Sony STR-DB1070 Service Manual - Page 23

5-10. SCHEMATIC DIAGRAM - VIDEO Board - • See page 38 for Waveforms. • See page 38 for IC Block Diagrams. STR-DB870/DB1070 CN306 4P C318 1 50V C315 470 10V C314 470 10V (DB1070) R320 1k R321 1k R322 1k R329 10 R330 10 R333 4.7k VIDEO BUFFER IC305 BA7622F VCC COUT VOUT YOUT CIN VIN YIN GND C325 33p CT303 20p C326 18p C328 0.1 L301 22µH OSD DRIVER R331 1k C330 10 50V C331 10 50V C329 100p IC307 MB90089F- G-238-BND EXD XD VOB VOC2 VOC1 VOC0 TEST SCLK SIN CS VOUT COUT YOUT AVSS VSS EXVSYN EXHSYN VSYNC HSYNC XS EXS VCC VBLK FSCO AVCC VIN CIN YIN C319 0.1 CT302 20p C322 10p (DB1070:US,CND) JW301 DB1070:AEP, UK,E,CH C316 CT301 10p 20p X301 17.34MHz R317 1M R319 330 C320 27p C323 27p X302 14MHz R327 330 R324 1M (DB1070:US,CND) R334 100 1 3 2 FL305 Q305 R347 2SC2785 3.9k BUFFER Q304 2SC2785 BUFFER R349 1.2k C339 0.1 C340 2200 10V C341 0.1 R343 47k R345 47k D301 1SS133T R348 47k C355 10 50V R350 47k C333 0.1 (DB1070:AEP,UK,E,CH) C332 R335 1 0.1 75 2 FL303 3 R336 75 FL304 1 3 2 CLOCK IC304 74HCU04 R328 100 FL302 1 3 2 C324 0.1 COMPARATOR IC306 74HC00 R332 100 R318 75 2 3 1 FL301 R323 75 (DB1070:AEP,UK,E,CH) J303 CONTROL A1 II (CHASSIS) E4 J302 1P MONITOR OUT VIDEO TV/SAT IN VIDEO J305 3P DVD/LD IN VIDEO VIDEO 2 OUT VIDEO IN VIDEO VIDEO 1 OUT VIDEO IN VIDEO J304 3P E5 E6 (CHASSIS) E7 (CHASSIS) (CHASSIS) C350 0.1 C354 0.1 C335 47p R342 75 R338 75 C342 47p R339 75 C343 47p C336 47p R340 75 C344 47p C337 47p R341 75 C345 47p C351 2200p C352 2200p C353 2200p C346 10 50V C347 10 50V R344 75 C2 C348 10 50V C1 R346 75 C4 C3 C349 10 50V C375 10 50V FB303 VCC VSYNC GND HSYNC IN VCC VSYNC GND HSYNC IN SYNC SEPARATE IC309 LA7213 SYNC SEPARATE IC311 LA7213 C359 0.1 C361 1000 6.3V R353 150k R352 330 C368 1 50V C370 0.1 C372 1000 6.3V R356 150k C366 10 50V C362 10 50V C376 1 50V R355 330 DB1070:AEP, UK,E,CH (DB870) JW305 C363 10 50V SW4 SW1 SW2 C374 0.1 A3 A1 LEVEL SHIFT IC310 74ACT08 C377 0.1 C367 0.1 C360 0.1 D304 1SS133T VIDEO SELECT IC308 NJM-2296M- LEVEL SHIFT IC312 74ACT08 C4 C3 C2 C1 D303 1SS133T C358 0.1 C301 E2 470 10V E3 R326 330 C302 470 10V R337 330 C304 33p C313 10 50V R359 330 R354 330 C307 33p R358 22k C379 0.1 LINE AMP IC301 OPA2652 VCC VSS LINE AMP IC302 OPA2652 VCC VSS C382 0.1 C305 C303 33p E1 470 10V R313 330 R315 330 R316 22k R314 22k D4 D2 D3 D1 C309 10 50V C312 10 50V C308 10 50V C311 10 50V SW3 C381 0.1 * CN301 19P (US,CND) 14P (DB1070:AEP,UK,E,CH) 10P (DB870:AEP,UK) (US,CND) CN301 * B1 MBUS-STATUS-OUT B2 MBUS-TV A2 B3 MBUS-DVD B4 MBUS-V1 DB870:CND B5 /DB1070 SIRCS OUT A4 MONITOR-Y/OUT MONITOR-C/OUT MONITOR-Y/IN MONITOR-C/IN SW4 SW3 SW2 SW1 VIDEO3 SW4 SW3 SW2 SW1 GND GND +5V -5V +5V(BACK UP) R351 75 C369 47p A4 A3 A2 C373 0.1 A1 C365 0.1 C364 0.1 C378 0.1 C380 0.1 R357 100 DB870:CND /DB1070 (US,CND) CN303 * B1 MBUS_OUT B2 MBUS_TV B3 MBUS_DVD B4 MBUS_V1 B5 SIRCS +5V(B_UP) OSD_DATA OSD_CS OSD_CLK V-SYNC P/N GND_A1 CTRL A1 V_SW1 V_SW2 V SW3 V SW4 -5V +5V * CN303 21P (US,CND) 15P (DB1070:AEP,UK,E,CH) 11P (DB870:AEP,UK) GND GND C310 10 50V GND GND CN302 2P R305 75 VIDEO SELECT IC303 TC74HC4053AF D1 R307 75 D2 R310 75 R304 75 R325 10k D3 R306 75 D4 R309 75 S-VIDEO BOARD CN751 (Page 25) (Page 15) J301 9P Y PBB-Y PRR-Y DVD/LD IN (US,CND) Y PBB-Y PRR-Y TV/SAT IN COMPONENT VIDEO Q302 BA1A4M INVERTER R301 75 E1 R308 1k E2 R302 75 R311 1k E3 R303 75 R312 1k Y PBB-Y PRR-Y MONITOR OUT 23 23