Janome DC5100, Service Manual

Page: 13 / 44

11
SEWING MACHINE MODEL DC5100
* PRESS THE CLR BUTTON TO RETURN TO ”STEP 1”. END THE SELF DIAGNOSTIC TESTS.
Step5 VeloSen
000
Step6 Volume
255
Step7 FootCont
210
Step8 Stm
BM Phase
MEM
Step8 Stm
FM Phase
MEM
Step9 SewMotor
CORRECT RESULTS
• THE DISPLAY SHOWS “VeloSen”.
• BEEP SOUND.
• THE VALUE SHOULD BE 365 TO 375
WHEN THE HANDWHEEL IS ROTATED
ONCE.
PRESS CLR BUTTON TO PROCEED TO
THE NEXT STEP.
• THE DISPLAY SHOWS “Volume” AND
THE MACHINE BEEPS.
• WHEN THE SPEED CONTROL LEVER
IS AT LEFT, THE SCREEN DISPLAYS
“000” TO “010”.
• WHEN THE SPEED CONTROL LEVER
IS AT RIGHT, THE SCREEN DISPLAYS
“255” TO “250”.
PRESS CLR BUTTON TO PROCEED
TO THE NEXT STEP.
• THE DISPLAY SHOWS “FootCont” AND
THE MACHINE BEEPS.
• WHEN THE FOOT CONTROL IS NOT
DEPRESSED, THE SCREEN SHOULD
DISPLAY “000” TO “016”.
WHEN THE FOOT CONTROL IS
DEPRESSED FULLY, THE SCREEN
SHOULD DISPLAY 210” TO “200”.
PRESS CLR BUTTON TO PROCEED
TO THE NEXT STEP.
• THE DISPLAY SHOWS “Stm” AND
THE MACHINE BEEPS.
• THE NEEDLE IS CENTERED.
• THE FEED MOTOR IS INITIALIZED.
(THE STITCH LENGTH IS “0”)
PRESS CLR BUTTON TO PROCEED
TO THE NEXT STEP.
• THE DISPLAY SHOWS “SewMotor”
AND THE MACHINE BEEPS.
TESTS
TURN THE HANDWHEEL
CLOCKWISE TO MOVE THE
NEEDLE FROM HIGHEST TO
THE LOWEST POSITION.
SET THE SPEED CONTROL TO
THE LEFTMOST POSITION.
THEN SLIDE THE SPEED
CONTROL LEVER FROM LEFT
TO RIGHT, THEN RETURN TO
LEFT.
DEPRESS THE FOOT CONTROL
FULLY, THEN RELEASE THE
FOOT CONTROL.
TURN THE HANDWHELL
TOWARD YOU TO MOVE THE
NEEDLE FROM HIGHEST TO
THE LOWEST POSITION.
CHECK THE SCREEN.
DEPRESS THE FOOT CONTROL
TO CHECK THE SEWING SPEED.
5)
VELOCITY
SENSOR
(DC MOTOR)
6)
SLIDE VOLUME
7)
FOOT CONTROL
8)
ZIGZAG WIDTH
MOTOR
FEED MOTOR
9)
DC MOTOR
DEFECTIVE RESULTS /
REPLACEMENT AND
ADJUSTMENT
DEFECTIVE RESULTS:
• THE VALUE DOES NOT CHANGE.
• THE VALUE DECREASES WHEN
THE FOOT CONTROL IS
DEPRESSED.
REPLACE:
• REPLACE THE DC MOTOR.
• REPLACE THE BOARD A.
DEFECTIVE RESULTS:
• THE VALUE DOES NOT CHANGE.
• THE VALUE DOES NOT MATCH.
WITH THE CORRECT RESULTS.
REPLACE:
• REPLACE THE DC MOTOR.
• REPLACE THE BOARD A.
DEFECTIVE RESULTS:
• THE VALUE DOES NOT CHANGE.
• THE VALUE DECREASES WHEN
THE FOOT CONTROL IS DE
PRESSED.
REPLACE:
• REPLACE THE FOOT CONTROL.
• REPLACE THE BOARD A.
DEFECTIVE RESULTS:
• THE VALUE DOES NOT CHANGE.
• THE NEEDLE IS NOT CENTERED.
REPLACE:
• REPLACE THE ZIGZAG WIDTH
MOTOR.
• REPLACE THE BOARD A.
DEFECTIVE RESULTS:
• THE VALUE DOES NOT CHANGE.
REPLACE:
• REPLACE THE FEED MOTOR.
• REPLACE THE BOARD A.
DEFECTIVE RESULTS:
• THE MOTOR DOES NOT START, OR
ROTATES UNSTABLY.
REPLACE:
• REPLACE THE DC MOTOR.
• REPLACE THE BOARD A.
SELF DIAGNOSTIC TESTS