Kenwood KRF-V7030D-S Service Manual

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KRF-V7030D/V8030D/VR-407/4094CIRCUIT DESCRIPTION(0 : Pull down, 1 : Pull up)TYPE BAND ReceptionfrequencyChannel IF PLL standard Diodespace frequency DSW3 DSW2 DSW1 DSW0K1 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 0 0 0 01700 AM 530kHz~1700kHz 10kHz +450kHz 10kHzK2 FM 87.5MHz~108.0MHz 100kHz +10.7MHz 25kHz 0 0 0 11610 AM 530kHz~1610kHz 10kHz +450kHz 10kHzE1 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHz 0 0 1 1AM 531kHz~1602kHz 9kHz +450kHz 9kHzE3 FM 87.5MHz~108.0MHz 50kHz +10.7MHz 25kHzRDS AM 531kHz~1602kHz 9kHz +450kHz 9kHz 0 1 0 1M K2/E1 is switched with only the setting of DSW1 0 0 X 1(DSW1 = 0 : K2 type, 1 : E1 type)This unit works backup by microprocessor if power is off. Themicroprocessor carries out the power-off-checking by 1ms. Itsets up the initialized data if the backup data is destroyed.Also plug in and out the power cord from the outlet withpressing the power switch for initialization.1. Backuped DataA) AmpPower on/offSelectorDevice presetVideo outputSpeaker A relay on/offSpeaker B relay on/offVolume levelBass, Treble levelInput level(every inputs)Subwoofer yes/noDimmer levelMonitor no/offMD/TAPE modeVideo2/Monitor modeb)Surround functionListen mode(input:analog/PCM only)Speaker setupDistance(how far)Left, Right, Center levelSurround levelSubwoofer levelInput mode(CD,Video2/3)Midnight on/off(CD,Video2,3)C)TunerBandPreset channelsReceiving frequencyAuto/manual2. Condition by the destination or model3. Main microprocessor: X14,IC1(MN101C35DRA)3-1 Microprocessor periphery block diagram/SD, /STEREO, CH. SPACES. LEVELTUNER LC72131PLL. DO, PLL. DT, PLL. CK,PLL. CEPROTECTIONTHERMAL. SENS, PROTECTION1PROTECTION2A/D KEYAD. KEY1, AD. KEY2ENCODERVOL. ENC. A, VOL. ENC. B,SEL. ENC. A, SEL. ENC. BMN101C35DRA8MHzOSCX1POWER. RLY, SPA. RLY, SPB. RLYCENTER. RLY, SURR. RLY,LIMITER, PACK. CONTRELAYSTANDBY. LED, DTS. LED,DOL. DIG. LED, PROL. LED,3STEREO. LED,CS. LED(DOWNMIX. LED)LEDFL11-MT-120GKX14, ED1REMOCONX07, IC202X07, IC201X14, IC1X07, IC106, 109/X08,IC12,14SEL. DT, SEL. CLK, SEL. ST1,SEL. ST2NJU7313AM, NJU7311AMX08, IC51DSP. INTREQ, DSP. CDIN,DSP. CDOUT, DSP. CCLK,DSP. CS, DSP. PDCS493263 or CS493253X08, IC2AK4527CODEC. CDIN, CODEC. CDOUT,CODEC. CCLK, CODEC. CS,CODEC. PD, CODEC. DZF1X08, IC5DIR. CDIN, DIR. CDOUT, DIR.CCLK, DIR. PD, DIR. ERRAK4110MUTE/A. MUTE, /PRE. OUT. MUTE/T. MUTE, /20dB. ATTSERIALS. DATA, S. BUSYX08, IC15M62446FPVOLDT, VOL. CLK, VOL. STX14, IC4BU1923FRDS. CLK, RDS. DATAwww . xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299