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SEWING MACHINE DIV. 20 MODEL 385.19001890
STEP
07) PRESSER F-OO"
SENSOR TEST
08) BUITONHOLE
SENSOR TEST
09) UPPERSHAFT
POSITIONING
SENSOR TEST
10) STEPPING
MOTOR TEST
11) MACHINE
MOTOR TEST
TEST
(LCD SHOWS "FOOl
LEVER')
• PRESSU/D NEEDLE
BUTTON FOR NEXT
STEP
•SHIFTTHE BH
LEVERBACK &
FORTH GENTLY
•TURN THE HAND
WHEEL TOWARD
YOU TO MOVE
THE NEEDLE BAR
TO HIGHEST POSI-
TION AND LOWEST
POSITION
•RAISE THE NEEDLE
BAR TO HIGHEST
POSITION AND
PUSH START/STOP
BUTrON
•LOWER THE
NEEDLE BAR TO
LOWEST POSITION
AND PUSH START/
STOP BUTTON
• PRESSSTART/STOP
BU1-FON
CORRECTCONDmOB DEFECT CONDITION & CORRECTION
(LCD SHOWS "BH
SENSOR STATE')
•WHEN LEVBRIS
PULLEDTOWARD
YOU--BUZZER
SOUNDS & INDI-
CATES "CLOSED"
ON LCD BOARD
•WHEN LEVERIS
RELEASED--
BUZZERSOUNDS &
INDICATES "OPEN"
ON LCD BOARD
(LCD SHOWS "BH
SENSOR")
•LCD SHOWS
"BIGHT" WHEN
NEEDLE ISAT
HIGHEST POSITION
•LCD SHOWS
"FEED"WHEN
NEEDLE ISAT
LOWEST POSITION
•NO BUZZER
SOUNDS
• LCD DOES NOT
SHOW "BIGHT"
OR "FEED". ALSO
LCD DOES NOT
CHANGE INDI-
CATION WHILE
TURNING
HANDWHEEL
• NOT WORKING
CORRECTLY
• NOT STOPPING
AT THE HIGHEST
POSITION OR
RUNNING AT
UNEVEN SPEED
• FIRST,CHECK F-
BOARD (SEEP.66)
IF F-BOARD ISOK,
REPLACE A-
BOARD (SEEP.53)
IF BOTH F-BOARD
& A-BOARD ARE
OK, REPLACE BH
SENSOR (SEEP.59]
• FIRST,REPLACE A-
BOARD (SEEP.53)
IF LCD ISSTILL
INCORRECT,
REPLACE UPPER
SHAFTSENSOR
(SEEP.60)
• FIRST,CHECK
STEPPING MOTOR
(SEEP.69). IF
STEPPING MOTOR
ISOK, REPLACE
A-BOARD (SEE
P.53)
(LCD SHOWS "STEP-
PING MOTOR')
•ZIGZAG STEPPING
MOTOR WILL
MOVE THE
NEEDLE, LEAVING
IT IN THECENTER
POSITION
•THE FEED DOGS
WILL MOVE BACK
AND FORTH IN THE
LOWER POSITION,
THENSTOP
•X AND Y-AXIS
STEPPINGMOTOR
WILL MOVE THE
CARRIAGE TO
HOME POSITION
• FEED DOG TO
HOME POSITION
(LCD SHOWS "DC
MOTOR")
•MACHINE RUNS
SLOW, AND FAST,
THEN NEEDLE BAR
STOPSAT THE
HIGHEST POSITION
• FIRST,CHECK THE
DC MOTOR (SEE
P.67). IF DC
MOTOR ISOK,
REPLACE A-
BOARD (SEEP.53)
WHEN ALL STEPSARE DONE. PRESS UP/DOWN BUTTON. CORRECT CONDITION :LCD SHOWS" 1,2,3,4,5,6,7.8,9.10._.*""SUMMARY ....
OK OK OK OKOK OK O_ OK OK OK
DEFECT CONDITION : LCD SHOWS "NG" UNDER THESTEP NUMBEr_.
13
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