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DIAGNOSTIC
6-6) If the panel PCB is not working normally:
1) Where all lights of the panel PCB are disabled, or only some lamps are disabled.
2) Where the Panel PCB key isn’t selected:
- The basic check way : Please follow the basic check method, and then if it doesn`t work proceed as follows.
It is a care.
Is the connector on upper
hinge cover of freezer inserted
normally?
Start
Reinsert the connector.
Troubleshoot contact failure.
Is the main PCB
connector(CN50) inserted
normally?
Reinsert the connector into the
main PCB.
Is the connector on door panel
PCB inserted normally?
Reinsert the connector.
Troubleshoot contact failure.
1. Check the door wire of freezer – breaking of wire, short between wires.
2. Check the CABI wire of freezer – breaking of wire, short between wires.
3. Check the panel lighting circuit section within the main PCB for short or open.
1. Check door wire of freezer – check breaking of wire, short between wires.
2. Check the CABI wire of freezer – check breaking of wire, short between wires.
3.
Check for Short/Open of the Panel Communication / Power Supply parts of main pcb.
NO
NO
YES
YES
NO
Panel PCB itself has trouble.
YES
YES
Do lights operate normally
when replacing panel PCB?
NO
NO
Recheck after releasing the locking
function.
YES
Is the locking lamp lit?
NO
Reassemble the PCB assy/Enforce
the cancellation of pressed keys.
Pressed
Are more than one key pressed
continuously?
YES
Reassemble the PCB asse/Enforce
the cancellation of pressed keys.
Operating when
disassembled
Is the PCB system
still operating even though it is
separated?
NO
Panel PCB has trouble for in itself.
YES
Does lighting operated normally
when replacing panel-PCB?
See the electric circuit
diagram or connection
diagram attached to the
backside of refrigerator.
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