LG LSC27914ST Owner's Manual - Page 89

Press Ice maker TEST S/W for 3 seconds. Check

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8) Abnormal Ice maker Unit Error NO. CHECKING FLOW Check HALL IC signal in CON 8 Press Ice maker TEST S/W for 3 seconds. Check the change between 0V and 5V in HALL IC signal during Test period. 5 RESULT & SERVICE ACTION Result Signal Change (0V 5V 0V ...) No change (Still in 0V or 5V) Other Service Action Go to Step 6 Replace Ice maker unit Replace Main PCB Check Motor Signal in CON 8. Press Ice maker TEST S/W for 3 seconds. Check the Voltage changes in motor signal during Test period. It must change from positive voltage to negative voltage during the Test. 6 Result Voltage inversion No voltage inversion Service Action Go to Step 6 Replace Main PCB Check the movements in Ice maker unit. Press Ice maker TEST S/W for 3 seconds. Check the rotation of motor and the movement of arm. 7 Result Movement is present in Motor and Arm Normal No movement present in Motor and Abnormal Arm Service Action Explain to costumer Replace Ice maker unit - 88 -

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8) Abnormal Ice maker Unit Error
Check HALL IC signal in CON 8
Press Ice maker TEST S/W for 3 seconds. Check
the change between 0V and 5V in HALL IC signal
during Test period.
Check Motor Signal in CON 8.
Press Ice maker TEST S/W for 3 seconds. Check the
Voltage changes in motor signal during Test period.
It must change from positive voltage to negative
voltage during the Test.
Result
Service Action
Signal Change
(0V
5V
0V
...)
No change (Still in 0V
or 5V)
Go to Step 6
Replace Ice maker unit
Result
Service Action
Voltage inversion
No voltage inversion
Go to Step 6
Replace Main PCB
Check the movements in Ice maker unit.
Press Ice maker TEST S/W for 3 seconds. Check
the rotation of motor and the movement of arm.
5
6
NO.
CHECKING FLOW
RESULT & SERVICE ACTION
7
Other
Replace Main PCB
Result
Service Action
Movement is
present in
Motor and
Arm
No movement
present
in Motor and
Arm
Replace Ice maker unit
Explain to costumer
Normal
Abnormal
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