20
correct condition
lcd diSplayS “08”.
Step and
itemS to
check
08)
foot
control
procedUre
attach the foot control to the
machine.
depreSS the foot control aS far aS
it goeS, then releaSe it.
if the reSUlt iS correct condition,
preSS the Start/Stop bUtton to
proceed the next Step.
if the reSUlt iS defective condition,
preSS the reverSe Stitch bUtton to
proceed the next Step.
defective condition
the foot control Sym-
bol doeS not appear.
bUzzer doeS not
SoUnd.
–Remedy–
replace the foot con-
trol.
replace the machine
Socket (foot control
Socket).
replace the circUit
board a.
Shift the Slide volUme from left to
right, then retUrn to the left.
if the reSUlt iS correct condition,
preSS the Start/Stop bUtton to
proceed the next Step.
if the reSUlt iS defective condition,
preSS the reverSe Stitch bUtton to
proceed the next Step.
09)
Slide
volUme
preSS the needle Up/down bUtton.
if the reSUlt iS correct condition,
preSS the Start/Stop bUtton to
proceed the next Step.
if the reSUlt iS defective condition,
preSS the reverSe Stitch bUtton to
proceed the next Step.
the foot control Symbol appearS
when the foot control iS attached.
bUzzer SoUndS when the foot
control iS deeply depreSSed.
bUzzer SoUndS when the foot
control iS releaSed.
lcd diSplayS “09”.
10)
dc motor
bUzzer SoUndS at rightmoSt or
leftmoSt poSition.
lcd diSplayS “10”.
bUzzer doeS not
SoUnd.
–Remedy–
replace the circUit
board a.
the machine motor
doeS not Start.
the motor StopS
immediately.
the motor rUnS
UnStable.
–Remedy–
replace the dc motor.
replace the circUit
board a.
self-diagnostiC test
machine rUnS Slow, then faSt, and
the needle bar StopS at itS higheSt
poSition.
11)
thread
tenSion
releaSe
Solenoid
foot
control
Symbol
lower the preSSer foot.
preSS the needle Up/down bUtton.
if the reSUlt iS correct condition,
preSS the Start/Stop bUtton to
proceed the next Step.
if the reSUlt iS defective condition,
preSS the reverSe Stitch bUtton to
proceed the next Step.
lcd diSplayS “11” and “–off”.
preSS the needle Up/down bUtton
to Switch the Solenoid on or off.
[on]
bUzzer SoUndS and the the thread
tenSion diSk openS, and lcd diS-
playS “--on” while the thread tenSion
diSk openS.
(the thread teniSon diSk will be
cloSed aUtomatically 5 SecondS
after the thread tenSion releaSe.)
[off]
bUzzer SoUndS and the thread ten-
Sion diSk cloSeS, and lcd diSplayS “–
off”.
the thread tenSion
diSk doeS not open.
–Remedy–
replace the Solenoid.
replace the circUit
board a.
