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©2003 Maytag Appliances Company 16022785 Rev. 0 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
Number
Description Voltage Comment/
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
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
J3
8 Upper exhaust air thermistor 5 VDC
1 L1 to upper door switch 120 VAC
2 Upper door switch to Lamp 120 VAC
J4
3 Chassis ground to logic board Ground
1 12 VDC power 12 VDC
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
coil
12 VDC
10 To lower heater cycling relay coil 12 VDC
11 To lower heater center-tap relay
coil
12 VDC
J6A
12 To lower dryer motor relay coil 12 VDC
DC connections to Power &
Relay Board.
1 VCC from logic board 5 VDC
2 Serial transmit signal 5 VDC
3 Serial receive signal 5 VDC
J10
4 Serial signal common DC GND
1 DC common DC GND
2 Reset Signal 5 VDC
3 Serial transmit signal for logic
board
5 VDC
4 VCC from logic board 5 VDC
5 Serial receive signal for logic
board
5 VDC
J10A
6 VPP from programmer box
1 L1 for use on logic board 120 VAC
2 Upper door switch power to lamp 120 VAC
3 Lower door switch signal 120 VAC
4 Gas igniter sense signal 120 VAC
J11A
5 Neutral for switched 120 VAC
signals
120 VACN
120 VAC connections to power &
relay board.