Sharp R-22AT Digit selection signal, Sound Voltage level control terminal, Key strobe signal

Page 21

R-22AT

R-24AT

Pin No.

Signal

I/O

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

§(50Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-31(V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

41-46

P17-P12

OUT

Segment data signal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal similar to P23..

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

47-48

P11-P10

OUT

Digit selection signal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

 

 

 

The relation between digit signal and digit

§(50Hz)

 

 

 

 

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

are as follows:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

Digit signal

Digit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P11

 

 

 

 

 

 

 

 

 

 

 

 

 

-31(V)

 

 

 

P11

1st.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P10

2nd.

P10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P07

3rd.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P06

4th.

P07

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P05

5th.

P06

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P04

6th.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normally, one pulse is output in every ß

 

 

 

 

 

 

 

 

 

 

 

 

 

P05

 

 

 

 

 

 

 

 

 

 

 

 

 

period, and input to the grid of the Fluores-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cent Display.

 

P04

 

 

 

 

 

 

 

-31(V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49-52

P07-P04

OUT

Digit selection signal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal similar to P11.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

53-55

P03-P01

OUT

Segment data signal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal similar to P23.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

56

P00

-

Terminal not used.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

57-58

P37-P36

OUT

(Sound) Voltage level control terminal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This terminal (P37) is to control volume level of buzzer sound with terminals P36. Since the volume level of buzzer sound depends on voltage energized, it is control level in 3 steps by combining signal levels for P37 and P36. Relationship of signal level combination to sound volume level is shown in the following table, 1~3 in the table, however, are indicated in the descending order from the maximum level of sound volume through the minimum level.

Sound Volume

P36

P37

 

 

1, (Max.)

L

L

A A : 1,(Max) 20V

2,

H

L

2,

13V

3, (Min.)

L

H

3,(Min)

7V

 

 

*At Output terminal P47, rectangular wave signal of 2.5kHz is output.

59

P35

-

Terminal not used.

60

P34

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to P24 - P27 terminal while

 

 

 

one of G-4 line keys on key matrix is touched.

 

 

 

 

61

P33

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to P24 - P27 terminal while

 

 

 

one of G-5 line keys on key matrix is touched.

 

 

 

 

62

P32

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to P24 - P27 terminal while

 

 

 

one of G-6 line keys on key matrix is touched.

 

 

 

 

63

P31

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to P24 - P27 terminal while

 

 

 

one of G-7 line keys on key matrix is touched.

 

 

 

 

64

P30

OUT

Key strobe signal.

 

 

 

Signal applied to touch-key section. A pulse signal is input to P24 - P27 terminal while

 

 

 

one of G-8 line keys on key matrix is touched.

19

Image 21
Contents Commercial Microwave Oven Table of ContentsRemember to Check 4R Remember to Check 3DCommercial Microwave Oven Sharp Corporation OSAKA, Japan22AT/ R-24AT General Important InformationDescription SpecificationThis Appliance Must be Earthed Brown LiveDisplay and Indicators Installation InformationAppearance View Auto Touch Control PanelIdle Condition Operation SequenceMicrowave Cooking Condition Microwave Variable CookingFigure B-1. High Voltage Circuit TWO Magnetron Operation SystemFunction of Important Components Troubleshooting Guide EEP ROM KEY Unit Touch Control Transformer T3 Possible Cause and Defective PartsTest Procedures Procedure Letter Component Test Magnetron TestMicrowave Output Power 1 litre water load Test Procedures Letter Component Test PowerMicrowave Output Power 2000 cc alternative method Switch Test High Voltage Rectifier Assembly Test Carry OUT 3D ChecksCarry OUT 4R Checks Carry OUT 4R ChecksTemperature Fuse TF1, TF2, TF3 Test Procedure Letter Component TestWeak Point F3 Test Carry OUT 3D Checks Fuse F1, F2 F10A Test Carry OUT 3D ChecksMotor Winding Test Touch Control Panel Assembly TestNoise Filter Test High Voltage Fuse F4, F5 Test Carry OUT 3D ChecksRelay Test KEY Unit TestRY1 RY3Occurrence Cause or Correction Touch Control Panel Assembly LSIIXA222DR Description of LSISignal synchronized with commercial power source frequency Signal to sound buzzerInternal clock oscillation frequency setting input Power source voltageDigit selection signal Key strobe signalSound Voltage level control terminal Servicing Shapes of Electronic ComponentsServicing of Touch Control Panel Other Precautions Servicing ToolsPAD Order Display Phone Procedure for Entering to Other Checking and Clearing PROCE- Dure forDefrost SET Number Double Quantity Check Signal Precautions for Using LEAD-FREE SolderUsing lead-free wire solder Employing lead-free solderComponent Replacement and Adjustment Procedure Outer CASE, Rear Cabinet and Power Supply Cord RemovalHigh Voltage Transformers Removal Re-install Magnetron Thermistor ReplacementMagnetrons Removal RemovalTerminal Insulator Replacement HOW to Release the Positive Lock ConnectorBlower Motor Removal Stirrer Motors Upper and Lower RemovalPower Supply Cord Replacement Control Panel Assembly and Control Unit RemovalControl Panel Assembly Removal HOW to Attach Membrane Switch and Graphic SheetDoor Replacement and Adjustment After adjustment, make sure of the followingRemoval Door Disassembly Choke Cover RemovalDoor Components Removal Upper and Lower Latch Heads Removal Service InformationDoor Case Removal Door Glass RemovalProcedure Microwave MeasurementPreparation Figure O-1 Oven Schematic-OFF Condition Figure O-3 Oven Schematic-Cooking Condition Figure S-1. Pictrorial Diagram DG1 PanelCircuitFigure S-3. Printed Wiring Board Parts marked * are used in voltage more than Parts ListElectoric Parts Cabinet PartsRH-IXA222DRZZ LSI RH-IXA298DRZZ Eeprom Oven PartsDoor Parts MiscellaneousSCRE,NUTS and Washers HOW to Order Replacement Parts Packing and AccessoriesModel Number 2. REF. no Description Oven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous
Related manuals
Manual 32 pages 63.06 Kb

R-22AT, R-24AT specifications

The Sharp R-24AT and R-22AT microwave ovens are advanced kitchen appliances designed to enhance cooking convenience, efficiency, and versatility. Both models incorporate innovative technologies and features that cater to modern cooking needs.

The Sharp R-24AT boasts a robust 900 watts of cooking power, enabling users to prepare a wide variety of meals quickly and effectively. Its spacious 24-liter capacity is suitable for families and those who enjoy entertaining. One of the standout features of the R-24AT is its intelligent sensor technology, which automatically detects humidity levels in the cooking food. This innovative feature ensures optimal cooking times and temperatures, resulting in perfectly cooked dishes without the guesswork.

Another key technology in the R-24AT is the inverter cooking system. This system provides a seamless flow of power throughout the cooking process, allowing for more precise temperature control. Unlike traditional microwaves that operate in full power or off, inverter technology ensures consistent heat, which is particularly beneficial for tasks such as defrosting, reheating, and simmering.

The Sharp R-22AT, while slightly more compact with a 22-liter capacity, also delivers impressive performance with 800 watts of power. It features a similar inverter cooking system that guarantees even cooking results. Both models come with multiple auto-cook presets, providing users with a selection of quick options for common dishes such as popcorn, pizza, and oatmeal. This feature streamlines meal preparation and reduces the time spent on planning meals.

In addition, the user-friendly control panel on both models includes a combination of push-button and rotary dial controls for easy navigation. The inclusion of a bright LED display further enhances usability, allowing cooks to monitor cooking times and settings easily.

Safety is another critical aspect of the Sharp R-24AT and R-22AT. Both models come equipped with a child lock feature, ensuring peace of mind in homes with young children. The stainless steel interiors of these microwaves facilitate easy cleaning, while their sleek design adds a modern touch to any kitchen.

In summary, the Sharp R-24AT and R-22AT microwave ovens stand out for their advanced cooking technologies, user-friendly features, and thoughtful design. They empower home cooks to prepare meals with precision and ease, making them a valuable addition to any kitchen.