Pioneer sx 820 service manual
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Extracted text from pioneer sx 820 service manual (Ocr-read)
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MODEL SX-3700 COMES IN FOUR VERSIONS DISTINGUISHED AS FOLLOWS. Typ. Voltag. Ramarks KU 120V only U.S.A. model KC '| 20V only Can€da model 11OV , 12OV ,22OV , end 24OV (Switchabls) Gen€ral exDort model 1 1OV . 12OV , 22OV , and 240V ( Switcha ble ) U.S. Military mod6l e This service manual is applicable to the SX-3700/KU. For servicing of the other types, please refer to the additional service manual. CONTENTS 1. SPECTF |CATTONS ........... 2. FRONT PANEL FACILITIES . , . . 3. BLOCK DIAGRAM 4. CIRCUIT DESCR IPTIONS 4.1 FM Tuner 4.2 AM Tuner 4.3 Display Circuit . . 4.4 Equalizer Amplif ier . . . . . . . 4.5 Tone Control Amplifier . . . . 4.6 Power Amplif ier . . .... ... 4.7 Power Indicator Circuit .. -. 4.8 Protection Cirorit . . . . . . -. 5. DISASSEMBLY ...... 6. PARTS LOCATION 2 ..4 ..6 ..8 . 11 . 11 . 11 . 11 . 11 . 13 .14 17 18 19 19 21 za 30 34 J5 41 7. DIAL CORD STRINGING 8. ADJUSTMENTS 8.1 FM Tuner 8.2 AM Tuner 8.3 ldle Current Adiustment 8.4 FL IndicatorCircuit ... -....... 9. SCHEMATIC DIAGRAMS, P,C. BOARD CONNECTION DIAGRAM AND PARTS LIST 9.1 Schematic Diagram . 9.2 P.C. Board Conneaion Oiagram . . . ......16 l' 9.3 PansList..... 1O. PACKING 11. EXPLODEOVIEW.... 12. ADDITIONAL SERVICE MANUAL SX.82O l
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six-37C'c' 1. SPECIFICATIONS Amplifier Section Continuous power output of 45watts- per chan. nel, min., at 8 ohms from 20Hertz to 20,000 Hertz with n0 more than0.0?% total harmonic d i stort ion . Total Harmonic Oistortion (20 Hertz to 20,000 Hertz. 8 ohms, f rom AUX) continuous rated Dower outout . . No more than 0.02% 22.5 watts per channel power output ...... Nomorethan0,02% Intermodulation Distortion (50 Hertz : 7,0O0 Henz = 4 : 1, 8 ohms, from AUX) continuous rated oower output . . No more than 0.02% 22,5 watts per channel power output ...... Nomorethan0.02% Damping Factor (20 Hertz to 20,000 Hertz, S ohms) ,"o,irs"",i,i"'ir),;;";;;";; "" PHONO . 2.5mV/50 kilohms AUX,TAPEPLAY 1,2 .......'l50mv/50kilohms Phono Overload Level (T.H.O.0.02%, 1,000H2) PHONO. Output TAPE REC 1,2 -.. . Speaker . Frequency Response PHONO (R IAA Equalization) 250mV l50mV A, B, A+B AUX, TAPE PLAY 1, 2 Tone Control BASS ,,. TREBLE. Subsonic Filter . . 20Hz to 20.000H2 10.2d8 . . . lOHzto IOO,OOOHZ]]dB ..... iSdB (100H2) ..... iSdB (10,000H2) ..... 15Hz (-tuB/oct) Loudness Contour (Volume control set at -40d8 position) ...... +6dB{100H2) Hum and Noise (lHF, short-circuited. A network) PHONO . ........79d8 AUX,TAPE PLAY 1.2,. ..... 95dB 400kHz. Stereo Separation Distortion (at 65dBf) MONO l00Hz ........ 1kH2......... 6kHz......... STEREO ,IOOHZ 1kHZ......... 6kH2......... Capture Ratio Alternate Channel Selectivity o.'t70 o.o7./" 0.15% o.2y, o.15% o.25% 1.ft8 75d B .45d8 .35d8 . 2OHz to lskHz]3 3dB . 65dB .65d8 .90d8 .55dB . 50dB .65dB . 19.2dBf (spv) . 300 ohms balanced, 75 ohms unbalanced. A t l kHz 30Hz to l5kHz Frequency Response . Spurious Response Ratio ..... . lmage Response Ratio ... . . .,. lF Response Ratio . . . AN4Suppression Ratio. .. . . ... SubcarrierProductRatio .. . . . . SCA Rejection Ratio. .. . . . . . . Muting Threshold Antenna Input AM Tuner Section Sensitivity (lHF, Ferrite Antenna) (lHF, Ext. antenna) . . Selectivity Signal-to-Noise Ratio. ...... . . lmage Besponse Ratio,.... . . . lF Response Ratio . . . Antenna. . 300rrV/m .. 15pV .. 27dB . . 52dB . . 32dB . . 40d8 Ferrite loopstick antenna ,A A FM Tuner Section Usable Sensitivity (lHF) . . . 50dB Ou ieting Sensitivity MONO .. STEREO . Signal-to-Noise Ratio t\40No . . STEREO, 10.3dBf (1.8pV) 15dBf (3.1l]V) 37dBJ (39pV) 80dB {at 65dBf) 75dB (at 85dBf) Miscellaneous Power Requirements .......... AC 120V.60H2 PowerConsumption ... ..... 290W(UL) Dimensions .. 480(W) x 145(H) x364(D)mm 18-14/16(W) x 5-11/16{H) x 14-5l16(D}in Weight (without package) Furnished Parts 11.6k9 {25 lb 9oz) Operatinginstructions ...,,.... 1 FMT-typeantenna ........... 1 *Measured pursuant to the Federal Trcde commission's Trade Regulation tule on Power Output Claims for Amplifie6. NOTE: Specifications and the design subject to possible modifications without notice due to improvements. A