57
TROUBLESHOOTING
4-2-9. If refrigerator ROOM Lamp does not light up (F,R - Same condition) - LED
1. When you replace the lamp of freezer/fridge, please power OFF
[Explain cold-storage room lamp on the basis of.]
①
When lightning of Panel PCB is disabled
Start
No
Yes
Yes
No
Yes
No
No
Is the Door switch
contact normal?
Is the output voltage of
IC71 normal?
Normal / Re-check
Is the output voltage
of IC10 MICOM #32
Normal?
Is the main PCB connector(CN71)
insertion status normal?
Replace PCB/ Repair the IC71
Re-insert the connector
Yes
No
Does the main PCB connector(CN71)
Output normal?(11~13V)
Check the connector terminal
Replace PCB
Yes
No
Is the LED Lamp connected
Properly?
Check the connector terminal
Yes
Yes
No
Is the LED Lamp normal?
Replace LED Lamp
Replace PCB
Replace Door S/W
Door & MICOM State
Door
Close
Open
F
MICOM(#60)
R
MICOM(#52)
0V(Low)
5V(High)
0V(Low)
5V(High)
MICOM(LAMP) State
Door
Close
Open
F
MICOM(#31)
R
MICOM(#32)
0V(Low)
5V(High)
0V(Low)
5V(High)
IC71 State
MICOM
(#31/ #32)
IC71 output
(#15/ #16)
0V(Low)
5V(High)
12V(High)
0V(Low)
☞
Checking method of Door Switch voltage
-. PCB common Ground REG1 Heater Sink and
CN30-"2"(Brown) : measure the voltage (R Door Switch)
CN30-"1"(Black) : measure the voltage (F Door Switch)
=> See the R DOOR Switch at the following picture
CLOSE
OPEN
Common PCB Ground
REG1 Heater Sink
☞
Output voltage checking method
-. PCB common Ground REG1 Heater Sink and
CN71-"5"(Pink) : measure the voltage (F LED Lamp)
CN71-"3"(Blue) : measure the voltage (R LED Lamp)
=> Picture is R LED Lamp operation below.
CLOSE
OPEN
Common PCB Ground
REG1 Heater Sink
Содержание RF18 Series
Страница 16: ... AXIAL FLOW FAN AXIAL FLOW FAN 16 PRODUCT SPECIFICATIONS 2 8 Cooling Air Circulation ...
Страница 61: ...87 6 2 Connector Layout with part position Main Board PCB DIAGRAM ...
Страница 62: ...87 6 2 Connector Layout with part position Main Board RF18 RF20 PCB DIAGRAM 14 12V ...
Страница 63: ...88 7 Wiring Diagram RF18 RF20 RF195 RF197 RF215 RF217 ...
Страница 64: ...89 8 1 Refrigerator Block Diagram 8 Schematic Diagram ...
Страница 65: ...90 SchematicDiagram 8 2 Main ...