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JUKI HZL-UX8 Series User Manual

JUKI HZL-UX8 Series
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SERVICE MANUAL
HZL-UX8 Series
COMPUTER SEWING MACHINE
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JUKI HZL-UX8 Series Specifications

General IconGeneral
Maximum Stitch Width9 mm
Maximum Stitch Length5 mm
Needle ThreadingAutomatic
LCD ScreenYes
Buttonhole Styles16
Bobbin WindingAutomatic
LightingLED
Foot Pressure AdjustmentYes
Knee LifterYes
Start/Stop ButtonYes
Needle Up/Down ButtonYes
DisplayLCD
Voltage120V

Summary

JUKI HZL-UX8 Series Specifications

Power switch details

Details about voltage and frequency for the power switch.

Power consumption

Specifies the power consumption of the machine.

Dimensions and weight

Lists the main unit's dimensions and weight.

Revolution control features

Explains slide style speed control, foot controller, and safety controls.

Stop position functionality

Describes how the machine stops upon finishing sewing or in case of fault.

Zigzag width capability

Specifies the maximum zigzag width.

Amount of feed adjustment

Details how the amount of feed is changed.

Pattern Selection and Features

Pattern selection method

Explains that pattern selection is made on the touch panel.

Pattern selection capacity

States the maximum number of selectable patterns.

Total number of patterns

Specifies the total number of patterns available.

Automatic threading operation

Describes the automatic threading mechanism.

Automatic lock stitch function

Explains the automatic lock stitch function for straight and other patterns.

Buttonholing capabilities

Details the auto-return type full automatic buttonholing.

Pattern saving and recall

Describes storing and recalling pattern settings and patterns.

Helpful message indicators

Lists various helpful messages displayed by the machine.

Troubleshooting Mechanical Components

Faulty thread tension troubleshooting

Lists checks for faulty thread tension.

Stitch skipping troubleshooting

Lists checks for stitch skipping issues.

Thread breakage troubleshooting

Lists checks for thread breakage.

Hitch stitch troubleshooting

Lists checks for hitch stitch problems.

Faulty material feed troubleshooting

Lists checks for faulty material feed.

Needle/throat plate contact troubleshooting

Lists checks for needle/throat plate contact.

Faulty pattern shape troubleshooting

Lists checks for faulty pattern shapes.

Faulty auto thread trimming troubleshooting

Lists checks for faulty auto thread trimming.

Faulty operating noise troubleshooting

Lists checks for faulty operating noise.

Needle threader troubleshooting

Lists checks for the needle threader.

Failure to start sewing troubleshooting

Lists checks for failure to start sewing.

Auto presser foot lift height troubleshooting

Lists checks for auto presser foot lift height.

Principal Parts Identification

Disassembling Machine Covers

Top cover removal

Instructions on how to remove the top cover.

Face cover removal

Instructions on how to remove the face cover.

Throat plate removal

Instructions on how to remove the throat plate.

Spool Cover Removal

Belt Cover Removal

Bottom Cover Removal

Free Arm Bottom Cover Removal

Free Arm Upper Cover Removal

Face Plate Cover Removal

Front Panel Removal

Rear Panel Removal

PCB Connection Diagram

Machine Adjustment Procedures

Adjusting the needle bar height

Procedures to adjust the needle bar height.

Adjusting Needle Entry Point

Adjusting Feed Dog Height

Timing Belt Adjustment

Feed Timing Adjustment

Adjusting the Shield

Hook Driving Shaft Coupling and Timing

Needle and Hook Timing Adjustment

Needle to Hook Blade Clearance

Hook Rotation Stopper Plate Position

Adjusting Bobbin Thread Tension

Adjusting Needle Thread Tension

Needle Threading Hook Vertical Position

Adjusting Auxiliary Hook Height

Adjusting Auxiliary Hook Opening Amount

Adjusting Presser Bar Height

Motor Belt Adjustment

Longitudinal Feed Adjustment

Presser Foot Lifting Adjustment

Position of the Presser Foot Lifting Motor

Adjusting the position of the presser foot lifting motor.

Auto-Lifter Height Adjustment

Thread Trimming Adjustment

Thread Trimmer Unit Attachment/Removal

Steps for removing and attaching the thread trimmer unit.

Thread Trimming Switch Adjustment

Top Feed Dog Attachment/Removal

Automatic DF Motor Position Adjustment

Bobbin Thread Detection Sensor Adjustment

Bobbin Thread Detection Sensor Attachment/Removal

Steps for removing and attaching the bobbin thread detection sensor.

Bobbin Thread Detection Sensor Adjustment (Fine Tuning)

Service Mode Operations

Service Mode Screen Selection

How to select and access the service mode screen.

Service Mode Item Descriptions

Details of items available in service mode and their descriptions.

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