Scott R-316 Manuale utente

price

$6.00

SERVICE

MANUAL

stereo

components

R-326

1-526

1-526L

®

Ci)

SS

Cc

©)

I

_..

where

innovation

is

a

tradition

H.

H.SCOTT,

INC.,

111

Powder

Mill

Road,

Maynard,

Massachusetts 01754,

Tel.

617

897-8801

AUDIO

SPECIFICATIONS

Output

Power

R316

.

20

watts

per

channel

min.

R316,

R326

R316L

RMS

at

8

ohms

than

0.5%

total

harmonic

distortion.

R326

. .

30

watts

per

channel

min.

RMS

at

8

ohms

than

0.5%

total

harmonic

distortion.

Input

Sensitivity

Phono

. «

6

«©

©

Mic

2.

6

«©

©

«©

wo ew

we

Aux

2.

0 6 ©

@

eo et ew ew ew

we

ew

Tape

Recorder

.

....

+.

ee»

Signal-to-Noise

Phono

. . 2 6

©

we

ew

we

Mic

.

2.

«© «©

©

«©

©

© ©

©

eo

ew

ow

AUX

2 6 © © © ©

©

© ©

©

«©

©

Frequency

Response

. .

.

+.

«

©

« «

Phono

Response

RIAA

......

»

Phono

Overload

. .

2...

2 2 6

«©

© «

Max.

Input

Signal

Phono

(IHF)

..

Input

Impedance

Phono

.«

«6 «6

«

«©

©

«© «©

©

AUK

2.

6 «

0

6

© ©

ee

eo

ew we

Tape

. 6

«©

2 ©

we wo

ww

Cross

Talk

@

1

kHz

@10

kHz

.

1.

2.

sw

«©

ew

oe

Rated

Harmonic

Distortion

R316

«2

©

@

ww

we we

ew

we

ew

R32

6

e

e e e

° e

*

e

° e

e

Intermodulation

Distortion

R316.

1

ew

we

ew we

we

te

ee

ww

R326

o . e e e

. e

°

e

e o e e

From

0.5

Watts

to

rated

equivalent

operating.

Bass

Control

Range

.....+2.+s.

Treble

Control

Range

.

....e-s

High

Filter

....

2...

2.

see

Low

Filter,

R326

......

e468.

Loudness

Comp

....

+ « © e « «

sine

wave

CONTROLS

from

40-20,000

Hz

from

40-20,000

Hz

3.

7.

3,

7.

5

d

i)

5

with

both

.

S58

at

with

no

more

with

no

more

2.5

6.0

160

mV

60

dB

65

dB

.

75

dB

Hz to

35

kHz

+1

dB

60

mV

42

dB

47,000

ohms

60,000

ohms

60,000

ohms

e

45

dB

35 dB

0.5%

0.15%

0.1%

channels

+10.5

dB

(+1

dB)

100

Hz

+10.7

dB

(+1

dB)

10

kHz

+1

aB

+1

dB

+1

dB

+1

dB

10

kHz

100

Hz

10

kHz

100

Hz

FM

TUNER

SECTION

Usable

Sensitivity

Mono

.

2.

6

«© «©

© ©

«©

© ©

©

oe ow

ee

lt

Stereo

.

6.

1

0

ee

eo

ee

th

tte

th

tt

50

dB

Quieting

Sens.

Mono

.

«

«©

©

© 8

6

8

ee

ell

Stereo

.

2.

«

©»

«©

© ©

©

© 8

te ee

ll

Signal-to-noise

@

65

dBf

Mono

.

2.

«6 «©

«©

0

eo

ee

le lw lw

Stereo

.

2.

2 2

ee

we

et

we

et

te

wt

Frequency

Response

30-15,000

Hz

Mono

.

.«

« « ©

©

© ©

«©

©

© ©

©

ee

Stereo

.

2.

2»

«© ©

© ©

©

wo

we

te

we

eh

eh el hl

Distortion

@

65

dBf

Mono

.

«

«©

© ©

«©

©

© ©

©

8

Stereo

.

2.

6

«

©

©»

©

ew

ll

lw

Alternate

Channel

Selectivity

.

2.

+ «

2»

«©

ew

«

Stereo

Separation

100

Hz

2.

6 « ©

ew

ww ee

we th

tlt

ltt

ltl

tt

ll

1,000

Hz

.

«1

1 0

ww

eo

ew we

et

wh

wt

te

10

,900

Hz

» e e ° . e e

e

J

.

°

se

e

e ° .

eo

Tuning

Range

.

2.

6

«

«©

©

© ©

eo

we

ee

we

Deemphasis

(switchable)

.

2.

6

ee

ees

°

.

ee ee

7.0

ABE

(2.5

BV)

we

a

ee)

624

ABE

(18

pV)

«+

»

« »

10

dBE

(3.5

pV)

oe

© ©

«4

36

dBf

(70

wv)

Pe

a

os

Bo)

oe

es

eo

we

ew ew we

he)

«665

CB

wee

ee

F2

wee eee

ee

2

GB

Pe

0.3%

a

0.5%

a

YA

9)

we

ew ew

ew

©)

686

CB

oe

eo

ee

we

640

GB

eee

ee ew

hh

ew

e684

CB

e

.

cd

e

° e

87.

5-

108.

MHZ

25,

50

&

75

pS

Tuning

Indicators

.

.....

+...

..

.

Meter,

Signal

Strength

&

Center

Tune*

Interstation

Muting

. 2.

.«

«=

2 « ©

«©

© ©

«©

©

ww

Stereo

Threshold

......-«

«© «©

©

°

oo

oe

tw

ew

Switchable

o » « «

»

7-15

pV

Preset

Muting

Threshold

.....

50.

6 2

ee

eee

7-

15

uV

Preset

(switchable,

On-Off)

Antenna

Input

.

...

6 6

6

«©

© «

«©

©

«©

»©

300

ohm

Balanced,

75

ohm

Unbalanced

AM

TUNER

SECTION

Usable

Sensitivity

.

2.

6

«©

©

«©

©

we we we

we

ew

Selectivity

. .

1.

2. 2 1

© ©

©

oe

ww

oe tw

we

ww

Signal-to-noise

Ratio

.

2...

6.

«©

ew

we we

ow

Total

Harmonic

Distortion

(40%

modulation)

...

Tuning

Indicator

. .

1.

2 2 6

«©

©

ew wo

we

we wo

Antenna

.

2.

6 6

+»

«©

©

© ©

©

we

ew

ee ew

Tuning

Range

.

2.

« 2 6

«©

©

te we

wt

we

te

Long

Wave

Tuning

Range

. 2

«

6

©

© ©

ee

we

*signal

strength

meter

only,

in

Model

R316

ce

ee ee

200

pV/m

ee

eh ed

3D

GB

min.

eee

we

ew

ee

6

650

CB

a

2.0%

ee

ew

oe ew eh

elh)6hMeter

Built-in

Ferrite

Loopstick

se

we

535

kHz-1605

kHz

ce

ee

150

kHz-350

kHz

GENERAL

SPECIFICATIONS

Power

Line

Requirement

120

Volts,

60

Hz

Power

Consumption

R316...

1

we

ee

we

tlt

lhl

whl

elhlehe™©6CU2S5

Watt

min.

205

Watts

max.

R326

. 2

6

©

0

ob

ew

we

ew

tlt

el

lle

wl

ele)

628

Watts

min.

270

Watts

max,

Dimensions

«.«

« « © ©

«©

«

© ©

©

© ©

©

ew ew

ew)

618

«67/16

x

15

3/16

x

5

5/8

inches

.

oe ee

we

wt

tw wt

tt

lw

tw

ww

wl

ew

w)~=6466

X

390

X

142

om,

Weight

R316

we

ee

ee ee

we

ee ee

ew

ee

ee)

2545

lbs.»

2

11.6

keg.

R326

2

ee ee

ee

ww

te

wee

ee

ew

ww

we)

62665

Ibs...)

12

ge

Shipping

Weight

.......

Add

4

ibs.

1,82

kg

for

container

and

materials.

AUDIO

SPECIFICATIONS

T526

Output

Impedance

Tape

Output

and

Fixed

Output

.......+

2.2

«©

«se

we

ee

we

10,000

ohms

Adjustable

Output

.

2. 2.

6

©

2 ©

so ew we

we

tw

Approx.

10,000

ohms

Output

Level

Tape

Output

and

Fixed

Output...

.....

++...

es

0.5

Volts

@

400

Hz

Adjustable

Output

.

2.

6 ©

©

we

@

ew

O

-

O.5

Volts

G@

400

Hz

GENERAL

SPECIFICATIONS

Power

Line

Requirement

.

..

2.

« e

¢

«

«©

© ©

©

© ©

©

© @

«©

«

120

Volts,

60

Hz

Power

Consumption

. .

2. 26 «

« ©

«©

©

» © © © ©

©

ow ew ew

hel

h

e)615

UWWatts

Dimensions

....

s+

2»

©

© ©

©

«©

© ©

w)6

615

3/4

x

13

3/4

x

5

5/8

inches

oe

0

ee

ow

ew

ww tt we

we

ww

we

tlw

lw

el

ew

400

X

350

x

142

mm.

Weight

.

2.

2 6

+ ©

0

ee

8

ow ew

th

ww

hw

«16,45

Lb,

7.5

kg.

Shipping

Weight...

..

.

Add

31/4

lbs.

1.5 kg.

for

container

and

materials.

POWER

LINE

REQUIREMENT

Models

R316L

&

T526L

.

4...

1

ew

ee

we

we ew ew

ee

ew)

61LO0V*~,

120V,

220V,

or

240V

oe

eo

ew

el

wl

thle

hl

whl

wh

w!™CUCéOD

ox

60

Hertz

TEST

AND

ALIGNMENT

PROCEDURES

RECOMMENDED

EQUIPMENT

(or

equivalent)

1.

AC

vacuum

tube

Voltmeter

(H.P.

400D)

2.

DC

millivolt

meter

(Fluke

8000A)

3.

Oscilloscope

4,

Volt-Ohm

meter

(Triplett

model

630)

5.

Harmonic

Distortion

meter

(H.P.

331A)

6.

AM

Signal

Generator

(H.P.

606A)

7.

FM

Signal

Generator

(Measurements

Corp.

model

88)

8.

Multiplex

Generator

(Scott

model

830)

9,

Audio

Oscillator

(H.P.

200

CD)

0.

Standard

AM

dummy

antenna

(200

puF

ceramic

or

mica

capacitor)

1

.

Standard

FM

dummy

antenna

for

300

ohm

balanced

input

(see

circuit,

Figure

FM-1)

12,

Suitable

alignment

tools,

cables,

etc.

13.

Two

8

ohm

resistive

loads,

compensated

for

L

&

C

(min.

50W)

14,

Variable

power

line

transformer

(General

Radio

5A)

15.

Suitable

line

Voltage

and

current

monitoring

meters

Note:

Equipment

specifications

are

minimum,

Set

controls

to

following

positions

for

test

procedure.

Deviate

from

these

settings

as

instructed

in

the

test

procedures.

Return

to

these

settings

at

the

beginning

of

each

new

test.

All

tests

are

to

be

made

with

117V

AC

line.

Unless

otherwise

specified,

supply

input

to

both

channels

and

read

both

outputs.

Front

Panel

Input

Selector

Aux

Tone

Controls

Flat

(12

O'clock)

Loudness

Minimum

(full

CCW)

Balance

12

O'clock

Speaker

#1

On

Note:

When

troubleshooting

defective

power

circuits,

it

is

some-

times

useful

to

switch

a

small

line

voltage

lamp

in

series

with

equipment

under

test

before

applying

power.

The

lamp

will

limit

the

current

drawn,

thus

preventing

further

damage

to

circuit

com-

ponents.

The

variable

power

line

transformer

is

also

useful

to

determine

if

additional

short

circuits

exist,

if

used

with

a

power

line

current

and

Volt

meter.

Note:

When

power

line

voltages

other

than

120

V.A.C.

are

used

for

testing,

be

sure

voltage

selector

in

the

unit

is

set

to

the

appro-

priate

position

and

that

equivalent

test

equipment

is

used,

Where

a

standard

FM

antenna

matching

network

is

not

available

for

the

particular

signal

generator

in

use,

a

suitable

network

can

be

assembled

on

a

small

phenolic,

or

plastic

board,

using

the

circuit

below.

The

completed

assembly

should

use

short

leads

for

connection

to

the

receiver

antenna

terminals.

Some

generator

cables

may

permit

the

circuit

block

to

be

attached

directly

to

the

cable

terminals.

300.0

From

52.320

Gnd.

500

Generator

O———4

MWA)

300-2

150.0.

Note:

All

resistors

are

1/2

Watt,

carbon

composition,

selected

on

a

DVM,

or

Wheatstone

bridge.

NOTE:

Models

R~B16L

and

T-526L

are

designed

to

tune

two

AM

frequency

bands.

See

tuning

ranges

listed

on

page

2.

In

model

R-316L,

band

switches

replace

FILTER

AM

and

FILTER

MPX.

In

model

T-526L,

band

switches

replace

DIM

switch

and

DE-EMP

switch.

TEST

CONTROL

INPUT

SETTINGS

TEST

EQUIPMENT

SCALE

SETTINGS

MEASURE

AT

POSITIVE

PROBE

NEGATIVE

PROBE

READINGS

TOL.

NPN

Output

transistor

Q807

&

Q817

None

Unit

"OFF"

Triplett

630A

Ohms

X

1000

+

Filter

cap

P809

P806

OK

HK

NPN

Output

transistor

Q810

&

Q820

None

Unit

"orp

Triplett

630A

Ohms

X

1000

P809

P806

-

Filter

cap

700

ohms

+1K

+200

ohms

Bt+

Supply

None

Volume

Unit

"Minimum"

"on"

Selector

ey

Triplett

630A

Volts

+

Filter

cap

Chassis

R316

-

26V

R326

-

32V

T526

-

24V

415%

Supply

None

Volume

Unit

"Minimum"

“on!

Selector

Ney

Triplett

630A

Volts

60

DC

Chassis

-

Filter

cap

R316

-

26V

R326

-

32V

+15%

Regulated

B+

Voltage

None

Volume

Unit

"Minimum"

"on

Selector

Ney

Triplett

630A

Volts

60

DC

P901

Regulator/

Supply

Board

Chassis

+13V

DC

+10%

Output

Offset

Voltage

None

Volume

Unit

"Minimum"

"on!

Selector

WAux"

DC

Milli-

Voltmeter

100mV

Speaker

#A

1

Speaker

#A

Wen

+100mV

max.

Max.

Bias

Check

None

None,

if

Unit

necessary,

Non!

adj.

padd-

ing

resis-

tor

across

R808

L.

Ch.

R830

R.

Ch.

Triplett

630A

12mA

DC

only

"E"

of

Q807

"E"

of

Q817

"Cc"

of

Q810

"C"

of

Q820

Adjust

pad

for

0.2mA

DC

nominal

Unit

temperature

approx.

100°F,

42°C

+100%

-0

AUDIO

TEST

PROCEDURE

TEST

INPUT

CONTROL

SETTINGS

TEST

EQUIPMENT

SCALE

MEASURE

AT

SETTINGS

|

SOSTTIVE

PROBE

NEGATIVE

PROBE

READINGS

Speaker

A

Audio

Level

8

ohm

1000

Hz

Aux.

Selector

"Aux

.

W

Mono

Switch

"Ty"

Volume

"Maximum"

AC

VIVM

Scope

30V

Speaker

A

pi

8

ohm

load

high

10V/DIV

Speaker

A

No"

8

ohm load

low

Adjust

input

signal

for

output

of:

R-316

-

12.7V

R-326

-

15.5V

(No

Clipping

per-

mitted)

+1

dB

-O

dB

Tape

1

Inputs

Tape

2

Inputs

Tape

1

in

1000

Hz

Tape

2

in

1000

Hz

Tape

Monitor

Switch

"Monitor"

(Volume

Maximum)

AC

VIVM

30V

Speaker

A

ip

8

ohm

load

high

Speaker

A

Ng

8

ohm

load

low

Same

as

above

Tape

Monitor

Output

Aux.

Selector

NAux

tt

Volume

"Minimum"

AC

VIVM

1V

Tape

Out

Ground

Output

of

0.15V

with

input

of

0.15V

Audio

Level

8

ohm

Aux.

1000

Hz

Selector

NAux

vt

Mono

Switch

"Mono"

Volume

"Maximum"

Spkr.

B.

On

VIVM

30V

Speaker

B

my

tt

8

ohm

load

high

Speaker

B

Na

8

ohm

load

low

Adjust

input

signal

for

output

of:

R-316

-

12,7V

R-326

-

15.5V

(No

Clipping

per-

mitted)

Check

Spkr.

A&B

:

Same

as

i

above

As

above

except

Spkr.

A&B

AC

VIVM

30V

Speakers

A

&

B

wpe

&

pu

8

ohm load

high

Speakers

A &

B

Ng"

8

ohm

load

low

Output

check

only,

check

at

low

level

Frequency

Response

Power

Amp

&

Tone

Control

Aux.

Tone

Con-

trol

"Flat"

Volume

"Maximum"

Adjust

bal-

ance

for

center

AG

VIVM

1V

Speaker

A

Mp

8

ohm

load

high

Speaker

A

Nau

8

ohm

load

low

Adjust

input

for

0

dB

(.775V)

output

(3

dB

down

points

should

be

below

10

Hz

and

above

30

kHz)

+1dB

AUDIO

TEST

PROCEDURE

TEST

INPUT

CONTROL

SETTINGS

TEST

EQUIPMENT

SCALE

SETTINGS

MEASURE

AT

POSITIVE

PROBE

NEGATIVE

PROBE

READINGS

TOL.

Frequency

Response

Phono

(RTAA)

Phono

1000

Hz

Selector

"Phono"

Keep

setting

listed

above

AC

VIVM

1V

Speaker

ty

8

ohm

load

A

high

Speaker

A

Natt

8

ohm

load

low

Adjust

input

for

0

dB

(.775V)

output

Note:

100

Hz

+12,5

dB

10

kHz

-13.0

dB

+1.5

dB

Tone

Control

Response

Aux.

1000

Hz

Selector

"NAux.

tt

Mode

Switch

"Mono!

Tone

Control

"Flat"

AC

VIVM

3V

Speaker

my

8

ohm

load

high

Speaker

A

"tg

8

ohm

load

low

Adjust

input

for

O

dB

(.775V)

output

Note:

@

100

Hz

Bass

boost

+10

dB

Bass

cut

-10

dB

@

10

kHz

Treble

boost

+10

dB

Treble

cut

-10

dB

+1.5

dB

+1.5

dB

Loudness

Compensa-

tion

Aux,

1000

Hz

Selector

WAux

."

Tone

Control

"Plat"!

Volume

"1

O'clock"

Loudness

Sw.

Non"

AC

VIVM

3V

Speaker

my

8

ohm

load

high

Speaker

A

Nat

8

ohm

load

low

Adjust

input

for

Q

dB.

Frequency,

to

10

kHz;

Note

3

dB

increase.

Frequency

to

100

Hz;

Note

7

dB

increase

+1

dB

+1

dB

Crosstalk

Aux.

Left

Channel

10

kHz

Selector

WAux

.

i

Tone

Control

"FLac"!

Comp.

Sw.

Nofet

Volume

"Maximum"

Mode

Switch

"Stereo"

AC

VIVM

3V

Speaker

Mp

8

ohm

load

high

Speaker

A

Ng"

8

ohm

load

low

Set

output

for

0

dB

Read

right

channel

output

35

dB

down

Min.

AUDIO

TEST

PROCEDURE

CONTROL

TEST

SCALE

MEASURE

AT

SETTINGS

EQUIPMENT

SETTINGS

POSITIVE

PROBE

NEGATIVE

PROBE

READINGS

TOL.

TEST

INPUT

Balance

Aux,

Selector

AC

VIVM

3V

Speaker

A

Speaker

A

Set

output

for

0

dB

Control

:

"Aux."

mp

Ng"

Left

Tone

Control

8

ohm

load

high

8

ohm

load

low

Note

45

dB

drop

in

+42

dB

Channel

"Flat"

output,

right

chan.

_

1000

Hz

Comp.

Sw.

Nore"

Volume

"Maximum"

Mode

Switch

ono"!

Balance

CCW

Balance

CW

"

Note

45

dB

drop

in

output,

left

chan.

42

dB

Harmonic*!

Aux.

Selector

AC

VIVM

30V

Speaker

A

Speaker

A

Adjust

input

for

Distortion

"Aux,"

ue

"gn

output

@

both

chan,

20

Hz*

|Mode

Switch

|

Harmonic

8

ohm

iload

high

8

ohm

load

low

R316

-

12.7V

1000

Hz

"Mono"

Distortion

R326

-

15.5V

20,000

Hz|

Balance

Analyzer

*(R316

&

"Center"

R326

-

Volume

40

Hz)

"Maximum"

0.5%

*Note:

Power

line

Voltage

120

VAC

<2.0%

line

THD.

When

transformer

primary

is

connected

for

other

than

120

Volts,

use

appropriate

supply

voltage.

Damping

Aux.

Selector

AC

VTVM

3.0V

Speaker

A

Speaker

A

Set

output

to

2,45V

Factor

1000

Hz

"Aux,"

"yf

Ng"

(+10

dB)

Mode

Switch

8

ohm

load

high

8

ohm

load

low

"Mono"

Remove

load

and

note

Balance

increase

in

level

"Center"

Volume

Max.

O.5

dB

"Maximum"

Scott R-316 Manuale utente

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