Sherwood Newcastle R-325 Manual de usuario

SERVICE

MANUAL

R-325/R-325RDS

AUDIO/VIDEO

PRO-LOGIC

RECEIVER

CONTENTS

SAFETY

PRECAUTIONS.

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MECHANICAL

PARTS

LIST

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SPECIFICATIONS

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VIEW

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PRINTED

CIRCUIT

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ELECTRICAL

PARTS

LIST

------cccccecceecesceseeseeue

CIRCUIT

DESCRIPTION

-------+----seeeeetereeeceeeeeees

FUNCTIONAL

BLOCK

DIAGRAM

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ALIGNMENT

PROCEDURES

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SCHEMATIC

DIAGRAMS

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SCHEMATIC

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Sherwood.

SAFETY

PRECAUTIONS

WARNING

Before

servicing

this

unit,

familiarize

yourself

with

the

following

precautions:

Many

electrical

and

mechanical

parts

this

chassis

have

special

safety

characteristics

that

often

pass

unnoticed

and

the

protection

afforded

them

cannot

necessarily

obtained

using

replacement

components

rated

for

higher

voltge,

wattage,

etc.

Replacement

parts

that

have

these

special

safety

characteristics

are

identified

this

manual

and

its

supplements:

electrical

components

having

such

features

are

identified

the

schematic

diagram

and

the

parts

list.

Before

replacing

any

these

components,

read

the

parts

list

this

manual

carefully.

The

use

substitute

replacement

parts

that

not

have

the

same

safety

characteristics

specified

the

parts

list

may

create

shock,

fire,

other

hazards.

Before

returning

the

set

the

customer,

always

leakage

current

check

the

exposed

metal

parts

the

cabinet,

such

terminals,

screw

heads,

and

metal

overlays,

sure

the

set

safe

operate

danger

electrical

shock.

Plug

the

line

cord

directly

into

120

outlet

(120

version

only).

(Do

not

use

line

isolation

transformer

during

this

check.)

sure

your

voltmeter

has

sensitivity

5000

per

volt

greater.

Then

connect

1500

watt

resistor,

paralleled

0.15

150

capacitor,

between

known

good

earth

ground

(such

water

pipe,

conduit)

and

the

exposed

metalic

parts,

one

time.

Measure

the

voltage

across

the

combination

1500

{)

resistor

and

0.15

capacitor.

Reverse

the

plug

the

outlet

and

repeat

voltage

measurements

for

each

exposed

metalic

part.

Voltage

measured

must

not

exceed

0.75V

RMS.

This

corresponds

0.2

AC.

Any

value

exceeding

this

limit

constitutes

potential

shock

hazard

and

must

corrected

immediately.

Outlet

5000

per

volt

greater

sensitivity

the

reading

should

not

exceed

0.75

0.15

150V

Place

the

probe

each

exposed

metalic

part.

Voltmeter

Good

earth

ground,

such

water

pipe

conduit.

SPECIFICATIONS

FRONT

AMP

SECTION

Measuring

methods

are

based

IHF

and

IEC

standard

268-3.

Measurements

conditions,

unless

otherwise

noted:

Output

resistive

load:

ohms/Both

channel

driven.

Tone

(Bass,

Treble),

Balance:

Center

Position,

Other

SW's:

OFF.

Nominal

input

level:

for

MM,

0.5

for

MC,

500

for

general

purpose

inputs.

Power

figures

should

kept

minimum

min.

between

and

‘c.

Terminator:

100

ohms

for

MC,

kohms

for

and

general

purpose

inputs.

Filter:

IHF-A

filter

R/O:

Rated

Output

input

Sen

AUX.

tkHz

[230

Sramnel

ales

(voto

-40.

de]

__dB__|

[ResidualNowe

AUX

tkHz_|

VOL-mn.

mv]

|Total

Harmonic

Distortion

AUX

20Hz

60W1IW]

0.09

sowiw]

0.09

20kHz

6OW/IW]

0.2

0.09

Pea

Average

Power

AUX

|_20Hz

8ohms

0.2%

THD

ikHz

8ohms

WwW

[60

20kHz

8ohms

inter

Modulation

Distortion

60Hz=4}

RIO

0.2

0.09]

SMPTE

7kHz=1[

0.09

ice

Noise

Ratio

AUX

ikHz

[wim

—[TkHz

R/O

74_|

Channel

Separation

AUX

100Hz

RO-3a8

noe

shorted.

[tkHz

Ri0-3dB

dB_|

[f0kHz

R/O-3dB

dB_|

[Function Crosstalk

CD-»AUX|

1/10kHz|

RIO-30B

70/65

75/70

[10

(Frequency

Response

AUX

Hz~kHz[

20/50

10/70

11]Tone

Control,

+10

AUX

100Hz

1W_

+10+2

+10+1)

10kHz

dB]

10+2

+10+1'

[Phono

Equalization

PHONO

100Hz

TAPEOUT|

RIAA+2

RIAA+1|

kHz

TAPEOUT|

[

RIAA+2

RIAA+1]

[13

[Input

Overload

0.5%

THD

1kHz

TAPEOUT[]

[

140

145

«-

REAR

AMP

SECTION

Measurements

conditions:

Input

level

350

mV,

Delay

time

mS,

Rear

level

max.,

Master

volume

adj,

Only

Rear

Channel

drive.

[Power

Output

0.7%

THD

[Total

Harmonic

Distortion

AUX

1kHz

4.0

[0.7

|Signal

Noise

Ratio

AUX

(IHF-A

Filter)

DOLBY

THEATER

SAUX

HALL

SIMULATED

AUX

60S

|Frequency

Response

AUX

kHz

Hz~kHz

100~6

80~7

(ONLY

DOLBY)

CENTER

AMP

SECTION

Measurements

conditions:

Input

level

350

mV,

WIDE

mode,

Center

level

max.,

Master

volume

adj,

Only

Rear

Channel

drive.

Power

Output

0.3%

THD

P50

-2

[Total

Harmonic

Distortion

AUX

1kHz

0.09

Signal

Noise

Ratio,

HF-A|

AUX

DOLBY

MODE

NORMAL

AUX

kHz

wine

[AUX

1W_|

Hz~kHz|

50-60

20-60

VIDEO

SECTION

ING

Output

Level

ohms

VCR1

(1Vp-p

MHz

|_|

[Frequency

Response

VOR‘

(vp-p)|_1MHz

-|Hz—MAz|

DC~6

DC-63

[Signalto

Noise

Ratio

[vert

(vep|

1MHz|_-

[orosstak

——SSC~dVR

em]

TMH2

«ar

SECTION

Measuring

methods

conformity

with

IEC

standard

315.

Measurements

conditions;

Radio

frequency:

1000/999

kHz,

Audio

frequency:

400

Reference

level:

mV/m,

mV/m

ohms,

Modulation:

30%

Test

point:

TP1=600

kHz,

TP2=1000

kHz,

TP3=1400

kHz

(USA/Canada

Version)

Test

point:

TP1=594

kHz,

TP2=999

=1404

Versi

|Tuning

Cover

Range

LOW~

HIGH

USA/Canada

520~1710

Europe/Korea]

kHz

522

~1611

Step

AUTO/Man.

USA/Canada

kHz

10/10

Europe/Korea

kHz

9/9

Usable

Sensitivity

uV/m

800

<500

S/N=20

TP2

uV/m

<800

<500

TP3

uV/m

<800

<500

[Signal

Noise

Ratio

Total

Harmonic

Distortion

16)

ofofafo]

are

Over

Load

Distortion

input,

6O%MOD._|——+|

—%

Frequency

Responseat6dB

SCE

SSSC*YSC

|Selectivity_____T0KHafokHz

_—~+(|

«B

[

320

>25

[AGC

Figure

ofMent

—100mVat-10dB

|_|

=50

355

|Whistie

Modulation

attmvim

SST

sts

Holimage

Rejection

tes

SSSSC~dPSCSSCSCSC~dS

(C0

[Auto

Stop

Level

———SCSCSSSCSCSCSCSCSSSSS~*dCn

[

B0|

B00H

SECTION

Measuring

methods

conformity

with

IEC

standard

315.

Measurements

conditions

FM;

Radio

frequency:

98.1

MHz,

Audio

frequency:

kHz

Reference

level:

ohms

Deviation:

MONO=+75

kHz,

Stereo=+67.5

kHz+7.5

kHz

(Korea/USA/Canada

Version)

Deviation:

MONO=+

kHz,

Stereo=

+40

kHz+7.5

kHz

(Europe

Version)

Test

point:

TP1=90.1

MHz,

TP2=98.1

MHz,

TP3=106.1

MHz

(Korea/USA/Canada

Version)

Test

point:

TP1=90

MHz,

TP2

Version

87.5~

108

200/200

100/50

Korea/USA/Canadal

<17.2

<14.2

dBf

<17.2

<14.2

dBf

<17.2

14.2

Europe

dBf

20.2

<17.2

dBf

20.2

<17.2

dBf

$20.2

17.2

Step

AUTO/Man.

|Usable

Sensitivity

S/N=30

|Full

Limiting

Sense

Output=

-3

Korea/USA/Canada

dBf

15.2

<12.2

Europe

$20.2

<17.2

|_4

|Auto

Stop

Level

Pts:

BE]

31.2(5)

[31.2123]

Signal

Noise

Ratio

MONO

Korea/USA/Canada

>65

Europe

>62

STEREO

Korea/USA/Canada

>60

Total

Harmonic

Distortion

MONO

STEREO

|50

Quieting

Sensitivity

Korea/USA/Canada

dBf

Quieting

Sensitivity

Europe

dBf

48.

45.3

Frequency

Response

+1.5

téi‘(tSsé*dYCOhKHKz

20/12.5

10/74

Channel

Separation

Korea/USA/Canada

Europe

Korea/USA/Canada

Europe

Korea/USA/Canada

Europe

10/|Spurious

Response

Korea/USA/Canada

eee

Image

Rejection

TP3

Korea/USA/Canada

270

280

270

=80

247

252

$2.5

Rejection

ratio

Korea/USA/Canada

Europe

Capture

ratio

ace

Output

Level

MONO

cAn

‘at

GENERAL

Power

CONSUMPtiON

--------------------

nnn

2.3A,

550W,

450W

Power

Supplies

------------------n--—-

nanan

nnn

120v,

50Hz

(USA/Canada

Version)

230V,

50Hz

(Europe

Version)

220V,

60Hz

(Korea

Version)

Dimensions

D)------------------n

nnn

440

125

300mm

17-5/16

4-15/16

11.8inchs

Weight

(Net)

-—---=----—-==---—

aaa

ncn

ennn

nena

cece

nce

ncncencnnenannmnnnen

10.5kg

BLOCK

DIAGRAM

Model

No.

R325/R325RDS

KEY

ees

peei

Waron.,

MATRIX

DIGI

LINK

MULTIZROOM[

CLK.

ANT.

FRONT

END

TUNED

<j—

cru

STEREO

MONO

MUTE

DOM

VER

:AM/FM

IF.

MPX

DATA

CONTROL

LINE

peta

eee

;

120V/60Hz

USA:

MPX.

(

EUROPE

:230V/50Hz

fey

INPUT PARTS

Bae

SURAOUND

PARTS

15.

-45v

ete

TUNER

PARTS

OUTLET

MAIN

AMP

PARTS

POWER

SUPPLY

PARTS

pont

AMP

REAR

AMP.

Lapse

‘ide

(SAME

LEFT

CHANNEL

]}

see

PHONO

@—_>——-o

O—-——__“o

FRONT

TV/AUX

MASTER VOLUME

TONE

AMP

AKCKNEE

GPK.

tape

FOO

BY-PASS

1Q—__—__“

ones

ast

SUFFER

AUDIO

INK,

)

VCR

MUTE

SUB

WOOFER

PRE-OUT

PRO-LOGIC/3-STEREO

MAIN

FRONT

SPKR

CENTER

PRE-OUT

;

DOLBY

PRO-LOGIC

DISCRETE

CENTER

ADAPTIVE

MATRIX

SPK.

NJUW4

102

®@

ven

E-VOL

MASTER

iCS299

VOLUME

MONITOR

She

Sie

PROTECT

CONTROL

DIGITAL

—

DISCRETE

DELAY

REAR

NJUS702

140B

14¢0B

SPK,

REAR

PRE-OUT

or)

2828101111

2828101121

2828101511

4001005170

(ONLY_D}

CP1i01

PCB6

(PWR

SW)||

PCB6

(ST/BY)

CN704

PCB11

(SPKR

SW)

WIRING

DIAGRAM

PCB3

(SPKR)

\_/

PCB2

(MAIN)

(ONLY

cP7o04

|ensoi

[BP

CcP102

CP106

3°

CP104

CP302

QO.

PCB5

(FRONT)

B’D

PCB7

(SURR)

Model

No.

R325/R325RDS

PCB12

(DIGILINK)

PCB8

(INPUT)

BD:

PCBS

(VOLUME)

10P

PCB1

(TUNER)

ie)

CIRCUIT

DESCRIPTION

1C301

LPD

78043AGF-209

-3B9

Description

FIP

Grip

G10

G11

G12

Vdd

CLOCK

DATA

MODE

MAIN

MUTE

1102,9702CE

9273CE

SIMULATED

LED

RLY

RESET

RDS

OPTION

PROTECT

AVSS

RDS

DATA

ENC

STEREO

AMP

OPTION

OG3

GRID

OG!

80 79

67 66

6564

omWn

Omer

39 40

29 30

Ugehesoog

fuume

wetassess

PEEY®

D2>x3atE5,2206

D222

Sos

222

FED

rEFoDzZ

205

fe)

;

SEGMENT

$11

$12

$13

$14

$15

S16

STBY-LED

VOL-LED

VOL-UP

VOL-DN

(VCR1)

(VCR2)

Vdd

7001

CLOCK

7001

DATA

7001

Vss

ENC

DOWN

RDS

CLOCK

POWER

DOWN

RMC

K1——

KEY

Input

Output

Terminal

Functions

[PinNo.|

Symbol

__|

Description

—————SS—SCS~—SCSCSCSCSCSCSS

Vid

+8V

power

supp.

SSS

CLK]

Output

clock

signal

TC0273,

NIWITO2

and

NJUSTOZ.

SCS

[77

move

Output,

control

output

for

ByPass

Mode

and

surr

Mode.

MAIN

Output

for

main

mute.

MUTE

Output

low

level

under

the

following

conditions.

When

power

turned

off.

When

function

changed.

When

MONO

STEREO

changed.

When

Low

level

inputed

PROTECT

port

CPU.

When

mute

signal

received

from

the

commander.

Each

time

the

simulated

button

pressed,

the.

"SIMULATED

LED"

light

off.

Output

for

driving

Power

Relay

(Active

High)

Input

for

resetting

CPU.

(Active

High)

Control

output

for

RDS

mode.

(This

output

used

only

for

R325RDS)

PROTECT

Signal

input

for

protection.

When

low

Level

inputed,

changed

STAND

mode.

This

provides

the

ground

potential.

RDS

data

input

TDA7330BD.

(This

input

used

only

for

R325RDS)

Input

for

Encoder

Volume

and

down.

(CW)

(CCW)

AVss

RDS

DATA

22/47

ENC

UP/DOWN

STEREO

Input

for

lighting

the

"STEREO"

indicator.

(Active

Low)

AMP

OPTION

input

for

selecting

5060.

POWER

MUTE

When

the

power

on,

control

data

output

High

after

seconds.

When

the

power

off,

control

data

output

"L".

Input/Output

for

controlling

digi-link

{||.

Input

signal

level

Tuner.

D-LINK

S-METER

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