19
correct condition
Sewing lamp and lcd backlight lit.
lcd diSplayS “01”.
01)
fUnction of
lcd, bUzzer
and lamp
procedUre
tUrn on the power Switch
while SimUltaneoUSly preSS-
ing the Start/Stop bUtton
and locking Stitch bUtton.
preSS the Start/Stop bUtton.
if the reSUlt iS correct con-
dition, 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
Sewing lamp doeS not lit.
lcd backlight doeS not lit.
lcd doeS not diSplay “01”.
bUzzer doeS not SoUnd.
lcd doeS not tUrned on.
lcd doeS not diSplay any
SymbolS or not in order.
–Remedy–
replace the circUit board a.
bUzzer doeS not SoUnd.
bUzzer SoUndS. lcd diSplayS
SymbolS and nUmberS in order.
lcd repeatS diSplaying after all
SymbolS and nUmberS are Shown.
preSS bUttonS 1– 6.
lcd diSplayS “Sc 02”.
bUzzer SoUndS when bUtton iS
preSSed. bUtton nUmber iS diS-
played when the bUtton iS preSSed.
lcd diSplayS “S3” when bUtton 1 iS preSSed.
lcd diSplayS “S4” when bUtton 2 iS preSSed.
lcd diSplayS “S5” when bUtton 3 iS preSSed.
lcd diSplayS “S6” when bUtton 4 iS preSSed.
lcd diSplayS “S8” when bUtton 5 iS preSSed.
lcd diSplayS “S9” when bUtton 6 iS preSSed.
lcd diSplayS “Sc 03”.
when the bUttonhole lever iS
pUlled, bUzzer SoUndS and lcd
diSplayS bh Symbol.
when the bUttonhole lever iS
pUShed, bUzzer SoUndS and lcd
diSplayS bh Symbol.
bh symbol
bobbin symbol
if the reSUlt iS correct con-
dition, 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.
lower the bUttonhole lever.
move the bUttonhole lever
back and forth.
if the reSUlt iS correct con-
dition, 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.
move the bobbin winder
Spindle to the
right.
retUrn it to the left.
if the reSUlt iS correct con-
dition, 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.
1
4
3
2
5 6
02)
bUtton
03)
bUttonhole
SenSor
self-diagnostiC test
Step and
itemS to
check
04)
bobbin
winder
Switch
lcd diSplayS
“
Sc 04”.
when the bobbin winder Spindle iS
moved to the left, bUzzer SoUndS.
when the bobbin winder Spindle
iS moved to the right, bUzzer
SoUndS and lcd diSplayS the bob-
bin Symbol.
lcd doeS not diSplay the
nUmber correctly.
–Remedy–
replace the circUit board a.
replace the circUit board f.
bUzzer doeS not SoUnd.
bh Symbol doeS not appear.
–Remedy–
replace the circUit board a.
replace the circUit board f.
bUzzer doeS not SoUnd.
bobbin Symbol iS not diS-
played.
–Remedy–
replace the circUit board a.
replace the circUit board f.
