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Brother BAS-311E Owner's Manual

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BAS-311E.311EL.326E.326EL
Chapter 6  Power supply and electrical parts adjustment
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 Home position is not properly detected.
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 Error [E.A1] appears.
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 Forward feed does not operate correctly.
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 Error [E.A1] appears.
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 Sideways feed does not operate correctly.
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 Error [E.A1] appears.
Connector No. and position
Problem
■ Contact failure
•
The connectors functions are divided into four categories. Some connectors may belong to more than one group. Be
sure to investigate another category if a problem is not found in one category.
•
Ffor the details of connections, refer to the control circuit block diagram at the end of this manual.
1. Feed mechanism
2. Work clamp lifter and thread trimmer mechanisms
•
 The work clamp does not operate. BAS-311E (Solenoid type)
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 Thread trimming is not performed.
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 Thread wiper does not operate.
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 The work clamp does not oeprate.
•
 The work clamp does not operate.
•
 The machine does not operate.
Main PCB
Main PCB
Main PCB
Main PCB
Main PCB
X home
position
sensor
Y home
position
sensor
Y pulse motor
X pulse motor
Foot switch
Control
box
Wiper
solenoid
Thread
trimming
solenoid
Sewing
clamp
solenoid
Presser
foot
solenoid