Denon PMA-830 Manual de usuario

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Hi-Fi

Component

Ampiifier

SERVICE

MANUAL

MODEL

PMA-830

SOLID

STATE

STEREO

INTEGRATED

AMPLIFIER

secon:

yteeeyy

erates

NIPPON

COLUMBIA

CO.,

LTD.

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PMA-830

ree

TABLE

CONTENTS

SPECIFICATIONS

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EXPLODED

VIEW

CHASSIS

AND

CABINET

PRONG

ODE

care

ten

Seale

Bete

eed

eee

ees

PACK

USI

wets

ean

deen

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METHOD

ADIUSTMENTS

soiree

scr

ead

eck

oeee

nee

ecdewd

eee

oeueetues

PRINTED

CIRCUIT

BOARD

PATTERNS

AND

PARTS

LIST

INPUT

TERMINAL

UNIT

O2y

CONTROL

(A)

UNIT

MENG

2508

atoning

Aeneas

ese

CONTROL

(B)

UNIT

E162

siete

hes

tabs

POWER

SOURCE

AND

PROTECTOR

UNIT

ETC-280........

0.000

cece

eee

POWER

AMP

UNIT

BUX

0205.35

226

deve

Sulnne

enous

enn

butnts

WIRING

DIAGRAM

«4

2.02453,

peeaw

cadn

deren

dade

ich

one

Posie

sees

A-S30

SPECIFICATIONS

MAIN

AMPLIFIER

SECTION

Type:

All

stages

pure

complementaly

push-pull

system

circuit

Rated

Output

(both

channels

driven)

kHz

(at

ohm)

Class

operation:

Class

operation:

each

channel

(T.H.D.

0.01%)

each

channel!

(T.H.D.

0.005%)

kHz

(at

ohm,

T.H.D.

0.02%)

Class

operation:

Total

Harmonic

Distortion

Class

operation:

Class

operation:

{intermodulation

Distortion

H2/7

kHz

4/1:

Power

Bandwidth

Class

operation:

Class

operation:

Transmission

Characteristic:

Input

Sensitivity

Input

impedance:

Output

Impedance:

Signal

Noise

Ratio:

Output

Terminals

Speaker:

Headphone:

each

channel

less

than

0.01%

less

than

0.005%

less

than

0.01%

(at

equivalent

rated

output)

less

than

0.01%

{at

watt

output)

kHz

(IHF,

T.H.D.

0.05%)

100

kHz

(IHF,

T.H.D.

0.05%)

100

kHz

“0

(at

watt

output}

volt

r.m.s.

ohm

less

than

0.16

ohm

122

4to

ohm

Joad

A+8B,8

ohm

load

for

Stereo

Headphone

PRE

AMPLIFIER

SECTION

Pre

Amplifier

Output

Max.

Output:

Rated

Output:

Total

Harmonic

Distortion:

0.003%

{at

output)

Equalizer

Amplifier

Output

Max.

Output:

(T.H.D.

0.01%

ohm

load)

Rated

Output:

320

Input

Sensitivity/input

Impedance

Phono-1,

2.5

/50k

ohm

Tuner:

320

/40

ohm

Aux.

Tape:

320

ohm

Maximum

Allowable

Input

Phono:

200

kHz

RIAA

Deviation:

less

than

+0.2

(20

kHz)

Signal

Noise

Ratio

(IHF.

network)

Phono:

better

than

{input

terminal

shorted}

Tuner,

Tape,

Aux:

better

than

105

(input

terminal!

shorted)

Aux

—

Pre

Out

Frequency

Response

100

kHz

Tone

Control

Section

Variable

Range

100

kHz

Tone

Defeat:

Bass:

Treble:

Filter

Characteristic

Hz,

—6

dB/oct

Loudness

Control

Characteristic

100

Hz+7

kHz2+6dB

220V,

440

(at

max.

output

power)

Subsonic:

Low

range:

High

range:

Power

Source:

Power

Consumption:

Dimensions:

434

(W)

164

(H)

400

(D)

17-5/64"

(W)

6-29/64”"

(H)

15-3/4"

(D)

Weight:

kg,

35.3

Ibs

These

contents

are

subject

alteration

without

prior

notice.

A-830

OS,

BLOCK

DIAGRAM

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PMA-830

EXPLODED

VIEW

CHASSIS

AND

CABINET

FRONT

SIDE

mum

A-830

BACK

SIDE

—~5—

eae

A-S30

CHASSIS

AND

CABINET

GROUP

PARTS

LIST

Part

Name

Descriptions

Part

Name

Descriptions

477006411

FIXING

SCREW

4110145204

CONTROL

BRACKET

(A)

;

4730353

TAPPING

SCREW

(2)

4610061121

RUBBER

SHEET

4110148502

SIDE

CHASSIS

2740037014

2SD427

(R)

(O)

TRANSISTOR

4140114205

SHIELD

COVER

4120372106

RADIATOR

BRACKET

(A)

4610074176

BLIND

4711809033

CROSS

PEN

SCREW

2120119002

SPEAKER

SWITCH

4753001051

TOOTH

WASHER

2558001007

OIL

CAPACITOR

0.01uF

2720024005

2S8557

(0)

TRANSISTOR

3930032019

PILOT

LAMP

6.3V

0.15A

INSULATING

SHEET

2124122008

POWER

SWITCH

4170077105

POWER

RADIATOR

4110144409

FRONT

CHASSIS

4120373105

RADIATOR

BRACKET

(B}

— —

MD-4232

WIRE

CLIP

—

4110147309

MAIN

CHASSIS

ADHESIVE

TAPE

2546031007

6800uF

CAPACITOR

BLIND

2050095102

EARTH

PLATE

4730354035

TAPPING

SCREW3x8

CONNECTOR

1440375103

FRONT

PANEL

ASS.

4450020005

CORD

BUSH

1120161006

KNOB

ASS.

2062016001

CORD

BLIND

SHEET

4610061118

RUBBER

SHEET

—

1050294001

BACK

PANEL

4711304033

CROSS

PAN

SCREW

2070002007

TRANSISTOR

SOCKET

21 11

NUT

ie;

PUX-020L

POWER

AMPLIFIER

UNIT

(L)

2048011101

HEAD

PHONE

JACK

CONNECTOR

CORD

4110146106

CONTROL

BRACKET

(B)

—

1120160007

KNOB

ASS.

4140113002

INPUT

BRACKET

1120162209

KNOB

ASS.

ETC-143

INPUT

TERMINAL

UNIT

1120166108

LEVER

KNOB

— —

1430041007

PILOT

LENS

2020012005

FUSE

HOLDER

SC-1162

SPECIAL

SCREW

2061015087

FUSE

4.0A

TIME

LAG

1020063440

TOP

COVER

1220007057

SPACER

2335127009

POWER

TRANSFORMER

ETC-259B

CONTROL

(A)

UNIT

2050003000

LUG

TERMINAL

—

4752006002

mmS

WASHER

2110161109

100

ohm

POTENTIOMETER

4756012005

NUT

2110162001

100

ohm

POTENTIOMETER

ETC-280

POWER

SOURCE

PROTECTOR

UNIT

2120114007

ROTARY

SWITCH

CONNECTOR

ASS.

2120115019

FUNCTION

SWITCH

CONNECTOR

CORD

2120127007

FUNCTION

SWITCH

93 3P

CONNECTOR

CORD

2110160100

ohm

POTENTIOMETER

2038004005

CONNECTOR

CORD

NUT

CONNECTOR

CORD

7mm

NUT

2050070004

TERMINAL

7mm

TOOTH

WASHER

2056037005

SHORT

NUT

4770088002

4.1

WASHER

TOOTH

WASHER

2050043109

GND

TERMINAL

1050188405

BOTTOM

COVER

100

—

2124110007

LEVER

SWITCH

101

4140057207

BOARD

BRACKET

2120118003

ROTARY

SWITCH

102

2036043000

CONNECTOR

BASE

2120117004

ROTARY

SWITCH

103

—

2034093052

CONNECTOR

CORD

2124110010

LEVER

SWITCH

104

PUX020R

POWER

AMP

UNIT

(R)

2110163107

100

ohm

POTENTIOMETER

105

= a

4700009006

CROSS

PAN

SCREW3

106

CONNECTION

CORD

107

ETC-277

CONTROL

(B)

UNIT

108

2030014048

CONNECTOR

ASS.

1120163208

KNOB

ASS.

109

MD-5271

P.C.B.

SUPPORT

1040040003

FOOT

110

MD-4368

WIRE

CLIP

4730456014

TOPPING

SCREW

(2)

111

4753100004

TOOTH

WASHER

7mm

NUT

112

4770006004

4mm

NUT

4410316005

DIN

PLATE

abe

Beate,

A a

PMA-S30

METHOD

ADJUSTMENTS

VOLTMETER

L-CHANNEL

{DIODE}

TRIZ0

(TRANSISTOR)

CONTACT

WITH

DIODE

AND

TRANSISTOR

VR5

VR3

(VR

R-CANNEEL

13,D9

{TR

14,

10)

SYSTEM-A

210

TEST

POINT

SYSTEM-B

meee

PUX-020

POWER

AMP.

UNIT

SPEAKER

TERMINALS

DATA

FOR

ADJUSTMENTS

Confirm

that

forming

has

been

effected

shown

the

drawing

for

and

TR13,

and

D10

and

TR14,

respectively

the

L-

and

R-channels.

(PU

X-020)

The

amplifier

switchs

should

set

follows:

(1)

SPEAKERS

switchs

“A”

system.

(2)

VOLUME

minimum

position.

(3)

DIRECT

COUPLE

OFF.

(4)

POWER

switch

OFF.

(5)

OPERATION

switch

“B”

position.

(6)

Confirm

that

U-sharped

short

inserted

between

the

PRE-OUT

and

MAIN-IN

terminals.

{1}

Connect

D.C.

voltmeter

the

SYSTEM-A

terminal.

(2)

Connect

D.C.

voltmeter

the

test

points

both

the

L-

and

R-channels

the

PUX-020.

Special

attention

should

paid

here

with

regard

the

polarities

the

test

point

voltages:

make

sure

that

—

and

for

the

L-chan-

nel,

and

that

—

and

for

the

R-channel.

4.(1)

After

setting

the

voltage

regulator

switch

the

amplifier’'s

power

switch

on.

(2)

While

ovserving

the

indication

the

D.C.

voltmeter,

raise

the

power

supply

voltage

from

zero

the

rated

voltage

using

the

voltage

regulator,

and

carry

out

the

preliminary

adjustments

(3)

and

(4)

swift

manner.

(3)

adjusting

VR1

(L-channel)

and

VR2

(R-channel)

the

PUX-020,

regulate

the

speaker

terminal

voltage

the

range

+10

mV.

(4k

adjusting

VR5

(L-channel)

and

VR6

(R-channel)

the

PUX-020,

regulate

the

rest

point

voltages

(10

mV)

[Collector

current

(22

mA)].

(1)

completion

the

preliminary

adjustments

described

above,

carry

out

the

main

adjustments

described

below.

(2)

“

adjusting

VR1

(L-channel)

and

VR2

(R-channel),

adjust

the

speaker

terminal

voltage

again

that

will

the

range

+10

mV.

(3)

“Adjust

VR5

(L-channel)

and

VR6

(R-channel)

again,

regulating

the

test

point

voltage

mV_+1

(Collector

current

mA).

(4)

With

the

above

adjustments,

the

speaker

terminal

voltage

adjustment

and

idling

current

adjustment

for

B-class

operations

have

been

completed.

(1)

Change

over

the

OPERATION

switch

Class

(2)

adjusting

VR3

(L-channel)

and

VR4

(R-channel)

the

PUX-020,

carry

out

adjustment

the

test

point

voltage,

regulating

470

+10

(Collector

current

+0.02

A).

(1)

Switch

over

the

OPERATION

switch

and

effect

aging

for

minutes.

(2)

adjusting

VR3

(L-channel)

and

VR4

(R-channel)

the

PUX-020,

regulate

the

test

point

voltage

500

mV__

(Collector

current

1.06

+0.01

A).

With

the

above

operations,

idling

current

adjustment

for

A-class.

operations

has

been

completed.

CAUTION

Never

switch

off

power

until

the

idling

current

adjustments

for

Class-A

operations

have

been

completed.

Special

attention

should

paid

handling

the

variable

resistors

used

for

adjustments,

i.e.,

VR3

and

VR4,

and

VR5

and

VR6,

they

can

easily

mistaken

for

one

another.

mistake,

VR5,

VR6

has

been

used

for

the

idling

current

adjustment

for

A-class

operations,

readjustment

must

carried

out

(after

confirming

that

the

radiator

the

power

amplifier

has

cooled

down)

for

B-class

operations,

since

the

mistake

will

cause

deviation

the

adjustment

for

B-class

operations.

completion

this,

carry

out

adjustments

for

A-class

operations

again.

The

adjustment

(2)’’

should

effected

after

about

seconds

have

passed

following

switch-on

the

OPERA-

TION

switch.

INPUT

TERMINAL

UNIT

PRINTED

CIRCUIT

BOARD

PATTERNS

AND

PARTS

LIST

INPUT

TERMINAL

UNIT

ETC-143

: :

~—

dee!

ETC-143

PARTS

LIST

RESISTORS,

CAPACITORS

2410378003

2531027000

2551088003

OTHER

PARTS

2220560001

2048009003

2048007005

2040055000

2038058019

2038058006

2038059005

4450033005

2040046006

4140113002

MD-5271

+5%

+80,—20%

+10%

470

ohm

0.1uF

0.22uF

P.C.

OCARD

JACK

CONNECTOR

WIRE

CLAMP

BAND

SOCKET

INPUT

BRACKET

P.C.B.

SUPOORT

asia

Part

Name

Descriptions

FOR

PHONO

FOR

REC1,2

FOR

TUNER

FOR

TAPE

FOR

TAPE

FIXED

CARBON

FILM

RESISTOR

FIXED

CERAMIC

CAPACITOR

FIXED

PLASTIC

FILM

CAPACITOR

TUNER,

AUX,

P.B.

AUX

FOR

OHONO

USED

PMA-830

-3

RPMA-830

CONTROL

(A)

UNIT

ETC-259B-1,

-2,

-3

(1)

TONE

UNIT

;

RIQ,20:2SA726(F)

TR25,26:2SA942(

BL)

TRI7,18,

21,22:

25C1000(GR)

aca

2nFRIG:20:2SA7261F)

TR2S,

(7)

95.022

Res

——1688.922

TR27,28:

25C2089

(BL)

$4ly

10/50

R758

()

’

iNinw

TREBLE

cS)

”

‘

}

~Te

ROG

Sis

2.2k

@b=

“C76

16750

16790

ada

“72

ETC-259B-2

43)

ETc-277

48)

R76

48)

c6és

Cc70

: .

10/50

096

0.22

(ETC-259B-1)

CONTROL

(A)

UNIT

(2)

EQUALIZER

AMP

UNIT

CONTROL

(A)

UNIT

(

ETC-259B-2)

TRG

N0:2SA872(E)

«=

TRU,

12:2SCIT7S(E)

TRI3,14:2SC173510)

nai

47x

TRIS,I6:2SAB50(0)

ssqay

TRI,2,5,6:

2scieaaiF)

533%,

R23

R227

20k

30x

47k

150

47/50

TR3,4

7,8:

2SAQqI(F

}

c3q

ces

4700p

c4l

ctr

;

sé

nee

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ge}

les

Led

Raa

Ci6

0.0068

0.015

c40

47750

C94

I/CFQ3A

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Pate

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