7-4 Troubleshooting
7-4-1 Troubleshooting of the Power Supply Board
If any of the following occurs, the PCB is defective. Replace the PCB.
1. Pressing a selection button illuminates the LED display, but the buzzer does not sound.
2. Pressing a selection button sounds the buzzer, but does not illuminate the LED.
3. Pressing a selection button illuminates the wrong LED.
Insert the power plug into the receptacle and press the Power button. If the stored parameters do not display,
check the following :
7-4-2 Keyboard
¥When pressing a selection button, the buzzer does not sound, or the LED does not display.
7-4
WASHING MACHINE
7. Troubleshooting
YES
YES
NO
YES
YES
NO
YES
NO
NO
The power does not turn on.
Connect the power plug securely.
Replace the fuse.
Check the harness.
Replace the transformer.
Is the power
plug connected?
Is the fuse blown?
Is the
connection of the power
trans harness OK?
Replace the PCB assembly.
Is the
output of secondary
side of power transformer
AC 11V(Red)?
YES
YES
YES
NO
NO
There is no buzzer sound, and the
LED display does not turn on.
Turn the power switch on.
Replace the selection switch (tact switch).
Is the power
switch turned on?
Are the contacts of the
selection switch OK?
Replace the PCB assembly.