LG LFXS26973 Series Service Manual page 49

Crush mode doesn't work
1
Check the Auger Motor
(Working Sound
Visual inspection)
Yes
2
Check the SUB PCB
Resistance Value
CON1
17 pin, 19 pin
th th
17 pin, 21 pin
th th
19 pin, 21 pin
th th
U, V, W
Yes
3
Check the SUB PCB voltage Value No
CON1
Voltage [V]
2nd pin, 6 th pin
24V
24V±10%
While pushing the lever S/W
is voltage correct?
CON1
Voltage [V]
2nd pin, 6 pin
th
PWM
5V±10%
CON1
Voltage [V]
14 pin, 6 pin
th th
24V Enable 5V±10%
Yes
Check the
No
Ice Bucket
Change the
No
Dispenser
Assembly,Ice
(Loc. 600C)
Resistance [
]
2.55±7%
Change the
Item ⑤
(Main PCB
Voltage
Value)
※ Sub PCB Voltage NG
or, When Main PCB
Voltage is OK,
Estimated Harness
open circuit.
Change the
Case
No
Assembly,
PCB
(Loc. 500C)
4
Check the Display PCB Voltage
Value
Con 102
CON102
10 pin, 23 pin
th th
PWM
CON102
6 pin, 23 pin
th th
24V Enable
Yes
5
Check the Main PCB Voltage
Value
CON6
4 pin, 3 pin
th th
24V
Yes
6
Explain to customer
- 49 -
Change the
No
Cover
Assembly,
Display
(Loc. 279A)
Voltage [V]
5V±10%
Voltage [V]
5V±10%
Change the
No
PCB
Assembly,
Main
Con 6
(Loc. 500A)
Voltage [V]
24V±10%