Yamaha AV-80-Y Service Manual

-----.:-------

STEREO AMPLIFIER

AV-80Y

SERVICE MANUAL

r

H model only

0-

-

····

. . . .

• • • •

o • • •

I • • •

- - - - -

WI

................

This manual has been provided for the useofauthorized YAMAlIA Retailers and their It

has been assumed that basic service procedures inheranttothe industry, and more specifically YAMAHA

Products, are already known and understood by the users, and have therefore not

WARNING:

':

I-

0I-

.-

IMPORTANT:

The data provided is believed to engineering, and service departments Modifications are, therefore, inevitable and specifications are subject retrofit. Should any discrepancy appear to exist, please contact

WARNING:

IMPORTANT:

Failuretofollow appropriate service and safety procedures when servicing this product may result in personal injury, destruction product toperform as specified. For these reasons, we advise that appointed service rq>resentative.

The presentation or saleofthis manualtoany individual or finn does not constitute authorization, certification or recognition establish a principle-agent relationshipofany form.

Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated gauge black Tum apply power

IMPORTANT NOTICE

of

expensive components and failureofthe

all sezvice

required

should be performedbyan authorized YAMAlIA Retailer or the

of

any applicable technical capabilities,

be

accurate and applicable to the unites) indicated on the cover. The reserch,

of

YAMAlIA are continually striving to improve YAMAlIA products.

by

wires

the unit OFF during disassembly and parts replacement. Recheck all wolk before you

connecttothis buss).

to

the unit.

grounding yourselftothe ground buss in the unit (heavy

to

change without noticeorobligatim to

the

distributor's Service Division.

o

senice

personnel.

been restated.

all

YAMAlIA product owners

or

•

=

CONTENTS

TO SERVICE PERSONNEL 1 REAR PANELS

SPECiFiCATIONS ....•.•..•.......................•...•.......•...•.•..•...•3

BLOCK DIAGRAM •......•....•.•.•...........•.....•...•....•.........

INTERNAL VIEW .....•.•....................................................6

DISASSEMBLY PROCEDURES

ADJUSTMENTS .••.•..........•........................•.•.....•.••.•.....•..7

1

003801

1-2

4-5

6-7

PRINTED CIRCUIT BOARD

INTERCONNECT WIRING DIAGRAM 15

~·COM

WAVEFORM SCHEMATIC DIAGRAM 18-19

PARTS LIST ...................••..................•..•................

REMOTE CONTROL TRANSMITTER 28

DATA 16

OF

TEST POINT

8-14

17

20-27

YAMAHA

1.4k-346

YAMAHA

Po.

13

CORPORATION

Box1,Hamamatsu,Japan

~

PrintedinJapan.

'91

.2

AV-80Y

•

TO

SERVICE

1.

Critical Components Information. Components having special characteristics are marked and must be replaced with parts having specifications equal those originally installed.

2.

Leakage Current Measurement (For 120V Model Only). When service has been completed, it verify that all exposed conductive surfaces lated

from

supply circuits.

• Meter impedance should by

0.1SJlF.

• Leakage current must not exceed

•

Be

sure to'test for leakage with the

polarities.

PERSONNEL

is

imperative that

are

be

equivalentto1S00

O.SmA.

AC

pluginboth

properly insu-

ohm

you

shunted

AC

LEAKAGE

to

WALL EQUIPMENT OUTLET UNDER TEST EQUIVALENT

@1

• POLARIZATION (U, C models only)

~

INSULATING TABLE

This amplifier product ing-current line plug other). This This

plug

IS a safety feature.

will fit into the power outlet only one way.

I~

is

equipped with a polarized alternat-

(a

plug

having one blade wider than the

TESTER

~

OR

I

WARNING:

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO

NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC

MOUTH FOR ANY REASON WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale sol-

der fumes or expose eyes to solder/flux vapor!

If

you comeincontact with solder or components located inside the enclosure of this product, wash your

hands before handling food.

•

REAR

....

U model

PANELS

,....--""'''''''''

CHEMICAL

_-CO-_-"--LD-~_

@

~:r-

~~~~~~~~~

~@~~@~@~~@~@~

e~~~p1~~~~

CONTENT

_....:-_..

NOTICEI

OR

PLASTIC COMPONENTS

@

w~

.......

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v

80Hz

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,

IN

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YOUR

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=-=-=-

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T R model

T A model

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m

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8~~~~~~~~

......eM

@5. @5. @5. @5.

....

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1IQ/J20/22Q11.a

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T H model

@

2

AV-80Y

•

SPECIFICATIONS

• AUDIO SECTION • VIDEO SECTION

Minimum

Dynamic Power Per Channel

Dynamic Headroom

IEC

Damping Factor

Input Sensitivity/Impedance

Input Sensitivity (New IHF)

Maximum-Input Signal

Output Levelllmpedance

Headphone

Frequency Response

RIAA Equalization Deviation

Total Harmonic Distortion (20Hz-20kHz)

Signal to Noise Ratio (IHF-A-Network)

Residual Noise (IHF-A-Network)

Channel Separation (Vol.

Graphic Equalizer

Continuous Loudness Control (Level related equalization)

Gain tracking error

RMS

Output Power Per Channel

100W

20Hz-20kHz, 0.15%

(by IHF Dynamic Headroom measuring method)

sn

6n

sn

Power

1kHz, 0.1%

1kHz,

sn

Phono

MM

CD

etc.

Phono

MM

CD

etc.

kHz,

0.02%

1

Rec Out

Jack

0.1%

THO,

20Hz-20kHz,

MM

Phono

MMtoRec

CD

etctoSpeaker Out,

Phono

MM

(5mV Input Shorted)

CD

etc. (Shorted)

Phono

MM

input shorted 1kHz/10kHz

CD

etc input

Control Frequency

Boost/Cut ±10dB

Attenuation

THO,

sn

0.3%

THO,Sn

0.3%

THO,

sn

THO,

SQ/6n

THO,

Phono

MM

Rated Output/Impedance

RL=sn

CD

etc.

Out, 3V

50w/sn 35w/sn 22W/Sn

-30dB)

5.1knterminated 1kHz/10kHz

60Hz, 150Hz, 400Hz, 1

(OdB-60dB)

1S0mV/150n 220mV/100n

2.5kHz, 6.3kHz, 16kHz

1S0mV/100n

(U,

70W

(R,

55W (H)

145W (U,

90W

(R,

60W (H)

1S0W

(U,

100W

(R,

75W (H)

1.6dB

(U,

60W/70W

2.5mV/47kn

150mV/47kn

0.25mV 15mV

SOmV

150mV/1.4kn

(U,

(R,

-o.5dB±O.5dB

OdB±0.5dB

0.1%

(U,

0.05%

0.1%

(R,

0.1% (H)

79dB 92dB

200J,LV

55dB/50dB 55dB/50dB

kHz,

-20dB(1kHz) 3dB

C) A)

C)

(H)

50

C) A)

(H)

C) A)

Video Signal

Input/Output

• GENERAL

Power Supply

U,

C models A model H model R model

Power Consumption

U model C model A model C model A model

AC Outlet

Switched x 3 Switched x 1 Switched x 3 (C)

Dimensions (WxHxO)

Weight

"Specifications subject to change without notice.

C •.......•......•....... Canadian

U.•.....•......•........

A Australian

H ...........•.......•...North European

R General

(U,

(A)

R,

• DIMENSIONS

-

CJ

~~~~~~~

0

I.~

H)

U.

435

(

17-1/8")

AC110/120/220/240V,

435 x 122.5 x 304.7

(17-1/S" x 4-13/16" x

model

S. A.

model

.

......

~.

l J

0 0

0

=

ccccc

1Vp-pl75n

AC120V, 60Hz AC240V, 50Hz AC230V, 50Hz

60/5OHz

390VAl300W

100W max. (Total)

100W max.

100W max. (Total)

1A

max.

7.4kg

(16

Ibs

model

-

'ID

ID

o ,II'!

,

ION

,.,

=

IN

T

!-

!

I

I.

I

~l-

.

~ ~

=

Unit : mm (Inch)

SOW

1

400W 200W 400W

(Total)

mm

12")

5 oz)

3

• BLOCK

PHONO

CD

DIAGRAM

C(')l------J

+5

f[TAPE

VCR

(Ol~-----

~[TAPE

VCR

cO}-------.---------'

LD

VCR

o

UJ

o

>

..J

~

z

o

u

UJ

~

o

~

UJ

0::

PB

MONITOR

VCR

REC

PHONO

.....

-----___t

{rtjl----~

~

REMOTE

COT~~N~

~

+f

RECEIVER

U1

........

UNIT

...-----\r\fv-----------------('lO

R392

FUNCTION

LED

05,8-10,16,17

MUTE

ICIO

@

MOTOR

CONTROL

ICIO

@,@

CONTROLLER

lca

XL1

D

SYSTEM

IC10

4

LOUDNESS

BALANCE

MAIN

VOL.

IC201A

H.P.AMP IC202A

YST

SELECTOR

SW201

YST

EO

CIRCUIT

IC221A

POWER

AMP

AV-80Y

RY201

L

R

-+5

MOTOR

CONTROL

ICIO

@.@

ICa

KI-

K4

01",,03

---:;.;.....:....=.;=--_.~I

I

NPUT

POWER SW

SW2-8

EO

UNIT

SELECTOR

&

1....-

IC20aA

R

a

LEVEL

METER

IC9

R •

.......

+A

PHONES

SYSTEM

CONTROLLER

IC10

4

• MOTOR CONTROL ICa

@@

MUTE

POWER SUPPLY

&

)J-COM

RESET

09,10

06,7

+12

±B

±1~

±9

SUB

POWER

SUPPLY

0210

POWER SUPPLY

0203,204

I

C204-207

T201

POWER

SWITCH

DRIVE

0246

II

F201

5

AV-80Y

•

INTERNAL

VIEW

o POWER TRANSFORMER

f)

MAIN CIRCUIT BOARD

o MAIN CIRCUIT BOARD

e Jl-COM CIRCUIT BOARD

(3

Jl-COM CIRCUIT BOARD

(3

MAIN CIRCUIT BOARD

(4)

o Jl-COM CIRCUIT BOARD

(2) (1)

(9) (1)

(3)

•

DISASSEMBLY

(Remove partsindisassembly orderasnumbered.)

1. RemovalofTop Cover

Remove 5 screws ( Cover back.

2.

RemovalofFront Panel

Remove 6 screws (

Panel toward.

3.

RemovalofBottom Cover

Remove 4 screws ( ® )inFig.

<D

CV

PROCEDURES

)

in

Fig.1,and

)

in

Fig.1,and

1.

slide the TOP

pull the Front

Top Cover

Fig. 1

6

• InstallationofTop Cover

< Example

Note

1

of

Incorrect Installation>

of

correct

Installation>

~

<D

Note1:

--

As the Top Cover hits hard, it will get

damaged.

Place the lug of the Top Cover on the Sub-chssis.

The side of the Top Cover is further inside than the Panel upper rib.

Fig. 3

Fit the lug of the Top Cover into the gap between the Panel and Subchassis.

Turn the Top Cover downward.

.\

1

Note

2

(2)

I

Note

Tum

the

Top

Cover

downward.

2 : It's supporting point should be

st~p

as in above

<D

Fig. 2

Fig. 4

..

""---.

@ Slide the Top Cover forward.

,-,-It

•

ADJUSTMENTS

• Idling Adjustment

To stabilize operation of the amplifier, turnONthe power in

the no-signal state and wait for two minutes before the

adjustment. Adjust VR201 (L ch) so that the voltage at both R255 (L ch) becomes DC1.5mV±O.3mV. Adjust VR202 (R ch) so that the voltage at both R256 ch)

becomes

DC1.5mV±O.3mV.

(R

Fig. 5

..ilDD1l

®

00

c:::J-

VR20,

Eel

c:::J

R255 (L ch)

.0

(lch)

non

c::r

VR202 (R ch)

EeJ

-r::=J-

R256 (R ch)

..,

([[[[[[[~~[[[[[[[

7

1

_____

A B

•

PRINTED

Note)

3t~im

:

CIRCUIT

Component

side

BOARD

(Foil

---I.-

side)

C

REMOTE CONTROL

PHONO

---I..-

D

--'L

MAIN

•

Semiconductor

Ref.

No.

o

201

o

202

o

2

203

o

205

o

206

o

215

o

216 0217 IC201 IC202 IC203 IC204 IC205 IC206 IC207 IC208 IC219

Location

02 03

G2

E3 F3

G3

03 F2 F5 F5 02 E2 E3 02 03 F2 G5

Location

Re.

IC220 IC221 0201 0202 0203 0204 0205 0206 0207 0208 0209

o

210 0211 0212 0213

o

214 0215

No.

Location

G5

85 02 C3 C2 C3 02 03

E4

E4 G3

03 G3

03

F4

04 G4

ef.

o

216

0217

o

218 0219 0220 0221 0222 0223 0224 0226 0227

o

229 0230 0232 0237 0238

No.

Location

E4 G3 E3 G3 F2 F2 F2

F2

E2

F2

E2

F2

02 C2 C3 C3

C.

B ( 1 )

3

MAINC.B

-YST

•

CONVENTIONAL

·YST-l

·YST-2

4

(4)

SELECTOR

.....

0

-

3:

~

Z

~

FROM:POWER

IDLING

ADJ.

DC1.5mV

CURREI

(Rch)

:to.3mV

TRNSFORMER

-i

5

z

Ci

::5 :E

o

a:

LL

6

8

D

E

F

G

AV-80Y

H

TO:JlCOM

VI

DEO

LD

SIGNAL

VCR

IN

( 9 )

OUT

TO:JlCOM

MONITOR OUT

( 1 )

+ ®

+

."

o

:E

m

:xJ

~

:xJ

»

Z

en

."

o

:xJ

m

==

:xJ

IDLING

ADJ. (R

POWER

CURRENT

DC1.5mV

ch)

:to.3mV

TRNSFORMER

8

......

---

--

IDLING CURRENT

ADJ.

(Lch)

DC

TO:VR

.......

FROM:

1.5mV

:to.3mV

BLOCK

jJCOM(3)

-

CD

-

9

J.l-COM

D

C. B ( 1 )

A

AV-80Y

•

PRINTED

1

Note)

~*jij

:

CIRCUIT

Component

side

B

BOARD

CD

to

@: WAVEFORM OF TEST POINT (See page 17)

(Foil

side)

c

PHONO

2

3

CD

TUNER

TAPE

TAPEP8REC

LD

OUT TAPEP8RECOUT

VCR

J.l-COM

4

TO:J.lCOM

5

C. B ( 9 )

( 2)

•

Semiconductor

Ref.

No.

o 1 o 2 o 3 o 6 o 7

011 012 013

~

-. FROM:MAIN

Location

03 03 G2 E2 02

G4

F4

G4

Ref.

014 015 020 023 024 IC IC IC

l"ll(')~~r«

IDU5m

' .- - -

( 1)

No.

Location

1 2 3

Jl~

y_

--

~----'

G4

F4 F5

G5

04 A2 02 82

Ref.

~.J..J...J..J..J

IC IC IC IC IC IC10 IC11

a 2

No.

4 5 6 8 9

Location

82 82 C2

G2

F4 C4 84 02

Ref.

a 3 a 4 a 5 a 7 a 9

. 010

011 012

No.

~---"'I-

Location

02

82 C2 C3 E2 E2 02 02

FROM:J.lCOM

( 2)

10

6

11

~

( 1 )

-I

0

~

0

0 3C

PI.)

1=

E F

_-I

IO

3

.•

o

~

3C

.....

-

~

-

-I

0

3C

~

"'T1

::D

0

:s:::: :s::::

~

Z

FROM:pCOM(9)~.~~~

0.0

~O

o

~

--

~

"'T1

::D

0

-I

0

i:

Q)

==

~

Z

~

Jl-COM C. B ( 3 )

Jl-COM C.

G

VOLUME

B ( 4 )

H

-I

::>

:")

:>

=

~

)

:

JlCOM

:

JlCOM

( 8 )

(2)

Jl-COM C. B ( 5 )

VOLUME

100·20·

2 .

0.4·0.1

OUTPUT

Jl-COM C. B ( 6 )

:0

I·

LEVEL

:~COM

(5)

E;J

- PLD REMOTE

CONTROL

11

--

FROM:JlCOM

( 1 )

A

•

PRINTED

1

Note)

x~iIfi

:

2

CIRCUIT

Component

==

a

o

:i.

a

t-

side

B

BOARD

0210

00.

(Foil

side)

MAIN C. B

•

U,

C models

AC

OUTLETS

(2)

c

_ .....-

D

FROM:ACCORD

T201

3

TO:POWER

4

TO:AC

TO:

5

OUTLET

MAIN

'9"""

::E

a

0

:i.

a

t-

(7)

(A

(H

TRNSFORMER

MAIN C. B

•

A,

ONLY) ONLY)

.

~.

: J:

021~

.~.

°CD

'4---

(2)

H models

-----or-----.....

-~

T201

ACI

AC2

,--~-

-<

m

"y

E~

RE(AI BE(H)

FROM:AC

CORD

TO:POWER

6

TRNSFORMER

12