Kenwood TK-270G, TK-260G Adjustment points TX-RX unit X57-587 Component side view, Foil Side View

Page 40

TK-260G/270G

ADJUSTMENT

Adjustment points TX-RX unit (X57-587) Component side view

ANT

LV

VR1

C13 CN3

IC12

MIC IC14

BPF

MIC SP

Foil Side View

	MIC	SP
BPF
		L307
Battery terminal	L305	L306
	L305	L306

TC1

ANT

CV TC2

VR1 : Frequency adjustment	TC1 : Transmit lock voltage adjustment
	TC2 : Receive lock voltage adjustment
	L305:	} Band-pass filter waveform adjustment
	L307:L306:

BPF : Band-pass filter test point

CV(LV) : Lock voltage adjustment terminal.

Fig. 2 Adjustment points

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Image 40

Contents Contents TK-260G/270GTK-260G/270G General / System SET-UPOperating Features Operation FeaturesProgrammable keys 3 keysDtmf keypad SP/MIC jacksDisplay TK-270G only Scan Operating TK-270G onlyIcon Description Scan typesDetails of Features Option Signalling DTMF/2 tone Operating Features / Realignment How to Enter Each ModeFor the panel Test Mode TK-270G only Audible user feedback tonesPC Mode Firmware Programming ModeRealignment ChecksumClone Mode FunctionSelf Programming Mode TK-270G only Self programming mode settingChannel Setting Mode Flow ChartDtmf ToneDelete ADDFunction Setting Mode Function Setting ModeYES/NO TOTYES Cttyes 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 Power supply Encode signalingTransmitter System Microphone amplifierControl Circuit Optional Board TerminalUPB1509GV IC301 Circuit DESCRIPTION/SEMICONDUCTOR DataLCD Driver LC75823W Display Unit IC501 TK-270G only Semiconductor Data Microprocesser 30622M4102GP TX-RX Unit IC13Shift register 1BU4094BCFVIC5 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