Ricoma RCM 1501 PT User Manual (English)

Michael ValdezAug 19, 2025

What to do if Ricoma Sewing Machine displays 'MAIN MOTOR OVERTIME!' error?

E
emily34Aug 20, 2025
If your Ricoma Sewing Machine displays a 'MAIN MOTOR OVERTIME!' error, here are a few things you can try: * Measure the voltage of the input power supply with a voltmeter and repair the power supply. * Turn off the machine, check if the power supply is lacking a phase, and examine whether the motor is overloaded. Turn the machine back on after these checks. * Replace the fuse. * Repair or replace the main motor or the main shaft board. * Replace the board.

Brand	Ricoma
Model	RCM 1501 PT
Category	Sewing Machine
Language	English

Brand

Ricoma

Model

RCM 1501 PT

Needles and Thread Guides

Special Note on Thread Guides

Guidance on using the last thread guide on the needle clamp for optimal thread path.

Needle Selection Criteria

Importance of selecting the proper needle for embroidery material and thread type.

Selecting Thread and Needle

Needle and Thread Application Chart

Table detailing recommended thread sizes for various needle sizes and fabric types.

Needle Anatomy and Function

Explanation of needle parts like front groove and scarf for proper function.

Control Panel and Operation

Design Loading Procedures

Step-by-step instructions for loading embroidery designs from disk.

Design Parameter Adjustments

Adjusting design size, rotation, and color sequence for embroidery.

Tracing and Setting the Design

Procedures for tracing the design path and preparing the machine for sewing.

Main Machine Adjustments

General Safety and Adjustment Guidelines

Safety precautions and general advice before performing machine adjustments.

Adjusting Needle Position

Procedure to ensure needles are correctly centered in the needle plate hole.

Presser Foot Height Adjustment

Adjusting presser foot height for optimal material contact and stitch quality.

Movable Trimmer Adjustment

Adjusting the movable knife position relative to the stationary knife for clean trims.

Adjusting the Hook

Setting the correct hook timing and position relative to the needle for stitch formation.

Adjusting Upper/Lower Dead Point

Setting the upper and lower dead points of the needle bar for correct timing.

Adjusting the Picker

Correcting the picker position to prevent trim-related thread issues.

Adjusting X-Belt Tension

Setting correct tension for the X-axis belt for smooth frame movement.

Adjusting Y-Belt Tension

Setting correct tension for the Y-axis belt for embroidery width accuracy.

Adjusting Take-Up Lever Position

Ensuring the take-up lever is correctly positioned for proper thread control.

Adjusting the Wiper

Correctly positioning the wiper and thread catcher for smooth operation.

Replacing Needle Bar Reciprocator

Step-by-step instructions for replacing the needle bar reciprocator assembly.

Trimmer Performance Issues

Movable Trimmer Angle and Position

Checking and adjusting the entry angle and position of the movable trimmer.

Movable Trimmer Assembly Status

Verifying correct assembly and alignment of the movable and fixed trimmer knives.

Trimmer Breakage

Checking for breakage in movable or fixed trimmer knives and replacement.

Machine Maintenance and Checkup

Periodic Checkpoint Guidelines

Importance of regular machine checks to prevent errors and ensure lifespan.

Oil Supply Schedule

Recommended schedule and points for oiling machine parts.

Grease Supply Schedule

Recommended schedule for applying grease to specific machine components.

Cleaning Procedures

Instructions for cleaning various machine parts and their recommended frequency.

Troubleshooting Common Errors

Main Motor Overtime Error

Troubleshooting steps for the 'MAIN MOTOR OVERTIME!' error message.

Slow Start Speed Errors

Addressing issues with slow start speed being too low or too high.

Stopping After 100 Error

Resolving errors where the machine stops after a specific operation or count.

Run Over Error

Troubleshooting the 'Run Over' error, possibly related to encoder or cables.

Color Change Error Troubleshooting

Resolving errors related to color changes, including overlimit and overtime.

Broken Thread Detection Errors

Diagnosing and fixing problems with the thread break detection system.

Thread Break Detection Issues

Troubleshooting irregular thread break detection and broken thread lamps.

Embroidery Head Engagement Errors

Resolving issues where embroidery heads do not engage or respond.

Stepping Motor Errors

Troubleshooting stepping motor errors, noise, and design distortion.

LCD Display Issues

Diagnosing and fixing problems with the LCD screen, including no display or errors.

Upper Thread Hook and UTH Errors

Troubleshooting issues with the upper thread hook and UTH not engaging or acting.

LCD Screen Display Problems

Resolving issues like screen stripes, no background light, or blinking LCD.

Frame Locking and Movement Issues

Troubleshooting problems with the embroidery frame not locking or moving continuously.

Design Out of Shape Troubleshooting

Addressing issues where the embroidery design appears distorted or out of shape.

Ricoma RCM 1501 PT User Manual

Table of Contents

Questions and Answers:

Ricoma RCM 1501 PT Specifications

Summary