Method For Unlocking And Locking The Index Plunger (At Two Locations) - JUKI LZ-2290C/X73257 Instruction Manual And Parts List

14-3. Method for unlocking and locking the index plunger (at two locations)

WARNING
1. Do not tilt or raise the main body of sewing machine with the operation plate held down. Doing so can
cause the sensor to move out of position.
2. If the operation plate interferes with the under cover, the sensor sensitivity should be checked as de-
scribed in "9. Turning the sensor"
procedures described in
Locked state
Unlocking method
①
Knob
p.14. If you find a problem with the sensor sensitivity, carry out the
"8. Adjusting the sensor position" p.11
Index plunger
②
– 30 –
and "9. Turning the sensor"
Unlocked state
[ Unlocking method ]
① Pull the knob in the direction of the arrow.
② Turn the knob counterclockwise by 90 degrees.
[ Locking method ]
Turn the knob in the direction opposite to the direc-
tion you have turned the knob in step ① (Unlocking
method).
The knob will automatically turn, by spring pressure,
in the direction opposite to that in step ① . In some
cases, however, the knob will not be fully returned to
its home position. It is therefore necessary to push
the top of the knob into position by hand.
When the display on the amplifier is "9999", the in-
dex plunger is correctly locked.
p.14.