Kenwood TKR-850 Service Manual

Also see for TKR-850: Brochure & specs Function reference Instruction manual Instruction manual Programming reference

TKR-85047Connector Terminal Terminal I/O Terminal functionNo. No. Name10 EPR I Enable input for RX PLL11 EPT I Enable input for TX PLL12 LDR O Lock detector for RX PLL13 LDT O Lock detector for TX PLL14 DT I Data input15 CK I Clock input16 STB I Strobe input for shift register17 FWD O RF power down signal output18 LD2 I Latch data input for DA converter19 BUP O Backup signal output20 PSW I Power switch input21 TMP O High temperature detector signaloutput for fan action22 SOE I Output enable for shift register23 GND – Ground24 MB I Modulation signal input for VCXO25 MO I Modulation signal input for VCO26 GND – Ground27 GND – Ground28 QS I Data29 NC – No connection30 SB O Power supply output after power switch31 SB O Power supply output after power switch32 SB O Power supply output after power switch33 SB O Power supply output after power switch34 NC – No connection35 8C O Common 8V output36 8C O Common 8V outputCN15 1 E – Earth2 B I Power supply input3 B I Power supply inputCN16 1 GND – Ground2 NC – No connectionTo X45 3 8T O 8V output during transmissionfinal 4 PC O TX power control signal outputunit 5 FAS O Fan control signal output6 PDT I RF power down signal input7 BUP I Main DC/BACKUP status input8 TMP I High temperature detector signalinput for fan actionCN18 1 RX IN I Receive signal input (Coaxial)CN19 1 DO O Transmission signal output (Coaxial)TX-RX Unit (X57-696X-XX) (B/2) : Control SectionConnector Terminal Terminal I/O Terminal functionNo. No. NameCN600 1 SB O Power supply output after power switchTo X54 2 SB O Power supply output after power switch(B/2) 3 GND – GroundConnector Terminal Terminal I/O Terminal functionNo. No. Name4 NC – No Connectiondisplay 5 DAT O Serial data outputunit 6 PSW I Power switch input7 STB1 O Strobe data for shift register8 CLK O Clock data output9 SOE O Output enable for shift register10 TXD1 I/O PTT input/TXD output11 K1 I KEY input 112 RXD1 I Hook detection input/RXD input13 K2 I KEY input 214 K3 I KEY input 315 K4 O KEY output 416 K5 O KEY output 517 VLI I Volume control input for AF signal.18 5C O Common 5V output19 MIG – Mic ground20 MIC I MIC signal inputCN601 1 TXO O MIC signal output to the board2 TXI I MIC signal input from the boardTo 3 RXO O RX audio signal output to the boardoptional 4 AC O Audio control signal outputboard 5 BC1 O Scramble code output.6 BC2 O Scramble code output.7 BC3 O Scramble code output.8 BC4 O Scramble code output.9 PTI I PTT signal input10 CLRC O Clear code for scramble11 RXI I RX audio signal input from the board12 PTO O PTT signal output13 NC O No connection14 GND – GroundCN602 1 8C I Common 8V input2 8C I Common 8V inputTo X57 3 NC – No connection(A/2) 4 SB I Power supply input after power switchTX-RX 5 SB I Power supply input after power switchunit 6 SB I Power supply input after power switch7 SB I Power supply input after power switch8 NC – No connection9 QS O Data10 GND – Ground11 GND – Ground12 MO O Modulation signal output for VCO13 MB O Modulation signal output for VCXO14 GND – Ground15 SOE O Output enable for shift register16 TMP I High temperature detector signal input17 PSW O Power switch output18 BUP I Backup signal inputTERMINAL FUNCTION