Troubleshooting Flowchart - Brother LK3-B430E Mark II Service Manual

10. ELECTRIC MECHANISM

10-12. Troubleshooting flowchart

10-12-1. Troubleshooting flowchart
Symbols and their meanings
Turn on the
power.
When the
power is
Is the power lamp lit?
turned on.
Does error code appear
on the display?
Press the Menu
switch 2 or 3
the lit lamp position
vary each time the switch
is pressed?
program
number
Moving to
the home
position
Press the foot
switch to the
second position,
and release it.
77
Indicates switch operation.
Requires selection of the course
of action to follow, using a yes-
or-no decision-making process.
Indicates the error status number
in the first column
"problem solution and measures"
table, and consequently
procedure to follow.
Start
Note: Be sure to set DIP switch A-1 on the front panel to off before starting the troubleshooting
flowchart.
NO
YES
YES
NO
times.
Does
NO
YES
Set the
to 00.
(Special): For machines with two pedal foot switches, press the start
pedal.
Note: If error code [E-50] appears on the display window, turn the pulley
to raise the needle to its highest position.
(Special)
of the
Note:
the
Turn off the
power.
Turn off the
power.
Turn off the
power.
Turn on the
power.
LK3-B430E Mark II
Indicates set-up operation
present condition.
Indicates that the procedure to
follow continues on the next page.
indicates special specification.
indicates an item to be noted.
#1
#2
#3
or