Kenwood DVR-505 Service Manual

Also see for DVR-505: Instruction manual Instruction manual

Contents

DVR-505/70004CIRCUIT DESCRIPTIONPort No. Port Name I/O Description1 GRID2 O FIP GRID2 GRID1 O FIP GRID3 NC - CONNECTED TO VDD4 POWER DOWN I POWER DOWN CHECK5 RDS CLK I RDS CLOCK6 DVD RX I DVD UART INTERFACE (RX)7 RDS OPTION - NC (CONNECTED TO GND)8 RMC I REMOTE CONTROLLER SIGNAL9 RDS DATA I RDS DATA10 SM7346 CLK O VOLUME IC (IC84) CLOCK11 SM7346 DATA O VOLUME IC (IC84) DATA12 ENCODER UP I ENCODER (1) SIGNAL13 ENCODER DW I ENCODER (2) SIGNAL14 DVD TX O DVD UART INTERFACE (TX)15 DVD RST O DVD RESET16 DSP A. BOOST O DSP AUTO BOOT17 H/P CHK I HEADPHONE CHECK18 CS8415A-CE O DIR IC (IC14) CHIP ENABLE19 EMPHASIS O CS4228 DAC IC EMPHASIS ON/OFF20 TUNED I TUNED SIGNAL21 DSP INTREQ O DSP INT REQUEST22 4094CE O IC431 CHIP ENABLE23 CS49326 CE O CS49326 DSP IC (IC5) CHIP ENABLE24 CS4228 CE O CS4228 DAC IC (IC1) CHIP ENABLE25 DSP CLK O CS49326 DSP IC (IC5) CLOCK26 CS49326 DATA IN I CS49326 DSP IC (IC5) DATA27 DSP DA OUT O CS49326 DSP IC (IC5) DATA28 VREF I A/D REFERENCE (5V)29 PROTECT I AMP PROTECTION IN30 KEY IN I A/D KEY31 EEPROM DATA I/O EEPROM (IC502) DATA32 EEPROM CLK O EEPROM (IC502) CLOCK33 8415 DA IN I CS8415 DIR IC (IC14) DATA34 DVD OPTION I MODEL DISCRIMINATION35 PLL DATA IN I PLL DATA36 STEP OPTION I TUNER STEP OPTION37 VSS I AVSS (ANALOG GND)38 RST I RESET(LOW ACTIVE)39 EXTAL I X-TAL IN(10MHz)40 XTAL O X-TAL OUT(10MHz)41 GND - VSS (DIGITAL GND)42 NC O UNUSED43 GND - GND44 VDD I VDD (DIGITAL VDD)45 VFDP I VFDP (FIP PULL DOWN POWER -30V)46 STANDBY O STANDBY (POWER RELAY ON/OFF)47 SPK RELAY O SPEAKER RELAY ON/OFF48 SUB ON/OFF O SUB WOOFER GAIN CONTROL49 CS8415 RST O CS8415 (IC14) RESET50 PLL CE O PLL CHIP ENABLE51 PLL CLK O PLL CLOCK52 PLL D OUT O PLL DATA53 A CLK O COMMON CLOCK(LC7821,BU4094)54 A DATA O COMMON DATA(LC7821,BU4094)55~59 VIDEO (SW1~SW5) O VIDEO SW (1~5)1. Port Description of System Microcomputer : CXP828XX(IC501)