Maytag MAT12PDSA Technical Information page 16

Component Testing Procedures
To avoid risk of electrical shock, personal injury or death; disconnect power to washer before servicing, unless
testing requires power.
No response to
coin 2
Will not keep
time of day
during power
interruptions
16022846 Rev 0
!
WARNING
Is display blank?
Yes
See blank display
section in trouble
shooting guide
Check lighting. Too
much ambient light in
the coin drop will cause
coins not to be
recognized.
If problem still
exists replace
second coin optic
sensor
Is a battery
Yes
installed?
No
A battery must be
installed in order to keep
time of day during power
interruptions.
Check the coin
No mechanism for
proper adjustment.
Check wiring and
termination between
second coin drop and
control board
Unplug washer and check
resistance between the
red wire and the white
No
wire in connector
AA4. Is resistance
greater than 10K ohms?
Does greater than 3.4 VDC
appear between the red and
black wires of the battery?
Yes
Check battery
connector and
terminations
If problem still
exists replace
control board
16
Reconnect
Yes connector and
plug in washer
If problem still
exist replace
control board
No Replace battery
December 2003