Toro Multi Pro 1750 Service Manual page 334

Sonic Sensor LED Window
The sonic sensor includes a LED window that identifies
sensor status during Ultra Sonic Boom system opera-
tion (Fig. 19). To view the LED window, carefully remove
cover from sonic sensor. The LED window includes four
(4) LED's.
During normal operation, the green LED and both yellow
LED's should be illuminated. The red LED will be off.
If there is some interference with normal sensor opera-
tion, the red LED will be flashing. The green LED will be
off. The yellow LED's may flash, be illuminated or be off.
If the sensor programming plug is removed or is faulty,
the red LED will be illuminated. The green LED will be
off. The yellow LED's may flash, be illuminated or be off.
The status of the LED's on the sensors can be used to
identify a faulty or unplugged programming plug. The
LED's also can be used to identify the presence of inter-
ference that can affect Ultra Sonic Boom system opera-
tion. If the LED's do not illuminate correctly, a problem
may exist with circuit wiring to the sensor (see Chapter
10 − Electrical Drawings in this manual) or with the sen-
sor itself.
Ultra Sonic Boom Kit (Optional)
2
1
1. Sonic sensor
2. Programming plug
3. Letter T
1
1. Yellow LED
2. Green LED
Page 9 − 24
3
4
5
Figure 18
4. Plug arrow
5. Sensor notch
2
3
Figure 19
3. Red LED
4. Yellow LED
Multi Pro 1750
4