ASCON Service Guide Book
45
6.9 WMF U1.4 to L2EF Conversion
1. The U1.4 PCB can be replaced directly by the new L2EF PCB because no modification needs to be
done and the connector pins for both stepper motor and fan motor is still the same as U1.4.
3. However, the display panel (IR receiver) and On/Off switch board pins on PCB for both U1.4 and
L2EF is not compatible with each other; therefore it is unable to change only the display panel or
On/Off switch board from U1.4 to L2EF or L2EF to U1.4.
5. For example, if the display panel for U1.4 is malfunction, it cannot be replaced by the display panel
from L2EF as the connector pins is already different.
Please refer to the following pictures for a clear description of connector pins.
ON/ OFF
switch board
Display Panel
ON/ OFF switch
U1.4 PCB
L2EF PCB
comes with
display panel
and ON/OFF
switch board
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