Technical information

Component Testing Procedures
!
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless
testing requires power.
December 2003 16022843 Rev 0
5
Control Board
EE
Connection
FF
Connection
BB
Connection
CC
Connection
DD
Connection
AA
Connection
Connection Pin and Description
AA Board Power Source & Relays CC Switches and Coin Sensor #1
AA1 3.8 VAC (AA1 to AA2) (7.6 VAC AA1 to AA5) CC1 --
AA2 Center Tap CC2 --
AA3 22.6 VAC (AA3 to AA4) CC3 Service Door Switch Sense
AA4 22.6 VAC (AA4 to AA3) CC4 Coin 1
AA5 3.8 VAC (AA5 to AA2) 7.6 VAC (AA1 to AA5) CC5 Coin1 Photodiode
AA6 20.7 VAC (AA6 to AA7) CC6 Vault Switch Sense
AA7 20.7 VAC (AA& to AA6)
AA8 Motor relay 24VDC (AA8 to AA9)
DD Coin Sensor #2
AA9 25VDC DD1 Coin 2 Photodiode
AA10 Reversing Relay 24 VDC DD2 --
DD3 Coin 2
BB Component Sensors & Line Voltage
DD4 --
BB1 25VDC (BB1 to EE4)
BB2 Cold Water Valve
EE Battery
BB3 Hot Water Valve EE1
+ 4.5VDC (EE1 to EE4)
BB4 -- EE2 --
BB5 120 Line / Pressure Switch EE3 --
BB6 Washer Motor Sense EE4
− Ground 4.5VDC (EE4 to EE1)
BB7 Lid Switch
BB8 120 Neutral
FF Coin and Vault Switch Sensor
BB9 -- FF1 --
BB10 -- FF2 25VDC
BB11 -- FF3 --
Note: Component side of the microprocessor board, the connector pins are read left to right (except the battery connector EE).