Janome Memory Craft 6000 sewing machine Servicing manual

 Printed in Japan
NDEX
SECTION I PARTS LIST 1 - 21
SECTION II THE SELF-DIAGNOSIS 22 - 52
SECTION III MECHANTCAL ADJUSTMENT 53 - 56
SECTION IV TROUBLE-SHOOTING OF ELECTRONIC AND
ELECTRICAL COMPONENTS 5/ - 117
Shielding Plate
Arm Shaft Sensor
Take-Up Lever
MEMORY
CRAFT 6000 MACHINE CONCEPT
Needle Bar Vibrating Rod
—
Needle Bar Supporter
Needle Bar
Stepping Motor for Stitch Length
Magnetic Top-loading
Fuil-Rotary Hook
Micro-Computer
Pattern Number Indicator
Mode Key
Stitch Selection Circuit
(Board A)
Stepping Motor for
Stitch width
Pattern Selector Button
LED(Light Emitting Diodes)
Manual Stitch-Zigzag width
Manual Stitch-Length Knob
Transformer
Speed Control Circuit
(Board C)
System Control
Circuit (Board B)
Read Only Memory
SECTION II SELF-DIAGNOSIS
1-1 Introduction
Memory Craft 6000 is a so called "Computerized Sewing Machine" in which a built-in micro computer
controls the feed, the zigzag width, the main shaft revolution and the torque and revolution of
the drive motor according to the digital memory stored in the memory chips.
As the results, this machine offers such unique features as availability of a great number of
patterns and stitches, automated settings for the stitches, memorizing a sequence of series of
patterns and stitches, automatic regulation of the maximum sewing speed for each stitch pattern,
the needle stop at the top and bottom positions,etc.
Since the electronic circuit boards and other electronic parts had gone through rigid and multitude
of tests before they were put to use, you will find them trouble-free and most reliable.
However, if deficiency occurs, you should firstly consult with Trouble Shooting Guide included
with the instruction booklet.
If cause of the problem is considered to be electronical rather than mechanical, then utilize the
Self diagnoser built in your Memory Craft 6000. (The Self Diagnosis with built in Diagnoser)
The Self Diagnosis with built in Diagnoser
The difficulty which a sewing machine dealer or service man may face when he is dealing with an
electronic sewing machine like Memory Craft 6000 will be to diagnose any deficiency resulted from N
an electronic problem. И
'" e a
In case of our previous model Memory 7 a separate diagnoser unit was built for this purpose \
but this unit was comparatively expensive.
Now, the first time in the world for a sewing machine, Memory Craft 6000 has its own diagnoser built
in with each unit, so that a service man may be able to diagnose any problem without resorting to
a special equipment.
There is a switch hidden underneath the machine bed or in the base. By setting this switch at "TEST",
the LED displays in front of the machine will turn to “TEST MODE".
There is also a plastic card called "Diagnosis Chart" available for service man's use.
It will take only a few minutes to complete the whole checkings necessary and the displays will tell
you of the conditions immediately.
= 22 —-
1-2
What the Self-Diagnosis tells you
The diagnosis procedures or operations to be followed (22 steps, representing step signal Ol to 22)
are clearly shown on the "Diagnosis Chart".
Each step will diagnose the following conditions:
(Step Signal) (Points to be diagnosed)
01 Main switch and LEDs on board A
02 Mode key
03-06 Buttons of control key board
07-08 Bobbin winder switch
09-10 Needle bar swing (Volume control)
11-12 Feed regulator (Volume control)
13-18 Both stepping motors for feed and needle swing (Actuation)
19 Foot controller (Input volume)
20 Machine drive motor (Output volume)
21 Machine drive motor (Speed control)
22 Machine drive motor (Automatic brake)
1-3 Advice on diagnosis operations
1) Always turn off the power switch and momentarily unplug from the power supply if wrong step was taken.
Start again from step 01 and follow through each step.
2) If you skip any of the steps or do not start from step 01, the machine will not diagnose.
3) If any defects are found at step 01 to 03, correct the defects in accordance with the instructions
shown on the chart and test steps 01 to 03 again to make sure.
Then proceed to step 04.
4) From step 04 and onward, proceed to the last step in order, even if LED lighted at "1" indicating
a defecting condition with certain parts.
After completion of whole procedures to step 22, the "TEST RESULT" tells you the machine conditions
with the signals either "Co" or "Er". |
In case of "Er", the "TEST RESULT''also indicates where to be adjusted and/or replaced.
* In case of "TEST RESULT","Er', try again to confirm the same test result.
IMPORTANT
When the machine does not work properly though "TEST RESULT" is"Co" for correct condition, check the
mechanical areas referring to the Servicing Manual for MEMORY CRAFT 6000.
If you have previous experience of adjusting or replacing electronic parts on MEMORY 7, it is easier
for you to do the job as the replacement and adjustment procedures are detailed in this book.
If you feel difficult to do the job by yourself, contact your supplier to obtain their advice.
= 23 —
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24
OPERATION PROCEDURES OF THE SELF DIAGNOSER
STEP
PROCEDURES
CORRECT CONDITION
INCORRECT CONDITION
ACTION
Plug the machine in to
the power supply.
1) Turn the lamp switch ON-and OFF
After checking, turn the light
2)
3)
4)
OFF,
Digital LED light is set ON
all together,
LED of tho pattern indicator
Light is ON one by one in order
to check NO, 10,13,........39.
Function LED light is ON all
together and progresa to the
next step after NO.3 checking,
MIE the lamp does not work at the correct
condition 2), 3), 4).
1) Replace the lamp.
2) Uf LED light is ON more than one 2) Replace the printed
lights or no Tight ON. wiring boad A.
3) LE none of LED light is ON
(including LED -A).
a) The sewing machine's lamp is ON. 2) Check the LED 1,LED 2
lights are ON under-
neath the base.
OPERATION PROCEDURES is as follows:
LED 1 LED 2 CHECK POINT ACTION
1) Check 2.5A fuse on 1) Replace the transformer
printed wiring boad C.|2) Replace the printed
2) Check 1.6A fuse and wiring boad B.
2,5A Euse on printed 3) Replace the printed
wiring boad 8, wiring boad A.
NO LIGHT ON J mmm mr ee a
(NOTE)
If 2,5A fuse on printed 1) Replace the printed
wiring boad B is blown wiring boad C.
out after the replacement}2) Replace the printed
wiring boad B.
LIGHT | NO LIGHT 1) Check 1.6A fuse on the|l) Replace the printed
ON ON printed wiring boad B. wiring boad B.
2) Replace the printed
wiring boad A.
LIGHT ON 1) Replace the printed
wiring boad B.
2) Replace the printed
wiring boad À.
25
OPERATION PROCEDURES OF ‘THE SELF DIAGNOSER
SLED PROCEDURES CORRECT CONDITION INCORRECI CONDITION ACT LON
3-b) If sewing machine lamp 15 ON. Check the sewing machine
lamp.
In case of the sewing machine lamp Replace the sewing machine
wiring 1s blown out, Yamp.
If LED !, LED 2 lights is not ON Replace the foot control.
underneath the base. Replace the plug holder unit
3-¢) 1f sewing machine motor rotates(runs)| Replace the printed wiring
high speed only. boad C.
hk ok
xxx ALL of faulty parts should be replaced
after the checking,
Then insert the power plug in to the
sewlng machine to check it with the
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2 Shift the B switch to [At "0" side of digital indicator If LED-A light does not change from Replace the printed wiring
the B 2 position. lights of LED-A ls flashing when flashing to ON, boad A.
"y" switch is shifted at "B 1" or Replace the printed wiring
"во", Боай В,
Set the "B'" switch at "B 2" positiof
at that time the LED-A light is
"ON" dustead of flashing.
-
Shift the "B" switch [At "2" side of digital indicator Light of LED-A does not change. Replace the printed wiring
to the "B 1" position, [light of LED-A is changed from boad A.
(lashing to ON. Replace the printed wiring
boad B.
Shift the "B" switch LED-A lights ON from flashing. LEU-A does not light ON from flashing. Replace the printed wiring
to the "B 3" position. boad A.
Replace the printed wiring
boad B.
Shift the "B" switch Progress to the STEP 3, Do not progress ta the STEP 3. Replace the printed wiring
to the "Bl" position. boad A.
Replace the printed wiring
boad B,
OPERATION PROCEDURES OF THE SELF DIAGNOSER
STEP
PROCEDURES
CORRECT CONDITION
INCORRECT CONDLTION
ACTION
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A Vel EN SNA Baa mkt divi Mf? Wo fe WOE AS gr dm Tek ded Чит Her tl We М фа ES
Press the switch button
Erom C,D,E,rerscsciroao
to R,S,T.
Light of LED should be changed
to press the switch buttons.
Kk
kkk FROM STEP 4:
If there 1s any faulty point
at half way of inspection from
STEP 4, the self diagnoser
indicates the taulty point at
the end of checking.
You can continue to check unti
the last checking point.
Then replace the parts.
from flashing to lighting in order
xxx
КЖ
4)
5)
RA
NA
1
Different light of LED is ON when
button is pressed
Light of LED does not progress to the
next point of LED when the switch
button is released.
More than two lights of LED are ON
when the switch button is released.
NOTE: In this condition, flashing lights
of digital indicator should show the
strength and weakness of lighting
on the Indicating boad.
If not, follow the instruction of
ACTION.
After the replacement, Insert the
power plug {nto the sewing machine
and check it with the self diaguoser.
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Light of LED does not change from
{lashing to lighting.
Light of LED does not progress Lo the
next point when the switch button is
pushed between C and T keys,
After the replacement, insert the powq
plug to the sewlng machine and check
it with the self diagnoser.
[£ there is any faulty poínt from
! to 3 steps, the self diagnoser does
not progress to the next step so that
the faulty parts should be replaced
al cach step,
Repeat the checking from begining of
the step,
switc
Replace the printed wiring
boad A.
Replace the printed wiring
boad B.
eh Tp Bo WE Sa rte te te “te A TR нА TRE RAY ph mth fT РН НМ МР Li lit —]
Replace the printed wiring
boad A.
E
Replace the printed wiring
boad B.
=
OPERATION PROCEDURES OF
TUN SELF DIAGNOSER.
STEP PROCEDURES CORRECT CONDITION INCORRECT CONDITION ACTTON
4 Push the "U" switch. 1) LED light on K'key is "ON". 1) LED Light of K key fs not "ON" when Replace the printed wiring
Then progress to the next the "U'" switch fs pushed. boad À or F.
step. In this case, push the "L" key switch.
If light of "L" key is "ON", it is Replace the printed wiring
indication of the faulty point, boad B.
5 Push the "V* switch 1) LED light of K key is ON’. 1) Same as step 4
Then progress to the next
step.
6 Push the "P'" switch 1) Same as step 4 1) Same as step 4 Replace the printed wiring
(Clear). boad A.
Replace the printed wiring
boad B,
7 Shift the bobbin winder 1) LED light of "K" key is "ON, 1) LED light of "L" key is "ON". 1) Adjust the bobbin winder
~ing shaft to the right Progress to the next stép. "L" key indicates the faulty point. unit mechanism.
Push the "K' key. 2) Replace the printed
wiring boad A.
3) Replace the printed
wiring boad B.
8 Shift the bobbin winder 1) Same as step / 1) Same as step 7. 1) Same as step /
-ing shaft to the left.
Push the "K" key.
9 Turn the dials" to thd 1) LED light of "K" key is "ON" 1) LED light of "L" key is "ON" and 1) Replace the printed wiring
left side(Indicator 15 and progress to the next step, indicates the faulty point. boad A.
at 0). Progress to the next step. 2) Replace the printed wiring
Push the "K' key. boad B.
Le mm im am a a a a A AAA AAA AAA mm mamma num mm m se mem see em
10 Turn the dial "S" to 1) Same as step 9 1) Same as step 9. 1) Same as step 9.
the right side,
(Indicator is at 7).
Push the "K" key.
11 Turn the dial "T" to 1) Same as step 9. 1) Same as step 9. 1) Same as step 9.
the left side.
(Indicator is at 0).
Push the "K" key.
28
OPERATION PROCEDURES OF THE SELF DIAGNOSER
incorrect results at step 16
to 18 if you do not turn the
balance wheel toward you with
your hand. Make sure the
balance wheel 1s turned toward
you and check the movement of
feed dog.
STEP PROCEDURES CORRECT CONDITION INCORRECT CONDITION ACTION
12 Turn the dial "T' to 1) Same as step 9. 1) Same as step 9. 1) Same as step 9.
the right.
(Indicator is at 5)
Push the "K' key,
13 Needle is set at LEFT |1) LED light of "K" key is "ON" 1) Push the "L'" key. 1f light of LED is 1) Adjust the zigzag
needle position. and progress to the next step. "ON", start the step 16. mechanism.
2) Replace the stepping
motor of zigzag width
regulator.
3) Replace the printed wirin
boad B.
14 Needle is set at 1) Tf it is correct position, 1) Push the "L'" key, if needle position 1) Same as step 13.
MIDDLE needle position] push the "K' key and progress is not at MIDDLE needle position.
to the next step.
15 Needle position is set |1) If it is correct position, push | 1) Push the "L" key if the needle position 1) Same as step 13.
at RIGHT needle the "K" key and progress to the is not at RIGHT needle position.
position, next step.
16 1) Check the backward movement of | 1) Push the "L" key, if the movement of 1) Adjust the feed mechanism}
feed dog. feed dog is not backward. 2) Replace the stepping
2) Push the "K" key, 2) Then progress to the step 19. motor of feed regulator.
3) If LED light of "K' key is ON, 3) Replace the printed
progress to the next step, wiring boad B.
2) If the stepping motor of feed regulator 1) Replace the stepping
or the printed wiring boad B is in- motor of feed regulator.
correct condition,LED light of the "L''| 2) Replace the printed
key is ON automatically and progress wiring boad B.
to the step 19,
kkk
kE The self diagnoser indicates
29
7
OPERATION PROCEDURES OF THE SELF
DIAGHOSER
control with your foot,
motor rotates(runs) SLOW speed
and STOP.
FAULTY PARTS
* Printed wiring boad В.
* Printed wiring boad B.
* Printed wiring boad A.
STEP PROCEDURES CORRECT CONDITION INCORRECT CONDITION ACTION
17 1) Push the "K" key if it is correckl)Push the "L" key if the movement of the |1) Same as step l6.
condition. feed dog is incorrect.
2) Progress to the next step,
Turn the balance
wheel toward you.
Check the movement
of the feed dog.
18 1) Push the "K' key if it is 1) Push the "L'" key if the movement of thd 1) Same as step 16.
correct condition. feed dog is not 5.0 mm.
2) Progress to the next step.
Turn the balance
wheel toward you.
Check the movement
of the feed dog.
19 1) Press the foot 1) LED light of the "K” key indi- 1) Push the "L' key if LED light does not [1) Replace the foot control.
control. cates correct condition.” indicate at the "K" key. 2) Replace the printed wiring
Progress to the next step 20, 2) LED light of the "L" key indicates boad B.
the incorrect condition, then progress |3) Replace the printed wiring
to the next step 20. boad C or the seving
machine motor.
20 1) Press the foot con-(1) Sewing machine motor rotates 1) LED light of the “L' key indicates the |1) Replace the motor or the
trol continually SLOW SPEED-HIGH SPEED~-SLOW incorrect condition if motor does not printed wiring boad C.
from step 19. SPEED and STOP, rotate, 2) Replace the printed
2) LED light of the "K'" key indi- | 2) Then progress to the next step wiring boad B.
cates good condition.
3) Total results of inspection is
indicated at the "A" (DIGITAL) 3) If there is any faulty parts except 1) Replace the printed
position. motor as shown below,LED light of the wiring boad D.
L' key indicates faulty point. | 2) Replace the printed
Then total results of inspection is
; ; Lo Hat o. wiring boad B.
If sewing machine ig faulty at indicated at "A"(DIGITAL) position. 3) Replace the printed
the step 19 or you release the foot wiring boad A.
OPERATION PROCEDURES OF THE SELF DIAGNOSER
base,
with the self diagnoser is
indicated at the "A" (DIGITAL)
position when LED light of the
"K'" key indicates correct con-
dition,
STEP PROCEDURES CORRECT CONDITION INCORRECT CONDITION ACTION
In this step, if Che self diagnoser
indicates correct condition when motor
has noisy sound or uneven rotation,
take off( switch off) the power supply
from the sewing machine,
Slide the changeover key from TESTposition
to NORMAL SEWING position.
Set the slow speed condition, 1) Replace the printedwiring
the motor is still having the noisy boad B.
sound or uneven rotation with the slow 2) Replace the printed wiring
speed condition, boad C.
21 1) Check the £lashing |) Push the '"K" key, if the LED~3 |1) Push the "L" key ,if LED-3 light 1) Replace the printed wiring
light of the LED-3 is flashing. not ON. boad C.
underneath the base.?) Total results of inspection 2) Total results of the inspection with 2) Replace the motor.
with the self diagnoser is the self diagnoser is indicated at 3) Replace the printed
indicated at the" A" (DIGITAL) the "A" (DIGITAL) position when LED wiring boad B.
position when LED light of the light of the "L" key indicates faulty
"K" key indicates correct con- condition,
dition, 1) Replace the printed wiring
boad B.
2) Replace the printed wiring
boad C.
3) Replace the sewing machind
motor,
22 1) Check the flashing |) Push the "K" key, if the LED-4 1) Same as step 21. 1) Same as step 21.
light of the LED-4 is flashing,
underneath the 2) Total results of the inspection
31
TOTAL RESULTS OF THE SELF DIAGNOSER CHECKING
1f these steps are all cleared,sewing machine condition is indicated at LED-A and FUNCTION LED.
In case of good condition: 1) LED-A (DIGITAL INDICATOR) indicates Г, Г
2) FUNCTION LED does not indicate.
In case of faulty condition: 1) LED-A( DIGLTAL INDICATOR) indicates E Г
2) FUNCTION -LED indicates faulty position or [aulty parts.
- Description of FUNCTION LED | em Faulty condition or replacement parts. —
LED for MEMORY Printed wiring boad A or T.
LED for TURN OVER MEMORY Printed wiring boad В.
LED for STOPPING STITCH Printed wiring boad C or sewing machine motor.
LED for TWIN NEEDLE Upper shalt senser.
LED for SLOW(LOWER) SPEED Foot control.
LED for STITCH WIDTH Stepping motor for zigzag width regulator.
LED for STITCH LENCTH Stepping motor for feed regulator,
LED for length of the pattern Adjustment of the zigzag mechanism.
NOTE: FUNCTION LED indicates more than one lights in case of the faulty parts(faulty condition).
= 32 —
TO ADJUST DROP FEED POSITION
Drop feed
adjusting lever
и
Set screw
vd
Drop rod
Drop lever
7 with hand
/ Drop rod
Move it to A direction
Drop feed dial
CORRECT SETTING
Arie
+ When drop feed dial is set at "AAA ", feed dog
should be located under needle plate.
When drop feed dial is set at "_MAMA. ", feed dog
should be located above needle plate with balance
wheel being turned toward you one turn.
TO ADJUST
1. Tilt the machine back until it rests on flat table.
2 Remove circuit cover and bed cover. (See p. 56)
3. Loosen screw.
4
Set drop feed dial at "_4
La
Move drop feed adjuster lever in the direction of
"A". Then tighten screw in condition that drop rod
butts against drop lever.
6. Refit circuit case and bed cover. (See p. 56)
— 33 —
TO ADJUST NEEDLE DROP POSITION
Machine setting
| Pattern en
Pattern -- =l3|
Zigzag width-- 7
dial
O
Zigzag
More
than | More than
0.2 mm | 0.2 mm
|
OS à
Lund LU
=
Needle bar
supporter
x
pall Set screw
N Needle bar supporter
connecting rod
Zigzag width rod
A 7
UN
7
Turn to A or B Set screw
direction :
width arm
Connecting rod
CORRECT SETTING
When pattern 11 in Mode I is selected, needle
should enter the center of needle hole on needle
plate.
«+ When pattern 13 is selected and manual stitch width
knob is set at "7", the clearance between needle and
edge of needle hole on needle plate, in both of left
and right needle down positions should exceed 0.2 mm
respectively.
TO ADJUST
1. Remove face plate and presser foot. (See p. 54)
2. Switch on the power and select pattern 11 in
Mode I.
3. Revolve balance wheel one turn, then position
needle at its lowest point.
4. Loosen screw and move needle bar supporter toward
left or right. Tighten screw in condition that
needle locates in center of needle hole.
NOTE: In case adjustment cannot be made satisfactorily,
remove top cover and loosen screw. Rotate
zigzag width rod about 90 to 180 degrees then
tighten screw.
5. Select pattern 13 in Mode I. Press manual stitch
width knob and turn it to "7".
6. Turn balance wheel to make sure the clearance
between needle and edge of needle hole on needle
plate, in both of left and right needle down
positions should exceed 0.2 mm respectively.
7. Switch off the power. Refit presser foot and face
plate. (See p. 54)
« 34 —
TO ADJUST PRESSER BAR HEIGHT AND DIRECTION
Machine setting
i |
Presser
foot A ке
Pattern . +11
Drop feed !
| dial "on
Presser bar lifter
Set screw
CHECK POINT
Presser foot A
Needle plate
and presser
foot shoud
Кош, ре pararell
Needle
Needle plate
groove for
feed dog
Center indicating
Feed dog
Needle plate
line
CORRECT SETTING
The correct alignment of presser bar should be in a
straight line between needle and slit of zigzag foot
A.
The height of presser bar should measure 6 mm
between needle plate and bottom of zigzag foot A.
CHECKING CONDITION
*
Use zigzag foot A.
Select pattern 11. in Mode I.
Drop feed dog with drop feed dial at "A
Before adjustment, make sure that center needie down
position is correct.
TO ADJUST
1. Remove face plate. (See p. 54)
2. Raise presser foot lifter and loosen screw.
Adjust height and direction of presser bar.
Then, tighten screw.
Lower presser foot lifter. Lower needle into
needle hole on needle plate and check if needle has
been in a straight line with the slit of zigzag
foot A.
Both left and right sides of zigzag foot should be
even to the feed dog slots in needle plate.
Refit face plate.
10 ADJUST NEEDLE BAR HEIGHT
Machine setting
| pattern a i 10 |
| Pattern -- = 11]
Face plate cover
Needle bar
connecting
stud set screw
>
Shuttle race
body
LU
Clearance
sh
Groove of the Po ou ое
needle bar | | duatize
Pa
Twin needle
CORRECT SETTING
The distance between tip of horizontal rotary hook and
upper edge of needle eye should be in range of 1.6 mm
to 2.0 mm when tip of rotary hook meets the right
side of needle swung down to the right with straight
stitch pattern No. 10 in Mode I.
CHECKING CONDITION
‹ Before adjustment, make sure that Hook Timing is
correct.
TO ADJUST
1. Remove needle plate and bobbin holder, then open face
plate and remove sewlight bulb.
2. Turn balance wheel toward you setting needle bar at
its lowest point.
3. Switch on the power and select pattern 10 in Mode I.
4. Loosen screw.
5. Turn balance wheel toward you until tip of rotary
hook meets the right side of No. 14 needle.
6. Raise or lower needle bar in order to get the correct
distance between tip of rotary hook and upper edge
of needle eye. Then tighten screw.
7. Select pattern 11 in Mode I and replace needle with
twin needle. Then check both clearances between
needles and the edge of the needle plate slot as
shown.
8. Refit bobbin holder and needle plate.
9. Turn off the power and refit sewlight bulb.
Machine setting
Pattern eee 10
Pattern ———-CD 11
Face plate cover
Lamp
Set screw
EASIER ADJUSTMENT OF NEEDLE BAR HEIGHT
Needle bar
Master
needle
Hook timing
gauge
— Master needle
Shuttle race
unit
Setting
position
hicok timing guage
CHECKING CONDITION
Before adjustment, make sure that Hook Timing is
correctly adjusted.
Use master needie.
Use needle bar height gauge.
TO ADJUST
1.
2
3.
4
Un
10.
Remove needle plate and bobbin holder.
Attach master needle.
Set gauge.
Open face plate cover. Loosen screw.
Remove sewlight bulb.
Select pattern 10 in Mode I.
Turn balance wheel toward you for setting needle
bar at its lowest point.
Move needle bar until master needle comes to
touch gauge. Face groove on needle bar toward
front and tighten screw.
Select pattern 11 in Mode I and replace needle
with twin needle. Then check both clearances
between needles and the edge of the needle plate
slot are even.
Refit bobbin holder and needle plate.
Switch off the power and refit sewlight bulb.
- 37 >
TO ADJUST HOOK TIMING
Machine setting
= en
= и)
Bobbin
holder
Lowest point of
needle
Shuttle
body
[
|
case cover
Wiring circuit
Lower shaft timing
gear set screw
Needle No, 14
Г
И
3.4 + 0. 15mm
CORRECT SETTING
The standard height of needle point from its lowest
point of travel should be in range of 3.25 to 3.55 mm and
tip of rotary hook should meet exactly the right side
of No. 14 needle when pattern is selected at "10" in
mode 1.
CHECKING CONDITION
+ Select pattern 10 in Mode I.
+ Use No. 14 needie.
TO ADJUST
1. Remove needle plate and bobbin holder.
2. Tilt the Machine back until it rests on flat
table.
3. Remove circuit cover and loosen 2 pcs. of screws.
4. Turn balance wheel toward you until tip of rotary
hook meets the right side of needle swung down
to the right.
5. While holding rotary hook in position, turn balance
wheel toward you until needle comes at its lowest
point. Then turn balance wheel continuously
toward you in order to raise needle point 3.25 to
3.55 mm from its lowest position.
6. Tighten 2 pcs. of screws.
7. Refit circuit cover and put the machine back to its
upright position, then refit bobbin holder and needle
plate.
- 38 —
EASIER ADJUSTMENT OF HOOK TIMING
Machine setting
| Pattern indicator
Pattern - 10 frame CHECKING CONDITION
Use hook timing gauge.
* Select pattern 10 in Mode I.
* Use No. 14 needle.
Wiring circuit
case cover
Needle TO ADJUST
plate Hook timing
gauge 1. Remove needle plate and bobbin holder.
Bobbin 2. Tilt the machine until it rests on flat table.
holder —
3. Turn balance wheel toward you until needle comes
| near its lowest point but should not pass through
Shuttle the point.
body
A 4. Set gauge by pressing it to rotary hook.
— Set screw
5. Remove circuit cover and loosen screws.
6. In condition that left portion of hook timing
gauge butts against needle, turn balance wheel
Butt it to toward you slowly until tip of rotary hook meets
the needle the right side of hook timing gauge.
7. While holding rotary hook in position, turn
Push it to balance wheel toward you in order to position
Needle No. 14 the shuttle Needle No. 14 needle at its lowest point.
body corner Lowest needle position
8. Tighten screws. Then refit circuit cover.
9. Put the machine back to its upright position.
Then refit bobbin holder and needle plate.
, Hook timing guage Hook timing guage
— 39 —
TO ADJUST CLEARANCE BETWEEN NEEDLE AND RATARY HOOK
Zigzag width dial
(Zigzag width "0")\_
Set
screw
Set screw
C = board
circuit case
OT 05mm
1 =
(0) Master needle
Shuttle race unit
Machine setting
Zigzag width dial
Zigzag width
"7
EN Tip of shuttle hook
Feed mechanism |
—
р т [ит |
- : —
Jo PGO ed
| oo O
aa / №
/mm spanner
Hexagon bolt for
feed mechanism unit
7mm box driver
CORRECT SETTING
The standard clearance between needle and hook should
be minus (-) 0.1 to plus (+) 0.05 mm at each needle
position.
CHECKING CONDITION
+ Select pattern 13 in Mode I.
« Use master needle.
TO ADJUST
1. Remove extension table (accessory box), needle
plate, rotary hook and bed cover. (See p. 56)
2. Remove circuit cover. Loosen 2 pcs. of screws
and move C board circuit case to the left.
3. Switch on the power and select pattern 13 in Mode I.
4. Push manual stitch width knob and turn it to "O".
5. Turn balance wheel toward you until needle comes to
the center of needle hole on needle plate.
6. Loosen 4 pcs. of bolts.
7. Attach one piece of screw to "A" portion.
8. Turn screw in order to raise or lower feed
mechanism and adjust the clearance between needle
and hook in range of minus (-) 0.1 to plus (+)
0.05 mm.
9. Attach 4 pcs. of bolts.
10. Turn manual stitch width knob to "7" and turn
balance wheel to make sure the clearance between
needle and hook should be minus (-) 0.1 to plus (+)
0.05 mm at each needle position.
11. Loosen one piece of screw from "A" portion.
12. Refit C board circuit case, circuit cover and bed
cover taking care not to scratch flexible cords.
(See p. 56)
13. Refit bobbin holder and needle plate.
14. Replace master needle with ordinary sewing needle.
15. Refit extension table (accessory box).
- 40 —
T0 ADJUST FEED DOG HEIGHT
Machine setting
Pressure dial
Power switch
OFF
Set screw
Feed lifting
adjusting roller
shaft
Base unit
Y 3.446 90015098
Turn the screw driver clockwise,
Adjust the feed dog height when feed dog
rises above the needle plate surface
CORRECT SETTING:
Set the pressure dial at "3" and lower the presser foot.
Turn the balance wheel toward you to raise the feed dog
to its highest point. At this point, standard height
of feed dog must be 0.75 to 0.85 mm above the needle
plate.
CHECKING CONDITION: Set the pressure dial at "3"
stitch length regulator dial at 4. Unplug the machine
from power supply.
TO ADJUST:
1. Remove the bed cover. (See p. 56)
2. Open the top cover.
3. Lower the presser foot and make sure the feed dog
is set at highest point. Tilt the machine
until it rests on flat table.
4. Insert the hexagon screw driver from left hand
side of working hole of the bed cover. Loosen the
feed lifting cam shaft set screw as illustrated in
the figure.
5. Insert the negative driver through the hole on
bracket and turn the feed lifting cam shaft.
1) If feed dog height is higher than standard,
turn the screw driver to the left and lower the
feed dogs slightly. Then, turn to the right for
adjustment. (A)
2) If feed dog height is lower than standard, turn
the screw driver to the right. (В)
IMPORTANT
Adjustment should be done when the feed dog is coming
upward by turning the feed lifting cam shaft to the
right.
6. Tighten feed lifting roller shaft set screw.
7. Fix the bed cover and close the top cover.
— 41
ТО ADJUST TIMING OF LATERAL NEEDLE SWING
Machine setting
| Pattern -—--= 13
Presser foot
holder
Needle No. 14
Checking point X |
of needle swing a 8.5 + 0.6mm
— Y
AAA AT SSL) sd As
N Needle plate
Arm shaft shielded plate
Set screw
B > | |
ce
| Arm shaft sensor
noi
x
Arm shaft shielded plate
should not touch the arm
shaft sensor
CORRECT SETTING:
When the needle starts to move in a horizontal direction
the hight of the needle above the surface of needle
plate should be in the range of 7.9 mm to 9.1 mm
(5/16" to 23/64").
TO ADJUST:
1) Remove top cover (See p. 53)
2) Plug the machine into power supply and turn on
power switch, then select the pattern 13 in Mode I.
3) Turn balance wheel slowly toward you and stop it
when needle just starts moving horizontally.
i) When needle point is higher than 9.1 mm
(23/64") from the surface of needle plate,
loosen screw and move upper shaft shield
plate unit in the direction of "A".
ii) When needle point is lower than 7.9 mm
(5/16") from the surface of needle plate,
loosen screw and move upper shaft shield
plate unit in the direction of "B".
4) Tighten upper shaft shield plate set screw.
The clearance between upper shaft sensor unit and
upper shaft shield plate unit should be within
(1 mm). They should not touch each other.
(as shown in the diagram.)
Easier checking:
Lift the presser bar lifter. Height between
needle plate and the lowest part of foot holder
should be 8.5 mm.
5) Fix top cover unit (See p. 53)
Use No. 14 needle
Turn the balance wheel toward you when you
adjust timing.
3. Fix the top cover, then check the height
8.5 mm of presser foot holder.
NOTE: 1.
= 4) —
ТО ADJUST UPPER THREAD TENSION
Cotton thread #50
Thread tension €?
dial Y
y
©;
Thread tension
dial (unit)
Snap eg
Machine setting
rene tension dial "4"
7
SR 7 Thread tension
\ dial at "4"
7
ZN
Thread tension dial
Pull out to
Thread tension the left
dial
Setting
position
Thread tension díal
CORRECT SETTING
When thread tension dial is set at "4", the thread
should pass through check spring holder with tension of
65 to 95 g.
CHECKING CONDITION
* Use 50 mercerised cotton thread.
* Set thread tension dial at "4".
° Pull the thread up vertically at check spring
holder.
TO ADJUST
1. Draw the thread down into thread tension dial,
then around check spring holder, with tension
dial at "a",
2. Remove face plate and lower presser foot. (See p. 54)
3. Remove snap ring.
4. While pulling tension dial away from the machine as
far as it will go, shift the fitting position of
convex against concave portion with a slight swivel-
ling movement.
i) If thread tension is too tight, turn dial
clockwise (in the direction of "A").
ii) If thread tension is too loose, turn dial
counter-clockwise (in the direction of "B").
5. Refit snap ring.
6. Refit face plate. (See p. 54)
— 43 -
TO ADJUST AUTOMATIC THREAD TENSION RELEASE MECHANISM
Machine setting
Direction of
Thread tension dial "0" 42
| Thread tension dial "o"
A ‘Thread tension
N\releasing plate(2)
Thread tension
releasing plate(3) an arrow
E of
Thread tension
dial
Thread tension
Thread tension releasing
releasing plate (2)
plate set screw
Thread tension Thickness gauge
releasing plate(1) |
Releasing
rod Thread tension dial
Thread tension
Presser bar releasing plate (3)
lifter
When presser bar is raised and thread tension dial
knob is set at "0", the thread tension releasing
plate (3) should move 0.5 mm to the left side.
1. Raise the presser bar and remove the face plate.
Loosen set screw of thread releasing plate.
2
3. Set the tension dial at "O".
4
Insert the thickness gauge (0.6 mm) between
tension disk and the thread separation plate.
Then, turn the thread tension dial from "0" to
"gh .
Lan
6. Butt the thread releasing plate (1) to (3) and
(2) to thread releasing rod and tighten thread
tension releasing plate set screw.
NOTE: Butt thread releasing plates (1) and (2) to
the direction of the arrow as illustrated in
the figure.
7. Take out thickness gauge.
Make sure the thread releasing mechanism is cor-
rectly adjusted.
NOTE: Thread tension dial should be turned smoothly.
8. Fix face plate unit.
- 44 -
TO ADJUST MICRO-SWITCH FOR BOBBIN WINDER
glide the switch adjusting
plate to direction of the arrow
Set screw
Switch adjusting
plate
Switch position "ON"
Clearance
should be
0.5mm UN
Bobbin winder unit
Sewing position
Micro switch
$
Bobbin winder 7
unit is set at
sewing position
Micro switch roller
Micro switch should not
touch the ARM( machine)
CORRECT CONDITION
When bobbin winder spindle is set at original position
micro switch of bobbin winder should be set at "ON"
and when bobbin winder spindle is set at bobbin winding
position micro switch should be set at "OFF",
TO ADJUST
1. Remove the top cover.
2. Set the bobbin winder spindle at original sewing
position.
3. Loosen set screw of switch adjusting plats znd
make it loose.
4. Shift the switch adjusting plate to touch the
roller of micro-switch. Push it along tre groove.
When there is click sound it is the position of
"ON". In order to get some allowance pus” the
switch adjusting plate about 0.5 mm and zizhten
the screw. (make sure micro-switch lever should
not touch the micro switch body.)
5. Bobbin winder spindle is still set at the original
position. Switch on power and turn the balance
wheel one turn counterclockwise. Make sure
machine indicates pattern No. 10 and needle bar
1s automatically set at left needle position.
6. Power switch "OFF". Fix the top cover.
— 45
TO ADJUST MOTOR BELT TENSION
CORRECT SETTING
When motor belt is pushed taut by your finger, the
clearance between belt and screw should be 1 to 2 mm.
y
DN Motor set screw
CHECKING CONDITION
* Push belt by your finger until it becomes taut.
Motor set screw TO ADJUST
— 1. Remove belt cover. (See p. 55)
2. Loosen 2 pcs. of set screws.
Mot Ехо 1 3. Move motor set plate downward to adjust the
LN or fixing p.ate clearance between belt and screw 1 to 2 mm when
belt is pushed taut by your finger.
4. In the above mentioned condition, tighten screws.
1 - 2mm
5. Refit belt cover. (See p. 55)
Stud screw
- 46 -
TO ADJUST SUPER
STITCH FEED MECHANISM
Machine setting
f N
Feed adjusting
TT screw
+ A —
Pattern 41 in Mode III
Less than
0.5 mm
0.5 -2.5 mm
Standard stitches
O
Screw driver
More than
2.5 mm
pr T8
ANF ETT SR me inl awe wm йе
„^^ + С e ое = — aT NN
m - .
- © mt 1 Leu I
NE = m 7 fr
TT Le A „
(IT)
Feed adjusting
pin
CORRECT SETTING:
When pattern number 41 is set in Mode III the space
between two lines in the center of crocodile pattern
should be 0.5 to 2.5 mm as illustrated in the figure.
SETTING CONDITION:
Make sure that the setting mark of feed balance dial at
left side of bed is set at standard position.
TO ADJUST:
1.
2.
3.
Remove belt cover. (See p. 55)
Fix F foot.
Power switch "ON".
41.
Set mode key "III", pattern
Check the sewing patterns.
Power switch "OFF".
Loosen feed arm plate set screw and turn the feed
adjusting pin (Do not turn more than 90 degrees
either clockwise or counter-clockwise)
1) If pattern is (i) (pattern is compressed)
turn the pin to "B" direction
counter-clockwise.
т т [= о от ово. о% %#
2) If pattern is (ii) (pattern is drawn out)
2000000 turn the pin to "A" direction
clockwise.
Tighten feed arm plate set screw.
Power switch "ON".
(crocodile)
Select pattern 41 in Mode IIT.
Check the pattern 41. Make sure the space between
two lines in the center of crocodile is between
0.5 to 2.5 mm. If not, make adjustment from
No. 2.
— 47 —
TO CHANGE DRIVE MOTOR
1. Remove the belt cover. (See p. 55)
2. Pull out the connector and take it out, then,
remove the two set screws.
3. Remove the motor belt. Pull out the drive motor
Motor set screw
from the machine.
Motor 4. Exchange the motor.
5. Place the motor on the motor cushion in the
machine, then tighten two set screws temporarily.
NOTE: 1) Make sure motor cushion should not be bent
before fixing the motor.
2) Lamp cord should be placed between motor
side and arm side.
MM Motor pulley
6. Fix the motor belt on motor pulley and upper shaft
belt gear.
Motor set screw 7. Adjust the tension of motor belt. (See p. 46)
Connector 8. Joint the connector and insert to the cord guide.
Cord guide 9. Fix the belt cover. (See p. 55)
Lamp cord _
Motor cushion
- 43 —
TO EXCHANGE THE CHECK SPRING
Machine setting
Pressure A
i
В
dial "1" 5 OY
A
NN
Thread tension
holder plate
Threader
supporter plate
Lamp socket unit
2 |
D
EX
“a
Threader UE
supporter plate LL} / 19 |
— HU Move the tureader
7 supporter plate
to the left,
Hinged screw (about 5 mm)
\
Check spring т
Make sure this
projection should
not come off from
grooves,
TO TAKE OUT
Set pressure dial at "I".
l. Remove top cover unit, face plate unit and sewing
light bulb.
Г
Loosen set screw of thread tension holding plate, and
remove the thread tension holding plate from needle
threader supporter plate.
3. Take out a lower side screw from needle threader
supporter plate and loosen upper side screw then
shift the needle plate supporter plate to the left.
4. Loosen two set screws of thread tension unit.
Take out thread tension unit.
5. Take out hinged screw and check spring.
TO FIX
6. Fix check spring as shown in the diagram by
tightening hinge screw.
7. Fix the thread tension unit with two screws to
the machine.
8. Fix the needle threader supporter plate with two
screws.
9. Tighten thread tension holding plate with screw
to the needle threader supporter plate.
10. Fix lamp, face plate and top cover unit.
See p. 53, p. 54.
- 49 m
TO CHANGE NEEDLE THREADER
Position
setting
plate
——
Threader supporter
" Threader supporter spring
E-ring
+
+
/ &
- vii E
Threader
supporter
: Spring
|
+ as ВЫ F—
La
Detach the face plate. Remove the bulb.
Lift up the needle threader.
Remove the E-ring.
Detach the threader supporter. (Be careful that the
threader supporter spring might not jump out.)
Attach the new threader supporter and fix it with the
E-ring.
Place the threader supporter spring between the hole of
the threader supporter and the convex of the thread
supporter arm.
Check if the threader supporter moves smoothly.
Adjust the function of the needle threader according to
the instruction of NEEDLE THREADER.
Attach the bulb and the face plate.
- 50 -
Blue tipped needle
7
/
/
/
/
Pin hits the lower
edge of the needle
hole slightly
Threader
NEEDLE THREADER 1/2
supporter
a
,
In case the pin of the threader hits needle,
follows;
1. Attach the blue-tipped needle.
2. Turn the balance wheel counter-clockwise
the needle comes to its highest point.
3. Pull down the threader in order that the
setting plate touches the roll pin.
4. Pull out the threader as the illustrated
Insert the new threader.
adjust as
until
position
fig.
- 51
NEEDLE THREADER 2/2
In case the hook of the threader does not catch the thread,
make adjustment as follows:
1, Use the blue-tipped needle and the embroidery thread#50.
2. Adjustment A.
Loosen the screw (a). Make adjustment as shown in the
diagram (A).
Part A ( Magnified) 3. Adjustment B.
TT Bend the tip of the hook to make adjustment as shown ín
the diagram (B).
f nce between
or “enter of the 4, After adjustment, check if adjustment is made correctly.
pin and the center |
of the hook should Pin
be less than 0.2mm.
Clearance should be
0.1-0.5 mm
Le
View from B View from C
= 52 —
TO CHANGE TOP COVER
+ - binding head
small screw 4 x 8
mere tt
Foot storage D, TO REMOVE
plate
< — Before taking out, make sure power switch is "OFF".
A pressure dial Top cover
= E UT _ unit
1. Open the top cover, loosen + - binding head small
screw (left) then loosen right hand side screw.
clearance |
2. Take out top cover as illustrated in the figure.
Pattern Handle
indicator |
frame TO FIX
Top cover
| a 3. Slant the top cover as illustrated in the figure.
A projection of front left side should be inserted
under the face plate, then lower the right hand
side of top cover.
и
Set screw
4. If position of top cover is adjusted tighten left
side set screw, and then right side screw.
Close the top cover.
NOTE: 1) The clearance between top cover and pattern
indicator, that between top cover plate and
*arm, that between foot storage plate and
pattern indicator should not be large.
Top cover unit
Projection of
foot storage plate op cover
T
2) Top cover should not hit the handle when it
Arm is closed.
|| 3) Bobbin winder spindle should not touch foot
Clearance
storage plate.
Face | зе Р
plate 4)
Face plate and top cover should not touch
late EI
E Clearance (clearance should be even).
5) Clearance between foot storage plate and
Pattern | Foot storage pressure dial should be even.
indicator / plate и
frame / | TT 6) Make sure power switch is "OFF".
Pressure,
Foot storage dial /
/ plate Clearance
= 53 —
TO CHANGE FACE PLATE
Face plate Top cover
TTT TO REMOVE
+ - binding head small
screw 3 x 16 1. Make sure power switch is "OFF" before removing
N face plate.
Face plate N | Open the face plate cover and remove the sewing
cover ` hem ; light bulb.
Gap 2. Loosen lower set screw (+ - binding small screw
Gap 3 x 6), then loosen and remove the upper set
screw (3 x 16).
Face plate
fixing plate
Face plate
fixing plate
+ — binding
head small
screw 3 x 6
- binding head
ua screw 3 X 6
3. Shift the face plate upward.
TO FIX
4. Set the groove of the face plate fixing plate to
the set screw (3 x 6) and tighten with screw
(3 x 16) temporarily.
5. Tighten two set screws after face plate position
is adjusted.
6. Fix the bulb and close the face plate cover.
NOTE: 1) Clearance of face plate between top cover
and arm should be even.
2) Face plate should not touch the tension
unit.
- 54 —
TO CHANGE BELT COVER
clearance
Balance
wheel dle
Pattern indicator frame I.
: Ar TO TAKE OUT
clearance Drop Back side
sees of Arm 1. Raise the handle. Loosen TP set screw 3 x В.
Power plug socket lal (Do not take out)
Base | + 2. Insert the hexagon screw driver (2.5 mm) from the
clearance 7 DAN | right side of top hole of motor exhaust and loosen
Го h O lt.
clearance 3. Loosen * binding head small screw 4 X 8 at center
Pattern
indicator
of drop dial and pull out the belt cover toward
you.
frame \ TO FIX
@ 4. Set the projection on left side of the belt cover
UU to groove of the stitch pattern indicator frame.
=m 5. The fixing position of top side and bottom side
=~. :
= of the belt cover should be set at each TP 3 x 8,
= > 4 x 8 set screw.
dl Secrew driver 6. When belt cover is positioned correctly, insert
| J) = the hexagon screw driver from the right side of
top hole of motor exhaust and tighten hexagon
Exhaust holes bolt and TP screw 3 X 8, screw 4 x 8.
Power plug NOTE: 1) Clearance between belt cover arm, socket,
socket foot storage plate, base, and pattern
indicator frame is even.
Balance
wheel 2) Clearance between belt cover and drop dial
is even.
Drop feed |
3) Clearance between belt cover and balance
dial
wheel is even.
0
EN Base unit
- 56 —
TO CHANGE BED COVER
Extension table
Bed cover
Operation holes
of Base unit
Groove
+ - binding head
small screw 3 x 6
Bed cover /
Gap
Arm
TO REMOVE
Before removing the bed cover, make sure power switch
is "OFF".
1. Slide the accessory box unit to the left side.
2. Insert the screw driver into the operation hole
of the base unit. and loosen two set screws.
3. Remove the bed cover to the left side.
TO FIX
4. Insert the bed cover from left side, and adjust
the groove of the bed cover to the bed as
illustrated in the figure.
5. Insert the screw driver into the operation hole
and tighten the two set screws.
6. Slide the accessory box unit from left to right.
NOTE: 1) Clearance between bed cover and arm should
be even.
2) Shift the bed cover to the side of accessory
box if the accessory box is not stable.
- 55 —-
DRAWING OF THE CONNECTORS WIRING
This Memory Craft (Sewing Machine) has 14 different connecting points.
because the machine will become out of order if there is any disconnected point.
Full attention is necessitated
Make sure all of connectors
are connected correctly when replacing the electronic and electrical parts (A,B,C,F,board, Arm shaft sensor
and drive motor).
(Wires should not be pinched with parts.)
Stepping motor
for zigzag width
К Боага д
C board
connector
A board
Arm shaft
sensor
A board
Drive motor
F board
connector
Transformer
Stepping motor for
stitch length
C board
{
|. shaft sensor
Connector B
Secondary circuit
To stepping motor
for stitch length
To stepping motor
for zigzag width
Connector of
stepping motor
for zigzag width To secondary circuit
of transformer
Motor
connector
Connector of
stepping motor
for stitch length
| _ To Power plug socket
RL — Transformer
“Drive motor \ connector B
| HD To C board
A board BC board а
connector connect ng cor
To A board
Power plug socket
Power plug socket
connector B
Motor 100V
>
Connector
(Comes or
Stepping motor
for stitch length
Stepping motor
for zigzag width
Connector A
Primary circuit
7
Connector B Connector Á
Transformer Power Plug socket
To primary circuit
To lamp of transformer
\
То В board“
Power plug socket
/
To drive motor
B,C board A
connecting 2 C board
cord line) connector
Power plug socket
connector A
a a
E
transformer Sg ———
connector A /u
C board
DRAWING OF THE CONNECTORS WIRING
F board
| |
Stepping motor for zigzag width |
Abram tt ri + rm bea
|
A board
Plug holder
B board
C board
Each cord should be located as shown above.
Space between cords should be as big as possible.
TO CHECK TRANFORMER
B board(printed wiring circuit board)
Wiring circuit case cover
If
1)
2)
Base unit
+- binding head small
+ pan head tap tight screw 4x10
Screw
TO PULL OUT THE TRANSFORMER CONNECTOR
Unplug the machine from power supply.
Remove the wire circuit case cover
(Loosen 3 set screws).
Remove C board
(Loosen 2 set screws).
Remove C board wiring circuit case
(Loosen 3 set screws).
Pull out the transformer connector
C board.
Remove B board from Base unit
(Loosen 4 set screws).
Pull out the transformer connector
B board.
(A) from
(B) from
- BO -
TO CHECK TRANSFORMER
Transformer cord A
rimary circuit
E y 7) Measure the insulation resistance between terminals
on connector A with electrical tester.
100 V specification: the reading should be about
10 ohms.
200 V specification: the reading should be about
55 ohms.
8) Measure each of the insulation resistance between
terminals of "BLUE" wires and also between "PURPLE"
wires on connector B with electrical tester.
Each reading should be about 1 ohm.
If needle of electrical tester does not swing, change
the transformer. (due to broken input winding coil).
Transformer cord (B) >
Secondary circuit
Blue colour cord
- 60 —-
TO CHECK TRANSFORMER
B board(printed wiring circuit board)
Wiring circuit case cover
©
AFT
X 4 -
N |
Ге)
|
—
Base unit
+ pan head tap tight screw 4x10
/ +- binding head small screw
TO FIX THE TRANSFORMER CONNECTORS
9)
10)
11)
12)
13)
14)
Insert the transformer connector (B) to B board.
Fix B board on the base unit
(Tighten 4 set screws).
Insert the transformer connector (A) to C board.
Fix C board wiring circuit case
(Tighten 3 set screws).
Fix C board (Tighten 2 set screws).
Fix the wiring circuit case cover
(Tighten 3 set screws).
- 61 -
TO CHECK FOOT CONTROL
Before pressing the foot control
Machine plug(5 pins plug)
After foot control is pressed
5 A
©
J
(OZ
Tester (10 Ohm)
Unplug the machine from power supply.
Remove foot control plug from the machine.
Touch slightly two connecting terminals with fingers
of electrical tester, as shown in the diagram and
measure the insulation resistance of foot control,
of which reading should be varied in the range of
950 Ohms to 10 Ohms when pressing fully and releas-
ing foot control pedal.
Tf needle of electrical tester does not swing,
change foot controller unit.
NOTE: Do not insert strongly the finger of
electrical tester into the terminals of
foot controller plug in order to prevent
a damage of terminals.
= 62 —
TO CHECK MAIN DRIVE MOTOR (for 100-125 Y)
Black colour Blue colour
}
Ne
7 Mi-—__ Red colour
3
connector
©
о <
Tester (Range of 1 Ohm)
White colour
TARTS
РИА, ити и Pe NA
|A]
„=
2)
Unplug the machine from power supply.
Unplug connectors.
NOTE: Color of lead wires; Connector: red, blue,
black and white.
Remove the motor connector.
Measure the insulation resistance between both
terminals of "RED" and "BLUE" wires with electri-
cal tester, of which reading should be about 10
Ohms. If needle of electrical tester does not
swing, change main drive motor (due to the
broken armature coils or thermal cutoff fuse).
Measure the insulation resistance between both
terminals of "WHITE" and "BLACK" wires by the same
way as mentioned above, of which reading should
be in the range of about 15 to 20 Ohms.
If needle of electrical tester does not swing,
change main drive motor (due to broken armature
coils).
If needle of electrical tester does not swing,
change main drive motor (due to the broken
armature coils or thermal cutoff fuse).
- 63 —
TO
CHECK MAIN DRIVE MOTOR (for 200-240 V)
2.
3.
Tester ( Range of 1 Ohm)
1.
Tester (Range of 1 Ohm)
2)
Unplug the machine from power supply.
Measure the insulation resistance between both
terminals of "RED" and "BLUE" wires with electical
tester, of which reading should be about 50 Ohms.
Tf needle of electrical tester does not swing,
change main drive motor (due to the broken
armature coils or thermal cutoff fuse).
Measure the insulation resistance between both
terminals of "WHITE" and "BLACK" wires by the same
way as mentioned above, of which reading should be
about 60 Ohms.
Tf needle of electrical tester does not swing,
change main drive motor (due to broken armature
coils).
- 64 —
REPLACEMENT OF THE FUSE (2.5 A) ON C BOARD
C board
Fuse holder
TO TAKE OUT
1) Unplug the machine from power supply.
2) Remove C board and pull out C board wiring circuit
case.
3) Remove the fuse (2.5 A) from C board.
NOTE: To take out the fuse, Make sure the screw driver
should be inserted from the side as illustrated.
TO FIX
1) Fix the new fuse (2.5 A).
NOTE: Take out the connector in case the glass of the
fuse is broken.
2) Fix C board wiring case and C board.
- 65 -
REPLACEMENT OF THE FUSE (1.6A, 2.5A) ON B BOARD
Fuse (2.5A)
NOTE: Unplug the machine from power supply and leave
it about a few minutes then replace the fuse on
B board.
TO TAKE OUT
1) Remove the B board from the base unit and pull out
the transformer connector.
2) Pull out the fuse (1.6 A, 2.5 A) from B board.
NOTE: To take out the fuse the screw driver should be
inserted from the side as shown.
TO FIX
3) Replace the new fuse.
NOTE: Take out the connector in case the glass of the
fuse is broken.
4) Insert the transformer connector and fix B board.
- 66 ~
REPLACEMENT OF A BOARD
Connector
F board (printed wiring circuit board)
Connector
Arm shaft sensor
To take out the connector
Connector post
+ tm
Drawing of the connector position
TO TAKE OUT
1) Remove the top cover unit.
2) Remove the belt cover.
3) Remove the bed cover.
4) Pull out connectors of F board
(unit) and upper
shaft sensor (unit).
NOTE: When taking out the connectors, do not pull the
lead cords.
- 67 -
Drawing of screw
positions
Set screw
Drawing of
the connector position
Open the both sides of the lock
and pull out the connector.
Drawing of
screw positions
screw
5)
6)
Loosen 5 set screws.
Remove A board connector.
- 68 —
Drawing
To take out the pattern indicator
Г / | ==>
Pull out to the
right side
AZ
A board connector
Drawing of screw position
+ pan head tap tight
screw 3x8(B) _
Rear fixing plate
+ pan head tap tight И
N Set screws
: | LL
Y
Volume cap
screw 3x10(B)
7) Move the pattern indicator frame unit to the right
side and pull out.
NOTE: When pulling out the pattern indicator frame
unit, be careful not to catch other lead cords
with A board connector.
8) Loosen 2 set screws, then remove the volume cap.
9) Loosen 2 set screws, then remove the rear fixing
plate.
10) Loosen 5 set screws.
- 69 -
To take out the A board
Fixing
plate _—
a rt cm a tm
A board
11) Remove the A board.
NOTE :
Fixing plate can be taken out together when
removing the A board from the machine.
The pattern indicator frame unit should be
turned over.
70 -
Hole of the slide cam
Projection of the slide switch
Pattern indicator frame
F i X i IT g р 1 ate w
“A board
To fix the fixing plate
Pattern indicator frame
La
A board unit
N {+
>
fixing A board
TO FIX A BOARD
12) Replace A board and insert the projection of the
slide switch on the A board to the hole of the
slide cam on the pattern indicator frame.
Set A board on the pattern indicator frame.
NOTE: The movable pieces (right and left) should be
fixed properly, then fix the A board.
13) Insert the fixing plate in the space between the
pattern indicator frame and the A board.
- 71
=
screw 3x8
+ pan head tap „”
tight screw 3x10
Nylon washer (5) —
Slightly fold
the end of the
flexible cord
NU
\
|
pun,
|
A board unit
\
Volume cap
+ pan head tap tight
screw 3x10(B)
Slide button
Slide plate
R
a
To bend the flexible band
ise the flexible cords
To check the slide function
14) Fix A board with 5 set screws.
NOTE: After fixing A board, move the slide button to
left and right. Check if the projection of the
slide switch is moving together and the slide
plate can change the position or not.
Do not lose the nylon washers (5).
15) Fix the volume cap with 2 set screws.
16) Tighten 2 set screws to fix the rear fixing plate
and then bend the lead cord.
- 72 —
fre a
Arm hole
Pattern
indicator frame
\
\
US
Cord guide Ko
Vo
\
Pull out further
Connection of the
A board connector
(om
17)
18)
Insert A board connector to the arm hole and pass
under the flexible cord guide and pull it out to
the left.
Connect A board connector to the connector post.
- 73 -
Thread shielded plate Butt it to the Arm
A пет ее еее ©
<+—— Front fixing plate
|
A board
; flexible cord
Butt it to the Arm
Butt the pattern indicator
to the Arm
Thread shielded plate
a
(|
: Я
an BAAR
na =
rm m = “о
ques
19) Insert the front fixing plate under the thread
shield plate. Setting the hole of the pattern
indication frame unit into the projections (3 pcs)
of the arm, fix the pattern indicator frame unit
on the arm.
NOTE: When fixing the pattern indicator frame on the
Arm, make sure there 1s no space between pattern
indicator frame and arm.
20) Make sure the thread shield plate is fixed
properly and fix the pattern indicator frame with
screw.
NOTE: The thread shield plate and thread take-up lever
should not touch.
74 =
Drawing of
screw position
+- binding head
small screw 4x8
+- binding head small screw 3x5
+- binding head
small screw 4x8
Clearance
Drawing of
screw position
Belt cover
21) Pushing the pattern indicator frame to the Arm,
tighten set screw.
NOTE: Do not push pattern indicator frame too strongly.
22) Also tighten 3 set screws at rear side of the
pattern indicator frame temporarily.
23) Make sure there is no space between belt cover and
pattern indicator frame. Tighten 3 set screws.
- 75 —
Connector
(Arm shaft sensor)
Connector
Drawing of
connector position
(F board)
Connector post
Insert the flexible
cord correctly.
<a
Red colour
Black
colour
24) Joint the connectors of F board and upper shaft
sensor.
25) Shift the bobbin winder spindle from left to right,
and check if the bobbin winder micro-switch works
properiy.
26) Fix the belt cover.
27) Fix the top cover.
28) Fix the bed cover.
NOTE: Insert the connectors correctiy.
= 76 -
REPLACEMENT OF B BOARD
TO REMOVE
1) Unplug the machine from power supply.
2) Loosen B board set screws.
NOTE: The condensor has natural electrical discharge.
B board set screw
+ pan head tap tight
screw 4x10
i
_
LE
В
B board set screw
+ pan head tap tight screw 4x10
Leave it a few minutes.
- TT] «A
B board
insulated paper
3) Remove the B board from the base unit.
(It is somewhat difficult to remove because silicone
grease is spreaded on osculating surface between
base and B board).
4) Set the B board horizontally as illustrated in the
figure.
NOTE: Do not take out the insulated paper on the B
board.
- 78 —
Connector of stepping motor for
zigzag width(Blue color, 7 pins)
Connector of stepping motor
for feed mechanism
A board connector
( Gray ribbon cord )
Housing lock
A board connector Transformer connector
Transformer connector
( White color, 4 pins
)
Plug socket
connector
~3 pins )
Connector of feed
mechanism, zigzag
width motor
( Blue color,
5) Open the housing locks to pull out A board connector.
6) Pull out the stepping motor (for zigzag width)
connector (blue colour, 7 pins) and stepping motor
(for feed mechanism) connector (for white colour,
7 pins).
NOTE: Do not pull the cords.
7) Pull out the plug holder connector (blue colour,
3 pins) and the connector of B, C board
(white colour, 3 pins).
8) Pull out the transformer connector (white colour,
4 pins).
NOTE: Do not touch the diode or fuse when pulling out
the connectors.
9) Replace B board. (B board should be held with the
elastic band after the replacement to keep the
insulated paper).
- 79 -
10) Spread the silicone grease on the radiator plate of
new B board as illustrated in the figure.
Spread the silicone grease on the plate.
X
RL SG tan et
VEE wks e ap ws og 4.
STE EE a
a -
Eo 2
15) Set B board on the base unit, and tighten 4 set
screws.
NOTE: The flexible cord of A board connector and plug
holder cord should not touch.
NOTE: Each B, C board connecting cord, transformer
B board set screw cord and lamp cord should not touch.
( + pan head tap tight screw 4x10)
— 0
Г
B board set screw
( + pan head tap tight screw 4x10)
- 82 —
Connector of stepping motor for zigzag
width ( Yellow, Orange,Brown, Red, Blue,
Black, White colors from this side )
Connector of stepping motor = |
for feed mechanism a |
( Yellow, Orange, Brown, Red, Blue, |
Black, White colors from this side
A board connector
(This side with cord mark
should be.set aside)
Cord mark
ni
E
“а о
Transformer
connector
A board connector
Transformer connector
( White color, 4 pins)
B,C cord connector
( White color, 3 pins )
( Black, Orange,
~ White colors from
this side )
lug switch connector
P
( Blue color, 3 pins )
( Orange, Gray, Yellow
cords from this side )
Stepping
motor connector
(Each Connector is not Reversible)
11) Insert A board connector (gray, flexible band).
12) Insert the transformer connector (white, 4 pins).
13) Plug the connector of the B, C board connecting
cord (white colour, 3 pins) and plug holder
connector (blue colour, 3 pins).
14) Plug the stepping motor (for zigzag width)
connector (blue colour, 7 pins) and the stepping
motor (for feed mechanism) connector (white
colour, 7 pins).
81
Printed wiring circuit case cover
+- binding head small screw 4x3
Q
Wiring circuit
case cover
Printed wiring circuit
case cover set screw
+- binding head small
screw 4x8
5)
6)
Loosen set screws of wiring circuit case cover.
Remove the wiring circuit case cover.
- 84 -
REPLACEMENT OF C BOARD
TO REMOVE
1) Remove the belt cover.
2) Pull out the motor connector and C board connector
from the cord guide and then remove the C board
connector.
NOTE: For the specification of 200 V, it is necessary
to take out the motor.
3) Loosen the cord guide set screws and shift the
cord guide to the direction of arrow as illustrated
in the figure.
4) Take C board cord out of the machine.
Cord guide
Motor connector
ee rires
— Cord guide
sn
ON С board connector
C board cord
— 83 -
C board set screws
+ binding head small
screw 4x10
7) Loosen the C board set screws.
8) Pull out C board and remove the set screws of C board
C board wiring circuit
case set screw
C board wiring circuit
case
wiring circuit case cover.
9) Remove C board wiring circuit case cover.
NOTE: C board wiring circuit case cover can be used
after C board is replaced.
- 85 —
Transformer connector
Plug holder connector
lamp cord connector
Transformer
connector
Lamp cord connector
10) and pull it out.
NOTE:
Grasp the lamp cord connector,
Do not bend the fasten tabs.
11) Pull out the transformer connector.
12) Pull out the plug holder cord the same way as No. 11.
Do not pull the cord when pulling out the
connector.
NOTE:
= 86 —
B,C,
board connecting cord
N
—,
AS
| IE]
C board cord
13) Move C board cord from rear side
of the machine.
14)
cord.
NOTE: Do not puli the cord.
pull out the connector.
15) Replace C board.
to the bottom side
Remove the connector of the B, € board connecting
Use the screw driver to
87 -
TO FIX C BOARD
< 16) Pass the C board cord from bottom side of the
C board cord
base to rear side of the machine.
17) Plug the connector (white colour) of the B, C board
connecting cord to the C board (connector is not
reversible).
NOTE: Insert the tab of the connector post to the
groove of the connector correctly.
B,C board connecting cord
- 88 -
Transformer
connector
(Red color)
Lamp cord
connector
Transformer
connector
(Red color)
Connector post
(White color)
Connector post (red)
Lamp cord connector
Insert the plug
Plug holder
connector (white)
18) Grasp the neck part of lamp cord connector with
radio pliers and insert the connector.
NOTE: Do not bend the fasten tabs.
Insert the connector correctly and the fasten
tab should not enter the space between connector
and sleeve.
19) Insert the transfomrer connector (red colour) to
the connector post (red colour).
NOTE: The projection on the connector should face
this side.
20) Insert the plug holder connector (white colour)
to the connector post (white colour ) as same
way as No. 19.
NOTE: The projection on the connector should face
this side.
- 89 —
Transformer cord
Lamp cord
Plug holder cord À
Set screw
C board wiring
circuit case
\ Lamp cord
21) Accomodate the lamp cord,
holder cord (A)
circuit case.
transformer cord, plug
to the groove of the C board wiring
22) Fix C board wiring circuit case unit and tighten
set screws (3).
NOTE: Lamp cord should be fixed at groove of the cord
holder on C board wiring circuit case.
- 90 —
23) Tighten C board set screws to fix the C board.
‘о NOTE: Do not pinch the plug holder cord (BR) with arm
A and C board when fixing C board.
> … Pluz holder cord (В)
+
NOTE: Pass the B, C board connecting cord on the boss
of C board set screw, and it should not touch
the lamp cord.
| B,C board connecting cord
+- binding head small screw 4x10
|
C board set screw .—
+- binding head small
screw 4x10
Wiring circuit case cover set screw
+- binding head small screw 4x8 \
Wiring circuit case cover set screw
+- binding head small screw 4x8
24) Tighten the case cover set screws to fix the case
cover unit.
- 99 —
C board
connector
C board connector
Motor connector
Cord guide
Cord guide set screw
+- binding head small screw 4x8
25)
26)
27)
28)
29)
Connect the motor connector and the C board
connector.
Set the C board cord on the side of the plug holder
and shift the cord guide to the arrow direction.
Tighten the cord guide set screws.
After the connection, accomodate the connector in
the forked position of the cord guide.
Fix the belt cover.
- 93 -
REPLACEMENT OF THE MACHINE PLUG HOLDER
Set screw
+- binding head small screw 4x8
TO
E
(>)
——
p=
E
©)
Set screw
+- binding head small screw 4x8
REMOVE
Switch otf the power supply «ud unplug the machine
from power supply.
Remove tae belt cover.
Remove the wiriny circuit case cover by loosening
the set screws.
—- 94 —
me Cr rm rer Aa nan
lc board set screw
screw 4x8
C board wiring
circuit case
C board wiring circuit
case set screw
+ pan head tap tight
screw 3x12(B)
+- binding head small
Loosen the C board set screws and pull out the
C board from the base unit.
Pull out the C board wiring circuit case by
loosening set screws.
= OB —
6) Pull out the plug holder connector (A) (white colour,
2 pins) from the C board.
Plug holder connector A E )
(White color, 4 pins) NOTE: Do not pull the cords.
5
NOTE: Tf it is not convenient, pull out other connectors.
Plug holder connector A
- 96 —-
B board set screw
( + pan head tap tight screw 4x10)
B board set screw |
( + pan head tap tight screw 4x10)
7)
8)
Loosen the B board set screws.
Remove the B board from base unit.
= 97 —
Diode
Plug holder
connector (B)
(Blue, 3 pins)
NOTE :
NOTE
9) Grasp the connector of the plug holder (blue, 3 pins)
by radio pliers and pull it out from the B board.
Grasp the connector to pull it out and do not
pull the cords.
Make sure each cord or radio pliers should not
touch the diode.
- 98 —
a /
Plug holder
Plug holder set screw
I
+- binding head small
screw 4x10
10) Loosen the plug holder set screws.
11) Remove the plug holder from the machine.
12) Replace the plug holder.
- 99 —
Plug holder cord (B)
Plug holder
cord (A)
Plug holder set screw
+- binding head small
screw 4x10
TO FIX
13) Take out the plug holder cord (B) to the base side,
passing it to the inside of the pattern indicator
fixing plate.
14) Take out the plug holder cord (A) to the base side.
15) Fix the plug holder and tighten it with 2 set
screws.
NOTE: Do not grasp the cord.
- 100 -
16)
Plug holder connector
A
(White, 2 pins)
Plug holder connector (A)
>
Projection of connector
should be set at this side
Insert the connector (A) (white colour, 2 pins) of
the plug holder to the C board with convex surface
of the connector facing this side.
- 101 -
Plug holder
connector A
. Set screw
+ pan head tap tight screw
3x12 (B)
C board wiring
circuit case
set screw
7
_~C board wiring
circuit case
Lamp cord
17) Accomodate the plug holder cord (A) in the groove
of the C board wiring circuit case.
18) Fix the C board wiring circuit case and tighten
set SCrews.
NOTE: Lamp cord should be accomodated in the groove
of cord holder of the C board wiring circuit
case.
- 102 -
Eo
> Plug holder cord B
B,C board connecting cord
C board set screw(Right)
+- binding head small screw 4x10
6 | —
Ci
3
B,C board connecting cord i —||
—
_ TA
- A
C board set screw(Left) = ES С.
+- binding head small Ni el
screw 4x10 mi К се nf ||
Vo =
— =) — al
DI
— = A
= LOL
— NZE
19) Tighten set screws to fix C board.
NOTE: When fixing C board, do not pinch the plug
holder cord (B) with Arm and C board.
NOTE: B, C board connecting cord should not touch the
lamp cord, passing on the boss of the screw.
- 103 -
| 1
20) Insert the connector (B) (blue, 3 pins) of the plug
holder to the B board.
(connector is not reversible).
Plug holder
connector (B
Yellow »
color (Orange,Gray,
’ 7 Yellow color
cords from
this side)
- 104 -
Wiring circult case
cover set screw
+- binding head small
screw 4x8
B board set screw o da ‚он
+ pan head tap tight /
— /
screw 4x10
A
i
\ /
=
ç Ns — >
£
=
=
=o)
у
B board set screw
+- binding head small
screw screw 4x10 и
Wiring circuit case
cover set screw
+ binding head small
screw 4x8
Fix the B board and tighten set screws.
Fix the printed wiring circuit base cover and
tighten set screws.
Fix the belt cover.
- 105 -
TO CHANGE ARM SHAFT SENSOR UNIT
To remove the arm shaft sensor
Arm shaft sensor unit
T P screw 3x8
TO REMOVE
1) Remove top cover. (See p. 53)
2) Remove belt cover. (See p. 55)
3) Unplug connector of arm shaft sensor.
4) Remove pattern indicator unit.
5) Remove screws (2 pcs)
(See p. 68, p. 69.
too much.
Pattern indicator (unit)
A Board cord
pull out too much
- 106 -
(See p. 67)
and arm shaft sensor unit.
Do not pull out A board cord
Do not remove A board connector.)
/shield plate
Fig 2
Fix arm shaft sensor
Connector
A
; Arm shaft
Fig 3
Arm shaft
sensor (unit)
/Arm shaft
yd
Pattern indicator unit
>
bn
Da sensor unit
move to left
with some space
NEP screw Ixe
A board cord
Fig 4. fix pattern indicator unit
9)
10)
Change arm shaft sensor unit and fix by tightening
2 screws. (See figs. 2 and 3. Arm shaft sensor
unit should not touch arm shaft shield plate.)
Fix pattern indicator unit. (See fig. 4. Fix it
by pushing and inserting A board cord by hand.
See p. 74, p. 75.)
Plug connector. (Connector must surely be inserted.
See p. 76.)
Fix belt cover. (See p. 55.)
Fix top cover. (See p. 53.)
107 —
TO CHANGE PRINTED WIRING BOARD F UNIT
(Fig.1) Fix and remove pattern indicator unit
TO REMOVE:
1) Remove top cover. (See p. 53)
2) Remove belt cover. (See p. 55)
3) Remove pattern indicator unit.
(See fig. 1. See p. 67, p. 68, p. 69. Do not
remove A board connector. Do not pull out A board
cord too much.)
A board connector
( Do not remove)
= Hs
Es SN A
= \
LA
Pattern
indicator unit
A board cord
( Do not pull out too much)
F board
Middle fixing plate
F board connector
- 108 -
Fig 2
Pattern indicator unit
Fix and remove F board
4)
5)
F board
Insulated
paper
+ pan head tap
tight screw 3x10(B)
Ne binding head small screw 3x4
Middle fixing plate
Remove set screw and middle fixing plate.
(See fig. 2)
Remove set screws (2 pcs) and printed wiring board
F unit and insulated paper. (See fig. 2)
- 109 -
Put cord in to
the groove
Fig 4. fix insulated paper of F board
E
~~
> 3 lon washer —
2; pan head tap 7 y
tight screw 3x10(B) <
Fig. 5
Fix the middle fixing plate
` 73 _~"+- binding head
A small screw 3x4
Fig.3. fix printed
wiring board F unit
Printed wiring
board F unit
— Fig.6.
Zs <
- SQ
Washer
_ Middle fixing plate
Do not pinch cord
with middle fixing plate.
TO FIX
6) Change printed wiring board F unit and cover it with
insulated paper. (See Fig. 3 and 4)
7) Tighten set screw. (See Fig. 4)
8) Put cord in groove and fix middle fixing plate.
(See Fig. 4 and 5)
9) Tighten set screw.
(See Fig. 5 and 6. Do not pinch cord with middle
fixing plate.)
- 110 -
Fig 7
— Plug connector
10) Plug connector. (See Fig. 7)
11) Fix pattern indicator unit.
<<“. (See Fig. 8. See p. 74, p. 75, p. 76. Fix it by
9} pushing and inserting A board cord by hand.
= 12) Fix belt cover.
black 13) Fix top cover.
Connector
post
/ connector
cord
/(push and insert)
Fig 8
Fix the indicator unit
- 111 -
Motor set
TO CHANGE MOTOR (100-125 V)
screw
Motor
| | À 1 A
>... Motor pulley
5
©
set screw
o Te a Motor
! Ç —Ñ Y
Nor :
/
Cord guide | Connector
Motor cushion \
Remove belt cover. (See p. 55)
Take out and remove connector. Remove 2 set screws.
Remove motor belt and take motor out of arm.
Change motor.
Fix motor by putting it on motor cushion.
Tighten two screws temporarily. (make sure motor
cushion is not bent before fixing motor.
Accomodate lamp cord in the space between the motor
and arm.)
Fix motor belt and motor pulley on the arm shaft
belt wheel.
Adjust belt tension. (See p. 46)
Plug connector and accomodate it in the cord guide.
55)
Fix belt cover. (See p.
- 112 -
TO CHANGE MOTOR (200~240 V)
TO REMOVE
1) Remove belt cover.
Timing belt 2) Remove cord holder plate.
Motor set screw
+- binding head small 3) Remove 2 set screws.
screw 5x10 4) Remove timing belt.
5) Take motor out of arm.
6) Move connector cover to motor.
7) Separate the connector and change the motor.
TO REFIT
8) Plug the connector.
9) Fix the connector cover.
10) Fix the motor temporarily.
11) Fix timing belt and after adjusting the tension,
fix motor.
OT]
12) Fix cord holder.
—|
13) Fix belt cover.
Fig. 1
Connector
Fi
8. 3 Fig. 2 |
- 113 =
TO CHANGE TRANSFORMER
Te
N al
=
Am =
Tr
Base unit
Base unit set screw
Set screw 6x30
1
REMOVE
Remove base unit.
in B board.)
Remove connectors (6 pcs.) from B board. (See p. 79).
of C board. (See p. 85).
(Be sure not to put screws etc.
Remove set screws (2 pcs.)
Pull forward C board and remove set screws ( 3 pcs.)
Remove C board circuit case.
Remove transformer connector and lamp cord
connector. (See p. 86)
~ 114 -
Cord guide
set screw
Cord guide
Transformer
|
Transformer
set screw
Transformer
cord (A)
Red color
Transformer 07
in order to make transformer change easier it is better
to place C board at the right side of the transformer
(or above).
7) Loosen cord guide set screws (2 pcs.)
8) Remove transformer cord (A) from cord guide.
9) Remove transformer cord (B) from cord guide.
(Be careful not to change the shape of drop rod
when transformer is removed.)
10) Remove transformer set screws. (2 pcs).
11) Change transformer.
- 115
|
Cord guide
set screw
Cord guide
binding head
small screw 4x8
/
Вой
“TP screw 4x6
NN
Transformer
cord (A)
Drop rod
Transformer
Transformer
set screw
Red color
/ canelones cord (В) _
TO FIX
12) Fix transformer with 2 set screws.
(Be careful not to change the shape of drop rod.)
13) Place transformer cord (A) in cord guide.
14) Tighten 2 cord guide set screws.
(Transformer set screw should be tightened strongly.
Standard torque is 15 to 22 kg-cm)
15) Place transformer cord (B) in cord guide.
- 116 -
16)
17)
18)
19)
20)
21)
Base unit /
Base unit set screw
Set screw 6x30
Insert transformer connector and lamp cord connector.
(See p. 89)
Fix C board circuit case with 3 set screws.
(See p. 90)
Fix C board with 2 set screws.
(See p. 91)
Insert connectors (6 pcs) into B board.
(See p. 81)
Fix base unit with 4 set screws.
Check needle drop position and needle clearance.
NOTE: Do not pinch cords with parts.
- 117 -
SECTION III
To Adjust Drop Feed Position ......... 33
To Adjust Needle Drop Position ....... 34
To Adjust Presser Bar Height
and Direction ....oosxseorscororoocco ooo 35
To Adjust Needle Bar Height .......... 36
Easier Adjustment of Needle Bar
Height 0000000000000. 0.8.0.0. 0.0. 0.0.8.0 a 0. 8.0.40 37
To Adjust Hook Timing ................ 38
Easier Adjustment of Hook Timing ..... 39
To Adjust Clearance Between Needle
and Ratary Hook .......... e soocoocoo 40
To Adjust Feed Dog Height ............ 41
To Adjust Timing of Lateral Needle
SWING ...000 004000000000 1 000000 ..... 42
To Adjust Upper Thread Tension ........ 43
To Adjust Automatic Thread Tension
Release MechanisM ..Ñ.eesodsoocsooodoooooo 44
MECHANICAL ADJUSTMENT
To Adjust Micro-switch for Bobbin
Winder 424000 80 0 0 0 0 0 a sa a a a a a a aa VU
To Adjust Motor Belt Tension .........
To Adjust Super Stitch Feed
Mechanism ..eeocscooocoocoeoooooooooooooo
To Change Drive Motor ...... cere sarees
To Exchange the Check Spring .........
To
Change Needle Threader ............
Needle Threader 1/2 ..................
Needle Threader 2/2 ..Ñ.ooeeonaoooooooooa
TO
To
To
TO
Change Top Cover ........ . . 0 0.0. 0. 0.
Change Face Plate .................
Change Belt Cover .................
Change Bed Cover ...eoeooocaooooo И
SECTION IV TROUBLE-SHOOTING OF ELECTRONIC AND
ELECTRICAL COMPONENTS
Drawing of the Connectors Wiring
TO
To Check Foot Control
Check Transformer
To Check Main Drive Motor (For
(For 100-125 V)
# 5 € E UN" E & 4% в | ее бете вен +
To Check Main Drive Motor
(For 200-240 V) ...
E _ 4 # à ео. #4 5 6 # # # #6 + 4 a
Replacement of the Fuse (2.5 A) on
Replacement
B Board
Replacement
Replacement
Replacement
Replacement
TO
TO
TO
TO
To
of B Board
of C Board
C Board 000000000. 06.00. 0.8. 0.0.0.6. 0.0.0. 0. 0.0. 8. 0.04
of the Fuse (1.6 A) on
+ 8 © + U 8 E |. E +
с E 6 #6 € E & » # E NO e
я |. т бот # об он ов ов ов 8
# во вне 6 6 6% #4 à + 6 6 в т вот о E 2 O # #4 E + # 5 E 5 8 O E
Change Arm Shaft Sensor Unit ......
Change Printed Wiring Board F unit
Change Motor (100-125 М) ..........
Change Motor (200-240 М) ...... ....
Change Transformer
64
65
66
67-76
77-83
83-93
94-105
106-107
108-111
112
113
114-117
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