Brother BAS-343E Instruction Manual download pdf (Page 64)

14. Troubleshooting

57

BAS-343E

50

12

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13

5

Check RemedyProblem Cause

Page

Unstable upper thread

length

Unstable needle up

stop position

Electrical trouble

Inadequate adjustment

of V belt tension

Fixed knife is blunt.

Needle up stop position

fluctuates.

Improper adjustment

of sub tension

Improper tension and height

of thread take-up spring

Thread take-up spring

tension and height

sub tension

See "Unstable needle up

stop position."

Fixed knife blade

Tension pulley position

Refer to the details for [E.22]

in the error code table.

Adjust the tension and

height of the thread

take-up spring.

Adjust the sub tension.

Sharpen or replace the

fixed knife.

Adjust the tension of the

V beit using the tension

pulley.

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