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smoothly (turn the handwheel by hand), if it cannot be turned, please check the 
machine; 
2. Turn off the power, check whether the motor power connector is loose, plug it 
in and restart it; 
3. Check whether the upper needle stop position is correct, if not, please adjust 
the upper positioning position; 
4. If it still does not work normally, please replace the control box or spindle 
motor and notify the after-sales service. 

E10 

Electromagnet overcurrent 

1. Unplug the solenoid connector, if alarm E10, replace the control box and 
notify the after-sales service. 
2. If there is no alarm after removing the solenoid connector, please plug it back 
in 
1) Step on the front pedal to let the sewing machine perform thread clamping 
and back-tacking. If alarms, please turn off start back-tacking and end 
back-tacking, restart the control box, and then step forward. If alarms, please 
turn off the thread clamping function and restart the electronic control, and step 
forward again. If there is no alarm, replace the clamper. 
2) Step on the front pedal to let the sewing machine perform thread clamping 
and back-tacking. If it alarms, please turn off start back-tacking and end 
back-tacking, restart the control box, and then step forward. If there is no alarm, 
please turn off the thread clamping function and restart the control box, and 
open start back-tacking function, step forward again, if it alarms, please replace 
the back-tacking solenoid. 
3) Step on the front pedal to let the sewing machine perform thread clamping 
and back-tacking. If there is no alarm, please step back halfway to raise the 
presser foot. If it alarms, please replace the presser foot solenoid. 
4) Step on the front pedal to let the sewing machine perform thread clamping, 
back-tacking and half anti-side trample. If there is no alarm, please back step 
pedal to trim. If it alarms, please replace the thread trimming solenoid. 

E09 

E11 

The positioning signal of main shaft 

motor encoder is abnormal 

1. Turn off the system power, check whether main shaft motor encoder 

connector is loose or fall off, restore it to normal and restart the system. 

2. Check whether the motor zero point correction setting is correct; Reset the 

motor zero point correction; Whether there is oil on the encoder code plate, 

please clean it if there is any; 

3. If it still does not work normally, please replace the control box or main shaft 

motor and notify the after-sales service. 

E14 

Main shaft motor encoder signal is 

abnormal 

1. Turn off the system power, check whether the main shaft motor encoder 

connector is loose or fall off, restore it to normal and restart the system. 

2. Check whether the grating is installed correctly (whether the grating screws 

are tightened and whether the grating is in the center of the encoder). 

3. Check whether there is oil on the encoder code plate, if there is, please clean 

it up, and restart the system after recovery. 

4. If it still does not work normally, please replace the control box or main shaft 

motor and notify the after-sales service. 

E15 

Main shaft motor drive overcurrent 

1. Please check whether the motor power cord has bad 
contact; 
2. Please check whether the motor power cord is crushed; 
3. Please replace the control box or main shaft motor and notify the after-sales 

Summary of Contents for GT-288E

Page 1: ...connectors on the control box or motor 2 Threading needle 3 Raising the machine head 4 Repairing or doing any mechanical adjustment 5 Machines idling 14 Repairs and high level maintenance work should only be carried out by electronic technicians with appropriate training 15 All the spare parts for repair must be provided or approved by the manufacturer 16 Don t use any objects or force to hit or r...

Page 2: ...ng press set to constant stitch sewing mode Consecutive Reverse Sewing Multi segment Sewing If click set to consecutive reverse sewing mode If long press set to multi segment sewing mode switch to four segment sewing seven segment sewing eight segment sewing and fifteen segment sewing in sequence Presser Foot Lifting Setting Auto Function If click switch function off automatic presser foot lifting...

Page 3: ...tern freedom sewing mode selection interface n1 press to adjust n1 n9 1 2 4 Pattern Freedom Sewing Editing On the main interface long press to shift pattern freedom sewing mode editing interface n 01 01 short press the 4th column to adjust n01 n09 short press adjust 01 10 segment number adjust to setting pattern number segment number short press S key to confirm shift to corresponding pattern numb...

Page 4: ...for soft start 1 15 2 P09 Automatic constant stitch sewing speed rpm 200 4000 3700 Speed adjustment for automatic constant stitch sewing P10 Automatic end back tacking sewing after constant stitch sewing ON OFF ON ON After executing the constant stitch sewing the back tacking sewing will be executed automatically In any sewing mode mending stitch function cannot be used OFF After executing the las...

Page 5: ...l for thread trimming 30 500 130 P25 End back tacking compensation 3 0 200 158 Stitch compensation for end back tacking C section 0 200 action gradually delay The large value the shorter of the C section first stitch P26 End back tacking compensation 4 0 200 158 Stitch compensation for end back tacking D section 0 200 action gradually delay the large value the longer of the C section last stitch a...

Page 6: ...edom sewing mode selection 0 1 0 0 Controlled by foot pedal can be stopped and started at will 1 Touch the foot pedal to automatically execute a pattern sewing action P46 Motor stop with a reverse angle after trimming function ON OFF OFF P47 Adjust the reverse angle when motor stop after trimming 10 50 40 Start from the upper needle position and adjust the angle of the needle lift in reverse opera...

Page 7: ...F Start and stop testing with all functions P63 Testing C ON OFF OFF Start and stop testing without all function P64 Test run time 1 250 30 P65 Test stop time 1 250 10 P66 Machine protection switch selection 0 1 1 0 Disable 1 Testing zero signal P69 Pattern freedom sewing speed 100 3000 2000 P70 Type P71 Correction stitches distance of manual button A 0 5 0 0 P72 Up needle position adjustment 0 35...

Page 8: ...ange it will result the control box and motor abnormal or damaged P93 The starting time of the half back pedaling function ms 10 900 100 P95 Periodic signal of the presser foot first output action 10 100 100 P99 Starting tight seam stitch length 0 5 0 0 5 P100 Direction of starting tight seam 0 1 0 P101 The start angle of thread tension releasing 1 359 30 Thread tension releasing start angle defin...

Page 9: ... thrum 0 100 80 P118 Function selection of manual back tacking button in pattern mode 0 1 0 P129 Back tacking step motor zero point correction 500 500 0 P131 Normal stitch length 0 5 0 3 0 P132 Manual close stitches distance 0 5 0 2 0 P138 Foot lifting release buffer duty cycle 0 100 10 P139 Foot lifting release buffer delay time ms 0 200 35 P143 Tight seam mode selection 0 3 0 0 OFF 1 Starting ti...

Page 10: ...istance of manual button D 0 5 0 0 P174 Manual Switch B 0 6 3 0 OFF 1 half stitch 2 one stitch 3 continuous half stitch 4 continuous one stitch 5 Back tacking when machine stop or pause 6 Tight seam function P175 Manual Switch C 0 6 0 0 OFF 1 half stitch 2 one stitch 3 continuous half stitch 4 continuous one stitch 5 Back tacking when machine stop or pause 6 Tight seam function P176 Manual Switch ...

Page 11: ...Whether the grid voltage is higher than AC260V 2 If it is self generated power supply please reduce the generator power 3 If it still does not work normally please replace the control box and notify the after sales service E02 Low voltage 1 Whether to connect to low voltage 2 Reset 3 If it still does not work normally please replace the control box and notify the after sales service E03 CPU commun...

Page 12: ...If there is no alarm please step back halfway to raise the presser foot If it alarms please replace the presser foot solenoid 4 Step on the front pedal to let the sewing machine perform thread clamping back tacking and half anti side trample If there is no alarm please back step pedal to trim If it alarms please replace the thread trimming solenoid E09 E11 The positioning signal of main shaft moto...

Page 13: ...g stepper motor is stuck If it is stuck remove the mechanical failure of the machine first If it is normal check whether the encoder connector of back tacking stepper motor is loose or fall off and restart the system after returning it to normal 2 Check whether the grating is installed correctly whether the grating screws are fastened and whether the grating is in the center of the encoder 3 Check...

Page 14: ...he system after restoration 4 If it still does not work normally please replace the control box or back tacking stepper motor and notify the after sales service E87 Back tacking stepper motor locked rotor 1 Turn off the system power and observe whether back tacking stepper motor is stuck If it is stuck remove the mechanical failure of the machine first If it is normal check whether the power cord ...

Page 15: ...1 Pull thread air valve 1 24V 4 2 Hook thread air valve 2 24V 5 3 Suction air valve 3 24V 6 ...

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