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 16022844 Rev 0
15
No response to
coin 1
Is display blank?
Is coin slide option
selected?
Timings for the coin
slide mode will cause
coins to not be
recognized. Deselect
the coin slide mode.
See blank display
section in trouble
shooting guide
Check the coin
mechanism for
proper adjustment.
Check wiring and
termination between first
coin drop and control
board
Unplug washer and check
resistance between the
red wire and the white
wire in connector
AA4. Is resistance
greater than 10K ohms?
Reconnect
connector and
plug in washer
If problem still
exists replace first
coin optic sensor
If problem still
exist replace
control board
No Yes
Yes No
Yes
Check lighting. Too
much ambient light in
the coin drop will cause
coins not to be
recognized.
No
Will not respond
to handheld PDA
Does PDA
respond to other
machines?
Check optic
window for
obstructions, dirt,
or scratches.
PDA has failed.
If problem still
exists replace
control board
Yes
No