Janome MC9500 User manual

SERVICE MANUAL
MC9500
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MECHANICAL ADJUSTMENT
Changing External Parts (1) Face Cover/Top Cover................................................................1
Changing External Parts (2) Belt Cover...................................................................................2
Changing External Parts (3) Base Cover.................................................................................3
Changing External Parts (4) Bed Cover/ Base Lid (2) .............................................................4
Changing External Parts (5) Base Unit....................................................................................5
Changing External Parts (6) Front Cover.................................................................................6
Changing External Parts (7) Rear Cover ................................................................................7
Adjusting Needle Drop Position ...............................................................................................8
Adjusting Presser Foot Position and Height.............................................................................9
Adjusting Hook Timing ............................................................................................................10
Adjusting Needle Bar Height...................................................................................................11
Adjusting Clearance between Needle and Hook ....................................................................12
Adjusting Backlash between Hook Drive Gear and Lower Shaft Gear ...................................13
Adjusting Feed Dog Height .....................................................................................................14
Adjusting Upper Shaft Shield Plate Position ...........................................................................15
Adjusting Needle Thread Tension ...........................................................................................16
Adjusting Tension Release Mechanism ..................................................................................17
Changing Thread Tension Unit................................................................................................18
Adjusting Stretch Stitch Balance.............................................................................................19
Replacing Threader Plate and Adjustment .............................................................................20
Adjusting Height of Embroidery Foot P.................................................................................. 21
ADJUSTMENT FOR ELECTRICAL COMPONENTS
Connector Connection Diagram..............................................................................................22
Replacing Printed Circuit Board A ..........................................................................................23
Replacing Touch Panel (LCD) .................................................................................................24
Replacing Printed Circuit Board F ..........................................................................................25
TTP Adjusting Mode................................................................................................................26
Adjusting Solenoid ..................................................................................................................27
Adjusting Buttonhole Lever .....................................................................................................28
Adjusting Presser Foot Sensor ...............................................................................................29
Adjusting Presser Foot Lifter Sensor ......................................................................................30
Adjusting Remaining Bobbin Thread Sensor ..........................................................................31
Replacing DC Motor and Motor Belt Tension Adjustment .......................................................32
Replacing Carriage Plate (Unit) ..............................................................................................33
Adjusting Feed Dog Up/Down Position ...................................................................................34
Adjusting X andY Sensors......................................................................................................35
Adjusting X andY Sensors (Simple Adjustment) ....................................................................36
Adjusting X Motor Gear...........................................................................................................37
Replacing Switching Power Supply.........................................................................................38
TABLE OF CONTENTS
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1
MC 9500
Replacing the top cover
To remove:
1 Open the Top cover and remove Screw (B) .
2 Raise the carrying handle and remove Screw (C) .
3 Pull out the Top cover to the rear side.
To attach:
4 Raise the carrying handle, insert theTop cover from
rear side to toward you and tighten Screws (B) ,
(C) to attach the Top cover .
Changing External Parts (1) Face Cover/Top Cover
To remove:
1. Remove the Cap and Screw (A) and remove
the Face Cover .
Cap
Screw (A)
Face cover
To attach:
2. Attach the Face Cover and tighten Screw (A) ,
then attach the Cap .
Replacing the face cover
3
21
1
2
3
12
3
3 2
1
1
2
3
12
3
1
2
3
1
Top cover
Screw (B)
Screw (C)
1
2
3
1
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2
MC 9500
Changing External Parts (2) Belt Cover
Replacing the belt cover
To remove:
1 Raise the carrying handle and remove Screw (A) .
2 Remove the Cap and remove Screw (B) .
3 Lay the machine down on its back and remove Screws
C and D , then remove the Belt cover .
Screw (A)
Cap
Screw (B)
Screw (C)
Screw (D)
Belt cover
To attach:
4 Match the Belt cover position with the front cover.
5 Attach the Belt Cover with Screws (A - D) - .
5. Attach the Cap .
1
2
6
45
2 5
1
1
23
6
4
5
6
3
1
2
3
4
5
6
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3
MC 9500
Changing External Parts (3) Base Cover
Replacing the base cover
To remove:
1 Remove Screws (4 pieces) to remove the base
cover .
Screw
Base cover
To attach:
2 Follow the above procedure in reverse.
1
2
1
2
121
1
1
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4
MC 9500
Changing External Parts (4) Bed Cover / Base Lid (2)
Replacing the bed cover
To remove:
1 Remove the base cover.
2 Remove Screws (A) (2 pcs.), and remove the
Base Lid (1) .
3 Remove Screws (B) (2 pcs.), and remove the Bed
cover .
4 Disconnect the connectors .
Screws (A)
Base lid (1)
Screws (B)
Bed cover
Drop feed lever
Connectors
To attach:
5 Follow the above procedure in reverse.
* Set the Drop feed lever as shown, place the mated
connectors in the bed cover.
Replacing the base lid (2)
To remove:
1 Remove Screws (4 pieces), and remove the Base
lid (2) .
Screw
Base lid (2)
To attach:
2 Follow the above procedure in reverse.
1
23
4
1
2
1
2
2
1
2
3
4
6
5
1
2
3
4
5
6
1
1
1
65
6
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5
MC 9500
Changing External Parts (5) Base Unit
Base
To remove:
1 Remove the Belt cover. (See page 2)
2 Remove Screw (A) (4 pcs.), and remove
the base unit .
3 Disconnect the X Motor andY Motor Connectors
from the printed circuit board A.
Screws (A)
X-motor connector (Blue)
Y- motor connector (White)
Extension table (Accessory)
To attach:
4 Connect the X,Y-Motor connectors , to the printed
circuit board A.
5 Insert the X,Y-Motor cords between the printed circuit board
A and Arm.
Make sure that the cords should not be caught between
the arm and base unit when attaching it, then tighten Screw
(4 pieces) temporarily.
6 Attach the Extension (Accessory) table .
7 Tighten Screws (A) while aligning the extension
table, base unit and free Arm.
8 Attach the belt cover.
1
23
1
4
1
23
1
23
4
1
1
1
2
3
4
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6
MC 9500
Changing External Parts (6) Front Cover
To remove:
1 Remove the top cover, base cover and bed cover.
(See page 1 - 4).
2 Remove Screw (A) and remove the Arm thread
guide (lower) .
3 Remove Screw (B) .
4 Loosen Screw (C) , (D) .
5 Disconnect the each connector and remove the front
cover.
Note: Unlock the Hooks before removing the front cover.
Screw (A)
Arm thread guide (Lower)
Screw (B)
Screw (C)
Screw (D)
Hooks (2 spots)
To attach:
6 Follow the above procedure in reverse.
Note: See page 22 (Diagram) for “Connectors
Connection”.
Front cover
1
2
2
1
4
3
6
5
3
4 5
1
2
3
4
5
6
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7
MC 9500
Changing External Parts (7) Rear Cover
1 Remove the top cover and belt cover.
2 Loosen Screws (A) , (B) , (C) (D) and
remove the Rear cover .
Screw (A)
Screw (B)
Screw (C)
Screw (D)
Rear cover
To attach:
3 Follow the above procedure in reverse.
Rear cover
To remove:
2
13
54
2
1
4
35
2
1
4
3
5
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8
MC 9500
Adjusting Needle Drop Position
When the straight stitch is selected on the touch panel, the needle should be positioned in
the center of the needle plate hole.
When the zigzag stitch is selected with the zigzag width set to the maximum (7.0 ), the
clearance between the side of the needle and the edge of hole of the needle plate at the left
and right needle position should be 0.2 mm or more.
2
1
3
4
2
1
3
4
5
5
5
Screw
Zigzag rod
Needle
Needle plate hole
0.2 mm or more
1 Remove the top cover and slect the pattern No.1 (Straight
stitch).
Lower the needle to its lowest position by turning the
handwheel toward you.
2 Loosen the Screw .
Move the Zigzag rod left or right to set the needle
in the center of the Hole of the needle plate , then
tighten Screw .
3 Select the pattern No.6 (Zigzag).
Set the zigzag width to maximum (7.0).
4 Turn the handwheel toward you to check if the
clearance between the side of the needle and the
edge of the Hole of the needle plate , at the left
and right needle position, is 0.2 mm or more .
5 Attach the top cover.
A = B
2
1
14
3
5
4
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9
MC 9500
Adjusting Presser Foot Position and Height
When the presser foot is raised, the clearance between the presser foot and the needle
plate should be 0.6 mm.
When the presser foot is lowered, the edge of the foot and the feed dog window on the
needle plate should be parallel.
1 Remove the face cover.
2 Raise the presser foot, loosen Screw to adjust the
presser foot position and presser foot height, then
tighten screw .
3 Attach the face cover.
2
1
3
4
5
2
1
3
4
5
Screw
Presser foot
6.0 mm
Feed dog window
Should be parallel
1
1
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10
MC 9500
Adjusting HookTiming
When the pattern No.2 is selected, the amount of ascending travel of the needle bar from its
lowest position to the position where the tip of the rotary hook exactly meets the right side
of the needle should be 3.25 to 3.55 mm.
1 Remove the belt cover, bed cover, base cover, base lid
(1) and base lid (2).
2 Turn the power switch “ON” and select the pattern
No.2.
3 Press the “ADJUST” key and set the zigzag width at
“0” by manual adjustment, then turn the power switch
“OFF”.
4 Remove the presser foot, needle plate and bobbin
holder.
5 Lower the needle to its lowest position by
turning the handwheel toward you.
6 In this condition, if the convex of the feed lifting cam
is in the lowest position, loosen screws of the
lower shaft gear (G) .
If not, loosen screws (2 pieces) of the lower shaft
timing gear .
7 Raise the needle bar further 3.4 mm from the
lowest position .
8 Turn the lower shaft gear until the tip of rotary
hook meets with the right side of the needle .
Tighten the screws of the lower shaft gear or the lower
shaft timing gear , .
9 Reattach the bobbin holder, needle plate and presser
foot.
10 Reattach the base lid, base lid (1) base cover, bed
cover and belt cover.
2
6
3
7
1
6
5
4
98
9 1
5
6
3
5
47
13
6
8
Lowest needle position
Convex of feed lifting cam
Lower shaft gear (G)
Lower shaft timing gear
Screws (2 pieces)
Screw (F)
3.25 to 3.55 mm
The tip of rotary hook meets with the right side of
the needle.
Needle #14
7
6
8
9
2
1
3
4
5
6
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11
MC 9500
Adjusting Needle Bar Height
The standard distance between the upper edge of the needle eye and the tip of the rotary
hook should be in the range of 1.6 - 2.0 mm when the rotary hook meets the right side of the
needle in ascending travel of needle from its lowest position.
1 Remove the presser foot, Needle plate and
Bobbin holder .
2 Turn the power switch “ON”and select the pattern No.2.
3 Press “ADJUST”key and set the zigzag width at “0”,
then turn the power switch “OFF”.
4 Turn the handwheel to raise the needle bar from the
lowest position until the tip of the rotary hook meets
with the right side of the needle .
5 Remove the face cover and loosen Screw as shown.
6 Move the Needle bar up or down to adjust the
needle bar height.
7 Tighten the Screw .Be sure that the groove on the
needle bar facing right in the front.
8 Attach the face cover.
9 Reattach the Bobbin holder , Needle plate (A) ,
presser foot.
Needle plate (A)
Bobbin holder (B)
Screw
Needle bar
Groove
Surface of hook race
1.6 to 2.0 mm
Top of needle eye
Rotary hook race
Needle #14
1
2
11 3
4
3 5
2
1
3
4
10
5
67
8
9
21
2
1
3
4
6
5
7
8
9
10
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12
MC 9500
Adjusting Clearance between Needle and Hook
The clearance between needle and rotary hook should be -0.10 to + 0.05 mm.
1 Remove the needle plate, bobbin holder, base cover
and bed cover (See page 3 - 4), and attach the Test
pin .
2 Turn the power switch “ON” and select the pattern
No.6, then set the zigzag width at “ 7.0 ”by pressing
“ADJUST” key.
3 Loosen Screws (A) , (B) , (C) and tighten
Screw (C) temporarily.
4 Turn the handwheel toward you and adjust the
clearance between the Test pin and the Tip of
rotary hook to - 0.10 to + 0.05 mm by moving
the Rotary hook set plate up or down.
5 Tighten the screws (A) ,(B) , (C) firmly.
6 Check the rotary hook driver gear and the lower shaft
gear backlash.
If gears mesh or engage tightly or loosely, check
“Adjusting Backlash between Hook Drive and Lower
Shaft Gear”. (See page 13 )
7 Reattach the bed cover, base cover, base lid, needle
plate, bobbin holder and needle.
Test pin
Screw (A)
Screw (B)
Screw (C)
Rotary hook set plate
- 0.10 to +0.05 mm
Tip of rotary hook
42
5
3
6
1
7
2
4
1
34
2
1
3
4
6
5
7
2
1
3
4
6
5
7
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13
MC 9500
A
B
Adjusting Backlash between Hook Drive Gear and Lower
Shaft Gear
The rotary play of the hook should be 0.8 mm or less when the tip of the rotary hook is
within the width of the feed dog as shown below.
Adjust the backlash after the adjustment of the clearance between needle and rotary hook.
To check:
1 Turn the power switch “OFF”
2 Remove the base cover and bed cover. (See page 3 - 4)
3 Loosen the Hexagonal socket screw .
Jog the hook race with fingers to check the rotary play.
“If the play is larger than 0.8 mm or the gears do not turn
smoothly, adjust the backlash as follows”
Adjustment procedure:
1 Turn the Lower shaft bushing (Eccentric), in th
direction of “A” when the play at rotary hook tip is too
large.
2 Turn the Lower shaft bushing (Eccentric), in the
direction of “B” when the play at rotary hook tip is too
small.
3 Tighten the Hexagonal socket screw .
4 Reattach the bed cover and base cover.
Hexagonal socket screw
Lower shaft bushing
The rotary hook play should be 0.8 mm or less.
Tip of rotary hook
1
2
1
3
4
2
1
2
1
2
3
4
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14
MC 9500
Adjusting Feed Dog Height
When the pressure adjusting dial is set at“3”and the presser foot is lowered, the highest
position of the feed dog should be 0.80 to 0.90 mm from the surface of the needle plate.
To adjust feed dog height
1 Remove the base cover, base lid (1) and bed cover.
2 Set the pressure dial at “3” and lower the presser bar
lifter, then turn the power switch “ON”.
3 Turn the handwheel toward you until the feed dog
comes to its highest position.
4 Loosen Screw (A) .
5 Loosen Nut and adjust the feed dog height to 0.8
to 0.90 mm by turning the adjusting screw (B) .
6 Tighten Nut .
7 Tighten Screw (A) .
To adjust the feed dog position parallel to
needle plate
Turn the handwheel toward you until the feed dog
comes to its highest position, the feed dog and the
needle plate should be parallel. If not, follow the
instructions below.
8 Prepare the hexagonal socket screw and insert it
to the Threaded hole (C) and screw it until the tip
of threaded screw reaches the bottom.
9 Loosen Screw (D) .
10 Turn the hexagonal socket screw and adjust the
feed dog parallel to the needle plate.
11 Tighten Screw (D) .
12 Loosen the hexagonal socket screw and remove
it.
13 Reattach the bed cover, base cover and base lid (1)
21
3
8
10
98
2
13
4
6
57
9
8
10
2
6
1
5
5
10 8
Screw (A)
Nut
Screw (B)
Presser foot
Feed dog
0.80 to 0.90 mm
Needle plate serface
Hexagonal socket screw (4 x 6)
Threaded hole (C)
Screw (D) (Left hand screw)
1
2
3
4
5
6
7
8
9
10
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15
MC 9500
Adjusting Upper Shaft Shield Plate Position
When the machine is set for zigzag stitch, the needle should start to swing 8.3 to 8.7 mm
above the surface of the needle plate.
1 Remove the top cover (See page 1) and turn the power
switch “ON”, then select the pattern No.6 (Zigzag).
2 Turn the handwheel toward you slowly, with your hand,
until the needle starts to swing.
(A) If the needle stops higher than 8.7 mm, loosen
Screw and turn the Upper shaft shield plate
in the direction of (A).
(B) If the needle stops lower than 8.3 mm, loosen
Screw and turn the Upper shaft shield plate
in the direction of (B).
3 Position the right face of the Upper shaft shield plate
in the center of slit of the Upper shaft sensor
and tighten Screw .
Screw
Upper shaft shield plate
8.3 to 8.7 mm
Upper shaft sensor
Needle #14
1
2
2
1
2
4
1
1
2
3
4
5
12
3
4
5
6
(A)
(B)
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16
MC 9500
( + )
Adjusting NeedleThreadTension
The standard upper thread tension should be 75 to 90 grams when the tension dial is set at
“AUTO”, measured with a #50 polyester thread being pulled at approximately 110 mm/sec.
in the direction of arrow.
1 Set the Thread tension dial at “AUTO”.
2 Lower the presser foot.
3 Remove the face cover and adjust the thread tension.
(A) If the thread tension is less than 75 g,
.................turn the screw in the direction of “ + ”.
(B) If the thread tension is more than 90 g,
...............turn the screw in the direction of “ - ”
Pulling direction: (pulling speed 110 mm/sec.)
1
( )
1
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17
MC 9500
Adjusting Tension Release Mechanism
When the presser foot lifter is raised, the tension release mechanism should work correctly.
If not, adjust as follows.
1 Remove the top cover unit.(see page 1)
2 Lower the presser foot lifter, set the thread tension dial
at “9” and loosen the Screw (A) .
3 Press the tension release plate (1) lightly against
the Disc holder while pushing the tension release
plate (2) in the direction of arrow, then tighten
Screw (A) .
4 Set the thread tension dial at “9”.Raise the presser
foot lifter to check the tension release mechanism.
5. Set the thread tension dial at “0”.
Lower the presser foot lifter.
Make sure the tension disc should not move
when the tension release plate (2) is moved within
its play.
6 Reattach the top cover.
Screw (A)
Tension release plate (2)
Tension release plate (1)
Disc holder
Tension disc
1
1
2
1
3
2
34
2
1
4
3
2
1
2
3
4
5
5
4
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18
MC 9500
ChangingThreadTension Unit
1 Remove the front cover. (See page 6)
2 Remove Screws (A) , (B) and thread tension
unit.
To attach:
3 Follow the above procedure in reverse.
Note: After changing the thread tension, check the
tension release mechanism and solenoid.
To remove:
1
2
1
2Screw (A) Screw (B)
12
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