Samsung RT53 - When the Room Lamp (LED) does not light up

Total Ver.02
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epalarcon9
ninguno
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Hotpoint,Mba
4033 Cv
LG_MULTI_F_3828A20097W_1[1]
Samsung
Refrigerador
346481235-
WD856UHSAWQ-



0
TROUBLESHOOTING
4-2-8. When the Room Lamp (LED) does
not light up
DOOR S/W works
normal (Open/Close)
IC10 MICOM #43 Output
Voltage is normal
Voltag
e Output at
Pin
#2 & #4 (CN76) is
normal
Voltage Output at the
MAIN PCB Connector
(CN76) is normal (10~12V)
The LED Lamp is
connected properly
The LED Lamp is ok
Start
Check & Replace DOOR S/W
Replace / Repair PCB
Replace PCB
Check Connector Terminal /
Replace PCB
Check Connector Terminal
Replace LED LAMP
Normal
No
No
No
No
No
No
Y
es
Y
es
Y
es
Y
es
Y
es
Y
es
Door & MICOM State
DOOR S/W
MICOM(#22)
Fridge
Close
0V
Open
5V
MICOM State
Door (Fridge)
R
#43
Close
0V
Open
5V
Q712(R)
Micom
CN76 2,4Pin
0V(Low)
0V(Low)
5V(High)
10~12V(High)