4-2-11) When Panel Pcb Operates Abnormally - Samsung RL60GG Series Service Manual

4. TROUBLESHOOTING

4-2-11) When PANEL PCB operates abnormally

① When PANEL PCB does not light up or partially does
Refer to Circuit Diagram
attached in this manual and
check the circuit diagram
attached on the back of the
unit.
When PANEL KEY is
not selected
② When Panel PCB buttons are not working
※ When the trouble is being remained after the above,
Start
The connector at the
Freezer upper hinge cover
is inserted properly.
Yes
MAIN PCB Connector
(CN52, CN51) is
inserted properly
Yes
DOOR PANEL PCB
Connector is inserted
properly
Yes
It lights up when
PANEL-PCB is being
replaced
No
① Check Fridge Door Wiring - Short or Open Wire
② Check CABI Upper Wiring - Short or Open Wire
③ Check Short/Open at MAIN PCB Panel Lamp Circuit
There are no buttons
being pressed
continuously.
Yes
The trouble continues
with PCB being
removed
Yes
When PANEL-PCB is
being replaced, it
works normal.
No
① Check Fridge Door Wire - Short or Open Wire
② Check CABI Upper Wiring - Short or Open Wire
③ Check Short/Open at MAIN PCB Panel Communication/Power-Supply Circuit
65
No
Re-insert Connector,
Correct the defective contact
No
Re-insert MAIN PCB Connector
No
Re-insert Connector,
Correct the defective contact
Yes
Defective PANEL PCB
Being Pressed
Re-assemble PCB ASS'Y, Correct
any restrictions on the buttons
When being separated, it works
Re-assemble PCB ASS'Y, Correct
any restrictions on the buttons
Yes
Defective PANEL PCB