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Brother BAS-311G Service Manual

Brother BAS-311G
152 pages
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BAS-311G
BAS-326G
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-311G Specifications

General IconGeneral
BrandBrother
ModelBAS-311G
CategorySewing Machine
LanguageEnglish

Summary

Safety Instructions

Safety Indications and Their Meanings

Explains safety indications and symbols used in the manual.

Notes on Safety

Provides safety precautions for environmental requirements and installation.

Safety Precautions for Operations

Safety guidelines for sewing, cleaning, maintenance, and inspection.

Warning Labels

Sewing Machine Warning Labels

Details warning labels and their meanings on the sewing machine.

Specifications

Function Settings

List of Special Functions When Power is Turned On

Lists special functions accessible upon power-on.

List of Advanced Functions

Lists advanced functions accessible via key combinations.

Memory Switch Setting Method (Advanced)

Describes how to set memory switches using the advanced method.

List of Memory Switch Settings

Details various memory switch settings and their initial values.

Setting the Work Clamp Mode

Explains how to set work clamp operating modes using memory switches.

Stitch Counter Checking Method

Describes how to check the stitch counter.

Error History Checking Method

Explains how to check the past error history.

Input Checking Method

Describes how to check for malfunctions using input checks.

Output Checking Method

Explains how to check output signals to verify mechanism operation.

Software Version Checking Method

Describes how to check the software version of the machine.

Reading / Writing Data

Handling Data

Explains how data is handled from CF cards and floppy disks.

Notes on Handling CF Cards

Provides important precautions for handling CF cards.

Structure of a CF Card Folder

Details the folder structure on a CF card.

Data Read/Write Mode

Explains how to enter and use the data read/write mode.

Reading Sewing Data from CF Cards

Describes the procedure to read sewing data from a CF card.

Writing Sewing Data to CF Cards

Details the procedure to write sewing data to a CF card.

Reading Memory Switch Data from CF Cards

Explains how to read memory switch data from a CF card.

Writing Memory Switch Data to CF Cards

Details how to write memory switch data to a CF card.

Reading User Program Data from CF Cards

Describes how to read user program data from a CF card.

Writing User Program Data to CF Cards

Details how to write user program data to a CF card.

Updating the Control Program

Explains the procedure for updating the control program.

Writing Error Log Data to CF Card

Describes how to write error log data to a CF card.

Reading Sewing Data from Floppy Disks

Explains how to read sewing data from floppy disks.

Writing Sewing Data to Floppy Disks

Details how to write sewing data to floppy disks.

Reading Extended Option Output Data from a CF Card

Describes how to read extended option output data from a CF card.

Writing Extended Option Output Data to CF Cards

Details how to write extended option output data to CF cards.

Reading Extended Option Output Data from Floppy Disks

Explains how to read extended option output data from floppy disks.

Mechanical Descriptions

Needle Bar and Thread Take-up Mechanisms

Details the needle bar and thread take-up mechanisms.

Lower Shaft and Shuttle Race Mechanisms

Describes the lower shaft and shuttle race mechanisms.

Work Clamp Lifter Mechanism (Solenoid Specifications)

Explains the work clamp lifter mechanism for solenoid specifications.

Work Clamp Lifter Mechanism (Pneumatic Specifications)

Details the work clamp lifter mechanism for pneumatic specifications.

Intermittent Presser Foot Lifter Mechanism

Describes the intermittent presser foot lifter mechanism.

Intermittent Presser Foot Stroke Mechanism

Explains the intermittent presser foot stroke mechanism.

Feed Mechanism

Details the feed mechanism for X and Y movements.

Thread Trimmer Mechanism

Explains the thread trimmer mechanism.

Tension Release Mechanism

Describes the tension release mechanism.

Thread Wiper Mechanism

Details the thread wiper mechanism.

Disassembly

Covers Disassembly

Illustrates the disassembly of various covers.

Thread Wiper Mechanism Disassembly

Details the disassembly of the thread wiper mechanism.

Work Clamp Arm Mechanism Disassembly

Explains the disassembly of the work clamp arm mechanism.

Intermittent Presser Foot Lifter Mechanism (1) Disassembly

Details the first part of the intermittent presser foot lifter mechanism disassembly.

Needle Bar Mechanism Disassembly

Illustrates the disassembly of the needle bar mechanism.

Upper Shaft Mechanism Disassembly

Details the disassembly of the upper shaft mechanism.

Lower Shaft Mechanism Disassembly

Explains the disassembly of the lower shaft mechanism.

Feed Covers Disassembly

Details the disassembly of the feed covers.

Feed Mechanism Disassembly

Illustrates the disassembly of the feed mechanism.

Work Clamp Lifter Mechanism (Solenoid) Disassembly

Details the disassembly of the work clamp lifter mechanism (Solenoid).

Work Clamp Lifter Mechanism (Pneumatic) Disassembly

Explains the disassembly of the work clamp lifter mechanism (Pneumatic).

Tension Release Mechanism Disassembly

Details the disassembly of the tension release mechanism.

Intermittent Presser Foot Lifter Mechanism (2) Disassembly

Describes the second part of the intermittent presser foot lifter mechanism disassembly.

Thread Trimmer Mechanism Disassembly

Illustrates the disassembly of the thread trimmer mechanism.

Shuttle Hook Mechanism Disassembly

Explains the disassembly of the shuttle hook mechanism.

Assembly

Thread Trimmer Mechanism (1) Assembly

Details the first part of the thread trimmer mechanism assembly.

Intermittent Presser Foot Lifter Mechanism (1) Assembly

Describes the first part of the intermittent presser foot lifter mechanism assembly.

Tension Release Mechanism Assembly

Illustrates the assembly of the tension release mechanism.

Work Clamp Lifter Mechanism (Solenoid) Assembly

Explains the assembly of the work clamp lifter mechanism (Solenoid).

Work Clamp Lifter Mechanism (Pneumatic) Assembly

Details the assembly of the work clamp lifter mechanism (Pneumatic).

Feed Mechanism Assembly

Illustrates the assembly of the feed mechanism.

Feed Covers Assembly

Explains the assembly of the feed covers.

Upper Shaft Mechanism Assembly

Details the assembly of the upper shaft mechanism.

Needle Bar Mechanism Assembly

Illustrates the assembly of the needle bar mechanism.

Intermittent Presser Foot Lifter Mechanism (2) Assembly

Explains the second part of the intermittent presser foot lifter mechanism assembly.

Lower Shaft Mechanism Assembly

Details the assembly of the lower shaft mechanism.

Shuttle Hook Mechanism Assembly

Illustrates the assembly of the shuttle hook mechanism.

Thread Trimmer Mechanism (2) Assembly

Explains the second part of the thread trimmer mechanism assembly.

Work Clamp Arm Mechanism Assembly

Details the assembly of the work clamp arm mechanism.

Adjustments After Work Clamp Arm Installation

Explains adjustments after installing the work clamp arm.

Thread Wiper Mechanism Assembly

Details the assembly of the thread wiper mechanism.

Covers Assembly

Illustrates the assembly of various covers.

Adjustment

Checking the Machine Head Switch

Explains how to check the machine head switch.

Standard Thread Tension

Provides standard thread tension specifications.

Upper and Lower Thread Tension

Details upper and lower thread tension adjustments.

Thread Take-up Spring Adjustment

Explains adjustments for thread take-up spring height and tension.

Arm Thread Guide R Adjustment

Details adjustment of the arm thread guide R.

Adjusting the Needle Bar Height

Explains how to adjust the needle bar height.

Adjusting the Needle Bar Lift Amount

Details adjustment of the needle bar lift amount.

Adjusting the Driver Needle Guard

Explains how to adjust the driver needle guard.

Adjusting the Needle Clearance

Details how to adjust the needle clearance.

Adjusting the Shuttle Race Thread Guide

Explains adjustment of the shuttle race thread guide.

Rotary Hook Lubrication Amount Adjustment

Describes how to adjust the rotary hook lubrication amount.

Adjusting the Position of the Movable Knife

Explains how to adjust the position of the movable knife.

Replacing the Movable and Fixed Knives

Details the procedure for replacing movable and fixed knives.

Installing the Feed Plate

Explains how to install the feed plate.

Adjusting the Thread Wiper

Details how to adjust the thread wiper.

Presser Foot Installation Position

Explains the presser foot installation position.

Changing the Intermittent Stroke

Describes how to change the intermittent stroke.

Adjusting the Work Clamp Lift Amount

Explains how to adjust the work clamp lift amount.

Adjusting the Air Pressure (Pneumatic Specifications)

Details how to adjust air pressure for pneumatic specifications.

Adjusting the Thread Trimmer Cam Position

Explains how to adjust the thread trimmer cam position.

Belt Tension Adjustment

Details belt tension adjustment for X-GT belt.

Belt Tension Adjustment (Continued)

Details belt tension adjustment for Y-GT belt.

Adjusting the Tension Release Amount

Explains how to adjust the tension release amount.

Adjusting the Backlash of the Lower Shaft Gear

Details how to adjust the backlash of the lower shaft gear.

Adjusting the Home Position

Explains how to adjust the home position.

Work Clamp Lift Home Position Adjustment

Details how to adjust the work clamp lift home position.

X-Y Feed Home Position Adjustment

Explains how to adjust the X-Y feed home position.

Adjusting the Needle Up Stop Home Position

Details how to adjust the needle up stop home position.

Adjusting the Needle Up Stop Position

Explains how to adjust the needle up stop position.

Electrical Mechanism

Precautions While Carrying Out Adjustments

Provides safety precautions for electrical adjustments.

Inside the Control Box and Operation Panel Structure

Shows the internal structure of the control box and operation panel.

Description of Fuses

Details the fuses used in the machine and their functions.

Description of Connectors

Describes the connectors used in the electrical system.

Connector Positions

Shows the positions of connectors on the main P.C. board.

Symptoms When There Are Poor Connections

Lists symptoms caused by poor connector connections.

Feed Mechanism Symptoms

Trouble symptoms related to the feed mechanism and connectors.

Work Clamp Mechanism Symptoms

Trouble symptoms related to the work clamp mechanism and connectors.

Thread Trimming Mechanism Symptoms

Trouble symptoms related to thread trimming and connectors.

Sewing Operations Symptoms

Trouble symptoms related to sewing operations and connectors.

Other Symptoms

Other trouble symptoms and related connectors.

Troubleshooting Overview

Provides guidance for troubleshooting.

Diagnosis Flowchart

Presents a diagnosis flowchart for troubleshooting.

Troubleshooting Remedies

Offers remedies for identified problems.

Problem 1: Power Indicator Not Illuminating

Troubleshooting steps for power indicator issues.

Problem 2: No Display on PROGRAM No. or Menu

Troubleshooting for display issues when power is on.

Problem 3: Error Code Displayed on Power-On

Troubleshooting steps for error codes displayed on power-on.

Problem 4: Panel Keys Do Not Work

Troubleshooting for non-functional operation panel keys.

Problem 5: Work Clamp Fails to Return to Home Position

Troubleshooting for work clamp home position issues.

Problem 6: Incorrect Home Position

Troubleshooting for incorrect home position detection.

Problem 7: Error Code on Foot Switch Depression (X-Feed)

Troubleshooting for error codes when foot switch is depressed (X-feed).

Problem 8: Error Code on Foot Switch Depression (Y-Feed)

Troubleshooting for error codes when foot switch is depressed (Y-feed).

Problem 9: Error Code on Foot Switch Depression (Work Clamp)

Troubleshooting for error codes when foot switch is depressed (Work clamp).

Problem 10: CF Media Indicator Not Illuminating

Troubleshooting for CF media indicator not illuminating.

Problem 11: Work Clamp Does Not Rise

Troubleshooting for work clamp not rising.

Problem 12: Work Clamp Does Not Drop

Troubleshooting for work clamp not dropping.

Problem 13: TEST Indicator Not Illuminating

Troubleshooting for TEST indicator not illuminating.

Problem 14: Feed Mechanism Not Moving One Stitch

Troubleshooting for feed mechanism not moving one stitch.

Problem 15: Feed Mechanism Not Moving Fast

Troubleshooting for feed mechanism not moving fast.

Problem 16: Feed Mechanism Not Following Program

Troubleshooting for feed mechanism not following program.

Problem 17: Intermittent Presser Foot Not Dropping

Troubleshooting for intermittent presser foot not dropping.

Problem 18: Sewing Machine Not Operating (E120)

Troubleshooting for sewing machine not operating with E120 error.

Problem 19: Error Code After Operation

Troubleshooting for error codes displayed after operation.

Problem 20: Sewing is Incorrect

Troubleshooting for incorrect sewing results.

Problem 21: Thread Not Trimmed

Troubleshooting for thread trimming failures.

Problem 22: Thread Wiper Not Operating

Troubleshooting for thread wiper not operating.

Problem 23: Needle Not Stopping in Up Position (E110)

Troubleshooting for needle not stopping in the up position.

Table of Error Codes

Switch-Related Errors

Lists error codes related to switch operations and their remedies.

Upper Shaft Motor-Related Errors

Lists error codes related to upper shaft motor and their remedies.

Feed Mechanism-Related Errors

Lists error codes related to feed mechanism and their remedies.

Work Clamp-Related Errors

Lists error codes related to work clamp and their remedies.

Communication and Memory-Related Errors

Lists error codes related to communication and memory.

Data Editing-Related Errors

Lists error codes related to data editing.

Device-Related Errors

Lists error codes related to device errors.

P.C. Board-Related Errors

Lists error codes related to PC board issues.

Troubleshooting

Work Clamp Does Not Lift

Troubleshooting for work clamp not lifting.

Work Clamp Does Not Drop

Troubleshooting for work clamp not dropping.

Work Clamp Lift Amount is Incorrect

Troubleshooting for incorrect work clamp lift amount.

Work Clamp Does Not Lift to Maximum Height

Troubleshooting for work clamp not lifting to maximum height.

Thread Wiper Does Not Operate Correctly

Troubleshooting for thread wiper malfunction.

Lower Thread Winds to One Side

Troubleshooting for lower thread winding issues.

Lower Thread Winding Amount is Incorrect

Troubleshooting for incorrect lower thread winding amount.

Skipped Stitches at Sewing Start

Troubleshooting for skipped stitches at sewing start.

Upper Thread Length is Irregular

Troubleshooting for irregular upper thread length.

Upper Thread Breaks

Troubleshooting for upper thread breaks.

Lower Thread Breaks

Troubleshooting for lower thread breaks.

Skipped Stitches Occur

Troubleshooting for skipped stitches.

Needle is Broken

Troubleshooting for broken needles.

Thread Jamming

Troubleshooting for thread jamming issues.

Upper Thread is Not Trimmed

Troubleshooting for upper thread not being trimmed.

Poor Stitch Finish on Underside of Material

Troubleshooting for poor stitch finish on material underside.

Incorrect Tightening of the Thread

Troubleshooting for incorrect thread tightening.

Upper Thread Length is Irregular

Troubleshooting for irregular upper thread length.

Machine Does Not Operate When Powered On

Troubleshooting for machine not operating when powered on and foot switch pressed.

Needle is Not Trimmed

Troubleshooting for needle not trimming.

Thread Wiper Does Not Operate

Troubleshooting for thread wiper not operating.

Needle Not Stopping in Up Position (E110)

Troubleshooting for needle not stopping in the up position.

7-Segment Display

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