Brother DH4-B980 instruction manual Filing the cutting surface of the cutting block

Page 56

9. STANDARD ADJUSTMENTS

9-11. Adjusting the contact between the knife and the cutting block

0971Q

1. Knife incision

2. Knife incision

3. Two knife

4. Partial knife

is correct

is too deep

incisions

incision

19mm

3 mm

0972Q

1.Remove the cutting block. (Refer to the previous page.)

2.If the knife incision on the surface of the cutting block is very deep, if there are two or more incisions on the cutting block because different knives were used, or if only part of the incision has been made, grind the surface of the cutting block smoothly until a single knife incision can still be seen faintly.

3.The cutting pressure over the whole of the cutting block should be uniform so that the material will be cut cleanly.

Grind the surface of the cutting block so that the knife incision will be uniform over the whole of the cutting block.

*The cutting block can be filed until its height is 19 mm.

4.If the material cannot be cut cleanly even though the cutting block has been ground correctly, check whether the tip of the knife is worn.

*If the tip is worn, replace the knife.

Do not use the old cutting block after the knife has been replaced, otherwise it may damage the tip of the knife.

Adjusting the contact between the knife and the cutting block

To see the knife incision more easily, color the cutting surface of the cutting block with a marker pen.

1.Operate the cutting block three times with the knife making a mark on it each time.

2.Adjust the position of the cutting block or contact between the knife and the cutting block until the knife consistently makes a mark in the same place.

Filing the cutting surface of the cutting block

Use a flat file for filing.

1.Filing the cutting surface of the cutting block on which the knife incision breaks off or is shifted 1-1. Grip the cutting block in a vise.

1-2. File the surface of the cutting block smoothly until the knife incision is eraced away.

2.Filing the cutting surface of the cutting block in which knife incision is deep 2-1. Grip the cutting block in a vise.

2-2. File the surface of the cutting block smoothy until a single knife incision can still be seen faintly.

50

RH-9800

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Contents DH4-B980 RH-9800 Safety Instructions Safety indications and their meaningsInstallation Environmental requirementsSewing CleaningMaintenance and inspection Needle bar guard Contents Names of Each Part Specifications SpecificationsInstallation Table processing diagramInstalling the motor Installing the machine headLowering the machine head Installing the oil containerRaising the machine head Installing the spool stand Tightening the V-beltConnecting the knife valve cables Installing the control boxInstalling the air unit and the valve assembly Connecting the ground wires and the wirings Connecting the air tubes Installing the air hoses Adjusting the air pressureTo increase the air pressure To decrease the air pressureConnecting the power cord Lubrication Adding oilLubrication Filling the arm oil tank1116Q 0862Q 1117Q Changing the lower thread and gimp trimming Initializing settingsCorrect USE Checking the direction of machine operation Installing the needle Threading the upper threadThreading the lower thread For upper thread trimming specificationsFor upper and lower thread trimming specifications -01,-02 Setting the material Threading the gimpFront panel part name Panel button and switch namesOperation panel part names Changing the cutting timing Changing the modeSelecting a program number Setting a program Setting the shape of the eyelet Setting the buttonhole lengthSetting the tacking length Setting the offsetSetting the cutting space Setting the knife position compensationP3. Setting θ 1 correction P1. Setting X correctionP2. Setting Y correction P4. Setting θ 2 correction Using the memory switch OFFOn Low speed List of error codes Using the Emergency Stop switch Automatic modeManual mode or in automatic mode Sewing1164Q 1165Q Adjusting the thread tension Tension adjustmentStroke adjustment Upper thread tensionRelationship between knife position and eyelet shape Needle and knife positionExplanation of the cutting space function Knife position compensation function Using the production counter Resetting the production counterDisplaying the production counter Counting down to zero methodUsing a cycle program Programming procedureSetting the feed bracket to the front position Using feed mode Using manual mode Setting the number of home position cycles Changing the cycle program counterReturning to the home position Cleaning and Maintenance Draining the oilStandard Adjustments Adjusting the height of the spreader and looperSpreader height Looper heightAdjusting the needle and looper timing Adjusting the loop stroke Adjusting the height of the needle bar Adjusting the clearance between the looper and needleAdjusting the needle guard Adjusting the spreader mounting positionsAdjusting the spreader timing Adjusting the needle racking width stitch widthChanging in the cutting block operation time Filing the cutting surface of the cutting block Adjusting the cutting pressure Replacing the knifeAdjusting the cloth opening amount Measuring the opening amountAdjusting the trimming of the upper thread Adjusting the trimming of the lower thread and gimpAdjusting the gimp length after trimming Lower thread presser Sub presserSummary of DIP Switches Front panel DIP switchesCircuit board DIP switches Troubleshooting Problem Cause Remedy Thread breaksSkipped stitches occur Needle breaksProblem CleanlyRemedy Upper thread is not cut Lower 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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