Table Of Contents; Safety Precautions - LG LFC20770SB Service Manual

CONTENTS
SAFETY PRECAUTIONS ........................................................................................................
1. SPECIFICATIONS ...............................................................................................................
2. PARTS IDENTIFICATION ....................................................................................................
3. DISASSEMBLY ...................................................................................................................
3-1 Fan and Fan Motor..........................................................................................................
3-2 Defrost Control Assembly.................................................................................................
3-3 LED................................................................................................................................
3-4 Display..................................................................................................
3-5 Multiduct..........................................................................................................................
3-6 Cover Valve......................................................................................................................
3-7 Door Disassembly............................................................................................................
3-8 How to remove the Door Handle.....................................................................................
3-9 How to remove the Pillar.................................................................................................
3-10 How to remove Pull out drawer.....................................................................................
3-11 Closing and aligning the doors......................................................................................
4. ADJUSTMENT ...................................................................................................................
4-1 Compressor ...................................................................................................................
4-2 e-PTC-Starter ................................................................................................................
4-3 OLP (overload protector) ...............................................................................................
5. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER ..................................
5.1 Operation principle .........................................................................................................
5.2 Ice maker functions ........................................................................................................
6. CIRCUIT DIAGRAM ............................................................................................................
7. CIRCUIT OF MICOM............................................................................................................
7.1 Function .........................................................................................................................
7.2 PCB function ..................................................................................................................
8. TROUBLESHOOTING ........................................................................................................
8-1 Compressor and electric components ...........................................................................
8-2 e-PTC and OLP .............................................................................................................
8-3 Other electrical components ..........................................................................................
8-4 Service diagnosis chart ..................................................................................................
8-5 Refrigeration cycle .........................................................................................................
8-6 PCB Picture.......... .........................................................................................................
8.7 Troubleshooting With Error Display
8.8 Troubleshooting Without Error Display
8.9 Appendix..............................................
9. EXPLODED VIEW ...............................................................................................................

SAFETY PRECAUTIONS

Please read the following instructions before servicing your
refrigerator.
1.Check the refrigerator for current leakage.
2.To preven telectric shock,unplug before servicing.
3.Always check line voltage and amperage.
4.Use standard electrical components.
5.Don't touch metal products in the freezer with wet
Hands.This may cause frost bite.
6.Prevent water from spiling on to electric elements or the
Machine parts.
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7.Before tilting the refrigerator,remove all materials from
On or in the refrigerator.
8.When servicing the evaporator,wear gloves to prevent
Injuries from the sharp evaporator fins.
9.Service on the refrigerator should be performed by a
Qualified technician.Sealed system repair must be
Performed by a CFC certified technician.
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