LG LMX25984ST Service Manual Repair Guide

REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MODEL : LMX25984ST/02 LMX25984WB/02 LMX25984SW/02

- 2 - ECN (Engineering Change Number) 315A 304A 312A 323B 230B 230A 231B 231A 303A 619E 410G 500H 500A 413A 319C 319A 300A Loc No. Base Assembly,Compressor Cover,PTC Damper Assembly,Seat Condenser Assembly,Wire Door Assembly,Refrigerator(Left) Door Assembly,Refrigerator(Right) Door Foam Assembly,Refrigerator Door Foam Assembly,Refrigerator Harness Assembly Harness Assembly Capacitor,Electric Appliance Film,Radial PCB Assembly,Sub PCB Assembly,Main Case,PCB Guide,Fan Tray,Drip Compresser,Set Part Name LMX25984 /01 302B 400A 290A 323B 630A 230A 630B 231A 411A 410G 614A 500H 500A 619A 300A Loc No. Evaporator Assembly Controller Assembly Case Assembly,PCB Condenser Assembly,Wire Door Assembly,Freeze Room Door Assembly,Refrigerator(Right) Door Foam Assembly Door Foam Assembly,Refrigerator Power Cord Assembly Capacitor,Electric Appliance Film,Radial Solenoid,Reversing,Valve PCB Assembly,Sub PCB Assembly,Main Valve,Water Compresser,Set Part Name LMX25984 /02

- 3 - CONTENTS SAFETY PRECAUTIONS ....................................................................................................................................................... 2 1. SPECIFICATIONS .............................................................................................................................................................. 3 2. PARTS IDENTIFICATION .................................................................................................................................................. 4 3. DISASSEMBLY ............................................................................................................................................................. 5-17 REMOVING AND REPLACING REFRIGERATOR DOORS ............................................................................................... 5 DOOR INSTALLATION ....................................................................................................................................................... 6 DOOR .............................................................................................................................................................................. 7-8 TO REMOVE THE DISPENSER ......................................................................................................................................... 8 DOOR ALIGNMENT ........................................................................................................................................................... 8 FAN AND FAN MOTOR(Evaporator) .................................................................................................................................. 8 ICE FAN SCROLL ASSEMBLY REPLACEMENT ...............................................................................................................9 DEFROST CONTROL ASSEMBLY .................................................................................................................................... 9 LAMP .................................................................................................................................................................................. 9 CONTROL BOX-REFRIGERATOR .................................................................................................................................... 9 MULTI DUCT .................................................................................................................................................................... 10 MAIN PWB, DISPLAY PWB REPLACEMENT, FUNNEL REPLACEMENT ..................................................................... 10 SUB PWB FOR DISPENSER, DUCT DOOR REPLACEMENT, ICE CORNER DOOR REPLACEMENT, ICE MAKER ASSEMBLY ..................................................................................................................... 11 AUGER MOTOR COVER, AUGER MOTOR REPLACEMENT ........................................................................................ 12 DOOR ICE BIN ................................................................................................................................................................. 13 HOW TO REMOVE AND REINSTALL THE PULLOUT DRAWER .............................................................................. 14-16 SAFETY PRECAUTIONS Please read the following instructions before servicing your refrigerator. 1. Unplug the power before handling any elctrical componets. 2. Check the rated current, voltage, and capacity. 3. Take caution not to get water near any electrical components. 4. Use exact replacement parts. 5. Remove any objects from the top prior to tilting the product. 4. ADJUSTMENT .................................................................................................................................................................. 17 5. CIRCUIT DIAGRAM .......................................................................................................................................................... 18 6. TROUBLESHOOTING (Error Code) ................................................................................................................................ 19 7. PCB PICTURE ............................................................................................................................................................. 20-21 8. TROUBLESHOOTING WITH ERROR DISPLAY ........................................................................................................ 22-30 9. TROUBLESHOOTING WITHOUT ERROR DISPLAY ................................................................................................. 31-39 10. REFERENCE ............................................................................................................................................................. 40-43 11. COMPONENT TESTING INFORMATION ................................................................................................................ 44-50 12. COMPRESSOR TROUBLESHOOTING .................................................................................................................... 51-63 13. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER ........................................................................ 64-66 14. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM ........................................................................................... 67-70 15. EXPLODED VIEW ........................................................................................... ......................................... ........................................................... 71-

- 4 - 1. SPECIFICATIONS Opaque Drawer Type Linear Fin Tube Type Spiral Condenser R-134a (140 g) FREOLα 8G (180 ml) SHEATH HEATER LED Module(27) Bulb Lamp VEGETABLE TRAY COMPRESSOR EVAPORATOR CONDENSER REFRIGERANT LUBRICATING OIL DEFROSTING DEVICE REFRIGERATOR FREEZER LAMP ITEMS SPECIFICATIONS Side Rounded 35 3 /4 X 34 1 /4 X 69 3 /4 (WXDXH) 25cu.ft 308.65 (25cu.ft) Fan Cooling Micom Control Full Automatic Heater Defrost Embossed Metal, VCM, Stainless Bar ABS Resin Polyurethane Foam DOOR DESIGN DIMENSIONS (inches) NET WEIGHT (pounds) COOLING SYSTEM TEMPERATURE CONTROL DEFROSTING SYSTEM DOOR FINISH HANDLE TYPE INNER CASE INSULATION ITEMS SPECIFICATIONS Description LMX25984** Depth w/ Handles Depth w/o Handles Depth w/o Door Depth (Total with Door Open) Height to Top of Case Height to Top of Door Hinge Width Width (door open 90 deg. w/o handle) Width (door open 90 deg. w/ handle) A B C D E F G H I 34 1/4 in. 31 1/4 in. 27 7/8 in. 46 1/2 in. 68 3/8 in. 69 3/4 in. 35 3/4 in. 39 1/4 in. 44 1/4 in. DIMENSIONS 25 cu. ft

- 5 - 2. PARTS IDENTIFICATION ADJUSTABLE REFRIGERATOR SHELVING The refrigerator compartment shelves are adjustable to allow flexibility for storage needs. MODULAR DOOR BINS Three interchangeable bins can be arranged to suit your storage needs. REMOVABLE ICE STORAGE BIN The ice storage bin can be removed to fill ice buckets,coolers,or pitchers. INTERIOR LAMPS Two separate LED arrays light the freezer and refrigerator interiors. FIXED DOOR BIN FIXED DOOR BIN INTERIOR LAMP 1 2 3 4

- 6 - 3. DISASSEMBLY ● Removing Refrigerator Door CAUTION : Before you begin, unplug the refrigerator. Remove food and bins from doors. ▶Left Door -FIG. 2 1. Disconnect water supply tube by pushing back on the disconnect ring (4).-FIG. 1 2. Open door. Loosen top hinge cover screw (1). Use flat tip screwdriver to pry back hooks on front underside of cover (2). Lift up cover. 3. Disconnect door switch wire harness. Remove cover. 4. Pull out the tube(3). 5. Disconnect the three wire harnesses (4). Remove the grounding screw (5). 6. Rotate hinge lever (6) counterclockwise. Lift top hinge (7) free of hinge lever latch (8). CAUTION : When lifting hinge free of latch, be careful that door does not fall forward. 7. Place door, inside facing up, down onto a non-scratching surface. ▶Right Door -FIG. 3 1. Open door. Loosen top hinge cover screw (1). Lift up cover (2). 2. Disconnect door switch wire harness. Remove cover. 3. Disconnect wire harness (3). 4. Remove the grounding screw (4). 5. Rotate hinge lever (5) clockwise. Lift top hinge (6) free of hinge lever latch (7). CAUTION : When lifting hinge free of latch, be careful that door does not fall forward. 6. Lift door up from middle hinge pin door. 7. Place door, inside facing up, down onto a non-scratching surface. 3-1 REMOVING AND REPLACING REFRIGERATOR DOORS (4) (5) (6) (7) (3) (1) (2) (4) (3) (6) (7) (8) (5) Figure 1 Figure 2 Figure 3 1)Insert the tube until you can see only one of the lines printed on the tube. 2)After inserting, pull the tube to ascertain that it is secure. 3)Assemble clip.

- 7 - 3-2 DOOR ● Door Gasket Removal 1. Remove door frame cover Starting at top of cover and working down, snap cover out and away from door. ● Door Gasket Replacement 1. Insert gasket bracket clips 1) Insert gasket bracket edge beneath door frame edge. 2) Turn upper gasket bracket spring so that the spring ends are in the door channel. 3) Push in clip until you hear it snap securely into place. 2. Insert gasket into channel 1) Snap gasket assembly into the door bracket. <Inserting the Gasket Assembly into the Bracket Door> 4) Push in remaining clip until you hear it snap securely into place. Note : Make sure that no part of gasket bracket edge protrudes from beneath door frame edge. 2. Remove gasket bracket clips There are two clips on each door. Start bracket removal near one of the middle clips. 1)Pull gasket back to expose gasket bracket clip and door frame. 2)Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snap out. 3)Continue prying back along seam until all clips snap out. 3. Remove gasket Pull gasket free from gasket channel on the three remaining sides of door. Figure 1 Frame Cover Handle Figure 4 Figure 5 Door Frame Correct Correct Incorrect Incorrect Figure 2 Door Frame Gasket Bracket Clip Gasket Bracket Flat Tip Screwdriver Figure 3 Spring Gasket Bracket Clip

- 8 - 3. Replace door frame cover Starting at top of cover and working down, snap cover back into door. 2) Press gasket into channels on the three remaining sides of door. Figure 6 Figure 8 Figure 9 Figure 7 3-3 DOOR ALIGNMENT If the space between your doors is uneven, follow the instructions below to align the doors: 1. Remove the Base Grillie. 2. Turn the leveling legs (CCW) to raise or (CW) to lower the height of the front of the refrigerator by using flat blade screw driver or 11/32" wrench. 3. Use the wrench (Included with the User Manual) to adjust the bolt in the door hinge to adjust the height. (CCW to raise or CW to lower the height.) 3-4 FAN AND FAN MOTOR(EVAPORATOR) 1. Remove the freezer shelf. (If your refrigerator has an icemaker, remove the icemaker first) 2. Remove the plastic guide for slides on left side by unscrewing phillips head screws. 3. Remove the grille by removing one screw and pulling the grille forward. 4. Remove the Fan Motor assembly by loosening 2 screws and disassembling the shroud. 5. Pull out the fan and separate the Fan Motor and Bracket. BRACKET MOTOR GRILLE FAN FAN MOTOR CAUTION DO NOT ATTEMPT TO REMOVE THE MULLION : REFRIGERANT LINES!

- 9 - * Ice Fan Scroll Assembly Replacement 1) Remove the plastic guide for slides on left side by unscrewing phillips head screws. 2) Pull the grille forward as shown in the second picture. 3) Disconnect wire harness of the grille. 4) Remove the scroll assembly by loosening all screws. (3) (4) Figure 12 Figure 13 Figure 15 Figure 14 3-5 DEFROST CONTROL ASSEMBLY Defrost Control assembly consists of Defrost Sensor and FUSE-M. The Defrost Sensor works to defrost automatically. It is attached to the metal side of the Evaporator and senses its temperature. At 46°F (8°C), it turns the Defrost Heater off. Fuse-M is a safety device for preventing over-heating of the Heater when defrosting. 1. Pull out the grille assembly. (Figure 10) 2. Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap. (Figure 11) Figure 10 Figure 11 GRILLE ASSEMBLY DEFROST-CONTROL ASSEMBLY Cover, Lamp LED, Assembly Case Lamp 3-6 LAMP Unplug Refrigerator, or disconnect power at the circuit breaker. If necessary, remove top shelf or shelves. 1) Release 2 screws. 2) Hold both ends with your both hands and pull it downward to remove it. 3) Use a flat tool as shown below to remove the cover lamp. 3-6-1 Refrigerator Compartment Lamp 1. Unplug refrigerator power cord form outlet. 2. Remove screw with driver. 3. Grasp the cover Lamp, pull the cover downward. 3-6-2 Freezer Compartment Lamp (1) (2) CAUTION DO NOT ATTEMPT TO REMOVE THE MULLION : REFRIGERANT LINES! 4) As shown below, use a flat tool to remove the cover lamp.

- 10 - 3-7 MULTI DUCT 1. Remove the upper and lower Caps by using a flat screwdriver, and remove 2 screws. (Figure 16) 2. Disconnect the lead wire on the bottom position. 3-8 MAIN PWB 1) Loosen the 4 screws on the PWB cover. Figure 16 3-9 DISPENSER 1) Pull out the darin 2) Hold the inner side of cover dispenser with both hands at the handle side to pull it out forward. 2) Remove the PWB cover 3) Disconnect wire harness and replace the main PWB in the reverse order of removal. CAUTION : When replacing the dispensor cover in the reverse order of removal, be careful that the lead wire does not come out and the water tube is not pinched by the dispensor, 3) If nozzle is interfered with button , push and pull out the bottom of button. 4) Rmove the connected part of Lead wire. 3-10 DISPLAY PCB As shown below, remove 1 case PCB fixing screw. Remove the display PCB fixing screw. 3-11 ICE BUTTON ASSEMBLY 1) Remove the screw fixing the button lever. 2) Push the spring from the hanging hook to remove it. 3) Apply some pressure to the rib in ① direction and lift the button in ② direction. 3-12 FUNNEL REPLACEMENT Pull down and forward. Case, PCB Display PCB Button Lever

LG LMX25984ST Service Manual Repair Guide

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