What to do if the button clamp is not lowered on my Brother Sewing Machine?
If the button clamp is not lowered on your Brother Sewing Machine, the presser lifter link may not be moving back. Hook the link return spring properly to resolve this issue.
How to fix skipped stitches on my Brother BE-438C Sewing Machine?
Skipped stitches on your Brother Sewing Machine can occur for several reasons. The clearance between the needle and rotary hook tip may be too great, requiring adjustment. The needle and rotary hook timing might be incorrect, so adjust the needle bar lift amount. The driver might be contacting the needle excessively; adjust the driver needle guard. Check if the needle is bent and replace it if necessary. Also, ensure the needle is installed correctly.
Why does the thread keep coming un-threaded on my Brother Sewing Machine?
If the thread comes un-threaded on your Brother Sewing Machine, it could be due to stitches being skipped at the sewing start. Uneven upper thread length may also cause this; adjust the sub-tension. Alternatively, the upper thread might be too short, so adjust the thread take-up lever stroke.
What to do if my Brother Sewing Machine does not operate when turned on?
If your Brother Sewing Machine does not operate when the power is on and the foot switch is depressed, the head position switch may not be working. Check if the cord is disconnected. If the head position switch is broken, replace it.
Why is my Brother BE-438C Sewing Machine upper thread breaking?
There are several reasons why the upper thread might be breaking: * The upper thread tension may be too strong, so you should adjust it. * The needle might be installed incorrectly; make sure it is installed correctly. * The thread might be too thick for the needle; use the correct thread for the needle. * The thread take-up spring tension and height could be incorrect; adjust them. * The rotary hook, needle hole plate, or needle might be damaged; file smooth or replace the part. * If using synthetic thread, it might be melting; use a thread cooling device.
How to troubleshoot upper thread not trimming on my Brother BE-438C?
If the upper thread is not being trimmed on your Brother Sewing Machine, the movable knife may be blunt and need replacement. The fixed knife might also be blunt, requiring sharpening or replacement. The movable knife might not be picking up the thread, so adjust the position of the shuttle race thread guide. The movable knife position could be incorrect, so adjust its position. Weak sub-tension can also cause this, so turn the sub-tension nut to adjust the tension.
What to do if Brother BE-438C Sewing Machine does not operate when turned on?
If the machine does not operate when the power is turned on and the foot switch is depressed: * Check if the head position switch cord is disconnected. * Adjust the position of the switching plate. * Replace the head position switch if it is broken.
What to do if the needle breaks on my Brother Sewing Machine?
Needle breakage in your Brother Sewing Machine can happen if the needle strikes the button. The needle might be touching the rotary hook, so adjust the needle clearance. Check if the needle is bent and replace it if needed. Ensure you are using the correct needle for the material, as a needle that is too thin can also break.
Why does the lower thread wind to one side on my Brother Sewing Machine?
If the lower thread winds to one side on your Brother Sewing Machine, the bobbin winder thread tension stud height may be incorrect. Adjust the height of the thread tension stud to correct this.
What causes the lower thread to break on my Brother BE-438C Sewing Machine?
If the lower thread breaks on your Brother Sewing Machine, it may be because the lower thread tension is too strong, so adjust it. Also, check the needle hole plate or bobbin case for damaged corners and file smooth or replace the affected part.
General| Brand | Brother |
|---|---|
| Model | BE-438C |
| Category | Sewing Machine |
| Language | English |
Explains safety indications and symbols used in the manual and on the machine.
Specifies environmental conditions for machine operation.
General guidance for installing the sewing machine and its components.
Step-by-step instructions for cleaning sewing machine parts.
Procedures for carrying out regular maintenance and inspections.
Explains the high temperature warning symbol on the machine.
Illustrates the direction of operation and identifies key machine parts.
Lists and labels the safety devices attached to the machine.
Detailed technical specifications of the BE-438C sewing machine.
List of pre-set sewing programs with parameters like stitches and dimensions.
Instructions for setting up the power table, including dimensions and requirements.
Step-by-step guide to mounting the control box onto the machine.
Procedures for installing rubber cushions and the oil pan.
Steps for mounting the switching plate and machine head.
Instructions for installing the head rest and optional cooling tank.
How to install the operation panel and connect the ground wire.
Detailed instructions for connecting various machine cords to the control box.
Steps for installing the belt cover and the foot switch.
Procedures for installing the spool stand and button tray.
How to attach the eye guard assembly to the face plate.
Identifies key points requiring lubrication on the sewing machine.
Explains the purpose of each button and indicator on the operation panel.
Step-by-step guide to operating the sewing machine.
How to select and set a specific sewing program number.
Adjusting the X and Y scale settings for pattern dimensions.
How to adjust and set the sewing speed in RPM.
Safety precautions to prevent accidental changes during pattern checking.
Guidelines for selecting appropriate needles and threads based on material.
Procedures for correctly installing the needle and threading the upper thread.
Detailed steps for winding the bobbin thread onto the bobbin.
How to replace the bobbin case and thread it correctly.
Reference guide for setting and adjusting thread tension.
Detailed instructions for adjusting lower, upper, and take-up spring tensions.
How to adjust thread take-up amount and guide R.
Procedures for inserting buttons and adjusting the button holder.
Steps for replacing the Programmable Read-Only Memory (PROM).
Steps to take before starting the sewing process, including checks.
How to check the needle and clean the rotary hook.
Detailed instructions for lubricating various parts of the machine.
Procedures for draining oil and cleaning air inlets/holes.
How to adjust the needle bar height and lift amount.
Adjusting the driver needle guard and needle-to-hook clearance.
How to adjust the shuttle race thread guide position.
How to adjust the amount of thread taken up by the lever.
Steps for adjusting the movable knife for thread trimming.
How to replace the movable and fixed knives.
Adjusting knife engagement and button clamp lift.
Adjusting holding pressure and button holder position.
Adjusting needle stop position and thread wiper.
How to check input sensors and DIP switch configurations.
Checking input voltage and clearing memory settings.
How to move recorded stitch patterns to different positions.
How to set and use the bobbin thread counter.
How to display and use the production counter.
Explains the functions of DIP switches on the operation panel.
How to set the presser mode using DIP switch combinations.
Explains the functions of DIP switches located inside the control box.
How to record, use, and clear user programs.
Describes functions controlled by memory switches 00 through 0F.
Describes functions controlled by memory switches 10 through 1F.
Describes functions controlled by memory switches 30 through 4F.
How to record and use the cycle sewing function for patterns.
Explains common error codes related to machine setup and operation.
Explains specific error codes for circuit and data issues.
Lists error codes related to optional equipment malfunctions.
Lists and illustrates various feed plates for different sewing needs.
Lists different button clamp spacers.
Lists and illustrates various needle hole plates.
Troubleshooting steps for button clamp and thread wiper malfunctions.
Solutions for thread breakage and skipped stitches.
Troubleshooting for needle breakage and trimming problems.
Solutions for poor seam finish and threading issues.
Troubleshooting for machine operation and stitch tightness problems.
Describes the two-pedal and two-step foot switches.
Describes the liquid cooling tank and solenoid thread wiper.
Describes the function of the emergency stop switch.
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