LG DLG5988B Service Manual

LG DLG5988B Manual

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  • LG DLG5988B | Service Manual - Page 1
    Website:http://www.LGservice.com [For U.S.A] www.lg.ca [For Canada] ELECTRIC & GAS DRYER SERVICE MANUAL CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES CORRECTLY BEFORE OFFERING SERVICE. MODEL : DLE5977W/DLG5988W DLE5977B/DLG5988B DLE3777W/DLG3788W
  • LG DLG5988B | Service Manual - Page 2
    Feb. 2004 PRINTED IN KOREA P/No.:3828EL3005A
  • LG DLG5988B | Service Manual - Page 3
    IMPORTANT SAFETY NOTICE The information in this service guide is intended for use by individuals possessing adequate backgrounds of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in personal injury and property damage. The manufacturer or seller
  • LG DLG5988B | Service Manual - Page 4
    GAS SETTING (NATURAL GAS, PROPANE GAS 27 11. DISASSEMBLY INSTRUCTIONS 29 12. EXPLODED VIEW ...36 12-1. CONTROL PANEL & PLATE ASSEMBLY 36 12-2. CABINET & DOOR ASSEMBLY 37 12-3-1. DRUM & MOTOR ASSEMBLY : ELECTRIC TYPE 38 12-3-2. DRUM & MOTOR ASSEMBLY : GAS TYPE 39 13. REPLACEMENT PARTS LIST
  • LG DLG5988B | Service Manual - Page 5
    ) 5400W (22.5A) 15W (125mA) AC 120V AC 240V ( ELECTRIC TYPE) AC 120V GAS VALVE 13W (110mA) X 2 AC 120V ( GAS TYPE) CONTROL TYPE Electronic DRUM CAPACITY 7.3 cu.ft. Weight (lbs): Net / Gross 126 / 144 No. of Programs 9 7 No. of Dry Option 5 5 No. of Temperature Controls 5 5 No. of
  • LG DLG5988B | Service Manual - Page 6
    2 FEATURES AND BENEFITS DLE5977W/DLG5988W/DLE5977B/DLG5988B DLE3777W/DLG3788W 5
  • LG DLG5988B | Service Manual - Page 7
    Review the following options to determine the appropriate electrical connection for your home: 3-wire receptacle (NEMA type10-30R) Use the instructions at this section if your home has a 3-wire receptacle (NEMA type 10-30R) and you will be using a UL listed, 120/240 volt minimum, 30 amp, dryer
  • LG DLG5988B | Service Manual - Page 8
    the hooked ends together and screw tightly. 6. Tighten strain relief screws. 7. Place the tab of terminal block cover into slot of dryer rear panel. Make sure cover with screw. 1. Take off center terminal block screw 2. Put the hooked end of the neutral wire(white) of power supply cable under the
  • LG DLG5988B | Service Manual - Page 9
    permit the connection of a frame-grounding conductor to the c neutral wire, use these instructions. If your local codes or ordinances do not allow the connection of a frame-grounding 5. Insert tab of terminal block cover into slot of dryer rear panel. Secure cover with hold-down screw. 8
  • LG DLG5988B | Service Manual - Page 10
    other wires to outer terminal block screws. Tighten screws. 6. Tighten strain relief screws. 7. Insert tab of terminal block cover into slot of dryer rear panel. Secure cover with hold-down screw. b c a a. External ground connector - Dotted line shows position of NEUTRAL ground wire before being
  • LG DLG5988B | Service Manual - Page 11
    connection of a frame-grounding conductor to the neutral wire, use the instructions under this section. 1. Remove center terminal block screw. 2. Remove strain relief screws. 5. Insert tab of terminal block cover into slot of dryer rear panel. Secure cover with hold-down screw. 6. Connect a separate
  • LG DLG5988B | Service Manual - Page 12
    - Use only if allowed by local codes (Use Design A.G.A. Certified Connector) 2 1/8" N.P.T. Pipe Plug (for checking inlet gas pressure) 3 Equipment Shut-Off Valve-Installed within 6' (1.8 m) of dryer 4 Black Iron Pipe Shorter than 20' (6.1 m) - Use 3/8" pipe Longer than 20' (6.1 m) - Use 1/2" pipe
  • LG DLG5988B | Service Manual - Page 13
    (47±5°C) 3Hr AIR DRY - - 30min Saturation No heater N/A N/A Load Motor Heater Off Time: 6min On Time: 10sec Temperature Control for each cycle * Sensor dry : "Dry Level" is set by users. ** Manual dry : "Temperature control" is set by users. Default settings can be adjusted by users. 12
  • LG DLG5988B | Service Manual - Page 14
    ( Auto reset) • Check Top Marking : N85 4. Lamp holder Test Procedure Check result Remark Measure resistance of terminal If thermal fuse is open must • Heater case- to terminal be replaced Safety Open at 266 ± 12°F (130 ± 7°C) Resistance value ∞ • Electric type Auto reset -31°F (-35
  • LG DLG5988B | Service Manual - Page 15
    : 10Ω • Heater case Hi limit • Electric type • See Page 13 10. Gas valve valve 1 Measure resistance of the following terminal Valve 1 terminal Valve 2 terminal • Gas type Resistance value : > 1.5kg ~ Resistance value : > 1.5~2.5kg 11. Igniter valve 2 Measure resistance of terminal to terminal
  • LG DLG5988B | Service Manual - Page 16
    at 158 ± 9°F (70 ± 5°C) Check result Resistance value ∞ Continuity < 1Ω Remark • Gas type • Gas funnel Measure resistance of terminal to terminal Open at 212 ± 12°F (100 ± 7°C) Manual reset If thermal fuse is open must be replaced Resistance value ∞ Continuity < 1Ω • Gas type • Gas funnel 15
  • LG DLG5988B | Service Manual - Page 17
    6 MOTOR DIAGRAM AND SCHEMATIC NOTE When checking Component, be sure to turn Power off, then do voltage discharge sufficiently. Contact On / Off by Centrifugal Switch STOP MODE (When Motor does not operate) RUN MODE (Motor operates) Centrifugal switch Centrifugal switch (Pull Drive forward) 16
  • LG DLG5988B | Service Manual - Page 18
    7 CONTROL LAY - OUT PWB ASSEMBLY DISPLAY LAY-OUT MODEL DISPLAY AS DIAGNOSTIC TEST MODEL DLE5977W/B DLG5988W/B DLE3777W DLG3788W OP 1 X X X X OPTION PART OP 2 OP 3 OP 4 OP 5 X X O X X O O X X X X X X O X X LED OP 6 DISPLAY P/No X 18:FO 6871EC1115A X 19:FO 6871EC1115B X 18
  • LG DLG5988B | Service Manual - Page 19
    8 WIRING DIAGRAM ELECTRIC DRYER WIRING DIAGRAM GAS DRYER WIRING DIAGRAM 18
  • LG DLG5988B | Service Manual - Page 20
    (2700W) GAS TYPE Motor + Valve ELECTRIC TYPE Motor + Heater 1 +Heater 2 (5400W) GAS TYPE Motor Type Current Temp. Current Temp. (5 ~ 70) ELECTRIC TYPE : Heater runs GAS TYPE : GAS Valve runs (Display the Temperature of Inside drum.) Gas valve See test 7 4 times Control Off During check, Motor
  • LG DLG5988B | Service Manual - Page 21
    electric shock. Trouble Symptom No power was applied to Controller. (LED, Display off) Measurement Condition With Dryer Power On; Connector linked to Controller. Check Led) YES Check if the Controller wire is disconnected. Check if Terminal Block and Power Cord are connected (Check Plug ).
  • LG DLG5988B | Service Manual - Page 22
    of Table 1 when measuring resistance between terminals after separating Harness NO From Thermistor assembly Connector. • Replace Thermistor. YES Check Harness-linking connector. Table 1. Resistance for Thermistor Temperature. Air TEMP.[°F (°C)] RES. [kΩ] Air TEMP.[°F (°C)] RES. [kΩ] Air TEMP
  • LG DLG5988B | Service Manual - Page 23
    door switch knob. • Check Door Switch. • Check Harness connection. • Replace Control. (Relay check) • Check Controller connector. • Replace Outlet • Thermostat. (Refer to 'Component') • Check Idler Assembly. • Drum Belt cuts off • Drum Belt takes off from • Motor Pulley. • Replace Idler Switch. 22
  • LG DLG5988B | Service Manual - Page 24
    Trouble Symptom Degree of dryness does not match with Dry Level. Measurement Condition Turn the Dryer's Power Off, then measure resistance. Take connector's Pin (BLUE wire) and Pin (ORANGE wire)? YES • Replace Control and Check. Normal Condition Table 2. IMC Ratio and Display Value / Voltage (
  • LG DLG5988B | Service Manual - Page 25
    opening Door, Drum motor and Trouble Symptom Heater run continuously; Door Close is not sensed. (Drum motor will not operate. Display will flash at 0.5 second intervals.) Measurement Condition After turning Dryer Power Off, measure resistance. Measure while Door is closed. Check if resistance is
  • LG DLG5988B | Service Manual - Page 26
    Electric Type Caution Before measuring resistance, be sure to turn Power off, and do voltage discharge. (When discharging, contact the metal plug of Power cord with earth line.) Trouble Symptom While operating, Heating will not work. Drying time takes NO • Replace Heater. YES Check if the
  • LG DLG5988B | Service Manual - Page 27
    , to avoid electric shock. Trouble Symptom While operating, Heating will not work. Drying time takes longer. Measurement Condition With dryer power on Valve 1 Igniter Valve 2 Power On & Start (Normal Cycle) NO When measuring Valve 1 voltage, More than AC 90V? YES NO • Check thermostat Hi
  • LG DLG5988B | Service Manual - Page 28
    will result in fire. Conversion must be made by a qualified technician. Initially, Natural Gas mode is set. Propane Gas Orifice is on sale as a Service Part to authorized servicers only. STEP 1 : VALVE SETTING Full open "Change screw" STEP 2 : ORIFICE CHANGE Orifice Close "Change screw" Remove
  • LG DLG5988B | Service Manual - Page 29
    KEY PUSH "VALVE 1" ON IGNITE ON IGNITE TEMPERATURE ABOUT 370"F YES FRAME DETECT OPEN IGNITE OFF "VALVE 2" ON GAS IGNITION YES DRYING NO NO FRAME DETECT CLOSE "VALVE 2" OFF GAS IGNITION START VALVE 1 IGNITER FRAME DETECT VALVE 2 ON ON CLOSE OFF OFF OPEN ON GAS IGNITION GAS VALVE STRUCTURE 28
  • LG DLG5988B | Service Manual - Page 30
    11 DISASSEMBLY INSTRUCTIONS Disassemble and repair the unit only after pulling out power plug from the outlet. 1. Remove 3 screws on the plate upper. 2. Push the top plate 3. Open the top plate 29
  • LG DLG5988B | Service Manual - Page 31
    1. Remove 2 screw on the control panel frame. 2. Disconnect the connectors. 3. Pull the control panel assembly. 4. Remove 9 screws on the PWB(PCB) assembly, display. 5. Remove 4 screws on the PWB(PCB) assembly, main. 6. Disassemble the control panel assembly. 30
  • LG DLG5988B | Service Manual - Page 32
    1. Open the top plate. 2. Open the control panel assembly. 3. Open the door assembly. 4. Remove 2 screws. 5. Remove 4 screws from upper side. 6. Disconnect the harness of door switch. 31
  • LG DLG5988B | Service Manual - Page 33
    ]. -2 3. Disengage belt from motor and idler pulleys. 4. Carefully remove Drum out through front of dryer. 1. Open the door. 2. Remove the screw holding the drum lamp shield in place. 3. Slide the shield up and remove. 4. Remove the bulb and replace with a 15 watt, 120 volt candelabra-base bulb
  • LG DLG5988B | Service Manual - Page 34
    4" elbow with 4" duct. Wrap duct tape around joint. DUCT TAPE 5. Insert duct assembly, elbow first, through the side opening and connect the elbow to the dryer internal duct. 33
  • LG DLG5988B | Service Manual - Page 35
    1. Remove the filter. 2. Remove 3 screws. 3. Pull the grill. 4. Disconnect electro sensor. 1. Open the top plate. 2. Remove the Cover Cabinet and Tub Drum [Front]. 3. Remove the Drum assembly. 4. Remove 2 screws and cover(Air guide). 5. Remove the bolt and washer. 6. Pull the fan. 7. Disconnect the
  • LG DLG5988B | Service Manual - Page 36
    Remove filter and 2 screws. 4. Pull the air duct towards the front. 1. Open the top plate. 2. Remove the Cover Cabinet and Tub Drum [Front]. 3. Remove the Drum assembly and Tub Drum [Rear]. 4. Disconnect Air duct from the Tub Drum [Front]. 5. Remove the roller from the Tub Drum [Front] and Tub Drum
  • LG DLG5988B | Service Manual - Page 37
    12 EXPLODED VIEW 12-1. Control Panel & Plate Assembly A130 A210 A120 A110 36
  • LG DLG5988B | Service Manual - Page 38
    12-2. Cabinet & Door Assembly A700 A390 A330 A320 A310 A800 A600 A500 A400 A410 A460 37
  • LG DLG5988B | Service Manual - Page 39
    12-3-1. Drum & Motor Assembly : Electric Type F200 K400 K120 K140 K100 K130 K250 K310 K330 K320 K340 K221 K210 K250 K550 K560 K610 K240 F130 F110 F140 K510 K520 K640 K650 38
  • LG DLG5988B | Service Manual - Page 40
    12-3-2. Drum & Motor Assembly : Gas type K120 F200 K400 K100 K130 K221 K210 K140 K250 K310 K330 K320 K340 K250 K550 K560 K610 K240 M160 M171 M170 M140 M110 M181 M150 M240 M220 M190 M180 M230 K510 K520 39 K640 K650 M210 M171 : Propane Gas orifice M170 : Natural Gas orifice
  • LG DLG5988B | Service Manual - Page 41
    13 REPLACEMENT PARTS LIST CAUTION : Before replacing any part of these components, read carefully the safety precautions in this manual. ¡Æ Note : S(Safety Parts), AL(Alternative parts) LG MODEL : TD- V 10050E, TD- V 10051E S AL LOC DESCRIPTION MODEL P/N DLE5977W DLE3777W A500 CABINET
  • LG DLG5988B | Service Manual - Page 42
    ,BURNER PIPE ASSEMBLY VALVE ASSEMBLY,GAS PIPE ASSEMBLY SEAL ORIFICE(natural gas) ORIFICE(propane gas) CONNECTOR (MECH),PIPE IGNITER HARNESS,PWB TUB ASSEMBLY,DRUM SEAL LIFTER BELT,POLY-V TUB,DRUM[FRONT] LAMP ASSEMBLY ROLLER ASSEMBLY DUCT ASSEMBLY COVER,GUIDE SENSOR GUIDE,FILTER FILTER ASSEMBLY,LINT
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Website:http://www.LGservice.com [For U.S.A]
www.lg.ca [For Canada]
ELECTRIC & GAS DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
TROUBLES CORRECTLY BEFORE
OFFERING SERVICE.
MODEL :
DLE5977W/DLG5988W
DLE5977B/DLG5988B
DLE3777W/DLG3788W