Samsung RS757LHQESR/ Series Service Manual page 62

DISASSEMBLY AND REASSEMBLY
11) When the Cover Ice Route Motor (Geared Motor) does not work properly
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.
① When the Cover Ice Motor does not operate
Motor does not stop rotating
① Check if power is applied at PCB CASE CN9 ① & ⑦
② Check Cover Ice Motor Control Circuit SSR71 on MAIN PCB ; Short or Open.
③ Check Wire Short / Open at the wiring between PCB CASE and MAIN PCB. (CN9 ① - CN71 ① , CN9 ⑦ - CN72 ①)
② When the Cover Ice Motor does not stop rotating
When it is still defective with the above corrective actions
▶ M easure the voltage of the COVER ICE
ROUTE MOTOR
When facing the Display Panel,
Left:S/W1 and Right : S/W2
When opening the Cover
S/W1 is pressed : 0V, S/W2 : 5V
When closing the Cover S/W1, S/W2 is pressed : 0V
① Check Wire Open / Short at CASE PCB WIRE - COVER ICE MOTOR Rotation Pick-Up Switch
② Check Cover Ice Motor Control Circuit SSR71 on MAIN PCB ; Short or Open
③ Check Wire Short / Open at the wiring between PCB CASE and MAIN PCB. (CN9 ① - CN71 ① , CN9 ⑦ - CN72 ①)
④ Replace MAIN PCB or the entire PCB CASE
START
NO
Is Freezer door closed?
YES
NO
The GEARED MOTOR operates
nomally?
YES
NO
Is Cubed/Crused Ice selected?
YES
NO
Is the Dispenser Lever S/W
pressed?
YES
NO
Is the Motor connected to its wire
terminals?
YES
YES
Is AC voltage measured at the Motor
terminals?
NO
NO
Is the Pickup Switch Connected
properly?
YES
NO
When the Motor rotates, the
Lever Switch is pressed
properly?
YES
YES
Is the voltage at CN6 ⑦ -⑨ and ⑧
-⑨ ?
NO
61
Close Freezer door
Check / Replace Motor
Select Cubed or Crushed Ice
Press it properly
Check Wiring
Check Motor / Check if Motor
rotates properly
Check / Repair Connector
Check / Repair Parts related to the Motor
Normal