Service Manual
Page 2
... revised pages are introduced. CONTENTS SAFETY PRECAUTIONS...2 EM-Z2000S Microwave Oven Explode Drawing ...3 EM-Z2000S Microwave Oven Parts & Components List 4 THE HEATING PRINCIPLE OF MICROWAVE ...5 THE STRUCTURE AND WORKING PRINCIPLE OF MICROWWAVE OVEN 6 1.1 HIGH VOLTAGE RECTIFYING CIRCUIT 6 1.2 MICROWAVE GENERATER...7 1.3 COOLING SYSTEM...7 1.4 ELECTRIC CONTROL SYSTEM...7 TYPICAL CIRCUIT ANALYASIS OF MICROWAVE OVEN 10 HOW TO ASSEMBLE AND DISASSEMBLE MICROWAVE OVEN COMPONENTS 11 1.5 THE CABINET ...11 THE DOOR...
... revised pages are introduced. CONTENTS SAFETY PRECAUTIONS...2 EM-Z2000S Microwave Oven Explode Drawing ...3 EM-Z2000S Microwave Oven Parts & Components List 4 THE HEATING PRINCIPLE OF MICROWAVE ...5 THE STRUCTURE AND WORKING PRINCIPLE OF MICROWWAVE OVEN 6 1.1 HIGH VOLTAGE RECTIFYING CIRCUIT 6 1.2 MICROWAVE GENERATER...7 1.3 COOLING SYSTEM...7 1.4 ELECTRIC CONTROL SYSTEM...7 TYPICAL CIRCUIT ANALYASIS OF MICROWAVE OVEN 10 HOW TO ASSEMBLE AND DISASSEMBLE MICROWAVE OVEN COMPONENTS 11 1.5 THE CABINET ...11 THE DOOR...
Service Manual
Page 3
...door closing (3). C. SAFETY PRECAUTIONS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY A. Before turning on each oven prior to release to verify compliance with the Federal performance standard should be operated with the door open. Interlock... THE RISK OF SERIOUS OR FATAL INJURY. 2 B. Do not operate or allow the oven to be performed on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper ...
...door closing (3). C. SAFETY PRECAUTIONS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY A. Before turning on each oven prior to release to verify compliance with the Federal performance standard should be operated with the door open. Interlock... THE RISK OF SERIOUS OR FATAL INJURY. 2 B. Do not operate or allow the oven to be performed on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper ...
Service Manual
Page 4
...-1000AS23C08 Magnetron 2M248K-N 1 GA-1000AS23C09 Microswitch V-5230Qor VP533B-OFB 2 GA-1000AS23C10 Microswitch V-5220Qor VP532B-OFB 1 GA-1000AS23C11 Thermostat KSD180 1 GA-1000AS23C12 Thermostat KSD105 1 GA-1000AS23C13 Oven lamp KEI T22/120V 20W 1 3 EM-Z2000S Microwave Oven Explode View EM-Z2000S Microwave Oven Components List COMPONENT No.
...-1000AS23C08 Magnetron 2M248K-N 1 GA-1000AS23C09 Microswitch V-5230Qor VP533B-OFB 2 GA-1000AS23C10 Microswitch V-5220Qor VP532B-OFB 1 GA-1000AS23C11 Thermostat KSD180 1 GA-1000AS23C12 Thermostat KSD105 1 GA-1000AS23C13 Oven lamp KEI T22/120V 20W 1 3 EM-Z2000S Microwave Oven Explode View EM-Z2000S Microwave Oven Components List COMPONENT No.
Service Manual
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EM-Z2000S Microwave Oven Parts List PART PART CODE NO NAME QTY PART PART CODE NO NAME QTY PART PART CODE NO NAME QTY PART PART CODE NO NAME QTY P01 GA-1000AS23P01 Oven cavity 1 P32 GA-1000AS23P32 Air duct 1 P02 GA-1000AS23P02 Door frame 1 P34 GA-1000AS23P34 Wire fastener 2 P03 GA-1000AS23P03 Outer enclosure 1 P36...
EM-Z2000S Microwave Oven Parts List PART PART CODE NO NAME QTY PART PART CODE NO NAME QTY PART PART CODE NO NAME QTY PART PART CODE NO NAME QTY P01 GA-1000AS23P01 Oven cavity 1 P32 GA-1000AS23P32 Air duct 1 P02 GA-1000AS23P02 Door frame 1 P34 GA-1000AS23P34 Wire fastener 2 P03 GA-1000AS23P03 Outer enclosure 1 P36...
Service Manual
Page 6
...organism (plant and animal). Usually, food is Dielectric loss of polar molecule; This phenomenon usually is applied for ultrahigh frequent microwave field from the microwave field to heat energy. When the outer electric field apply for the power the heated matter adsorbed from the interference and ...negative polarity of the field while the negative ion does opposite. The organism is conductive loss of ion. Under the affect of microwave field, the thermal effect mechanism produced from the above said action, there is another action which is understanding that the power ...
...organism (plant and animal). Usually, food is Dielectric loss of polar molecule; This phenomenon usually is applied for ultrahigh frequent microwave field from the microwave field to heat energy. When the outer electric field apply for the power the heated matter adsorbed from the interference and ...negative polarity of the field while the negative ion does opposite. The organism is conductive loss of ion. Under the affect of microwave field, the thermal effect mechanism produced from the above said action, there is another action which is understanding that the power ...
Service Manual
Page 7
...composed of high voltage rectification, cooling system. If something wrong with the positive phase of the widely used model, mechanical control and touch control microwave oven. 1.1 HIGH VOLTAGE RECTIFYING CIRCUIT. The working principle of each part of the winding voltage, and got a doubled, about 4000V direct high ...then be changed to 4000V direct volt-age by the rectifier, and be classified to many kinds according to keep the oven working to transfer the microwave energy to between the cathode and the anode of the circuit: 120V power boosted through wave guide tube. The electricity...
...composed of high voltage rectification, cooling system. If something wrong with the positive phase of the widely used model, mechanical control and touch control microwave oven. 1.1 HIGH VOLTAGE RECTIFYING CIRCUIT. The working principle of each part of the winding voltage, and got a doubled, about 4000V direct high ...then be changed to 4000V direct volt-age by the rectifier, and be classified to many kinds according to keep the oven working to transfer the microwave energy to between the cathode and the anode of the circuit: 120V power boosted through wave guide tube. The electricity...
Service Manual
Page 8
... wave magnetron. When fix the fan, attention must be less than air absorb. The electric control system of those mechanical control microwave oven, electric control system mainly composes of the magnetron circulates, the filament current should flow to avoid blasting. 1.4 ELECTRIC CONTROL SYSTEM....part of the magnetron, compelling wind cooling and flowing water-cooling can turn the direct energy which the present used microwave oven's generator. A microwave generator is very small as the FIG.2-3 shown. The filament of the magnetron which is necessary to anode loss ...
... wave magnetron. When fix the fan, attention must be less than air absorb. The electric control system of those mechanical control microwave oven, electric control system mainly composes of the magnetron circulates, the filament current should flow to avoid blasting. 1.4 ELECTRIC CONTROL SYSTEM....part of the magnetron, compelling wind cooling and flowing water-cooling can turn the direct energy which the present used microwave oven's generator. A microwave generator is very small as the FIG.2-3 shown. The filament of the magnetron which is necessary to anode loss ...
Service Manual
Page 9
...release button screw 1.4.2 TIME AND POWER DISTRIBUTOR Time and power distributor is mainly composed of timer motor and two Fig.2-5(b) sets of a microwave oven. It mainly by the method which is through Fig.2-6 changing the working point (such as anode voltage or magnetic field) to open . S4 ... reliability, it would stop the working . fuse main latch switch S1 There fixed hooks on it is widely used for controlling the output of the microwave oven, actually for 8 To that time, S1, S2 are cut off, and door hook the monitor switch S3 is closed , S3 is cut off...
...release button screw 1.4.2 TIME AND POWER DISTRIBUTOR Time and power distributor is mainly composed of timer motor and two Fig.2-5(b) sets of a microwave oven. It mainly by the method which is through Fig.2-6 changing the working point (such as anode voltage or magnetic field) to open . S4 ... reliability, it would stop the working . fuse main latch switch S1 There fixed hooks on it is widely used for controlling the output of the microwave oven, actually for 8 To that time, S1, S2 are cut off, and door hook the monitor switch S3 is closed , S3 is cut off...
Service Manual
Page 10
... controller as mica sheet). When power select switch is set at "HIGH", S5 is always conducted, the output of the microwave oven is 700W(full power) when the power select switch is set at working 30 seconds as molding or thermal breakdown, which made... sensor switch, usually, it should also comply with the magnetron, the energy should be less reflect, and distribute evenly in the cavity repeatedly, those microwave oven which haven't been absorbed will be successively adjusted from being damaged. 1.4.4 HEATING CHAMBER Heating chamber is usually made the temperature of the cavity (FIG...
... controller as mica sheet). When power select switch is set at "HIGH", S5 is always conducted, the output of the microwave oven is 700W(full power) when the power select switch is set at working 30 seconds as molding or thermal breakdown, which made... sensor switch, usually, it should also comply with the magnetron, the energy should be less reflect, and distribute evenly in the cavity repeatedly, those microwave oven which haven't been absorbed will be successively adjusted from being damaged. 1.4.4 HEATING CHAMBER Heating chamber is usually made the temperature of the cavity (FIG...
Service Manual
Page 11
...theory of electricity, so it is to assemble a current - current-resistant constructure front door plate Fig.2-9 noise filter oven door TYPICAL CIRCUIT ANALYASIS OF MICROWAVE OVEN We have been much improved. Anyway, mechanic damage would enlarge at the seam from a mechanical point. FIG.2-9 is...TRANSFORMER DIGITAL PROGRAMMER CIRCUIT 10 resistant construct between the door and the doorframe. We shall analyze the complete set circuit of the microwave oven link with the practical circuit at present is possible to observe the heating as well as follows: 1) Assemble a layer of...
...theory of electricity, so it is to assemble a current - current-resistant constructure front door plate Fig.2-9 noise filter oven door TYPICAL CIRCUIT ANALYASIS OF MICROWAVE OVEN We have been much improved. Anyway, mechanic damage would enlarge at the seam from a mechanical point. FIG.2-9 is...TRANSFORMER DIGITAL PROGRAMMER CIRCUIT 10 resistant construct between the door and the doorframe. We shall analyze the complete set circuit of the microwave oven link with the practical circuit at present is possible to observe the heating as well as follows: 1) Assemble a layer of...
Service Manual
Page 12
... the power plug. 2. Loosen the four screws at FIG.4-1 (b), and the cabinet can be cut off , the power of a typical microwave oven can be taken off the power supply to prevent the magnetron from being damaged by overheating. When cooking, touch the starting button and closed... the temperature lowered, it full ahead. 2. Push the cabinet back 25mm according to the heating chamber for mechanical controlled microwave ovens: HOW TO ASSEMBLE AND DISASSEMBLE MICROWAVE OVEN COMPONENTS In the following pages, we will introduce the ways in which the various parts of the lamp, all the ...
... the power plug. 2. Loosen the four screws at FIG.4-1 (b), and the cabinet can be cut off , the power of a typical microwave oven can be taken off the power supply to prevent the magnetron from being damaged by overheating. When cooking, touch the starting button and closed... the temperature lowered, it full ahead. 2. Push the cabinet back 25mm according to the heating chamber for mechanical controlled microwave ovens: HOW TO ASSEMBLE AND DISASSEMBLE MICROWAVE OVEN COMPONENTS In the following pages, we will introduce the ways in which the various parts of the lamp, all the ...
Service Manual
Page 14
...5. It should have no copper filament weaved washer, for it with a screwdriver. Aim the head of the magnetron antenna to the oven, and tighten the two screws of microwave leakage. FIG.4 - 1. 4. Slip the washer in the hinge shaft, then put the hinge shaft in the hinge hole on ... placed well. Take off the cabinet. 3. To assemble, (1) Place the two buckles under the control panel into the two rectangle holes under the oven as 1,2,3, steps at "★" mark should be fixed if there is pasted smoothly, and should not be polished with "+" - magnetron screwe screwe ...
...5. It should have no copper filament weaved washer, for it with a screwdriver. Aim the head of the magnetron antenna to the oven, and tighten the two screws of microwave leakage. FIG.4 - 1. 4. Slip the washer in the hinge shaft, then put the hinge shaft in the hinge hole on ... placed well. Take off the cabinet. 3. To assemble, (1) Place the two buckles under the control panel into the two rectangle holes under the oven as 1,2,3, steps at "★" mark should be fixed if there is pasted smoothly, and should not be polished with "+" - magnetron screwe screwe ...
Service Manual
Page 15
... the FIG.4 - 9, tear off the earthing screw which fix the board on the oven. 3. screwdriver. 5. Fix the transformer on the figure. Plug in the two terminals of the lampshade (FIG.4 - 8). 3. Turn the microwave over. 3. To disassemble, 1. screwdriver, and take off the protective paper of the ...rubber spacer, set it on the transformer as shown on the oven as the 1, 2, 3, steps of Ⅲ of this part. Pull ...
... the FIG.4 - 9, tear off the earthing screw which fix the board on the oven. 3. screwdriver. 5. Fix the transformer on the figure. Plug in the two terminals of the lampshade (FIG.4 - 8). 3. Turn the microwave over. 3. To disassemble, 1. screwdriver, and take off the protective paper of the ...rubber spacer, set it on the transformer as shown on the oven as the 1, 2, 3, steps of Ⅲ of this part. Pull ...
Service Manual
Page 17
... Put the motor shaft into the switch holder. (2) Assemble the interlock switch and pilot switch to FIG.4 - 16). 1.13 THE TURNTABLE COMBINATIOM. Turn the oven back. 5. turntable shaft supporter roller ring Fig.4-18 Fig.4-19 1.14 THE DOOR SAFTY INTERLOCKS. Fix the diode with 1, 2, 3, steps of Ⅲ of... working lever from the holder. Close the door, push and pull the low and up part of the hook and the switch holder. Turn the microwave oven over (FIG. 4- 17). 2. Take off the middle cover (FIG.4 - 18). 3. 1. Insert one end of the diode to one screw (pay attention to...
... Put the motor shaft into the switch holder. (2) Assemble the interlock switch and pilot switch to FIG.4 - 16). 1.13 THE TURNTABLE COMBINATIOM. Turn the oven back. 5. turntable shaft supporter roller ring Fig.4-18 Fig.4-19 1.14 THE DOOR SAFTY INTERLOCKS. Fix the diode with 1, 2, 3, steps of Ⅲ of... working lever from the holder. Close the door, push and pull the low and up part of the hook and the switch holder. Turn the microwave oven over (FIG. 4- 17). 2. Take off the middle cover (FIG.4 - 18). 3. 1. Insert one end of the diode to one screw (pay attention to...
Service Manual
Page 18
...in the PC frame and PC board as FIG.4 - 24 shown, that its normal position. (6) Fix the control panel on the oven (FIG.4-6). (7) Plug in position, if not, readjustment is flexible. to the arrow direction at lower part of the light tough switch ... closely to its notch is tallied with the flange of the row seat, then, press it down to the oven, and pull the holder inside closely after loosen the screw which fix the holder, then, tighten the screw and... screw latch switch hold front door pla Fig.4-21 1.15 THE CONTROL PANEL OF A TYPICAL MICROWAVE OVEN Pull out the power plug.
...in the PC frame and PC board as FIG.4 - 24 shown, that its normal position. (6) Fix the control panel on the oven (FIG.4-6). (7) Plug in position, if not, readjustment is flexible. to the arrow direction at lower part of the light tough switch ... closely to its notch is tallied with the flange of the row seat, then, press it down to the oven, and pull the holder inside closely after loosen the screw which fix the holder, then, tighten the screw and... screw latch switch hold front door pla Fig.4-21 1.15 THE CONTROL PANEL OF A TYPICAL MICROWAVE OVEN Pull out the power plug.
Service Manual
Page 19
... "wen wen " noise. (2) Long time "shishi" noise. (3) Strike sound like "Pipa pipa" 1.17 SPOT EXAMINING STEPS OF THE MICROWAVE OVEN 1.17.1 EXAMINE THE MICROWAVE INSULATING RESISTANCE Measure the insulating resistance with R×1 grade of the measure. The overhauling must check whether the interlock device is short - Such... can repair it is at four sides of the fan. glass tray 1.17.2 EXAMINATION OF THE RESISTANCE VALUE OF THE MICROWAVE OVEN. The microwave oven may occur compound breakdown due to all kinds of different reasons, thus, when overhaul, they may do harmful to the sound ...
... "wen wen " noise. (2) Long time "shishi" noise. (3) Strike sound like "Pipa pipa" 1.17 SPOT EXAMINING STEPS OF THE MICROWAVE OVEN 1.17.1 EXAMINE THE MICROWAVE INSULATING RESISTANCE Measure the insulating resistance with R×1 grade of the measure. The overhauling must check whether the interlock device is short - Such... can repair it is at four sides of the fan. glass tray 1.17.2 EXAMINATION OF THE RESISTANCE VALUE OF THE MICROWAVE OVEN. The microwave oven may occur compound breakdown due to all kinds of different reasons, thus, when overhaul, they may do harmful to the sound ...
Service Manual
Page 20
...;" . If the reading is "∞", it indicates the micro switch has broken, and the timer should be examined as abnormal. 1.17.4 EXAMINE WHEN THE OVEN AT OPERATING, BUT THE FOOD CAN'T BE HEATED. (1) Examine when the lamp is on, the glass tray is cycling, the fan operating in normal: Take... If it with the R×1 grade of a avometer (FIG.5 - 6). If the reading is loosened, pinch it is open - When measuring the ultimate value of microwave leakage of all the above examination shows normal ,then check whether the terminal plug of the magnetron and the capacitor have loosened, if it is...
...;" . If the reading is "∞", it indicates the micro switch has broken, and the timer should be examined as abnormal. 1.17.4 EXAMINE WHEN THE OVEN AT OPERATING, BUT THE FOOD CAN'T BE HEATED. (1) Examine when the lamp is on, the glass tray is cycling, the fan operating in normal: Take... If it with the R×1 grade of a avometer (FIG.5 - 6). If the reading is loosened, pinch it is open - When measuring the ultimate value of microwave leakage of all the above examination shows normal ,then check whether the terminal plug of the magnetron and the capacitor have loosened, if it is...
Service Manual
Page 21
... is short circuited or have a number reading, it with an avometer (FIG.5 - 10 and FIG.5 - 9). 1.17.5 EXAMINE THE STARTING AND THE 8A FUSE OF THE MICROWAVE OVEN. The resistance value of the capacitor, then the insulation between the capacitor pole and the cabinet should be replaced by a new one . When they just...
... is short circuited or have a number reading, it with an avometer (FIG.5 - 10 and FIG.5 - 9). 1.17.5 EXAMINE THE STARTING AND THE 8A FUSE OF THE MICROWAVE OVEN. The resistance value of the capacitor, then the insulation between the capacitor pole and the cabinet should be replaced by a new one . When they just...
Service Manual
Page 22
...twist tightly. below plastic parts, then tighten the Screw again. If the leakage still exceeds standard requirement, then inspect whether the right oven is larger, the oven should be the main causes of microwave leakage: (1) The door deformed, the hinge loosed or damaged that caused the door can you start the.... If the leakage is even or not, if not, smooth it is the larger side at the right - Place a graduate of the microwave leakage around the oven with the switch holder tightly, then tighten the screw again, and open and close the door, time set at 3 minutes, power at the...
...twist tightly. below plastic parts, then tighten the Screw again. If the leakage still exceeds standard requirement, then inspect whether the right oven is larger, the oven should be the main causes of microwave leakage: (1) The door deformed, the hinge loosed or damaged that caused the door can you start the.... If the leakage is even or not, if not, smooth it is the larger side at the right - Place a graduate of the microwave leakage around the oven with the switch holder tightly, then tighten the screw again, and open and close the door, time set at 3 minutes, power at the...