Mitsubishi PLK-J-CU-20S Technical Manual page 8

9. The sewing machine will coast to a stop when the power is turned OFF or a power failure occurs during sewing machine
operation.
10. Always align the connector shape and direction, and securely insert the connector.
11. If the position detector's connector dislocates, or the sewing machine is completely locked, the motor will be turned OFF
automatically for a set time to prevent burning. (Note that the motor may not turn OFF if there is incomplete locking or an
overload.) When the fault has been recovered, turn the power OFF and ON once to resume normal operation. The same type
of operation will take place if a detector fault or disconnection occurs.
12．Use the machine away from strong noise sources such as
high frequency welders.
Noise
14. If the fuse blows, remove the cause, and replace the blown fuse with one having the same capacity.
PWR Board
(View from the front with cover removed)
8A fuse (two fuses)
15. Attention when power supply is turned on again
Please make sure not to turn on the power supply switch until after the LED on the front
panel of the control box has completely turned off.
(Please do not turn on the power supply again while displaying the screen of the operation
panel.)
* If the above operation is not observed, the presser foot (O4 output) may move unexpectedly.
When the value of the sewing area limit is changed or the limit setting is deactivated, note the collision and
16.
take care safely.
Also when using it outside, it cannot assume the responsibility for all problems caused by it.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com
2.5A fuse (two fuses)
CPU Board
I/F board located
on back of machine head
13. When connecting the external switch to an optional
connector, etc., keep the signal wire as short as possible.
A long wire could cause malfunctions.
Use a shielded wire for the signal wire when possible.
PMD Board
(View from the front
with the cover and CPU removed)
2-2
20A fuse
SRV Board
(two fuses)
20A fuse
(two fuses)