If Cover Ice Route Motor(Geard Motor) Is Not Working Normally - Samsung RF28R7201 AA Series Service Manual

4-2-14. If Cover Ice Route Motor(Geard Motor) is not working normally

Caution
1. When replacing the Cover Ice Motor, pull out the plug to avoid an electric shock.
2. Be careful! When disassemble the Cover Ice Motor, spring can jumped out and may cause personal injury.
3. Motor will rotate continuously when the Motor Switch is not sensed.
☞ Checking Mehod of Cover Ice Route Motor Resistance
(Make sure to work after Power Off) the voltage of Resistance is
variable according to the input voltage.
CN71-"1"(BLU) ↔ CN71_1-"5"(BLK)
** 0Ω: Short trouble / Ω∞: Open trouble
When the MOTOR rotates.
Operating Condition of Dispenser Open/Close
CN60 - Switch 1,2 Operating
Close
Ice Route Switch 1
0V
CN60-"12"(Purple)
Ice Route Switch 2
0V
CN60-"10"(WHT)
PIN Number
both sides of motor connected
① Check CN71-"1" Connector / Re-connect
② Check the short/open for the SSR73 of Cover Ice Motor on Main PCB.
③ Check the voltage of Resistance of parallel Connector CN71-"1", CN71_1-"5"
(Definitely plug out prior to repair)
pressed area normal when
ing Open
J23 JUMMPER and CN50-"9",
5V 0V
5V 0V
① Main PCB - Check the wire OPEN/SHORT between the Cover Ice Motor Rotation sensing switches.
② Check the Short of Cover Ice Motor Control Circuit SSR73 in the MAIN PCB.
③ Replace the MAIN PCB or the Dispenser Cover Motor.
Start
No
Does GEARED MOTOR
work properly?
Yes
No
Is Cubed or Crushed
Ice mode selected on the
LED PANEL?
Yes
No
Is the DISPENSER
switch selected?
Yes
No
Does the wiring at the
properly?
Yes
Yes
Is the AC input voltage
applied to the both ends
of the motor?
No
No
Is the sensing
SWITCH connection
normal?
Yes
No
Is the switch
motor rotates?
Yes
Yes
Are the voltage
"10" normal?
No
95
TROUBLESHOOTING
Replace the MOTOR
Cubed or Crushed Ice is selected on
the LED PANEL PCB
Select the DISPENSER switch
Check the WIRE
Check the MOTOR/Check any
interference on MOTOR rotation
Check/Repair the Housing connector
Check/Repair the Motor Rotation
pressing area
Normal