Brother HE-800A Service Manual

3. ASSEMBLY
HE-800A
71
3-21. Thread breakage detection mechanism
1. Provisionally install the thread guide (2) to the thread breakage perceiving shaft (1) with the plain washers (3)
and (4) and the screw (5), and then insert the thread breakage perceiving shaft (1) into the arm.
2. Provisionally install the thread breakage sensor assembly (6) with the two screws (7).
3. Install the cutter bar fixing plate (8) to the thread breakage perceiving shaft (1) with the set screw (9).
4. Install the balancer (10) to the cutter bar fixing plate (8) with the screw (11).
5. Install the lever stopper (12) at the correct angle with the screw (13).
6. Provisionally install the lever stopper (14) with the screw (15).
* After installing, carry out the steps in “4-17. Adjusting the thread breakage detector”.
4261Q 4262Q
4260Q

Brother HE-800A Specifications

General

Brand	Brother
Model	HE-800A
Category	Sewing Machine
Language	English

Summary

SAFETY INSTRUCTIONS

1. Safety indications and their meanings

Explains safety indications and symbols used in the manual and on the machine.

Installation

Provides guidelines for safe and proper installation of the sewing machine.

4. ADJUSTMENT

4-1. Notes on making adjustments

Important notes and precautions before performing machine adjustments.

4-6. Adjusting the needle and hook timing

4-14. Adjusting the upper thread trimming

Guides for adjusting the upper thread trimming mechanism.

4-15. Adjusting the lower thread trimming

Guides for adjusting the lower thread trimming mechanism.

5. TROUBLESHOOTING

5-1. Upper thread breakage

Troubleshooting steps for upper thread breakage issues.

5-2. Skipped stitches

5-17. Needle breakage

5-18. Imperfect cutter function (imperfect material cutting)

6. ELECTRIC COMPONENTS AND SOFTWARE

6-1. Precautions at the time of adjustment

Safety precautions when working with the control box and electrical components.

6-3. Fuse explanation

6-4-2. Signal names for connectors and probable symptoms due to poor contact

6-9. Error code table

List of error codes, their causes, and remedies.