Service c/Manual AM/FM STEREO RECEIVER xX=-880 QPIONEER’1. SPECIFICATIONS Semiconductors a Transistors. 5 DIGGS -oceccstaice oce sree eee eee ert 37 Amplifier Section Continuous Power Output of 60 watts” per channel, min., at 8 ohms from 20 Hertz to 20,000 Hertz with no more than 0.05% total harmonic distortion, or 60 watts per channel at 4 ohms from 20 Hertz to 20,000 Hertz with no more than 0.08% total harmonic distortion. Total Harmonic Distortion (20 Hertz to 20,000 Hertz, from AUX) continuous rated power ourpUt . ; 30 watts per channel power output, No more than 0.05% Bohms .. 25-40. a eee ee No more than 0.03%! 1 watt per channel power output, BOHMS 6 cares Pe No more than 0.03% Intermodulation Distortion (50 Hertz : 7,000 Hertz = 4:1, from AUX) continuous rated power output . . .No more than 0.05% 30 watts per channel power output, Bohms vies ee Ses No more than 0.03% | watt per channel power output, S ohms . No more than 0.03% Input (Sensitivity Impedance) PRONG. 6 secretes wees eens 2.5mV/50 kilohms AUX... as . 150mV/50 kilohms TAPE PLAY 1. 2.2... 150mV/50 kilohms TAPE PLAY Zo... eee elas 150mV/50 kilotims Damping Factor (20Hertz to 20,000Hertz,8.ohms) .. 30 200mv PHONG Overload Level (IKHz, 1.H,D,; 0.05%) -. Output (Level/Impedance} TAPE REC 1... TAPE REC 2 SPEAKERS... .+ HEADPHONES . Frequency Response , PHONO [RIAA Equalization) Jone Contal BASS nc ieip et gual eae eukaeese +8dB, —7dB (100Hz) TREBLE 6.0.99 Bag ts ali +7dB,-6UB (10kHz) Filter- Low 2c ise ee ese I5Hz (6dB/oct.} Loudness Contour (Wolume control set at —40UB position) +6dB (100H2), +3dB (10kHz} Hum and Noise (IHF, short-circuited, A network, rated power) PHONG Hoy Sa Rc ee ae 7od6 AUX, TAPEPLAY 2.5053. .sa ee Bes 95dB FM Section Usable Sensitivity MONO » 10.30BF (1.8) 50dB Quieting Sensitivity POND 5 jaysre eee esterase caves 16.20BE (3.60) STEREO, 0. ee eee ee 37.OdBF (39K) Signal-to-Noise Ratio at [ BSdB MONG: sistas ala a eS 80dB STEREOS 555920 5cck. eee enlele ce eee ES 720B Distortion at GSdBf TOOHZ.. cae MONG accesccrcpacenevecnice QUEM STEREO. v4 - 15% IkHe . 0... MONO wo creer renee etee 0.07% STEREO 64.05% O.15% GkHz 2.22. MONO .. STEREO 0.25% Frequency Response... .. . 30Hz ta Sone dB Capture Ratio, 2... 6222. ceed ee ee eee 1 dB Selectivity ... 7. . Spurious Response Ratio Image Response Ratio .... IF Response Ratio... 2... . AM Suppression Ratio. . 02. 0c. eyed ee S0dB Muting Threshold . - Stereo Separation . .. 45dB (ike), 3548 (30H2~15kH2) Subcarrier Production Ratio .. 20.4604. eee ese SOG SCA Rejection Rath’... ..0.-+-- 420 e hee ee ees 65dB . 300 ohms balanced 75 ohms unbalanced Antenna Input...» AM Section Sensitivity (WHF, ferrite antenna) 2.0.22 20.04 300) (IHF, ext:antenna) ... 2. - Selectivity . . Signal-to-Noise Ratio Image Response Ratio IF Response Ratio . ANTENNA «eee ees . Built-in ferrite lodpatic inten Miscellaneous Power Requirements 00.006 64 eee 120, 60H: Power Consumption . 190W (UL), 240¥A (CSA) Dimensions . . « 480(W) x 140(H) x 320(D) mm 18-7/8(W) x 5-1/2(H) « 12-S/8(D)in Weight .. Without package . 12,2k¢ (261b 1402) With package. ou... e. 04 13.Bke (30lb doz}2. FRONT PANEL FACILITIES POWER METERS ~ ‘These meters allow you to read out the rited power lee hen speakers with 3 nominal impedance of K ohirs are connected tothe receivers speaker termina’, | NOTE: | ‘Thee values are related to the impedance of the Speohere and they vary according tothe frequency. | In order to find out the exact output leva. connect an | Bron dummy load meted ofthe speakers STEREO INDICATOR — This inaicatr lights ap: when the rcsver is tunedin receives storeo broadcast FUNCTION INDICATORS “These lamps incteate the pation of sien UNCTION POWER SWITCH. Set this switch to ON to wupply power to the recive. “There will bea short delay when it Set to ON, becaust the muting circuit has been actuated to suppress the un pleasant nse that fs sometines generated when the ‘awe is switched an aed off. call gH gala Ha hang PHONES JACK — Plug the headphones into this lack when you want co listen tieaugh your sere neadphones Release hoth SPEAKERS bhutions if You want to tisten co {he sound through your hendphares only {This rieans that beth butions wil be ese) SPEAKERS SWITCHES Depeess the buitan corresponding to the speakers con rnectod 10 the SPEAKERS terminal [A oF B) on the rear panel, You can deprevs bots of these buttons to liston to ound from too prs of speaker syetame atte same te. BASS AND TREBLE CONTROLS When turned clockuise from the OFF position, the respone in the bast or traole range respectively, is bbaoetad. Turing eounterclockwice attenuates. the ro sponse. At the OFF postion the tone contro! circuit is bbypasied and Frequency response i lat FM MUTING SWITCH —__| sO O DIAL POINTER. This pointer indicates the broadcasting strane LOW FILTER SWITCH ‘When tn sulieh 6 et to 13He, a dBloct autonuatin ‘an be proviged for freuencies below 15H2. This mean that you eaa cancel cut noise inthe ultraiow Fequencle which is generated by lowpitched rumble from a tur table and ether forms of station, Although ths nie annst be head, ean generate intenmadhl atin ait. ion and darnage the speakers When his switch Is set to the upper pusiton (On), she FM muting function acts to suppres unpleasant inter: station noise while tuning between the FM broadcasting Stations. When the switch is set Lo the OFF postion, the FM routing function doesnot act, thus enabling stable reception of weak radia cationsSIGNAL METER ‘When tuning in to an AM or PM station, the optimum reception position is indicated by che marimum deflee tion of the meter pointe to the ight. | TUNING METER When cating in so an FM statin, the optimum reception fostion i indicated whan the meter pointer Geens ta ted venir. Check that tie SIGNAL meter pointer as |] Getta er tote rg es posible TUNING KNOB Use this knob to tone in tobrosdeastng tations Select the station and suns for optimum reception by observing the dl scale and the toning meters VOLUME CONTROL Uso this eontrl to aduet the output level to the speakers ‘and keadphores, Turn it clackotize te inerease tho output level. No sound willbe heard if you stro MIN. [LOUDNESS SWITCH ‘Set this switeh 0 ON when istening ata tow volume Tho Fequaney tesponte of the Huan ea ares according te the litaning volume, al setting this swith tothe ON povitan compensates fr hearing response by ernahasiing the baz and table, BALANCE CONTROL [Use this contro to balances the volume of the loft and right channel. Fist, however, set the MODE siteh to MOND. Ifthe sound sppeats to be louder on the right it ‘eas thet the volume of the Fight channels higher. Ture the BALANCE contrl to the left and adjust. Conversely, if the sound appears to be toude on the ff it means that the volume of dhe left channel is hghet. Thcefor, tun the BALANCE contro to the right and adjust. After ad justing,Zeturn the MODE switch to STEREO. TAPE MONITOR SWITCH Erploy for tape playback or fo monitor a recording in FUNCTION SWITCH Use this switebta select me aragram soca. For a seeand affer he with ie alated, no ound wil be heard. This (das to the operation of tho muting eeuis, which can Suppress the unplessant switching noise ganeratee when the FUNCTION switch i lectad AN: When Uatening to AM brondeasting FN: When Istening to FM broadcasting The STEREO insleater lights up when the receive in (ured in to an FM stereo broadens, PHONO: Wheh olaying a record on the urate cor ecie 10 te PHONO jacks. AUX: When listening to. ao audio component cor: pected 10 the AUX lacks progr i Playback oF menitaring of 3 ape deck con- nected 10 the TAPE 1 jacks SOURCE: Bs sure to set to this position when not sing the tape deck fer playa. 2 Playback oF monitoring of 2 tape deck con nected to the TAPE 2jacks. Nore: When listening to records ov breadests, be sare tose tis ten to SOURCE, Soutd wil not be ob\uinad fom speakers IP se fo 1 07 2 |STAPE DUPLICATE SWITCH Set this switch to ON when you want to dupicte or edit | siprecectsed tape using two tape decks “wove stress {se this sth for setectieg mono ose perormanes STERED: | Set to this poston for perma! stereo opetee ten MONO: When set to this position, the left and iit channel signals will be mixed and re9t0- ‘duced monophorially from both spezkerSx-880 3. BLOCK DIAGRAM loh-4 -—Q—0 wemecrs a PHO 0 wemers 9 Ty =o Bones Loooe-(h scrtev4. CIRCUIT DESCRIPTIONS 4.1 TUNER SECTION FM Frontend ‘The FM frontend consisis of a 3-ganged tuning capacitor, a dual-gate MOS FET equipped L-stage RF amplifier, « local oscillator and a mixer. The output of the local oseillator (a modified Clapp izcuit employing a single transistor) is applied to the base of mixer transistor. IF Amplifier and Detector This stage made up of two TCs, and three dual- element ceramic filters, The IC (HA1201) con- Stilutes a single-stage differential amplifier curre: limiting limiter, The [C ( PA8OO1-A ) in the fol- lowing stage incorporates IF amplifiers, quadra ture detector, moter drive and FM muting circuit, bic, See the block diagram on page 31 for the inter: hal structure of this 1C Multiplex Decoder ‘The subeamrier generator (PLD system), NFB demodulator, automatic pilot canceller, and stereo! Mono automatic swith are also built in an IC (PAL001-A). With the addition of a few CR ele- ments, a multiplex decader of high §-N ratio and. low distortion has been achieved. (Again, refer to pave 31 for further detailes of this 1C). A major feature of the PALOOL-A is the automatic pilot canceller. This circuit detects the level of the 9kHz pilot signal, and automatically adjusts to hat level to caneel out the pilot signal complete ly. This has made the decigning of the low-pass filtor in the following stage very much easier, and hhas further extended the frequency response at the high end, "The output signal from the multiplex decoder is passed on via the deemphasis circuit and Af Emplifier (whieh serves as both low-pass filter and ‘rosstalk canceller) to the FM muting gate, FM Muting Circuit ‘The FET gaie circuit connected to the output of tho FM tuner serves as 2 muting circuit which Gliminates unwented FUNCTION selector switch- ing noise and FM interstation noise. This muting Gireuit is shown In Pig. 1. ‘When the FUNCTION selector switch is at ‘AUX, PHONO or AM position, Q, will tum on due to *B being applied to its base via the FUNCTION switeh, and Q,(FBT) being tumed off, and the output signal of the FM tuner being muted ‘When the FUNCTION switch is changed to the FM position, Q, will tun off due to +B being not applied to its base. The potential et the gate of Qr will consequently increase (ai a speed deter- ined by the C,, R, time constant) until Qs is fumed on, and muting condition terminated ‘ADC voltage appears at No.12 pin of the 1F Amp IC (PA3OOL-A) whenever there is: more than #70kHz dotuning, or the input level is very weak, which is applied to the base of Q,, and the ‘output signal of the FM tuner being muted. ‘AM Tuner ‘The AM tuner employs a 2-ganged tuning capa- citor coupled to an IC (HA1197) which incor- porates a Lstage LF amplifier, 2-stage IF ampli- fier and detector. See the block diagram on page 31 for the internal structure of this IC Q) of the output circuit (Fig. 2) is a-special AM muting circuit. ‘This cirenit is operated until the 'AM tuner stabilizes immediately after the FUNC PION selector switch has been set to the AM position, The instant the FUNCTION selector Ewitch is sot to AM position, +B is supplied to through C,, and the baso of Q, is forward biased Consequently, @; is turned on, the AM output signal is shorted to during the time constant of CyB Seay a HD ciorscorns©]"]@eienicora OH Coe I Le runes ir sur serecron| | vex vecccencg| | Ane I eater @ © £ ; FP pcmones suns ue Fa a a1 runcron Sereno BORD) nat +e ch a a al Fig 1 FM mating set4.2 AUDIO SECTION Phono Equalizer Amplifier ‘This circuit is an NFB type equalizer, with one IC (HA1497) in both L and R channels. This IC it low noise type, and gives an open loop gain of 8248, ‘The main performence specifications for this circuit include a voltage gain of 35.5aB (at 1kHz), 8 phono dynamic margin or overload level of 200mV (RMS, at 1kHz, with 0.05% total harmonic Cistortion), and PHONO equalization within 40.248 (20 ~ 20, 000442), Tone Control Circuit ‘A CR-type tone control cireult is used in this unit. The signal is amplified to necessary level by the Flat amplifier (IC) with voltage gain of about 51.408 in front of the control circutt. When BASS and TREBLE controls are at center position, the tone control networks are automati cally switched out of the signal path in order to provide perfectly flat frequency response. ‘The first stage is a differential amplifier formed by dual transistor, while the load circuit forms 2 cunent mirror cixouit. ‘Tho current minor serves to make this stage operate in push-pull mode, thereby eliminating the even numbered harmonics, and doubling the gain. ‘The pre-drivor stage is a Darlington connection, while the load circuit forms @ constant-current source, thereby obiaining a high voltage gain. ‘The power stage is 2 2-stage Darlington connec- tion SEEP capable of delivering 80 watts por chan: nel at 82 (20 ~ 20,0002, 0.05% THD). Because there are no low-end time constant in the NFB circuit, amplification down to the DC region becomes possible, resulting in an outstand: ing low end frequency response. (Note, however, that TC inputs will be eut by the inpat coupling capacitor.) sx-880 The transistor in the input circuit has been designed to absorb the base current of tho first stage to prevent the appearance of a DC voltage, thereby maintaining the output neutral point volt- age (DC) at 0 volts. Output Meter Drive Circuit Fundamentally, this circuit is the same as those employed in the SA-7700 and the SA-6700. A. wide meter range is obiained by compressing the dynamic range of the output signal by taking advantage of the initial portion of the dicde Vp-p relation. Protection Circuit ‘The purpose of this circuit ia to protect both the speakers and the power amplifiers, The relay in the output circuit is automatically opened in any of the following cases: 1. During the “‘transiont operations” when the power supply is tumed on and off. 2. Upan detection of an averload, caused by a short eireuit in the load. 3. Upon detection of a DC veltage in the output clreult, caused by component failure or a dent. ‘The relay-activating transistor is controlled by the IC (PA8004). Fundamentally, this circuit is the same as those employed in the SA-7700. am TUNER an TUNER ze ‘OPHONO CL eRe ie FuncTion si esas py v4 J Fig, 2 AM muting circuit5. DISASSEMBLY cover (O-O), push buttons). Remove the two screws (@ — @ ) | sonoma foe ee ea oe ania | Remove the ten screws (@— @ ) to detach the | bottom plate. Weacen Gover Front Pane! Bottom Plote6. PARTS LOCATION 6.1 FRONT PANEL VIEW Front panel assembly ANE! Wooden cover assembly An.o72 AAA.O5D Knob (Pt * ower) 2 kno (LOUDNESS) ans | +: mes loo SFE NKERE A, 0} | Gese WtK ieee | ee Knod (BASS, TREBL | | Lknob (BALANCE) cous ;} ee eee rm MUIBSLEON ALTE Ley era nowrrom ‘mtn mur, Lon LTE [ee Knob (FUNCTION) — Knob (MODE, DUPLICATE) AABATS AAD-138 6.2 FRONT VIEW WITH PANEL REMOVED Twin meter Twin mater (POMER: Dial pointer GIGNALITUNING) Anwasa AAFOI4 AAWOTS Tuning shat enebly AKA2IT Lever switoh (POWER) ever sitch ASKEO7 iLoupness| ASK-144 Prone jack PHONES) AKN00S \Vanable resistor (woLuve} ACV-161 Variable raster (BALANCE) ‘ual push ISFEAKERS A, B) ASG 13: Variable resistor (BASS): 7 ACT-O19, em ar sr aen (SUPORTE (EUNCTIONN ASK-144 ASE107sx-880 6.3 TOP VIEW Lamp ov AEL-023 Lamp socket 1 type BV, 0.34) Power transformer Tuning trum assembly ATT BIS AKA lytic cap Tuner secombly a spoon 804 WEDS AG094 6.4 REAR PANEL VIEW Shige snitch Ferrite baranteniia — (He cUEAgiS) ATS.505 ASH-O18 ‘Terminal (SPEAKERS A, 6) rial (ANTENNA) T inal AKA.002 | | ARE.026 Antenne holder axa-ot2 Teeminal (GND| AKEOST AC poner cord ‘ADG-022 Terminal mine! INPUT, TAPE 1 REC) (TAPE T,PLAY, TAPE 2) —— AC sock AKB.038, AK BOS AKP-008 1 (AC OUTLETS) i7. DIAL CORD STRINGING 1. Remove the wooden cover and front panel. 2. Loosen the serow securing the tuning drum, and then remove the drum from the tuning capacitor shaft. 3, Tie one end of the dial cord to the pag located on the inside of the tuning drum, and lead the cord out through the cut-out section (see Fig. 4) 4. With the tuning capacitor blacies turned full in, fun the tuning drum sround on the tuning capacitor shaft so that the setacrew faces directly upwards. 5. Pass the dial cord around pulleys A, Band Cin that order (see Fig. 7) Tuning erm | Tuning capacitor shat Fig. 6. Wind it 3 times around the tuning sheft in @ clockwise direction (as viewed from the rear panel), Pass the dial cord around pulley D, make 2 ‘winds around the tuning dram, 8, Tie it to the spring hook, making sure there is sufficient tension in the cord (see Fig. 5). 9. Turn the tuning shaft back and forin to check that the dial cord moves smoothly and effi- ciently. ‘Then cut off any oxcess dial cord remaining. 10. Turn the tuning shaft in 2 counter-clockwise Girection (as viewed from the front panel) a5 far as it will go, and attach the dial pointer to the dial cord so that the pointer reads start point (STMHz) (see Fig. 6), LL. Finally apply the locking paint to the cord securing positions (tuning drum peg and spring hook} and the dial pointer connection, Dial potnter Fig. 6 Attach the pointer 49 Fie. 7 Diat cord suiaging8. ADJUSTMENTS 8.1 FM TUNER ‘Tuning coil In the FM front-end does not have an adjusting core. Consequently, tracking adjust. ments at 9OMHz are perfonned by regulating the gap between the rotor and stator of the tuning capacitors (VC, VC, VC;). ‘The expression “adjust VO," (VC, VC, ) found in the text means that the two outer rotor blades of each of these tuning capacitors are to be extended outwarcls with spatula (Part No: GGK066) as chown in Fig. 8), Rotor bade exTEND Turing E eee | ee ah Sut [= }h oxo sthor Aotor ode Fig. 8 Adjustment of the tuning capacitor Connect the test instruments as shown in Fig. 10. Set the FUNCTION switch to FM. ‘Tum the FM MUTING switeh to OFF, Set the cial pointer of the SX-880 to 106ME, Set the FM Signal Cenexator (FM SG) output to 60dB at 106Mtiz, with 100% modulation (275kHz deviation) for 400H2. This modula tion setting should bo used for all the follow ing adjustments (section 6 to 23), + Adjust TC) to give the maximum reading on the SIGNAL metar of the SX-880. Adjust the primary (lowor) core of 7; so that the TUNING meter indicator needle of the SX-880 reads dead center, 8. Set the FM SG output to 1548, 9. Adjust TC, and TC, to give the maximum reading on the SIGNAL meter. 10, Set the $X-880 dial pointer to 90MHz. 11. Set the FM SG output to GOdB at 90MHz, 12. Adjust VC, for meximum reading on the SIGNAL meter. 13. Set the FM SG ontput to 15a, 14. Adjust VC, and VC, s0 that the SIGNAL moter reading reaches a maximum, 15, Alternately repeat the zdjustments of VC,, VC, and VC, when the dial pointer is at 9oMH2, and of TC;, TC, and TC, when the dial pointer is at LOGMEYz, until adjustment at the one frequency requires no further re adjustment at the other frequency. 16. Adjust the core of T; to give the maximum reading on the SIGNAL meter. 17. De-me the SX-880 (to 2 position at which only interstation noise is hoard}, and adjust the primary (lower) core of T; 's0 that the TUNING meter indicator needle reads desd center, 18. Set the FM SG output to 60dB at 98MI, 19. Tune the SX-880 to a dial reading of 98MIle and check that the TUNING meter is reading correctly at the center of meter seala, 20, Adjust the secondary (upper) core of give a minimum level of distortion. 21, Repeat the steps detailed in section 17 to 20) for the adjustment of primary and secondary cores of T; until both requirements axe fully satisfied. 22 Sot the SX-880 dial indication and FM SG tre- quency for 98MEz, 23.Tum the FM MUTING switch to ON, and check the muting threshold. If the muting threshold is more than 28qB, cut the jumper toad N(Fig. 10), 24, Set the FM SG output to 1064, 25, Adjust VR,, so that the SIGNAL meter reads 4.8 (80% of the distance between 4 and 5 on the scale, soe Fig. 9), to SINGANL meter FUNCTION Fig. 9 SIGNAL mater calibrationsx-880 Multiplex Decoder 80. Turn the FM SG modulation mode setting to extemal modulation. 26. Connset an Multiplex Signal Generator (MPX Sel the MPX SG to pilot signal (19KH%2) only SG} to the external modulator terminal of the 31. FMSG. (21.5kFa deviation), 27.Connect the pilot signal (19kHa) output 32. Adjust VR s0 that an AC voltmeter (IEC terminal of the MEX SC to the X-platea ther: terminal) shows minimum reading (19kH2 zontal input) of an osrlloscope, and use lea) probe to connect the Yplates [retical inpat) $3. Adjust the MPX SG modulation setting to to the No. 23 terminal on the Tuner aasembly. TeHz, L+B, O05 modulstion (+67. 5kHe devin 8, Set the FM SO output to G6AB, unmodulated. tion), with 10% pilot modulation (17.5kHs 8. Adjust VR; to freee the motion of the result, Aeviation) ing Lissajous figure 34, Adjust the core of , for minimum distortion i in tho LkH2 demodulated output from L or Tinnjous figure adopts the genera form shen in Figure Hatta, Bi tae tothe fast that the MPM SC Oty pt anal antput ia ge wave, ond the No. 29 termiel caries & hte eaurfooth ese ap determined By the elfstncn ove FU signal gorerstor | lei Taal AC rolemate / Distortion meter ume [9 Cea a eye) iead'N oF 3 TN vagy dt ir Oe Br" ho.z30n| — Bo, @ Fig. 11 Licesjous fguro glee! Seen Fig, 10. Connection diagram for FM tuner scjustment82 AMTUNER 1. Connect the test instruments as shown in Fig, 12. 2, Sei the FUNCTION switch to AM. 3. Set the AM Signal Generator (AM SG) for 400Hz 30% modulation 100aB output. 4. Set the SX-880 dial indication and AM SG tre- quency for G00kHz. 5. Adjust T; core for maximum reading on an AC voltmeter. 6. Set the SX.880 dial indication and AM SG fre- quency for 1400kilz. 7. Adjust TC, for maximum reading on an AC voltmeter. AM ANTENNA 10, a. 12, 13. 1. Set the AMSG for 300B output. Set the SX-S80 dial indication and AM SG fre queney for B00kH7. Adjust T, and the barantonna core for max\- ‘mum reading on an AC voltmeter. Set the SX-880 dial indication and AMSG fre: ‘queney for 1400k#Hz. Adjust TC; and TC, for maximum reading on fan AC voltmeter. Repeat steps 9 to 12 altemately, until adjust ment at the one frequency requires no further readjustment at the other frequency Adjust Pe core to give the maximum reading onan AC voltmeter. {Ant signal generator Fig. 12 Connection diagram for AM tuner adjustment83 POWER AMPLIFIER Turn VR,(L) and VR,(R) fully around in the direction, but set VRe(L) and ‘center positions, Without any load or input signal, tam the POWER switch ON. DC Balance Adjust VR, (LL) and VR,(R) so. that potential ‘ifferonce etwaon terminals 5(L) and 12(R) tnd ground roads zoro volts (ta within 430m) If this lovol cannot be attained, diseonnect the Jumper leads P(L) and Q(R) (or reconnect if already disconnected), and ten teadjust. Idle Current Adjust VR,(L) and VR, (R) 30 that the potential difference betwoon tho ‘plus(+) terminals 8 (1) fand 11(R), and the minus (-) terminals 10(L) and 16(R) roads 30mV (or at least in the 20 io 10mY range) ‘After paiting @ current for about 10 minutes, check these voltage readings again. sx-880 ‘Output Meter Calibration 1, Sot the SPEAKERS A ewitch to ON; and con: neot an AC voltmeter to the SPEAKERS A ter miaals. 2, Sot the BASS and TREBLE controls te the fat (center) gosition. 8, Sei the FUNCTION switch 40 the AUX posi tion, and apply a 1kilz, 150m signal to the ‘put terminals. 4, Adjust the VOLUME coniral for an. AC volt ‘meter reading of 21.9V. 5. Aejust VEA(L) and WRyy(K) for reading of {50W (Oe) ar the output meter under this. con. dition Vay Vy Fla, 16 Power ampiier aawustment9. PACKING Sioe pao. Pu AHA189 Vinyl pouch Eine Operating instructions RB-272 Sheet cover —_ ‘ANG-091 Side pad Anaz00 ss Air csp “ ‘AHG-C40 Tetype FM antenna ADH.002 — Viny! pouch ANG.022 Packing cose AD Se57 [ 2 T 3 10. EXPLODED VIEW ‘Secow 4x15, ABA 200, ‘Wooden cover assembly amor? Torrinal AKE.025 Carbon 22M Seraw 3x6 BA.064 leah SREAKERS A.) Front pane! assembly AAD-I10 aioe? x \ S Col sorina 028 a Koob (POWER) AAD 19 vrasner 96-— nasoss hur m9 71-004 Knob (BASS, TREBLE) AABITS nob (FM MUTING, LOW FILTER AnD 138 y fe \< “ Knob [MODE, LOUDNESS a K ‘Washer 96 DUPLICATE) phere het Knob (TUNING) ( \ 871-004 AAROGD "Kd (TAPE MONITOR) coop ipa ance) Knob (VOLUME) AAB-176 AABB5 i I 2 I 3Sx-880 I a I 5 I a ro oy nisin po smo te sip: AG pone ord Abas) Strain relief PERSE bar-antenna A Serow 3x6 ‘Sceew 3x10 ~ ~~ 818-505 ABAOSS ‘ABACe2 7 ‘Screw 3x8. ‘\. Sorew 3x10 ABA-002, 4 iN guna notser axpots eer ears | —| ‘Bhat screw ae a seatyrlel petty (SPEAKERS A, : Fermi! (GND) ae eneiiig te waste Ul 3 ac wat ac ouTLETS) safe 2 Beene oS eae Chocke i 00H) ‘Screw 3x8 on a 724030 | | ABA-002 ~~ Slide switch Be ews 2 eure Terminal (ANTENNA Treks Tet | Tneur Tare 1 nec) ane? sat AKB-036 Fail {TAPE 1 PLAY, TAPE 2) Riso sere a8 ° A ay ~serew 4 \ ABAOGO \ 4 2 FASE sterol \ i \ nn eae i \ “Screw 48) a ® Kane county pan oa 1 - L 4 1Acrylic board: ‘ANF.035 Pullay assombly AECATB Pulley esseribly AECAT? Power transformer ATT-SI3 Seow 6 BBA 0B Noes A ABA 065 Nip SS Pas Z \_ 2 fone LARGO SY 7B wasnertaeod nu na ~ \V aars | Lamp (wedge type BV, 0.34) AEL-029 Ground terminal 7P] awn cxf, d stron 366 re ee ruse 20 aekcas Ate asonty Senor | CW 183 \ g By \ f (ioormesy” SB AY see 38 2 winter POWER) \ abaove Fo PMH Si | jiiin rare Z [SIGNALTUNING) Y [SAV O8 0. Diet pone! Aacia2 SS $s ee Dial pointer AF” 2 alley assembly AECATE (Srateeoverh snes Ae ge Nuc no“ fale ier cae AEC AIT Vise op ee Screw 3x8 Banoes I 2 [_ 3 =i 4 I 5 I € nore: rev To mare prt cannot be supped See Sew 9410 er Acne Reno ¥ —s Oe ards Ehctoytecansctor /\ ‘AWEDD9 joe erie Adon reno are A ; " i} Serow 3410 | i /BA082 J ae ‘herfoced nut 4 8513 x 3 Tuning drum asembly AXATNS aoe holder | Nylon vet ABA06S | Atco wv A Screw 3x10 ZB \\ ice wound resistor Bee \, 22091 sw pst Ave dy LOY ree |S Ton fone | GF ga— Wenger SY Hela S Transeo NP Ege BoM BP LED seumolytranustr Fors TP a SK axa 258705A/A/ R ors Sess ON aramcapactor—— OB NS ote 250v aS = seen Se? Laver switch ae | NEBR neg > Lane out {ord finer] | aor a ASK-057 ‘Screw 3x10 Tuning shatt asseribiy® a oa a, ‘ABA-082 Akal - Sema with pring wher” snag | Hristo ABA-208 org 2SBI0BA/A/ Aor S Sere 246 Headphone jack asembly 2507450/4/ F ot § en SS Sinise TS wean eo ae ABADES [Pg , Aawoos — Wiesidate] £° V¥ee 1 | el Sere 348 V a sexo V Scie 3x6 AGaNG c AF asebly [side fare] ‘Gwieta oo A seew axe soona abnoe Ba coe11. SCHEMATIC DIAGRAMS, P.C. BOARD PATTERNS AND PARTS LIST 11.1 MISCELLANEA Miscellaneous Parts Nore: When ordering rsittors frst covert recietance following excmples luet into code form 26 shown in the xT When there ore 2 effectioe digits (ony digit apart from 0). such os 560 ohm and 47% oh (Colerance fs shown by J= 5%, and K~ 10%), 5o0n Sex 10" Set RDWS BEDS a7 47x10 473 RDMES 47) ban ORS RNDHORS F In 010 RSP OL OK Ex 2 When there ore 3 effective digite (euch as in high precision metal film resis. so21 kxuse 8820 F SmITCHES PC. BOARD ASSEMBLIES Part. ‘Symbol Des aro. Desetiotien asiore 510 Slice (OE-ENPHASIS) ownes10 AF asembly ‘SK057 sn Lever POWER) Awe 000 “Tuner smerny AWE TE Foss oueroly| nxt LED seer TRANSFORMER AND COILS eos oe, Pact Symbol & Description 195 Headphone jock esenbiy A70.505 u Forte beatin aTrs1a " Pawar tanefaner omens 1910 a Choke coi 100.4 bare Ne. i GHRAGLTORS aain-094 Tw meter PORER) Aaw-o7s win meter (S]GNALITUNING) fun Ne, _Syebet § Dessripuon A0G-023, AC power core — =r AxBcae Femina INPUT, TAPE 1 REC) noone Coes: eeldereigues: ~1RpeURO axe.cae “Terminal (TAPE 1 PLAY, TAPE) AKE-C26 ermine! SPEAKERS 4,6) RESISTORS aKECH “Terminal (GND) ARP-o08 AC socket (RC OUTLETS! ar No Syma & Deverintion ARK-008 tare socket acwost m1 Wen wovrd 720/50 acne ra Cirbon compenition SEMICONDUCTORS 22M Symbol _ LAMPS AND FUSES: wsvrasala-R 01,02 os art No. ‘Symbol & Deseroton airmantay” oxot AcLow PLI-PLS Ler fone type 8V,0.28) ce ee 100 FUL Fuse2A E08 FUT, FUS Fuse tA AeKt08 FUL Fine 5A1 I 2 I 11.2 SCHEMATIC DIAGRAM i 0) 39K59 gucrog Oke wt pile Sate —— fas [sey [ee [26 «se ‘ae PATI“ a 4s a Ay & oi SWTCHES: RESSTORS: Sr Funcrion Se Lovoness Ss MUTI IM Jah VeW 25% TO Ee een re (ey ie TOLEAAN 3 Prono Se Low ALTER Se DE-EMOusis ——_canacrToRS pais Bee Tos at NaF UNLESS. OTHER Sp TAPE PONITOR $1 PROTECTION RELAY Sy POWER Te Sponce~ 2 oF oy SE on Th = sisna vou ete V = Oc veLTASe Ss Tag ougicare Sea sre a ee So EMEA 8 (Vy: ac VOLTAGE sre fat) ‘STEREO — ONO This ste basic senemitic diagram. pt he sey vary iets improvementa im de3'8n. ‘Tae AN mark fouse on seme component. pe Inportarce of the safety facta oF Ue purty replacing. be sure te use parts of identical% en HAan4s7 ey bs in a fea ala elal al &m NOTE: 3 The indicated semiconductors are representative only. Other alternative semiconductors may be usei are listed in the parts list. com Me aye os ane Wine 2SCITTSARt — 2SAST92 18582 2Saessx2 —2SCi9i3a2—_BSANISH? a 7] efit Sq cate ree ry ih Se zi N Les [ x 7\ | Tyeseeon?— ae2se0e| Ta . te yl fot efit | dos Fa ; Be | lia ee | aS | Fae bal Gay ne TP, 2sereoan a AKER A ri 2Bhoosace ae 4 Oma be os co z Ln ar ea Dy ASI555 i Rew LTISON SPEER La ua 2 BBersraal es en 2scisas ns Ren ca fae] Xap es —— te Tite — ofr ps Shbl a7 8 | ——— i SIGNAL METER BASS CONTROL Qi.2 HAI457 = 27s 2S B536 Q3.4 TA7IZ6P1 Q29 2SA9048 Q5.6 25979 Q30 280325R Q7.8 28C2291 Q31 2SC1384 Q910 254899 a32 250850 Qt1.12 2SC1904 = 33.34 2SA904A Q1314 2SC1775A 35 = PA3004 Q15.16 2SC1913 Q36 2SCI914A Qi718 25913 Q37—-28¢1885 Q19.20 2SCI775A 1.218155 Q21.22 25K34 03.4 STV4H Q23.28 2SC945A D5~B 10E2 Q24.25 25K34 017.19 181555 Q26oasp7i2 018 = MZ-061 AF Assembly (GWK-119)10 T iW 7 12 ac 120 6OH> UNSWITCHED 300W MAX ILLUMINATION LAMP BV 301 Fuse Assembly (ARW-171) Headphone Jack Assembly (GWX-195) 09~Die 2-126 x4 iL Lo] SPEAKER A Le DiS. 014 152076 x2 Meter Assembly (GWX-193) pe | = © i 10 I 1 L 2RESISTANCE VALUE CODES Code numbers of resistors used in Pioneer equipment are expressed in the following way:— Code number ———————> RD % PS 473 J NL Type of resistor 8B Cr 281885 (M213 4 co E Ge Ba iin 1 PAg004 Ih fer PALA LLea) 2sao7e i 2SA913 288536 2SB705A/A/ asciaiz © fe 2SD745A/A/ S§ 1234567 TATI36P1 4 } Index11.4 TUNER ASSEMBLY (AWE-099) igbosec 32Parts List of Tuner Assembly (AWE-099) TRANSFORMERS AND COILS SxX-880 Part No. ‘Symbol & Description a att Part No. Symbol & Description ATE-039. 1 FM IFT COMA 113J 50 C55, C56 ATE-040 T2 FM det. transformer CKDYA 562/50 C57, C58 ATB-013 73 AM osc. coil CKDYB 122K 50 C59 CEA 4R7P 35 C60, C28 724-028 L6, Le RF choke coil 2.2uH CEA 3R3P 50 C61 ATH.022 U7 RF choke coil 27uH CKDYF 223250 C63 ATF-053 F1—F3 FM ceramic filter COMA 823K 50 C64 ATF-034 F4 AM ceramic filter CKDYB 102K 50 C66. ATF-038 FS 455 kHz BPF CEA 100P 16 C71, C72, C76 CQSH 3313 50 cra CAPACITORS CCDXL O80F 50 C75 Part No. Symbol & Description Note: When ordering resistors, convert the ACK-012 VE Tuning:capacitor resistance value into code form and ‘AGM:006 ‘Tes Ceramicscinmer, RESISTORS then rewrite the part no. as before. CCDUI 120K 50 C1 Part No. Symbol & Description CCDSL 220K 50 C2 CKDYF 103Z50 C3—CS5, C8, C14, C16, C17, C23, C24 RD‘PS O00 J R1, R3-R8, R13—R34, R36—R41, R49 CKDYF 103250 C68—C70,C73 ROMPS OOO J R55— R65. CCDUJ150K50 C6 RO’VS OOO J R2, R9—R12, R42—RA48, AS0—RS4 RNYSQO000F R35 CCDSL150K50 C7, C22 CCDRH 150K 50 CoO ACP-018 vRI Semi-fixed ATK CCDSH O80F 50 C10 ACP-056, VR2 22k-B Gs RA7K 500 CII CCOCH 330K 50 C12 SEMICONDUCTORS CCDCH 150K 50 C13 Breet CCDSL101K 50 C15, C32 CKDYF 4732.50 C18—C21, C25, C26, C29, C30, C33 3SK59-Y or GR 1 CKDYF 4732.50 C62, CBS 2SC535-0 a2 28C461-B a3 CEA 2R2P 50 C27 HA1201 04 CEA 010P 50 C34, C41 CEA 220P 16 C35, C7 PAgOOLA as COSH 511/50 C36 PATOOL-A as CSEACREMG! «GE. 2SA726S-F orG Q7,08 (2SA750-E or F) CEANL 010P 50 038, C40 HA1197 08 CKDYB 821K 50 C39 SoMa a7aR ea Ste 2SC945A-RorQ Q10 CEA 331P 16 cas (2scrot4A-r) CEA 221P 16 aa, C53 qs0078 Bi.6e (181555) CKDYA 472) 50 C45, C46 (12473) CKDYB 182K 50 C47, C48 CKDYB 471K 50 C49, C50 CKDYB 152K 50 C51, C52 CCDSL680K 50 C5411.5 AF ASSEMBLY (GWK-119) Parts List SWITCHES AND COILS Part No. ce ASE-107 s1 Rotary slide (FUNCTION) ASK-150 82 Lever (TAPE MONITOR) ASK-145 83 Lever (DUPLICATE) ASK-144 sa Lavar (MODE) ASK-144 S5 Lever (LOUDNESS) ASK-144 sé Lever (LOW FILTER) ASR-020 s7 Relay ASG-139 se Dual push (SPEAKERS A, B) ASK-144 89 Lever (FM MUTING) 763-009 L1, L2 AF choke coil 2.2uH CAPACITORS = Part No. ‘Symbol & Deser CEANL2R2P 50 CCDSL 151K 50 C103, C104 CEA 471P 6 C105, C106 CCDSLIO1K50 C107, C108, C411, C412 CCDSL 200K 50 C109, C110 COPA 103G50 C111, C112 COPA 363G 50 C113, C114 COMA 33250 C117, C118 CEA 101P 25 C119, C120, C215, C216 CKDYB 331K 50 C201, C202, 0213, C214 COMA 223K 50 €203, C204 CEANLO10P 50 205, C206 CCDSL 560K 50 C207, C208, C233, C234 CEA 470P 6 €209, C210 CCDSLO500 50 C214, C212 CEANL 4R7P 25 C217, C218 CQMA 123/50 C219, 220 COMA 273/50 C221, C222 COMA 822) 50 C223, C224 COSA68IJ50 C225, C226 CEANL R22M 50 C229, C230 CCDSL 121K 50 C231, C232 CCDSL 221K 50 C235, C236 CCDSL 220K 500 6237, C238 CCDSL 221K 500 C241, C242, C245, C246 CKDYF 103K 50 C243, C244 COMA 663K 50 C247, C248 ACG.004 249, C250 Ceramic CEA 100? 16 c301, C419 CEA R47P 50, c302—C305 CEA Q10P 50 cao1 CEA 221P 6 c402 ACG-009 C403—C406 Ceremic a4 C101, C102, C115, C116, C227, C228 0.01/150V, 0.097/150V Part No. CEA 471P 63 CEA 931P 80 CEA 101P 50 CEA 101° 16 CEA SR3P 50 CSZA R22M 35 CEA 330P 16 CEA 470P 16 CEA 470P 35 CCDSL 100K 50 RESISTORS Part No ACV-161 ACT-019 ACV-195 (ACV-193) ACV-196 (acy-194) ACP-014 €92-063 ACP-056 ROMPS OOS ROMPS OOUJ RDMPS ON I RO“PS OO) RDMPS GOI ROMPS OOO) NSO OOOO F ACN-011 (RNSSQ 7651F) ACN-012 (RNY5SQ 9202F) RDMPSF On0 J ROMPSF OOD J Rs1P ood RDYPSF OOOJ Rs2P ood RN1H GOO K RD%Vs DOS RS3P OOo ACN-032 OTHERS Part No ANH-203 ABA-116 ABN.028 : Symbol & Description | cao7 408, e409, C422, C423 cai0 0413, cata C415, 0416 cai? cata 420, C421 239, 240 Note: When ordering resistors, convert the resistance value into code form and then rewrite the part no. as before, ‘Symbol & Desc vAt Variable (VOLUME) vR2 Variable (BALANCE) VR3 Variable (BASS) vR4 Variable (TREBLE) VR5,VRG Semi-fixed 150k-B VR?7,VR8_ Semi-tixed 100-8 vRi1 Semi-tixed 22k-8 R101—R106, R113-R118, R201— R222 R225—R245, R249, R250, R253, R254 R257, R258, R263, R264, A269, A270 R283, R284, R301—R9O4, RIO9—AI12 R403, R404, R407—R412, R414—R42O R422—R425, R428-A431 R107, R108 R109, R110 Metal film T.5BKI AW R117, R112 Metal film 92k/}.we R119, R120, R251, R252, R255, R256 A261, A262, R405, R406, R421, A259, A260 R273, R274, R223, A224, R432, R433 R401, A402, A413 R265 —A268, A245—R24B R271, R272 R275, R276, R281, R282 R305—R308 R426, R427 R277—R280Wire wound —0.47/5W Description Heat sink Screw 3x16 Nut MgPart No. ABN-047 71-004 871-010 ABE-001 ABE-006 Description Union nut Nut M9 Nut M7 Internal toothed lock wash 94 Internal toothed lock washer 74 SEMICONDUCTORS Part No. HAa1457 TATIZ6P1 2SA979-F 28C2291-F or G 28A899-V or B 28C1904-V or B 2SCI775A-E or F 2SC1913-R or Q 2SA9I3-R or Q QSCITTSA-E 28K34.C or D (28K117-Y or GR) 28C945A-0 or P (28C1914A-F) 2SK34-C or D 28D712C or D ‘2SB536-L or M (28A968-0 or Y) 2SA904A-F (2SAB93A-E or D) 2SD325R-D or & 2SC1384-R or 0 (28C1735-€ or D) 2SAB50-C or D (2SA912-R or Q) 2SA9044.F (2SA893A-D or E} PA3004 2SC19144-F (28C1649.0 or P) 2SC1885-R or S 151555 (182473) STV4H 10E2 [si801-02) 182471 MZ-061 (wz.061) SR3AM.8 Mz-140 (w2z-140) Symbol & Deser 1,02 93,04 05, a6 7, a8 a9, 010 ait, a12 13,014 Q15, a16 a17, a18 219, a20 a21, 022 023, 028 24, 025 026 a27 029 a30 031 032 033, 034 a35 a36 37 D1, D2, D17, D19, 029 D3, D4 DS—D8, 024-027 D15, D16, D3s pig D20—D23 28 Onze ye | 00 Asn 1 [Cu ‘tes yo dhs | 095 — lg EH Bare | Biaieatin — [oa ie si Dia sal {Stoann ath aml — Fa: — 25co45a wg awe Tk x tf 4 By ae Sea fe aR sider] Braof Bar 100% 255v Vy ASS CONTROL LE CONTROL, Me Roan 19,20 2SCI775Ax2 Ose 2Sn979%2 5,10 2 28A89gx2 Qin 2SASI3x2 SsxX-880 ST ds, 28Ci913 cm — +1 5 ve df amit eR Se [ete Fe Ga I P ’ ~ o Ppt ge ; fry 3 Fs se OSM Cg . 2 2scigo4x2 5 er = as G2 280908%¢ TSE 6 ve He tua ie 0; ve mv! | nk et Fo Pte Tag = = ‘Rares Cal yoo, Up t i it e ‘Ltatisert ay ? at eae Oss W7Pa Sas oy — Tin i * Bis, 4 fol a ae 2SCI778Ax7 | 7aBV in ax = _ 284850 i 28R'904a32 ae Qo Rag SK, é eoik ORS ey SR 18247ix0 & ic sav 138¥. Dn ISIS55 RP 6 Coe & TGR BK 7 Vv 4.5V onias a8 Ow ase 421 Can OS SECs = 7 | ar ay 3 sR 0P i) asf LI” | neein | on eal De o, Ops iTasv Bon igiss5 A Ee Rae ‘to — Toca Be al Gn 2801885 Zscoasa é a 258536 many “(S70 To wu an2sagoaa “*) a Fi l pas S| we | rn Bia is Ors ee 2 a = > 3611.6 METER ASSEMBLY (GWX-193) sere 21K261x4 1 Diya 182076 x2 Ww Parts List Part No, Symbol & Description 21K 261 D9-D12 182076 013, D14 (182473) 92-049 VR9, VR10. Semi-fixed 10k-B CEA 4R7P 35 c501—c504 ROMPS OOO R503, R504 11.7. LED ASSEMBLY (GWX-194) Deo 92 AEL-307x3 Doa,04 AEL~ 308x2 Rega 780 REO (RED) On FM (RN) 3 AUX (RED) Dy AM(GRN) Dye PHONY (RED) j | 7 Parts List Part No. ‘Symbol & Description AEL-307 D30—D32__ LED (red) AEL-308 D33, D34 LED (green) RDx%PS OOO J R501, R502 37 11.8 HEADPHONE JACK ASSEMBLY (GWX-195) Parts List Part No. Description AKN-009 Phone jack (PHONES) 11.9. FUSE ASSEMBLY (AWR-171) ae rt FU2 1A ‘i FUs1A So Fuss ay The 4 LL aor) j ame) Parts List Part No. Symbol & Description ACG-003, ct Coremic 0.01/126V AKR-013 Fuse clipADDITIONAL WPIONEER’ PSY stag (ere c/Manual AM/FM STEREO RECEIVER X=-ssSo . SX=8sS0 :: PIONEER ELECTRONIC C! ©MAY 1978 Printed in Japan <78EO1Y6HO1>MODEL SX-890/KU Although the basic features of models SX-880/KU and SX-890/KU are the same, there are a few minor changes in design. For sei CONTRAST OF MISCELLANEOUS PARTS. ing of the SX-890/KU please refer to the SX-880/KU service manual with exception of descriptions in this supplement. T Part No. Symbol | Fare Name SX-880/KU ] S$X-890/KU. : Front pane! assembly ANB-611 ANB-617 Dial panel AAG-182 | AAG-167 Packing case AHD-S6S | AHDS74 | Operating instructions ARB.272 ARB-293 | setatel MODEL SX-880 MODEL SX-880 COMES IN FOUR VERSIONS DISTINGUISHED AS FOLLOWS: 5 tS A LIEW ELA E LEIBA EEE EHE ELV ELS EEA LA EARLE ASAE ALA LASS Tre Voltage ] Remarks | : — __il KU 120V only | USA. nodal Ke 120V only | Canada modei | $ 110V, 120V, 220V and 240¥ (Switchable) |General export moclel | as siG 110V, 120V, 220V and 240V (Switchable) — | U.S. Military model | | The variations in safety standards in different countries has also necessitated variations in power supply and circuit component specifications. Furthermore, the difference in pre-emphasis charac- teristics employed by FM broadcasting stations has also meant variations in de-emphasis circuit time constant.CONTRAST OF MISCELLANEOUS PARTS ASSEMBLIES Part No Symbol Part Name —— - SX-880/KU SX-880/KC ‘SX-880/S SX-880/S/G | L. Fuse assembly AWR-A71 AWR-174 AWR-175 | SP connector assembly AWX-062 AWX-062 TRANSFORMER ] Part No. Symbol | Part Name | 8X-880/KU ‘SX-880/KC ‘Sx 880/S/G 12 Power transformer ATT 513, ATT 518 ATT S22 SWITCHES ] Part No. Symbol Part Name 7 Pi | 7 SX-880/KU SX-880/KC sx-s80/s | —_ SX-880/S/G s10 | side (OE-EMPHASiS) ASH.O16 ASH.016 ASH-019 ASH-019 sui Lever (POWER) ASK-507 ASK-086 ASK-508 ASK-508 (ASK-086) (AsK-097) |ASK-097) 12 | Plugin selector AKR-031 AKR.031 (with fuse holder) CAPACITORS (Part No. Symbol Part Name a : ‘SX-880/KU SX-880/KC SK-B80/S SX-880/S/G ci | ceramic 0.01.-—250V ACG.001 Seg 0 || ACG-001 ACG-001 Ceramic 0.01125 ACG-014 ca Ceramic 0.01250 ACG-001 ACG-001 PACKING AND FURNISHED PARTS Part Na. symbol P a ———— Mt viii sxeaoku | sxaaoee sxe805 | sxas0is/e — 1 Packing case AHD-585. AHD-566 AHD-565 | AHD-567 | Cardboard spacer F | AHB-096 | Operating instructions ARB-272 ARB-272 ARB-273 | :arezrs Fuse 58 AEK-108 | AEK-108 Fuse 2.58 AEK-102 AEK-102 Vinyl pouch (for fuses) 7 £ 11-033, E11-033RESISTOR | Part No. Symbol Part Name | SX-B80/KU, SX-BB0/KC 'SX-880/S SX-880/5/G R2 Carbon composition ACN-029 | ACN-029, i FUSES Part No. mbol Part Name - — = 7 : ‘SX-880/KU SX-880/KC SX-880/S SK B80/S/G Fur | Fuse 24 | AEK-103 AEK-103 eens AEK-103, Fuse 254 se ie AEK-102 Fuse 54, | (AEK-108) : Fu2 | Fuse 14 AEK-106 AEK-108, AEK-106 Fu | Fuse 1A AEK-106 AEK-108 ines AEK-106 Fu4 Fuse 5A (for 110, 120V) AEK-108 AEK-108 AEK-108 Fuse 2.5 (for 220, 240V) “a | (AEK-102) OTHERS Part No. Symbol Part Name SX-B80/KU SX-880/KC SX-880/S SX-880/S/G AC power cord ADG-023 ADG-011 ADG-017 ADG-017 | AC socket (AC OUTLETS} AKP-004 AKP-004 AKP.019 AKP-019 Wooden cover AMM.072 AMIM-075 ANM.072 AMM.072 Capacitor cover (for C1) AgC-294 AEC-365 AEC-294 AEC-294 Capacitor cover (for C4) : | : AEC-294 AEC:294 MODEL SX-880/KC The circuitry of the SX-880/KC is the same as the SX-880/KU. FUSE ASSEMBLY (AWR-174) The circuitry of the Fuse assembly AWR-174 is the same as the AWR-171 (for SX-880/KU), with exception of the C1 as follows: symbol Description Part No. (for AWR-171) Part No. [for AWR-174) ct Ceramic capacitor 0.01uF 125V ACG-003 AcG-014 LCo 1 SCHEMATIC DIAGRAM FOR §S, S/G TYPES SWITCHES + wo Bows TUNER Ass’y AWE-099 STEREQ — MONO o This is the basic schematic diagram, but the actual circuit, mey vary due to improvements in désign. TUNING METER Rs2 220 a T RsptOK Rew lOK Ags 1K - cele — $2076 2 Cs, vas Ree sae or a a hoz) 100k a Ras Cu S86 VR, STK 5 Ca bts 3 Ras ; : 100K KFC | beg VRe Eig wapp ee FLSk Cedt $A. 100 150 r 2 22K hsv | op com she 3 [2 sy cal ee [Hel aga | i 4 19 12 ~«1 5 $ Val sae VSO welso| Oh Oe | dy HAI197 aav [sev jaev |2ev [zev [2sv sv josv 21.8 ts faa las | 14 6 1s 4 is 12 1 2SA7268 x2 Ee 4K Sar | | Qg PAIOOI-A | path | @ 3 4 5S 6 SK | BP T | - ; 130V oS 184v [B4v |6Sv jov SW WV | iy &) ick ‘PoP as col $Re 5 aTlahke 2 15 ay : a Cas bs. < <0 ie Foy a} ey tae : i a | TamA : ' : 2 i fs pon JS a ¥ vee \ aor]. SV 10/16 Ly = ed Qnr2SC945A A b 4 8 ee Bo ees ose oc pores emmnderorinet hoes - ee emcee a 8 6 ‘TBus — Sous ~ 25ys TP RESISTORS ; FUNCTION Ss LOUDNESS Sg FM MUTING -IN OHM 1/4W 7590 TOLERANCE UNLESS OTHERWISE NOTED Ki ka M: MQ AM QEE — ON ON — OFF (F) % TOLERANCE EM PHONO Sg LOW FILTER Sp DE- EMPHASIS CAPACITORS ; AUX QFE — 15Hy Thys — SOus — 25us INgF UNLESS OTHERWISE NOTED pi: pF TAPE MONITOR S_ PROTECTION RELAY Sy, POWER 1 SQURCE - 2 OFF — ON. OFE — ON (VJ =: SIGNAL VOLTAGE AT 60W +60W BQ OUTPUT (1kH3) TAPE DUPLICATE Se-g SPEAKER A Sy LINE VOLTAGE SELECTOR V2 DC VOLTABE AT NO IKRUT SIGNAL QFE — ON QE — ON iov—120v— Z20v-240v mA OC AT NO INPUT SIGNAL Se-p SPEAKER 8 ( V) = DC VOLTAGE AT 6Ow OUTPUT MODE QEF — ONAUX 41 AF Ass'y GWK-119 ry : 25.5V Qrg, 20 Qs.¢ Dia VRa, VRe 2SCI775Ax2 2SA979x2 181555x: BASS CONTROL «= TREBLE VR CONTROL : 1 VOLUME CONTROL = Cus | C Reng Crs ego? at ake A012 TRaag20K 4 se Seog Rent Reva Lax ine J cetlgos| | Hed, Bag OI 0.035 Be 100/25 erage (zz DET se e229 . i (Rim~R nz Is) a a S200P_ oo FI 22/5) Sank C Rane C Foes Cora © giv Cm C2001 Cyo(.095 | Ge Woes) | howe GB FF8ROP os a | ; Q ar | ery 3) on 4 Ey bikin pe On, 2SC2291x2 Gs ' 7 Croa no | Ruz Raw 100K a g » Se Riv $ ——180P DOKI F Resse) 0224p I Raso D: 100K | Tg -25V tah NER Re sik Ras ) ope pe Conall tee 22K ] | 2a] Os 6380 rsp | Rome ; Mate aoe, by a anes 7 | Aaa #re Russ - 1] | 43/25 | ? 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