Samsung RF28HMEDBSR Service Manual Page 94

French door refrigerator.
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TROUBLESHOOTING
4-2-9. When the Panel PBA does not operate normally
① When the entire or a certain section of the Panel PCB does not light up
- There is a MICOM embedded in the Panel PCB. So, take care when doing repairs. And, except the Solder
Touch, replace the PCB.
Refer to the Circuit Diagram of
this manual or the Wiring Diagram
attached at the back of the unit.
② When the Panel PCB buttons do not work
Since all Touch is used for the Panel PCB Switch, be sure to turn off the unit and turn it on again after
doing a repair. [It is to adjust the sensitivity of the Touch Panel.]
Start
Is the connetor
insertion of freezer upper-hinge
nomal?
MAIN PCB
Connector (CN50) is inserted
normally?
The Panel
PCB Connecter is connected
properly?
When
replacing Panel-PCB,
it lights up?
① Check the Dispenser and the Top Cover Hinge Connectors.
Check the Wire Cut and the Wire Short.
② Check the wire connection between the Fridge Top
Cabinet and the Main PCB Connector.
Check the Wire Cut and the Wire Short.
※ When it keeps troubling after check with the above procedures
[Check after turning off the unit and turning it on again]
Buttons get stuck
being pressed down?
Buttons get stuck
being pressed down?
Buttons get stuck
being pressed down?
① Check the Dispenser and the Top Cover Hinge Connectors.
Check the Wire Cut and the Wire Short.
② Check the wire connection at the Fridge Top Cabinet.
Check the Wire Cut and the Wire Short.
③ Check Short/Open at the Panel Communication & the Power
Supply Circuit of the Main PCB
No
Yes
No
Yes
No
Yes
Yes
NO
Yes
NO
Yes
NO
Yes
NO
94
Insert Connector again Repair the contact
trouble
Insert MAIN PCB Connector again
Insert Connector again Repair the contact
trouble
Replace Panel PCB
Re-assemble PCB ASS'Y or clear the restriction
Re-assemble PCB ASS'Y or clear the restriction
Replace Panel PCB

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