Pioneer-SA-610-Service-Manual电路原理图.pdf

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1、f f o ll ,r*:( EefvicecVlanual STEREO AMPLIFIER S -Ci,lO ()rrroruEErl RadioFans.CN 收音机爱 好者资料库 o This service manual is applicable to the KU type. CONTENTS I . S P E C I F I C A T | O N S . . . . . . . 3 2 . F R O N T P A N E L F A C I L I T I E S . . . . . 4 3 . D I S A S S E M B L Y . . . . 6 4 . P

2、 A R T S L O C A T I O N . . . . . . 6 5 . B L O C K D I A G R A M . . . . . . 8 6 . L E V E L D I A G R A M . . . . . . . 8 T . C T R C U I T D E S C R I P T I O N S . . . . . . 9 S . A D J U S T M E N T S . . . . . . 1 0 9. EXPLODEDVIEWSANDPARTSLIST . . . . . . . 11 10. SCHEMATIC DIAGRAM, P.C. BOA

3、RD PATTERNS AND PARTS LIST 1 0 . 1 M i s c e l l a n e a . - . . . 1 4 10.2 Schematic Diagram 15 10.3 P.C. Board Connection Diagram 18 10.4 Parts List of P.C. Board Assembly 21 11. PACKING . . . . . . 2 2 ( RadioFans.CN 收音机爱 好者资料库 r I 1. SPECIFICATIONS Semiconductors lCs Transistors 27 D i o d e s .

4、 . . . . . 1 8 Amplifier Section Continuous p0wer output of 45watts* per chan- nel, min., at 8ohms from 20Hertz to 20,000 Hertz with no more than 0.3%total harmonic distortion. Total Harmonic Distortion (20 Hertz to 20,000 Hertz, I ohms, from AUX) 22.5 watts per channelpower output .No more than 0.0

5、2% Intermodulation Distortion (50 Hertz : 7,000 Hertz= 4 : 1 8 ohms, from AUX) continuous rated power output . . No more than 0.03% 22.5 watts per channel power output No more than O.O2% Damping Factor (2OHertz to 20.000 Hertz, S ohms) . . 50 I nput (Sensitivity/lmpedance) PHONO .2.5mV/50kilohms TUN

6、ER 150mV/50 kilohms A U X . . . . . 1 5 0 m V / 5 0 k i l o h m s TAPE PLAY 1 ,2 . . 150mV/50 kilohms Phono Overload Level (T.H.D. O.O5o/o, 1.000H2) PHONO 130mV Output (Level) T A P E R E C l , 2 . . . . . 1 5 0 m V S p e a k e r . . . . A , B , O F F siA-ci1 cl Frequency Response PHONO (R IAA Equal

7、ization) TUNER, AUX, TAPE PLAY 20Hz to 20.000H210.3d8 1 . 2 . . 1OHz to 60,000H2 13dB Tone Control B A S S . . . t 1 0 d B ( 1 0 0 H 2 ) T R E B L E . . . . t 1 0 d B ( 1 0 , 0 0 0 H 2 ) Subsonic Filter . . 15Hz (-6dB/oct) Loudness Contour (Volume control set at -40dB position) . . . . +6dB (100H2),

8、 +3dB (10,000H2) Hum and Noise (lHF, short-circuited, A network) PHONO . . .82dB T U N E R , A U X , T A P E P L A Y 1 , 2 . . , . . . I O O d B Miscellaneous Power Requirements AC 120V,60H2 PowerConsumption .100W(UL) Dimensions . 42O(Wl x 94(H) x 347(D) mm 16-9/16(W) x 3-11l16(H) x 13-11/16(D) in W

9、eight (without package) 6.9kg (15 lb 3oz) Furnished Parts O p e r a t i n g l n s t r u c t i o n s . . . . . . . . 1 NOTE: Specifications and the design subject to possible modifications without notice due to improvements. * Measured pursuant to the Federal Trade Commission,s Trade Regulation rule

10、on Power Output Claims for Amplifiers. 2. FRONT PANEL FACILITIES O POWER SWITCH Set this switch to ON to supply power to the amplifier. There will be a short delay when it is set to ON. because the muting circuit has been actuated to suppress the unpleasant noise that is sometimes generated when the

11、 power is on and off . SPCETER SELECTOR Use this selector to select the speaker system. OFF: Sound not obtained from speakers. A: Sound obtained from speakers connected to the A speaker terminals. B: Sound obtained from speakers connected to the B speaker terminals. BASS AND TREBLE CONTROLS Use thes

12、e controls to adjust the bass and the treble. lf you set the tone switch to ON and turn the bass control to right from its center position, you will be able to emphasize the sound in the low-frequency range. Con- versely, turning the bass control to the left from the center position, you will attenu

13、ate the sound. You can use the treble control to adjust the sound in the high-frequency range. POWER METER This meter allows you to read out the rated power level on the fluorescent display tube when speakers with a nominal impedance of 8 ohms are connected to the ampl if iers speaker terminals. FUN

14、CTTON INDICATORS The TUNER, PHONO, TAPE, AUX function indicators light up in accordance with the position of the function se lector. FUNCTION SELECTOR Use this selector to select the program source. When set. the function indicator above the meter panel correspond- ing to the position of the functio

15、n selector will light up. TUNER: Set here when listening to broadcasts on a tuner connected to the TUNER jacks. (The TUNER function indicator lights up.) PHONO: Set here when playing records on a turntable connected to the PHONO jacks. (The PHONO function indicator lights up.) TAPE 1: Set here when

16、playing tapes on the tape deck connected to the TAPE 1 jacks. (The TAPE function indicator lights up.) AUX: Set here when listening to a program source which is connected to the AUX jacks. (The AUX function indicator lights up.) r i I i O volurvrE coNTRoL Use this control to adjust the output level

17、to the speakers and headphones. Turn it clockwise to increase the output level. No sound will be heard if you set it to ,0., nCRopHoNE JAcK Plug the headphones into this jack when you want to listen through your stereo headphones. NOTE: Set the speaker selector to OFF when listening only with head-

18、phones. ) suesoNtc FTLTER SWTTCH When this switch is set to the l 5Hz position, the subsonic filter with a cut-off frequency of 15Hz is actuated. The subsonic filter serves to attenuate frequencies lower than 15Hz in a 6dB/oct slope. lt is therefore effective in suppressing ultra-low-frequency noise

19、 which is generated by record warp and other causes. You cannot actually hear this noise but it is a factor in the generation of intermodulation distortion and it may damage your speaker system. Set this switch to the 1SHz position during record play for the best effect. rorue swtrcH Set this switch

20、 to ON when adjusting the bass and treble controls. When set to the upper (OFF) position, the tone control circuits are disengaged and frequency response is flat. This function is convenient for checking phono car- tridge and speaker tone quality and listening room acoustics. powen tNDtcAToR When th

21、e power switch is set to ON this lamp lights up, indicating the amplif ier is turned on. sA-Ci1cl LouolrrEss swtrcH When listening to a performance with the volume control turned down, set this switch to ON and the bass and treble will be accentuated. When the volume is low, the human ear finds it h

22、arder to hear the bass and treble than when the volume is high. The loudness switch is thus designed to compensate for this deficiency. By setting it to ON, the bass and treble come through much more strongly and the sound takes on a punch even when the volume control is turned down. rnpe 2 swrTcH S

23、et this switch to the ON position when monitoring a tape performance on a tape deck which you have connected to the TAPE 2 jacks or when monitoring a recording. NOTE: Set the switch to the upper (OFF) position when tistening to records or broadcasts, etc. selected by the function selector. BalarucE

24、coNTRoL Use this control to balance the volume of the left and right channels. lf the sound appears to be louder on the right, it means that the volume of the right channel is higher. Turn the balance control to the left and adjust. Conversely, if the sound appears to be louder on the left, it means

25、 that the volume of the left channel is higher. Therefore, turn the balance control to the right and adjust. I I f r t- 3. DISASSEMBLY Bonnet Case Remove the four screws Front Panel Remove the four screws o. e. Bottom Plate Remove the six screws O. o The !i, marh found on some component parts indica

26、tes the importance of the safety factor of the part. There fore, when replacing, be sure to use parts of identical designation. 4. PARTS LOCATION Front PanelView m (t .J!g!r.- Knob (BALANCEI AAB.223 Lever knob (LOUDNESS, TAPE 2) AAD.2OO o.oo/o Bonnet case Front panel 6 Front View with Front Panel Re

27、moved Variable resistor (BASS. TREBLE) ACT-127 I Lever switch (POWER ASK.520 Headphones .jack AKN-023 Lever switch (SUBSONIC, TONE) ASK-1 71 Top View with Bonnet Removed j Power transformer ATT-667 Switch assembly GWS-215 Headphones assembly GWX460 Tone control assembly GWG-138 Rear Panel View Termi

28、nal INPUT) AK8.064 Terminal (TAPE 1) AKB-063 !tlr rl|r l tu I Variable resistor ( BA LANCE) ACT-130 -Lever switch (TAPE 2) siA-610 Fluorescent indicator tube AAV-O06 Slide rotary switch (FUNCTION) ASX-I 13 I o L:-Variable resistor (VOLUME) ASK.172 Lever switch ( LOUDN ESS) ASK-171 AF amplifier assem

29、bly GWK.144 Switch assembly GWS-216 Volume assembly GWX459 I AC socker AKP.O32 1i Power code ADG-023 Strein reliel AEC-327 Terminal (SPEAKERS) AKE-051 f t- t sl ide rota ry r*i ttr -=-. (SPEAKERS) I : ASE-oo3 | , ll 5. BLOCK DIAGRAM swtrcHEs: st Fu TP4 and TP3, Rch; TP2 and TP1) of the AF Amplifier

30、Assembly (GWK-144). 4. Check that the voltage between TP4 and TP3 (Lch) lies within the DC 4mV-50mV range then make a similar check for the Rch (between TP2 and TP1). If the voltage is less than 4mV, cut jumper wire A (Lch), and jumper wire B (Rch). If the voltage exceeds 70mV, check for circuit fai

31、lure. 8.2 OUTPUT INDICATOR ADJUSTMENT 1. Set the TONE CONTROL to the center position. 2. Set the SPEAKERS selector to the A position, and connect an 8O resistor and AC voltmeter to the speaker output terminals. 3. Set the FUNCTION switch to the AUX position, and apply a 7kHz, 150mV signal to the AUX

32、 terminals. 4. Adjust the VOLUME control so that the voltage on the output terminals (SPEAKERS) read 9V (AC). 5. Adjust VR1 (Lch) and VR2 (Rch) of the in- dicator assembly so that the output power indicator read 10 watts. AF Amplifier Assembly (GWK-144) Jumper wire A Jumper -l vR2 vR1 F.L Meter Asse

33、mbly e Fig. 8-1 Adjustment point 1 0 sA-61 cl r 9. EXPLODED VIEWS AND PARTS LIST Exterior Component fa I f- Parts List NOTE: c Parts without part number cannot be supplied. o The A marh found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing

34、, be sure to use parts of id.enti- cal designation. Key No. Part No.Description f, 1 . 2. 3. 4. 5. 6. 7. 8. 9. 10. ANE.269 ABA-079 AAD.2OO AN8.847 AAB.222 AAB.223 AAB.221 ABA-186 AB4-066 Bonnet case Screw Lever knob Front panel assembly Knob Knob Knob Screw Bottom plate Screw .4 .t4 - : 1;r Interior

35、 Component l K ? um ;l _s- il Y2o 44 29 30 32 34 - - 36,2ssl- ffu.Q N f - , ro 9;i, w 38 Y siA-cil o tt Parts List Key No. Part No.DescriptionKey No. Part No.Description | x- l 1. 4rT-667 2. 3. 4. GWS-215 A s. AsK-s2o A e. Acc-ool 7. GWX460 8. GWG-I38 9. AWV07 10. 11. 12. GWS-216 13. GWX-459 14. 15.

36、 AEL-320 16. 17. A rg. AKP-032 19. Azo. ADG-o23 21 . AEC-327 22. AKE-O51 23. Azc. AEK-Ioo 25. GWK-I44 Power transformer Wire clip Frame Switch assembly Lever switch Capacitor Headphones assembly Tone control assembly F.L. assembly Cushion LED socket Switch assembly Volume assembly Cushion rubber LED

37、 Panel stay Heat sink AC socket Rear panel Power code Strein relief Terminal Terminal (GND) Fuse AF amplifier assembly 26. ASK-I71 27. ASK-172 28. ACT-130 29. AKB-063 30. AKB-064 3 1 . 32. AEC-672 33. ABA-107 34. 484-066 35. ABA-234 36. A84-026 37. M45-O86 38. 871-004 39. ABE-005 40. ABA-240 4t. ABA

38、-198 42. 43. AEC-352 44. 45. AEC-488 46. 2SA1 108/A/O or R 47. 25C2588/A/Oor R 48. ABA-145 Lever switch Lever switch Variable resistor Terminal Terminal Frame Foot assembly Screw Screw Screw Screw 1 t spacer Nut 9 Washer Screw Screw Remote wire Nylon rivet P.C.B. holder I nsulator spacer Transistor

39、t hfe should have the Transistor J same rank Screw r- T, 1 3 1O. SCHEMATIC DIAGRAM.P.C.BOARD PATTERNS AND PARTS LIST 10.1 MISCELLANEA NOTE: c When ordering resistors,first conuert resistance ualues into code form as shown in the following examples. Ex. 1 When there are 2 effectiue digits (any digit

40、apart from 0), such as 560 ohm and 47h ohm (tolerance is shown by J = SVo, and K = 10Vo). 56Oa-56x10t-561 . RDVTPSEIilJ 4 7 h a - 4 7 x 1 0 3 - 4 7 3 . . . R D | / t P S A A B J 6 . S a - 1 R S . . _ . . . R N 2 H E E K t a - 0 1 0 . . . . . . 8 S r P 0 / ( Ex. 2 When there are 3 effective digits (s

41、uch as in high precision metal film resistors). 5.62ha 562 x 10 5621. . . RN7ISrB trgm ,F o The A mark found on sotne component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. Miscellaneous Parts ASSEMBLIES Pa

42、rt No. Symbol 5 019, o2o I nte snoura have the same rank number in this parts list. orR .j AEL.32O D1 LED CAPACITOR Part No. Symbol + II |IIp-*_|.:.F :n I l_UI l-r i t-1 I I I l:?-#I $il | Lry I i o I E-l I Hl lffil .i#,ffiffii I t o o 4 7 / 2 5 r 3 l i 1 7 | | .AUX l J1 i*,rt5i illlF-._*i-*l l:; l

43、1Jn*ffii l-: l-l :iHEi-Tf llll l _H ll.ll llll-.-. 1 ffiNrRoLAss.v(2,2,Gw6.,3a I - i t*41+.t_|dr:,:f.,u1*,oI | | Hl fd h | | l , J L-,=:i *HE- l- ftzzzu, llr- Ll- - rI I I I I I L SW ITCH ES: s t , 7 : F U N C T I O N T U N E R - P H O N O - T A P E I - A U X SZ:TApE?ON-OFF 5 3 : L O U D N E S S O N

44、 - O F F 5 4 : S U B S O N I C ( 1 5 H z ) O N - O F F 5 5 : S P E A K E R S O F F - A - B 5 6 . P O W E R O N _ O F F 5 8 : T O N E O N - O F F The underlined indicates the switch position. c D 123 S W I T C H A s s y G W S - ? 1 5 l-_ I -l R5l 2.2k D3 rs2075 c39 o.ot/ 500 - - f c67 27p I i-T-i ; ?

45、t I -J-l F ttr-J 56 utt* SB%, o* l o.00r2 Rrol 6.2 t c 6 8 27o cto to k !* l lF nea6zr YFl,i., I _.-J?rJ-d )L Assy (2/21 GWG -138 I 820(t/2w) I a s E - o o 3 t- 2SC19r4A-G ol 82P ts2076 c6l roo,/so Q 2 H A r 2 0 t O *-J ,r.3i. R92 ilOk R52 R z O l g k R z Z tO C 4 8 az6 2scrass-R ro A I orr cezso 0

46、l ( P O W E R ) A I C 5 8 4A - O.OllACtso T 2 ATT- 577 ot7 lt/zwl A rro oizso v r a A v - o o 6 AF AMP Assy (2/21 G W K - 1 4 4 AC POWER CORO a D G - o 2 3 A I cez 6.ot t L _ _ _ a c r 2 5 J 7 8 9 .- F - l . _1_fr_ I l l 3 i - 3 l . - . l L - J r* J Jl L_j | *r- ll l 2k I I- l i l ! l l t i 2SA985 2

47、SC 2275 trr-$ 7 of Transistors and f Cs 2 S C 1 8 1 5 A 2SC19144 suffix=O ) ot No-B !ilf-rvpe No )-nE h-1tt/ ve /l 2SC n lg 2SC 2602 , Lot No-S;a/ n*=-+*LfT-rvpe No flK s! B 3r! 2SA 1 1 08A 2SC2588A Type *-_N+-,_ n,.ffi ll lt (J- -Lot No s u l l us 2SC 1 38; n-$ii r-ot ruo-Ul+-rvpe No m /! 2sc ,:r ?

48、 - r? p-.-LotNo rype ruo- t-hre )fr1=-c,.i, il il u surTrx I E U 2SD7 12 frru-fu LotNoffin. uui T A7; : ru -=-J 7 8 I c D EiA-61cI 1 7 10.3 P.C. BOARD CONNECTION DIAGRAM FL Asry (AWV.007I Lch Rch HEADPHONE Arry (GWX460I SWITCH Asy (cws-216) EtA-Ci1 cl HEADPHONE Asy (cwx460l VOLUME Arry (GWX459) 2s?A

49、11o,AlA/ I l o ACl 20V 6OHz -t ; t * L - - - - - - _ - - _ J T1 POWER TFIANSFORMER SWITCHEOUNSWITCHEO AF AMP Ary (GWK-1441 CONTROL Ary (GWG-I38) siA-61 Cl 10.4 PARTS LIST OF P.C. BOARD ASSEMBLY Parts List of Amplifier Assembly (GWK-144) CAPACITORS Part No.Symbol & Description SEMICONDUCTORS Part No.Symbol & Description ccDsL 101J 50 CEA 1O2M sOL CEA 2