Samsung RS257BABB Service Manual page 55

Diagnostics
11-11) If Crushed Ice/Cubed Ice doesn't work properly:
S t a r t
Is ice ejected?
YES
What's your selection
between crushed and cubed?
cubed ice
Is the cube ice ejected sufficiently?
NO
Does MICOM No. 36 turn
0V if pressing Ice S/W?
YES
Does IC3 No. 16 turn 0V if
pressing Ice S/W?
YES
Measure both contact
termi n al s of RY76 after the
separati o n of CN70, CN71
connectors.
Does the
contact shelf of RY76 relay turn 0Ϊif
pressing ICE S/W?
YES
Main PCB is normal operated.
- - - Necessary to check other sections.
1) Check the wire between terminals of the AUGER motor
and main PCB.
2) Failure of cube solenoid for itself, or bad contact of the
connector.
The condition of close on operation
is subject to the freezer door.
NO
Does ice in the ice tray exist ?
YES
1) Check the ice-ejector S/W.
2) Check the door S/W.
3) Check the ice moving motor.
4) Check the cut of wire in the Ice
moving Motor section.
Crushed ice
Cubed ice extracted
Normal operation
NO
Failure of Main PCB has. –Exchange it.
NO
Main PCB(IC3) has failure –
exchange it.
NO
Exchange of Main PCB(RY77
relay).
55
NO
Do you see Ice Stop on the digital panel?
YES
Cancel Ice Stop, select
cubed/crushed ice.
Is the Crushed ice extracted
sufficiently?
NO
Does MICOM No. 36 turn 0V if
pressing Ice S/W?
NO
Does the voltage
of IC3 No. 16 turn 0V even in the ice
S/W OFF?
NO
Measure both terminals of RY76
contact after the separation of CN70,
CN71 connectors.
Does the contact
shelf of RY76 relay turn 0Ϊ even in the
power OFF?
NO
Main PCB is normal.
- - - Check other sections.
1) Check the wire between the
AUGER motor and main
PCB.
NO
1) Check the water hose for folding or
fastening.
2) Check the ice-water-way and
solenoid value
3) Check the wires of ice-maker.
YES
Normal operation
YES
Failure of Main PCB and exchange it.
YES
Failure of Main PCB(IC3) and
exchange it.
YES
Failure of Main PCB – exchange.
(The contact terminal of RY76
relay short failure.)