Kenwood TK-260G service manual TK-270GSCHEMATIC Diagram

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TK-270GSCHEMATIC DIAGRAM

Note) Component marked with a dot (•) are Parts of pattern 1.

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Contents Contents TK-260G/270GTK-260G/270G General / System SET-UPOperating Features Operation FeaturesDtmf keypad Programmable keys3 keys SP/MIC jacksIcon Description Display TK-270G onlyScan Operating TK-270G only Scan typesDetails of Features Option Signalling DTMF/2 tone For the panel Test Mode TK-270G only Operating Features / RealignmentHow to Enter Each Mode Audible user feedback tonesRealignment PC ModeFirmware Programming Mode ChecksumClone Mode FunctionChannel Setting Mode Self Programming Mode TK-270G onlySelf programming mode setting Flow ChartDelete DtmfTone ADDFunction Setting Mode Function Setting ModeYES Cttyes YES/NOTOT CttnoMemory Reset Mode Separating the case assembly from the chassis Disassembly for RepairSeparating the chassis from the unit TK-260G Circuit Description Frequency configurationReceiver PLL frequency synthesizer Transmitter System Power supplyEncode signaling Microphone amplifierControl Circuit Optional Board TerminalUPB1509GV IC301 Circuit DESCRIPTION/SEMICONDUCTOR DataLCD Driver LC75823W Display Unit IC501 TK-270G only Shift register 1BU4094BCFVIC5 Semiconductor DataMicroprocesser 30622M4102GP TX-RX Unit IC13 Shift register 2BU4094BCFVIC6Display Unit X54-3250-10 TK-270G Only Description of ComponentsTX-RX Unit Parts List TK-260G/270GTX-RX Unit Ceramic Trimmer CAP10P CN1 Coil R92 RK73GB1J100J VR1 Exploded View TK-260G Exploded View TK-270G TK-260G/270G PackingTest Equipment Required for Alignment AdjustmentRepair Jig Chassis Test mode operating features Test Mode TK-270G onlyRepair Jig Extention Flat cable part No E37-0851-05 Panel Tuning Mode LCD display Tuning mode Wide/Narrow indicatorTuning mode Common Section Transmitter SectionAF Vtvm Hpfoff Ptton Dtmf BPF-WAVE Adjustment points TX-RX unit X57-587 Component side view Foil Side ViewDisplay Unit X54-3250-10 Component Side View PC Board View TK-260G/270GDisplay Unit X54-3250-10 Foil Side View PC Board View DTA114EE TK-260G/270G PC Board View TK-260G TK-270GSCHEMATIC Diagram Block Diagram KNB-14 Level DiagramKNB-15A KMC-21 Speaker microphone KMC-21 Parts List KMC-17 Speaker microphone KMC-17 Parts ListOptions Specification General