Kenwood FM Transceiver TK-481 Service Manual

Also see for FM Transceiver TK-481: User manual Instruction manual Specifications Instruction manual Service manual

5TK-480/481OPERATING FEATURES System up/downWhen the key is pressed each time, the system numberto be selected is incremented/decremented and repeats ifheld for one second or longer. Telephone disconnectPressing this key ends an RIC connection (disconnectsthe telephone line). NoneSounds error operation beep, and no action will occur.Use this function when the transceiver is required to bemore simple operated.2-4. DisplayAlphanumeric displayThe twelve-character dot matrix alphanumeric displayshows the system and group numbers. You can programsystem and group names with up to ten characters inplace of these numbers. The left display is used as a de-lete indicator ( ) and the right is used for the selectivecall ( ) or scrambler ( _ ) function. The delete/add indica-tor shows the systems locked out of the scanning se-quence. Selective call and scrambler are optional func-tions that can be programmed.3. Scan Operating3-1. System scanSystem scan can be selected with the “Scan” key by pro-gramming the scan feature. When the “Scan” key ispressed and the “SCN”’ mark appears, scan mode in en-tered. Scanning starts from the system following the cur-rently displayed system. When a call is received, scanningstops, and the system and group are displayed.When the system knob or programming key is touchedduring scanning, the scan stops and the revert system orgroup can be changed. Scanning resumes one second afterthe key is released.System scan consists of the following 2 types. Fix system scanAll the set systems except locked-out ones are scanned.If the DEL/ADD feature is assigned to the programmablekey, it can be controlled from the front panel. List type system scanA scan list can be set for each system.The list to be scanned can be changed by changing thedisplay system.If many system have been set, the scan speed can beincreased by narrowing the systems to be scanned withscan lists.3-2. System lockoutThe system lockout feature is used to lock systems outof the scan sequence, and can be selected by programmingin the following two ways: Fixed lockoutThe system to be locked out is selected by programming.When a locked system is selected, the Delete ( ) indicatorappears on the left of the SYSTEM indicator. The revert sys-tem is scanned even if it is locked out. If there is a lockedsystem, the Delete ( ) indicator flashes during fixed scan-ning. User selectable lockoutIf the scan lockout feature is programmed to a key, theuser can lock systems out of the scan sequence with thekey. To lock a system out of the scan sequence, press thekey when the system is displayed. The Delete ( ) indicatoris displayed on the left of the SYSTEM indicator.Sub displayDisplays the system, channel and group numbers. Alsodisplays various functions, such as TA.P (Priority) indicatorThe P indicator ( ) appears when a selected channel isprogrammed as priority, in conventional operation.MON (Monitor) indicatorThe MON indicator appears when the button pro-grammed as MONITOR is pressed.SVC (Service) indicatorThis icon is not used on this transceiver.SCN (Scan) indicatorThe SCN indicator appears when using Scan mode.LO indicatorAppears when low power is selected.Handset indicatorThe handset indicator ( ) appears when the selectedgroup is programmed as telephone IDs.MAIL indicatorFlashes when a status message (FleetSync™) is re-ceived. Lights when a status message is stored in thestack memory.P9