lock, Enterprise Security (802.1x), IPSec, Secure Print, SSL/TLS and more. Adjustable, 1.8" color Touchscreen display - Offers intuitive menu navigation and printing from popular business cloud services‡ including: DROPBOX, GOOGLE DRIVE™, ONEDRIVE®, and more.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Poor print quality
HighSymptoms: Density too light / dark, banding, streaks, non-uniform image, blotches.
Root cause: Print head / laser optics contamination, film / cartridge issue, or density-calibration drift.
Film jam / transport fault
MediumSymptoms: Film jams in the pick-up or transport, mis-feeds, or multi-feeds.
Root cause: Worn pick-up rollers, a transport-roller fault, or a mis-loaded film cartridge.
Density / calibration fault
MediumSymptoms: Prints do not match the reference, calibration fails, densitometer error.
Root cause: Internal densitometer or the calibration routine.
DICOM / queue fault
MediumSymptoms: Jobs stuck in the queue, printer offline to modalities, association failures.
Root cause: Network / DICOM configuration or the controller board.
Thermal head / laser fault
MediumSymptoms: Whole-image defect, print-engine error.
Root cause: Thermal print head or the laser / optics module.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Pick-up / transport rollers
Class Periodic replacementRel. cost $$R&R Moderate
Thermal print head / laser optics
Class Periodic replacementRel. cost $$$R&R Difficult
Internal densitometer
Class Major service partRel. cost $$R&R Moderate
Controller / network board
Class Major service partRel. cost $$R&R Moderate
Film (media)
Class ConsumableRel. cost $$R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Pick-up / transport rollers | Periodic replacement | $$ | Moderate |
| Thermal print head / laser optics | Periodic replacement | $$$ | Difficult |
| Internal densitometer | Major service part | $$ | Moderate |
| Controller / network board | Major service part | $$ | Moderate |
| Film (media) | Consumable | $$ | Easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Poor print quality
- Print the built-in test / SMPTE pattern.
- Run the density calibration.
- Clean the print head / laser optics per the manual.
- Confirm the film type / cartridge matches the printer setting.
- Replace the print head or optics module if a whole-image defect persists.
Symptom: Film jam or jobs stuck
- Clear the jam and note the location.
- Inspect and clean the pick-up and transport rollers.
- For queue problems, check the DICOM association and network.
- Restart the print controller.
- Send a test job from a modality to confirm.
Technical Specs
- Height
- 16.5 in
- Length
- 15.6 in
- Weight
- 37.9 lbs
- Width
- 15.7 in
Documents & Manuals
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