8. ELECTRIC MECHANISM

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

a. See #9-3.

Presser

solenoid and

feed motor (malfunction

of

b. See #18-2.

main circuit board

main circuit board) occurs or

c. Power supply circuit board is defective if

Thread

trimming

sole-

relay on the power supply

the error still appears after replacement

noid and main

circuit

circuit

board

does

not

of the main circuit board.

board

 

 

function

when

error

code

d. See #19-2.

Main circuit board and

E-F0 appears on the display

 

power

supply

circuit

window.

 

 

 

 

 

board

 

 

([E.F0] KE-436B, 436C)

 

 

Thread take-up solenoid

11. Abnormal electricity

supply

• Power supply circuit board defective if the

Main circuit board and

is detected when error code

error still appears after replacement of the

power

supply

circuit

E-F2 appears on the display

main circuit board.

board

 

 

window.

 

 

 

 

 

 

 

 

([E.F2] KE-436B, 436C)

 

 

 

 

 

12. The model select connector

a. Insert the short pin harness that is

Model select connector

is not inserted when error

connected to the encoder harness into

 

 

 

code E-13 appears on the

connector P3 (SELECT) on the main

 

 

 

display window.

 

 

 

circuit board.

 

 

 

([E.13] KE-436B, 436C)

 

b. Check if there is a problem with the

 

 

 

 

 

 

 

 

crimping of the short pin harness.

 

 

 

 

 

 

 

 

Error status

#3 No switches on the operation panel are not activated.

 

 

 

 

 

 

 

 

Probable causes

 

 

Check/ repair/ adjust

Parts to be replaced

1. Panel PCB defective

 

 

• Check that P8 (PANEL) connectors of the

Panel circuit board

 

 

 

 

 

main circuit board and P1 (PANEL)

Panel cord

 

 

 

 

 

 

connectors of the panel circuit board are

 

 

 

 

 

 

 

 

plugged in.

 

 

 

 

 

 

 

 

<KE-436B, 436C>

Panel circuit board

 

 

 

 

 

• Check that P20 (RSPORT) connectors of

 

 

 

 

 

 

 

 

the main circuit board and P5 (DRV)

 

 

 

 

 

 

 

 

connectors of the panel circuit board are

 

 

 

 

 

 

 

 

plugged in.

 

 

 

 

 

 

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

a. Check the connections and pins between

FDD harness

 

cord or the floppy disk drive

connector P1 on the panel PCB and the

 

 

 

(FDD) is defective.

 

 

FDD, and between connectors CH1 and

 

 

 

 

 

 

 

 

CH2 on the panel PCB and the FDD.

 

 

 

 

 

 

 

 

b. Replace the floppy disk drive.

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

• When a floppy disk is inserted into the

Drive device

 

floppy disk is not inserted.

 

FDD, check the sound of the motor.

 

 

 

2. With error code [E.41] or

• When error code [E.40], [E.41], or [E.4F]

Floppy

 

 

[E.4F], the floppy disk is

appears, insert other floppy disk into the

 

 

 

defective.

 

 

 

 

FDD.

 

 

 

 

 

 

 

 

If the FDD reads the floppy disk, the

 

 

 

 

 

 

 

 

original disk is defective.

 

 

 

3. Panel circuit board defective

 

Panel circuit board

 

 

 

 

 

 

 

 

 

KE-430B, 430C series

180