Husqvarna Designer 1 Service Manual

Printed in Sweden
Made in Sweden
March 1999104 72 47-26
Replaces  104  72 45-01
SERVICE MANUAL 

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Contents
Directions for use 4
ESD4
Service tools 5
Service program
Upper thread tension - Functions of the service menu 3. 9
Sensor check - Functions of the service menu 2. 9
Calibration of the touch panel 10
Update of the memory 11
Covers
Upper rear cover 12
Lower rear cover 12
Front cover 13
Parts of the front cover 14
LCD14
Touch Panel 14
Floppy disk drive 14
Settings15
1. The play of the hook gear 16
2.  Setting the hook in relation to the feeding eccentric (after feeding) 17
3.  Belt...

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Dismantling and mounting
Base Plate 42
Transformer 43
Circuit board - Circuit diagram 44
Stop right circuit board 45
Sewing head 46
The step motor of the needle 47
The step motor of the presserfoot lifter 48
The thread tension compl. 49
The  hook cover compl, step motor house. 50
Parts of the  hook cover compl. 51
Feeding unit 52
Feed dog. 53
The side feeding mechanism cpl. 54
The step motor of the side feeding mechanism . 54
The step motor of the feeding unit 55
Hook compl....

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Directions for use
These service instructions are intended to be used by service workshop personnel, or by
 salesmen who carry out servicing their own districts. They assume a thorough knowledge
 of the handling of precision appliances and accessibility to service tools.
The manual is divided into two sections and covers all service operations and checks
which should be carried out when making a complete overhaul of a sewing machine.
The first section deals with the various settings which...

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Service tools
A reasonable requirement in a domestic sewing machine is that it should able to sew all
types of fabrics used in the home. The settings made when assembling and sewing-in
the machines are those most suited to give the best results in the majority of fabrics and
fabric combinations. In doing so, consideration has been given to the requirements of
different markets. This does, however, mean that when sewing extreme fabrics, better
results may be obtained in...

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Press
Service program
In order to facilitate the checking and setting of the different functions of
the machine there is a service program.
Handling
Get into the service program of the machine by pressing the reverse feed button and
the sensor  foot pivot button  while the main switch (A) is switched on.
The display will now show the Designer 1 service menu 1. See illustration below.
Service Program 

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Service program
Functions of the service menu 1.
On the top of menu The revision of the program
Service Menu 1
Row  1
Toucharea
Needle/Feed Cal 0Upper needle position - Checking the centre position of the needle
step motor.
Lower needle position - Checking the centre position of the feeding
step motor.
NeedleLpos Is used for  pre-setting the step motor of the needle.
The step motor of the needle now takes its left calibration position.
NeedleOpos Is used when setting the...

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Service Menu 1
Row 3
Toucharea
Servo-sewing  head On/Off Sewing heads Servo  function ON and OFF.
Servo - sewing head Cal Servo takes its calibration position.
Embroidery Unit Cal Is used to check the sideways and lenghtwise
movement of  the embroidery unit.
Embroidery Unit Cent The embroidery hoop sensor arm takes its centre position.
DispDisplay test. A square pattern shall change between
blue,red and green. After the check is done the machine
will automatically enter the service menu 1...

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Sensor check - Functions of the service menu 2.
Operation
Get into the service program. Touch Sensor-
, row 3.
Upper thread tension - Functions of the service menu 3.
To facilitate the setting of the upper thread tension there is an electronic adjustment
in the Service menu 3.
Operation
Get into the service program.Touch Tension--,row 2. The machine will enter Service Menu 3.
Toucharea
2,5x0The machime sews a straight stitch 2,5 mm
4x0The machine sews a straight stitch 4 mm...

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1
2
First calibration  m ark
Second  calibration mark
Calibration of the touch panel
How to synchronize the touch area of the touch panel with the symbols on the screen.
Get into the service program of the machine.
Press the needle stop button 
  or  touch Touch,row 2 in the service menu 1.
1. Touch with a  blunt object in the center of  cross 1 ,indicated  First calibration mark
on the illustration. When the colour changes from black to green the first calibration of
the touch panel is...