Service Manual
Page 2
... AND THE DOOR RELEASE MECHANISM 10 1.8 THE MAGNETRON ...10 1.9 THE TRANSFORMER ...11 1.10 THE FAN MOTOR ...11 1.11 THE CAPACITOR ...12 1.12 THE DIOD...12 1.13 THE TURNTABLE COMBINATION 13 1.14 THE DOOR SAFETY INTERLOCKS 13 1.15 THE CONTROL PANEL OF A TYPICAL MICROWAVE OVEN 14 BREAKDOWN ANALYSIS AND ... OF OVERHAULING 15 1.16 EXAMINING THE BREAKDOWN CAUSES 15 1.17 SPOT EXAMINING STEPS OF THE MICROWAVE OVEN 15 1.18 REPAIRING METHOD OF SEVERAL BREAKDOWN 18 1.19 THE REQUIREMENTS OF MICROWAVE AFTER IT HAS BEEN REPAIRED 19 CRITICAL PARTS SERVICING ...20 1.20 IMPORTANT THINGS TO DO ...
... AND THE DOOR RELEASE MECHANISM 10 1.8 THE MAGNETRON ...10 1.9 THE TRANSFORMER ...11 1.10 THE FAN MOTOR ...11 1.11 THE CAPACITOR ...12 1.12 THE DIOD...12 1.13 THE TURNTABLE COMBINATION 13 1.14 THE DOOR SAFETY INTERLOCKS 13 1.15 THE CONTROL PANEL OF A TYPICAL MICROWAVE OVEN 14 BREAKDOWN ANALYSIS AND ... OF OVERHAULING 15 1.16 EXAMINING THE BREAKDOWN CAUSES 15 1.17 SPOT EXAMINING STEPS OF THE MICROWAVE OVEN 15 1.18 REPAIRING METHOD OF SEVERAL BREAKDOWN 18 1.19 THE REQUIREMENTS OF MICROWAVE AFTER IT HAS BEEN REPAIRED 19 CRITICAL PARTS SERVICING ...20 1.20 IMPORTANT THINGS TO DO ...
Service Manual
Page 8
...it should be reflect to the working condition. control panel To improve the heating evenness there often fixed a turntable glass tray at "HIGH", S5 is always conducted, the output of the microwave oven is 700W(full power) when the power select switch is usually made the temperature of the magnetron ...loss, it is the place where the microwave and the food affect mutually. There are lots kinds of chamber. Moreover, too big of the cavity would work to carton type, cavity type, radiation type, slow type (surface wave type), etc. The turntable tray is set at the bottom of ...
...it should be reflect to the working condition. control panel To improve the heating evenness there often fixed a turntable glass tray at "HIGH", S5 is always conducted, the output of the microwave oven is 700W(full power) when the power select switch is usually made the temperature of the magnetron ...loss, it is the place where the microwave and the food affect mutually. There are lots kinds of chamber. Moreover, too big of the cavity would work to carton type, cavity type, radiation type, slow type (surface wave type), etc. The turntable tray is set at the bottom of ...
Service Manual
Page 9
...FUSE MONITOR SWITCH THERMAL CUTOUT (MAG.) (OVEN) N SECONDARY SWITCH PRIMARY SWITCH POWER RELAY C OVEN LAMP L FAN MOTOR TURNTABLE MOTOR FM MT MAIN RELAY HIGH VOLTAGE TRANSFORMER MAGNETRON FA F HIGH VOLTAGE CAPACITOR HIGH VOLTAGE DIODE LOW VOLTAGE TRANSFORMER DIGITAL ...THETRANSFERING LINE ONE-FOURTHWAVE LENGTH IMPEDANCE CHANGER". Although there is called "CURRENT-RESISTANT". 8). Therefore, the main methods designed for preventing microwave leakage of electricity, so it possible to assemble a current - FIG.2-9 is sealed at the hinge and the hook. Recently...
...FUSE MONITOR SWITCH THERMAL CUTOUT (MAG.) (OVEN) N SECONDARY SWITCH PRIMARY SWITCH POWER RELAY C OVEN LAMP L FAN MOTOR TURNTABLE MOTOR FM MT MAIN RELAY HIGH VOLTAGE TRANSFORMER MAGNETRON FA F HIGH VOLTAGE CAPACITOR HIGH VOLTAGE DIODE LOW VOLTAGE TRANSFORMER DIGITAL ...THETRANSFERING LINE ONE-FOURTHWAVE LENGTH IMPEDANCE CHANGER". Although there is called "CURRENT-RESISTANT". 8). Therefore, the main methods designed for preventing microwave leakage of electricity, so it possible to assemble a current - FIG.2-9 is sealed at the hinge and the hook. Recently...
Service Manual
Page 10
... screws should be disassembled and assembled. 1.5 THE CABINET To disassemble the cabinet 1. The turntable motor set off to the heating chamber for mechanical controlled microwave ovens: HOW TO ASSEMBLE AND DISASSEMBLE MICROWAVE OVEN COMPONENTS In the following pages, we will also be cut off immediately to cut ...time, power relay are cut off , the power of the magnetron and the filament, changing the power frequency electric energy to microwave energy, the microwave energy then transferred to drive the food around and making the food heated evenly. Put the cabinet on , the fan motor ...
... screws should be disassembled and assembled. 1.5 THE CABINET To disassemble the cabinet 1. The turntable motor set off to the heating chamber for mechanical controlled microwave ovens: HOW TO ASSEMBLE AND DISASSEMBLE MICROWAVE OVEN COMPONENTS In the following pages, we will also be cut off immediately to cut ...time, power relay are cut off , the power of the magnetron and the filament, changing the power frequency electric energy to microwave energy, the microwave energy then transferred to drive the food around and making the food heated evenly. Put the cabinet on , the fan motor ...
Service Manual
Page 15
... the interlock switch and pilot switch to FIG.4 - 16). 1.13 THE TURNTABLE COMBINATION Firstly, do as FIG .4 - 20. As the FIG.4 - 19 shown, fix in the turntable shaft supporter, the place in the two wires. 3. Turn the microwave oven over (FIG. 4- 17). 2. screwdriver, take the switch holder off...working lever into its connecting hole, and fix the motor with two screws (FIG.4 - 18). 4. Assemble and fix the middle base board with two screws (FIG.4 - 17). 2. turntable shaft supporter roller ring Fig.4-18 Fig.4-19 1.14 THE DOOR SAFETY INTERLOCKS Firstly, do as the 1, 2, and 3 ...
... the interlock switch and pilot switch to FIG.4 - 16). 1.13 THE TURNTABLE COMBINATION Firstly, do as FIG .4 - 20. As the FIG.4 - 19 shown, fix in the turntable shaft supporter, the place in the two wires. 3. Turn the microwave oven over (FIG. 4- 17). 2. screwdriver, take the switch holder off...working lever into its connecting hole, and fix the motor with two screws (FIG.4 - 18). 4. Assemble and fix the middle base board with two screws (FIG.4 - 17). 2. turntable shaft supporter roller ring Fig.4-18 Fig.4-19 1.14 THE DOOR SAFETY INTERLOCKS Firstly, do as the 1, 2, and 3 ...
Service Manual
Page 21
...turned off the oven, pull out the power plug, take down the turntable combination, measure the resistance value of the turntable motor R×1K grade of a multimeter, if it is open - circuited, it would enlarge the microwave leakage. The phenomenon indicates the thermal cutout is playing its protective role,... Rectify the microwave leakage measure first, measure around till it can heat, but the lamp is the case, it comply with the R×100 grade of the fan motor has run off . have a 30 minutes trial operation. Repair when the oven can heat, but the turntable glass can be...
...turned off the oven, pull out the power plug, take down the turntable combination, measure the resistance value of the turntable motor R×1K grade of a multimeter, if it is open - circuited, it would enlarge the microwave leakage. The phenomenon indicates the thermal cutout is playing its protective role,... Rectify the microwave leakage measure first, measure around till it can heat, but the lamp is the case, it comply with the R×100 grade of the fan motor has run off . have a 30 minutes trial operation. Repair when the oven can heat, but the turntable glass can be...
Service Manual
Page 22
... door is defective. Record it is normal. 1.19.4 MICROWAVE DEFROST Place a graduate of about 250ml water on the turntable glass tray of the oven, power set middle, time set 4 minutes (To those 700W microwave oven) to the switch terminals. 4. The monitor interlock should.... Refer to follow all of the monitored safety interlock switched and the monitor switch. 6. 1.19.3 MICROWAVE HEATING Place a graduate of about 200ml water on the turntable tray. k. Contact the manufacturer or distributor if you suspect defective primary, secondary or monitor interlock switches,...
... door is defective. Record it is normal. 1.19.4 MICROWAVE DEFROST Place a graduate of about 250ml water on the turntable glass tray of the oven, power set middle, time set 4 minutes (To those 700W microwave oven) to the switch terminals. 4. The monitor interlock should.... Refer to follow all of the monitored safety interlock switched and the monitor switch. 6. 1.19.3 MICROWAVE HEATING Place a graduate of about 200ml water on the turntable tray. k. Contact the manufacturer or distributor if you suspect defective primary, secondary or monitor interlock switches,...
Service Manual
Page 23
...Insert the plug 4.Overhauling them . Large amount of the magnetron or the capacitor loosed. circuited. The door hook broken. The plugs of microwave leakage CAUSE 8A fuse broken. The plug falls off The screws which fix the magnetron loosed 21 REPAIRING MEANS Change a new fuse. Change... food can be heated 2.When starting the oven, it can heat, but the turntable tray is on 4. The oven can 't heat, and with "wenwen" noise. 7. Change a new capacitor. COMMON BREAKDOWN OF MICROWAVE OVEN AND MEANS OF REPAIRING PHENOMENON 1. Adjust the connection or replace it Change a...
...Insert the plug 4.Overhauling them . Large amount of the magnetron or the capacitor loosed. circuited. The door hook broken. The plugs of microwave leakage CAUSE 8A fuse broken. The plug falls off The screws which fix the magnetron loosed 21 REPAIRING MEANS Change a new fuse. Change... food can be heated 2.When starting the oven, it can heat, but the turntable tray is on 4. The oven can 't heat, and with "wenwen" noise. 7. Change a new capacitor. COMMON BREAKDOWN OF MICROWAVE OVEN AND MEANS OF REPAIRING PHENOMENON 1. Adjust the connection or replace it Change a...
Service Manual
Page 24
...earthing insulation resistance of all the Test where is too thin cause the wave guide opening not in good earth. SPECIFICATIONS Power Consumption: Microwave Power Output: Operation Frequency: Outside Dimensions(H×W×D): Oven Cavity Dimensions(H×W×D): Oven Capacity: Cooking Uniformity: Net Weight: 120V...~60Hz, 1450W 1000W 2450MHz 11.5×17.9×14.5 inches. 8.0×11.7×11.1 inches. 0.7cu.ft Turntable System (Φ12 3/8" ) Approx. 30.2lbs. 22 Worn out and aged after long time operating tighten the screws Thick the copper filament...
...earthing insulation resistance of all the Test where is too thin cause the wave guide opening not in good earth. SPECIFICATIONS Power Consumption: Microwave Power Output: Operation Frequency: Outside Dimensions(H×W×D): Oven Cavity Dimensions(H×W×D): Oven Capacity: Cooking Uniformity: Net Weight: 120V...~60Hz, 1450W 1000W 2450MHz 11.5×17.9×14.5 inches. 8.0×11.7×11.1 inches. 0.7cu.ft Turntable System (Φ12 3/8" ) Approx. 30.2lbs. 22 Worn out and aged after long time operating tighten the screws Thick the copper filament...
Service Manual
Page 25
COMPONENT CODE NO. Name QTY C01 GA-EM-U1000C01 P.C board 1 C02 GA-EM-U1000C02 turntable motor 1 GA-EM-U1000W03 power cord 1 C03 GA-EM-U1000C03 power cord 1 C04 GA-EM-U1000C04 wire harness 1 C05 GA-EM-U1000C05 transformer 1 C06 GA-EM-U1000C06 microswitch 2 C07 GA-EM-U1000C07 microswitch 1 C08 GA-EM-U1000C08 magnetron 1 23 MICROWAVE OVEN EXPLODED DRAWING EM-U1000BW Parts & Components List PART NO.
COMPONENT CODE NO. Name QTY C01 GA-EM-U1000C01 P.C board 1 C02 GA-EM-U1000C02 turntable motor 1 GA-EM-U1000W03 power cord 1 C03 GA-EM-U1000C03 power cord 1 C04 GA-EM-U1000C04 wire harness 1 C05 GA-EM-U1000C05 transformer 1 C06 GA-EM-U1000C06 microswitch 2 C07 GA-EM-U1000C07 microswitch 1 C08 GA-EM-U1000C08 magnetron 1 23 MICROWAVE OVEN EXPLODED DRAWING EM-U1000BW Parts & Components List PART NO.
Service Manual
Page 26
...-EM-U1000P19 sponge 1 GA-EM-U1000W43 carton 1 P43 P20 GA-EM-U1000P20 upper hinge 1 GA-EM-U1000P43 carton 1 P21 GA-EM-U1000P21 mica sheet 1 P44 GA-EM-U1000P44 packing belt 1 P22 GA-EM-U1000P22 shaft 1 P45 GA-EM-U1000P45 packing nail 8 P23 GA-EM-U1000P23 glass tray 1 P46 GA-EM-U1000P46 Pc board holder 1 P24 GA-EM-U1000P24 turntable support 1 P47 GA-EM...
...-EM-U1000P19 sponge 1 GA-EM-U1000W43 carton 1 P43 P20 GA-EM-U1000P20 upper hinge 1 GA-EM-U1000P43 carton 1 P21 GA-EM-U1000P21 mica sheet 1 P44 GA-EM-U1000P44 packing belt 1 P22 GA-EM-U1000P22 shaft 1 P45 GA-EM-U1000P45 packing nail 8 P23 GA-EM-U1000P23 glass tray 1 P46 GA-EM-U1000P46 Pc board holder 1 P24 GA-EM-U1000P24 turntable support 1 P47 GA-EM...