Brother DH4-B980 instruction manual Changing in the cutting block operation time

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9. STANDARD ADJUSTMENTS

9-10.Changing the knife cutting length (Replacing the cutting block)

Illustration (A)

(1)

(3)

(2)

0969Q

0970Q

1.Grind or replace the cutting block after changing the knife cutting length.

*When replacing the cutting block with a new one, be sure to adjust the contact between the knife and the cutting block. (Refer to the next page.)

2.Loosen the screw (1), and then remove the cutting block (2).

Because the knife cutting length is set in accordance with the length of the cutting block, grind the cutting block as shown in (A ) in the above illustration.

Cutting block length A = Knife cutting length + 1.5 mm

3.When installing the cutting block, push in the pin (3) and then tighten the screw (1).

*Do not use knives with different numbers on the same cutting block. If knives with different numbers are used, accurate cutting will not be possible and the knife will be damaged.

Changing in the cutting block operation time.

If cutting is not possible even when the air pressure is increased to 0.3 MPa, memory switch No. 18 can be used to increase the cutting block ON time. (Refer to “6-6. Using the memory switch”.)

RH-9800

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Contents DH4-B980 RH-9800 Safety indications and their meanings Safety InstructionsEnvironmental requirements InstallationMaintenance and inspection CleaningSewing Needle bar guard Contents Names of Each Part Specifications SpecificationsTable processing diagram InstallationInstalling the machine head Installing the motorRaising the machine head Installing the oil containerLowering the machine head Tightening the V-belt Installing the spool standInstalling the air unit and the valve assembly Installing the control boxConnecting the knife valve cables Connecting the ground wires and the wirings Connecting the air tubes To decrease the air pressure Installing the air hosesAdjusting the air pressure To increase the air pressureConnecting the power cord Filling the arm oil tank LubricationAdding oil Lubrication1116Q 0862Q 1117Q Correct USE Initializing settingsChanging the lower thread and gimp trimming Checking the direction of machine operation Threading the upper thread Installing the needleFor upper and lower thread trimming specifications -01,-02 For upper thread trimming specificationsThreading the lower thread Threading the gimp Setting the materialOperation panel part names Panel button and switch namesFront panel part name Selecting a program number Changing the modeChanging the cutting timing Setting a program Setting the buttonhole length Setting the shape of the eyeletSetting the offset Setting the tacking lengthSetting the knife position compensation Setting the cutting spaceP2. Setting Y correction P1. Setting X correctionP3. Setting θ 1 correction P4. Setting θ 2 correction OFF Using the memory switchOn Low speed List of error codes Sewing Using the Emergency Stop switchAutomatic mode Manual mode or in automatic mode1164Q 1165Q Upper thread tension Adjusting the thread tensionTension adjustment Stroke adjustmentExplanation of the cutting space function Needle and knife positionRelationship between knife position and eyelet shape Knife position compensation function Counting down to zero method Using the production counterResetting the production counter Displaying the production counterProgramming procedure Using a cycle programSetting the feed bracket to the front position Using feed mode Using manual mode Changing the cycle program counter Setting the number of home position cyclesReturning to the home position Draining the oil Cleaning and MaintenanceLooper height Standard AdjustmentsAdjusting the height of the spreader and looper Spreader heightAdjusting the needle and looper timing Adjusting the loop stroke Adjusting the clearance between the looper and needle Adjusting the height of the needle barAdjusting the spreader mounting positions Adjusting the needle guardAdjusting the needle racking width stitch width Adjusting the spreader timingChanging in the cutting block operation time Filing the cutting surface of the cutting block Replacing the knife Adjusting the cutting pressureMeasuring the opening amount Adjusting the cloth opening amountAdjusting the trimming of the lower thread and gimp Adjusting the trimming of the upper threadAdjusting the gimp length after trimming Sub presser Lower thread presserFront panel DIP switches Summary of DIP SwitchesCircuit board DIP switches Needle breaks TroubleshootingProblem Cause Remedy Thread breaks Skipped stitches occurLower thread is not cut ProblemCleanly Remedy Upper thread is not cut15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone

DH4-B980 specifications

The Brother DH4-B980 is an innovative and advanced sewing and embroidery machine designed for both professional use and home enthusiasts. Recognized for its robust performance and user-friendly features, the DH4-B980 stands out in the market.

One of the primary features of the Brother DH4-B980 is its impressive sewing speed, allowing users to achieve up to 1,000 stitches per minute. This heightened efficiency is complemented by a range of built-in stitches, offering over 150 different stitch options, including decorative, quilting, and utility stitches. This variety equips users with the creativity to tackle a broad spectrum of sewing projects, from simple alterations to intricate embroidery designs.

The Brother DH4-B980 also features advanced embroidery capabilities. With an expansive embroidery area of 10 x 6 inches, users can work on larger designs without the need for rehooping. Additionally, the machine comes with pre-installed embroidery designs and fonts, ensuring that users have a multitude of options right at their fingertips. The user-friendly LCD touchscreen display allows for easy navigation through features, adjustments, and design selections, making the embroidery process intuitive.

In terms of technology, the Brother DH4-B980 incorporates the advanced My Custom Stitch feature, enabling users to create personalized stitch patterns. This functionality sets the machine apart, as it allows for customization to fit specific project needs or personal styles. The machine is also equipped with automatic needle threading and a quick-set drop-in bobbin, adding to overall convenience and ease of use.

Another noteworthy aspect is the built-in sewing assistant, providing tips and settings based on the selected stitch type. This feature enhances the learning curve for beginners while catering to the needs of more experienced sewists. The machine’s high-quality LED lighting illuminates the workspace, ensuring clarity and precision in sewing, particularly in low-light conditions.

Durability is achieved through quality construction and materials, ensuring that the actual performance matches user expectations even after extensive use. The Brother DH4-B980 is also designed with versatility in mind, catering to quilters, fashion designers, and hobbyists alike.

In summary, the Brother DH4-B980 combines speed, versatility, and advanced technology in a single sewing and embroidery machine. Its user-friendly features and innovative capabilities make it an excellent choice for anyone looking to elevate their sewing experience.
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