Kenwood TK-860G Service Manual

Also see for TK-860G series: Instruction manual Instruction manual Service manual supplement Service manual Service manual

30TK-860G/(N)/862G/(N)SEMICONDUCTOR DATAShift Register : BU4094BCFV Terminal function (TX-RX unit IC510)Pin No. Port Name Function4 Q1 W/N Not used.5 Q2 MUTE MIC mute (M models only). Mute : H6 Q3 MBL MIC/LCD backlight control.Backlight on : H7 Q4 LED0 Red LED. LED lights : H11 Q8 BSHIFT Beat shift. Shift on : H12 Q7 AFREG2 Base band IC inter register select 2.13 Q6 AFREG1 Base band IC inter register select 1.14 Q5 LED1 Green LED. LED lights : HShift Register : BU4094BCF Terminal function (TX-RX unit IC9)Pin No. Port Name Function4 Q1 HNC Horn alert control. Horn alert on : H5 Q2 8RC 8R control. RX : H6 Q3 8TC 8T control. TX : H7 Q4 SPMUTE Speaker mute control. Mute on : H11 Q8 AUX6 Option board port 6 (AUX6). AUX on : H12 Q7 AUX5 Option board port 5 (AUX5).13 Q6 PA/LI PA/LIGHT control. PA/LIGHT on : H14 Q5 RX TX/RX VCO switch. RX : LLCD Driver : LC75833W(Display Unit IC801 : TK-862G only) Block diagramCommondriver Segment driver & latchClockgenerator Shift registerAddressdetectorCOM3COM2COM1S35S34S9S8/P8S2/P2S1/P1INHOSCVDDVLCDVLCD1VLCD2VSSDICLCE Terminal functionPin No. Name I/O Function1~8 S1/P1~S8/P8 O Segment output for displaying data9~35 S9~S35 transferred from serial data.36~38 COM1~COM3 O Common driver output. Framefrequency fo=(fosc/384)Hz39 VDD – Power supply for logic section(2.7V~6.0V).40 VLCD – Power supply for LCD driver section(2.7V~6.0V).41 VLCD1 I Apply 2/3 the LCD drive bias voltagefrom outside. If 1/2 the bias isapplied, connect to VLCD2.42 VCLD2 I Apply 1/3 the LCD drive bias voltagefrom outside. If 1/2 the bias isapplied, connect to VLCD1.43 VSS – GND.44 OSC I/O Oscillation terminal.45 INH I Force the display to turn off regardlessof internal data. Serial data can be inputregardless of whether it is "H" or "L".46 CE I Chip enable. Serial data transferterminal. Connected to themicroprocessor.47 CL I Synchronizing clock. Serial datatransfer terminal. Connected tothe microprocessor.48 DI I Transfer data. Serial data transferterminal. Connected to themicroprocessor.