Menumaster DECS11MA Service Manual Download Page 1 | Manualshive

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Menumaster DECS11MA Service Manual Download Page 1

Microwave Oven
Service Manual

DECS11MA
DES11EA
DFS11G
DFS11EA
UCS11MA
US11EA
UFS11EA

CAUTION
BEFORE SERVICING THE UNIT, READ THE
SAFETY PRECAUTIONS IN THIS MANUAL.

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Summary of Contents for DECS11MA

Page 1: ...Microwave Oven Service Manual DECS11MA DES11EA DFS11G DFS11EA UCS11MA US11EA UFS11EA CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL...

Page 2: ...ration 2 proper door closing 3 seal and sealing surfaces arcing wear and other damage 4 damage to or loosening of hinges and latches 5 evidence of dropping or abuse C Before turning on microwave power...

Page 3: ...GRAMMING 4 7 SCHEMATIC DIAGRAM 4 9 CIRCUIT DESCRIPTION 4 10 SERVICE INFORMATION 5 1 TOOLS AND MEASURING INSTRUMENTS 5 1 MICROWAVE LEAKAGE TEST 5 1 MEASUREMENT OF MICROWAVE POWER OUTPUT 5 3 DISASSEMBLY...

Page 4: ...30 Volts AC 50 Hz 1 600 Watts Single phase 3 wire grounded 1 100 Watts full microwave power IEC60705 2 450 MHz 2M282 0 60 min 213 4 W x 141 4 H x 177 8 D 141 4 W x 87 8 H x 163 8 D 51 kg 58 kg Touch C...

Page 5: ...operation of the microwave oven requires that the magnetron be assembled to the waveguide and cavity Never operate the magnetron unless it is properly installed Be sure that the magnetron gasket is pr...

Page 6: ...o prevent interference 8 Do not touch the front glass during or after cooking of the Grill and Combination mode This glass is very hot during heater operating 9 Do not operate the oven at microwave an...

Page 7: ...ter times for Manual Time Entry cooking HOLD 0 Use to select power level Oven can heat at full or reduced power If oven power level is set to 0 oven does not heat for programmed time If no power level...

Page 8: ...cooking Use to select power level Oven can heat at full or reduced power If oven power level is set to 0 oven does not heat for programmed time If no power level is selected oven operates at 100 powe...

Page 9: ...will not glow Pads Use to enter cooking time Use to begin heating with preprogrammed times and power levels Use to select power level Oven can heat at full or reduced power Use to start Manual Time En...

Page 10: ...Time Entry cooking cooking Use to select power level Oven can heat at full or reduced power If oven power level is set to 0 oven does not heat for programmed time If no power level is selected oven op...

Page 11: ...tages displays COOK shows when oven is operating 20 indicates the microwave power level used If power level does not show oven is heating at 100 power Cooking Displays Cooking Displays Cooking Display...

Page 12: ...pad Example press 18 sec QTY 2X QTY 2X 1 2 3 4 5 6 7 8 9 0 10 sec 20 sec 30 sec 45 sec 1 min 1 30 min 2 min 3 min 4 min 5 min 01 02 03 04 05 06 07 08 09 10 Pads Pads Pads Heating Times Heating Times H...

Page 13: ...n oven memory Repeat step 3 6 to program additional pads 7 Press RESET pad or close oven door to exit programming mode Multiple Heating Stages Follow instructions below to program oven to perform 3 co...

Page 14: ...minates beep Sets volume to low Sets volume to medium Sets volume to high 3 Key Beep OP 30 OP 31 Prevents beep when pad is pressed Allows beep when pad is pressed 4 Keyboard Enable Window OP 40 OP 41...

Page 15: ...SCHEMATIC DIAGRAM 4 9...

Page 16: ...volts AC is generated in the secondary of the high voltage transformer which is increased by the action of the high voltage diode and charging of the high voltage capacitor The negative 4 000 Volts DC...

Page 17: ...nt openings for microwave leakage Check for microwave leakage after every servicing The power density of the microwave radiation leakage emitted by the microwave oven should not exceed 4 mW cm2 Always...

Page 18: ...test probe must be removed no faster than 1 inch sec 2 5 cm sec along the shaded area otherwise a false reading may result The test probe must be held with the grip portion of the handle A false read...

Page 19: ...er output P in watts is calculated from the following formula 5 3 CERAMIC PLATE WATER LOAD MEASUREMENT OF MICROWAVE POWER OUTPUT P DISASSEMBLY AND ADJUSTMENT is measured while the microwave generator...

Page 20: ...er replacing the door be sure to check that the primary switch monitor switch and secondary switch operate normally 2 After replacing the door check for microwave energy leakage with a survey meter Mi...

Page 21: ...or microwave leakage with a survey meter around the Microwave energy must be below the limit of 5 mW cm2 With a 275 ml water load Make sure that gasket is rigidly attached to the magnetron To prevent...

Page 22: ...owave activity when the door is opened during cooking and thus to prevent the danger resulting from the microwave leakage 2 MOUNTING OF THE PRIMARY MONITOR SECONDARY SWITCHES TO THE LATCH BOARD 3 INST...

Page 23: ...door is closed meter should indicate a closed circuit When the secondary switch operation is abnormal make the necessary adjustment or replace the switch using only the same type of switch C MONITOR S...

Page 24: ...ESULTS HIGH VOLTAGE TRANSFORMER Wire leads removed MAGNETRON Wire leads removed 1 Measure the resistance Ohm meter scale Rx1 and Rx100 Primary winding Secondary winding Filament winding 2 Measure the...

Page 25: ...scale Rx10000 Normal Momentarily indicates several ohms and then gradually returns to infinite Normal Infinite Normal Infinite Abnormal Continuity Normal Continuity Abnormal Infinite NOTE When testin...

Page 26: ...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 Relay 2 FAN MOTOR Wir...

Page 27: ...f cookware with metallic trimming CAUSE REMEDY This may be cause incomplete connect to H V transformer TROUBLE SHOOTING WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER EVALUATE THE COMPLAINT CAREFULLY IF...

Page 28: ...ROUBLE 1 The following visual conditions indicate a probable defective control circuit 1 Incomplete segments Segment missing Partial segment missing Digit flickering NOTE Slight flickering is normal 2...

Page 29: ...on defective fuse only Fuse blows again Defective high volt age transformer Replace high volt age transformer Disconnect one side of the wire lead connected from transformer to the high voltage capaci...

Page 30: ...n Replace magnetron Decrease in power source voltage with load Suggest customer contact local electric power utility co or qualified electrician Check the power source voltage CONDITION CHECK RESULT C...

Page 31: ...tor Replace high voltage capacitor Normal Check high vol tage capacitor Abnormal Defective high voltage diode Replace high voltage diode Normal Check high vol tage diode Abnormal Defective magnetron R...

Page 32: ...DOOR PARTS CONTROL PANEL PARTS LATCH BOARD PARTS BASE PLATE PARTS OVEN CAVITY PARTS INTERIOR PARTS 6 1 EXPLODED VIEW INTRODUCTION MODEL DFS11G DECS11MA UCS11MA EV...

Page 33: ...MODEL DES11EA DFS11EA US11EA UFS11EA DOOR PARTS CONTROL PANEL PARTS LATCH BOARD PARTS BASE PLATE PARTS INTERIOR PARTS OVEN CAVITY PARTS INTRODUCTION EV 6 2...

Page 34: ...EV 6 3 1386 1384 W136 1006 1007 W108 W105 1009 W207 W206 1385 1004 1005 1013 1000 1002 DOOR PARTS MODEL DFS11G DECS11MA UCS11MA DES11EA DFS11EA US11EA UFS11EA...

Page 35: ...6 4 2012 2400 2005 2006 2381 2000 W130 W102 CONTROL PANEL PARTS MODEL DFS11G EV...

Page 36: ...6 5 2012 2400 2005 2006 2381 W130 2000 2002 W102 CONTROL PANEL PARTS MODEL DECS11MA UCS11MA EV...

Page 37: ...2004 2381 2000 2002 2006 W130 W102 CONTROL PANEL PARTS MODEL DES11EA US11EA 6 6 EV...

Page 38: ...6 7 2004 2006 2381 W130 W102 2000 CONTROL PANEL PARTS MODEL DFS11EA UFS11EA EV...

Page 39: ...6 8 7037 9000 3001 5045 W121 W109 W158 W121 W109 3009 W105 W109 3004 5024 W109 W108 OVEN CAVITY PARTS MODEL DFS11G DECS11MA UCS11MA DES11EA DFS11EA US11EA UFS11EA EV...

Page 40: ...6 9 4003 4000 4009 W102 W117 4002 4004 4008 4001 LATCH BOARD PARTS MODEL DFS11G DECS11MA UCS11MA DES11EA DFS11EA US11EA UFS11EA EV...

Page 41: ...09A 5000 Discord original for parts supplied Change pieces simultaneously After Before W101 6021W3B001L 6851W1A001G 5013 3007 W108 W109 5104 W109 5001 5051 5302 W109 5019 9000 5203 3381 3028 W101 5008...

Page 42: ...6 11 6001 6000 W121 W108 6013 W121 3026 3901 3902 W162 BASE PLATE PARTS MODEL DFS11G DECS11MA UCS11MA DES11EA DFS11EA US11EA UFS11EA EV...

Page 43: ...7 1 SCHEMATIC DIAGRAM OF P C B...

Page 44: ...7 2 PRINTED CIRCUIT BOARD...

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