Husqvarna Designer 1 Service Manual

							              61 104 72 47-26
Embroidery unit    -     Y-unit
Belt tension
Check
The belt should be adjusted in such a way that it should be possible to
push in the belt approx. 5 mm with a force of 0,2 kg.
Adjustment
Adjust by loosening the screw’s (A) and move the plate (B) until a good
belt tension is obtained.
Calibration of the end position, Y -unit.
Check
Move the Y-unit so that the calibration stop (A) is
against the hoop holder frame (B).
The distance between the hoop holder frame (C)
and frame stop (D) should be 2 mm.
Adjustment
1. Remove the holder (E) by removing the 2 screws (F).
2. Move the Y-unit so that the distance between (C)
 and (D) is 2 mm.
3. Turn the cogwheel so that the calibration stop (A)
is against the frame(B).
4. Mount the holder (E) with one leg on each side of
the belt.
Embroidery Unit 
						

							62104 72 47-26
Hoop holder
Dismounting
Remove locking washer (A), pull out the shaft (B) and remove the hoop holder.
Remove the two screws (C), pull out the spring (D) and remove the plate.
To remove the button, push out the pin (E) from the backside.
To remove the hoop sensor snap off the spring (F).
Mounting
Mount in reverse order.
NOTE ! After mounting
set calibration of the end position
The hoop sensor.
The embroidery unit has a sensor that indicates which hoop size that is inserted.
This is done by means of a photo-diode on the y-frame and a screen on the hoop
holder.
Check
1. Mount the embroidery unit on the machine
2. Get into the service program, menu 1
3. Calibrate the embroidery unit by touching XY - 
 , row 3.
4. Touch XY-
, row 3, the hoop now takes its center position.
5. Touch Sensor-
, row 3, the machine will now enter  service menu 2 -
sensor check.
6. The Hoop sensor square should now be activated=black, row 11.
Adjustment.
1. Get into the service program, menu 1
2. Calibrate the embroidery unit by touch XY - 
, row 3.
3. Touch XY-
, row 3, the hoop now takes its center position.
4. Touch Sensor-
, row 3, the machine will now enter
service menu 2 - sensor check.
5. Loosen the screw (A) and move the sensor holder (B) until
the hoop sensor square is activated=black, row 11.
6.  Tighten the screw (A).
7.  Re-check.
Embroidery Unit 
						

							              63 104 72 47-26
Step motor, Y-unit
Dismounting
Dismount the Y-slide cover.
Dismount the step motor cover.
Dismount the upper cover.
Dismount the calibration stop (A) by pulling it up.
Dismount the cable from the connection board.
Dismount the step motor by removing the 2 screws (B).
Mounting in reversed order.
Set thereafter
Calibration of the end position, Y-unit.
The hoop sensor.
Step motor, X-unit
Dismounting
Dismount the upper cover.
Dismount the lower cover.
Dismount the calibration stop (A) by pulling it up.
Dismount the step motor cable.
Dismount the step motor by removing the 2 screws (B).
Mounting in reversed order.
Set thereafter
The calibration of the end position, X-unit.
Embroidery Unit 
						

							64104 72 47-26
Fault finding diagram.
Always update the flash memory to the latest version before doing any checking or
adjustments, even if the flash memory already is of the latest version!
The touch panel does not function.
1. Calibrate the touch panel.
2. Check the surface for damage.
3. Check that the cable is correctly inserted.
4. Try a new touch panel
5. Try a new main circuit board
The LCD has no background light
1. Check that the cables are correctly inserted. Try new cables.
2. Change the light tube transformer.
3. Try a new LCD.
4. Try a new main circuit board.
The floppy disk drive does not read or is not working at all.
1. Reset the machine.
2. Check with another floppy disk. If the machine reads that one, the first one was defective
3. Check that cables are correctly inserted. Try new cables.
4. If the machine does not read the second floppy disk try a new Floppy disk drive.
5. If the machine still does not read from the floppy disk try a new circuit board.
The floppy disk drive is reading but then stops and
 The pop-up message “ No disk inserted ”, General disk fault” comes.
1. Check that it is an Husqvarna embroidery disk inserted.
2. Check the cables.
3. Try a new floppy disk drive.
4. Try a new circuit board
The buttons on the front panel does not function.
1. Check that none of the buttons of the machine stays pressed.
2. Check the contact area behind the buttons and the contact area on the push button boards.
3. Check that the guide boards are correctly assembled.
4. Check that cables are correctly inserted and not damaged.
5. Check the guide board for cracks in the lines and solders. Try a new push button board.
6. Try a new circuit board.
The LCD is not working at all or only partly.
(Shows wrong information, lines missing)
1. Check that the cable connections between LCD and circuit board are correctly inserted
and not damaged.
2. Try a new circuit board.
3. Try a new LCD.
The machine only runs at reduced speed.
If this occurs during service, check that the motor does not run in reverse.
1. Change motor.
2. Try a new circuit board.
The machine is completely dead. Motors and displays do not function.
1. Check the main cable.
2. Try a new transformer.
3. Try a new circuit board.
Fault finding diagram 
						

							              65 104 72 47-26 The machine does not work when the foot control is pressed, but works when
pushing the start button.
1. Check that the contact of the cord device of the cord is correctly pushed into the
potentiometer.
2. Check by means of a new foot control (potentiometer, cord device).
3. Try a new transformer.
The machine does not start when neither foot control nor start button is pressed.
1. Check that the bobbin stop sensor is not activated.
2. Try a new motor.
3. Try a new circuit board.
The machine races when switched on or started.
1. Check that the start button does not stay pressed.
2. If the machine only races when the foot control is connected then check the foot control.
3. Try a new circuit board.
The zigzag movement of the machine does not work correctly.
1. Check that the twin needle isn’t activated.
2. Check in the service menu 2 that the arms shaft sensor is working.
If error - check first that the cable between sensor board and Main PC board is correctly
inserted and not damaged.
Still error, replace sensor board.
3. Check that the cable connection of the step motor to the circuit board is correctly inserted
and not damaged
4. Check the signals of the circuit board to the step motor.
If step motor is working – replace circuit board.
If step motor is not working - replace sewing head, compl. or step motor.
The feeding movement of the machine does not work correctly.
1 . Check in the service menu 2 that the arm shaft sensor is working.
If error - check first that the cable between sensor board and Main PC board is correctly
inserted and not damaged.
Still error, replace sensor board.
2. Check that the cable connection of the step motor to the circuit board is correctly inserted
and not damaged
3. Check the signals of the circuit board to the step motor.
If step motor is working – replace circuit board.
If step motor is not working – replace step motor
The stitch length balance of the machine is not correct.
(Buttonholes, pattern stitches, letters)
1. Always use correct presser foot.
2. Check the pre-setting of the feeding step motor
3. Check that there is no friction in the feeding mechanism.
4. Adjust the stitch length balance.
The automatic thread tension does not work.
1. Check the cable connections between step motor and circuit board are correctly inserted
and not damaged.
2. Try a new step motor.
3. Try a new circuit board.
Fault finding diagram 
						

							66104 72 47-26 The machine does not alarm when the lower thread ends.
Before doing any service clean both diodes of the lower thread sensor and remove all fluff
1. Check the lower thread sensor in the service menu by rotating the hand wheel slowly
2. Check that cables to the circuit board are correctly inserted and not damaged.
3. Try a new lower thread sensor.
4. Try a new circuit board.
The thread cutter is not working
If the step motor is not working:
1. Check that the button is working.
2. Check that cables to the circuit board are correctly inserted and not damaged.
3. Try a new circuit board
4. Try a new step motor.
If the step motor is working but it is not cutting the thread:
1. Check that the thread cutter knife is positioned correctly.
2. Make sure the pickup is moving correctly.
3. Replace the knife.
The machine does not stop when the upper thread is finished or breaks.
Check the upper thread sensor in the service menu.
If OK:
1. Check the setting of the thread take-up spring and the thread tension.
2. Check the screens between the photo-diode of the upper thread guard so that it’s running
smooth.
If not OK:
1. Check that the cable to the upper thread guard sensor board is correctly inserted and not
damaged.
2. Try a new upper thread guard.
3. Try a new circuit board.
The machine stops and indicates that the upper thread is broken.
Check the upper thread sensor in the service menu.
If not OK:
1. Check that the sensor arm is correctly assembled on the spring
2. Check the setting of the thread take-up spring and the thread tension.
3. Check the screens between the photo-diode of the upper thread guard so that it’s running
smooth.
If OK:
1. Check that the cable to the upper thread guard sensor board is correctly inserted and not
damaged.
2. Try a new upper thread guard sensor board.
Try a new circuit board.
The presser foot lifter does not work.
Check in service menu that the presser foot sensors are working.
If OK:
1. Check if there is contact between the buttons and the push button board.
2. Check the cables from the step motor are correctly inserted and not damaged.
If not OK:
1. Try a new sensor or a compl sewing head.
2. Try a new sewing head slave board.
3. Try a new circuit board.
Fault finding diagram 
						

							              67 104 72 47-26 The buttonhole sensor does not work.
1. Make sure that the contact of the buttonhole sensor is correctly inserted and check its
function by using the service menu 2.
2. Try a new buttonhole sensor and check its function by using the service menu 2.
3. Check the cable from the contact of the buttonhole sensor to the slave board and the
circuit board are correctly inserted and not damaged.
4. Try a new sewing head slave board.
5. Try a new circuit board.
The side motion of the machine does not work at all.
1. Check the setting of the step motor of the side motion so that the screw does not get
caught in the cog segment.
2. Check the connection of the side feeding mechanism.
3. Check that the cable connection between the step motor and the circuit board are
correctly inserted and not damaged.
4. Try a new step motor.
5. Try a new circuit board.
The machine sews straight stitching only backwards.
If this occurs during service, check that the motor does not run in reverse.
1. Try a new circuit board.
The embroidery unit does not feed in all directions.
1. Check the calibration by using the service menu 1.
2. Check all cables of the embroidery unit are correctly inserted and not damaged.
3. Try a new motor.
4. Try a new circuit board.
The embroidery unit dos not work at all.
1. Check the calibration by using the service menu 1.
2. Check that all cables in the embroidery unit are correctly inserted and not damaged.
3. Check the locker switch and cable.
4. Try a new circuit board.
5. Try a new step motors
The embroidery unit does not sew the pattern correctly
1. Check that there is no sluggishness or play in the embroidery unit.
2. Check the belt tension of the embroidery unit.
3. Check the calibration of the embroidery unit
4. Check so that the machine raises the presser foot to the correct height.
5. Check the thread tension of the machine.
The machine does not recognise the 240x150 or 100x100 embroidery hoops.
1. Check the sensor for hoop in the service menu 2.
2. Check the cable and its connections in the embroidery hoop.
3. Try a new sensor.
Fault finding diagram