Control Board - Maytag MAT12PDSA Technical Information

Component Testing Procedures
To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless
testing requires power.

Control Board

AA2
AA5
Connector- Wire Color
Pin
Service and Vault Switch
AA1-1 Black
AA1-2 Yellow
AA1-3 Orange
AA2-1 --
AA2-2 --
AA2-3 --
AA2-4 --
AA2-5 Purple
AA2-6 --
AA2-7 --
AA2-8 --
AA2-9 --
AA2-10 Pink
Debit Card Connections
AA3-1 --
AA3-2 --
AA3-3 --
AA3-4 --
AA3-5 --
AA3-6 --
Coin Sensor #1
AA4-1 Blue
AA4-2 Red
AA4-3 White
AA4-4 White/Blue
December 2003
!
AA1 EE1
Description
Vault Switch
Service switch
Common (AA1-1 to AA1-2)
Relays
--
--
--
--
24 VDC Reversing Relay
--
--
--
--
Power for off board relay
Available 2
Available 1
Enable 1
Enable 2
Debit Power
Debit Ground
Anode coin #1 L.E.D.
Collector Photo transistor
Emitter Photo transistor
Cathode L.E.D.
WARNING
AA4 AA6 AA3
Connector-
Pin
AA5-1
AA5-2
AA5-3
AA5-4
AA6-1
AA6-2
AA6-3
AA6-4
AA6-5
AA6-6
AA7-1
AA7-2
AA7-3
AA7-4
AA7-5
AA7-6
AA7-7
AA7-8
EE1-1
EE1-2
EE1-3
EE1-4
5
AA7
Wire Color Description
Coin Sensor #2
Blue Anode coin #1 L.E.D.
Red Collector Photo transistor
White Emitter Photo transistor
White/Blue Cathode L.E.D.
Board Power Source
-- Center Tap
-- 5.3 VAC (AA6-2 to AA6-5)
-- 22.5 VAC (AA6-3 to AA6-6)
-- --
-- 5.3 VAC (AA6-5 to AA6-2)
-- 22.5 VAC (AA6-6 to AA6-3)
--
Power and Main Components
-- --
Grey #20 120 Line/ Lid Switch
Orange Hot Water Valve Coil
Brown #15 Pressure Switch
Red 120 Neutral
Black Motor Sense
Purple 24 VDC Motor Relay1
Blue Cold Water Valve Coil
Battery
+
Positive Side
--
--
− Negative Side
16022846 Rev 0