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LG LSCE365ST Service Manual

Ceramic glass radiant cooktop
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삼
흥
정
판
Ceramic Glass Radiant Cooktop
SERVICE MANUAL
MODEL: LSCE365ST
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL41578005
UPCE3664ST
Internal Use Only
Website: http://biz.lgservice.com
May, 2010
Printed in Korea

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  • Page 1 삼 흥 정 판 Internal Use Only Website: http://biz.lgservice.com Ceramic Glass Radiant Cooktop SERVICE MANUAL MODEL: LSCE365ST UPCE3664ST CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. May, 2010 P/NO : MFL41578005 Printed in Korea...

  • Page 2: Table Of Contents

    • USING THE BRIDGE COOKING ZONES - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28 Copyright © 2008 LG Electronics. Inc. All right reserved.
  • Page 3 REPLACEMENT PARTS LIST - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 80-81 LGE Internal Use Only - 3 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 4: Safety Precautions

    SAFETY PRECAUTIONS • Repairs of the appliance should be carried out by a authorized service technician only. Incorrect repairs may result in dangerous situations. If you need repairs, contact an LG Service Center or your dealer. • If the power cord is defective, it must be replaced by a qualified service agent with a UL listed 150°C AWG 8 wire or one with a higher grade.
  • Page 5 WARNING: Never use your appliance for warming or heating a room. LGE Internal Use Only - 5 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 6 • Young children should be supervised to ensure that they do not play with the appliance. • Accessible parts may become hot during use. Young children should be kept away. Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 • Never leave prepared food on the Cooking Zones. Boilovers cause smoking and greasy spillovers that may ignite, or a pan that has boiled dry may melt or become damaged. LGE Internal Use Only - 7 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 8 • Always turn off all controls when cooking is completed. • Be sure you know which control pads operate each surface unit. Make sure you turned on the correct surface unit. Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only...
  • Page 9 NOTE: There is a risk of burning yourself when the glass scraper is used on a hot cooking zone! LGE Internal Use Only - 9 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 10 CAUTION: Before disposing of old appliances please make them inoperable so they cannot be a source of danger. READ AND FOLLOW THIS SAFETY INFORMATION CAREFULLY. SAVE THESE INSTRUCTIONS Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Specifications

    Countertop Cutout Dimensions ⁄ (878 mm) (W) x 20 ⁄ (517 mm) (D) Shipping Weight About 54.43lb (24.68kg) LGE Internal Use Only - 11 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 12: Installation Instructions

    Be sure the bottle of cleaner and conditioner packed in the literature bag is left where the user can find it easily. It is important that the ceramic-glass cooktop be pretreated before use. See CARE AND CLEANING. Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only...

  • Page 13: Preparing The Installation Location

    Allow 2 (50 mm) space below the armored cable opening to clear the electric cable and allow space for installation of the junction box on the wall at the back of the cooktop. LGE Internal Use Only - 13 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 14: Dimensions And Clearances

    5 (127 mm) beyond the face of the cabinets. Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only...

  • Page 15: Electrical Connections

    Then make the electrical connection as follows. LGE Internal Use Only - 15 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 16 (white) wire is prohibited, you must use a 4-wire power supply cable. Failure to heed this warning may result in electrocution or other serious personal injury. Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only...
  • Page 17 NOTE: Do not use caulking compound. The cooktop must be removable, should service be required. LGE Internal Use Only - 17 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 18: Final Check

    CAUTION: Do not touch cooktop glass or Cooking Zones. They may be hot enough to cause burns. Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only...

  • Page 19: Cookware Tips

    (the cookware bottom must be slightly concave at Room Temperature) LGE Internal Use Only - 19 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 20: Selecting Cookware (Cont.)

    • The base of the pot should have the same size as the cooking zone. • Using a pressure cooker shortens the cooking times by up to 50%. Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...

  • Page 21: Cleaning And Care

    Step. 3 As a final step, clean with clear water and wipe the cooktop surface with a clean, dry paper towel. LGE Internal Use Only - 21 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 22 2. If pots with a thin overlay of aluminum or copper are allowed to boil dry, the overlay may leave black discoloration on the cooktop. This should be removed immediately before heating again or the discoloration may be permanent. Copyright © 2008 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only...

  • Page 23: Description Of The Feature

    It will remain on, even after the control is turned off, until the area has cooled. LGE Internal Use Only - 23 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 24: Operating Instructions

    NOTE: Once the Cooking Zone has been selected with the ON pad, the power level must be selected within 10 seconds with the Element power settings. Otherwise, the Cooking Zone will turn off for safety. Copyright © 2008 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only...

  • Page 25: Setting The Controls (Cont.)

    Avoid touching the Cooking Zone when this indicator is shown. Although the cooktop is OFF, the light will stay lit until the cooktop has cooled down. LGE Internal Use Only - 25 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 26 To change the power level: Touch the ON pad and select a new number on the element power settings. The indicator light above WARM will turn OFF. Copyright © 2008 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only...

  • Page 27: Using The Warming Zone

    Pastries Breads Breakfast Foods (Eggs) Delicate Foods Soups (Cream) Stews Vegetables Meats Sauces Gravies Hot Beverages Soups (Liquid) LGE Internal Use Only - 27 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 28: Using The Bridge Cooking Zones

    Touch the ON pad again to activate the center and middle areas (Dual Element). The indicator light below the D (Dual) will turn ON. Copyright © 2008 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...

  • Page 29: Using The Dual Cooking Zones

    The power level displayed may be different from the actual power level at the high temperature range. To prevent the cooktop from overheating, the power level is controlled automatically. LGE Internal Use Only - 29 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 30: Electric Circuit Drawing

    ELECTRIC CIRCUIT DRAWING For model : LSCE365ST / 00 Copyright © 2008 LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only Only for training and service purposes...
  • Page 31 ELECTRIC CIRCUIT DRAWING For model : LSCE365ST / 01 UPCE3664ST /00 LGE Internal Use Only - 31 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 32: Disassembly

    5. Remove the ceramic glass part. 5. Remove the ceramic glass part. Front Front Glass BKT Glass BKT Rear Rear Front Front Copyright © 2008 LG Electronics. Inc. All right reserved. - 32 - LGE Internal Use Only Only for training and service purposes...

  • Page 33: Bridge Element Assembly

    1. Remove the 14 terminals from the Bridge element. For model : LSCE365ST / 00 Black Yellow/Yellow Blue Red/Black Black Black Yellow/Yellow Brown Pink LGE Internal Use Only - 33 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 34 For model : LSCE365ST / 01 UPCE3664ST /00 Yellow Black Yellow/Yellow Blue Red/Blue Black Blue Yellow Yellow/Yellow Pink 2. Lift the Bridge element. Copyright © 2008 LG Electronics. Inc. All right reserved. - 34 - LGE Internal Use Only Only for training and service purposes...

  • Page 35: Triple Element Assembly

    For model : LSCE365ST / 01 UPCE3664ST /00 Yellow Yellow/Yellow Black Sky Blue 2. Lift the Triple element. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 35 - Only for training and service purposes...

  • Page 36: Dual Element Assembly

    For model : LSCE365ST / 00 For model : LSCE365ST / 01 UPCE3664ST /00 Yellow Brown Blue Black 2. Lift the Dual element. Copyright © 2008 LG Electronics. Inc. All right reserved. - 36 - LGE Internal Use Only Only for training and service purposes...

  • Page 37: Warm Element Assembly

    2. Remove the 2 terminals from the warming zone. For model : LSCE365ST / 00 For model : LSCE365ST / 01 UPCE3664ST /00 LGE Internal Use Only - 37 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 38: Controller Pcb Assembly

    1. Remove PCB by releasing the 4 support tabs. 2. Take off 3 connectors as followed below pictures. Copyright © 2008 LG Electronics. Inc. All right reserved. - 38 - LGE Internal Use Only Only for training and service purposes...
  • Page 39 - Failure to do so can result in severe personal injury, death or electrical shock. 3. Remove terminals from the PCB. (LSCE365ST /00 model is 12 terminals, LSCE365ST /01 model is 19 terminals) 4. Remove the 2 screws from the fan cover. 5. Lift up the main PCB assembly.
  • Page 40 PCB mold base, remove 2 screws. 8. Take out the key supporter hooked by lifting. Remove the interface PCB assembly from supporter, key PCB Copyright © 2008 LG Electronics. Inc. All right reserved. - 40 - LGE Internal Use Only...

  • Page 41: Base Assembly

    , inner barrier : 4EA , outer barrier : 4EA 2. Lift the 1 Insulator & 2 barriers. LGE Internal Use Only - 41 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 42 3. Remove the 4 screws from bracket. 4. Remove the 2 nuts and 2 washers from terminal block. 5. Lift the Insulator & Unfasten the harness. Copyright © 2008 LG Electronics. Inc. All right reserved. - 42 - LGE Internal Use Only...
  • Page 43 8. Remove the 5 screws of fan cover. < NOTE > If you remove fan assembly, you have to remove fan connector from PCB. LGE Internal Use Only - 43 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 44: Assembly

    PCB mold base, screw down 2 holes. 2. Put PCB assembly under hook. NOTE : If PCB assembly have residual board under Triac, remove that. Copyright © 2008 LG Electronics. Inc. All right reserved. - 44 - LGE Internal Use Only...
  • Page 45 3. Screw down 6 holes of bracket, mount. 4. Screw down 4 holes on the PCB. LGE Internal Use Only - 45 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 46: Key Pcb Assembly

    - Failure to do so can result in severe personal injury, death or electrical shock. 1. Put PCB base boss into circle hole of KEY PCB. Copyright © 2008 LG Electronics. Inc. All right reserved. - 46 - LGE Internal Use Only...

  • Page 47: Key Pcb Assembly & Interface Pcb Assembly

    1. After adjusting hole for the interface PCB to supporter insert 2 screws. 2. Insert housing of CN3 in KEY PCB into CN2. LGE Internal Use Only - 47 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 48: Cover Base & Fan Motor

    1. Adjust fan hole to base cover. 2. Insert screw and tighten. Follow the order below. 3. Insert screw and tighten. Copyright © 2008 LG Electronics. Inc. All right reserved. - 48 - LGE Internal Use Only Only for training and service purposes...

  • Page 49: Insulator & Harness

    Red, Black Yellow/Yellow, Red/Black Blue Black Black Brown Red, Yellow/Yellow Red, Pink 3. Check the terminals and wire colors. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 49 - Only for training and service purposes...

  • Page 50: Insulator & Supporter

    1. Slide supporter into the insulator flange. insulator flange 2. Insert and tighten 9 screws. Copyright © 2008 LG Electronics. Inc. All right reserved. - 50 - LGE Internal Use Only Only for training and service purposes...

  • Page 51: Base Plate & Terminal Block

    1. Adjust terminal block hole to the base plate hole. 2. Screw down residual hole of terminal block. LGE Internal Use Only - 51 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 52: Base Plate & Insulator

    1. Put heat insulation on the base plate. 2. Place plate over insulation. 3. Align fastener holes on plate with base plate. Copyright © 2008 LG Electronics. Inc. All right reserved. - 52 - LGE Internal Use Only Only for training and service purposes...
  • Page 53 4. Attach screws to the plate in Hole # 1 then Hole # 2. (As shown) 5. Attach remaining fasteners. LGE Internal Use Only - 53 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 54: Terminal Block & Powercord

    2. After assembling terminal ring, insert terminal ring of harness. 3. Be sure to secure all fasteners tightly. WASHER Copyright © 2008 LG Electronics. Inc. All right reserved. - 54 - LGE Internal Use Only Only for training and service purposes...

  • Page 55: Base Plate Assembly & Insulator

    2. Assembly bushing to the wiring harness and attach between the thermal insulator. 3. After inserting the bushing tighten all 4 screws. LGE Internal Use Only - 55 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 56: Motor Bracket & Thermal Insulator

    1. Insert thermal insulator in Motor bracket. 2. Attache screws to base plate assembly. 3. Following the direction above assemble the other 3 insulators. Copyright © 2008 LG Electronics. Inc. All right reserved. - 56 - LGE Internal Use Only...

  • Page 57: Fan Assembly & Base Plate Assembly

    3. Screw down fan base with 5 screws. < NOTE > If Main PCB assembly exist, screw down 2 holes of fan cover. LGE Internal Use Only - 57 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 58: Base Plate Assembly & Main Pcb Assembly

    2. Insert residual housings of harness into wafer as marked color on Main PCB assembly. For model : LSCE365ST / 00 For model : LSCE365ST / 01 UPCE3664ST /00 Copyright © 2008 LG Electronics. Inc. All right reserved. - 58 - LGE Internal Use Only Only for training and service purposes...

  • Page 59: Main Pcb Assembly & Key Pcb Assembly

    < NOTE > If fan cover exist, screw down 2 holes of assembly into PCB Base Mold. fan cover. LGE Internal Use Only - 59 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 60: Base Plate Assembly & Warm Element Assembly

    UPCE3664ST /00 2. Screw down supporter of warm element assembly into 2 holes. < NOTE > Check the silicon rubber. Copyright © 2008 LG Electronics. Inc. All right reserved. - 60 - LGE Internal Use Only Only for training and service purposes...

  • Page 61: Base Plate Assembly & Bridge Element Assembly

    1. Insert terminal in tab of Bridge element. For model : LSCE365ST / 00 Black Yellow/Yellow Blue Red/Black Black Black Yellow/Yellow Brown Pink LGE Internal Use Only - 61 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 62 Yellow Black Yellow/Yellow Blue Red/Blue Black Blue Yellow Yellow/Yellow Pink 2. Put Bridge element assembly on the supporter. Copyright © 2008 LG Electronics. Inc. All right reserved. - 62 - LGE Internal Use Only Only for training and service purposes...

  • Page 63: Base Plate Assembly & Triple/Dual Element Assembly

    < In case of Triple element > < In case of Dual element > Red/Red Yellow Yellow/Yellow Brown Black Blue Blue Black Yellow LGE Internal Use Only - 63 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 64 < In case of Dual element > Yellow Yellow/Yellow Yellow Brown Blue Black Sky Blue Black 2. Put Triple/Dual element assembly on the supporter. Copyright © 2008 LG Electronics. Inc. All right reserved. - 64 - LGE Internal Use Only Only for training and service purposes...

  • Page 65: Base Plate Assembly & Top Plate Assembly

    2. After screw down 15 holes of base plate, fix 4 bracket of installation < Location of glass bracket holes > < Location of Installation brackets > Rear Front LGE Internal Use Only - 65 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 66: Component Test

    3. Touch the ohmmeter test leads to the element terminals. The meter should indicate 571 Ω ± 10% Normal: Approximately 571 Ω, If not replace Copyright © 2008 LG Electronics. Inc. All right reserved. - 66 - LGE Internal Use Only Only for training and service purposes...
  • Page 67 Normal: Approximately 32 Ω, If not replace Normal: Approximately 72 Ω, If not replace Normal: Approximately 32 Ω, If not replace LGE Internal Use Only - 67 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 68 (0 Ω) If not replace <Normal> Below (150˚F/65.5˚C) open circuit (infinite). Above (150˚F/65.5˚C) continuity (0 Ω) If not replace Copyright © 2008 LG Electronics. Inc. All right reserved. - 68 - LGE Internal Use Only Only for training and service purposes...
  • Page 69 Above (150˚F/65.5˚C) With the temperature above (150˚F/65.5˚C), the continuity (0 Ω) meter should indicate continuity (0Ω). If not replace LGE Internal Use Only - 69 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 70 With the temperature above (150˚F/65.5˚C), the Above (150˚F/65.5˚C) meter should indicate continuity (0 Ω). continuity (0 Ω) If not replace Copyright © 2008 LG Electronics. Inc. All right reserved. - 70 - LGE Internal Use Only Only for training and service purposes...

  • Page 71: Composition Of Control

    Holder,Display (LOC : 249302), Indicator (LOC : 235202) Holder,Display (LOC : 249301) Interface PCB (LOC : 268714) Indicator (LOC : 235201) LGE Internal Use Only - 71 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 72: Failure Mode Flow Chart

    Replace the Main PCB CAUTION • Be sure to disconnect power before servicing. • Wear gloves while servicing. Copyright © 2008 LG Electronics. Inc. All right reserved. - 72 - LGE Internal Use Only Only for training and service purposes...
  • Page 73 Replace the defective harness CAUTION • Be sure to disconnect power before servicing. • Wear gloves while servicing. LGE Internal Use Only - 73 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 74 Continued on the next page CAUTION • Be sure to disconnect power before servicing. • Wear gloves while servicing. Copyright © 2008 LG Electronics. Inc. All right reserved. - 74 - LGE Internal Use Only Only for training and service purposes...
  • Page 75 CAUTION • Be sure to disconnect power before servicing. • Wear gloves while servicing. LGE Internal Use Only - 75 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 76: Failure Mode

    • Check the connection of CN2 on Interface PCB. Flashing • Low voltage detection • This represents low voltage to the cooktop. Call a licensed electrician. Copyright © 2008 LG Electronics. Inc. All right reserved. - 76 - LGE Internal Use Only Only for training and service purposes...

  • Page 77: Trouble Shooting

    With the heavy use the fan may continue to run after the controls are turned off until the cooktop has cooled. LGE Internal Use Only - 77 - Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 78: Exploded View

    #EV# EXPLODED VIEW MODEL: Customer Model Product Code SVC Model 2057 2058 3095 2402 6007 2403 2030 2009 2050 2005 2031 6032 2071 6044 W101 2006 6031 2081 2080 3301 2023 3303 3302 6065 3022 3006 6042 6065 6041 3401 5014 W241 6043...

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