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8. ELECTRIC MECHANISM
KE-430B, 430C series
180
Error status #2 Error code appears on the display window when the power is turned on.
Probable causes Check/ repair/ adjust Parts to be replaced
10. Short circuit in a solenoid or
feed motor (malfunction of
main circuit board) occurs or
relay on the power supply
circuit board does not
function when error code
E-F0 appears on the display
window.
([E.F0] KE-436B, 436C)
a. See #9-3.
b. See #18-2.
c. Power supply circuit board is defective if
the error still appears after replacement
of the main circuit board.
d. See #19-2.
Presser solenoid and
main circuit board
Thread trimming sole-
noid and main circuit
board
Main circuit board and
power supply circuit
board
Thread take-up solenoid
11. Abnormal electricity supply
is detected when error code
E-F2 appears on the display
window.
([E.F2] KE-436B, 436C)
• Power supply circuit board defective if the
error still appears after replacement of the
main circuit board.
Main circuit board and
power supply circuit
board
12. The model select connector
is not inserted when error
code E-13 appears on the
display window.
([E.13] KE-436B, 436C)
a. Insert the short pin harness that is
connected to the encoder harness into
connector P3 (SELECT) on the main
circuit board.
b. Check if there is a problem with the
crimping of the short pin harness.
Model select connector
Error status #3 No switches on the operation panel are not activated.
Probable causes Check/ repair/ adjust Parts to be replaced
• Check that P8 (PANEL) connectors of the
main circuit board and P1 (PANEL)
connectors of the panel circuit board are
plugged in.
Panel circuit board
Panel cord
1. Panel PCB defective
<KE-436B, 436C>
• Check that P20 (RSPORT) connectors of
the main circuit board and P5 (DRV)
connectors of the panel circuit board are
plugged in.
Panel circuit board
Error status #4 If the R/W switch is pressed, the indicator lamp is not lit and an error code appears.
(KE-436B, 436C only)
Probable causes Check/ repair/ adjust Parts to be replaced
1. With error code [E.40], the
cord or the floppy disk drive
(FDD) is defective.
a. Check the connections and pins between
connector P1 on the panel PCB and the
FDD, and between connectors CH1 and
CH2 on the panel PCB and the FDD.
b. Replace the floppy disk drive.
FDD harness
Floppy disk drive
Error status #5 After a few seconds after the R/W switch is pressed, an error code appears.
(KE-436B, 436C only)
Probable causes Check/ repair/ adjust Parts to be replaced
1. With error code [E.40], a
floppy disk is not inserted.
• When a floppy disk is inserted into the
FDD, check the sound of the motor.
Drive device
2. With error code [E.41] or
[E.4F], the floppy disk is
defective.
• When error code [E.40], [E.41], or [E.4F]
appears, insert other floppy disk into the
FDD.
If the FDD reads the floppy disk, the
original disk is defective.
Floppy
3. Panel circuit board defective
Panel circuit board