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LG LFC23760SW Service Manual
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LG LFC23760SW Service Manual

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LG LFC23760SB
Owner's Manual
Shop genuine replacement parts for LG LFC23760SB
Find Your LG Refrigerator Parts - Select From 834 Models
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  • Page 1 This Owner's Manual is provided and hosted by Appliance Factory Parts. LG LFC23760SB Owner's Manual Shop genuine replacement parts for LG LFC23760SB Find Your LG Refrigerator Parts - Select From 834 Models -------- Manual continues below --------...
  • Page 2 REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MODELS: LFC23760**...

  • Page 3: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ..................... 1. SPECIFICATIONS ......................2. PARTS IDENTIFICATION ....................3. DISASSEMBLY ......................... 3.1 Door ..........................3.2 Door alignment ......................3.3 Fan and fan motor ....................... 3.4 Defrost control assembly ..................... 3.5 Lamp ..........................3.6 Control box refrigerator....................3.7 Multi duct........................4.

  • Page 4: Specifications

    1. SPECIFICATIONS MODELS LFC23760** SPECIFICATIONS CAPACITY litre;(F/R/T) 197.83/436.93/634.76 DIMENSIONS in;(W*H*D) 32 7/8*69*34 WEIGHT kg; HANDLE TYPE Vista-Handle REVERSIBLE DOOR DOOR FINISH STAINLESS REFRIGERANT/gr R134a 120±3 ICE TRAY Ice bank (1ea) SHELF BASKET DOOR LAMP YES (1) 40W/azul TRAY MEAT SHELF 4Fix MAGIC CRISPER LAMP...

  • Page 5: Parts Identification

    2. PARTS IDENTIFICATION Use this section to become more familiar with the parts and features. NOTE: This guide covers several different models. The refrigerator you have purchased may have some or all of the items listed below. The locations of the features shown below may not match ypur model. Filter (Inside)* Digital Sensor Control Dairy Bin...

  • Page 6: Disassembly

    3. DISASSEMBLY 2. Remove gasket bracket clips 3-1 DOOR There are two clips on each door. Start bracket removal Left Door near one of the middle clips. 1) Pull gasket back to expose gasket bracket clip and Loosen the cover screw (1). door frame.

  • Page 7: Door

    2. Insert gasket into channel 3-2 DOOR ALIGNMENT 1) Snap gasket assembly into the door bracket. If the space between your doors is uneven, follow the <Inserting the Gasket Assembly into the Bracket Door> instructions below to align the doors: 1.

  • Page 8: Door Alignment

    3-3 FAN AND FAN MOTOR 3-5-1 Refrigerator Compartment Lamp 1. Remove the freezer shelf. (If your refrigerator has an 1. Unplug the power cord from the outlet. icemaker, remove the icemaker first) 2. Remove refrigerator shelves. 2. Remove the plastic guide for slides on left side by 3.

  • Page 9: Adjustment

    4. ADJUSTMENT 4-1 COMPRESSOR 4-2-3 PTC-Applied Circuit Diagram •Starting Method for the Motor 4-1-1 Role The compressor intakes low temperature and low pressure gas from the evaporator of the refrigerator and compresses OVERLOAD PROTECTOR this gas to high-temperature and high-pressure gas. It then delivers the gas to the condenser.

  • Page 10: Olp (Overload Protector)

    4-3 OLP (OVERLOAD PROTECTOR) 4-4 TO REMOVE THE COVER PTC 4-3-1 Definition of OLP (1) OLP (OVERLOAD PROTECTOR) is attached to the Compressor and protects the Motor by opening the circuit to the Motor if the temperature rises and activating the bimetal spring in the OLP. (2) When high current flows to the Compressor motor, the Bimetal works by heating the heater inside the OLP, and the OLP protects the Motor by cutting off the...

  • Page 11: Circuit Diagram

    5. CIRCUIT DIAGRAM PWB(PCB) ASSEMBLY,DISPLAY CON101 STEPPING C-FAN F-FAN MOTOR PK WH BK YL CON5 CON6 CON4 CON8 RT-SENSOR PWB(PCB) ASSEMBLY, MAIN R-DOOR PERCEPTION S/W CON7 F-DOOR PERCEPTION S/W DEF-SENSOR R-SENSOR F-SENSOR POWER SUPPLY CON2 CON3 CON1 CORD GN/YL (GN) ICE MAKER PART GN/YL (GN)

  • Page 12: Troubleshooting

    6. TROUBLESHOOTING 6-1 COMPRESSOR AND ELECTRIC COMPONENTS (Rated Voltage Remove PTC-Starter Power Source. ±10%)? from Compressor and measure voltage between Terminal C of Compressor and Terminal 5 or 6 of PTC. OLP disconnected? No Voltage. Replace OLP. Check connection condition. Reconnect.

  • Page 13: Ptc And Olp

    6-2 PTC AND OLP Normal operation of Separate PTC-Starter Observation value is Compressor is from Compressor and 115V/60Hz : 6.8 ±30% measure resistance impossible or poor. between No. 5 and 6 of PTC-Starter with a Tester. (Figure 19) Replace PTC- The resistance value Starter.

  • Page 14: Other Electrical Components

    6-3 OTHER ELECTRICAL COMPONENTS • Not cooling at all Check for open short or Compressor Cause incorrect resistance readings doesn't run. in the following components a. Starting devices Short, open, or broken. Poor contact b. OLP or shorted. Coil open or shorted. c.

  • Page 15: Service Diagnosis Chart

    6-4 SERVICE DIAGNOSIS CHART COMPLAINT POINTS TO BE CHECKED REMEDY No Cooling. • Is the power cord unplugged from the outlet? • Plug into the outlet. • Check if the power switch is set to OFF. • Set the switch to ON. •...

  • Page 16: Refrigeration Cycle

    6-5 REFRIGERATION CYCLE • Troubleshooting Chart TEMPERATURE STATE OF STATE OF THE CAUSE REMARKS OF THE THE UNIT EVAPORATOR COMPRESSOR PARTIAL Freezer Low flowing sound of A little higher • Refrigerant level is low due LEAKAGE compartment and Refrigerant is heard and than ambient ¥...
  • Page 17 6-5-1 SEALED SYSTEM DIAGNOSIS “Not Cooling” Complaint All components operating, No airflow problems, Not frosted up as a defrost problem problem has been isolated to sealed system area Frost None Partial Pattern? Equalization Equalization Test Test Very Fast Very Slow Very Slow Very Fast Fast...

  • Page 18: Operation Principle And Repair Method Of Icemaker

    7. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 7-1 OPERATION PRINCIPLE 7-1-1 Operation Principle of Icemaker Power On Start Position •Adjusts Ejector to Start Position with power on. Icemaking • Waits until water becomes cold after starting the Mode Icemaking operation. Harvest •...

  • Page 19: Ice Maker Functions

    7-2 ICE MAKER FUNCTIONS 7-2-1 Ice Making Mode 1. Icemaking refers to the freezing of supplied water in the ice trays. Complete freezing is assured by measuring the temperature of the Tray with icemaking SENSOR. 2. Icemaking starts after completion of the water fill operation. 3.

  • Page 20: Defect Diagnosis Function

    7-2-5 Function TEST 1. This is a compulsory operation for test, service, cleaning, etc. It is operated by pressing and holding the Cube Size button for 3 seconds. 2. The test works only in the Icemaking Mode. It cannot be entered from the Harvest or Fill mode. (If there is an ERROR, it can only be checked in the TEST mode.) 3.

  • Page 21: Description Of Function & Circuit Of Micom

    8. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM 8-1 FUNCTION 8-1-1 Function 1. When the appliance is plugged in, it is set to "4" for Refrigerator and "4" for freezer. You can adjust the Refrigerator and the Freezer control temperature by pressing the ADJUST button. 2.
  • Page 22 8-1-5 Alarm for Open Door 1. This feature sounds a buzzer when the freezer or refrigerator door is not closed within 1 minute after it is opened. 2. One minute after the door is opened, the buzzer sounds three times each for 1/2 seconds. These tones repeat every 30 seconds.
  • Page 23 8-1-9 Defect Diagnosis Function 1. Automatic diagnosis makes servicing the refrigerator easy. 2. When a defect occurs, the buttons will not operate; but the tones. such as ding. will sound. 3. When the defect CODE removes the sign, it returns to normal operation (RESET). 4.
  • Page 24 8-1-10 TEST Mode 1. The Test mode allows checking the PCB and the function of the product as well as finding out the defective part in case of an error. 2. The test mode is operated by pressing two buttons at Display panel. 3.

  • Page 25: Pcb Function

    8-2 PCB FUNCTION 8-2-1 Power Circuit The secondary part of the TRANSFORMER is composed of the power supply for the display, the BLDC FAN Motor drive (15.5 V), the relay drive (12 Vdc) and the MICOM and IC (5 Vdc). The voltage for each part is as follows: PART VA 1...
  • Page 26 8-2-2 Oscillation Circuit This circuit generates the base clock for calculating time and the synchro clock for transmitting data from and to the inside logic elements of the IC1 (MICOM). Be sure to use specified replacement parts, since calculating time by the IC1 may be changed.
  • Page 27 8-2-4 Load / Buzzer Drive & Open Door Detection Circuit 1. Load Drive Condition Check FRENCH DOOR DEFROSTING COMP LAMP LOAD TYPE HEATER 1, 2 / HEATER DEW HEATER Measurement Location (IC6) NO.14 NO.12 NO.11 NO.13 1V or below Condition - 26 -...
  • Page 28 2. Fan motor driving circuit (freezing compartment fan) 1. This circuit makes standby power 0 by cutting off power supplied to ISs inside of the fan motor in the fan motor OFF. 2. This is a circuit to perform a temporary change of speed for the fan motor and applies DC voltage up to 7.5V ~ 16V to motor . 3.
  • Page 29 3. Buzzer Drive Condition Check Condition Tone (Ding~Dong~) when the button on Alarm for open door Measure- the display is pushed. (beep-beep-beep) ment Location 0.05 s 0.2 s 0.1 s 0.5 s 0.5 s IC1 ( 2.63 kz (Ding~) 2.21 kz (Dong~) IC1 ( 2.63 kz (Beep~) 4.
  • Page 30 8-2-5 Temperature Sensor Circuit The upper CIRCUIT reads REFRIGERA TOR temperature, FREEZER T emperature, and DEFROST-SENSOR temperature for defrosting and the indoor temperature for compensating for the surrounding temperature into MICOM. OPENING or SHORT state of each TEMPERA TURE SENSOR are as follows: SENSOR CHECK POINT NORMAL (-30°C ~ 50°C)
  • Page 31 8-2-6 Refrigeration Compartment Stepping Motor Damper Circuit * The circuit shown below is the damper circuit to regulate the refrigerator temperature. - 30 -...
  • Page 32 8-2-9 Key Button Input & Display Light-On Circuit ? The circuit shown above determines whether a function control key on the operation display is pushed. It also turns on the corresponding function indication LED (LED Module) SEVEN SEGMENT DISPLAY (SEVEN SEGMENT DISPLA Y MODULE).

  • Page 33: Resistance Specification Of Sensor

    8-3 RESISTANCE SEPECIFICATION OF SENSOR TEMPERATURE DETECTED RESISTANCE OF FREEZER RESISTANCE OF REFRIGERATOR & BY SENSOR SENSOR DEFROST SENSOR & ROOM SENSOR -20º C 22.3 K 77 K -15º C 16.9 K 60 K -10º C 13.0 K 47.3 K 10.1 K 38.4 K - 5º...

  • Page 34: Troubleshooting

    - 33 -...
  • Page 35 - 34 -...

  • Page 36: Main Pwb Assembly And Parts List

    8-5 MAIN PWB ASSEMBLY AND PARTS LIST 8-5-1 Main PWB Assembly Top view Bottom view - 35 -...
  • Page 37 8-5-2 Replacement Parts List - 36 -...
  • Page 38 8-5-3 PWB Assembly, Display and parts list - 37 -...

  • Page 39: Pwb Diagram

    8-6 PWB DIAGRAM 8-6-1 PWB Main Assembly - 38 -...
  • Page 40 - 39 -...

  • Page 41: Exploded View And Replacement Part List

    #EV# 9. EXPLODED VIEW & REPLACEMENT PARTS LIST CASE PARTS CAUTION: Use the part number to order part, not the position number. 103B 281A 402A 103A 410A 282E 409D 271C 503F 501F 503G 402A 271A 903D 503D 610A 282F 503C 503E 501A 409B...
  • Page 42 #EV# FREEZER PARTS CAUTION: Use the part number to order part, not the position number. 136B 131A 145C 248E 248F 237C 145F 136A - 41 -...
  • Page 43 #EV# REFRIGERATOR PARTS CAUTION: Use the part number to order part, not the position number. 143E 146A 140B 140D 140E 143E 1 1 43E 140B 140D 140B 1 1 40D 140E 140E 143F 142D 140B 142E 103E 103E 103E 128A 170A 128B 167B...
  • Page 44 #EV# DOOR PARTS CAUTION: Use the part number to order part, not the position number. 230A 230B 104E 231A 233D 233D 233A 231B 233B 233C 241A 241B 212G 241C 233G 233H 237A 241C 233E 233F 237A 241C 244A 244A 212J 212J 241C 241C...
  • Page 45 #EV# WATER and ICE MAKER PARTS CAUTION: Use the part number to order part, not the position number. 602A 600C 600A 622B 627A 618A 619C 616E 623C 619A 262D - 44 -...
  • Page 46 #EV# LFC23760ST Loc No.Part No. Description Loc No.Part No. Description 103A 3650JJ2003H Handle,Rear 271C AEH36437002 Hinge Assembly,Upper 103B 3650JJ2003D Handle,Rear 281A ACQ36833808 Cover Assembly,Hinge 103C 3551JJ1015H Cover Assembly,Lower 282B 4775JJ2019E Hinge Assembly,Center 103E 5218JJ3001A Rail,Slide 282E ACQ36833807 Cover Assembly,Hinge 104E 4931JJ3002A Holder Assembly,Gasket 282F 3806JL2006H...
  • Page 47 #EV# LFC23760SW Loc No. Part No. Description Loc No. Part No. Description 103A 3650JJ2003E Handle,Rear 271A AEH36437001 Hinge Assembly,Upper 103B 3650JJ2003A Handle,Rear 271C AEH36437002 Hinge Assembly,Upper 103C 3551JJ1015B Cover Assembly,Lower 281A ACQ36833802 Cover Assembly,Hinge 103E 5218JJ3001A Rail,Slide 282B 4775JJ2019A Hinge Assembly,Center...
  • Page 48 #EV# LFC23760SB LOC NO PART NO DESCRIPTION LOC NO PART NO DESCRIPTION 103A 3650JJ2003M Handle,Rear 281A ACQ36833803 Cover Assembly,Hinge 103B 3650JJ2003L Handle,Rear 282B 4775JJ2019C Hinge Assembly,Center 103C 3551JJ1015F Cover Assembly,Lower 282E ACQ36833804 Cover Assembly,Hinge 103E 5218JJ3001A Rail,Slide 282F 3806JL2006H Decor,Duct 103E 5218JJ3001A Rail,Slide 286A...
  • Page 49 P/No. MFL49482903 March , 2008...

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