Sony HCD-C990 Service Manual - Page 56
Schematic, Diagram, Amp
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HCD-C770/C990 7-25. SCHEMATIC DIAGRAM - AMP Section (1/2) - • See page 71 for Waveforms. • See page 76 for IC Block Diagrams. (Page 70) M301 (FAN) CN300 5P 32V 32V PGND PGND 12V CN302 2P PGND 12V (Page 52) CN301 12P 6.5V 6.5V DGND DGND D1 D2 D3 BCKO LRCKO DGND SCK DGND (1/2) C300 2200 35V R396 180 R397 180 R395 180 C309 0.1 +5V REGULATOR IC302 BA05FP-E2 I O G C310 0.01 C320 100 10V +3.3V REGULATOR IC303 BA033FP-E2 I O G C323 0.01 Q190 2SB1013 R398 R399 47k 4.7k Q191 DTC124EKA Q190,191 FAN MOTOR CONTROL C324 0.01 C325 100 10V R309 1.0k R310 1.0k R311 1.0k R312 1.0k R313 1.0k C329 220 10V C330 0.01 R308 1.0k FB307 D2 BCKO LRCKO C336 100 10V C352 0.01 INIT PGMUTE NSMUTE SCDT SHIFT LAT2 C348 0.01 R315 100 R316 100 R317 100 R318 100 R319 100 R322 47 D1 D2 D3 BCKO LRCKO SCK SCK C373 0.01 STREAM PROCESSOR IC308 CXD9634Q FB308 C349 0.01 C350 100 10V R321 100 C355 0.1 C368 0.1 R330 100 R333 100 C372 0.1 C378 0.1 R335 100 (Page 59) R AUDIO BOARD CN204 (Page 52) PIN301 1P CN305 17P INIT PGMUTE NSMUTE DGND SCDT SHIFT DGND LAT1 LAT2 LAT3 DGND EN DIAG HPSW DGND RELAY HPMUTE R334 470 INIT R336 470 PGMUTE R338 0 NSMUTE R339 100 R340 100 SCDT SHIFT R341 100 R342 100 R344 100 LAT1 LAT2 LAT3 R346 0 R347 0 EN DIAG J900 PHONES C904 0.1 R902 68 L901 33µH R903 4.7k Q900 DTC343TK MUTING C991 0.01 C902 0.01 C903 0.01 R900 4.7k L900 33µH Q901 DTC343TK MUTING C992 R901 0.01 68 L903 FB803 FB805 FB804 L902 CN900 5P HP.L-CH GND HP.R-CH HP-MUTE HP-SW D180 RB411D D181 MA111-TX C390 0.01 C391 0.01 R191 15k Q192 DTC124EKA POWER ON MUTING D192 UDZSTE-1713B C474 470 16V R470 22k R471 22k C471 120p R473 22k C493 47 35V R491 10k C490 100 16V C491 R475 C473 0.1 24k 100p R490 R485 10k 24k C483 100p HEADPHONE AMP IC401 NJM4580E(TE2) GND R472 C472 22k 100p R474 33k VCC CN309 5P HP-SW HP-MUTE HP.R-CH GND HP.L-CH (CHASSIS) R481 22k R480 22k C481 120p R482 22k R483 22k C192 0 56 56 R484 33k C482 100p C484 470 16V FB304 C326 47 6.3V C327 0.01 D3 BCKO LRCKO C344 0.01 C358 0.01 SCK FB315 C393 0.01 C392 100 10V D1 BCKO LRCKO C409 0.01 SCK INIT PGMUTE NSMUTE SCDT SHIFT LAT1 INIT PGMUTE NSMUTE SCDT SHIFT LAT3 C306 0.01 R301 1.0k C311 0.01 STREAM PROCESSOR IC305 CXD9634Q R325 22 R337 1.0k C387 0.01 C388 0.01 STREAM PROCESSOR IC310 CXD9634Q C415 0.01 C416 0.01 FB301 C312 100 10V R304 100 C328 0.1 C331 0.1 R305 100 R307 100 C337 0.1 C351 0.1 R320 100 C359 0.01 FB314 C389 100 10V R343 100 C394 0.1 R348 100 C399 0.1 R349 100 C408 0.1 R350 100 C410 0.1 A19 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 (Page 57) A13 A14 A15 A16 A17 A18
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