Pioneer sx 3800 service manual
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Extracted text from pioneer sx 3800 service manual (Ocr-read)
Page 1
MODEL SX.38OO COMES IN FOUR VERSIONS DISTINGUISHED AS FOLLOWS: Type Volt4e Remarks KU 120V only U.S.A. model s/G 1 10V, 120V, 22QV, and 240V (Switchable) U.S. Militarv model s 1 10V, 12OV, 22OY , and 24OV (Switchabte) General exDort model KC l20V only Canada model r This service manual is applicable to the KU type. When repairing the S/G and S Wpe, please see the additional service manual lp 47 -p571. When repairing the KC type. olease see the a- dditional service manual (ART-519). CONTENTS I ; t H H H n I H H H H T H H I i t I I + 1. SPECIFICATIONS 2, FRONT PANEL FACILITIES 3. BLOCK DIAGBAM 4. CIRCUIT DESCRIPTIONS 4.1 FM Tuner 4.2 AM Tuner 4.3 Display Circuit 4.4 EqualizerAmplifier 4.5 Tone Control Amplifier 4.6 Power Amplif ier . . . 4.7 Power Indicator Circuit 4.8 Protection Circuit DISASSEMBLY.... PARTS LOCATION DIAL CORD STRINGING ADJUSTMENTS 8,1 FM Tuner 8.2 AM Tuner 22 8.3 PowerAmplifier... 23 8.4 FL Indicator Circuit 24 9. EXPLODED VIEW 25 10. SCHEMATIC DIAGRAM, P.C. EOARD CONNECTION DIAGRAM AND PARTS LIST 10. 1 Schematic Diagram 3l 10.2 P.C. Board Connection Diagram 35 10.3 PartsList ...,...41 11. PACK|NG.... 46 ADDITIONAL SE RV ICE MANUAL I.SPEC|F|CAT|ONS .....47 2. CONTRAST OF MISCELLANEOUS PARTS . . . . 48 3. SCHEMATIC DIAGRAM, P.C. BOARD PATTERNS AND PARTS LIST 3. 1 Schematic Diagram 49 3.2 Switch Assembly {AWS.148) 57 5. 1 8. 3 5 7 I o o 12 12 12 14 14 16 17 19 20 e
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I I t r t t t t I t t T t t t t I t I 1. SPECTFTCATIONS Power Ampl if ier Section Continuous Power 0utput of 60watts* per chan- nel, min., at Sohms from 20Hertz to 20,000 Hertz with n0 m0re than 0.005% total harmo' nic distortion, Total Harmonic Distortion (20 Hertz to 20,000 Hertz, I ohms) continuous rated power output . . No more than 0.005% 30 watts per channel power output No more than 0.005% Intermodulation Distortion (50 Hertz : 7,000 Hertz = 4 : 1) continuous rated power output No more than 0.0057o 30 watts per channel power output No more than 0,005% Frequency Response . . . . . 5 Hertz to 200,000 Hertz l! OA lnput Sensitivity/lmpedance (POWER AMP lN) or,rri 1v/50 kilohms Speaker A, B, A+B "-: :: ::"::'': 1*:": 1o i* He*z' 8 0hms) Hum and Noise (lHF, short-circuited, A network) 115d8 Preamplifier Section I nput (Sensitivity/l mpedance) PHONO 2.5mV/50 kilohms AUX,TAPE PLAY 1,2 . . .. . . . 150mVl50kilohms Phono Overload Level {T.H.D.0.005%, 1,000 Hertz) PHONO .. .. . 250mV Output ( Level/l mpedance) TAPERECI,2 .. ..,. 150mV PREAMP OUT (Rr_: 50 kilohms) -....1V/l kilohms {Volume: max.} Total Harmonic Distortion (20 Hertz to 20,000 Hertz) Tone Control BASS . tSdB (100H2) TREBLE ..... r',l0dB(10,000H2) Subsonic Filter . 15Hz (-6dB/oct.) Loudness Contour (Volume control set at *40d8 position) . . . . +6dB (100H2),+3dB (10,000H2) Hum and Noise (lHF, short-circuited, A network) PHONO. .....82d8 AUX,TAPEPLAY 1,2 ..,. . . . 11OdB Attenuator. ....-20d8 FM Tuner Section PHONO (REC OUT) AUX,TAPE PLAY 1,2 . . . . . . Frequency Besponse PHONO (RIAA Equalization) or", iori ,ro" i ,';'o^u"' to 20'000 Hertz t0'2dB Usable Sensitivity (lH F ) 50dB Ouieting Sensitivity MONO STEREO Signal-to-Noise Ratio MONO STEREO Distortion (at 65dBf) MONO l00Hz. lkHz. 6kHz . STEREO IOOHz. lkHz . 6kHz - Capture Ratio. , Alternate Channel Selectivity 400kHz ..,..,7ft8 Stereo Separation 1kHz. ......45d8 30H2to15kH2. ...... 35dB Frequency Response ....2}Hzto15kHz1!loe SpuriousResponse Ratio, . . . . . . 65dB lmageResponseRatio ... 65dB lFResponseRatio.. .... 90dB AMSuppressionRatio ... 55dB SubcarrierProduct Ratio . . . . . . . 50dB SCARejectionRatio .... 64dB Muting Thteshold 19.2dBf (5pV) Antenna lnput . 300 ohms balanced, 75 ohms unbalanced. 10.3dBf {1.8itv) 16.2dBf (3.6sV) 37dBf (39pV) 83dB (at 65dBf) 78dB (at 80dBf, 0.1o/o a.a7% 0.15% O.2Yo 0.15% 0.25% r.odB No more than 0.005% {10V output} No more than 0.005% (10V output) 7Hz to 8o,0oo Hertz ]f aa