Sony-STRDE197-rec-sm 维修电路原理图.pdf
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1、1SERVICE MANUALUS ModelCanadian ModelAEP ModelSTR-DE197FM STEREO/FM-AM RECEIVERAUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTALHARMONIC DISTORTION:(Models of area code US only)With 8 ohm loads, both channels driven, from20 20,000 Hz; rated 100 watts per channelminimum RMS power, with no more than0.0
2、9 % total harmonic distortion from 250milliwatts to rated output.Amplifier sectionPOWER OUTPUTModels of area code US, CNDPower Output at Stereo Mode(8 ohms 1 kHz, THD 0.7 %)125 W + 125 W 1)Models of area code AEPPower Output at Stereo Mode(8 ohms 1 kHz, THD 0.7 %)100 W + 100 W 1)1) Measured under th
3、e following conditions:Area codePower requirementsUS, CND120 V AC, 60 HzAEP230 V AC, 50 HzFrequency responseCD, MD/TAPE,20 Hz 50 kHzVIDEO 1, 2+0/0.5 dB (with bassboost and tone bypassed)Inputs (Analog)CD, MD/TAPE,Sensitivity: 500 mVVIDEO 1, 2Impedance: 50 kilohmsS/N 2) : 85 dB(A, 500 mV 3) )2) INPUT
4、 SHORT (with bass boost and tone bypassed).3) Weighted network, input level.SPECIFICATIONSOutputs (Analog)MD/TAPE (OUT),Voltage: 500 mVVIDEO 1 (AUDIO OUT)Impedance: 10 kilohmsBass Boost:+8 dB at 70 HzTone:10 dB at 100 Hz and10 kHzFM tuner sectionTuning range87.5 108.0 MHzAntennaFM wire antennaAntenn
5、a terminals75 ohms, unbalancedIntermediate frequency10.7 MHzSensitivityMono:18.3 dBf, 2.2 V/75 ohmsStereo:38.3 dBf, 22.5 V/75 ohmsUsable sensitivity11.2 dBf, 1 V/75 ohmsS/NMono:76 dBStereo:70 dBHarmonic distortion at 1 kHzMono:0.3%Stereo:0.5%Separation45 dB at 1 kHzFrequency response30 Hz 15 kHz,+0.
6、5/2 dBSelectivity60 dB at 400 kHzVer. 1.2 2006. 029-877-864-032006B04-1 2006. 02Sony CorporationHome Audio DivisionPublished by Sony Techno Create Corporation Continued on next page Photo: Black typeRadioFans.CN 收音机爱 好者资料库2STR-DE197AM tuner sectionTuning rangeModels of area code US, CNDWith 10-kHz t
7、uning scale: 530 1,710 kHz 4)With 9-kHz tuning scale:531 1,710 kHz 4)Models of area code AEPWith 9-kHz tuning scale:531 1,602 kHzAntennaLoop antennaIntermediate frequency450 kHzUsable sensitivity50 dB/m (at 1,000 kHz or999 kHz)S/N54 dB (at 50 mV/m)Harmonic distortion0.5 % (50 mV/m,400 Hz)Selectivity
8、 At 9 kHz:35 dB At 10 kHz:40 dB4) You can change the AM tuning scale to 9 kHz or10 kHz. After tuning in any AM station, turn offthe receiver. Hold down PRESET TUNING + andpress ?/1. All preset stations will be erased whenyou change the tuning scale. To reset the scale to10 kHz (or 9 kHz), repeat the
9、 procedure.GeneralPower requirementsArea codePower consumptionUS, CND120 V AC, 60 HzAEP230 V AC, 50/60 HzPower consumptionArea codePower consumptionUS190 WCND270 VAAEP210 WPower consumption (during standby mode)0.5 WAC outletsArea codeAC outletsUS, CND1 switched, 120 W/1A MAXAEP1 switched, 100 W MAX
10、Dimensions430 132.5 302 mm(17 5 1/4 11 7/8 inches)including projecting partsand controlsMass (Approx.)7.0 kg (15 lb 7 oz)Supplied accessoriesFM wire antenna (1)AM loop antenna (1)Remote commander RM-U185 (1)R6 (size-AA) batteries (2)Design and specifications are subject to change withoutnotice. Abbr
11、eviationCND: Canadian model1.5 k0.15 FACvoltmeter(0.75 V)To Exposed MetalParts on SetEarth GroundFig. A. Using an AC voltmeter to check AC leakage.SAFETY CHECK-OUTAfter correcting the original service problem, perform the followingsafety check before releasing the set to the customer:Check the anten
12、na terminals, metal trim, “metallized” knobs, screws,and all other exposed metal parts for AC leakage. Check leakage asdescribed below.LEAKAGE TESTThe AC leakage from any exposed metal part to earth ground andfrom all exposed metal parts to any exposed metal part having areturn to chassis, must not
13、exceed 0.5 mA (500 microamperes).Leakage current can be measured by any one of three methods.1. A commercial leakage tester, such as the Simpson 229 or RCAWT-540A. Follow the manufacturers instructions to use theseinstruments.2. A battery-operated AC milliammeter. The Data Precision 245digital multi
14、meter is suitable for this job.3. Measuring the voltage drop across a resistor by means of a VOMor battery-operated AC voltmeter. The “limit” indication is 0.75V, so analog meters must have an accurate low-voltage scale. TheSimpson 250 and Sanwa SH-63Trd are examples of a passiveVOM that is suitable
15、. Nearly all battery operated digitalmultimeters that have a 2V AC range are suitable. (See Fig. A)SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINEWITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND INTHE PARTS LIST ARE CRITICAL TO SAFE OPERATION.REPLACE THESE COMPONENTS WITH SO
16、NY PARTS WHOSEPART NUMBERS APPEAR AS SHOWN IN THIS MANUAL ORIN SUPPLEMENTS PUBLISHED BY SONY.ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LESDIAGRAMMES SCHMATIQUES ET LA LISTE DES PICESSONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT.NE REMPLACER CES CO
17、MPOSANTS QUE PAR DES PICESSONY DONT LES NUMROS SONT DONNS DANS CE MANUELOU DANS LES SUPPLMENTS PUBLIS PAR SONY.RadioFans.CN 收音机爱 好者资料库3TABLE OF CONTENTS1. GENERALMain unit . 4Remote button description. 62. DISASSEMBLY2-1. Case . 72-2. Front Panel Section . 82-3. Back Panel. 82-4. Main Board . 93. TE
18、ST MODE. 104. DIAGRAMS4-1. IC Pin Description. 114-2. Circuit Boards Location . 134-3. Block Diagram Main Section .154-4. Block Diagram Power Section . 164-5. Printed Wiring Boards Main Section .174-6. Schematic Diagram Main Section (1/2) .184-7. Schematic Diagram Main Section (2/2) .194-8. Printed
19、Wiring Boards Panel Section .204-9. Schematic Diagram Panel Section .214-10. IC Block Diagrams. 225. EXPLODED VIEWS5-1. Case Section .235-2. Front Panel Section .245-3. Chassis Section . 256. ELECTRICAL PARTS LIST. 26STR-DE197MODEL IDENTIFICATION BACK PANEL Part No.MODELPART No.US4-253-299-0sAEP4-25
20、3-299-1sCND4-253-299-3s AbbreviationCND: Canadian model4STR-DE197SECTION 1GENERALThis section is extractedfrom instruction manual.5STR-DE1976STR-DE1977STR-DE197Note : This set can be disassemble according to the following sequence.SECTION 2DISASSEMBLY2-1. CASE2-1.CASE(Page 7)2-2.FRONT PANEL SECTION(
21、Page 8)2-3.BACK PANEL(Page 8)SET2-4.MAIN BOARD(Page 9)Note : Follow the disassembly procedure in the numerical order given.1 two screws (case 3 TP2)2 two screws (case 3 TP2)3 two screws (case 3 TP2)4 case8STR-DE1972-2. FRONT PANEL SECTION2-3. BACK PANEL6 front panel section4 two screws (BVTP3 x 8)1
22、CNS22 CNS33 CNP8015six screws(BVTP3 x 8)1 connector2 CNP9053 CNP9014 three screws (BVTP3 x 8)6 two screws (BVTP3 x 8)7 two screws (BVTP3 x 8)5 two screws (BVTP3 x 8)8 back panel (DE10)9STR-DE1972-4. MAIN BOARD5 two screws (+BV SUMITITE (B3)6 screw (+BV SUMITITE (B3)8 MAIN board7 screw (+BV SUMITITE
23、(B3)4 two screws (+BV SUMITITE (B3)1 CNP9023 CNP9042 CNP90310STR-DE197SECTION 3TEST MODEFluorescent Indicator Tube Test ModeAll fluorescent segments are tested. When this test is activated, allsegments turn on at the same time, then each segment turns on oneafter another.Procedure:1. While depressin
24、g the VIDEO 1, VIDEO 2, MD/TAPE, CD andthe TUNER buttons simultaneously, press the ?/1 button toturn on the main power.2. The FL tube will illuminate in half light on. The following dis-play will be repeated whenever the five function buttons arepressed. Operation of function buttons3. Press any but
25、ton other than the function buttons to release thecheck mode.AUTO-BETICAL Check Mode (AEP model)To auto-scanning and memories of RDS station.Procedure:1. While depressing the MEMORY/ENTER button, press the ?/1button to turn on the main power.2. The message “AUTO-BETICAL SELECT” are scrolled for amom
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