Benutzeranleitung / Produktwartung 721.805934 des Produzenten Kenmore
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삼 흥 정 판 DIVISION 22 BASIC FIELD MANUAL FOR MICROW A VE OVEN MODEL 721.62642400 / 721.80592401 / 721.80592402 721.62649400 / 721.80599401 / 721.80599402 721.62644400 / 721.80594401 / 721.80594402 721.62643400 / 721.80593401 / 721.80593402 March, 2005 MODEL 721.
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.
T ABLE OF CONTENTS (Page) SAFETY PRECAUTIONS ---------------------------------------------------------------------------------------------------- Inside front page SPECIFICATIONS ---------------------.
1-1 Rated Power Consumption ---------------------------------- 1500W maximum (M icrowave oven+Cook top lamps+Ventilation fan) Microwave Output ------------------------------------------------ 1000W (I.
• 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.
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 1 2 6 9 11 15 19 23 26 27 24 12 5 8 10 14 16 17 18 21 20 22 25 29 28 13 7 4 3.
1. Display. The display includes a clock and indicators to tell you time of day, cooking time settings, cook powers, quantities, weights and cooking functions selected. 2. Dinner Plate. Touch this pad to cook without entering a cook time or power. 3. Frozen Entree.
5-1 OVERALL CIRCUIT DIAGRAM SCHEMA TIC DIAGRAM (I) *Check the Model No..
5-2 SCHEMA TIC DIAGRAM (II) *Check the Model No. (ADD Noise filter) RY 1 O.L R Y14 C.L HIGH R Y15 C.L NIGHT RY 11 V. M RY 6 T. M.
5-3 MA TRIX CIRCUIT FOR TOUCH KEY BOARD.
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.
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. Extreme caution must be exercised. Never plug the unit into a power source to determine which component is defective in high voltage section.
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 assembler .
MEASUREMENT WITH THE OUTER CASE REMOVED (1) When you replace the magnetron, measure for microwave energy leakage before the outer case is installed and after all necessary components are replaced or adjusted. Special care should be taken in measuring the following parts.
IMPORT ANT NOTES: UNIT MUST BE DISCONNECTED FROM ELEC- TRICAL 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 with thumb 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.
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.
D. REMOVING MAGNETRON (Figures 11 Through 13) (1) Remove the vent grille. (2) Remove mount, all. (3) Remove outcase. (4) Disconnect the wireleads. (5) Remove the three screws and Magnetron very carefully. NOTES: • When removing the magnetron, make sure that its dome does not hit any adjacent parts, or it may be damaged.
E. REMOVING DOOR (Figure 14) (1) Remove the vent grille by two screws securing it to the outcase loosening. (2) Lift up and draw the door. NOTES: • After replacing the door, be sure to check that the primary interlock switch, the secondary interlock switch and the interlock monitor switch operate normally.
G. 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.
I. 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 eight screws securing it to the oven cavity. (Figure 20) (4) Disconnect the leadwire from the turntable motor terminals.
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.
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 switch.
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 TEST AND CHECKOUT PRECEDURES AND TROUBLESHOOTING A. TEST PROCEDURES - 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 (2) Terminal to case Measure the continuity: (1) Forward (1) Reverse Normal reading: Momentarily indicates several ohms, and then gradually returns to infinite ohms.
7-17 COMPONENTS TEST PROCEDURES RESULTS TOUCH KEY BOARD Measure the resistance between terminal pins of connector KEY CONNECTOR. NOTE: When reconnecting the FPC connector, make sure that the holes on the FPC connector are properly engaged with hooks on the plastic fastener.
NOTES: • A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR ANY REASON. • MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION. • WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR, NOT THE WIRES.
7-19 (2) CHECKOUT PROCEDURES FOR RELAY. - PROBLEM (A) - 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.
(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 C. TROUBLE SHOOTING Before following this troubleshooting read “ TRIAL OPERATION ” on page 6- 1. • “ DISPLAY ” Problems, “ A ” thru “ C ” • “ HELP UP ” Problems, “ D ”.
7-22 PROBLEM - C: Unit does not heat up even if display counts down when START key is touched for “ HIGH POWER ” cooking. Check: 1. PRIMARY AND SECONDARY INTERLOCK SWITCHES 2.
7-23 PROBLEM - D: No buzzing when touching the key, between stages or at end of cooking 1.
7-24 PROBLEM - E: Ventilation fan does not operate when “ FAN HIGH/ LOW ” key is touched. 1 Check: 1. POWER SUPPLY 2. FUSE.
8-1 EXPLODED VIEW DOOR P ARTS 1005 1000 1002 1004 1006 1007 101 1 1009 1381 For 721. 62643 721. 80593 1003 1008 W109 #EV# Model: 721.62642400 / 721.80592401 / 721.80592402 721.62649400 / 721.80599401 / 721.80599402 721.62644400 / 721.80594401 / 721.80594402 721.
8-2 CONTROLLER P ARTS 2004 2002 2000 2008 2381 2006 W106 *07 2004 2008 2006 W106 *07 2381 #EV# FOR MODEL: 721.62642 721.62649 721.62644 721.80592 721.80599 721.
W138 W138 W138 W142 W142 W142 3001 3029 3024 3003 3036 3018 3034 3026 3028 5036 3026 3025 301 1 6000 5038 3014 6001 W1 18 W1 18 *05 *01 *04 W109 3010 FOR MODEL 721. 62642 721. 62644 721. 80592 721. 80594 FOR MODEL 721. 62649 721. 62643 721. 80599 721.
8-4 4000 W102 4001 4002 4003 4002 4004 LA TCH BOARD P ARTS #EV#.
8-5 INTERIOR P ARTS (I) 3002 3012 3008 W101 5009 W108 5008 5035 W101 5034 5000 5002 5018 W101 W105 3009 W108 3037 #EV#.
3027 5015 5045 5037 5038 5006 5010 5001 5016 5005 5014 W109 W108 5337 5004 501 1 5058 5044 5043 3004 W136 W101 * Check the Model No. * Check the Model No. * Check the Model No. * Check the Model No. 8-6 INTERIOR P ARTS (II - I) #EV# Model: 721.80592401 721.
3027 5015 5045 5037 5038 5006 5010 5016 5014 W109 W108 5337 5004 501 1 5058 5044 5043 3004 W136 W101 * Check the Model No. * Check the Model No. * Check the Model No. 5041 * Check the Model No. 5001 8-7 INTERIOR P ARTS (II - II) #EV# Model: 721.80592402 721.
8-8 INST ALLA TION P ARTS 6008 W109 601 1 6010 6009 VINYL BAG #EV#.
Printed in Korea P/NO : 3828W5S5158.
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