31PANEL DESCRIPTION1■ Programmable function keysThe following functions can be assigned to [UP], [DOWN],[P0], [P1], [P2], [P3] and [P4] programmable function keys.Consult your Icom dealer or system operator for details con-cerning your transceivers programming.If the programmable function names are bracketed in the fol-lowing explanations, the specific key is used to activate thefunction depends on the programming.INFORMATION:Depending on the presetting, the programmed function for[P0], [P1], [P2] or [P3] is assigned to [A], [B], [C] or [D]of the optional HM-152T, respectively. Ask your dealer fordetails.CH UP AND DOWN KEYS➥ Push to select an operating channel.➥ Push to select a transmit code channel after pushing [TXCode CH Select].➥ Push to select a DTMF channel after pushing [DTMF Au-todial].➥ Push to select a scan group after holding down [Scan AStart/Stop]/[Scan B Start/Stop] for 1 second.ZONE KEYPush this key, then select the desired zone using [CH Up]/[CH Down].What is “zone”?—The desired channels are assignedinto a zone according to the intended use for grouping.For example, ‘Staff A’ and ‘Staff B’ are assigned into a“Business” zone, and ‘John’ and ‘Cindy’ are assigned into a“Private” zone.ZONE UP AND DOWN KEYSPush to select an operating zone.SCAN KEY➥ Push to start and cancel scanning operation.• When Power ON Scan function is activated, push to pause thescanning operation. And the paused scan restarts after thespecified time period has passed.➥ Hold down this key for 1 second to indicate the scan list,then push [CH Up] or [CH Down] to select the desired list.