Service
Manual Type Page
Edition 23
1
81
Fuse
1A/250 V
Fuse
1A/250 V Fuse
1A/250 V
X83
Coin meter
X82
Voltage supply
Microprocessor
1426
X84
Free wash
N
S
Interface
RS232 Connection for
buttons, front panel
Service switch
left = service
right = normal
X77
Valves
X76
Valves
X75
Drain
X78
Option X74
Motor relays X73
Clutch
X72
Door safety
lock
X71
Main voltage
to circuit
board relays
X70
Price
decrease
X80
Temperature
sensor
23. Timer
Description
The timer is electronic and consists of one circuit board. One half of the circuit
board contains microprocessors, program memory, temperature control, power
supply circuits, etc. The other half contains relays and interface suppression
circuits. The programmer has the following outputs and inputs:
• Outputs which, via relays, control the various machine functions, such as
motor, water valves and safety lock.
• Outputs which control the information that is to appear on the display window
mounted on the board’s other side.
• Inputs which detect which buttons are depressed on the front panel.
• Inputs which give information about the machine’s status from safety lock,
level sensor, temperature switch and coin meter, if there is one.
The programmer is controlled by the instructions stored in its program memory.
The program memory stores information about procedures, service program,
relay control, input detection, etc. In addition, the memory contains the machine’s
standard programs.
X79
Level detection
Program memory
X81
Out-of-balance
switch
9110
Fig.
1