Samsung RFG297AABP - If ICE Water is Not Supplied

85
TROUBLESHOOTING
When controlling the regrigerator light with Regulator(12V) : LED LAMP
→ Applying only to the FF compartment.
* If the Vegetable Lamp does not work properly, check the FF compartment LED Lamp because it is
connected with the FF compartment LED Lamp in parallel. Refer to the circuit diagram to repair.
1) LED LAMP
Start
Check/Replace REED
S/W, Magnet ASS’Y
Does the DOOR S/W
sense properly?
(Open/Close)
No
Replace/Repair the
PCB
No
Replace/Repair the
PCB Repair IC77
No
Check the connector terminal
Replace PCB
No
Check the connector
terminal
No
Replace LED LAMP
Normal
☞ Output Voltage Checking Method
- Common Ground REG1 Heater Sink in PCB and
1) Measuring IC76 voltage
☞ Door Switch voltage Checking Method
- Measuring common Ground REG1 Heater Sink in PCB
and CN30-”2”(Purple) (R Door Switch)
Typical PCB Ground REG1 Heater Sink
LED Lamp ON LED Lamp OFF
Close
Open
Door & MICOM State
MICOM(#82)
Door
Right and Left
0V(Low)Close
Open
5V(High)
No
Check the wire
Re-insert the connector
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Is the output voltage
of IC01 MICOM #119
normal?
Is the output voltage
of IC76 normal?
Is the MAIN PCB
connector(CN78) inserted
properly?
Does the MAIN PCB
connector(CN78) output
properly? (11~13V)
Is the LED LAMP connected
properly?
Is the LED LAMP normal?
MICOM State
Door(Right and Left) MICOM (#119)
Close 0V (Low)
Open 5V (High)
IC76 State
Micom IC76 output
0V (Low) 0V (Low)
5V (High) 11~13V (High)