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JUKI CP-760 - User Manual

JUKI CP-760
90 pages
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ENGINEER’S MANUAL
29345808
No.01
Direct-drive, Computer-controlled, High-speed, 1-needle,
Lockstitch, Zigzag Stitching Machine
LZ-2290 Series
CP-760 / SC-905

Table of Contents

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JUKI CP-760 Specifications

General IconGeneral
BrandJUKI
ModelCP-760
CategorySewing Machine
LanguageEnglish

Summary

SPECIFICATIONS

Machine Head Specifications

Details of the machine head specifications, including speed, width, feed, needle, etc.

Stitch Pattern Table

Table detailing various stitch patterns, their stitches, zigzag width, and selection keys.

Cautions in Operation

Safety and operational precautions for using the sewing machine, including oiling and maintenance.

NAME OF EACH COMPONENT

Component Identification and Description

Lists and describes the numbered components of the sewing machine for reference.

STANDARD ADJUSTMENT

Height and Inclination of the Feed Dog

Adjusting the height and inclination of the feed dog for optimal sewing.

Adjusting the Feed Timing

Procedure for adjusting the feed timing mechanism, including alignment of marks.

Adjusting the Feed Amount

How to adjust the feed amount for normal and reverse stitches using specific screws.

Position of the Feed Dog

Adjusting the feed dog's position, especially concerning clearance with the throat plate.

Adjusting Material Slippage (LZ-2290 SU;DU)

Procedure for adjusting material slippage by modifying feed dog height and inclination.

Adjusting the Origin of the Needle Rocking Motor

Steps for calibrating the origin position of the needle rocking motor.

Adjusting Needle Entry Position (Rocking)

How to adjust the needle's entry path into the fabric.

Adjusting Longitudinal Needle Bar Play

Procedure to adjust and eliminate play in the needle bar's longitudinal movement.

Adjusting Needle Entry Position (Longitudinal)

Adjusting the needle's entry path in the longitudinal direction.

Position of the Needle Bar Connection Guide

Adjusting the needle bar connection guide for proper needle movement.

Height of the Needle Bar

Steps to set the correct height of the needle bar.

Adjusting Needle-to-Hook Timing and Needle Guard

Adjusting the timing between needle and hook, and the needle guard for proper sewing.

Position of the Bobbin Case Stopper

Adjusting the bobbin case stopper's position to prevent slippage.

Orientation of the Needle Bar Thread Holder

Correctly orienting the needle bar thread holder for proper thread flow.

Auxiliary Thread Take-up Lever Adjustment

Adjusting vertical and longitudinal positions of the auxiliary thread take-up lever.

Position of the Thread Tension

Adjusting the thread tension controller's position.

Position of the Pre-Tension

Adjusting longitudinal position and orientation of the pre-tension unit.

Position of the Thread Take-up Spring Guard

Adjusting guard to avoid contact with the tension disk.

Installing the Thread Take-up Guide B

Proper installation of the thread take-up guide B.

Installing the Thread Take-up

Procedure for securely installing the thread take-up.

Installation of the Presser Foot

Correctly fitting the presser foot onto the throat plate.

Installing and Adjusting Bobbin Winder Unit

Installing and adjusting the bobbin winder unit for proper operation.

Adjusting Hook Oil Amount

Adjusting the oil level in the hook mechanism for lubrication.

Adjusting the Thread Trimming Unit

Procedures for adjusting the thread trimming unit components.

Initial Position of the Moving Knife

Setting the initial position of the moving knife in the thread trimming unit.

Timing of the Thread Trimming Cam

Adjusting the timing of the thread trimming cam for correct operation.

Installing;Removing the Knife Unit

Instructions for installing and removing the knife unit.

Stop Position of Needle After Thread Trimming

Setting the needle's final stop position after thread trimming.

Handwheel-Stator Clearance

Ensuring proper clearance between the handwheel and stator.

Automatic Reverse Stitching Magnet Position

Adjusting the position of the reverse stitching magnet for proper function.

Adjusting Thread Tension Releasing Solenoid

Adjusting the thread tension releasing solenoid for proper function.

Adjusting the Stitch Length Dial

Procedures for assembling and adjusting the stitch length and condensation dials.

Adjusting the Lubrication Mechanism

Adjusting the lubrication system, particularly for the hook.

Adjusting Thread Draw-out Wire Position

Setting the correct position of the thread draw-out wire.

Adjusting Thread Draw-out Wire Stroke

Adjusting the travel stroke of the thread draw-out wire.

Installing the Wiper Base

Correct installation of the wiper base.

Adjusting the Wiper Solenoid

Adjusting the wiper solenoid for proper operation.

Position of the Wiper

Ensuring correct positioning of the wiper during operation.

Applying the Exclusive Grease

Instructions for applying exclusive grease to specific machine parts.

PROCEDURES OF DISASSEMBLING;ASSEMBLING AND CAUTIONS

Gear Box Procedures

Steps for disassembling, assembling, and adjusting the gear box.

Motor and Timing Belt Replacement

Procedures for replacing the motor and timing belt.

Gear Box Cover Procedures

Guidelines for safely removing and installing the gear box cover.

SCREWS FOR ATTACHMENTS

Attachment Screw Details

Locations and sizes of screws for attaching machine accessories.

SPARE PARTS

Spare Parts Information

Lists of spare parts for models with/without thread trimmer and grease info.

TROUBLES AND CORRECTIVE MEASURES (WITH REGARD TO LUBRICATION)

Lubrication Troubleshooting

Addresses issues with oil flow to the face plate, hook, and noisy gears.

TROUBLES AND CORRECTIVE MEASURES (WITH REGARD TO SEWING)

Sewing Performance Issues

Troubleshooting thread breakage, stitch skipping, irregular stitches, and material feed.

TROUBLES AND CORRECTIVE MEASURES (WITH REGARD TO MECHANICAL COMPONENTS)

Threading and Trimming Issues

Troubleshooting thread skipping, breakage, and cutting problems at sewing start.

Needle and Cutting Issues

Addressing needle breakage and thread cutting failures.

ADJUSTMENT OF CLOTH SLIPPAGE

Cloth Slippage and Straight Sewing Issues

Resolving difficulties with cloth slippage and straight sewing.

FOR GENERAL EXPORT

Export Specifications

Details on supply voltage, frequency, current, and operating environment.

SETTING FOR FUNCTIONS

Electrical Box Settings and Operation

SC-905 box functions, mode change, display, and setting navigation.

Function Setting List and Details

Comprehensive list of functions and detailed explanations for key settings.

EXTERNAL OUTPUT;INPUT CONNECTORS

Connector Diagram and Specifications

Diagram showing external connector pin assignments and signal details.

FUNCTION SETTING OF THE OPERATION PANEL

Panel Initialization and Key Lock

Procedures for initializing panel data and setting the key lock function.

ERROR CODE LIST

PSC Box and Operation Panel Errors

Lists and explains error codes for the PSC box and operation panel.

Error History Reference

Instructions for accessing and reviewing past error information.

OPTIONAL CODE

Relay Cord Wiring Diagrams

Wiring diagrams for optional relay cords for standing machines and DC24V.

BLOCK DIAGRAM

System Block Diagram and Data Sheet

Block diagram of the system and data sheet for custom pattern needle entry.

DRAWING OF TABLE

Table Dimensional Drawings

Detailed dimensional drawings and specifications of the sewing machine table.

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