Janome 8050 Service Manual page 23

Step and
itemS to
check
attach the foot control to the
08)
Sewing machine.
foot
depreSS the foot control aS far aS
control
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.
Shift the Slide volUme from left to
09)
right, then retUrn to the left.
Slide
volUme
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.
10) preSS the needle Up/down bUtton.
dc motor
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.
11)
(not
applicable
for thiS
model)
12)
(not
applicable
for thiS
model)
self-diagnostiC test
procedUre correct condition
lcd diSplayS "Sc 08".
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 "Sc 09".
bUzzer SoUndS at right or left po-
Sition.
lcd diSplayS "Sc 10".
machine rUnS Slow, then faSt, and
the needle bar StopS at itS higheSt
poSition.
21
defective condition
the foot control Sym-
bol doeS not appear.
bUzzer doeS not
SoUnd.
–Remedy–
replace the foot con-
trol.
replace the machine
Socket.
replace the circUit
board a.
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.