Samsung RM255BABB Training Manual page 70

DIAGNOSTIC
6-9) If Ice Cubed or/and Ice Crushed don't work normally
Start
Does ice come out when drawing ice?
What is the ice status on the panel Display?
Do ice cubed come out when
drawing ice?
Does MAIN MICOM No. 14
change to 0V when pressing ice s/w?
Does MAIN MICOM No. 17 change to
0V when pressing and holding ice s/w?
Measure both terminals of RY7C
contact point after disconnecting CN72
and CN73 connectors.
Is the contact terminal of RY7E
relay 0 Ω when pressing ice s/w?
Normal Main PCB
- Need to check other sections.
Check the wire between AUGER MOTOR and MAIN PCB.
Failure of CUBE MOTOR itself or connecting connector
contact failure.
It operates with the Freezer door closed.
NO
YES
Is there ice in the ice storage bin?
Check point of contact of ice drawing S/W
Check point of contact of door S/W.
Check point of contact of ice transfer motor.
Check poi n t of contact for wi r i n g of the i c e transfer motor
crushed ice
cubed ice
YES
NO
Normal working condition
NO
YES
- Check ice s/w has failure itself.
- Check connected.
- Main PCB failure: Replace it.
NO
YES
Main PCB failure: Replace it
(IC74 failure).
NO
YES
- RY7E relay failure
- Main PCB failure: Replace it.
NO
YES
Does crushed ice come
out when pulling ice out?
Does Main MICOM No. 14 change
to 0V when pressing ice s/w?
Di d cube motor move to i c e crushed
l o cati o n? (Load MICOM No. 28 i s 5V?)
Does IC74 No. 17 change to 0V
when pressing and holding ice s/w?
Is RY7E RELAY contact terminal
0Ω even when power off?
Normal Main PCB
- Need to check the other sections.
Check the wire between AUGER MOTOR and MAIN PCB.
Failure of CUBE MOTOR itself connector contact failure.
69 69
Is the ice selection on panel
for ice off?
YES
Release the icing stop Select ice
ice cubed/crushed
1) Check water supply hose. - bent or turned off.
2) Check water supply parts for icing solenoid check
3) Check icemaker wire.
YES
No
Normal Working Condition
No
YES
Main PCB failure: Replace it.
No
- When LOAD MICOM No. 28 i s 0V conti n uousl y ,
CUBE MOTOR and IC74 shoul d be checked.
YES
- Check CUBE MOTOR S/W.
- Check CN73,CN40 WIRE.
No
Main PCB failure: Replace it (IC74 Failure).
YES
Measure the both termi n al s of RY7E contact poi n t
after di s connecti n g CN72 and CN73 connectors.
No
Main PCB failure: Replace it.
YES
(RY7E Relay contact terminal short failure)
NO