Sony-STRDE445-rec-sm 维修电路原理图.pdf

1STR-DE445/DE545/SE501US ModelSTR-DE445/DE545/SE501Canadian ModelAEP ModelUK ModelSTR-DE445/DE545E ModelAustralian ModelChinese ModelPX ModelSTR-DE545FM STEREO FM-AM RECEIVERSERVICE MANUALSPECIFICATIONSDolby Laboratories Licensing Corporation.“DOLBY” the double-D symbol ; “AC-3” and “PRO LOGIC”are trademarks of Dolby Laboratories Licensing Corporation.Photo: STR-DE445AUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTAL HARMONICDISTORTIONWith 8 loads, both channels driven, from20 20,000 Hz; rated 100a) W per channelminimum RMS power, with no more than0.09% total harmonic distortion from 250mW to rated output (US model only).STR-DE445:a) 80 WAmplifier sectionRated Power Output at Stereo modeUS model: (8 20 Hz 20 kHz, THD 0.09 % )EXCEPT US: (8 1 kHz, THD 0.7 %)STR-DE545/SE501: 100 W + 100 WSTR-DE445: 80 W + 80 WReference Power Output(8 at 1 kHz, THD 0.7 %)STR-DE545/SE501: Front: 100 W + 100 W Center: 100 W Rear: 100 W + 100 WSTR-DE445: Front: 80 W + 80 W Center: 80 W Rear: 80 W + 80 WFrequency responseCD, MD/TAPE, DVD/LD, TV/SAT, VIDEO, AUX: 10 Hz 50 kHz +0.5/2 dB (with sound field, tone, and bass boost bypassed)Inputs (Analog)5.1 CH INPUT, CD, DVD/LD,MD/TAPE, TV/SAT, VIDEO,AUX: Sensitivity: 250 mV Impedance: 50 k S/Nb): 96 dB (A, 250 mVc)b) Input short.c) Weighted nework, input level.Inputs (Digital)DVD/LD (coaxial): Sensitivity: Impedance: 75 S/N: 100 dB (A, 20 kHz LPF)DVD/LD, TV/SAT* (Optical): Sensitivity: Impedance: S/N: 100 dB (A, 20 kHz LPF)*) STR-DE545 and STR-SE501 only.OutputsMD/TAPE, (REC OUT); VIDEO(AUDIO OUT): Voltage: 250 mV, Impedance: 10 kSUB WOOFER: Voltage: 2 V Impedance: 1 kPHONES: Accepts low- and high- impedance headphonesBASS BOOST+6 dB at 70 HzTONE6 dB at 100 Hz and 10 kHzSampling Frequency48 kHzFM tuner sectionTuning range87.5 108.0 MHzAntenna terminals 75 , unbalancedSensitivityMono: 18.3 dBf, 2.2 V/75 Stereo: 38.3 dBf, 22.5 V/75 Usable sensitivity11.2 dBf, 1 V/75 S/NMono: 76 dBStereo: 70 dBHarmonic distortion at 1 kHzMono: 0.3 %Stereo: 0.5 %Separation45 dB at 1 kHzFrequency response30 Hz 15 kHz+0.5/2 dBSelectivity60 dB at 400 kHz Continued on next page RadioFans.CN 收音机爱 好者资料库STR-DE445/DE545/SE50111113-4. SCHEMATIC DIAGRAM DIGITAL SECTION See page 7 for Waveforms. See page 21 for IC Pin Functions.PINFUNCTIONPINFUNCTIONPINFUNCTIONRadioFans.CN 收音机爱 好者资料库STR-DE445/DE545/SE50113133-6. SCHEMATIC DIAGRAM MAIN (1/3) SECTION See page 7 for Waveforms. See page 28 for IC Block Diagrams.STR-DE445/DE545/SE50114143-7. SCHEMATIC DIAGRAM MAIN (2/3) SECTION STR-DE445/DE545/SE50115153-8. SCHEMATIC DIAGRAM MAIN (3/3) SECTION STR-DE445/DE545/SE50117173-10. SCHEMATIC DIAGRAM DISPLAY SECTION See page 7 for Waveforms. See page 26 for IC Pin Functions.PINFUNCTIONSTR-DE445/DE545/SE50119193-12. SCHEMATIC DIAGRAM VIDEO/KEY SECTION See page 29 for IC Block Diagrams.