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BECS-1X9　Series　Special　Embroidery　Control　System

Purchase　Guide

Thread　Break　Detect　Board　Problem　Analysis

How　to　Choose　the　Drivers　of　Embroidery　Machine

New　Multi-sequin　Control　System　(D　series)

Thread　Break　Detect　Board　Problem　Analysis

post at:2007-3-19 15:47:22

I. The machine doesn’t detect after thread break.

1. First check whether thread break detect is set as yes in the parameter setting.

2. In parameter setting thread break detect has been set as yes. But after thread break in all heads, the machine still doesn’t detect.

Check the indicator LED of the main board:

D29, D30 for machine type 91

D16, D18 for machine type 95

L35, L36 for machine type 07

XJ, DXQD for machine type 08/18/28/X16/X26

When the machine is under normal running conditions, D30 of machine type 91,D18 of machine type 95, L35 of machine type 07, XJ of machine type 08/18/28/X16/X26 should be flashing, and D29 of machine type 91,

D16 of machine type 95, L36 of machine type 07, DXQD of machine type 08/18/28/X16/X26 should be lightening. Otherwise there must be problem with the main board and the main board needs to be changed.

3. When there is no problem with the above indicators,

Check the link between CZ018 (for 91/95)/ A8 plug (for 07)/ CZ0812 (for 08)/CZ5012 (for 18/28)/CZ669(for 158)/CZ609(for 108)/CZ709(for 118/128)/CZ7913(for X16/X26) and the thread detect board of the last machine head (3 position thread detect board is cZ1 and 2 position thread detect board is CZ011). If it’s not linked, that means that signals are not transferred to the thread detect board and you should repair it to get link.

II. One machine head doesn’t detect while others operate well.

1. There is problem with the thread detect board of the head which needs change.

2. Check the plug connection of CZ1 (3-position thread detect board) or CZ011 (2-position thread detect board).

III. Wrong alarm (indication lights of all the thread detect boards turn on when the machine runs for several circles.)

The thread detect board is damaged. (the board number: DXYMB, EF104, EF119)

IV. Thread breaks in one head and then all the thread detect board indication lights are on.

1. Check whether the 12V voltage is right. (When it is lower than 10V, the power needs to be changed.)

2. It can be caused by the thread detect board problem of one machine head. Remove the signal lines of the thread detect board one by one until you find the damaged board and change it.

3. Check according to I. 3 to see if the signal lines are in short circuit.

V. When one machine head repairs stitch after thread break, all the other indication lights are on.

1. Check the indication light D36 (for machine type 91)/D21 (for machine type 95)/L37 (for machine type 07)/FSW (for machine type 08/18/28). When the machine repairs stitch, these lights should be on. If not, the main board has problem and needs to be changed.

2. Check according to I.3 to see whether the signal lines are connected.

VI. False alarm for bottom thread detect function If a certain needle of one head can’t work and there is alarm, check first the small wheel of the needle position. If OK, pull off the connection cable between the head’s bottom thread board and thread break detect board to see if there is still the false alarm. If no, the bottom thread detect board needs to be changed.