Tajima TME-HC Series: Common Problems & Fixes Guide

1. Frequent Thread Breaks high likelihood

How to tell

The machine stops frequently with a 'Thread Break' error, or you notice the thread snapping during operation. This can happen at various points in the stitch cycle.

Fix

1. Check the thread path for any snags, burrs, or obstructions from the cone to the needle.
2. Ensure the thread is correctly seated in all tension discs and guides.
3. Replace the needle with a new, correct size and type for your fabric and thread. Check for bent or dull needles.
4. Inspect the rotary hook for nicks or burrs. Clean out any lint or thread jams.
5. Adjust upper and bobbin thread tension. Start with factory recommendations and fine-tune as needed.
6. Verify the take-up lever is moving freely and not binding.
7. Check the thread take-up spring for proper tension and function.

Parts involved: Needles & needle bars → Thread path & tension → Rotary hooks & bobbin cases → Screws, springs & small parts →

2. Skipped Stitches or Poor Stitch Quality high likelihood

How to tell

Embroidery appears uneven, stitches are missing in areas, or loops are visible on the fabric surface. The design may look sparse or incomplete.

Fix

1. Ensure the fabric is properly hooped, taut, and stable without puckering.
2. Replace the needle with a new, sharp needle appropriate for the material.
3. Verify the needle is inserted correctly and fully seated in the needle bar with the scarf facing the hook.
4. Check the rotary hook timing. If the hook is not catching the needle thread loop consistently, timing adjustment is needed (consult your machine manual).
5. Inspect the presser foot height and ensure it's appropriate for the fabric thickness.
6. Clean out any lint or debris from the bobbin case area and under the needle plate.

Parts involved: Needles & needle bars → Rotary hooks & bobbin cases → Presser feet & sewing parts → Lubrication & maintenance →

3. Machine Not Moving (X/Y Axis or Head) medium likelihood

How to tell

The machine powers on, but the pantograph (X/Y frame) does not move, or the embroidery head does not cycle. You might hear a humming sound without movement, or no response at all when starting a design.

Fix

1. Check for any physical obstructions preventing movement of the pantograph or head.
2. Verify all emergency stops are disengaged and safety covers are closed.
3. Inspect the main power supply and connections to the machine.
4. If the X/Y movement is affected, check the connections to the XY driver board. Consider replacing the TAJIMA DU-10 XY Driver Board EH5404000000 MP-117-1-A for TME-HC if other checks fail.
5. If the head is not moving, check for mechanical binding or issues with the main motor or its driver card. The Tajima 0J2201101017 Electronic Driver Card MP-221-1B-A for TME-HC is a common component for head control.
6. Listen for unusual noises from motors or gears that might indicate a mechanical failure.

Multiple DU-10 XY Driver Board variants exist for TME-HC. Confirm the exact part number needed for your machine: TAJIMA DU-10 XY Driver Board EH5404000000 MP-117-1-A for TME-HC, Tajima DU-10 XY Driver Board MP-117-1-A for TME-HC, Tajima DU-10 XY Driver Board MP-117-6 for TME-HC, or Tajima DU-10 Driver Board MP117 0J2201000090 for TME-HC.

Parts involved: Motors & drivers → Circuit boards & electronics → Cables & wiring → Belts, pulleys & gears →

4. Unusual Noises or Vibrations medium likelihood

How to tell

The machine produces grinding, squeaking, knocking, or excessive vibration during operation that wasn't present before.

Fix

1. Perform a thorough cleaning of the machine, especially around the rotary hook, needle bars, and pantograph rails.
2. Lubricate all moving parts according to your machine's maintenance schedule. Pay attention to needle bars, take-up levers, and pantograph rails.
3. Inspect for loose screws or components, especially around the needle case and head assembly.
4. Check for worn gears or bearings. The Tajima ME0530000000 Take-Up Lever Drive Crank Rod Gear is a common wear item that can cause noise.
5. Ensure the machine is on a stable, level surface.

Parts involved: Lubrication & maintenance → Screws, springs & small parts → Belts, pulleys & gears → Shafts, bearings & bushings → Head & mechanical parts →

5. Data Transfer or Design Loading Issues low likelihood

How to tell

The machine fails to read design files from the floppy disk or USB device, displays 'File Not Found' errors, or takes an unusually long time to load designs.

Fix

1. Ensure the design file is in the correct format (.DST for Tajima) and is not corrupted.
2. Try a different floppy disk or USB drive to rule out media issues.
3. Clean the floppy drive head (if applicable) using a cleaning disk.
4. If using a USB reader, ensure it's properly connected and recognized by the machine. Consider replacing the TAJIMA KP-BS-T-113 USB Reader if the issue persists across multiple USB drives.
5. Check for any loose cables connecting the floppy drive or USB reader to the main control board.

The TAJIMA KP-BS-T-113 USB Reader is a common upgrade for older TME-HC machines that originally used floppy drives.

Parts involved: Floppy, USB & memory → Cables & wiring →