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Brother BAS-311H Service Manual

Brother BAS-311H
162 pages
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BAS-311H
Please read this manual before making any adjustments.
DIRECT DRIVE
PROGRAMMABLE ELECTRONIC PATTERN SEWER
SERVICE MANUAL

Table of Contents

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Brother BAS-311H Specifications

General IconGeneral
BrandBrother
ModelBAS-311H
CategorySewing Machine
LanguageEnglish

Summary

Safety Instructions

Safety Indications and Their Meanings

Explains the meaning of safety indications like DANGER, WARNING, CAUTION.

Warning Labels

Label Interpretation

Describes the warning labels found on the sewing machine and their meanings.

Function Settings

Setting Memory Switches (Advanced)

Step-by-step guide for changing settings within the advanced memory switch mode.

Setting the Work Clamp Mode

How to configure work clamp operating modes using combinations of memory switch settings.

Protection Settings (Method A)

How to set protection levels using Method A, which does not require an SD card.

X and Y Parallel Movement of Sewing Patterns

Using SD Card

Reading Sewing Machine Data

Procedure to read all machine data (programs, settings, logs) from SD card.

Mechanical Descriptions

Work Clamp Lifter Mechanism (Motor-driven)

Description of the work clamp lifter mechanism for motor-driven specifications with diagrams.

Work Clamp Lifter Mechanism (Pneumatic)

Description of the work clamp lifter mechanism for pneumatic specifications with diagrams.

Feed Mechanism

Description of the feed mechanism, explaining X and Y movements for pattern creation.

Thread Trimmer Mechanism

Detailed explanation of the thread trimmer mechanism with diagrams and part identification.

Assembly

Work Clamp Lifter Mechanism Assembly (Motor-driven)

Assembly instructions for the motor-driven work clamp lifter mechanism.

Shuttle Hook Mechanism Assembly

Instructions for installing and adjusting the shuttle hook mechanism.

Thread Trimmer Mechanism Assembly

Assembly steps for the thread trimmer mechanism, including detailed part connections.

Adjustment

Electric Mechanism

Precautions During Adjustment

Essential safety precautions to take when working with the electric mechanism and control box.

Connector Description and Positions

Description of connectors on the main and motor PCBs, including their functions and locations.

Troubleshooting Poor Connections

Identifies symptoms of poor connections and their corresponding connector locations for diagnosis.

Troubleshooting Flowchart

A step-by-step flowchart to diagnose and troubleshoot machine problems based on symptoms.

Problem Solution and Measures

Detailed solutions and measures for various error statuses, referencing the troubleshooting flowchart.

Error Status #1: Power Indicator Not Lit

Specific troubleshooting steps and probable causes for the power indicator not lighting up.

Error Status #2: Error Code on Display

Troubleshooting for error codes appearing on the display when power is turned on.

Error Status #5: Error on Foot Switch Depress

Troubleshooting for errors occurring when the foot switch is depressed.

Error Status #6: X Feed Does Not Move

Troubleshooting for issues where the X feed does not move, with associated error codes.

Error Status #7: Y Feed Does Not Move

Troubleshooting for issues where the Y feed does not move, with associated error codes.

Error Status #8: Work Clamp Pulse Motor Issues

Troubleshooting for problems with the work clamp pulse motor, including non-operation or slight movement.

Error Status #9-14: Various Operation Errors

Troubleshooting for errors like work clamp not rising/lowering, TEST indicator issues, and feed mechanism problems.

Error Status #15-16: Test Feed Operation Errors

Troubleshooting for errors during test feeding, including tension release and sewing operation issues.

Error Status #17: Post-Operation Errors

Troubleshooting for errors occurring after the machine operates, such as synchronizer or motor issues.

Error Status #18: Incorrect Stitches

Troubleshooting for issues causing incorrect stitches, including synchronizer and mechanism adjustments.

Error Status #19: Thread Trimmer Not Operating

Troubleshooting steps for when the thread trimmer mechanism fails to operate.

Error Status #20-21: Position and SD Card Errors

Troubleshooting for needle up stop position errors and SD card read/write mode activation issues.

List of Error Codes

Troubleshooting

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