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CONTENTS

1. SPECIFICATION............................................................................................................................3

2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4

3. PARTS IDENTIFICATION ............................................................................................................ 6

4. INSTALLATION............................................................................................................................. 7

5. OPERATION ................................................................................................................................10

6. WIRING DIAGRAM / PCB LAYOUT / PROGRAM CHART.........................................................12

7. TROUBLE SHOOTING................................................................................................................14

7-1.BEFORE SVC CHECKING ..................................................................................................14

7-2.QC TEST MODE..................................................................................................................14

7-3.HOW TO KNOW THE WATER LEVEL FREQUENCY.........................................................14

7-4.

HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION

......14

7-5.ERROR DISPLAY................................................................................................................15

8. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................17

8-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION ...........................................17

8-2. FAULT DIAGNOSIS AND TROUBLE SHOOTING .............................................................20

9. DISASSEMBLY INSTRUCTIONS ...............................................................................................26

10. EXPLODED VIEW AND PARTS LIST .......................................................................................34

10-1. THE EXPLODED VIEW OF CABINET ASSEMBLY .........................................................34

10-2. THE EXPLODED VIEW OF CONTROL PANEL AND DISPENSER ASSEMBLY ............35

10-3. THE EXPLODED VIEW OF DRUM AND TUB ASSEMBLY .............................................36

LG WM1377HW Service Manual

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