Manual: AX4050R SM SHERWOOD EN

3 ENIONE

AX-4050K STEREO INTEGRATED AMPLIFIER

=e CONTENTS s Safety Precautions Nee NE eds 48G4 Geneve ees eeeeasssenene dees

Specifications SaaS beNSS WH KV ge Saws Cbd ON Oe DAC a kick eu etie en eus

Circuit Description is bibSh Bibs eade Seine dope seVeneaaeehee evens

Block Diagram Sek RE RUUN Le Seis Ose ee nes ceas ode Me OaRN ee eaees

Wiring Diagram Sele GN adm sew'b b's 640 be dde bw 2 40'S eeenas <n ee

Troubleshooting WERT RT TTT Te Teer rT eT eee

Mechanical Parts List -+-:--cccccccccnccvccveccccscceceses

GS Sherwood

Exploded View(Cabinet & Chassis) ---+-+++++++-- 9 Printed Circuit Boards -:+--+---ceecee cence accacecoen: -11

Electrical Parts List ----cccccccccecsccsccccccenecrsces: -15

IC's Lead & Identifications «---+--+++++seeeeeeee eens -18 Schematic Diagrams So dse'e sine db esed seis cndeese eens 19

Transistors Lead & Identifications -+----++++++++- 23

is temas wae

_ SAFETY PRECAUTIONS

- WARNING | Before servicing this unit, familiarize yourself with the following precautions:

1. Many electrical and mechanical parts in this exposed metal parts of the cabinet, such as chassis have special safety characteristics that often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltge, wattage, etc. Replacement parts that have these special safety characteristics are identified in this manual and its supplements: electrical components having such features are identified by /A\ in the schematic diagram and the parts list.

Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards.

. Before returning the set to the customer, always do an AC leakage current check on the

terminals, screw heads, and metal overlays, to be sure the set is safe to operate danger of electrical shock. Plug the AC line cord directly into a 120 V AC outlet (120 V AC version only). (Do not use a line isolation transformer during this check.) Be sure your AC voltmeter has a sensitivity of 5000 © per volt or greater. Then connect a 1500 2 10 watt resistor, paralleled by a 0.15 uF 150 V AC capacitor, between a known good earth ground (such as a water pipe, or conduit) and the exposed metalic is parts, one at a time. Measure the AC voltage across the combination of a 1500 Q resistor and a 0.15 uF capacitor. Reverse the AC plug at the AC outlet and repeat AC voltage measurements for each exposed metalic part. Voltage measured must not exceed 0.75V RMS. This corresponds to 0.2 mA AC. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.

At 5000 Q per volt or greater sensitivity,

the reading should not exceed 0.75 V.

AC Outlet

AC Voltmeter

Good earth ground, such as

a water pipe or conduit.

0.15 «F 150 V AC,

Place the probe on each exposed metalic part.

SPECIFICATIONS

"Nominal [Limit >53 => 50

>55 |; =2>650

2.5403 | 150 + 30

RMS output power; :

both channels driven at 40 7-20 ki: feq., 0.08% THD, 8 Qo load.

both channels driven at 1 iz freq., 0.08% THD, 8 Q load

Inter Modulation distortion (60 Hz:7 my=4:1 SMPTE)

at 8 Q load, 50 W output.

Input sensitivity

at 1 i freq., 8 QO load, 50 W output.

ss

%

~PHONO input — TAPE2 MON. output

PHONO equalization RIAA RIAA

i RIAA 40 #; - 20 mz, TAPE2 MON. output

CE co tare

I

>73 >70

>95 > 90

+10+1 +1042

+10+1 +1042

>55 >50 > 53 > 50

>67

i PHONO overload at 1 id freq., 0.1% THD

Channel Separation

at input shorted CD, TAPE 1 kz

10 |Crosstolk

at 1 kd freq. input shorted

11 | Total harmonic distortion

at 40 Hz - 20 um freq.,8 Q load, 50 W output 40 fz

ae >65

General SPeEaker lOAd IMPCHANCE — ee ee reeves rev eeecesceecesccerseeeeessrenssenereesessensseeseessereeessseeenee ease seeneeseceneee nesses 80

Power consumptions seaseeroessquees uses etsieaas biti anianlelaeiowGuk ape vas ove eee wer sues ea.cv eee uses sean nen ba pacae seta weeneueee 340 W

Dimensions (WxHxD) icv aces seaweed ete ba dwseeeReu SGC ene Sc unease lede'ss wenees wave Oasis coe ase ewe bege uctabse 440x110 x 245 mm

(17-5/16 x 4-11/16 x 9-1 1/16) Weight (Net) reusabesecuidnienceunseses WAaieeis sue ule's Saleh Weg ae Va ww eaee Caebw eee debe e due de ola oon teawo twee Week@es tnes cate Suteuss se eewes 6.3 kg

| 7 a (13.9 Ibs) Power requirements:

A: 120 V 60 Hz for American/Canadian version

B: 120/220 V 60/50 Hz multi voltage version (switchable) D: 230 V 50 Hz German/Gemeral European version

E: 240 V 50 Hz for UK/Australian version

G: 220 V 50 Hz for Other Area

Notes:

1. Nominal specs represent the design specs. All units should be able to approximate these some will exceed

and some may drop slightly below these specs. Limit specs represent the absolute worst condition that still

might be considered acceptable: in no case should a unit fail to meet limit specs. :

2. This manual is based on the European (D) standard, and provides information on regional circuit modification

throught the use of alternate schematic diagram or wiring diagram, and information on regional component

variations through the use of parts lists. Design and specifications subject to change without notice.

3

CIRCUIT DESCRIPTION

Pin assignment

| RESET (IRO)BACK-UP

(NC)OPEN CLOCK

LC 7821 | DATA SAT ORBE DIGHLINK «<->

DECK PAUSE ~ VOL DOWN

FUNCTION CD LED

Biock Diagram

PAO

PAt

PA2 rot aaa A

170 PAA Lines PAS

PA6

PA?

Port PBS B PBS

t/O PB7

Liner

1

2

3 4 45

6

7

8

9

> ~

NWOMERWHoaBoenwane

BY me)

NOONE WNa=BSosanweaad

A

GND OR VDD(TCAP) OPEN OPEN(ICMP) OPEN |

PER KEY IN(LOW ACTIVE) GND - |

KEY SCAN IN1 KEY SCAN IN2 KEY SCAN IN3 KEY SCAN OUT1 KEY SCAN OUT2 PROTECTION RMC IN ‘AC CORD

OPEN MUTE PORT RELAY

KEY SCAN

BLOCK DIAGRAM

AX-4050R Model No.

~9 +8

Nive

-G-+6

QaLviqnesy

KI

Fz

+x}

cS

HOLDSTAS

BayNVAadS

dwiv AWOL

SNVol

HAMOd

qO1L95L08d

a0avul itkite? de Ligety

ssvqd

JINV1V¢a

pes AW

13t

Y~

MS ano

eS,

S “OU LNOO BrINAOs.

O ‘

AXL- LNdNi sv

A@ GNVLS

AG+

XToHivW

ABN

TII-a

SWY

802SS04Z DHAS OW

dOSN3S

NMOO /dh

H3A1HO O) 4NO

3dvL bOLOW

O)

NI advi

128297 O)

OLY

ONTHOLIMS

—©

« (O) BSHINIL

H3s4n¢

())}

onda

©)

O

1-4

WIRING DIAGRAM

Model No. : AX-4050R

00-001

POOP

0.4

NIVW

TOSNS

ee

Toeita

OCOD} 1OO0|

CO2@d3

1OSd3

O0<00T

GOOr

0 .€@

LNOwS

4dOLSTSOd

ype

ome

Ay ar

0.6 M/S HAMOd

OFecOoOoTs00r 20.8 TS YmdS

Taukt i Tred

OT cOOTrOOr

gq .€ Aal1s—

e-bTOcda

POZdo

tNOISH3A

@

AINO)

OECO0T GOOY

0.8 HOLOATAS

SFOVL DA

oie

IV

TROUBLESHOOTING

Symptom Cause and Remedy

Amplifier inoperative. e Faulty AC power cord.

Replace. |

e Defect in the power switch.

Replace. | e Broken wire in the power transformer.

Replace the power transformer.

e Blown fuse.

Replace the fuse.

e@ Defective power transformer.

Replace.

@ Short in the primary or secondary of the transformer circuitry.

Replace.

e Damaged rectifying diodes D601~D604.

Replace the defective diode(s).

e@ Short in the rectifying circuit.

Repair the short.

No sound from both channels or one channel] e Speaker switch A or B defective.

Replace the defective switch(es). |

e Defective in transistor Q311L/R, Q312L/R on the main board.

Replace the defective transistor(s). |

Headphones inoperative. e Defective resistor R401U/R.

peeeprenesimeree Pepa All the inputs inoperative. e Defective IC 1C102, 1C103, 1C201, 1IC202.

All the inputs work normally except phono. |e Defective IC101.

pienesewersnomanrercenerene Prepac, Loudness has no effect. e Defective loudness switch.

, Replace.

e Defective R201L/R, R202LU/R, C201U/R, C202U/R.

Replace

Bass control has no effect. e Variable resistor VR204 defective.

Replace.

Fuse blows when power Is turned on.

e Defective R212L/R, R213L/R, C212LU/R, C213U/R.

Replace.

Treble control has no effect. e Variable resistor VR203 defective.

Replace.

e Defective R214L/R, R215LU/R, C214U/R.

Replace.

Ref, No.

13 4 '

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40 41

Description

Packaging Materials

Cushion Poly

Film Soft PE

Poly Bag

Box Carton

Accessories

Battery 1.5 V AA(R6M)

Manua Instruction

Manual! Instruction

Manual Instruction

_ Ass'y Commander

Ass'y Commander

Cabinet & Chassis

Knob Main, ABS, Black Knob Rotary, ABS, Black

Panel Front, ABS, Black

Panel Front, ABS, Black

Badge, Inkei

Badge, Sherwood

Guide LED

Button Power, ABS, Black

Window Sensor

Jack Phone, Gold Ring

Switch Speaker Selector, Push

Button Speaker Sel., Push, ABS, Black

Bracket Speaker, Shield

Knob Function, ABS, Black

Knob Function, ABS, Black

Shield Fence, Volume

Shield Fence, Function

Button Direct Switch, ABS, Black

Switch Tact, SW2, SW3, SW4, SW5, SW6

Holder, Sensor

Switch Direct, Push

Volume BASS/TREBLE, with Nut

Volume Main, with Nut

Frame Left, SECC

Heatsink Power, Aluminum

Bracket PCB, SECC

Speaker Terminal, 8P


Jack RCA Degi-Link, 2P

Jack RCA EXT IN/OUT, 4P

Jack RCA TAPE IN/OUT, CD, 6P

Jack RCA AUX, TUNER, PHONO, 6P

Sponge Rubber

Cover Bottom, SECC

Frame Right, SECC .

Foot, Gold Ring

Foot, Gold Ring

Foot, Black

Outlet

Outlet

Chassis Back, SECC

Chassis Back, SECC

Chassis Back, SECC

Stopper Cord, ABS, Black

Stopper Cord, ABS, Black

Cord Power, ABS, Black

Cord Power, ABS, Black

Plug Jumper

Terminal Ground

Terminal Ground

Cover Top, SECC

Volume Balance with Nut

MECHANICAL PARTS LIST |

Part No. Q'ty Vertion

9722030710 9715000120 9705001550

049605172132

5518001610

9007018100

9007018101

9007018102

058581000166

058581000165

04854306401 1 048545126611 048501034611 048501034612 048535038511 048535342011

8555043110 8543062910 8555046110

4438005010 4628056410 8545126210 6165149210

048543064111 048543064112

6165150610 6163114910 8545126710 4658003710 6515014110 4628043810 3208069010 3208065110 6122631220 7502007420 6505130010 4408105510 4408105810 4438112010 4438103110 4438103210 4438108010 6715024810 6122419510 6122620340

046033102611 046033102511

6033102510 4448105510 4448103610

046102042411 046102042451 046102042491 ©

6513000310

65180001 11

4308007410

4308000430

4328204210

4408104970

4408103720

046122021331

_ 3208067810

a ee ee

+ —- = — = A)

eee” ee oe eco ee ©? ee © Se Se >) ar Sa es Se Se ZN ae 9

KS

D | PT INDO

KS

KS

KS

KS

KS, PT INDO

D

KS

KS

D,PT INDO

KS

D

PT INDO

KS

KS

Ref. No. Description PartNo. Q'ty Vertion

42 Adapter 4428300410 1 PT INDO(Only)

43 Switch, Voltage Sel., Slide 6P 4618006510 1 PT INDO(Only)

44 Switch, Voltage Sel., Slide 3P 4618006610 1 PT INDO(Only)

Screws

$1-S§ #2BTC 3x8B, Black 8109230083 5

$6-S11 #2WPTC 3x8Y, Yellow 8159230081 6

$12-S22 #2BTC 3x8B, Black 8109230083 11

$23. #2WPTC 3x8Y, Yellow 8159230081 1

$24 #2BTC 3x8B, Black 8109230083 1

$25-S28 BSAM 4x88, Black 8109440083 4

$29 #2BTC 3x8B, Black 8109230083 1

$30 #2BTC 3x6B, Black 8109230063 1

$31 #2BTC 3x6B, Black 8109230063 1

$32-S34 #2BTC 3x8B, Black 8109230083 3

$35-S40 HEX MPSW 3x12Y, Yellow 8099130121 6

$41-S46 #Z2WPTC 3x8Y, Yellow 8159230081 6

$47-S55 #2BTC 3x6B, Black 8109230063 9

$56-S59 #2BTC 3x8B, Black 8109230083 4

$60-S63 #1PT. 3x10B, Black 8119130103 4

$64-S68 #2BTC 3x8B, Black 8709230083 8

$69-S76 #1PT 3x10B, Black 8119130103 8

$77 Ground 8155000710 1 $78-S79 #2BTC 3x8B, Black 8109230083 2

$80 #2PTC 4x6Y, Yellow 8119240061 1

$81-S82 #2BTC 3x8B, Black 8109230083 2

$83-S86 BSAM 4x8B, Black 8109440083 4

$87 #Z2WPTC 3x8Y, Yellow 8159230081 1

Miscellaneous

Lead Ass'y, 5P, 450mm, From CN301 to CP301 436105453021 1

Lead Ass'y, 5F, 400mm, From CN401 to CP401 436105403061 4

Power Transformer, 220 V, 60 Hz 2828100283 1 KS

Power Transformer, 230 V, 50 Hz 2828100381 1 OD

Power Transformer, 110/220 V, 50/60 Hz 2828100391 1 PTINDO

P1 P.C.Board Main 4004100200 1

P1-1 P.C.Board Stand-by 4004100210 1

P2 P.C.Board Front 4009100200 1

P2-1 P.C.Board Speaker Selector 4009100210 1

P2-2 P.C.Board Power Switch 4009100220 14

P2-3 P.C.Board Votage Selector 4009100230 14 PT INDO(Only)

PRODUCT SAFETY NOTICE

Each precaution in this manual should be follower during servicing. Components identified with the IEC symbol 4 in the parts list and the safety can be of special significance. When replacing a component identified with A , use only the replacement parts

designated, or parts with the same ratings of resistance, wattage or voltage that are designated in the parts list in this manual. Leakage- current or resistance measurements must be made to determine that exposed parts are acceptably insulated from the supply circuit before returing the product to the customer.

- EXPLODED VIEW Model No. : AX-4050R

Cabinet & Chassis PCB VOLTAGE SELECTOR (PT, INDO ONLY)

S PCB POWER S/W

€-

< < = eal O =

10

PRINTED CIRCUIT BOARDS Model No. : AX-4050R

PC.Board Main(4004100200)

OUTLET

OUTLET2

F702(ONLY EUROPE) TL2.5A/250V

EUROPE TLhi60mA/250V

11 : 12

PC.Board Front (4009100200)

P.C.Board Voltage Selector(4009100230)

VOLTAGE SELECTOR B'D 40091002300. gti

PT INDO Version Only

13

PC.Board SPKR SEL (4009100210)

TO MAIN B°D CP201

14

Model No. : AX-4050R

P.C.Board Power S/W (4009100220)

rad cit noi cen aR

ELECTRICAL PARTS LIST

PartNo. Q'ty Vertion Ref. No. Description

Resistor/Capacitor Tolerance, D:(+ 0.5%), J:(+ 5%), K:(+ 10%), M:(4 20%), Z:(+80, -20%).

Ref. No. Description

PRODUCT SAFETY NOTICE:

Ass'y P.C.Board Main

Capacitors

C101LF/RF Ceramic Tubutar 100 pF SOV

C1O2LF/RF Ceramic Tubular 100 pF SOV

C1i03U/R Electrolytic SG 10 uF SOV

C104L/R Ceramic Tubular 100 pF SOV

C105U/R Ceramic Tubular 2200 pF 16V C106L/R Electrolytic SG 100 uF 10V

C107U/R Mytar 0.0018 uF 100V

C108U/R Mylar 0.0056 uF 100V

C109L/R Electrolytic SG 4.7 uF SOV

C110U/R Mylar 0.0056 uF 100V

C111/C112 = Electrolytic SG 47 uF 25V

C113LF/RF Ceramic Tubular 100 pF SOV



CI16LF/RF Ceramic Tubular 700 pF 5OV

Ci17LF/RF Ceramic Tubular 100 pF 50V




C121LF/RF Ceramic Tubular 100 pF 50V



~ C124U/R Electrolytic SG 47 uF 50V

C125-C128 Electrolytic SG 47 uF 25V

C129 Electrolytic SG 1 uF 50V

Ct30F/C131 Ceramic Tubular 0.1 uF SOV

C301L/R Electrolytic SG 3.3 uF SOV

C302L/R Ceramic Tubular 470 pF 50V

C303L/R Ceramic Tubular 820 pF 50V


C305U/R Electrolytic SG 10 uF SOV

C306L/R Ceramic Tubular 27 pF 5OV

C307U/R Ceramic Tubular 3 pF 50V

C308L/R Ceramic Tubular 1000 pF 5O0V


C310U/R Ceramic Tubular 220 pF SOV

C311L/R Mylar 0.047 uF 100V

C312L/R Ceramic Tubular 3 pF S0V

C313U/R Electrolytic SG 4.7 uF 50V

C314U/R Mylar 0.047 uF 100V



CS501LF Ceramic Disc 0.0047 uF 50V

C501RF Ceramic Disc 0.0047 uF SOV

C502LF Ceramic Disc 0.0047 uF SOV

C502RF Ceramic Disc 0.0047 uF SOV

CS503LF Ceramic Disc 0.0047 uF 50V

C503RF Ceramic Disc 0.0047 uF S5O0V

C601-C603 Mylar 0.1 uF 100V

cé6o4/cé60S Mylar 0.047 uF 100V

C606/C607 - Electrolytic HS 4700 uF SOV

C608-C612 Mylar 0.047 uF i100V

C613/C614 = Electrolytic SG 470 uF 25V

C615/C616 Electrolytic SG 41 uF SOV

Resistors

R101L/R Carbon Film 1 kohm 1/5 W

R102UR Carbon Film 91 kohm 1/5 W R103UR Carbon Film 914 kohm 1/5 W R104U/R Carbon Film 910 ohm 1/45 W

R105U/R Carbon Film 43 kohm 1/5 W qeeaoew oa

SFEcZeceNnNNNNNEBOFOeeeeen Feeu se FEET CeCe eceeee ee EOE CRE OO BO

054021010095

3519101935

3519101935

3479310071

3519101935

3519222915

3479310121

3679182120

3679562120

3479247971

3679562120

3479347031

3519101935

3519101935

3519101935

3519101935

3519101935

3519101935

3519101935

3519101935

3519101935

3519101935

3519470935

3479247971

3479347031

3479310971

3519104935

3479333971

3519471935

3519821935 3519200935

3479310071

3519270935

3519033935

3519102935

3519221935

3519221935

3679473120

3519033935

3479247971

3679473120

3479347121

3479333041

3579472530

3579472530

3579472530

3579472530 3579472530

3579472530

3679104120

3679473120 3419547225 3679473120

3409347149 3479310971

3069102970

3069913970

3069913970

3069911970

3069433970

2

2

2

NNN NNYN NHN NON NYO NYDNN NN ND NY =

NON AYN WA ee eee we ewe NYONNNNNNNNNNNNNN +A ANN N

NNN NY N

D(Only)

D(Only)

D(Only}

D(Only)

D(Only)

D(Only)

D(Only)

D(Only)

D(Only)

D(Only)

D(Only)

D(Only)}

D(Only)

D(Only)

D(Only)

D(Only)

D{Only)

D(Only)

D(Oniy)

15

R106U/R

R107U/R

R108L/R

R109

R110 R111L/R R112UR R113UR R114U/R R115UR R116UR R117UR R118L/R R119L/R R120L/R R121-R124 R125 R301UR R302L/R R303L/R R304U/R R305UR R306L/R R307L/R R308L/R R309L/R R310UR R311L/R R312UR R313U/R

R314U/R

R315UR

R316U/R

R317UR

R318L/R

R319L/R

R320U/R

R321U/R

R322UR

R323UR

R324U/R

R325UR

R326U/R

R327U/R R328L/R R329 R330 R331 R332 R333 R334 R335 R336L/R R337 R601 R602 R603/R604 R605 R606

L1O1LF/RF

L301U/R

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Metal Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Fiim

Carbon Film

Carbon Film

Carbon Film

Cernent

Cement

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Metal Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Metal Film

Meta! Film

Carbon Film

Carbon Film

Carbon Film

Collis

Inductor, 47 uH

Inductor, 0.5 uH

560 kohm 1/5 W

470 ohm 1/5 W

100 kohm 1/5 W

470 ohm 1/45W

470 ohm 1/5 W

kohm 1/5 W

kohm 1/5 W

kohm 1/5 W

kohm 1/5 W

kohm 1/5 W

1 kohm 1/5 W

47 kohm 1/5 W

ee ee ee

' 6.8 kohm 1/5 W.

. 3 kohm 1/5 W

470 ohm 1/5 W

400 .ohm 1/5 W

100. kohm 1/5 W

{1 kohm 1/45 W

39 kohm 1/5 W 680 ohm 1/5 W

10 kohm 1/5 W

10 kohm 1/5 W

100 kohm 1/5 W

2.2 kohm 1W

1.2 kohm 1/5 W

1.2 kohm 1/5 W

12 kohm 1/5 W

2 kohm 1/5 W

120 ohm 1/5W

22 kohm 1/5 W

120 ohm 1/5 W

2.7 kohm 1/5 W

1 kohm 1/5 W

330 ohm 1/5 W

0.27 ohm SW

0.27 ohm SW

- 39 kohm 1/5 W

330 ohm 1/5 W

45 kohm 1/5 W 4.7 kohm 1/5 W

22 ohm 1/55 W

22 ohm 1/5 W

10 ohm 1W

12 kohm 1/5 W

+ kohm 1/5 W

10 kohm 1/5 W

1.5 kohm 1/5 W

- 1 kohm 1/5 W

7.5 kohm 1/45 W

4 kohm 1/5 W

10 kohm 1/5 W

47 kohm 1/5 W

1 kohm 1/455 W

1 kohm 1/5 W

33 ohm 1W

270 ohm 1W

470 ohm 1/55 W

1 kohm 1/5 W

56 ohm 1/45 W

Products marked with A have special characteristics important to safety. If you replace of these components, read carefully

the product safety notice in the manual.


3069564970

3069471970

3069104970

- 3069471970

-3069471970

3069102970

3069102970

3069102970

3069102970

3069102970

3069102970

3069473970

3069682970

3069302970 —

3069471970

3069101970

3069104970

3069102970

3069393970

3069681970

3069103970

3069103970

3069104970

3029222470

3069122970

3069122970

3069123970

3069202970

3069121970

3069223970

3069121970

3069272970

3069102970

3069331970

3059278782

3059278782

3069393970

3069331970

3069153970

3069472970

3069220970

3069220970

3029100470

3069123970

3069102970

3069103970

3069152970

3069102970

3069752970

3069102970

3069103970

3069473970

3069102970

3069102970

3029330470

3029271470

3069471970

3069102970

3069560970

2648647082

2648001010

~enereroendeeoanwran ne a NNnNNnNBNnNNNNNNNNNNNNNNNNNNNNNNNNN A BSNNNNNNNNNN + ANN N

N) D(Only}

Ref. No.

D101

D301L/R

D302L/R

D303L/R

D304U/R

D30SL/R

D306L/R

D307

D308

D309/D3710

D601-D604

D605-D608

D609.

Q301UR Q302U/R Q303UR Q304U/R Q305UR Q306UR Q307UR Q308L/R Q309L/R Q310U/R Q311U/R Q312UR Q313U/R Q314 Q315/Q316 Q317 Q601

1C101

IC102

IC103

CP101

CP201

CN301

CN401

CP501

CP502

CP601

GND1

24

25

26

27

28

C801-C805

C806

C807

C808

R801

R802

Description

Diodes"

1N4148, Switching

Zener, UZ 27.0BSC

~1N4148, Switching

1N4148, Switching

1N4148, Switching

1N4148, Switching

1N4148, Switching

Zener, UZ 4.3BSB

Zener, UZ 7.5BSC

Zener, UZ 18.0BSC

—1N5402, Rectifier

1N4002, Rectifier

Zener, UZ 16.0BSD

Transistors

KTD1302, NPN, Silicon

KTC2240B/BKTC3200, NPN, Silicon


KTC2240B8/BKTC3200, NPN, Silicon


BKTAS49/KTA1024, PNP, Silicon

KTC2229/KTC3206, NPN, Silicon

25C4137, Bias

KSC2690, NPN, Silicon

KSA1220, PNP, Silicon

2SD718/KTD718, FET, N-CH.

2SB688/KTB688, FET, P-CH.

MPSAO6, NPN, Silicon

KTA1015Y/BKTA1266, PNP, Silicon

KTC1815Y/BKTC3198, NPN, Siticon

DTA114YS/KRA107M

KTA1015Y/BKTA1266, PNP, Silicon

ICs

KIA6259P, OP AMP.

LC7821

KIA4559P/KIA75559P, OP AMP.

Connectors

Wafer, 6P

Wafer, 4P

Wafer, 5P

Wafer, 5P

Wafer, LV, 3P

Wafer, 3P

Wafer, 8P

Miscellaneous

Plate, Ground



Jack RCA Degi-Link, 2P

Jack RCA EXT IN/OUT, 4P

Jack RCA TAPE IN/OUT, CD, 6P

Jack RCA AUX, TUNER, PHONO, 6P

End of P.C.B Main

Ass’y P.C.Board Stand-By

Capacitors

Mylar 0.047 uF 100V

Electrolytic SG 470 uF 25V

Electrolytic SG 1 uF SOV

Mylar 0.0047 uF 100V

Resistors

Metal Film 33 ohm 1W

Metal Film 10 chm 1W

qj £2 Fe ca

q

PartNo. Q'ty Vertion

2058322101

2258599115

2058322101

2058322101

2058322101

2058322101

2058322101

2258599102

2258599130

. 2258599127

2058100136

2258100135

2258599117

2208610102

2208606108

2208606108

2208606108

2208606108

2208206102

2208606107

2008622110

2008602102

2008202101

2028407109

2028107106

2208606114

2208206105

2208606104

2238006103

2208206105

2168206107

2168017132

2168206104

4428505810

4428505610

4428506910

4428506910

4428525790

4428505710

4428505510

4235007310

4408105510

4408105810

4438112010

4438103110

4438103210

4438108010

054021010096

3679473120

3409347149

3479310971

3679472120

3029330470 3029100470

~A & BN |- |? HO NHN NNN =

Ge ee ee ee ee

4

“=~ - NO -?NONNNNNNN NN DN ND HN

Ref. No.

D801-D805

Q801

CP602 CP701-1 CP702 (CP702) CP703-1

F701 (F701) F702 F703 (F703)

RLY801

GND2

P1/P2

34

C201UR C202UR C203UR C204UR C205UR C206/C207 C208U/R C209U/R C210UR C211UR C212UR C213UR C214UR C215UR C217/C218 C219UR C220U/R c701

1KS, PT iNDO.C702

1

<b hh ch

—> —- —-

D

16

C703

C704/C705

C706

C707/C708

R201L/R

R202L/R

R203U/R

R204L/R

R205L/R

R206U/R

R207/R208

R209U/R

R210L/R

Description

Diodes

1N4002, Rectifier

Transistor

MPSAOE6, NPN, Silicon

Connectors

Wafer, 4P

Lead Ass’y, LV 3P, AC, 160mm

Wafer, LV, 2P

Lead Ass'y, LV 2P, AC, 160mm

Lead Ass'y, LV 1P, AC, 140mm

Fuses

NB 150 mA, 250 V

T 160 mA, 250 V

T2.5A, 250 V

NB 2.5 A, 250 V

T2.5A, 250 V

Miscellaneous

HR-CR7, DC 12V

Plate, Ground

Pin solder

Outlet

Outlet

End of P.C.B Stand-By

Ass’'y P.C.Board Front

Capacitors

Ceramic Tubular

Mylar

Electrolytic SG

Ceramic Tubular

Ceramic Tubular

Electrotytic SG

Electrolytic SG

Electrolytic SG

Ceramic Tubular

Electrolytic SG

Mylar

Mylar

Mylar

Mylar

Electrolytic SG

Electrolytic SG

Ceramic Tubular

Electrolytic SG

Ceramic Tubular

Electrolytic

Electrolytic SG

Mylar

Electrolytic SG

Resistors

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

560

0.22

4.7

100

33 |

47

47

47

82

10

0.018

0.082

0.0039

0.018

47

47

820

10

1000

0.047

0.01

47

pF

uF

uF

pF

pF

uF

uF

uF

pF

uF

uF

uF

uF

uF

uF

uF

pF

uF

pF

uF

uF

uF

uF

50 V 63 V 50 V 50 V 50 V 25 V 50 V 50V 50 V 50 V 400 V 400 V 100 V 100 V 25V 50 V 50 V 50 V 50 V 5.5V 50 V 100 V 25 V

39 kohm 1/5 W

3.3 kohm 1/5 W

1 kohm 1/5 W

100 kohm 1/5 W

7.5 kohm 1/5 W

33 kohm 1/5 W

100 ohm 1/5 W

1 kohm 1/5 W

100 kohm 1/5 W we we & GQ Qa Qa G&S G&G Ga

a ea a a ee i ee ee


2258100135

22086061 14

4428505610

4358850314

4428525780

4358850214

4359852214

5508200930

5508301035

5508302535

5508202530

- §508302535

5528042001

4235007310

4228001410

4448105510

4448103610

054021010097

3519561935 3679224122 3479247971 3519101935 3519330935 3479347031 3479247971 3479247971 3519820935 3479310071 3679183120 3679823120 3679392120 3679183120 3479347031 3479247971 3519821935 3479310071 3519102935 3439247315 3479310971 3679103120 3479347041

3069393970

3069332970

3069102970

3069104970

3069752970

3069333970

3069101970

3069102970

3069104970

ee a ee —_ _— vA ab oh

NNN =

NNN NNN NN DN

Se —s—- NH @ @A ANN NON YN NYY NY DY NNN HN KY BD

PT INDO

KS,A,D,E,G

PT INDO

PT INDO

KS(Onlty)

D,PT INDO

D(Only)

KS(Only)

D(Onty)

-KS,A,D,E,G KS

D,PT INDO

atte. c= aT tread eglathea

Ref. No.

R211U/R

R212U/R

R213L/R

R214U/R

R215U/R

R216UR

R217/R218

R219U/R

R220U/R

R701

R702

R703

R704

R705

R706

R707

R708

R709

R710

R714

R712-R715

R716-R718

R719-R722

R723/R724

R725-R728

R729

R730

0701

0702

D703/D704

D705/D706

LED2

“LED3-LED6

Q701

Q702

Q703-Q707

Q708/Q709

Q710/Q711

IC201AC202

IC701

CN101 CN201 CN601 CN602 CN603(1/2)

SENSOR

16

17

19

20

44

Description

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Fiim

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Carbon Film

Diodes

Zener, UZ 5.18S8

Zener, UZ 4.3BSB

1N41438, Switching

Zener, UZ 5.1BSB

LEDs

SLR-34RCN49, Red

SLR-34YCN49, Yellow

Transistors

OTC114Y

100 kohm 1/5 W

18 kohm 1/5 W

3.9 kohm 1/5 W

1 kohm 1/5 W.

560 ohm 1/5W

1Mohm 1/5 W

100 ohm 1/5 W

100 ohm 1/45 W

1 kohm 1/5 W

4 kohm 1/5 W

10 kohm 1/5 W

100 kohm 1/5 W

330 ohm 1/5 W

1 kohm 1/5 W

22 kohm 1/5 W

220 kohm 1/5 W

100 kohm 1/5 W

10 kohm 1/5 W

100 kohm 1/5 W

1 kohm 1/5 W

10 kohmt/5W .

330 kohm 1/5 W

1 kohm 1/5 W

4.7 kohm 1/5 W

1 kohm 1/5 W

10 kohm 1/5 W

4 Mohm1/5 W

KTC1815Y/BKTC3198, NPN, Silicon

DTC114Y

MPSAO6Y, NPN, Silicon

MPSAS6Y, PNP, Silicon

ics

KIA4559P/KIA75559P, OP AMP.

LSC412329P, DWP115,

Connectors

Lead Ass'y, 6P, 100mm


‘Lead Ass'y, 8P, 100mm


CPU

ceoewewuouonnuncriuweuowockretnweeoewenwee Ge & & & &

Lead Ass'y, 4P, 180mm, A pair of CN603(2/2)

Miscelianeous

Remote Sensor TFMS-53808

Switch Tact, SW2, SW3, SW4, SWS, SW6

Holder, Sensor

Volume BASS/TREBLE

Volume Main, with Nut

, with Nut

Volume Balance with Nut

End of P.C.B Front

PartNo. Q'ty Vertion

3069104970 3069183970 3069392970 3069102970 3069561970 3069105970 3069101970 3069101970 3069102970 3069102970 3069103970 3069104970 3069331970 3069102970 3069223970 3069224970 3069104970 3069103970 3069104970 3069102970 3069103970 3069334970 3069102970 3069472970 3069102970 3069103970 3069105970

2258599103

2258599102

2058322101

2258599103

2381215704

2384521501

2208622106

2208606104

2208622106

2208606114

2208206113

2168206104

2138309172

436106103321

436104203321

436108103321

436104283321

436404183221

2408005003 4658003710 6515014110 3208069010 3208065110 3208067810

sa RNP W Ee BABB eee ne tae sNNNNNNN DN NY

NN OF | oN =

ee ee ee

—~ -= HM ~*~ Th —

Ref. No. Description PartNo. Q'ty Vertlon

Ass'y P.C.Board Power Switch

LED

LED1 SLR-34RCN49Q, Red 2381215704 1

Connector

CN603(2/2} A pair of CN603(1/2) 1

Miscellaneous

16 Switch Tact, SW1 4658003710 1

End of P.C.B Power Switch

Ass'y P.C.Board Speaker Selector

Capacitors

C401LF/RF Ceramic Tubular 560 pF SOV J 3519561935 2 D({Only)

Resistors

R401L/R Metai Film

R402LF/RF Carbon Film

470 ohm 1W J

15 kohm [SW J

3029471470 2 3069153970 2 D(Only)

Connectors

CP301 Wafer, 5P, Angle - 4428513450 1

CP401 Wafer, 5P, Angle 4428513450 1

Miscellaneous

8 Jack Phone, Gold Ring 4438005010 1

9 Switch Speaker Selector, Push 4628056410 2

End of P.C.B Speaker Selector

Ass'y P.C.Board Voltage Selector PT INDO(Only)

Fuses

F901 T 2.5 A, 250 V 5508302535 1

F902 T4A, 250 V 5508302935 1

. Connectors

CP701-2 Wafer, LV, 3P 4428525790 1

CP703-2 Wafer, LV, 1P 4428525770 1

CP704 Wafer, LV, 2P 4428525780 1

CP705 Wafer, LV, 4P 4428525800 1

Miscellaneous

P3 Pin Solder 4428001410 1

P4 Pin Solder 4428001410 1

42 Adapter 4428300410 4

43 Switch, Voltage Sel., Slide 6P 4618006510 1

44 Switch, Voltage Sel., Slide 3P 4618006610 1

End of P.C.B Voltage Selector

PRODUCT SAFETY NOTICE

Each precaution in this manual should be follower during servicing. Components identified with the IEC symbol A\ in the parts list and the safety can be of specia! significance. When replacing a component identified with A , use only the replacement parts designated, or parts with the same ratings of resistance, wattage or voltage that are designated in the parts list in this manual. Leakage- current or resistance measurements must be made to determine that exposed parts are acceptably insulated from the supply circuit before returing the product to the customer.

17

3 tay seeedttbetlabe gd

IC'S LEAD IDENTIFICATIONS & INTERNAL DIAGRAM

GD78XX : 1C601, IC801

CURRENT THERMAL SHUT LIMITER

START-UP CIRCUIT

GNO

LC7821 : 1C102

a. ey 30 Li © [2 8 =~ 29 | oO Rl. 2 gg es > L3. © > | tT 2 > Fa is rs eet 2 O Ra

LCOM?1 ©

- i

L — | ORS

e La ‘ Cr sal 2 R COMI L6 0 ar =n ee she

LCOM2 © e a >

L? o—— Th Bs}, >< 22 ee

: oe a L8 | i vee PITT) fs I > RB

LCOM3 o— : THT ma

VDD pe |

eon ns

NE o————_——___——_ VEE | ~8 5 3 <1 : <0 DATA

RES © f> 2 ao

: i 5 | 15 S o CE

| @

KIA7559P/KIA4559P KIA6259P : 1C101, 1C103 1C201, IC201

18

i ee eer

SCHEMATIC DIAGRAM I Model No. : AX-4050R

MAIN/ST-BY | A

G G

a L creo1

L1O{LF R1LO1L 1K C103L 10.50 pate FROM FRONT BD CN201 a '@. Ph i) i, ‘

47UH x a a ’

C101LF—-cioar—ol) miox|)2— & LOOP 100P | gikYa fi

ne gi § : r i = C130F ns G R10GL SS0K l j

O. 4U — ‘ q Aioa. _ciom. 1OSL 43% oC 485—m : : L = = 4 910 = | 100/10] cion | Gi9m. MAIN B CN301

101AF R1O1A 1K C103R 10/50 0.0018-M IC104 4004100200 SSP eee : R dd. KIAG259P RA0tL CaOiL 401 4W)

7 a : al <4 8 nio7R 41992 7 1K 3. 3/50 S C101RF+C 10earF+ oO RI03A1 16 if a h a 6

1oop| = 100P | & au 470 @301L A ° '" R1i08R 100K KT01302 gk c30aL A : —}- ‘ : ig o 1) are,

oO TO SPKR SEL B’D CP401 C1i3iF qo. 41U bern 0. 06448

910

A AALAL 1K . 0. 0018-M LG I

[ c1amr +C1i1ar 100P pee -15V

DTA1L114YS +3. 54v

TUNER

le: Ay RitiA ik +15. 2V [== ; :

R3S07R 2. 2k(1W)

- Ries

dee 1001 Ri24

|| 100 RBO4R 10K oso1n Tfiok maosA : 27Vv~-B8B

AIZaR | AK

KTD1302 ry

R30 1iR SS/e3018 4K 3. 2.’S0 Ld !

6.8K C123. 47P C3028 470P l Pa0eR

IC103 30K (FN KIA4559P © exp

47K RL20R OO 470 1REQS2 1REQ52

| PEQB2 sREBS2 Ri1eR L__ +46. SV —

C506 |, 6. BK C1iasA 47P 4700/

| GNO1 4

CP501

FROM MAIN TRANS. FROM MAIN TRANS.

—46. 6V

C607

4700/50 KTC1B15Y

a i ee > = ; :

MEE: 7.5K rosof ka7e5 Bee 0. SIE E92, ms +15, 2V 1 33(1w) 1N4002 1

ee oll P07 gee Hi —trsey 470/10 +26. BV

:

Dy @ -F- -|- AS c613 4 :

na 7S C) 1 oT REo3 470725 f

cdl as : Bork

O} J] Ww B18 is 5/9] le |o CT) HirFidqs4 0/0)”

KTC1B8157Y

> 6 6 “a

|

— F

KAA AAA ASA KOA AASA ]COCOOCOO &80866¢

CP6O1 CP101 FROM FRONT B’' OD CP101

FROM FRONT B'D CN6O1 1RBSde sREBEe Axpitster iN4d 2

NOTES ; i1.Resistor velives are indicated in

onme unilese otherwise enecified

(K=1- 000 M=1i-000:- 000 i

@2-Ceapscitor valves are indiceted in microfareces unilesa otherwise

specified.

CALITION Safety precaution to be followed

Ouring servicing

11Sance tnmnose naertsa marked with ZN

ere critical parts for sefety-.-

vee only the one described in the perts list

CPvO1i-141 GseBE RL16R ik

Ld

ONLY MULTI-VOLTAGE AREA

| B-GROLP } CP703B-1

J802

DIGI-LItK © _Cp2-micro-micrefarades |

TLe. SA’250V

TL2. SA’250V UNSWITCHED 4

QUTLET ' !

CcPE02

FROM FRONT 8° 0 CN6&O2

CP701-1

2/1Before returning the set to the

Customer make appropriate leakage current or resistance messurements

to determine the exposeo parts are ocroperly ansulated from the supply circuit. “FROM MAIN TAANS.

19° | | | 20

RELA’ POWER FRONT/SPKR SEL/VOLTAGE SELECTOR ee

FRONT B'D 4009100200 0704 5SVi-B A703 100K

Q7O1

SCHEMATIC DIAGRAM II

CN20 t TO MAIN B’O CP2G1

LGGA Bte- FROM MAIN B’ OD CP101

0708

5V1-B 5v1-8 0705

esa Model No. : AX-4050R

DTC114Y A217 100

= ieee Reis 100 Bass TREBLE

100K (C) 400K (C) ois aie vazo4*, 7 vR203

j = j 1 \ /50

be ee CAL1L 10/50 co 4 REOSL capa. vreo1 | ; Retou| ! —}—4 fh SOK(B) | 1 400K ' ye od ! a. 4.7780

eo = ci =a

100K(mN) BESS

'

1 BABY

$2 8% Q705

DTC114Y

i ee

41K C2Z06R ae 0. 8384;

Q703 DTC114Y

Q704 DTC114Y

Q70e OTC114Y

Q707 DTC114v

¥ Oo

| .

ha Snes ote aoe oe 6 By) Y*) C211R 10/50 a Ly NS t+ 8000008006

Fur : {

{ | : oe) = |

oO =] +5. 3V

1N4148 1/50

= so i Ne 7. R739] | 0. 8b, 6? é38-.

: e i +15. av

ee | TUNER yy PHONE

C1i815Y

i) ,

f) “ 4708 ‘

1N4148 Cn)

A7OB 22k

R3R> aa | 330K | aa0K| | — 716 R717 A71iB

AAAAAA/ OOOO)

Ww 6 % % tw om CN&O 1 Cate ae 1 TO MAIN BD CP601 erFiugag &

Of Oo FE H Wo o oO EO H

4 a)

fs = O i

| CP301 ;

VOLTAGE SELECTOAR1 VOLTAGE SELECTOR2

cP404 FROM MAIN B’ 0 CN401 CP703-2

FROM ST-BY BO

CP703-1

LIVE F901

TL2. 5SA“250V

SPKR SEL B'D 4009100210

NEUTRAL

| NOTES »-Resistor velves ere indicated in

onme unlese otherwise specified

(K=1.000 M=i-. 006-000 |!

-Capecitor velues ere indiceted microfaradses unless otnerwiase specified.

| CALITION ape EBRBeEe ea Ee Sees eB eeneweanwnaeaeeseens es ees Beene ee eRe Se ee ee eee ee

oupine Geeuvene ot | VOLTAGE SELECTOR B'D 4009100230

CP'705 cP704 CP70 i-a

FROM MAIN TRANS. FROM ST-BY FROM ST-BY 8B’ D

B’' D CP702e CP70 1-4 [pemicro-m icrofaredes])

q@eunaewwewewewe esses eee ewe eee eee meee em we eee ee eee ee eT ee ee ee ee Ss SS

11Since those parts merkes with ZN | ‘ere criticel parte for sefety: USe only the one described in the . 4 perts list ! —— Signal Line

2)18efore returning the eet to the - customer make appropriate leakage

to determine the exposed pertes

ere oroperly insulated from tne Supply circuit.

22

TRANSISTORS LEAD IDENTIFICATION

KTB688/2SB688 KTD7 18/2SD718

KSC2690 KSA1220_

25C4137

KTA1015/KTA1266 KTC1815/KTC3198 KTC2240/KTC3200 KTD1302

KTC114YS KTA114YS_

KTA949/KTA1024 KTC2229/KTC3206

MPSA06 MPSA56

EBC

B-—BASE

C—COLLECTOR

F—-EMITTER

23

Manual: AX4050R SM SHERWOOD EN

Documents

Transcript of Manual: AX4050R SM SHERWOOD EN