LG LTNS16121V /00 Service Manual page 46

- Freezer Fan Error
No Checking
Reset the unit and start Test Mode 1 (press
1
once the button on PCB).
Open the freezer
door and check the
air flow. Does it feel
windy?
Check the fan motor. Rotate fan using hand.
2
Does it feel sticky?
Check the Fan motor voltage. Is fan motor
3
voltage 8V~13V?
CON5
TEST MODE 1
CON5
4 th pin ~ 5 th
Check the Fan motor voltage. Is fan feedback
4
voltage 0V, 5V?
CON5
TEST MODE 1
CON5
5 th pin ~ 6 th
Voltage [V]
8V~13V
pin
Voltage [V]
Not 0V, 5V
pin
Result and SVC countermeasure
Result
Yes
No
Result
Yes
No
Result
Yes
No
Result
Yes
No
46
SVC Support
Go to step 3
Go to step 2
SVC Support
Change the motor
Go to step 3
SVC Support
Go to step 4
Replace PCB
SVC Support
Change the motor
Explain to customer