Kenwood TK-780 Service Manual

Also see for TK-780 series: Programming instructions Instruction manual Service manual supplement Instruction manual Service manual

8TK-7802-3. Front Panel Displays and Indicators1 Sub displayDisplays the system, channel and group numbers. Alsodisplays various functions, such as TA.2 P (Priority) indicatorThe P indicator ( ) appears when a selected channel isprogrammed as priority.3 MON (Monitor) indicatorThe MON indicator appears when the button pro-grammed as MONITOR is pressed.4 SVC (Service) indictorThis icon is not used this transceiver.5 SCN (Scan) indicatorThe SCN indicator appears when using scan mode.6 AUX (Auxiliary) indicatorAppears when the auxiliary function is activated (ON) bypressing the AUX-A key.OPERATING FEATURES7 Handset indicatorThis icon is not used this transceiver.8 MAIL indicatorFlashes when a status message (5-tone or DMS) is re-ceived. Lights when a status message is stored in the stackmemory.9 Alphanumeric displayThe twelve-character dot matrix alphanumeric displayshows the system/group numbers. You can program sys-tem/group names with up to ten characters in place of thesenumbers. The left display is used as an add indicator ()and the right is used for the selective call ( *) or scrambler(_) function. The add indicator shows the channels unlockedout of the scanning sequence. Selective call and scramblerare optional functions that can be programmed.Dispalys received messages when using 5-tone or DMS.10 A,B,C,D keyThese keys are programmable function (PF) keys.MODULARMIC JACKCALLCALLDC SOURCEBUSY/TX LEDVOLUMEUPVOLUMEDOWNCHANNEL UPCHANNEL DOWN1 2 310 94 5 6 7 83. Scan Operating Scan types• Single group scanYou can scan all valid (ADD) channels in the displayedgroup that can be selected with the group up/down key.• Multiple group scanYou can scan all valid (ADD) channels in the all valid(ADD) group. SCAN start conditionOne or more non-priority channels must be added to allchannels that can be scanned. The transceiver must be innormal receive mode (PTT off).When you activate the key programmed to the scan func-tion, the scan starts. The scan icon “SCN” lights and “–SCAN–” or revert channel (programmable) is indicated onalphanumeric display. Scan stop conditionThe scan stops temporarily if the following conditions aresatisfied.1) A carrier is detected, then signalling matches on chan-nels for which receive the signalling is set by the pro-gramming software.2) A carrier is detected on the channels for which receivingsignalling is not set by the programming software orwhen the monitor (signalling cancel) function is activated.Fig. 1