Brother BAS-340 - Page 81

NO. IN CHAPTER 8
PROBABLE
REPLACEMENT
REF.
FLOWCHART AND
CHECK I ADJUSTMENT I REPAIR
CAUSES
PARTS
PAGE
ERROR STATUS
#11
1. Work clamp
Refer to #4, 3.
Rapid feed can not
switch
be used during the
(2-stage
test.
switch)
defective
#12
1. Feeding
Adjust the feeding
mechanism to move
The machine does
mechanism
smoothly by hand.
not opoerate as
not
programmed
adjusted.
during the test.
2.
Refer to #6, 1, 3 to 6.
#13
1. Cable
Check continuity between connector P11 of
The machine does
defective
the control PCB and P4 of the motor PCB.
not opoerate for
Check the terminals between connector P3 of
sewing.
the motor PCB and the motor, for looseness.
2. Control PCB If the error code No.2 does not appear on the
Control PCB 57
defective
ERROR indicator, check voltages on the
control PCB.
3. Power If the error code No.2 appears on the ERROR Motor PCB
module indicator and the fuse No.1 is blown, the Fuse No.1 (SA,
56
short-
power module is short-circuited.
FB}
circuited
#14
1.Synchronizer
(a)
Check if connector P8 of the control PCB Synchronizer
The
machine or its cord
and connectors J2 and P2 of the control assembly
operates at high defective
box are correctly connected.
If not,
speed and then
correct the connections.
stops
suddenly
(b)
Replace the synchronizer.
while displaying
an error code. 2. Abnormal
Refer to #7-2.
voltage
(Error No. 9}
#15
1.Synchronizer
Refer to #14.
The
machine
or its cord NOTE: If the machine is placed in this error
b
operates but the
defective
status, the test operation wi II be
work clamp does
normally performed.
not.
#16
1.Synchronizer
Refer to # 15.
The thread cannot
or its cord
be cut.
defective
2. Control PCB
(a)*Referring to 2-3 (p 57), measure each
Control PCB
defective
solenoid's voltage.
If the indicator does
not oscillate, the control PCB is defective.
57
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From the library of: Superior Sewing Machine & Supply LLC