Fig.3–1 is the practical circuit diagram of a microwave oven. Its corresponding working conditions are as follows: The door closed, SW1 and SW2 turned on, SW3 closed, power control relay has no power, R1, R2 is cut off. When cooking, touch the starting switch to power the timer and the power relay. RY1, RY2 closed the power supply to the anode of the magnetron and the filament, changing the power frequency electric energy to microwave energy, the microwave energy then transferred to the heating chamber for food heating. At the same time, the lamp turned on, the fan motor begins to cool the magnetron. The turntable motor set off to drive the food around and making the food heated evenly. The microcomputer begins reckon the time, when it reached the sets time, power relay are cut off, the power of the lamp, all the motor and the magnetron are cut off, the food – heating process ended. During the heating, if the door was opened, the interlock S1, S2 will cut off, S3 will close, all the motors and the magnetron will also be cut off, the lamp will turn on, the oven stop heating immediately. If heating need go on, just push down the starting button and closed the door, the oven will continue its working. When something wrong with the fan motor or the air vent was blocked that breakdown the cooling system, the magnetron temperature would rise high very quickly. When the temperature reached the working point of the thermal cutout (S6), S6 will be cut off immediately to cut off the power supply to the magnetron and the magnetron will stops working right away. The PC board is cut off to prevent the magnetron from being damaged by overheating. When the thermal cutout is cut off, the magnetron, motors and the lamp would stop working simultaneously. Moreover, the thermal cutout has the self - resuming character, when the temperature lowered, it will resume to close condition.

Circuit diagram of computer controlled microwave ovens: Circuit diagram for mechanical controlled microwave ovens:

4. 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.

4.1THE CABINET

To disassemble the cabinet

1.Pull out the power plug.

2.Loosen the four screws at the back of the oven with a “+”- screwdriver. (FIG.4-1a)

3.Push the cabinet back 25mm according to the arrow direction shown at FIG.4-1 (b), and the cabinet can be taken off.

To assemble the cabinet

1.Put the cabinet on the oven, and push it full ahead.

2.Check whether the up, right and left troughs have been inserted with the curved with the curved rim of the oven (FIG.4-1 (b)). If the cabinet and the oven are not tallied exactly, then it should be reassembled or those untallied parts should be smoothed.

3.Tighten those four screws, please make sure that one of the screws should have a plum blossom shape washer to keep a good earth.

11

Page 11 Page 13
Page 12
Image 12
Sanyo SM-GA0005 service manual HOW to Assemble and Disassemble Microwave Oven Components, Cabinet
Page 11 Page 13

SM-GA0005 specifications

The Sanyo SM-GA0005 stands out as an innovative device that blends functionality and design, catering to the needs of modern users. This device has garnered attention for its robust set of features, cutting-edge technologies, and practical characteristics that enhance user experience.

One of the most prominent features of the Sanyo SM-GA0005 is its sleek design, which combines aesthetics with ergonomic functionality. Its lightweight body makes it easy to carry, and the minimalist approach to its interface allows for intuitive navigation. The display is vibrant, offering sharp visuals that enhance multimedia experiences, from watching videos to viewing photographs.

In terms of performance, the SM-GA0005 is powered by a high-efficiency processor, which ensures smooth multitasking and lag-free operation. Whether users are browsing the internet, streaming content, or using demanding applications, this device holds up under pressure. The internal storage options are ample, allowing users to save a significant amount of data, from documents to media files, without the need for external storage solutions.

Connectivity is another essential aspect of the Sanyo SM-GA0005. It supports various connectivity options, including Wi-Fi and Bluetooth, ensuring users can stay connected regardless of their circumstances. The inclusion of advanced wireless technology allows for swift data transfer and a stable internet connection, essential for both personal and professional use.

Battery life is a crucial characteristic of any modern device, and the SM-GA0005 excels in this regard. With an energy-efficient battery, users can expect prolonged usage without the hassle of frequent recharging. This is particularly beneficial for those who are always on the go, as it ensures the device remains operational throughout the day.

In addition, the Sanyo SM-GA0005 boasts a comprehensive set of security features, including biometric authentication and encryption options, providing users with peace of mind when it comes to data protection. This emphasis on security reflects the growing concern over digital privacy and the need for safe, reliable devices.

Overall, the Sanyo SM-GA0005 represents an impressive combination of style and substance, making it an appealing choice for consumers seeking an efficient, reliable smartphone. Its blend of performance, connectivity, battery life, and security features solidifies its place in the competitive market, catering to diverse user needs and preferences.
Top Page Image Contents