6-9) When Refrigerator Room Lamp Does Not Light Up - Samsung RF18A Series Service Manual

CHECK THE INSTALLATION STATUS

6-9) When refrigerator ROOM Lamp does not light up

When controlling the refrigerator light with Regulator(12V) : LED LAMP
→ Applying to the F/R Room compartment (Option)
* If the Vegetable Lamp does not work properly, check the R compartment LED Lamp because it is connected with the R
compartment LED Lamp in parallel. Refer to the circuit diagram to repair.
Door & MICOM State
MICOM(#5)
Door
Right and Left
Close 0V (Low)
Open 5V (High)
MICOM State
FF
Door
#5
Close 0V (Low)
Open 5V (High)
Q708(R)/Q706(F)
MICOM Q708(R)/Q706(F)
0V (Low) 0V(Low)
5V (High) 11~12V(High)
1) Measuring output voltage
- F LED : CN51 "24"(ORG) and CN51 "26"(W/GRY)
- R LED : CN51 "22"(GRN) and CN51 "13"(GRY)
R LED Lamp ON
This document cannot be used without Samsung's authorization.
FZ
#1
0V (Low)
5V (High)
R LED Lamp OFF
Start
Does the
DOOR S/W sense properly?
(Open/Close)
Yes
Is the output
voltage of MIC01 MICOM #5
normal?
Yes
Is the output
voltage normal?
Yes
Is the MAIN
PCB connector (CN40, CN60)inserted
properly?
Yes
Does the MAIN
PCB connector(CN51) output
properly?(11~12V)
Yes
Is the LED LAMP
connected properly?
Yes
Is the LED LAMP no mal?
Yes
Normal
- F Door : CN51 "1"(ORG) and CN51 "3"(FLAT_WHT)
- R Door : CN51 "10"(BLK) and CN51 "13"(GRY)
Close
98
No
Check/Replace REED S/W,
Magnet ASS`Y.
No
Replace/Repair the PCB.
No
Replace/Rep air the PCB.
No
Check the wire
Re-insert the connector.
No
Check the connector terminal
Replace PCB.
No
Check the connector terminal.
No
Replace LED LAMP.
Open
Repair.
PIN Number