Tajima TMFX Electronics

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Electronics

Tajima TMFX Power Box

The Tajima TMFX machine electronics consist of the main power box, control panel and various other small boards such as head cards and joint cards.

List of boards generally found on the Tajima TMFX models:

Power Box

Shown in picture. The TMFX Power Box houses the Tajima TMFX's main power boards which include the 2 x DU-A, the S-card, and the Main card. All four boards are attached to the large heatsink chassis with screws and can be removed with T-handle 3.0mm hex keys. There is a large amount of heat sink compound normally on each board. There is an optional fan on the underside, generally on the four head and up. It is preferred that the entire power box is shipped when undergoing repairs.

DU-A

Power and control of the X/Y motors. Successor to the DU-10 XY card used in earlier Tajima DC/HC models. There are two per machine. They have switches to turn them on and off, the colors will be green or orange. The control panel will automatically turn off some of the cards, temporarily, in a few situations such as a floppy read command. When a warning is triggered on any of the XY board sensors it will turn the light red and not allow any commands from there. On power up, the cards remain orange until the control panel activates them.

S-Card

Power and control of the main shaft motor. This is the largest motor on the machine. This is the only card that has an optional plug in the back, which are labeled 100V and 200V. If you have 110V power then either plug works but it is not recommended, although the 200V only slightly leeches off of the main card's ability to provide power to the rest of the system, if anything happens to the S-card then the main card will also be damaged. If you have 200V or more from your wall power, then only use the 200V plug; using the 100V plug with 200V input may damage the S-card.

Color change card

Power to the color change motor. Also reads the color change potentiometer and some solenoids.

Head card

One card per head. Detects thread break signals from the head assembly, and powers some solenoids. If one is bad, it can interfere with signals of all, including the color change card. When configuring the control panel, it also asks to pick a head card type 1 or type 2, and if the choice is wrong then all thread break signals will be wrong and erratic.

Troubleshooting and Error Messages

The Tajima TMFX machine can produce the error messages

211

The TMFX is not at the "red"