Benutzeranleitung / Produktwartung LMV1625W des Produzenten LG Electronics
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MICROW A VE OVEN SE R VICE MANUAL MODEL : LMV1625B LMV1625W CAUTION BEFORE SERVICING THE UNIT , READ THE SAFETY PRECAUTIONS IN THIS MANUAL. website: http://www .
CAUTION SAFETY PRECAUTIONS PRECAUTIONS T O BE OBSER VED BEFORE AND DURING SER VICING T O A VOID POSSIBLE EXPOSURE T O EXCESSIVE MICROW A VE ENERGY a. Do not operate or allow the oven to be operated with the door open.
FOREWORD Read this Manual carefully. Failure to adhere to or observe the information in this Manual may result in exposing yourself to the Microwave Energy normally contained within the oven cavity. T ABLE OF CONTENTS (Page) SAFETY PRECAUTIONS .......
1-1 SPECIFICA TIONS Rated Power Consumption .................................... 1,500W maximum (Microwave oven+Cook top lamp+Ventilation fan) Microwave Output .................................................. 1,000W (IEC 60705) Adjustable 100W through 1000W, 10 steps Frequency .
2-1 CAUTIONS • DO NOT operate on a 2-wire extension cord during repair and use. • NEVER TOUCH any oven components or wiring during operation. • BEFORE TOUCHING any parts of the oven, always remove the power plug from the outlet. • For about 30 seconds after the oven stops, an electric charge remains in the high voltage capacitor.
3-1 INST ALLA TIONS PRECAUTIONS ON INST ALLA TION A. Plug the power supply cord into a 120V AC, 60Hz, single-phase power source with a capacity of 15A or 20A. B. Avoid placing the unit in a location where there is direct heat or splashing water. C. Install the unit on the mounting plate firmly.
4-1 OPERA TING INSTRUCTIONS CONTROL P ANEL 4 7 10 14 15 16 19 9 21 24 26 23 1 5 8 17 20 22 25 18 11 13 6 3 2 12.
4-2 CONTROL P ANEL INSTRUCTIONS 1. DISPLAY: The Display includes a clock and indicators to tell you time of day, cooking time settings and cooking functions selected. 2. POPCORN: Touch this pad when popping popcorn in your microwave oven. 3. PIZZA: Touch this pad to reheat 1 to 3 slices.
5-1 OVERALL CIRCUIT DIAGRAM SCHEMA TIC DIAGRAM.
5-2 MA TRIX CIRCUIT FOR TOUCH KEY BOARD TIME COOK FAN HI/LO/OFF HELP COOK POPCORN AUTO DEFROST LIGHT HI/LO/OFF CUSTOM SET REHEAT POTATO KITCHEN TIMER CLOCK LESS Ez On BEVERAGE POWER LEVEL CUSTOM COOK LIGHT TIMER N.C PIZZA HOLD WARM T/TABLE ON/OFF STOP CLEAR START N.
6-1 GENERAL INFORMA TION FOR SERVICE GENERAL PRECAUTIONS IN USE A. Never operate the unit when it is empty. Operating the oven with no load may shorten the life of the magnetron. Whenever cooking dry foods (dried fish, bread, etc.) or a small amount of food, be sure to put a glass of water into the cooking compartment.
7-1 SER VICE INFORMA TION PRECAUTIONS AND REP AIR SERVICE TIPS PRELIMINAR Y A. SINCE NEARLY 2,100 VOLTS EXISTS IN SOME CIRCUITS OF THIS UNIT REPAIRS SHOULD BE CARRIED OUT WITH GREAT CARE. The filament leads of magnetron carry High Voltage with respect to ground.
7-2 CAUTIONS • Be sure to check microwave leakage prior to servicing the oven if the oven is operative prior to servicing. • The service personnel should inform the manufacture importer, or assemb.
(1) Microwave power output measurement is made with the microwave oven supplied at its rated voltage and operated at its maximum microwave power setting with a load of (1000± 5) g of potable water.
IMPORT ANT NOTES: UNIT MUST BE DISCONNECTED FROM ELECTRICAL OUTLET WHEN MAKING REPAIRS, RE-PLACEMENTS, ADJUSTMENTS AND CONTIN- UITY CHECKS. WAIT AT LEAST ONE MINUTE, UNTIL THE HIGH VOLTAGE CAPACITOR IN THE HIGH VOLTAGE POWER SUPPLY HAS FULLY DISCHARGED.
7-5 HOW TO REMOVE THE F .P .C. CONNECTOR Follow the steps below as illustrated in Figures 4 and 5 to remove the F.P.C. connector. (1) Hold the edges of the plastic fastener withthumb and forefinger. (Figure 4) (2) Lift up the lever of the plastic fastener from the terminal socket by lightly pressing the lever end with forefinger.
B. REMOVING THE OUT CASE(Figure 8) (1) Remove the vent grille by removing two screws securing it to the out case. (2) Remove two screws securing it to the front bracket. (3) Remove two screws securing it to the air duct. (4) Remove the mounting plate by turning the two screws securing it to the out case.
7-7 C REMOVING THE DOOR INTERLOCK SWITCHES (Figures 9,10) (1) Disconnect the wire leads from the interlock switches. (2) Remove two screws securing the Latch Board. (3) Make necessary replacements and check microwave energy leakage according to “ ADJUSTMENT PROCEDURE ” on page 7-12.
7-8 D. REMOVING MAGNETRON (Figures 11 Through 13) (1) Remove vertgrille. (2) Remove mount all. (3) Remove outcase. (4) Discinnect the wireleads. (5) Remove the 3 screws and Magnetron very carefully. NOTE: • When removing the magnetron, make sure that its dome does not hit any adjacent parts, or it may be damaged.
Door Screen Door Screen Figure 15 Figure 14 F . REMOVING DOOR (Figure 14) (1) Remove the vent grille by two screws securing it to the outcase loosening.
H. ASSEMBLING DOOR (1) When mounting the door assembly to the oven assembly, be sure to adjust the door assembly parallel to the chassis. Also adjust so the door has no play between the inner door surface and oven frame assembly. If the door assembly is not mounted properly, microwaves may leak from the clearance between the door and the oven.
K. REMOVING THE TURNT ABLE MOTOR (1) Remove the turntable. (2) Remove the turntable shaft VERY CAREFULLY with a slotted screwdriver. (Figure 19) (3) Remove the base plate by removing 6 screws securing it to the oven cavity. (Figure 20) (4) Disconnect the leadwire from the turntable motor terminals.
7-12 ADJUSTMENT PROCEDURES To avoid possible exposure to microwave energy leakage, adjust the door latches and interlock switches, using the following procedure. The Interlock Monitor and Primary Interlock Switch act as the final safety switch protecting the user from microwave energy.
7-13 TEST THE LATCH AND SWITCH SEQUENCE (5) Open the oven door slowly. Watch the door latch, the Secondary Switch. Release Rod and Lever on the switches to make sure they are zero to the body of the s.
7-14 A. PRIMARY INTERLOCK SWITCH TEST When the door is opened slowly, an audible click should be heard at the same time or successively at intervals and the latches should activate the switches with an audible click .
7-15 - CAUTIONS - -DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVINGING THE CABINET FROM THE UNIT. PROCEED WITH THE TESTS ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER.
7-16 COMPONENTS TEST PROCEDURES RESULTS HIGH-VOLTAGE CAPACITOR HIGH-VOLTAGE DIODE Measure the resistance: (1) Terminal to terminal Ohm- meter (2) Terminal to case Ohm- meter Measure the continuity: (1) Forward Ohm- meter (1) Reverse Ohm- meter Normal reading: Momentarily indicates several ohms, and then gradually returns to infinite ohms.
1 2 3 4 5 6 7 8 9 10 11 12 13 Figure 28 Figure 27 TIME COOK FAN HI/LO/OFF HELP COOK POPCORN AUTO DEFROST LIGHT HI/LO/OFF CUSTOM SET REHEAT POTATO KITCHEN TIMER CLOCK LESS Ez On BEVERAGE POWER LEVEL CUSTOM COOK LIGHT TIMER N.C PIZZA HOLD WARM T/TABLE ON/OFF STOP CLEAR START N.
7-18 COMPONENTS TEST PROCEDURES RESULTS RELAY2 Check for continuity of relay 2 with an ohm-meter. (Remove wire leads from relay 2 and operate the unit.) w w CAUTION : The relay connector 2(White) and 5(Red) must be correctly connected Relay 6. These two connectors are not Inter- changeable.
(2) CHECKOUT PROCEDURES FOR RELAY. - PROBLEM (A) - TT motor and oven lamp turn on without touching START key when the door is closed. Remove the mate connector of I/O CON from the circuit board.
7-20 (3) CHECKOUT PROCEDURES FOR CIRCUIT BOARD The following symptoms indicate a defective circuit board. 1) The start function fails to operate but the high voltage Systems, the interlock switches, the door sensing and the relay check good. 2) The unit with a normal relay continuously operates.
7-21 PROBLEM - A: “ PLEASE SET TIME OF DAY ” does not appear in display window when power supply cord is plugged into wall outlet. PROBLEM - B: Display does not show correct numbers and/or correct indications when programmed. Check: 1. POWER SUPPLY 2.
7-22 Resistance incorrect Check the continuity of H.V.C. (see page 7-16) Normal H.V.T. Resistance incorrect Normal H.V.C. Abnormal Replace H.V.D. Normal Magnetron Replace Magnetron Normal Normal H.V.D. Check the continuity of H.V.D. (see page 7-16) Replace H.
7-23 PROBLEM - D : No buzzing when touching the key, between stages or at end of cooking 1 Normal circuit board Check normal operation circuit board Replace circuit board Runs.
7-24 PROBLEM - E : Ventilation fan does not operate when “ FAN HIGH/LOW ” key is touched. 1 Check: 1. POWER SUPPLY 2. FUSE Runs Runs Runs Runs Contact OK NO contact Replace oven thermostat Poor co.
8-1 EXPLODED VIEW DOOR PARTS 13581A 13552A 13536A 13213A 14890A 13720D 13650A 14970A 14026A WTT021.
8-2 CONTROLLER PARTS 24810P 23572A 23506A *07 26871 1 24781M WTP018 WTT029.
OVEN CAVITY PARTS 36912C 33550L 63302A WTT022 WTT028 WTT029 331 12U 368771 WTT029 34810T 33530A 34930R 35026G 33052A *05 34890C WTT022 35230A 63303A 34810Q 34960A WTT021 *02 *01 *04 8-3.
8-4 LA TCH BOARD P ARTS 466001 43500A 466003 466001 44510A 43501A WSZ084.
8-5 INTERIOR PARTS(I) WTT021 56170D WTT028 33390G 34370T 35889A 36549S WTP013 WTT021 33740A 54810C 50CZZH WSZ002 56851D WSZ002 533001 533002 56324A WSZ002.
8-6 INTERIOR PARTS (II) 36549V 56912B 53550L 55262A 55231C 56804A WTT028 WSZ002 56930V 55006F 50FZZA 568771 56411A 340511 53550F 55892A 54930F.
8-7 INSTALLATION PARTS WSZ133 WSZ204 44360A WWZ068 63300M 65862D 65862B WSZ203 WSZ098 WWZ068 63861A WSZ136.
8-12 SCHEMA TIC DIAGRAM TIME COOK FAN HI/LO/OFF HELP COOK POPCORN AUTO DEFROST LIGHT HI/LO/OFF CUSTOM SET REHEAT POTATO KITCHEN TIMER CLOCK LESS Ez On BEVERAGE POWER LEVEL CUSTOM COOK LIGHT TIMER N.C PIZZA HOLD WARM T/TABLE ON/OFF STOP CLEAR START N.C N.
8-13 PRINTED CIRCUIT BOARD.
May , 2003 P/NO. 3828W5S3242 Printed in Korea.
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