Kenwood TS-950S Service Manual

Also see for TS-950S Digital: Instruction manual Instruction manual Instruction manual Instruction manual Service manual

PO-JQUO/OU44+ Functions of IC pins1) MAIN CPU : u.PD78C10G-36 (Digital unit IC1)CIRCUIT DESCRIPTIONPort name | Pin No. Name Function yo RemarksA port PAO 1 FOT Fluorescent display tube, LED display data °PAI 2 FCK Fluorescent display tube, LED display data cleok ie)PA2 3 FLE Fluorescent display tube, LED display data enable me)PAS 4 FBY | Fluorescent display tube, LED display data busy 1 | “L’: Busy, "H" : Sub CPU is ready to receive1 PA4 | 5 MRBK Main RF blanking © | “H" : BlankingPAS | 6 | SRBK | Sub RF blanking © $ “H": BlankingPAG 7 me Not used |PA7 8 i CSS Transmitreceive control signal | | "H": Reception, “L" : TransmissionBport |PBO~PB2 9~11 CO~C2 | External AYD (MB4056) channel data ie)PB3 12 cs External A/D chip select O | "L'': Chip selectPB4 13 CLK External A/D data clock ie)PB5,PB6} 14,15 - Not usedPB? 16 pie} External A/D data |C port PCO 17 TXD Personal computer interface transmit signal O | TTL levelj PCI 18 RXD | Personal computer interface receive signal it TTL levelPc2_s| 19 CTS Personal computer interface transmission enable signal i t | TTL levelPC3 20 - Not usedPC4 21 RTS Personal computer interface reception enable signal O | TTL levelPC5~PC7| 22~24 | Not usedAID ANT 41 = Not used :port ANG 40 VBT A/D channel 6, VBT input IANS 39 SLL | A/O channel 5, slope tune low-cut VR input tAN4 38 SLH A/D channel 4, slope tune high-cut VR input |AN3 37 RWM A/D channel 3, reflected wave voltage input (AN2 36 MET3 | A/D channel 2, ALC/Ic meter voltage input |AN1 35 MET1 AYD channel 1, Signal/RF meter voltage input IANO 34 PRM A/D channel 0, Processor meter voltage input iControl |PDO~PD7 | 55-62 |ADO~AD7| CPU address/data multiplex bus vOsignal PFO~PF7 | 47~54 A8~A15 | CPU high-order address bus omALE 46 ALE Address/data separation signal o |RO,WR 44,45 RD,WR_ {| Read/Write signal ie)NMI 25 NMI Nonmaskable interrupt | | Always "“H"M1,Mo 27,29 M1,MQ_| External memory mode | | Always "H"AVcc 43 AVec Power supply for A/O converter iAVREF 42 AVREF Reference power supply for A/D converter I | 5VAVss 33 AVss | Ground for A/D converterX1,X2 30,31 X1,X2 CPU clock crystal pin |RES 28 RES CPU reset signal I | "UL: ResetSTOP 63 STOP CPU stop signal t | Always "'H"2) Extended I/O : CXD10950Q (Digital unit IC6)[Port name | Pin No. Name Function Vo RemarksA port PAO 54 OK AT tune operation signal i | “H's in operationPAI 55 MNS AT manual/auto switch signal 1} "L': Auto, 'H" > ManualPA2 56 ATA AT ON (auto}/ OFF {through} switch signal I "L'OLON, “H" > OFFPAS 59 ATS _!|AT tune start switch signal EL MU": Stop, "H" : StartPA4 60 ULI Unlock signal 1 | ‘Lt: UnlockPAS 61 UL2 Unlock signal 2 }PAG 62 UL3 Unlock signal 3 |PA7 63 0B OSP installation signal | | “H"' : DSP installationFOR SERVICEMANUALSCONTACT:MAURITRON TECHNICAL SERVICESwww.mauritron.co.ukTEL: 01844-351694FAX: 01844-352554