Sony HCD-C990 Service Manual - Page 59
Schematic, Diagram, Audio
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7-28. SCHEMATIC DIAGRAM - AUDIO Section - • See page 71 for Waveform. • See page 76 for IC Block Diagrams. HCD-C770/C990 VIDEO 1 AUDIO OUT R J205 6P AUDIO IN R AUDIO OUT L AUDIO IN L VIDEO OUT VIDEO IN VIDEO 2 AUDIO IN R COMPONENT VIDEO OUT Y AUDIO IN L COMPONENT VIDEO OUT PB/CB VIDEO IN COMPONENT VIDEO OUT PR/CR J206 6P R251 R231 75 75 (AEP) C201 330p R201 4.7k C214 0.01 C213 0.01 R204 47k Q201 2C2412 BUFFER R202 1k R203 68k RDS DECODER C204 560p C207 4.7 50V R205 100k R206 470k C203 0.1 R207 270 R292 1k D201 UDZ-TE17-4.3B C209 47 16V C205 0.01 C206 51 C208 56 X201 4.332MHz C210 22 35V C215 1 R290 470k C216 1 R291 470k R293 1k Q220 2SC2412 AMP R294 330 Q221 2SC2412 AMP R295 330 C211 22 35V Q222,223 B+ SWITCH L205 10µH Q222 2SA1037AK R216 4.7k Q223 DTC124EKA R213 47k IC201 BU1924F-E2 C223 0.1 R237 6.8k R230 C233 100k 1000p R229 C234 100k 1000p C236 R235 220p 47k R241 47k C238 220p C237 22 6.3V R233 10k R238 10k R232 6.8k R243 6.8k C235 22 6.3V C239 22 35V R250 10k R244 10k R249 6.8k R246 47k R253 47k C240 220p C241 22 35V R242 10k C242 R236 220p 10k R247 10k R252 10k C221 22 35V C225 0.1 R223 10k R218 10k R224 100 R219 100 B A INH X3 X0 X VSS VEE Y1 Y3 AUDIO INPUT SELECTOR IC202 MC14052 BDR2 C226 0.1 C228 0.1 Q206 DTC124EK INVERTER Q205 DTC124EK INVERTER X1 X2 Y0 VDD Y Y2 Q208 DTC343TK-T -146 Q207,208 MUTING Q207 DTC343TK-T -146 R217 33k R225 33k R214 6.8k C220 22 35V R226 33k C224 22 35V R220 100k R222 33k R215 6.8k R221 100k C222 22 35V R227 1k C230 10 50V R228 1k C232 10 50V R239 1k R245 1k C608 6800p C609 6800p L206 10µH D202 D203 MA111-TX MA111-TX TD R212 220 CL R208 220 DO R209 220 CE R211 220 DI R210 220 DO DI TD CE CL C227 22 35V R254 75 C243 10 6.3V C245 10 50V L-CH TUNED R-CH 10V A.GND FM-DET A.GND CK DO CE DI CN201 11P FM/AM TUNER PACK SUPPLIED WITH THE ASSEMBLED BLOCK COAXIAL FM 75Ω AM CN205 2P RDATA RCLK TUNDO TUNDIN TUNSTE TUNCE TUNCLK D.GND D.IN D.DND D.OUT D.GND I/P-SEL NC AV0 AV1 AV2 AUMUTE TU-ON DGND L A.GND R A.GND R.IN A.GND L.IN 10V 10V CN202 29P CNP205 2P S201 SCAN SELECT SELECTABLE INTERLACE (Page 52) CN204 2P Y CB V-OUT CR V1-IN AV2 V2-IN AV1 AVO GND D-IN CN208 11P R AMP BOARD (1/2) PIN301 (Page 56) (Page 61) 59 59
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