LG LSC27914ST 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 -