Brother BAS-342G PS, Руководство по обслуживанию

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8. ELECTRICAL MECHANISM
132 BAS-342G
Problem #17 An error code is displayed after the sewing machine operates.
Cause Inspection/Remedy/Adjustment
Replacement if a
malfunction
1. If [E120], [E121] or [E130] is
displayed after the sewing machine
operates, there is a malfunction of
the synchronizer, interference is
causing operating problems, or the
sewing machine is incorrectly
adjusted. 1
）
Check that connector P4 (UVW) is inserted
into the power supply motor P.C. board and
that the synchronizer is connected.
2
）
Check the synchronizer input while referring to
“2-7. Input checking method”.
OK if the signal turns on and off.
3
）
Turn the pulley by hand and check that it turns
smoothly.
4
）
Check that connector P17 (M_MOTOR) is
inserted into the main P.C. board and that
connector P6 (MAIN) is inserted into the
power supply motor P.C. board.
5
）
Check the harness between connector P17
(M_MOTOR) of the main P.C. board and
connector P6 (MAIN) of the power supply
motor P.C. board.
6
）
Check that the ground wire is connected to a
secure ground and that there is no equipment
nearby that is generating strong electrical
interference.
7
）
If [E121] is displayed when the sewing
machine stops:
•
Check if the thread trimming solenoid is
operating.
•
Adjust the thread trimming mechanism.
Motor assembly CCD-430D
2. If [E150] is displayed after the
sewing machine operates, the
motor is abnormally overheating.
1
）
Turn off the power and let the sewing machine
stand for 30 minutes.
2
）
Turn the power back on; OK if operation is
normal.
3
）
If the area around the motor is not hot, carry
out the steps for [E121].
Avoid repeated sewing of sewing data that is less
than 15 stitches.
Problem #18 Sewing is incorrect.
Cause Inspection/Remedy/Adjustment
Replacement if a
malfunction
1. Malfunction of synchronizer
Refer to inspection #17.
2. If uneven seams occur, there is a
malfunction of the pulse motor or
the mechanism is incorrectly
adjusted.
1
）
Refer to inspection #7-3 or #8-3.
2
）
If uneven seams occur because there is
insufficient air pressure for the work clamp,
adjust the work clamp pressure while referring
to “6-13-1. Adjusting the lift of the work clamp
arm assembly.”
3
）
If there is play in the feed mechanism, adjust
the feed mechanism.