Pioneer SX-3800 manual Interior Components, Ro. AEK-rog, AcN lrs, 25 e6

Page 36

B O O

Interior Components

NOfES:

r Ports witltout part number cannot be supplied.

t The A marh found on some component parts indicatee safetl factor of the part. I'herefore, when replacing, be sure designation.

I

the importance of the to use parts of identical

Key No.

Part No.

Doscripiion

Key No,

Part No.

Elescription

1. VBZ30P060FMC

2.

3.

4.

5.

6. PMZ30P060FMC

7.

8.

9.

A ro. AEK-rog

11, VBZ4OPOBOFMC 1? . AKR - O32

13. AEL-O65

1 4 .

15 . wA92F140U100

16, NKgOFUC

1 7 .

't8 . GWK - l46 li '19. ACG-001

n20. ASK-507

21.GWS-223

22.GWS-224

23. AEL-047

24.

25. GWG - I41

26.

27.ASX-128

28.AEL-069

29. AEL-095

30.Gws-226

31.

32.

33. BBT3OPOSOFZK

34. PMT3OPO6OFZK

35.

J O -

37. ABN-050

38. A8E-001

39. 8BT30P060FZK

40.

41t AEL{29

42. AKK{05

1,43 . AcN - lrs

M.AWV{09 45. AEL-075

Pulley assembly

Pulley assembly {smalll

Dial scale holder L

Side plate

Dial panel assembly

Smoother

Dial pointer

Fuse 6A

Fuse holder

Lamp with wire (BV, 50mA) Side frame L

Shaft cover A

Headphones jack assembly Ceramic capacitor {0.01 /25OVl Lever switch (POWERI

Switch assembly Switch assembly

Lamp with wire (BV, SOmA) Remote wire

Tone control assembly

Remote wire Remote lever switch

Lamp with wire (8V, 50mAl Lamp with wire (8V, 50mA) Switch assembly

Panel frame

Spacer A

Spacer B

Mounting plate

Union nut

lnternal toothed lock washer

Acrylic board

Lamp lwedge type 8V, 300mA! Lamp sockst

Resistor (4.7/lOtfVl

F L indicator assemblv Lamp with wire (8V, 50mAl

46.

 

Lamp holder

47.

 

Dial scale holder R

48.

 

Capacitor holder

49.

 

Ground terminal 2P

50.

 

Center channel

51 . GWE - 133

Tuner assembly

52.

 

Shield plate

53.

 

Center frame

,.\ 54.

4TT-677

Power transformer

A 55.

AKP-042

AC socket {AC OUTLETS}

56.

AXA-264

Dial shalt assembly

57 .

 

Transformer holder

58.

 

Tuning drum assembly

59.

 

Ground frame

60.

 

Side frame (Rl

61.

 

Raer panel

62.GWS-222Speakerterminal assembly

A 63 .

AEK - 102

Fuse 2 . 5A

t'64 .

AEK - 106

F u s e l A

65.

 

Heat sink block

66.

 

Heat sink holder

67 .

 

Rod

68.

AEC-327

Strain reliel

69.

MTX3OPlOOFZK

 

70.

8BZ30POB0FZK

 

71 .

ABA - 176

Screw 3x1 Ox9R

t:,72 .

ADG - 023

AC power cord

73.

AT8-624

Bar - antennaassembly

7 4 .

 

T e r m i n a l ( G N D I

75.

GWS-226

Switch assembly

76.

AK8-076

Terminal (AM STEREO OUTI

77 .

 

EO holder A

78.

AWM-227

Equalizerassembly

79.

 

EO holder B

80.

wA35F100N080

 

8't.

AKM-004

Jumper plug

25e6

Image 36
Contents Sefvice nual FM Ouartz Locked SixSTEREORECEIVER-gaooContents H H T H HP E C T F T C a T I O N S To 20000Hertzt02dB Or, iori ,ro i ,ouFM TunerSection OdBEix-3El00I SemiconductorsMiscellaneous FurnishedPartsTront Panelfacilities SpERrERswtrcHEsGnlcHrNEss @sELEcroR @ bunnrz LocKEDtNDtcAToR@ volunnEcoNTRoL GRl-Rr\cE @coNTRoLBlock Diagram 1l , or@f--q-*@ LhTjl 68-llSwitchins,is.rc-1q/ t h L CompositesignalFig 1 Choppertype switchingcircuit CircuitdescriptionsSx-gaoo Fig 5 Blockdiagramof PD5009 G 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 sMode B l e1Signal lndicatorCircuit Fig .4 7 SIGNALindicatordrivecircuitFig 9 Poweramplifier Excellent high frequency characteristicscompara Ble lo those of a small-signaltransistor.FurtherMore,becanselhere is no time clonstantin the NFB 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 TDeenergized, thus causing the output circuit to Become de-energized,thus causing the ourpurOverloadDetector Overload detector circuit incorporatesDisassembly Front panel Bonnet case Bottom plateParts Locatton Front View with PanelRemovedRearPanel AKE.O54TUNERAssy GWE-133 +I t i tIa.i Rrprro&ffi+ + D16l$ll1rl IlIlINDICATORAssy AWV-OO9 E0UALIZERAssy AWM-227LiTtFTTTTTTT- - 1 * l l l l t t Tii I tRtrf TONECONTROLAssyE i t t l i 6 Y Tttt,,.,i%hi*i*U# x r , o AI I h-l # *n8lr rorAL2oowMAx LmfiiOl!6 - j,r-l*-,,-s-l = # . = - r?tA tlDzrT 4u- @ *ronce Nffi $r-ffir3lilli FfTJ-ir S5flsBottomView Top ViewIFuse64 GWEI a L C O R D S T R I N G I N G N i n gd r u m Dialshaft Startingpoint DialpointerDial pointer Adjustments ArrrrTlGK 6 MPXsignalgenerator ConnectSIGNALmeteror DC voltmeterTo FM300n ANT terminals AC voltmeter Distortionmeter R E Ct e r m i n a lR a n t e n n ac o i l AM signalgenerator AC voltmeter To RECterminalTo AM ANT 1kfl resistor TerminalFis .8 AFosc,lt ,-d + u t FJaJtuL6LvR5ll \ ,v\ Te ,t . 1FL indicatorassembly VR2*€ @vnrFig .8 PD5009ExteriorComponents VBZ3OPOSOFMCAAB.24O Interior Components Ro. AEK-rogAcN lrs 25 e6Ae*-\ 228? T SX.SClOl Fr-r rHeat Sink Block H 1 3Illl\ N n n n tUsr TunerAssemblyGWE AN,,4SaE6nmr NrrezZPrecautions C65,C66,C70,C71 c63,C64 C303,c304S3,s4 Arc-o72ToneControlAssemblyt G W G 1 4 AWS-146 SwitchAssemblySwitchAssemblyGWS-226 Lynlgt9 9*ie9PowerAmplifierAssemblyGWH-139 Nr21, R12z PowerSupplyAssemblyGWR-j22Ncru-rat 9yqlglt o*lelglFL IndicatorAssemblyAWV-009 SpeakersTerminalAssemblytGWS-222SwitchAssemblytGWS-223 A C K I N G ADHAR8-355 AHD 7s5Stereoreceiver P E C F I C a T I O N SFM Ouartz Locked With exceptionof thissupplementsContrastof Miscellaneous Parts Srs$ r u r SCHEMATICDIAGRAM,P.C. Board Patternsand IBi ihl*crRd.*dr q l Parts List Il,*3Lr-l--.q.iliffi 3il3i!11Rtml SX-3EtCO/si/GirSUJl--J 11ffifl€tX-ggtOO/gi/Glrs AWS-148Cl, c2 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.