10-7) When the fluorescent lamp (the interior lamp of the Refrigerator) is not on,
Since about 300 V/DC converted from the inputted power to INVERTER PCB is supplied,
replace when the power is OFF.
Information
1. Since voltage supplied to the fluorescent lamp is high-frequency, operation cannot be checked
using the generally used Volt-Ohm-Milliammeter (VOM).
2. On the replacement of the fluorescent lamp, the lamp does not come to be ON temporary.
So, check again after the replacement and 30 seconds after closing the door.
3. Connector is connected between R-DOOR S/W, voltage input terminal of Inverter PCB, and the lamp.
If there is any trouble with the lamp, at first check the contact fault.
Connector
(4PIN) inside the R-Room is
normally inserted?
START
Re-insertion of Connector
Filament of the lamp
is snapped?
Replacement of the lamp
R-DOOR S/W contact
is normal?
Replacement of INVERTER PCB
N
Y
Y
N
N
Only for information
(cannot be repaired)
N
Y
Fluorescent heater
is normal?
Y
Lamp Case of the upper side
of the Refrigerator
Check according to the method
in Reference No. 5)
Check method of DOOR S/W
Check and Repair of R-DOOR S/W
Caution
49
