Kenwood TS-950S Service Manual

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TS-9505/SD DESCRIPTION OF COMPONENTSFINAL UNIT (X45-3330-00)Components Use/Function Operation/Condition/CompatibilityQi Pre-drive amplifier HF wide range amplifier.Q2,3 Driver amplifier Pushpull wide range amplifier.04,5 Final amplifier : Pushpull wide range amplifier.a6 | Drive bias voltage supply iQ7 Final bias voltage supplyO8~10 AVR Final +48V.Q11~13 Switching Fand motor controlQ14,15 Switching i Transmission stop when irregular voltage of 50V.A Sea eonqT tei) i) AFpinaogee el asRae2 atmann +ookDi Temperature compensation Pre-driver temperature detection.D2 Temperature compensation Drive temperature detection.03 Temperature compensation ; Final temperature detection.D4 | 18V voltage detection05,6 Reverse current prevention07 Switching Transmission stop when irregular voltage of 50V.D8 AVR 50V AVR reference voltage09 Surge absorption For fan motor.D10 AVR Voltage drop protection when $1 switch turned on.DIGITAL UNIT (X46-3050-XX) -11: K.P -21:M_ -61:W_ -62:W2 -71:XComponents Use/Function Operation/Condition/CampatibilityIC1 CPU 8 bit micorprocessor.{C2 ROM 32Kx 8 bit.IC3 RAM 8K x 8 bit.Ic4 Address latch | Multiplexer address/address latch of data output.Ic5 Address decoder Convert address signal into each IC chip select signal.1CB + 1/0 port Bbitx 4, 4 bitx 1,IC7 i 1/0 port B bit x 6,IC8 {/O port 8 bit x 4, 4 bit x 1.Ica Encoder gate array MAIN, CLICK count of the encoder.{C10 Encoder gate array SUB, RIT/XIT count of the encoder.IC11 Butfer D/A converter output. —2.6 1?z }1C12 Inverter Encoder shape wave circuit.1C13 A/D converter 8 bit, 8 channel.