Troubleshooting - Toro 41086 Operator's Manual

Troubleshooting

Note: If the console computer malfunctions or needs repair, you can resume spraying in manual mode by unplugging
the cables form the rear of the console computer. You can then control the system using the center console controls.
Problem
No display lights with the power on
All keyboard lights are on at the same time
You cannot enter a digit using the keyboard
An indicator on a key does not illuminate
The console computer displays a flashing
Cal whenever you start the engine
The console computer displays a flashing
Cal whenever you turn the master switch
to the On or Off position
The console computer displays a flashing
Cal whenever you change the speed
One display digit has one or more missing
segments
The speed display reads 0
The speed is inaccurate or unstable
The rate reads 0000
Possible Cause
1. The fuse on the back of the console
computer is blown.
2. The battery connections are loose.
3. The power switch is not operating
properly.
4. There is a problem with the processor
board assembly.
1. There is a problem with the face plate
sub assembly.
1. There is a problem with the face plate
sub assembly.
1. There is a problem with the face plate
sub assembly.
1. The battery connections are loose.
2. The battery is not providing sufficient
voltage.
1. The battery connections are loose.
2. The battery is not providing sufficient
voltage.
1. The battery connections are loose.
2. The battery is not providing sufficient
voltage.
1. There is a problem with the LCD
display board assembly.
1. The pins on the speed sensor cable
connector and the plug on the back of
the console computer are loose.
2. The pins and the sockets on the speed
sensor cable are dirty.
3. There is a problem with the speed
sensor switch assembly.
1. The wheel drive setting is not set to
SP3.
2. The Speed Cal number is incorrect.
1. The Speed Cal is zero.
2. The wheel drive setting is not set to
SP3.
3. The Total Volume is not registering the
flow.
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Corrective Action
1. Replace the fuse.
2. Secure the battery connections.
3. Repair or replace the power switch.
4. Have an Authorized Distributor replace
the processor board assembly.
1. Have an Authorized Distributor replace
the face plate sub assembly.
1. Have an Authorized Distributor replace
the face plate sub assembly.
1. Have an Authorized Distributor replace
the face plate sub assembly.
1. Secure the battery connections.
2. Check the battery voltage.
1. Secure the battery connections.
2. Check the battery voltage.
1. Secure the battery connections.
2. Check the battery voltage.
1. Have an Authorized Distributor replace
the LCD display board assembly.
1. Have an Authorized Distributor repair
or replace the connector or the plug on
the back of the console computer.
2. Clean the pins and sockets on the
speed sensor cable connectors.
3. Have an Authorized Distributor replace
the speed sensor switch assembly.
1. Set the wheel drive setting to SP3.
2. Enter the correct Speed Cal number.
1. Enter the correct Speed Cal number.
2. Set the wheel drive setting to SP3.
3. Ensure that the flowmeter is pointing
in the direction of flow and is operating
properly.