Maytag MCE8000AY manual J1A

Page 17

Troubleshooting Procedures

!WARNING

To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing requires power.

Logic Board Connectors

Connector

Name

Pin

Description

Voltage

Comment/

Number

 

 

Connector Part Number

J1A

1-12

 

Left Keypad connector A

12 VDC

 

J1B

1-12

 

Left Keypad connector B

12 VDC

 

J2A

1-12

 

Right Keypad connector A

12 VDC

 

 

 

 

 

 

 

J2B

1-12

 

Right Keypad connector B

12 VDC

 

J3

1

 

Lower dryer thermistor

5 VDC

 

 

2

 

Lower dryer thermistor

5 VDC

 

 

3

 

Lower dryer moisture sensor

24 VDC

 

 

4

 

Lower dryer moisture sensor

24 VDC

 

 

 

 

 

 

 

 

5

 

Spare thermistor source

5 VDC

 

 

 

 

 

 

 

 

6

 

Spare thermistor return

5 VDC

 

 

 

 

 

 

 

 

7

 

Upper exhaust air thermistor

5 VDC

 

 

8

 

Upper exhaust air thermistor

5 VDC

 

J4

1

 

L1 to upper door switch

120 VAC

 

 

2

 

Upper door switch to Lamp

120 VAC

 

 

 

 

 

 

 

 

3

 

Chassis ground to logic board

Ground

 

 

 

 

 

 

 

J6A

1

 

12 VDC power

12 VDC

DC connections to Power &

 

 

 

 

 

Relay Board.

 

2

 

Power Supply Common

Common

 

3

 

24 VDC power

24 VDC

 

 

4

 

To shaker motor relay coil

12 VDC

 

 

5

 

To upper blower motor relay coil

12 VDC

 

 

 

 

 

 

 

 

6

 

To upper heater relay coil

12 VDC

 

 

 

 

 

 

 

 

7

 

To water valve relay coil

12 VDC

 

 

8

 

To spare relay coil

12 VDC

 

 

9

 

To upper exhaust damper relay

12 VDC

 

 

 

 

coil

 

 

 

10

 

To lower heater cycling relay coil

12 VDC

 

 

11

 

To lower heater center-tap relay

12 VDC

 

 

 

 

coil

 

 

 

12

 

To lower dryer motor relay coil

12 VDC

 

 

 

 

 

 

 

J10

1

 

VCC from logic board

5 VDC

 

 

 

 

 

 

 

 

2

 

Serial transmit signal

5 VDC

 

 

3

 

Serial receive signal

5 VDC

 

 

4

 

Serial signal common

DC GND

 

 

 

 

 

 

 

J10A

1

 

DC common

DC GND

 

 

 

 

 

 

 

 

2

 

Reset Signal

5 VDC

 

 

 

 

 

 

 

 

3

 

Serial transmit signal for logic

5 VDC

 

 

 

 

board

 

 

 

4

 

VCC from logic board

5 VDC

 

 

5

 

Serial receive signal for logic

5 VDC

 

 

 

 

board

 

 

 

6

 

VPP from programmer box

 

 

J11A

1

 

L1 for use on logic board

120 VAC

120 VAC connections to power &

 

 

 

 

 

relay board.

 

2

 

Upper door switch power to lamp

120 VAC

 

 

 

 

 

 

 

 

 

 

3

 

Lower door switch signal

120 VAC

 

 

 

 

 

 

 

 

4

 

Gas igniter sense signal

120 VAC

 

 

5

 

Neutral for switched 120 VAC

120 VACN

 

 

 

 

signals

 

 

 

 

 

 

 

 

©2003 Maytag Appliances Company

16022785 Rev. 0

17

Image 17
Contents Neptune DC Web Site Telephone Number Customer Service Support CenterRecognize Safety Symbols, Words, and Labels Table of Contents Important Safety Information About Ground Wires Electrical Service InformationGas Connection Information Electrical DryersImportant Safety Information Altitude Orifice Part Ft M Size # Number Testing for Gas LeaksGas Connection Parts and Accessories ServiceExtended Service Plan PropaneDrying Center Nomenclature E 8 0 0Drying Center Specifications Will Not Run Maytag Neptune Drying CenterWill not start or run Will Not Dry Gas ModelsSystem Check Mode Troubleshooting the Sensor-Dry circuitNoisy and/Or Vibration Rd**Read Sensor InputsDL****Accessing Diagnostic Codes Diagnostic CodesSensor Display Menu Sc***Upper and Lower Dryer Sub-system Check UtilitiesCode Description Trigger Action Taken Diagnostic Codes RS Reset to Factory Default ConditionsCancel the Read Sensor Display Function Enter The Diagnostic Utilities MenuCodes Visible To The Consumer CS******View Cycle StatisticsLocation Description Plug Number Pin Number Membrane Pad Continuity ChecksJ1A Name Relay Header Connections Connector DescriptionDoor Hook Removal Lower Door Reversal/RemovalShaker Removal Console Removal Logic Board Removal Front Access Panel RemovalDisassembly Procedures Tumbler Drum Removal Heater Assembly Removal Blower and Motor Removal Relay Board RemovalSteamer Blower Removal Water Valve RemovalSteamer Heater Removal Appendix a Maytag Appliances Company 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev Appendix B Maytag Appliances Company 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev 16022785 Rev