Table of Contents
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Table of Contents
Related Manuals for JUKI SC-120
Summarization of Contents
Preface
Operation Precautions
Safety guidelines for operating the sewing machine.
Operation
Name of Part
Identifies and labels components of the sewing machine.
Test Run
Procedures for initial setup and testing of the sewing machine.
SC-20 Power Indicator Box
Details about the power indicator LED on the SC-20 model.
SC-120 Control Panel
Description and functions of the SC-120 control panel.
SC-220 Control Panel
Description and functions of the SC-220 control panel.
SC-320 Control Panel
Description and functions of the SC-320 control panel.
Safety Circuit
Explanation of safety functions like machine lock and synchronizer malfunction.
Connectors for Standing Work
Details on connectors for standing work operations.
Production Control System and Needle-Up Stop Switch Functions
How to connect and use production control and needle-up stop functions.
Adjustment
Belt Tension
How to adjust belt tension to prevent damage and ensure proper operation.
Prevention Motor Vibration (for N company's motor)
Adjusting motor mounting to prevent vibration.
Checking and Correcting the Rotational Direction of Sewing Machine
How to check and correct the sewing machine's motor rotation direction.
Pedal
Adjusting pedal pressure, stroke, and variable resistors.
Maximum Sewing Speed
Adjusting low and maximum sewing speeds using control knobs.
Auto-lifter
How to use and adjust the auto-lifter function.
How to Reduce the Hand Light from Flickering (for single phase only)
Reducing light flicker caused by motor acceleration.
Functions
Power Supply Voltage
How to select and switch power supply voltages for the PSC box.
Functions Selection Switches
Explains DIP switches for configuring machine functions.
Increase of Control Panel Functions
How control panel functions vary with different control boxes.
Maintenance and Inspection
How to Replace the Sensor Potentiometer Set
Step-by-step guide to replacing the pedal sensor potentiometer.
Memory Battery Charging Monitor LED (SC-320 only)
Information about the memory battery monitor LED.
Motor Malfunction Detector LED
Explains LEDs indicating motor malfunctions.
Solenoid Monitor LED
Information on LEDs that monitor solenoid operation.
How to Replace Each Circuit Board
Procedures for replacing main, speed limiting, and transistor circuit boards.
Connector Connection Diagrams
Diagrams showing connector pin assignments for various functions.
Type of Rating Plates for SC Series of the PSC Unit
Information on identifying PSC unit types based on rating plates.
Block Diagrams
Electrical block diagrams for different machine configurations.
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