LG LMX25984ST/01 User manual
REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL : LMX25984ST /01
LMX25984WB /01
LMX25984SW /01
ENC(Engineering Change Number)
- 2 -
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
315A
304A
312A
323B
230B
230A
231B
231A
303A
619E
410G
500H
500A
413A
319C
319A
300A
Loc No. Part Name
LMX25984 /01
- 3 -
CONTENTS
SAFETY PRECAUTIONS ....................................................................................................................................................... 2
1. SPECIFICATIONS .............................................................................................................................................................. 3
2. PARTS IDENTIFICATION .................................................................................................................................................. 4
3. DISASSEMBLY ............................................................................................................................................................. 5-14
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 .............................................................................. 14-17
4. ADJUSTMENT ............................................................................................................................................................ 17-19
5. CIRCUIT DIAGRAM .......................................................................................................................................................... 20
6. TROUBLESHOOTING (Error Code) ................................................................................................................................ 21
7. PCB PICTURE ............................................................................................................................................................. 22-23
8. TROUBLESHOOTING WITH ERROR DISPLAY ........................................................................................................ 24-32
9. TROUBLESHOOTING WITHOUT ERROR DISPLAY ................................................................................................. 33-40
10. REFERENCE ............................................................................................................................................................. 41-46
11. COMPONENT TESTING INFORMATION ................................................................................................................ 47-53
12. TROUBLESHOOTING (Compressor) ...................................................................................................................... 54-60
13. OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER ........................................................................ 61-63
14. DESCRIPTION OF FUNCTION & CIRCUIT OF MICOM ........................................................................................... 64-67
15. EXPLODED VIEW & REPLACEMENT PARTS LIST .................................................................................................... 68-
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 -
1. SPECIFICATIONS
Opaque Drawer Type
Linear
Fin Tube Type
Spiral Condenser
R-134a (145 g)
FREOL 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 3/4X 34 1/4X 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 direction and lift the
button in direction.
3-12 FUNNEL REPLACEMENT
Pull down and forward.
Case, PCB Display PCB
Button Lever
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