JUKI LZ-2290C/X73257 Instruction Manual And Parts List page 15

⑥ Adjusting the reflective plate asm.
The reflective plate asm.
should be in a position
to allow replacement
of the bobbin. (There
should be a space into
which you can put your
fingers.)
1) Adjust the reflective plate asm. with screws ❻ so that the sensor light hits the reflective tape of the reflec-
tive plate.
2) Rotating the main shaft one revolution by hand, check whether it interferes with the reflective plate.
If you want to check whether the bobbin can be changed, remove the jig from the under cover
and lift the bracket to raise the sewing machine.
* Adjust the position of the reflective plate asm. with the screws of the reflective plate asm.
In the case the bobbin
case is attached
Bobbin case
The reflective plate asm.
should not come in con-
tact with the hook.
The reflective plate asm.
should not come in con-
tact with the feed bar.
Sensor light
Reflective
seal
Light path
Check to make sure that the sensor light does not
hit the reflective tape of the reflective plate when the
bobbin case is not attached.
Since the position of the reflective seal
can cause a reduction in the amount of
sensor light received, adjust screws ❻
to position the reflective seal as de-
scribed below. (See the figures given
below.)
・ The bobbin case is attached
→Adjust the position of the reflective
seal so that the sensor light hits it.
・ The bobbin case is not attached
→Adjust the position of the reflective
seal so that the sensor light does not
hit it.
In the case the bobbin
case is not attached
OK
– 13 –
❻
NG