Maytag ACO1840AC, ACO1560AB, ACO1530AB, ACO1840AB, ACO1560AC, ACO1560AS Troubleshooting Procedures

Page 13

Troubleshooting Procedures

"PLEASE TOUCH TIME OF DAY"

does not appear in

the display,

when unit is plugged in.

1.Check power supply.

2. Check fuse.

3.Check oven thermostat.

Measure voltage

between pin 1 and pin 3 of CN1 connector

		YES
	Is 120 volts	Replace
	indicated.	circuit
		board.
	NO
	Verify proper
	connection of	Unit operates.
	circuit board.	Unit operates.
	circuit board.

Display does not

indicate correct number

pressed or correct

indication when

programmed.

Measure resistance

of control key panel after removing

ribbon connector.

Key pad matrix is located in “Testing Procedures” on page 11.

Is continuity		Verify proper
indicated when		Verify proper
indicated when		connection of
key pad is		connection of
key pad is	YES	ribbon
pressed.	YES	ribbon
pressed.		connector.
		connector.	Does ribbon
NO			Does ribbon
NO			connector have
		NO	connector have
		NO	proper
			connection.
Replace			YES
control		Reconnect
key pad.		Reconnect
key pad.		ribbon connector
		for proper	Replace
		connection.	circuit
			board.
Unit operates.

©2002 Maytag Appliances Company

13

16021668 Rev. 0

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Contents Service Recognize Safety Symbols, Words, and Labels Customer Service Support CenterImportant Information Web Site Telephone NumberTable of Contents Important Product Information WiringGrounding Instructions Servicing of Grounded ProductsImportant Safety Information Microwave Leakage Testing General Information Vent grille Microwave Oven DescriptionOven control Testing Procedures High Voltage Diode High Voltage CapacitorHumidity Sensor RelayACO1560/MMV5156 models Pad Conn ACO1520/ACO1530 models Pad ConnACO1560/MMV5156 models ACO1840/MMV4184 models Pad ConnOven Thermostat Circuit BoardFuse Fan MotorTroubleshooting Procedures Adjust or Wire across Replace high Thermostat When Start pad is Check Power Supply Fuse Door Assembly Disassembly ProceduresDoor Disassembly GrilleBoard Control PanelControl Panel Removal Relay ACO1520*, ACO1530*, and MMV5156Outer Case Power TransformerScrew Control Panel Circuit Board RelayInterlock Door Latch Switches Stirrer Assembly some modelsDiode Adjusting InterlocksACO1840*, ACO1860*, JMV8196 MMV4184*, and MMV5186 High Voltage Capacitor RemovalPower Transformer Removal Magnetron Fan AssemblyTransformer Fuse RemovalMagnetron Thermal Fuse Magnetron Thermal FuseFan Motor Humidity Sensor RemovalLight Socket Base ThermostatTurntable Motor Vent BlowerWiring Diagram and Schematic ACO1560* and MMV5156* Models ACO18*, JMV8196*, MMV4184, and MMV5186* Models Appendix a Installation InstructionElectrical rating of this oven 120V AC 60Hz Avoid Electrical ShockDo not USE the Microwave Oven Do not expose yourself to excessive microwave energyParts, Tools, and Materials Tools and materials required for installationFollowing parts are supplied with the oven Preparing Venting System Preparing Electrical ConnectionRoof-Venting Roof VentingStandard Fittings Ductwork Length Room VentingWall Venting Installation Roof Venting InstallationRoom Venting Installation Recirculating Preparing Venting BlowerPreparing Wall and Upper Cabinet Preparing Template PlacementDrilling Holes in the Wall and Upper Cabinet Installing Mounting PlateAttaching Oven to the Wall Damper This page intentionally left blank Appendix B Cleaning the Grease Filters Care and CleaningCharcoal Filter Replacement Oven Light Replacement Cooktop/Night Light Replacement