4-15) When The Room Lamp (Led) Does Not Light Up - Samsung RR39M7 Series Service Manual

TROUBLESHOOTING

4-15) When the Room Lamp (LED) does not light up

- 2 BOARD
Door & MICOM State
DOOR S/W MICOM(#8)
Close
Open
MICOM State
DOOR
Close
Open
Q711(F)
Micom CN75 #1,#2 Pin
0V(Low)
5V(High) 10~12V(High)
0V(Low)
5V(High)
F or R
#8
0V(Low)
5V(High)
0V(Low)
Start
DOOR S/W works
normal (Open/Close)
Yes
IC01 MICOM #62 Output
Voltage is normal
Yes
Voltage Output at Pin
CN75 #1,#2 is normal
Yes
Voltage Output at the
MAIN PCB Connector (CN75) is
normal (10~12V)
Yes
The LED Lamp is
connected properly
Yes
The LED Lamp is ok
Yes
Normal
89
No
Check & Replace REED S/W
& Magnet Ass'y
No
Replace / Repair PCB
No
Replace PCB
No
Check Connector Terminal /
Replace PCB
No
Check Connector Terminal
No
Replace LED LAMP