Samsung RSE8KPAS Service Manual page 54

Troubleshooting
6-10) When the Dispenser Cover does not close
Note
1) When the Dispenser S/W is pressed after selecting the type of ice (CUBED or CRUSHED), the Geared Motor will operate
and the Dispenser Cover will be opened. When the button keeps on being pressed, ice comes out. If the Geared Motor does
not operate, check the Dispenser S/W first. Also, take out the Geared Motor and check its resistance at the both terminals.
When it is 0 ohm, it is shorted and must be replaced.
Start
Does it work when
the Dispenser S/W is pressed?
YES
Does it stop when it is open completely?
YES
Does it close in 5 sec after ice come out?
YES
The entire Cover Ice Route control
system is OK.
It operates with the Freezer door closed.
NO
Does Main MICOM Pin No.
58 on the MAIN PCB change from
5V to 0V when the Dispenser
S/W is pressed?
NO
Does Main MICOM Pin No.
62 change from 0V to 5V?
Does the voltage at
the both RY7B coil terminals
change from 12V to 0V?
Does the RY7B contact operate normally
(Open/Close)?
① Check Ice Transfer Motor
② Check Wiring of Ice Transfer Motor
Does Main MICOM Pin No.
40 & 41 becomes 0V/5V?
* The circuit is OK.
① Check mechanical interferences
54
NO
①
YES
②
YES
① Check & Replace MICOM on MAIN
YES YES
② Replace IC74
① Replace Relay RY7B
YES
① Replace Relay RY7B
YES
** Disconnect CN71 and check it
① Check Dispenser S/W (Defective S/W or
NO
② Check wiring between MAIN PCB and
YES
Check Dispenser S/W (Defective
S/W or Wiring)
Check wiring between MAIN PCB
and Dispenser
PCB
Wiring)
Dispenser