TM9300/TM9400 Installation Guide Installing the Radio 27© Tait Limited December 2015Removing theControl Head Notice During this procedure, take care that the control-head seal isnot damaged. Damage to this seal reduces environmental protection.On the underside of the radio, two lever points are indicated on the radiobody by a dot-dash-dot pattern ( ). The lever point is between thecontrol-head seal and the control head.1. At either of the lever points, insert a 3/16 inch (5 mm) flat-bladedscrewdriver between the control head and the control-head seal.2. Use the screwdriver to lift the control head off the snap feature, thenrepeat in the other position. The control head can now be removedfrom the radio body.4.4 Selecting the Mounting PositionRequirements forSafe andConvenientInstallationEnsure the mounting position complies with the following safety warnings:Warning Safe radio mounting!■ Mount the radio securely so that it will not break loose in theevent of a collision. An unsecured radio is dangerous to thevehicle occupants.■ Mount the radio and the microphone where they will notinterfere with the deployment of airbags, the vehicle operatorcontrols, the vehicle operator’s view.Caution The bottom surface of the radio and the heatsink fins canbecome hot during prolonged operation. When installing the radio,position the radio so that it is not possible for the radio user to touch thebottom surface of the radio and the heatsink fins.Gap BetweenRadio Bodyand MountingSurfaceNotice It may be necessary to mount the radio upside down to main-tain a gap of more than 3/8 inch (10 mm) between the bottom surface ofthe radio body and the mounting surface.Figure 4.2 Removing the control headlever pointindication oflever pointcontrol-headsealcontrol head