Kenwood TS-990S Service Manual

Also see for SP-990: Instruction manual

Contents

TS-990S223TERMINAL FUNCTIONPin No. Name I/O Function4 UL I Unlock detect H: Lock5 RPEN O Reference PLL enable (IC18)6 MLDT O Main local data output7 MLCK O Main local clock output8 REFO O Reference output selectH: Reference output9 ERDET I External reference detectH: External input10 RDEN O Reference DDS (IC13) enable11 MPEN1 O Main PLL1 (IC2) enable12 MLSEN O Main local shift register (IC15/IC16) en-able13 MLRST O DDS1 (IC3) reset14 MDEN1 O DDS1 (IC13) enable15 MDIO O DDS1 (IC13) I/O update16 MPEN2 O PLL2 (IC17) enable17 GND - GND18 X50V1 I Version detection signalH: ver.1, L: ver.219 NC - No connection20 NC - No connection21 NC - No connection22 NC - No connectionCN47 (to PLL (SUB) unit CN1)1 GND - GND2 SLSEN O Local shift register (IC5/IC6) enable3 SPEN3 O PLL3 (IC1) enable4 SPEN2 O PLL2 (IC16) enable5 SPEN1 O PLL1 (IC10) enable6 SDEN3 O DDS3 (IC11) enable7 SDEN2 O DDS2 (IC12) enable8 SDIO O DDS1 (IC14) I/O update9 SDEN1 O DDS1 (IC14) enable10 MLRST O DDS1 (IC14) reset11 UL I Unlock detect12 SLCK O Sub local clock output13 SLDT O Sub local data output14 GND - GND15 X50V2 I Version detection signalH: ver.1, L: ver.216 NC - No connectionCN65 (to Display (MAIN PANEL) unit A/6 CN263)1 LTIMER O Timer LED control2 LPOFF O Standby LED control3 PRST O Panel MCU reset signal4 DOT I Electronic keyer dot signal L: KEY dot5 DASH I Electronic keyer dash signalPin No. Name I/O Function6 KYSR I KEY jack judgement signal L: Plugged7 PWS I Power switch signal8 SS I Standby switch L: TX9 BKC O Reduced voltage detection interruptL: Reduced voltage10 PTXD O Serial data output to panel MCU11 PRXD I Serial data input from panel MCU12 PRTS O RTS signal output to panel MCU13 PCTS I RTS signal input from panel MCU14 EXTPF1 O External PF1 signal output15 EXTPF2 O External PF2 signal output16 MBLEN O Main bucklight enable17 PARXD I Serial data input from panel MCU to ap-plication MCU18 PATXD O Serial data output to panel MCU from ap-plication MCU19 NC - No connection20 33B O 3.3V regulator output21 NC - No connection22 NC - No connection23 NC - No connection24 5D O 5V (DC/DC)25 NC - No connection26 GND - GND27 GND - GND28 NC - No connection29 8A O 8V (DC/DC)30 NC - No connection31 NC - No connection32 PFPRG I/O Programming mode requestL: Programming modeCN70 (to DC-DC unit A/3 CN230)1 PHD I Output voltage of phase detector2 AMD I Output voltage of amplitude detector3 TT I/O External antenna tuner in/through control4 TS I/O External antenna tuner tuning start con-trol5 ATPWS O AT relay operation stops when power isON6 AFEN OShift register (IC800) enable signal forANT connector unit and shift register (IC8)for ANT switch unit7 MFEN3 O D/A converter (IC1) enable signal for fi nalunit8 MFEN2 O Shift register (IC300,IC320) enable signalfor ANT tuner unit9 MFEN1 OShift register (IC6, IC7) enable signal forfi nal unit and shift register (IC340) forANT tuner unit