Sharp R-24AT, R-22AT service manual Figure O-1 Oven Schematic-OFF Condition

Page 34

R-22AT

R-24AT

SCHEMATIC

NOTE: CONDITION OF OVEN

1.POWER SUPPLY CONNECTED AND/OR 1MINUTE AFTER DOOR CLOSED OR COOK OFF.

2.

.

APPEAR ON DISPLAY.

NOTE: Indicates components with potential above 250 V.

 

 

 

TF1: TEMP. FUSE 150°C

(Upper Mag.)

(Front)

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

T3: TOUCHCONTROL TRANSFORMER

FUSE 2.5A

 

3

 

 

CONTROL UNIT

 

 

 

RY1

 

 

 

CN-A

 

CN-A

5

 

1

 

 

 

TF3: EXHAUST TEMP. FUSE 120°C

 

OVEN LAMP

OL

 

 

 

 

6

 

SWITCH

 

 

 

 

STOP

MONITOR

 

 

 

 

3

 

 

 

 

5

 

 

 

 

 

 

4

SW5:

 

 

RELAY

 

RELAY

2

SWITCH

SW4:

 

 

1

 

 

 

 

 

 

 

RY4:

COOK

RY3:

COOK

 

TH3:

 

 

 

 

 

 

 

 

 

 

 

 

EXHAUST

 

 

 

 

 

 

THERMISTOR

 

 

 

 

 

5

 

 

 

 

 

 

4

 

 

 

 

 

 

3

 

 

 

 

 

 

2

 

 

 

 

 

 

1

TH1:

 

 

 

 

 

MAGNETRON

 

 

 

 

 

 

 

 

 

 

 

 

THERMISTOR

 

SM ANTENNA

MOTOR SM

 

 

(Upper)

F2:FUSE F10A

 

BM

BLOWER MOTOR

 

 

 

 

 

SW2:

 

 

 

 

 

 

INTERLOCK SWITCH

 

TF1:

TEMP. FUSE 150°C (Lower Mag.)

SWITCH

MONITOR

SW3:

TH2:

MAGNETRON THERMISTOR (Lower)

F1: FUSE F10A

HIGH VOLTAGE

TRANSFORMER

T1:

 

HIGH VOLTAGE

TRANSFORMER (Rear)

T2:

 

C1: H.V. CAPACITOR 0.94µF/ AC2300V

F4: H.V.FUSE 0.80 A

C2: H.V. CAPACITOR 0.94µF/ AC2300V

F5: H.V.FUSE 0.80 A

RECTIFIER

MG1: MAGNETRON (Upper)

H. V.

 

RECTIFIER

MG2: MAGNETRON (Lower)

H. V.

 

SW1:

INTERLOCK SWITCH

Figure O-1 Oven Schematic-OFF Condition

SCHEMATIC

NOTE: CONDITION OF OVEN

1. FOR 1MINUTE AFTER DOOR CLOSED.

2.

.

APPEAR ON DISPLAY.

NOTE: Indicates components with potential above 250 V.

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

TRANSFORMER

TOUCH CONTROL

T3:

CN-A

EXHAUST

TEMP. FUSE 120°C

TF3:

 

5

 

 

3

 

 

 

 

 

 

SWITCH

TF1: TEMP. FUSE 150°C

VOLTAGEHIGHT1:

TRANSFORMER (Front)

 

 

 

 

 

 

 

 

(Upper Mag.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TF1:

 

 

 

 

 

 

 

 

 

 

 

 

TEMP. FUSE 150°C

 

 

 

 

 

 

 

 

 

 

 

 

(Lower Mag.)

 

 

FUSE

2.5A

 

 

RELAY

 

RELAY

6

 

MONITORSW4:

SW3: MONITOR SWITCH

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

SW5:

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

STOP

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

CONTROL

 

 

 

 

 

 

1

 

 

 

 

 

UNIT

 

RY4:

COOK

RY3:

COOK

 

TH3:

 

 

 

 

RY1

 

 

 

 

 

2

EXHAUST

 

 

VOLTAGEHIGH

TRANSFORMER (Rear)

 

 

 

 

 

THERMISTOR

 

TH2:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

MAGNETRON

 

 

 

 

 

 

 

 

 

 

 

THERMISTOR (Lower)

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

CN-A

 

 

 

 

 

1

TH1:

 

 

T2:

 

 

 

1

 

 

 

 

 

MAGNETRON

 

 

 

 

 

 

 

 

 

 

 

THERMISTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Upper)

 

F1: FUSE F10A

 

 

OVENLAMP

OL

SM ANTENNA

MOTOR SM

 

BM

SW2:

F2: FUSE F10A

 

 

 

 

 

 

 

 

 

 

INTERLOCK SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

SW1:

 

 

 

 

 

 

 

 

 

 

 

 

INTERLOCK SWITCH

 

 

C1: H.V. CAPACITOR 0.94µF/ AC2300V

F4: H.V.FUSE 0.80 A

C2: H.V. CAPACITOR 0.94µF/ AC2300V

F5: H.V.FUSE 0.80 A

RECTIFIER

MG1: MAGNETRON (Upper)

H. V.

 

RECTIFIER

MG2: MAGNETRON (Lower)

H. V.

 

Figure O-2 Oven Schematic-IDLE Condition (Door opened condition)

32

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Image 34
Page 33 Page 35
Contents Table of Contents Commercial Microwave OvenRemember to Check 3D Remember to Check 4R22AT/ R-24AT Sharp Corporation OSAKA, JapanCommercial Microwave Oven General Important InformationThis Appliance Must be Earthed SpecificationDescription Brown LiveAppearance View Installation InformationDisplay and Indicators Auto Touch Control PanelMicrowave Cooking Condition Operation SequenceIdle Condition Microwave Variable CookingTWO Magnetron Operation System Figure B-1. High Voltage CircuitFunction of Important Components Troubleshooting Guide Possible Cause and Defective Parts EEP ROM KEY Unit Touch Control Transformer T3Procedure Letter Component Test Magnetron Test Test ProceduresMicrowave Output Power 1 litre water load Power Test Procedures Letter Component TestMicrowave Output Power 2000 cc alternative method Carry OUT 4R Checks High Voltage Rectifier Assembly Test Carry OUT 3D ChecksSwitch Test Carry OUT 4R ChecksWeak Point F3 Test Carry OUT 3D Checks Procedure Letter Component TestTemperature Fuse TF1, TF2, TF3 Test Fuse F1, F2 F10A Test Carry OUT 3D ChecksNoise Filter Test Touch Control Panel Assembly TestMotor Winding Test High Voltage Fuse F4, F5 Test Carry OUT 3D ChecksRY1 KEY Unit TestRelay Test RY3Occurrence Cause or Correction Touch Control Panel Assembly Description of LSI LSIIXA222DRInternal clock oscillation frequency setting input Signal to sound buzzerSignal synchronized with commercial power source frequency Power source voltageKey strobe signal Digit selection signalSound Voltage level control terminal Shapes of Electronic Components ServicingServicing of Touch Control Panel Servicing Tools Other PrecautionsPAD Order Display Phone Other Checking and Clearing PROCE- Dure for Procedure for Entering toDefrost Using lead-free wire solder Precautions for Using LEAD-FREE SolderSET Number Double Quantity Check Signal Employing lead-free solderOuter CASE, Rear Cabinet and Power Supply Cord Removal Component Replacement and Adjustment ProcedureHigh Voltage Transformers Removal Magnetrons Removal Magnetron Thermistor ReplacementRe-install RemovalBlower Motor Removal HOW to Release the Positive Lock ConnectorTerminal Insulator Replacement Stirrer Motors Upper and Lower RemovalControl Panel Assembly Removal Control Panel Assembly and Control Unit RemovalPower Supply Cord Replacement HOW to Attach Membrane Switch and Graphic SheetAfter adjustment, make sure of the following Door Replacement and AdjustmentRemoval Choke Cover Removal Door DisassemblyDoor Components Removal Door Case Removal Service InformationUpper and Lower Latch Heads Removal Door Glass RemovalMicrowave Measurement ProcedurePreparation Figure O-1 Oven Schematic-OFF Condition Figure O-3 Oven Schematic-Cooking Condition Figure S-1. Pictrorial Diagram PanelCircuit DG1Figure S-3. Printed Wiring Board Electoric Parts Parts ListParts marked * are used in voltage more than Cabinet PartsOven Parts RH-IXA222DRZZ LSI RH-IXA298DRZZ EepromMiscellaneous Door PartsSCRE,NUTS and Washers Packing and Accessories HOW to Order Replacement PartsModel Number 2. REF. no Description Oven and Cabinet Parts Control Panel Parts Door Parts Miscellaneous
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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.
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