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PRECAUTIONS TO BE TAKEN SO AS TO USE
THE LK-1900B SERIES MORE SAFELY
1. To avoid electrical shock hazards, neither open the cover of the electrical box for the mo-
tor nor touch the components mounted inside the electrical box.
2. After changing the pattern, make sure the needle entry point. If the pattern is protruded
from the work clamp feet, the needle will interfere with the work clamp feet during sew-
ing, and it is dangerous due to the needle breakage or the like.
3. Do not turn OFF the power in a state that the needle is lowered. Wiper may break the nee-
dle.
1. In case nothing is displayed in the operation panel even when the power switch is turned
ON, turn OFF the power switch and check the power voltage and phase.
2. To prevent personal injury or death, never put fingers into the thread take-up lever, work
clamp, work clamp mechanism and thread take-up cover, and under or near the cloth cut-
ting knife and needle when turning on the power switch or while the machine is in opera-
tion.
3. To protect against possible accidents due to abrupt startup of the machine, turn OFF the
power switch before tilting the machine head or removing the motor cover.
4. So as to prevent possible accidents caused by abrupt start of the sewing machine, de-
press the start switch after ascertaining that there is no interfering thing under the needle
when winding the bobbin thread. In addition, never put your hair close to the machine
during thread trimming.
5. Feeding frame automatically comes down when pattern is changed, ready key is ON,
Presser switch is ON, intermediate presser button is ON and bobbin winder button is ON.
To prevent possible accidents caused by abrupt start of the sewing machine, never place
your fingers under the feeding frame.
6. To avoid personal injury, never bring your fingers, hair or clothing close to V belt, cloth
cutting knife or motor during operation, and never place anything on any of these parts.
7. To avoid personal injury, never operate the machine with the motor cover, eye protection
cover, or any other safety devices removed.
8. To prevent personal injury or death, do not operate the sewing machine with its covers
removed.
9. The operation panel displays safety warnings. It is necessary therefore to first verify
normal display on the panel when the power switch is turned on, before operating the
sewing machine.
10. To prevent personal injury or death, do not press the hand pulley while the sewing ma-
chine is in operation.
11. To avoid personal injury, be careful never to allow your fingers to go inside the machine
when tilting or raising the machine head.
12. To prevent possible accidents due to electric shocks or damaged electrical compo-
nent(s), always turn OFF the power switch before connecting or disconnecting the
power plug.
Содержание LK-1900B series
Страница 128: ... 114 4 Parts to which grease is applied 1 Work clamp foot lifter area 2 Wiper area Grease JUKI Grease A Grease ...
Страница 129: ... 115 3 Thread tension area 4 Thread trimmer area Grease Grease JUKI Grease A ...
Страница 130: ... 116 5 Feed area Grease Grease D ...
Страница 131: ... 117 6 Needle bar and main shaft area 7 Lower shaft area JUKI Grease A JUKI Grease A ...
Страница 132: ... 118 8 Needle thread clamp mechanism area For LK 1900BB 1903BB Grease ...
Страница 133: ... 119 9 LK 1901B relations Grease ...
Страница 134: ... 120 10 LK 1903B relations Grease ...
Страница 135: ... 121 11 LK 1900BB 1903BB relations JUKI Grease A ...
Страница 164: ... 150 4 Power supply circuit diagram Single phase SDC board MAIN board Light blue Orange Brown Yellow Red Black ...