Sharp R-22AT, R-24AT service manual Figure O-3 Oven Schematic-Cooking Condition

Page 35

SCHEMATIC

NOTE: CONDITION OF OVEN

1.DOOR CLOSED.

2.MANUAL REPEAT KEY TOUCHED.

3.COOKING TIME PROGREMMED.

4.START PAD TOUCHED.

R-22AT R-24AT

 

240V~50Hz

LIVE

230 -

BRN

 

 

 

BLU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

GRN/YLW EARTH

NOISE FILTER

L

F3 : WEAK POINT A017

 

NOISE SUPPRESSION COIL

DISCHARGE RESISTOR 680 kΩ 1/2W

LINE CROSS CAPACITOR 0.22µF/ AC250V

DISCHARGE RESISTOR 10 MΩ 1/2W

LINE BYPASS CAPACITORLINE BYPASS CAPACITOR 10000 pF/ AC250V10000 pF/ AC250V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TF1: TEMP. FUSE 150°C

T1: HIGH VOLTAGE

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Upper Mag.)

 

TOUCH CONTROL

 

 

 

 

 

 

 

 

 

 

 

SW4: MONITOR SWITCH

TF1:

 

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

TEMP. FUSE 150°C

 

 

 

 

 

 

 

 

 

 

 

(Lower Mag.)

 

 

 

 

3

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FUSE

2.5A

 

 

 

 

 

5

 

SW3: MONITOR SWITCH

 

 

 

 

 

 

 

4

SW5:

T3:

 

 

 

 

 

 

3

 

 

 

 

 

 

STOP

 

 

 

 

 

 

2

 

 

 

RELAY

 

RELAY

SWITCH

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

CONTROL

UNIT

 

RY4:

COOK

RY3:

COOK

 

TH3:

 

 

 

 

 

 

 

 

 

 

EXHAUST

 

 

HIGH VOLTAGE

TRANSFORMER

 

 

 

 

 

 

THERMISTOR

 

TH2:

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

MAGNETRON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

THERMISTOR (Lower)

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

RY1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

CN-A

 

 

 

 

 

1

TH1:

 

 

T2:

 

 

 

 

 

5

 

1

 

 

 

 

 

MAGNETRON

 

 

 

 

 

 

CN-A

 

 

 

 

 

 

 

THERMISTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Upper)

 

F1: FUSE F10A

 

 

 

 

EXHAUST TEMP. FUSE

120°C

OVENLAMP

OL

SM ANTENNA

SM

 

BM

 

F2: FUSE F10A

 

 

(Front)

 

C1: H.V. CAPACITOR

 

0.94µF/ AC2300V

 

0.80 A

RECTIFIER

F4:

 

H.V.FUSE

 

 

H. V.

(Rear)

 

C2: H.V. CAPACITOR

 

0.94µF/ AC2300V

 

F5:

RECTIFIER

H.V.FUSE

 

0.80 A

H. V.

 

MG1: MAGNETRON (Upper)

MG2: MAGNETRON (Lower)

N

TF3:

MOTOR

SW2:

INTERLOCK SWITCH

 

 

 

SW1:

 

 

INTERLOCK SWITCH

Figure O-3 Oven Schematic-Cooking Condition

33

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Page 34 Page 36
Contents Commercial Microwave Oven Table of ContentsRemember to Check 4R Remember to Check 3DGeneral Important Information Sharp Corporation OSAKA, JapanCommercial Microwave Oven 22AT/ R-24ATBrown Live SpecificationDescription This Appliance Must be EarthedAuto Touch Control Panel Installation InformationDisplay and Indicators Appearance ViewMicrowave Variable Cooking Operation SequenceIdle Condition Microwave Cooking ConditionFigure 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 PartsMicrowave Output Power 1 litre water load Test ProceduresProcedure Letter Component Test Magnetron Test Microwave Output Power 2000 cc alternative method Test Procedures Letter Component TestPower Carry OUT 4R Checks High Voltage Rectifier Assembly Test Carry OUT 3D ChecksSwitch Test Carry OUT 4R ChecksFuse F1, F2 F10A Test Carry OUT 3D Checks Procedure Letter Component TestTemperature Fuse TF1, TF2, TF3 Test Weak Point F3 Test Carry OUT 3D ChecksHigh Voltage Fuse F4, F5 Test Carry OUT 3D Checks Touch Control Panel Assembly TestMotor Winding Test Noise Filter TestRY3 KEY Unit TestRelay Test RY1Occurrence Cause or Correction Touch Control Panel Assembly LSIIXA222DR Description of LSIPower source voltage Signal to sound buzzerSignal synchronized with commercial power source frequency Internal clock oscillation frequency setting inputSound Voltage level control terminal Digit selection signalKey strobe signal Servicing of Touch Control Panel ServicingShapes of Electronic Components PAD Order Display Phone Other PrecautionsServicing Tools Defrost Procedure for Entering toOther Checking and Clearing PROCE- Dure for Employing lead-free solder Precautions for Using LEAD-FREE SolderSET Number Double Quantity Check Signal Using lead-free wire solderHigh Voltage Transformers Removal Component Replacement and Adjustment ProcedureOuter CASE, Rear Cabinet and Power Supply Cord Removal Removal Magnetron Thermistor ReplacementRe-install Magnetrons RemovalStirrer Motors Upper and Lower Removal HOW to Release the Positive Lock ConnectorTerminal Insulator Replacement Blower Motor RemovalHOW to Attach Membrane Switch and Graphic Sheet Control Panel Assembly and Control Unit RemovalPower Supply Cord Replacement Control Panel Assembly RemovalRemoval Door Replacement and AdjustmentAfter adjustment, make sure of the following Door Components Removal Door DisassemblyChoke Cover Removal Door Glass Removal Service InformationUpper and Lower Latch Heads Removal Door Case RemovalPreparation ProcedureMicrowave Measurement 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 Cabinet Parts Parts ListParts marked * are used in voltage more than Electoric PartsRH-IXA222DRZZ LSI RH-IXA298DRZZ Eeprom Oven PartsSCRE,NUTS and Washers Door PartsMiscellaneous Model Number 2. REF. no Description HOW to Order Replacement PartsPacking and Accessories Oven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous
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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.
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