Brother KE-430F Service Manual page 161

Error status #2 Error code appears on the display when the power is turned on.
Probable causes
1. If "E025" or "E035" is displayed,
the foot switch is still depressed.
2. If "E055" is displayed, there is a
malfunction of the machine head
switch.
3. If "E065" is displayed, one of the
keys on the operation panel is still
depressed.
4. If "E131" is displayed, there is a
poor connection
synchronizer.
5. If "E400" and "E401" is displayed,
there is a connection
between the main PCB , motor
PCB and the panel PCB.
6. If "E450" or "E452" is displayed,
the machine head memory cannot
be recognized.
7. If "E700" is displayed, the power
supply voltage is abnormally high.
8. If "E705" is displayed, the power
supply voltage is abnormally low.
a. Check if the foot switch is still depressed.
b. Check if there is a short-circuit in the harness.
c. Check if connector P12 (PEDAL) is connected
to the motor PCB.
d. Reset the depression stroke for the foot switch
while referring to "11-22. Standard setting for
depression stroke (foot switch)".
* For a 2-pedal foot switch, the connector for the
main PCB will be P15 (PEDAL).
a. Check if the machine head switch is off.
b. Check if there is a broken wire in the harness.
c. Check if connector P14 (HEAD-SW) is
connected to the main PCB.
a. Check that there is no incorrect sensitivity
when the surface of the panel sheet and the
keys are pressed.
b. Check
connected to the motor PCB, and that
connector P1 (MAIN) is connected to the
panel PCB.
Check that connector P11 (RESOLVER) and P1
of the (MT-ENC) is connected to the motor PCB, and
that connector P6 (MT-ENC) is connected to the
main PCB.
a. Check LD3 (green) on the main PCB.
fault OK if illuminated.
b. Check LD3 (green) on the motor PCB.
OK if illuminated.
c. Check
connected to the main PCB, and that
connector P2 (MAIN) is connected to the
motor PCB.
d. Check
connected to the motor PCB, and that
connector P1 (MAIN) is connected to the
panel PCB.
e. Check if there is a broken wire in the harness.
a. Check if connector P3 (HEAD-M) is connected
to the main PCB.
b. Check if there is a broken wire in the harness.
a. Check that the power supply voltage at the
mains is at the specification voltage plus or
minus 10%.
b. See #1-2.
a. Check that the power supply voltage at the
mains is at the specification voltage plus or
minus 10%.
b. See #1-2.
KE-430F, BE-438F
Check/ repair/ adjust
that connector P3 (PANEL)
that connector P5 (MOTOR)
that connector P3 (PANEL)
15. ELECTRIC MECHANISM
Parts to be replaced
Treadle unit
2-pedal foot switch assembly
Switch assembly machine
head
Operation panel assembly
Panel PCB assembly
Panel harness
is
Main PCB assembly
Motor PCB assembly
Panel PCB assembly
Connection harness
is Panel harness
is
151