Chapter 7 Siren - Robotronics Vehicle Robot Operating Manual

The robot siren is operated by remote control from the Radio Control Transmitter. The siren
circuitry is located on the main circuit board. See the Main Circuit Board diagram, in the
Appendix, for the location of the siren volume, mode select and oscillation frequency adjust.
The volume of the siren is controlled by a trim pot on the main board. Turning the pot
clockwise will increase the volume of the siren. Turn the pot counterclockwise to decrease
volume. Three different sirens are available. Choose the siren you want by moving the jumper
located on the siren mode select. To control the oscillating speed, adjust the siren frequency
trim pot in the siren circuit. The siren mode select is set to the common siren for your robot. If
the siren mode select is changed, the siren frequency will very likely need to be adjusted.
NOTE:
The volume and oscillation are preset at the factory and do not need to be adjusted
unless you want a different volume level or oscillation speed.
Problem/Cause
Siren
No siren
1. Audio fuse blown
Siren volume not loud enough
1. Booster problem if tape and voice vol. also are not loud
enough.
2. Adjust siren volume if tape and voice okay.

CHAPTER 7 Siren

Siren Volume
Siren Frequency
Troubleshooting – Siren
Mouth Sensitivity
Siren mode select
Action
1. Replace fuse. See fuse block diagram.
1. Replace or have booster repaired.
2. See siren volume adjust on main board.
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