JUKI LBH-1790 Instruction Manual page 8

(3) Changing the voltage of 100 / 200V
WARNING :
To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing
machine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or
more. To prevent accidents caused by unaccustomed work or electric shock, request the
electric expert or engineer of our dealers when adjusting the electrical components.
It s adaptable to the voltage of sngle phase 00V to 20V/3-phase 200V to 240V by changng the
voltage changeover connector mounted on FLT p.c.b.
(Caution) When the changing procedure is wrong, the control box will be broken. So, be
very careful.
A
WHITE
BLACK
RED
GREEN/
YELLOW
B
WHITE
BLACK
RED
GREEN/
YELLOW
C
WHITE
BLACK
RED
GREEN/
YELLOW
Changng procedure of the changeover connector
. Turn OFF the power source wth the power
2. Draw out the power cord from the power plug
3. Remove the front cover.
4. R emove four screws fixing the rear cover of the
A. In case of using with 3-phase 200V to 240V
• Changng the changeover connector
1
• Connect the crmp style termnal of AC nput cord
B. In case of using with single phase 100V to 120V
• Changng the changeover connector
(Plug side)
WHITE
BLACK
RED
• Connect the crmp style termnal of AC nput cord
GREEN/
YELLOW (Caution) Securely perform the insulation treat-
C. In case of using with single phase 200V to 240V
(Plug side)
• Changng the changeover connector
WHITE
BLACK
RED
• Connect the crmp style termnal of AC nput cord
GREEN/
YELLOW
(Caution) Securely perform the insulation treat-
5. Check that the change has been performed wth-
(Plug side)
WHITE
6. Be careful that the cord s not pnched between
BLACK
RED
GREEN/
YELLOW
– 6 –
switch after confirming that the sewing machine
has stopped.
socket after confirming that the power switch is
turned OFF. Then wait for five minutes or more.
control box and slowly open the rear cover.
Connect to 200V the 00/200V changeover con-
nector of FLT p.c.b. 1 located on the sde of the
Box Sde of the control box.
to the power plug as shown in the figure.
Connect to 00V the 00/200V changeover
connector of FLT p.c.b. 1 located on the sde of
the Box Sde of the control box.
to the power plug as shown in the figure.
ment to the red terminal which is not
used with insulation tape or the like.
(When the insulation is insufficient,
there is a danger of electric shock or
leakage current.)
Connect to 200V the 00/200V changeover con-
nector of FLT p.c.b. 1 located on the sde of the
Box Sde of the control box.
to the power plug as shown in the figure.
ment to the red terminal which is not
used with insulation tape or the like.
(When the insulation is insufficient,
there is a danger of electric shock or
leakage current.)
out fal before closng the rear cover.
the rear cover and the control box man unt.
Close the rear cover whle pressng the lower
sde of rear cover, and tghten four screws.