Kenwood KDC-7024/Y Service Manual

Also see for KDC-7024/Y: Service manual

Contents

KDC-7024/Y,722,80235Ref. No. Application/Function Operation/Condition/CompatibilityQ55, 56 Pre-out mute SW When a base gose Hi, Pre-out is muted.Q59, 60 Pre-out mute SW When a base gose Hi, Pre-out is muted.Q63 E2P 5V SW When Q63’base gose Lo, E2P 5V is out.Q102, 103 AM+B SW When Q102’base gose Hi, AM+B is out.Q104 Composite signal buffer for RDSCOMPONENTS DESCRIPTION SYSTEM MICROCOMPUTER : UPD703030GC015 (X25-966 : IC1)Pin No. Pin Name I/O Module Purpose / Description Truth table Processing Operation1 PLL_DATA I/O Tuner Data output/input with F/E.2 AM+B I/O Power supply AM+B. AM operation : H3 (FM+B) O Power supply FM+B (S01 F/E only). FM operation : H,Last FM : H (With RDS, RBDS model)4 V_ILL PAN_E2P DATA I/O To panel V-ILL D/A converter (V-ILL, LCD), E2PROM data.5 V_ILL PAN_E2P CLK I/O To panel V-ILL D/A converter (V-ILL, LCD), E2PROM clock.6 EVDD -7 EVSS -8 AFS O Tuner Noise detection time constant switching. FM seek, AF search : L, Receiving : H, Auto 0 : L9 BEEP O Audio Beep output.10 REMO I Extra Remote control input (Panel, External display).11 P_MUTE O Audio Power IC MUTE output. Power OFF : L, All OFF : L, TEL mute : L12 (SVR) O Audio Power IC SVR discharge circuit control. Power OFF momentary power dropped: H (5 second) and then LCD CD mechanism data line.13 IC2_SDA I/O Audio IC2 data line.Extra ROM correction data line.CD CD mechanism clock line.14 IC2_CLK I/O Audio IC2 clock line.Extra ROM correction clock line.15 P_STBY O Audio Power IC STBY output. Power IC ON : H, Power IC OFF : L, All OFF : H16 P_CON I/O Extra Power control. Power ON : H, Power OFF : Hi-Z, All OFF : Hi-Z17 DIMMER_CONT O To panel Dimmer control (W-LED only). Dimmer : Pulse control,Frequency : 1kHz, Normally : H18 TEST - Connect to GND.19 TYPE2 I Extra Destination select. wNC O Extra NC (MP3 mechanism model). w Output : L20 MUTE O Audio Mute output. ON : OPEN, OFF : L21 PRE_MUTEL O Audio PREOUT (L ch) mute. M MUTE L is L : L (CD), Momentary powerdropped : L, 2 zone, NAVI interrupt : Fixed H22 PRE_MUTER O Audio PREOUT (R ch) mute. M MUTE R is L : L (CD), Momentary powerdropped : L, 2 zone, NAVI interrupt : Fixed HMICROCOMPUTER’S TERMINAL DESCRIPTIONwww . xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299