Marantz SR4000 Service Manual - Page 13

BLOCK DIAGRAM SR3000 +12V ECO5/ Tuner 95 CD Tuner control +12V 7501 ATT +12V 7503 CDR/TAPE ATT VCR ATT -12V TV ATT FRONT AV ATT CDR/Tape VCR LOGIC Record path 6CH/DVD Input -12V Source selctor control Front L/R ATT C/SUB ATT SL/SR ATT 4-1 +9V L DPL R DECODER C L/R SUB S DPL control VIDEO SELECTOR +5 DVD In 7803 VCR In TV In Front AV In Logic control +12 7801 7802 MONITOR OUT VCR OUT Video sel. control Outlet Mains o o +VH 6253 +VL 6252 6274 6275 7907/7908 1258 7257 7258 6276 -VL -12V -VH -30V F1 F2 6257 6261 6258/6259 6262/6263 0,33E 6260 6268 6265 6267 protection 2 7905 +12V +9V +5V +5Vp +5Vmute 6649 AMP STBY +V MFD 4-1 Sub C/Sub C/Sub +9V 7641 IN GAIN VOL BASS SPKR LOUD MID TREBLE ATT +5Vmute 7651/7652 7657 MUTE LOGIC CONTROL Sofac control SDA1 +12V 7621/7622 Headphone Mute 1424 7601 Headphone ON L R +VH 3301 7301 + - + - Left Right +9V 7642 IN GAIN VOL BASS SPKR LOUD MID TREBLE ATT LOGIC CONTROL +9V 7643 IN GAIN VOL BASS SPKR LOUD MID TREBLE ATT LOGIC CONTROL Tuner control only/N1B RDS DECODER 7404 RDS Info RDS Data/Clk Stereo/Clock/Data/CE Source selctor control SSCE SSCLK SSData DPL control Reset SCL/SDA Request Sofac control SDA1 SCL SDA2 Headphone sense +5Vmute 7653/7654 7658 MUTE Sofac control SDA1 +5Vmute 7655/7656 7658 MUTE Sofac control SDA2 +5Vp +5Vp 7415 Amp-ON C + - PTC hst 3328 7660-2 7662 Mute Subwoofer pre-out 1550 -12V Amp-ON +VL -VH SL Amp-ON 3901 + - 7901 Mute control Amp-ON Shift register 7412 SR CLK DATA protection 1 +5Vp 7405 Eeprom + - PTC hst 3915 -VL Center Surround Left Surround Right µP +5Vp 7409 Reset +5Vp 7403 IR Eye +5D RC5 7419/7421 Remote control 1541 protection1,2 Relay MFD 1421 Menu navigator 1422 Source selector encoder Key Matrix 1423 Volume control -30V 7414 Current buffer +5Vp -30V 7416/7417/7418 F1 Display F2 MDI 04-06-99