Kenwood TS-990S Service Manual

Also see for SP-990: Instruction manual

Contents

TS-990S215TERMINAL FUNCTIONPin No. Name I/O Function20 MFEN2 O Shift register enable signal 221 MFEN1 O Shift register enable signal 122 ATPWS O AT relay operation stops when power isON23 QSL O Shift register control24 GND - GNDCN470 (to Final unit A/2 CN53)1 GND - GND2 GND - GND3 THGND - GND for thermistor4 ODP I Over drive protection5 MRXC O Main RX control signal6 TXB O TX control signal7 ID1 I Power current signal8 FTH2 I Final thermistor input 29 FAN- I AT FAN power supply (-)10 FAN- I AT FAN power supply (-)11 NC - No connection12 FAN+ O AT FAN power supply (+)13 FAN+ O AT FAN power supply (+)14 VD I Drain voltage input terminal15 FFANP2 I AT FAN2 rotation pulse input16 FFANP1 I AT FAN1 rotation pulse input17 5M I AT coil selection18 QSL I Shift register control19 X45V2 I X45 version detection20 33S O 3.3V power supply output21 FTH1 I Final thermistor input 122 MFEN1 O Shift register enable signal 123 MFEN3 O DAC enable signal24 X45V1 I X45 version detection25 5A O 3.3V power supply output26 CLK O Shift register clock27 DATA O Shift register data28 GND - GNDCN500 (to AT (ANT SW) unit A/2 CN47)1 GND - GND2 GND - GND3 GND - GND4 -12V O -12V power supply output5 33S O 3.3V power supply output6 33S O 3.3V power supply output7 33S O 3.3V power supply output8 NC - No connection9 GND - GND10 GND - GNDPin No. Name I/O Function11 NC - No connection12 14S O 13.8V power supply output13 14S O 13.8V power supply output14 NC - No connection15 5A O 3.3V power supply output16 5A O 3.3V power supply output17 TXB O TX control signal18 GND - GND19 AMD I Amplitude detector input20 NC - No connection21 PHD I Phase detector input22 DATA O Shift register data23 VSF I Forward wave voltage detection24 CLK O Shift register clock25 VSR I Refl ected wave voltage detection26 AFEN O Shift register enable signalCN530 (to TX-RX unit A/2 CN3)1 5A O 3.3V power supply output2 NC - No connection3 GND - GND4 NC - No connection5 33S O 3.3V power supply output6 NC - No connection7 ID1 O Power current signal8 VSR O Refl ected wave voltage detection9 VSF O Forward wave voltage detection10 GND - GND11 NC - No connection12 TXB I TX control signal13 NC - No connection14 GND - GND15 NC - No connection16 NC - No connectionDC-DC (APP) unit (X43-3220-00 C/3)Pin No. Name I/O FunctionCN803 (to Digital unit CN3)1 GND - GND2 DC-12SW I 1.2V DC/DC converter control signal3 GND - GND4 NC - No connection5 GND - GND6 DC-18SW I 1.8V DC/DC converter control signal