Sharp R-24AT Possible Cause and Defective Parts, EEP ROM KEY Unit Touch Control Transformer T3

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R-22AT

R-24AT

 

EEP ROM I-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

KEY UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TOUCH CONTROL TRANSFORMER T3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Due to programme lock

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Over the max. cooking time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No power at wall outlet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOME FUSE or BREAKER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mis adjustment of switches

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P

FUSE 2.5A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O

RELAY RY-4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O

RELAY RY-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O

RELAY RY-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M

TOUCH CONTROL PANEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Opened wire harness

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shorted wire harness

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER SUPPLY CORD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K

NOISE FILTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OVEN LAMP OR SOCKET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J

BLOWER MOTOR BM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J

ANTENNA MOTORS SM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

EXHAUST THERMISTOR TH3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

MAGNETRON THERMISTOR (Lower) TH2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I

MAGNETRON THERMISTOR (Upper) TH1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

HIGH VOLTAGE FUSE F5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

HIGH VOLTAGE FUSE F4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

EXHAUST TEMPERATURE FUSE TF3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

MAGNETRON TEMPERATURE FUSE TF2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

MAGNETRON TEMPERATURE FUSE TF1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F

WEAK POINT F3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G

FUSE F10A F2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G

FUSE F10A F1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E

STOP SWITCH SW5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E

MONITOR SWITCH SW4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E

MONITOR SWITCH SW3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E

NTERLOCK SWITCH SW2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

INTERLOCK SWITCH SW1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

H.V. CAPACITOR C2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

H.V. CAPACITOR C1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H.V. WIRE HARNESS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

H.V. RECTIFIER ASSEMBLY FOR MG2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

H.V. RECTIFIER ASSEMBLY FOR MG1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

HIGH VOLTAGE TRANSFORMER T2 (Rear)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

HIGH VOLTAGE TRANSFORMER T1 (Front)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

MAGNETRON MG2 (Lower)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

MAGNETRON MG1 (Upper)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TESTPROCEDURE

POSSIBLE CAUSE AND DEFECTIVE PARTS

PROBLEM

“ . “ does not appear on display when power cord is plugged into wall outlet.

Control panel can not accept key in.

Fuse F1 or F2 blows when the door is opened.

Home fuse blows when power cord is plugged into wall outlet.

Weak point F3 blows when power cord is plugged into wall outlet.

Oven lamp, fan motor and antenna motors do not work for 1 minute when the door is opened or after cooking.

Fuse F1 or F2 blows when power cord is plugged into wall outlet.

Oven lamp does not light when door is opened. (Blower and antenna motors work)

Blower motor does not work when door is opened. (Oven lamp lights and antenna motors work)

“EE 1” (Magnetron MG1 failure)

“EE 2” (Magnetron MG2 failure)

“EE 3” (Magnetron MG1 and MG2 failure)

“EE 6” (Exhaust thermistoropen)

“EE 7” (Exhaust air temperature is high)

“EE 9” (Exceeded max. heating time)

Oven lamp, blower motor and antenna motors do not work.

Oven lamp does not work.

Blower motor does not work.

Oven does not stop after end of cooking cycle.

 

Home fuse blows when starting the oven.

Oven goes into cook cycle but shuts down before end of cooking cycle.

It passed more than 1 minute after cooking but oven lamp, blower motor and stirrer motors do not stop.

“EE 16” (Thermistor of magnetron are open.)

“EE 17” (Magnetron temperature is high.)

“EE 19” (Magnetron thermistor short)

“EE 10” (Fault of memory)

Antenna motors do not work.

 

 

CONDITION

 

 

 

 

OFF CONDITION

 

 

 

 

 

 

 

 

 

ON

CONDITION

8

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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
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.
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