Table of Contents
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Chapters
Table of Contents
Related Manuals for Brother PS-55
Summarization of Contents
GENERAL INFORMATION
CAUTION
Important safety precautions and warnings for operating the sewing machine.
PRINCIPAL MECHANISMS
MECHANICAL CHART
Diagram identifying key mechanical components of the sewing machine.
POWER TRANSMISSION CHART
Diagrams illustrating how power is transmitted through the machine's mechanisms.
ELECTRONIC PARTS ARRANGEMENT CHART (STAR240E, STAR230E only)
Layout of electronic components within the sewing machine for specific models.
CONTROL SYSTEM BLOCK DIAGRAM (STAR240E, STAR230E only)
Visual representation of the machine's control system logic and flow.
MOTOR UNIT CONTROL (STAR240E, STAR230E only)
Explanation of how the motor unit is controlled for smooth operation.
OTHER ELECTRONIC COMPONENT FUNCTIONS (STAR240E, STAR230E only)
Details on the functions of various electronic components in specific models.
DISASSEMBLING AND REASSEMBLING THE SEWING MACHINE
DISASSEMBLING AND REASSEMBLING THE OUTER PARTS AND MAIN PARTS
Step-by-step guide for dismantling and reassembling external and major internal components.
LEAD WIRES ARRANGEMENT
Diagrams showing the correct routing and placement of internal wiring harnesses.
MAIN PC BOARD ASSEMBLY REMOVAL (STAR240E, STAR230E Only)
Procedures for removing and reinstalling the main printed circuit board.
MECHANICAL ADJUSTMENT STANDARDS AND ADJUSTMENT PROCEDURES
SELECTING UNIT SECTION ADJUSTMENTS
Adjusting the mechanisms that control stitch selection and patterns.
UPPER SHAFT AND LOWER SHAFT TIMING
Aligning the timing of the upper and lower shafts for correct operation.
DRIVING BELT AND TIMING BELT TENSION
Adjusting the tension of the driving and timing belts for optimal performance.
NEEDLE DOWN POSITION ADJUSTMENT
Setting the needle to stop in the correct down position for various stitches.
NEEDLE FLOW
Adjusting the needle's path and movement for smooth sewing.
LEFT STRAIGHT LINE SEWING NEEDLE DESCENT AND THE ZIGZAG MAXIMUM LEFT NEEDLE DESCENT ALIGNMENT
Aligning needle descent for straight and maximum left zigzag stitches.
TIMING OF NEEDLE AND ROTARY HOOK ASSEMBLY (CLEARANCE BETWEEN THE NEEDLE AND THE ROTARY HOOK POINT)
Ensuring correct timing and clearance between the needle and the rotary hook.
NEEDLE BAR HEIGHT
Adjusting the vertical position of the needle bar for proper stitch formation.
INNER ROTARY HOOK RETAINER PLATE L POSITION
Setting the correct position of the inner rotary hook retainer plate.
INNER ROTARY HOOK ROTATION PREVENTION BRACKET POSITION
Adjusting the bracket that prevents the inner rotary hook from rotating incorrectly.
FEED DOG FRONT-REAR AND LEFT-RIGHT POSITION
Positioning the feed dogs correctly for accurate fabric feeding.
FEED DOG HEIGHT
Setting the correct height of the feed dogs for proper fabric feeding.
PRESSER BAR HEIGHT
Adjusting the presser bar height for optimal presser foot contact.
THREAD TENSION DIAL TENSION
Calibrating the thread tension dial for correct thread tension.
SELECTION DIAL OUTER EDGE PLAY
Adjusting the play in the outer edge of the selection dial.
PATTERN DISPLAY SELECTION POSITIONING
Ensuring the correct pattern displays in the window when the dial is selected.
Z FINGER POSITIONING
Positioning the Z finger correctly relative to the pattern cams.
FEED BRACKET INSTALLATION POSITION
Setting the correct installation position for the feed bracket assembly.
SUPER PATTERN (TRIPLE SEWING)
Adjusting stitch lengths for super patterns to prevent breakdown.
FEED ADJUSTMENT
Calibrating the feed distance for straight line sewing.
BH LEFT NEEDLE DESCENT AND ZIGZAG MAXIMUM LEFT NEEDLE DESCENT ALIGNMENT (STAR240E, STAR230E, PS57, PS55)
Aligning needle descent for buttonhole left stitches and zigzag.
BUTTON HOLE STITCH LEFT REVERSE STITCH AND RIGHT FORWARD STITCH LENGTH
Adjusting stitch lengths for buttonhole reverse and forward stitches.
BUTTON HOLE STITCH BAR TACK FEED ADJUSTMENT
Adjusting the feed distance for buttonhole bar tack stitches.
BUTTON HOLE STITCH BUTTON HOLE LENGTH (STAR240E, STAR230E, PS57, PS55)
Setting the correct length for buttonhole stitches.
THREAD WINDING ADJUSTMENT
Adjusting the bobbin thread winding to the correct amount and parallelism.
FORWARD AND REVERSE STITCH LENGTH (STRAIGHT LINE STITCH LENGTH)
Ensuring equal stitch lengths for forward and reverse sewing.
INNER ROTARY HOOK TENSION
Adjusting the thread tension for the inner rotary hook.
NEEDLE STOP POSITIONING (NP) (STAR240E, STAR230E Only)
Setting the needle to stop at the correct position (up or down).
BACKSTITCH (BK) SWITCH ADJUSTMENT (STAR240E, STAR230E Only)
Adjusting the backstitch switch for proper operation.
BOBBIN WINDER SWITCH ADJUSTMENT (BOBBIN WINDING) (STAR240E, STAR230E Only)
Adjusting the bobbin winder switch for correct operation.
NEEDLE THREADER (STAR240E, STAR230E, PS57, PS55)
Instructions and compatibility chart for using the needle threader accessory.
NEEDLE THREADER (STAR240E, STAR230E, PS57, PS55) (CHECKING THE HOOK POSITION IN THE HORIZONTAL DIRECTION)
Checking and adjusting the hook position for successful needle threading.
NEEDLE THREADER (EXCHANGE) (STAR240E, STAR230E, PS57, PS55)
Procedure for replacing the needle threader hook.
TROUBLESHOOTING PROCEDURES
Machine skips stitches
Diagnosing and resolving issues where the machine skips stitches.
Fabric does not feed
Troubleshooting problems related to the fabric feeding mechanism.
Fabric does not feed straight
Identifying causes and solutions for fabric feeding off-course.
Upper thread breaks at start
Addressing common causes for upper thread breakage when starting sewing.
Upper thread breaks during sewing
Troubleshooting ongoing upper thread breakage during the sewing process.
Upper thread breaks during reverse sewing
Diagnosing and fixing upper thread breaks occurring during reverse stitching.
Lower thread breaks
Troubleshooting issues causing the lower thread to break.
Needle breaks
Identifying reasons for needle breakage and how to prevent it.
Noise
Diagnosing and resolving unusual noises originating from the sewing machine.
Forward and reverse feedings differ
Troubleshooting discrepancies in fabric feeding between forward and reverse modes.
Improper length of buttonhole legs
Adjusting buttonhole leg lengths when they are not correct.
Improper buttonhole size against button size
Correcting buttonhole size to match the actual button.
Unbalanced patterns
Troubleshooting and correcting unbalanced or distorted sewing patterns.
Needle hits needle plate when pattern selector dial is turned
Resolving the issue of the needle striking the needle plate during pattern selection.
Fabric gathers
Identifying and fixing causes of fabric gathering or puckering.
The stitch shown in the pattern indication window is different from the one being sewn
Diagnosing why the displayed pattern doesn't match the sewn stitch.
Light is off
Troubleshooting the sewing machine's light not turning on.
Motor does not run
Diagnosing and resolving issues where the motor fails to operate.
HOW TO ADJUST ELECTRONIC ELEMENTS (STAR240E, STAR230E Only)
When power is turned on, the lamp does not light up
Troubleshooting steps for when the machine's lamp fails to illuminate.
Main motor does not operate
Diagnosing why the main motor does not start or run.
Operation of main motor is not stable or maximum speed operation is not possible
Resolving issues with unstable motor speed or inability to reach maximum speed.
The motor starts, then stops immediately
Troubleshooting when the motor starts briefly then shuts off.
Speed cannot be adjusted
Diagnosing and fixing problems with adjusting the sewing speed.
Needle does not stop in the up position
Adjusting the needle stop position to ensure it stops in the upright position.
The sewing machine does not turn when the reverse sewing switch is pressed or if the switch is pressed during operation, it does not go into low speed.
Troubleshooting reverse sewing switch functionality and low speed operation.
During thread winding, the motor starts, but stops immediately
Resolving issues where the motor stops during thread winding.
Sewing machine does not operate normally when foot controller pressed
Diagnosing and fixing operational problems related to the foot controller.
When the sewing machine starts, the warning buzzer buzzes and it stops immediately
Troubleshooting the cause of a warning buzzer and immediate stoppage upon starting.
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