Pioneer SX-3800 manual Precautions, C65,C66,C70,C71 c63,C64 C303,c304, S3,s4, Arc-o72

Page 42

Part No.

CKDYF103250

CQMA153K50 coMA 473J50

cosH 331J50 cosH 152J50 CEANLR22M50

Symbol & Description

u c o ? 1 4 1

c53

v o o

c55, C57

n l n a

Part No,

A T F - 1 0 6 r

ATF,OB9

A T F . 1 O 5

ATF.O38

S E M I C O N D U C T O R S

Symbol & Description

F 1 - F 3

F M c e r a m i cf i t t e r

F 4 , F S

F M l o w - p a s sfi t t e r

F 6

A M c e r a m i cf i r r e r

F 7

A M 4 5 5 k H z f i l t e r

t

I

t

CEANLOlOM50

CEANL2R2M50

coMA 153K 50 CEAOlOMsOL CEA3R3M50L CEA4R7M50L CEA lOOMsOL

CEA22OM25L CEA47OM1OL c E A 1 0 1 Mt 0 L C E Al O I M 2 5 L C E A2 2 1 M1 6 L

C E A3 3 1 M1 O L C E A4 7 1 M1 6 L CEA47OM25L

c65,C66,C70,C71 c63,C64

c303,c304

? 1 4

c79,CgB

c97 c33,C43,C69

cB0 c30,c76,c77 c36,CB3,C84 c12

c54

c51, c85 c3,c4, c78

PartNo.

Symbol & Description

35K73

o 1

2SK34

02

2SK168

03, o15

zSC1906

o4

2SA535-A

 

HA120'l

06, 07, 09

NJM4558DV

O8

PA3007-A

0 1 0

PA4006-A

0 1 1

HA',l197

o12

zSC1919

n r a

2SC2575

014,016 - 021 ,Q24*A26

{2SC945A)

 

2SA1100

o22,423, O2B - O35

(25A733A)

 

T

t t t t

Nole: llhen orderingresrsfom,conuertthe

resistanceualueinto codeform, and

R E S I S T O R Sthen rewrite tlzepart no. asbefore.

H A 12 0 10

 

MZ-061

D l , 0 2

;

PartNo.

RD%PMNNN J

RD%PMt]NrJJ

RD/1PMLINNJ

ij RD%PMFnnn J RN%SOnnlrn F

c92-048

c92-049 ACP-056 ACP-055 ACV - 18'l

A C T - 0 2 1

Symbol & Description

R 1 - R 1 1 R, r 3 ,R 1 5 - F 1 9 , R 2 1

, R 2 2 ,

R24-n29, R31-R45

R47 - R53,R56 - R59,R61,R63 .R65, R 6 7 - R 9 9 ,F 1 0 1 - R 1 2 5

R 1 2 8 * 8 1 4 0R. 3 0 1 - R 3 1 6

F I 1 ? R ' N R 4 6 , R 1 2 6

R 3 0

V R 1 S e m i - f i x e d4 7 k

V R 2 S e m i - f i x e d1 0 k

V R 4 Semi - fixed 22k

V R 5 S e m i J i x e d6 . B k

V R 6 V a r i a b l e1 0 0 k ( V O L U M E )

V R 7 V a r i a b l e1 M ( B A L A N C E )

(wz - 0611

 

 

t D t 5 3 5

D 3 ,D s * D 1 7

{'152473','

 

 

1SV69-03

D 1 8

 

O T H E R S

 

 

Part No .

Symbol & Description

A S X - 1 3 0

s 1 ,s 2

R e m o t e l e v e rs w r t c h( T A o E)

ASK - r52

s3,s4

L e v e rs w i t c h ( M U T I N G ,

A K A . O 1 3

 

L O U D N E S S )

 

T e r m i n a {l A N T E N N A }

AKB - 063

 

T e r m i n a l( T A P E )

Precautions

t The FIqIceramic filters (ATF.106, symbol nos.Ft - F'3)

t t

;

il

t

T R A N S F O R M E RCSO, I L SA N D F I L T E B S

in the tuner assembly (GWE.j3J) hos been selectedon

P a r t N o .

ATE.OOS ATE.045 ATB-063 ATB-069

ATC"097

T24"O28

Arc-o72

9vlrrl& Description

T 1

F M I F T

T2

FM DET transformer

I J

AM OSCcoil

T4

A M l F c o i l

L2

F M a n t e n n ac o i l

L3, L7, L 9 - L 1 3 , L 1 5

L8

R F c o i l

F M O S Cc o i l

the basisof their respective IF offset ualues (the degree

of displacement from the center lF). Filters are graded.

into 3 ranhs, these being identified b5'color coding nt

the top (red, orange, and. blue). When replacing filters,

always use filterc of the same color code.

When placing arder$ for these filters, designate the grad,e (color) as well as the part no.

tThe crystal resonator(ASS - 012,syntbol no . Xl) in lhe detector assembly (G\VX-463) is auailablein 3 different types coffespanding to the IF offset ualues of the Ittrf ceramic filters (ATF-L06, symbol nos.F.l -F3)in the tuner assembly (GWE-133). These may be identified by the different colored dots (red, blue, orange) at the head. When replacing crystal resonators,chech lhat the color is some as the ceramic filters.

t

t

il tI

4 A

;

Image 42
Contents Sefvice nual FM Ouartz Locked SixSTEREORECEIVER-gaooContents H H T H HFM TunerSection P E C T F T C a T I O N STo 20000Hertzt02dB Or, iori ,ro i ,ou OdBMiscellaneous Eix-3El00ISemiconductors FurnishedPartsGnlcHrNEss @sELEcroR Tront PanelfacilitiesSpERrERswtrcHEs @ bunnrz LocKEDtNDtcAToR@ volunnEcoNTRoL GRl-Rr\cE @coNTRoL@f--q-*@ Block Diagram1l , or LhTjl 68-llFig 1 Choppertype switchingcircuit Switchins,is.rc-1q/ t h LCompositesignal CircuitdescriptionsSx-gaoo Mode Fig 5 Blockdiagramof PD5009G 6 D 1 D 5 t i m e d i v i s i o np u l s es i g n a l s B l e1Signal lndicatorCircuit Fig .4 7 SIGNALindicatordrivecircuitFig 9 Poweramplifier More,becanselhere is no time clonstantin the NFB Excellent high frequency characteristicscomparaBle lo those of a small-signaltransistor.Further Circuit ir-rthe lorv-frecluencyregion, amplificationFig .4 12 Power indicatorcircuit O W E R N D I C a T O RC I R C U I TOverloadDetector Deenergized, thus causing the output circuit toBecome de-energized,thus causing the ourpur Overload detector circuit incorporatesDisassembly Front panel Bonnet case Bottom plateRearPanel Parts LocattonFront View with PanelRemoved AKE.O54Ia.i TUNERAssy GWE-133+I t i t Rrprro&ffi$ll1rl + +D16l IlIlINDICATORAssy AWV-OO9 E0UALIZERAssy AWM-227LiTtFTTTTTTT- - 1 * l l l l t t Rtrf TiiI t TONECONTROLAssyE i t t l i 6 Y Tttt,,.,i%hi*i*U# x r , o 8lr rorAL2oowMAx AI I h-l# *n LmfiiOl!6 - j,r-l*-,,-s-l = # . = - r?tA tlDzrT 4u- @ *ronce Nffi $r-ffir3lilli FfTJ-ir S5flsIFuse64 BottomViewTop View GWEI a L C O R D S T R I N G I N G N i n gd r u m Dialshaft Startingpoint DialpointerDial pointer Adjustments ArrrrTlGK 6 To FM300n ANT terminals MPXsignalgeneratorConnectSIGNALmeteror DC voltmeter AC voltmeter Distortionmeter R E Ct e r m i n a lR a n t e n n ac o i l AM signalgenerator AC voltmeter To RECterminalTo AM ANT 1kfl resistor TerminalFis .8 LvR5ll AFosc,lt ,-d + u tFJaJtuL6 \ ,v\ Te ,t . 1Fig .8 FL indicatorassemblyVR2*€ @vnr PD5009ExteriorComponents VBZ3OPOSOFMCAAB.24O AcN lrs Interior ComponentsRo. AEK-rog 25 e6Ae*-\ 228? T SX.SClOl Fr-r rHeat Sink Block H 1 3Illl\ N n n n tUsr E6nmr TunerAssemblyGWEAN,,4Sa NrrezZS3,s4 PrecautionsC65,C66,C70,C71 c63,C64 C303,c304 Arc-o72SwitchAssemblyGWS-226 ToneControlAssemblyt G W G 1 4AWS-146 SwitchAssembly Lynlgt9 9*ie9Ncru-rat PowerAmplifierAssemblyGWH-139Nr21, R12z PowerSupplyAssemblyGWR-j22 9yqlglt o*lelglFL IndicatorAssemblyAWV-009 SpeakersTerminalAssemblytGWS-222SwitchAssemblytGWS-223 AR8-355 A C K I N GADH AHD 7s5FM Ouartz Locked StereoreceiverP E C F I C a T I O N S With exceptionof thissupplementsContrastof Miscellaneous Parts Srs$ r u r SCHEMATICDIAGRAM,P.C. Board Patternsand IBi ihl*crRd.*dr q l Parts List Il,*3Lr-l--.q.iliffi 3il3i!11UJl--J RtmlSX-3EtCO/si/GirS 11ffiflCl, c2 €tX-ggtOO/gi/GlrsAWS-148 C3,c4

SX-3800 specifications

The Pioneer SX-3800 is a classic stereo receiver that emerged in the late 1970s, embodying the high-fidelity audio aspirations of its time. As part of Pioneer’s widely respected SX series, the SX-3800 is hailed for its exceptional sound quality, robust construction, and an array of features that cater to both audiophiles and casual listeners alike.

One of the SX-3800's standout characteristics is its power output. It delivers a solid 80 watts per channel into 8 ohms, making it capable of driving a variety of speaker systems with ease. This ensures a dynamic audio experience, with clear highs, rich midrange, and deep bass. The receiver also exhibits low total harmonic distortion (THD) ratings, which means the sound produced is clean and faithful to the original recording.

The SX-3800 is equipped with a high-quality AM/FM tuner, which is known for its excellent sensitivity and selectivity. Featuring a large analog dial, it allows users to effortlessly dial into their favorite stations while the signal strength meter helps in fine-tuning the reception. This tuner is complemented by Pioneer’s proprietary Auto-Seek tuning function, making it easier for users to find and lock onto stations.

In terms of connectivity, the SX-3800 comes with several inputs and outputs, including phono, tape, aux, and multiple speaker outputs, offering flexibility for various audio setups. Additionally, the built-in phono preamp ensures that vinyl lovers can connect their turntables with ease, preserving the rich detail and warmth that analog sources are known for.

Another technological highlight of the SX-3800 is its inclusion of a loudness control feature, which allows users to enhance the low and high frequencies at lower volume levels. This feature is particularly useful for late-night listening or in quieter environments where detail is essential but loudness is not an option.

With its solid construction, vintage aesthetics, and a beautiful wood finish, the Pioneer SX-3800 not only performs well but also adds a classic touch to any audio setup. Its blend of features, performance, and timeless design continues to make it a desirable component in the world of vintage audio equipment. Collectors and enthusiasts appreciate the SX-3800 not just for its sound quality but also for its enduring legacy in the rich history of audio technology.