Troubleshooting; Troubleshooting Flowchart - Brother LZ2-B855E Service Manual

8. ELECTRIC COMPONENTS

8-11. Troubleshooting

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall
outlet before opening the face plate of the control box. Touching areas where high voltages are present can
result in severe injury.

8-11-1. Troubleshooting flowchart

Start
Turn on the power.
Indication appear
on the display
YES
UP
NO
Ec1
NO
Ec2
NO
Ec3
NO
8-27
Symbols and their meanings
NO
Is the green LED
lamp on panel lit?
YES
#0
Turn the machine pulley
to move the needle bar
YES
to the needle up stop
position.
YES
YES
#3
YES
#4
LZ2-B855E,B856E
DANGER
Switch operation
Yes-or-no
decision-making
process
The error status number in the first column of the "8-11-2.
Problem solution and measures - table"
NO
To < Power does not come on. >
(page 8-30)
UP
NO
Does the needle bar
move before Ec1 is
indicated on panel.
NO
Set-up operation or condition
The procedure to follow
continues on the next
page
YES
#23
YES
#2-1
#2-2