If Panel Pcb Does Not Work Normally; If Panel Pcb Does Not Work Normally - Samsung RFG297AARS Service Manual

TROUBLESHOOTING

4-2-9. If Panel PCB does not work normally

① When lighting of Panel PCB is disabled or only some LED Lamp are disabled
Be careful to repair because display of this model is installed in the MICOM of internal PCB.
It is recommended to replace PCB MAIN after checking except specified solder touch.
Refer to the electronic
circuit diagram in the
manual or circuit diagram
on the back side of the
appliance
② If Panel PCB KEY is not selected
※ If it is not repaired with the above basic checking method
①Check the wiring betwwen Dispenser part and Uper Hinge Panel- disconnection, short between wires.
②Check the wiring of the fresh food compartment upper cabinet - disconnection, short between wires.
③Check the short/open of the panel communication and power supply circuit in MAIN PCB.
Start
Is the connector of
upper hinge cover
inserted correctly?
Is MAIN PCB
connector (CN50)
inserted correctly?
Is Upper Hinge
Panel PCB connector
inserted correctly?
Does lighting operate
normally after replacing
Panel-PCB?
① Check the wiring between Dispenser part and Upper Hinge Panel - disconnection, short between wires
② Check the wiring between fresh food compartment upper cabinet and MAIN PCB - disconnection, short between wires
Are one or more keys
pressed continuously?
Is the PCB system
still operated by separating
of the mechanism?
Does the lighting operate
normally after replacing the
Panel-PCB ?
82
Reinsert connector,
Repair bad contact
Reinsert connector of MAIN PCB
Reinsert connector,
Repair bad contact
Panel PCB itself has trouble.
Reassemble the PCB ASS'Y /
Enforce the cancelation of pressed keys
Reassemble the PCB ASS'Y /
Enforce the cancelation of pressed keys
Panel PCB itself has trouble.