LG LSC27914SB Owner's Manual - Page 91

Enter to TEST MODE 1 press once TEST S/W

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9) Abnormal Cooling Fan Error NO. CHECKING FLOW 1) Reset product. 2) Enter to TEST MODE 1 (press once TEST S/W on Main PCB) 5 RESULT & SERVICE ACTION Result (a) ~ (b) Normal Service Action Change Main PCB (b) ~ (c) Abnormal Change Motor (a) ~ (b) 3) Remove Cover PCB. 4) Check voltage in CON 6 as shown in the pictures. (b) ~ (c) Disconnect Motor connector, and check status of plated terminals. 6 Terminals contact surface must be free of rust and dirt. Also, the terminals red with a T.P.A., Motor wire must not have any damage. Reset the product. After 3 minutes execute DISPLAY CHECK MODE, check the result. 7 Result Wire damage,rust, dirt, TPA absences. Normal appearance Service Action Change Main PCB Go to Step 7 Result All Display LED's are turned ON Normal Service Action Explain to the customer Cooling Fan Error Code appears Abnormal Replace Cooling Fan Motor - 90 -

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9) Abnormal Cooling Fan Error
1) Reset product.
2) Enter to TEST MODE 1 (press once TEST S/W
on Main PCB)
3) Remove Cover PCB.
4) Check voltage in CON 6 as shown in the pictures.
Disconnect Motor connector, and check status of
plated terminals.
Terminals contact surface must be free of rust and
dirt. Also, the terminals red with a T.P.A., Motor
wire must not have any damage.
5
NO.
CHECKING FLOW
RESULT & SERVICE ACTION
6
Result
Service Action
(a) ~ (b)
(b) ~ (c)
Change Main PCB
Normal
Abnormal
Change Motor
Reset the product.
After 3 minutes execute DISPLAY CHECK MODE,
check the result.
Result
Service Action
All Display
LED’s are
turned ON
Cooling Fan
Error Code
appears
Explain to the customer
Normal
Abnormal
Replace Cooling
Fan Motor
7
(a) ~ (b)
(b) ~ (c)
Result
Service Action
Wire damage,rust, dirt,
TPA absences.
Normal appearance
Change Main PCB
Go to Step 7
- 90 -