Related Manuals for Sanyo EM-S1053
Summary of Contents for Sanyo EM-S1053
- Page 1 Microwave Oven Range: EM-G2053 EM-S1063 EM-G2063 EM-S1553 EM-S1563 EM-G2563 EM-S3553 EM-G4753 Service Manual...
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Page 2: Table Of Contents
INTRODUCTION This Microwave Oven Service Manual is printed in a loose-leaf format. Each part is divided into sections relating to a general group of components and each section is subdivided into various parts describing a particular component or service procedure. The subdividing of the subject matter plus the loose leaf form will facilitate the updating of the manual as new or revised components and service procedures are introduced. -
Page 3: Safety Precautions
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY A. Do not operate or allow the oven to be operated with the door open. B. Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary. - Page 4 loss of ion. Usually, food is constituted of organism (plant and animal). The organism is formed by all kinds of polar water molecule, polar protein molecule, and all sorts of saltion. The center of gravity of the positive and negative charge in the molecule is not coinciding.
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Page 5: The Structure And Working Principle Of Microwwave Oven
Microwave oven can be classified to many kinds according to various construction, volume and control function. But anyhow, the main electric parts are all 230V composed of high voltage rectification, cooling system. Microwave generator, electric control system and heating chamber (FIG.2-1). Its working process are as follows: 230V power frequency voltage transferred to the rectifier through electric control system, and then be changed to 4000V direct volt-age by the rectifier, and be then... -
Page 6: Cooling System
between the cathode and anode of the magnetron, a filament voltage to the cathode filament of the magnetron. The working process of the magnetron: When the anode volt-age gradually rises from zero, the anode current is approx.zero, the power is very small as well. When the anode voltage rises to “THRESHOLD” voltage value, the magnetron starts oscillating, and the anode current would increase obviously, provided the anode voltage rises a little more, the anode current would increase a lot (FIG.2-4), and would reach the rate value quickly. - Page 7 There fixed hooks on the oven door, and opened two rectangle hole at the corresponding place at the right of the oven and the hook. Inside each rectangle hole, there fixed a micro switch. When the oven door closed, the two hook on it would insert into the rectangle hole, and just push down several micro switches.
- Page 8 Heating chamber is the place where the microwave and the food affect mutually. There are lots kinds of chamber. Accord-ing to the working characters, it can be classified to carton type, cavity type, radiation type, slow type (surface wave type), etc. The present adopt chamber for food cooking microwave oven is the typical carton type heating.
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Page 9: Typical Circuit Analyasis Of Microwave Oven
Recently, with the installation of noise filter in the current resistant trough, the effect to restrain the microwave leakage (include high subharmonic) have been much improved. We have introduced the structure and the working principle of the microwave oven previously. We shall analyze the complete set circuit of the microwave oven link with the practical circuit at this chapter. -
Page 10: How To Assemble And Disassemble Microwave Oven Components
In the following pages, we will introduce the ways in which the various parts of a typical microwave oven can be disassembled and assembled. To disassemble the cabinet Pull out the power plug. Loosen the four screws at the back of the oven with a “+”- screwdriver. (FIG.4-1a) Push the cabinet back 25mm according to the arrow direction shown at FIG.4-1 (b), and the cabinet can be taken off. -
Page 11: The Control Panel And The Door Release Mechanism
out the cover. Take off the two screws at the door side with a “+”-screwdriver l at ch sw i t ch hol der Take off the hinge (up)(FIG.4- 2). l at ch sw i t ch hol der Apart the doorframe from the doorplate l at ch sw i t ch (FIG.4-2). -
Page 12: The Magnetron
Take off the cabinet. Discharge between one end of the capacitor and the baseboard with a screwdriver. To disassemble Pull out the terminal plug of the time and power distributor. Take off the screw which fix the control panel with a “+” – screwdriver (FIG.4 - 6) Take off the control panel. -
Page 13: The Fan Motor
Take off the right baseboard, the seat and the rubber space between the transformer and the oven. screw base board transformer seat Fig.4-10 Fig.4-9 to mount the transformer, Place the transformer as the FIG.4 - 9, tear off the protective paper of the rubber lining tape, stick it on the transformer as shown on the figure. -
Page 14: The Capacitor
back board fan motor screw Fig.4-14 Fig.4-13 Firstly, do as the 1, 2, 3, steps of of this part. To disassemble, Pull the wires of the capacitor out (4-15). fan holder capacitor Loosen and take out the screw which fix the capacitor clip with a “+”... -
Page 15: The Door Safty Interlocks
wires (4 -17). Assembling steps: Put the motor shaft into its connecting hole, and fix the motor with two screws (FIG.4 - 17). Plug in the two wires. Assemble and fix the middle base board with two screws (FIG.4 - 18). Turn the oven back. -
Page 16: The Control Panel Of A Typical Microwave Oven
steps but the screw is the one below (FIG.4 - 21). Pull out the power plug. Take off the cabinet. light tough switch Discharge between one end of the capacitor and the PC board baseboard with a screwdriver. control panel Means of dismantling the PC board and door release mechanism: (1) Pull out all the terminal plug of the PC board. -
Page 17: Spot Examining Steps Of The Microwave Oven
are through inspecting and listening. On the basis of large amounts of perceptual knowledge, you can judge and analysie the break down quickly and correctly. Inspect whether the oven shape is disordered and where is the disordered position, If any. It is normal if the cabinet disordered a little, but abnormal if the oven, the door disordered, the door hook broken, the door crooked, or there are too much looseness between the door and the oven after the door is closed . - Page 18 (1) Examine when the lamp is on, the glass tray is cycling, the fan operating in normal: Take off the cabinet, starting the oven, measure the plug of the transformer with an avometer to see whether it is enough to 230V.
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Page 19: Repairing Method Of Several Breakdown
If the transformer is normal, then the high voltage capacitor should be checked. Pull out the connecting plug of the capacitor, and measure it with R×1 grade of an avometer, the two rods of the avometer connect the two polarity of the capacitor. When they just connected, the reading of the avometer should be zero, then increases to nine megaohm slowly. - Page 20 (5) The door and the oven are serious loosed after the door closed. (6) The crack of the door shielding net cover. Before repairing, check whether the above listed point are existed, if not, can you start the microwave oven. Place a graduate of about 275ml water at the middle of the glass tray, close the door, time set at 3 minutes, power at high, make the oven operating in normal.
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Page 21: The Characters Requirements Of Microwave After It Has Been Repaired
Pull out the two terminal plugs of the lamp. Measure the two plugs of the lamp with the R×100 grade of a avometer. If it is open – circuited, it indicates the lamp has broken, and should be replaced by a same model one. 4.Means of repair when the oven stop working after several minutes operating. -
Page 22: Critical Parts Servicing
The following instructions are CRITICAL to the owner’s safety. Be sure to follow all the instructions. Contact the manufacturer or distributor if you have any question. If the oven is operative prior to servicing, a Microwave Leakage Test (a. k. a. Microwave Emission Check) should be performed prior to servicing the oven Refer to Section 7.3, Microwave Leakage Test. - Page 23 the capacitor is punctured. Change interlock switch. The pilot switch can’t cut off. Adjust the connection or The interlock switch hasn’t closed. replace it by a new one. The power plug and the socket are not in good connection. Change a new hook. The door hook broken.
- Page 24 Attachment: EM-S1053 explore view and parts list EM-G2053 explore view and parts list EM-S1553 explore view and parts list EM-G2553 explore view and parts list EM-S1063 explore view and parts list...