Samsung RF23R6 Series Service Manual page 62

TROUBLESHOOTING
※ R Self-diagnostics check list
LED
F R
Ice Maker (Fridge)
Communication
Main ↔ Inverter
Communication
Communication
Dispenser Panel
Communication
Communication
Fridge Ice Duct
Item Diagnostic method
After changing the Ice Maker(R), plug
the refrigerator power code again,
Function Error
and check the operation.
Ice Room Fam The voltage of MAIN PCB CN20-"22"
↔ "24: shall be between 7V~12V
Error
Actually, If there is not a problem, it is
Main ↔ Panel
desirable to replace Main and Panel
PCB With the oscilloscope after a
Error
cable problem confirming.
Actually, If there is not a problem,
it is desirable to replace Main and
Inverter PCB With the oscilloscope
Error
after a cable problem confirming.
IO Expander
It is desirable to replace Main PBA.
Error
Actually, If there is not a problem,
Main ↔
it is desirable to replace Main and
Dispenser Panel PCB With the
oscilloscope after a cable problem
Error
confirming.
After separating MAIN PCB CN90
wire from PCB, resistance value
Main ↔
between CN90-"1" ↔ "5" shall be
Wifi module
63(230) ohm ± 7%. (Resistance value
is varied by input power) 0 ohm :
Error
heater short, ∞ ohm : wire/bimetal
open (Must power off)
After separating MAIN PCB CN20
wire from PCB, resistance value
between CN20-"21" ↔ "23" shall be
63(230) ohm ± 7%. (Resistance value
Heater Error
is varied by input power)
0 ohm : heater short, ∞ ohm : wire/
bimetal open (Must power off)
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