97INSTALLING OPTIONSYou will require a Phillips screwdriver when installingthe optional units.REMOVING THE BOTTOM CASEWhen installing the optional DRU-3A or VS-3 unit,remove the bottom case first.1 Remove the 10 screws.2 Lift off the bottom case.DRU-3A DIGITAL RECORDING UNITSWITCH OFF THE POWER AND UNPLUG THE DC POWERCABLE BEFORE BEGINNING INSTALLATION.1 Remove the bottom case (10 screws).2 Locate the DRU-3A connector.3 Peel off the paper on the cushion attached to thePC board of the transceiver.4 Plug the DRU-3A into the DRU-3A connector ofthe PC board.5 Press the top of the DRU-3A to affix it to thecushion.DRU-3A6 Replace the bottom case (10 screws).Note: After the installation, you can adjust the DRU-3A playbackvolume by selecting Menu No. 14.VS-3 VOICE SYNTHESIZER UNITSWITCH OFF THE POWER AND UNPLUG THE DC POWERCABLE BEFORE BEGINNING INSTALLATION.1 Remove the bottom case (10 screws).2 Locate the VS-3 jack.3 Hold the VS-3 unit with the component side facingup, and insert the VS-3 connector into the VS-3jack.4 Replace the bottom case (10 screws).Note: After the installation, you can adjust the VS-3 playback volumeby selecting Menu No. 15.Cushion
