Sherwood RV-5050RDS Bedienungsanleitung

SERVICE

MANUAL

RV-5050RDS

STEREO

A/V

PRO-LOGIC

RECEIVER

Sherwood

Oremume

mAi/DIC.VIDEC

RECEIVER

RV.

5050ROS

OR

2

TL

OR

PCAN

Ran,

==

© ©

©

=cee9

=a

CONTENTS

«

Safety

PreCAUtiONS------ere

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Specifications

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Madicsive’s

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station

Suse

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Printed

Circuit

Boards

----++---

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Wiring

Diagram

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Mechanical

Parts

List

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31

Block

Diagram

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Electrical

Parts

List

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32

Circuit

Description

----++++-++-++eseese

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Semiconductor

Lead

Identification

Alignment

PrOC@dAUres

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17

&

internal

Diagram

BG

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sees

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Troubleshooting

----:eeereceeereee

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Schematic

Diagrams(I,

II,

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|

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Sherwood

SAFETY

PRECAUTIONS

WARNING

Before

servicing

this

unit,

familiarize

yourself

with

the

following

precautions:

1.

Many

electrical

and

mechanical

parts

in

this

chassis

have

special

safety

characteristics

that

often

pass

unnoticed

and

the

protection

afforded

by

them

cannot

necessarily

be

obtained

by

using

replacement

components

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.

2.

Before

returning

the

set

to

the

customer,

always

do

an

AC

leakage

current

check

on

the

AC

Outlet

At

5000

Q

per

volt

or

greater

sensitivity,

the

reading

should

not

exceed

0.75

V.

0.15

pF,

150

V

AC

Place

the

probe

on

each

exposed

metalic

part.

exposed

metal

parts

of

the

cabinet,

such

as

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

230

V

AC

outlet.

(Do

not

use

a

line

isolation

transformer

during

this

check.)

Be

sure

your

AC

voltmeter

has

a

sensitivity

of

5000

Q

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

0.75

V

RMS.

This

corresponds

to

0.2

mA

AC.

Any

value

exceeding

this

limit

constitutes

a

potential

shock

hazard

and

must

be

corrected

immediately.

AC

Voltmeter

Good

earth

ground,

such

as

a

water

pipe

or

conduit.

SPECIFICATIONS

FRONT

AMP

SECTION

Condition:

DOLBY

PROLOGIC

off.

No.|

Description

Unit

|

Nominal

Limit

|

1

|RMS

Output

Power(mode:

STEREO)

both

channels

driven

at

40

Hz-20

up

freg.,

0.7%

THD,

8

Q

load.

>82

>80

2

|Inter

Modulation

Distortion

(60

Hz:7

du=4:1

SMPTE)

L

at

8

©

load,

80

W

output.

%

<0.05

<0.08

3

|Input

Sensitivity

PHONO!

py

|

2.8

+

0.35

2.8

+

0.4

I

at

1

Miz

freq.,

47

kQ

Impedance.

CD,ETC)

my

|

170

+

20

170

+

30

|

4

|PHONO

Input

Overload

at

1

ki

freq.,

0.5%

THD

nV

>140

>120

5

\Frequency

Response;

at

8

©,

1

W

output,

30

-

15000

Hz

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

>

PHONO!

gp

|

RIAA

+1.0

RIAA

+1.5

|

ats

©,

80

W

output,

-3

aB-

------------------->CD,

TAPE)

Hz

|

10-60000

20-50000

|

6

[Signal

to

Noise

Ratio

IHF"A"

weighted

PHONO,

gp

=70°

|

>66

at

8

©,

1

kz,

80

W

output

CD,

AUX;

@B

>90

>

85

7

|Tone

Control

at

8 Q,

1

W

output

BASS:

100

Hz}

«GB

10+1.8

+1042

|

TREBLE:

10

kh]

oB

10+1.8

+1042

8

[Channel

Separation

at

8

Q,

80

W

output

100

Hz!

oB

>50

j

>40

Input

shorted,

CD,

TAPE

1}

oB

>50

>40

oe

10k

B

|

>45

>35

9

{Crosstalk

at

8

O,

1

kd

freq.,

80

W

output

CD=>TAPE1|

gB

>65

>50

|

Input

shorted

TAPE=CD,|

oB

>60

>50

10

|Sub

woofer

output

at

CD,

1

kh,

170

ny

input

|

nV

900+100

|

900+150

|

11

[Headphone

output

at

1

kz,

1

W

Speaker

output

33

Q

Load]

my

|

200430

200

+

50

10

|

Total

Harmonic

Distortion

40

fz)

%

<0.05

<0.2

at

8

Q

load,

80

W

output

1kk|

%

<0.05

<0.2

20k)

%

|

<0.2

<0.3

REAR

AMP

SECTION

Condition

input:

CD,

Input

level:

1

Kaz

freq.

230

nv,

Rear

level:

Max.,

Mastar

Volume:

adj.

No.|Description

Unit

|

Nominal

Limit

1

|RMS

Output

Power(1

CH.

driven

80

W)

|

at

1

iz

freq.,

8

Q

load

|

%

|

<0.8

<1

|

2

|Frequency

Response

>80-

7000)

+100

-

7000

at

1

W

output,

+3

dB,

WIDE

MODE

|

Hz

(+

500)

(+1000)

3

|Signal

to

Noise

Ratio(IHF"A”"

weighted)

Delay

time:

20

ms

DOLBY|

dB

|

265

>60

|

CENTER

AMP

SECTION

Condition

Input:

CD,

Input

level:

1

Wz

freq.

220

ny,

Center

level:

Max.,

Mastar

Volume:

adj.

No.|/Description

Unit

|

Nominal

|

Limit

|

1

‘RMS

Output

Power(1

CH.

driven

80

W)

aes

|

at

1

kHz

freq.,

8

©

load

|

%

<0.2

|

<0.4

2

|Frequency

Response

|

at

1

W

output,

-3

qB,

DOLBY

NORMAL}

Hz

|100-17000)

150-15000

|

WIDE}

Hz

|

30-

17000

50-15000

|

3

[Signal

to

Noise

Ratio

(IHF"A"

weighted)

NORMAL)

4B

>78

>70

|

VIDEO

SECTION

(No.

Description

|

Unit

|

Nominal

Limit

|

1

[Input

Sensitivity/impedance

|

dB

|1Vp-p/75

O

+0.5

L

2

|Output

Level/impedance

[

gB

1

Vp-p/75

9

+0.5'

|

3

|Frequency

Response

5

Hz

-6

M|

4B

+2

+3

4

|Crosstalk

1.0

Wm

dB

>45

|

>40

[

5

{Signal

to

Noise

Ratio

|B

345

>40

FM

SECTION

Antenna

Impedance:

75

QO

AM

SECTION

No./Description

Tuning

Frequency

Range,

Step:

9

kz

Usable

Sensitivity

Signal

to

Noise

Ratio

>|

Cy

Fy)

Go}

PO]

Unit

Kz

/m

dB

%

No.|/Description

Unit

|

Nominal

Limit

1

[Tuning

Frequency

Range,

Step:

50

kt

Miz

87.5

-

108.0

2

|Usable

Sensitivity

df

<17.2

<20.7

3

|-46

gB

Quieting

Sensitivity

MONO]

iW

<3

<5

STEREO

<35.8

<56.2

4

|Signal

to

Noise

Ratio

(IHF"A"

weighted)

MONO!

«B

>70 >65

=-

STEREO}

aB

>65 >60

5

|Total

Harmonic

Distortion

at

1

kd

freq.

MONO!}

%

<0.30

<0.50

STEREO|

%

<0.60

<0.90

6

/Frequency

Response

at

20

Hz-15

kh

dB

>4+2

>+3

7

|Image

Rejection

dB

>40

>35

8

|Spurious

Response

dB

>70

>60

9

|IF

Rejection

|

dB

>65

>60

10

|Alternative

Channel

Selectivity

dB

>

50

>40

11/AM

Suppression

Ratio

dB

>60

>50

12

|Stereo

Separation

100

Hz;

B

>40

>35

1k!

«B

>45

>40

10

Wz}

GB

>35

>30

13

|Auto

Stop

Error

MONO

|

apf

28+5

28+6

14

|Muting

Threshold

dbf

2845

28+6

15

|Output

Voltage

MONO)

nv

500

+

80

500

+

150

16

|RDS

Sense

@TA

ON

Level

28.1

35.8

Nominal

522

-

1611

<500

>45

<1.0

|

1

|

Tuning

Frequency

Range,

olep.

9

kip

CNS

|

2

|Usable

Sensitivity

SO

SON

Total

Harmonic

Distortion

Selectivity

i

dB

>25

>20

Image

Rejection

dB

>33

>28

<800

>

40

<i5

7

|Frequency

Response

at

400

yz

freq.

0

dB,

-6

aB

Hz

80

-

2100

100

-

1800

9

|Auto

Stop

Level

dB/m

60+5

60+6

11

|Output

Voltage

400

Hz,

30%

MOD.,

@1000

rz!

nv

200+

40

200+50

=|

General

Speaker

Load

Impedance

-

- -

-

--

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

5-2

r

rrr

r

rrr

8Q

Power

Consumption

-

--

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

640

W

Dimensions

(WxHxD)

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

2-2-0025

-

ree

(17-5/16X5-1/2X13

inch)

Weight

(Net)

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

Power

Supplies

-

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

7-2-5

-rr

rrr

crc

errr

cre

Specifications

and

components

subject

to

change

without

notic

Overall

performance

will

be

maintained

or

improved.

440X140X330

mm

9.85

kg

(21.72

Ibs)

230

V

AC,

50

Hz

AC

INPUT

POWER

TRANS

OOD00000

000

eee

TRANS

B’D

4001001430

CN1i04

(PCB7)

PWA

SW

B’D

4001001440

SPK

A.B

HEADPHONE

8’

D

400

10041630

(PCB10)

CN10S

WIRING

DIAGRAM

(PCB11)

(PCB2)

PRE-IN

OUT

B’D

400

1001650

yv

is

SURROUND

SPK

&

VIDEO

B’D

4001002910

CN205

cP2i0

HEAT/SINK

8beNOD

4001002360

MAIN

B’'D

[dE

]

o

Cc

3

bO

oc

Oz

>

o°

ies

we

on

Oo

6YeCNO

CN221

4001004400

FRONT

8°D

(PCB3)

jo]

©

=<

°

=

°

(°]

v

CNe1i

CN212

CNe1i3

QP

6P

4001001420

SURRE&

VOL

B’

D

(PCB4)

alc

A

S

oO

Al

(PCBS)

i

CP2i7

SP

TAPE2

B’'D

4001004620

TUNER&

ROS

B’

D

Model

No.

:

RV-5050RDS

CN216

4001001610

(PCBS)

cP2i3

CP221

4001001410

ANT

n

x

AM

rs

|

TUNER

OO

more

O

0

©

cotvep)

1

Oo

©

A

TAPE

1

[

om

°o

©

CO

v

eset

:©

OD

tapee

[

MON

fe)

I

(1C¢101/102)

6

I

VCR

[

vcR

1

REC

°

vVCRe

—

REAR

4

I

DB

ver:

[

fe]

E

0

GO4066

vere

ie

REAR

MONITOR

Out

BLOCK

DIAGRAM

pe

RES

Se

Sea

ee

eee

re

ay

ees

toe

5

1

|

rs

Plo]

=

START

ap

'

DEMODE

.

CECODE

AbS-

eo

t

_

:

*DA73306

LC7O73

1

\

LA1235

1

SIGNAL

METER[

1

oo

Dt

svu

|

7

3

DATA

CLK

cE

TUNED

STEREO

a

MUTE

eorora

ae

LA3410

ia

my

[Doe

aM EM

L.P.F

iA

7

ea

PRO

LOGIC/Z

‘

3

STEREO

x

DOLBY

PRO-L.OGIC

ADAPTIVE

MATAIX

NUM

2177A

[(IC501)

DIGITAL

DELAY

NUU

9701

(IcSO3)

FL

CPU

(ic505)

SHIFT

REGISTER

MC

14094

INPUT

PaRT

SLRROUND

PART

TUNER

PART

MAIN

PART

POWER

PART

Se

BALANCE

O

|

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Bae=sue:

oMAINZEN

)

Tcosess

N

Model

No.

:

RV-5050RDS

RESOR

KEY

—NATOR

MATRIX

DIG:

DISPLAY

LINK

O

RMC

SENSOR

|

<L~

(|

commences

|

Y

RELAY

PEs

;

CP

ij

niezon

-27v

'

\

REGULAT

ae

FL

ac

3.5v

4

ST-BY

RELAY

+12v

<

REGULATOR

-12V

12v

-iev

+

BV

Sv

FRONT

AMP.

2

AMP

CENTER

AMP,

<A

POWER

REAR

amp.

SUPPLY

REGULATOR

Sv

POWER

Sw

ac

INPUT

OC

R

WOOFER

OuT

L

HEAO

PROTECT

PHONE

A

©

STEREO

MODE

GOW

X

2

SURA

MODE

SOW

x

2

MUTE

CH

MUTE

B

CENTER

PRE-OuT

+

DISCRETE

CENTER

AMP

CENTER

SOW

PROTECT

REAR

25wx2e

DISCRETE

RESAR

AMP

CIRCUIT

DESCRIPTION

1C201

:

uPD78044AGF-152

(8bit

CMOS

Microprocessor)

1.

Configuration

GRID

KEY-OUT

Sit

G7

$12

G8

$13

$14

G10

$15

G11

(6)

S16

G12

7)

ViD4

Voo

(8)

vib2

CLK-7073

(9)

RDS

MODE

DATA-7073

(10)

VOL

DOWN

CH

MODE

@)

uPD78044GF-152

VOL

uP

aes

(2)

T

MUTE

ST-9216

413)

Voo

CLOCK

(14)

=~

viD3

DATA

@9)

ST-4094

ST-7821

-———(6)

ST-BY

LED

RESET

(7)

Vss

$T-9701

48

RMC

Sis2299

a9)

DB

LINK

AVss

20

PWR

DOWN

STEREO

@1)

DATA

7073

VIDS

22)

KC/TOO

VID4

3)

KuUTO1

RDS

IN

(24)

K2/TO2

25{26)27)-+28)-29)-B0)-3

1)-

82-33-34)

85)-38)-G7)-38)-39)

40)

Pied

Beene

Rae

We

Ae

ddd

he

deal

x=

—

to.

“<>

cr

See

Beh

See

Ni

|

Mere

Be

ye

Sir?

2

fee

eS

ee

Oe

KEY-IN

i

on

Ss

=

z

pC

‘al

:

£

8

;

Up}

2.

Functions

No.

|

Symbol

Description

RE

Logic

|

1-7

GRID

6-12

|

Grid

signal

output

for

FIP.

ae

;

8

VDD

+5

V

power

supply.

9

CLK-7073

=|

Clock

port

of

LC7073.

10

DATA-7073

Data

port

of

LC7073.

11

CH-MODE

Control

port

for

Dolby

Pro-Logic

Channel.

H

12

ST-BY

When

the

power

is

on,

control

data

output

is

"H".

|

When

the

power

is

off,

control

data

output

is

"L"

|

and

last

memory

is

actived.

13

ST-9216

Strobe

port

of

TC-9216.

14

CLOCK

|

Clock

output.

=a

15..|.

DATA

|

Data

output.

16

|

ST-7821

Strobe

port

of

LC-7821.

17

RESET

|

Input

for

resetting

CPU.

18

ST-9701

Strobe

port

of

NJU-9701.

|

t

—{__—-

——4

19

ST-9299

|

Strobe

port

of

TC-9299A.

20

|

AVss

Ground

21

STEREO

Input

for

detecting

FM

STEREO.

H/M/L

22!

VID5

|

Control

port

of

VCR2

front

and

rear.

23-554

VID4

Control

port

of

VCD.

|

24

RDS

IN

Strobe

port

of

TDA-7330B

RDS

input.

L

25

|

PROTECTION

|

Signal

input

for

protection.

26

COC;

TUNED

Input

for

detecting

the

station

during

tuning.

L

27

|

STEP

According

to

the

region,

input

for

selecting

the

frequency

bands

and

steps

of

FM

and

AM.

Settings

are

as

follows.

REGION|

FREQUENCE

|

STEP

|

27

|

AMERICA|FM:

87.5

-

107.9

MHz}

200

KHz)

5V

|

AM:

520-1710

KHz

|

10

KHz

|

EUROPE

|FM:

87.5-108MHz

|

50KHz|

2.5

V

L

i

522-1611

KHz

|

9

KHz|

|

KOREA

|FM:

87.5

-

107.5

MHz)

200

KHz}

OV

|

|AM:

522-1611

KHz

|

9

KHz

28

|SIGNAL

METER’

Input

port

of

FM

Signal.

H/L

i

29

AVaag

|

Power

supply

of

Analog

A/D

Converter.

“a

|

30

AViet

|

Ref.

Voltage

of

Analog

A/D

Converter.

L

31

GND

Ground.

|

32

N.C

|

Not

used

!

a

Vss___

Ground.

34

X-TAL

IN

Input

for

crystal

oscillator.

|

35

X-TAL

OUT

|

Output

for

crystal

oscillator.

z

36

C.MUTE

'

Control

port

for

Center

Signal

mute.

H/L

37

S.MUTE

Control

port

for

Surround

Signai

mute.

H/L

38

T/M

MUTE

Control

port

for

Tape

Monitor

Signal

mute.

39

M.MUTE

Control

port

for

Main

Signal

mute.

H

10

;

Active

No.

|

D

ipti

|

No

|

Symbol

escription

|

Logic

oT

:

40

-

43

K3

-

KO

Data

input

for

key

scan.

H

DATA

-

7073

Data

start

of

LC-7073.

45

PWR-DOWN

Input

for

detecting

power

down.

L

D-LINK

Input/Output

for

controlling

DIGI-LINK.

47

RMC

input

for

remote

control

data.

aay

Vss

Ground.

ST-BY

LED

Output

for

driving

stand-by

LED.

H

50

ST-4094

Strobe

port

of

M-14094.

H

51

52

[Vn

|

*5V

power

supply.

53

Output

to

drive

volume

motor

for

increasing

volume

level.

VOL.DOWN

|

Output

to

drive

volume

motor

for

decreasing

volume

level.

56

RDS

MODE

Control

port

for

RDS

mode.

mB

Ij

x

57

VID2

Control

port

for

VCR2

hie.

58

viD1

Control

port

for

VCR1.

59

-

70

SEG

16-5

Segment

signal

output

for

FIP.

71

Vioad

-30

V

power

supply

for

FIP.

SEG

4-1

Segment

signal

output

for

FIP.

76

-

80

GRID

1-5

Grid

signal

output

for

FIP.

fe

3.

Block

Diagram

TOO/PI0

O=—]

isbnTIMEN

[A

TO1/P31

O

8

ba

TIMER/

==

Ti1/P33

0

EVENT

COUNTER

|

K

>

POO-PO4

TO2/P32

T12/P34

Bbit

TIMERS

K—

sence

[ef

vom

/

WATCHDOG

TIMER

K

—_

>

“WATCH

TIMER

[rome

F>

mm

CIO/INTP3/PO3

oe

Een

ae

f

COUNTER

coms

om

aa

el

2

em

E>

vom

eee

intenraceo

K—Y

PORTIO

[-_

>

P100-P107

SCKO/P27

s1/P20

©

s01/P21

©

BeRL/P22

owe]

SERIAL

YA)

|

puzzer

[SOCK

|

crock

|

cock

cavmaror

|

sranp

By

INTERFACE

1

OUTPUT

stB/P23

©

OUTPUT

DIVIDER

|

sus

|

CONTROL

BUSY/P24

©

CONTROI.

Ko

PorTID.

«KC

pino-P17

O

AYa,

O

ANIO/P10.

a,

a

BUZ/P36

PCL/P35

PO4/XT1L

XT2

AVps

O-—~-|A/D

CONVERTERK

—_

;

ate

Cy

rome

kD

P120-P127

oe

°

|

i

|

INTPO/TIO/POO

INTERRUPT

FIPO-FIP33

Lath

|

conmo.

K—~

FE

Mae

Se

vi

~INTP3/Cl0/PO3

O

Vreso

11

4.

Key

Matrix

OUT|

KSCANO!|

KSCAN1

|

KSCAN2/

KSCAN3/

KSCAN4|

KSCANS5

|

KSCAN6

|

KSCAN7

IN

61

62

PIN63

|

PING4

|

PINGS

|

PIN66

|

PIN67

|

PIN68

[

eS

PUN

KEY

INO

|

DISPLAY

AM

TAPE

1

|

TAPE

2

CD

4

VCR2

>

VCR1

43

|

{DCC

|

MON.

|

Fora

ec

ae

eal

rr

ONO

FM

4

2

DIRECT

A

Sia

|

(RDS

PH

|

v

SS

STE

USE

SERRE

RE

eee

KEYIN2|)

AF

CENTER

5

9

3

6

41

MODE

|

KEYIN3|

DTY

|

SURROUND

o

|

8 7

MEMORY

|

AUTO

FM

40

MODE

|

/IMANU

|

MODE

le

5.

Digital

Tuning

System

Description

<QquE

FV

PLL

Loop

<7]

AM

PLL

Loop

FM

ANT

___FM

FRONT

END

PACK

r

—

vee

eens

Ge

ome

ee

om ee

ee

ag

FM

RF

FM

MIX

FM

OSC

|

Keay

I

Low

Pass

Filter

Q902,

Q903

ai

PLL

Prescaler

FE

901

FM

IN

1C901

AM

IN

CCT

Sr

we

Se

we

=

AM

ANT

Data

CPU

1C201

AM

OSC

Key

FL

;

[Butler

|

!

Display

Switch

Matrix

!

I

|

!

|

1

i

|

1

I

1

|

!

i

L

12

Sherwood RV-5050RDS Bedienungsanleitung

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