Troubleshooting By Condition; Lcd Display Does Not Appear - Samsung MWR-WE10 Service Manual

4-2 Troubleshooting by Condition

4-2-1 LCD Display Does Not Appear

Is the connection of the
ASS'Y PBA (DB93-11243A)
power cable normal?
Are the voltages for
both the terminals of BD01
input side12V?
Is the IC03 (7805) output terminal 5V?
Is the LCD connector
properly connected?
Change of LCD modules
Is it working normally after the change?
4-3
Start
Yes
Yes
Yes
Yes
Yes
End
Check the connection status of the power
No
cable (V1, V2) with ASS'Y PBA (DB93-11243A).
No
Check the power of the indoor unit.
GND
12V(-12V)
No
Change 5V REGULATOR troubled ASS'Y PBA
GND
5V
No
No
Change PCB_ASS'Y (DB93-11243A)
(DB93-11243A).
Change LCD WIRE
Samsung Electronics