Sony TC-PB5 User manual

SPECIFICATIONS

Playback

System:

4-track

2-channel

stereo

Fast-forward

and

Rewind

Time:

Approx.

sec.

(with

C-60

cassette)

DOLBY

OFF

With

TYPE

cassette

(Sony

METALLIC)

peak

level

eWith

TYPE

cassette

(Sony

EHF)

peak

level

DOLBY

Improved

kHz,

above

kHz

Signal-to-noise

Ratio:

SAFETY-RELATED

COMPONENT

WARNING!!

MPONENTS

IDENTIFIED

SHADING

AND

MARK

THE

SCHEMATIC

DIAGRAMS,

EXPLODED

VIEWS

AND

THE

PARTS

LIST

ARE

CRITICAL

SAFE

OPERATION.

REPLACE

THESE

COMPONENTS

WITH

SONY

PARTS

WHOSE

PART

NUMBERS

APPEAR

SHOWN

THIS

MANUAL

SUPPLEMENTS

PUBLISHED

SONY,

mel

ATTENTION

COMPOSANT

AYANT

RAPPORT

SECURITE!

LES

COMPOSANTS

IDENTIFIES

PAR

UNE

TRAME

UNE

MARQUE

SUR

LES

DIAGRAMMES

SCHE-

MATIQUES,

VUES

EXPLOSEES

LISTE

;

LES

FONCTIONNEMENT.

REMPLACER

CES

—

PIECES

SONY—DGONT-

Frequency

Response:

DOLBY

OFF

With

TYPE

cassette

(Sony

METALLIC)

—

19,000

—

17,000

(+3

dB)

e@With

TYPE

cassette

(Sony

EHF)

—

18,000

—

16,000

(+3

dB)

With

TYPE

cassette

(Sony

HFX)

—

17,000

Wow

and

Flutter:

0.05%

WRMS

Inputs:

Microphone

inputs

(phone

jacks)

Sensitivity

0.4

(—65

dB)

For

low-impedance

microphone

Outputs:

Line

outputs

(phono

jacks)

Output

level

0.435

(—5

dB)

load

impedance

Load

impedance

over

10k

Headphone

output

Output

level

77.5

(—20

dB)

load

impedance

with

the

LINE

OUT/

HEADPHONES

control

MAX

—

Continued

page

—

)

DES

PIECES

SONT

CRITIQUES

POUR

SECURITE

DANS

MANUEL

GENERAL

Power

Requirements:

Power

Consumption:

Dimensions:

Weight:

120

ac,

(US,

Canadian

model)

220

ac,

50/60

(AEP

model)

240

ac,

50/60

(UK

model)

110,

120,

220,

240

50/60

model)

13W

Approx.

215

(w)

105

(h)

280

{(d)

(8%

(w)

(h)

11%

(d)

inches)

including

projecting

parts

and

controls

Approx.

3.5

Ibs

oz)

OdB

0.775V

Tape

Transport

Mechanism

Type:

TCM-110V6.

ant

Pee

ee ee

en ny

MODEL

IDENTIFICATION

—

Specification

Label

—

SONY.

STEREO

CASSETTE

PLAYER

SERIAL

NO.

MADE

KOREA

PRINTED

JAPAN

3-579-327-01

US,

Canadian

model:

120V 60Hz

13W

AEP

model:

220V~

50/60Hz

13W

model:

240V~

50/60Hz

13W

model:

110,

120,220,240V~

50/60Hz

13W

moveL

No.

|C-PBS

HOW

OPERATE

THE

SET

RANDOM

MEMORY

MUSIC

SENSOR

(RMS)

TC-PB5

MEMORY

Button

RMS

Display

Window

Button

and

CHECK

Button

DOWN

Button

DOWN

RMS

Button

MEMORY

Button

Press

memorize

the

displayed

selection

number.

When

the

number

memorized

has

been

selected

the

DOWN

button,

the

selection

number

blinks

the

RMS

display

window.

When

the

MEMORY

button

pressed,

the

selection

number

lights

steadily

for

about

three

seconds

show

that

the

number

has

been

memorized,

after

which

the

number

begins

blink

again.

selection

numbers

can

memorized.

you

want

repeat

playback

the

same

selection,

press

the

MEMORY

button

many

times

you

want

the

selection

played

back.

you

once

turn

off

the

unit

depress

the

button

RMS

but-

ton,

the

memory

will

cancelled.

CHECK

Button

Press

check

which

selection

numbers

have

been

memorized.

Every

time

this

button

pressed,

memorized

program

number

indicated.

When

this

button

kept

depressed,

the

memorized

selection

numbers

will

indicated

turn.

@After

the

last

selection

number

memorized

indicated,

the

number

blinks

for

about

three

seconds,then

lights

steadily.

check

during

the

RMS

play,

first

stop

the

tape,

then

press

this

button.

RMS

Button

Press

get

ready

for

RMS

operation.

When

the

RMS

button

pressed,

“0”

displayed.

you

wish

cancel

the

memorized

selection

numbers,

press

this

button

again.

Button

and

DOWN

Button

Press

select

the

selection

number.

“4”

means

the

first

selection

recorded

the

cassette

tape.

Every

time

the

button

pressed,

the

selection indicated

in-

creases

one

‘15”,

after

which

returns

“1”.

Every

time

the

DOWN

button

pressed,

the

selection

indicated

decreases

one

‘'1”",

after

which

returns

“15”.

RMS

Display

Window

The

selection

number

selected

displayed

this

window.

TC-PB5

BASIC

RMS

OPERATION—For

example:

play

selection

three

first,

selection

six

second

and

selection

one

third.

@First,

insert

cassette

and

depress

the

POWER

switch

ON.

Button

Display

window

RMS

eee

Press

three

0%:

times.

once

Illuminates

for

about

three

seconds.

MEMORY

Memorizing

the

selection

Selection

After

step

blinks

ris

Press

three

times.

see

selection

once

MEMORY

illuminates

for

about

three

seconds.

Selection

Memorizing

the

1St

selection

After

step

blinks

DOWN

Press

five

times.

Selection

once

MEMORY

IHuminates

for

about

three

seconds.

The

1St

selection

memorized

Selection

check

which

selection

numbers

have

been

memorized.

at]

Selection

Press

each

time

keep

depressed:

Selection

this

way,

selection

numbers

can

memorized.

When

selections

are

memorized,

the

last

selection

number

blinks

rapidly

show

that

selection

can

memorized.

The

3°95

selection

memorized.

The

selection

memorized.

blinks

three

times

E—-H-ai—

Selection

Selected

selection

“1”

begins

blink,

indicating

that

you

can

memorize

selection

numbers.

Shut-Off

Detection

and

Precaution

Repairing

this

set,

the

shut-off

detection

made

optically.

The

take-up

reel

spindle

has

the

five

holes.

The

light

the

lamp

received

the

light

guide

inter-

mettently

applied

the

photo

transistor

means

the

rotation

the

reel

spindle.

The

pulse

generated

the

photo

transistor

Q803

amplified

Q801

and

fed

the

mechanism

control

IC302.

Accordingly,

when

necessary

repair

the

unit

after

removing

the

ornamental

plate,

connect

oscillator

the

terminal

IC303

shown

below,

not

operate

the

shut-off

mechanism.

light

guide

“ote

photo

transistor

~~!

“N

“XN

10Hz

—

nes)

10dB

oe,

0.01uF

OSC

ornamental

plate

take-up

reel

spindle

hole

MAIN

BOARD

(Conductor

side)

Handling

Precautions

for

MOS

ICs

Generally,

the

insulation

resistance

the

oxide

layer

MOS

structures

very

high,

and

the

oxide

layer

very

thin.

Because

this,

possible

that

the

static

voltages

usually

present

clothes

and

the

human

body

will

enough

generate

potential

difference

across

the

insulator,

high

enough

cause

breakdown

the

insulating

layer.

The

following

precautions

should

taken

while

handling

these

ICs.

(Particular

care

should

taken

under

conditions

low

humidity.)

Precautions

Replacing

MOS

ICs

Store

newICs

inserting

them

into

urethane-

polyester

cushion

(which

somewhat

conduc-

tive),

wrapping

aluminum

foil,

that

all

the

pins

are

the

same

potential.

(The

ICs

should

stored

that

manner

until

mounted

the

circuit

board.)

Fig.

partially

conductive

unrethane-polyester

cushion

Fig.

aluminum

foil

Check

the

soldering

iron

for

possible

power-line

leakage

current.

Make

sure

that

there

leakage

path

connecting

ohmmeter

the

tip

the

soldering

iron

and

the

plug

shown

Fig.

there

leakage

path,

use

some

other

soldering

iron.

VOM

(2.x

10,000

range)

Equalize

any

potential

difference

between

the

clothes,

the

tools

use,

the

work

bench,

the

set

being

worked

on,

and

the

packaged

touching

them

all

succession

with

the

hands

conductive

wire

tool.

The

following

are

effective

methods

for

handl-

ing

ICs

that

remove

the

potential

difference

across

the

oxide

layer.

Use

paper

clip

modified

soldering

ina

wire

braid

insert.

wire

braid

clip

soldered

sli

Make

sure

that

there

Fig.

solder

the

inside.

clip

partially

conductive

urethane-polyester

Fig.

cushion

aluminum

oll

wire

braid

clip

(ooo

res

Make

sure

that

all

the

pins

are

contact

with

the

wire

braid

(all

the

pins

will

then

the

same

Fig.

potential.).

TC-PB5

Take

short

length

fine

bare

wire

and

Precaution

while

Checking

C-MOS

ICs

wind

around

the

that

shorts

all

the

pins

the

IC,

while

still

the

urethane-

polyester

cushion

aluminum

foil.

This

ensures

that

all

the

pins

are

the

same

The

C-MOS

ICs

(Complementary

MOS)

are

MOS

ICs

that

have

their

output

sections

made

N-channel

and

P-channel

push-pull

stages

increase

their

speed

operation.

the

output

terminal

potential.

these

ICs

comes

into

contact

with

B+

B-

voltage,

[aspondes

hookup

then

the

FET

which

that

time

will

either

wire,

etc.)

become

shorted

open.

This

valid

for

all

the

output

sections

that

are

connected

together

the

interconnections.

Even

the

circuits

that

are

physically

separated

(and

not

the

same

board)

can

destroyed

simultaneously.

Example:

partially

conductive

urethane-polyester

cushion

aluminum

foil

this

line

grounded,

touches

B+

B-

bus...,

the

output

stage

this

will

destroyed.

Fig.

When

necessary

handle

the

with

the

fingers,

not

touch

any

pin,

and

hold

the

ends

its

plastic-package

case

shown

Fig.

St,

Fig.

Method

Mounting

Insert

the

while

holding

with

the

modified

clip,

and

solder

all

the

pins

with

the

clip

still

shorting

the

pins.

(Similarly,

solder

all

the

pins

while

the

bare

shorting

wire

still

wound

around

them.).

Remove

the

clip

the

bare

shorting

wire

only

after

all

the

pins

have

been

soldered.

meg pee

C-PB5

SECTION

OUTLINE

BLOCK

DIAGRAM

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)

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49700

TC-PB5

SECTION

DISASSEMBLY

Note:

the

disassembly

procedure

the

numerical

order

given.

BOTTOM

PLATE

bottom

plate

TOP

COVER

top

cover

ty,

BOLay

Mic

Moun,

Mat

sae

c-PBs

CASSETTE

LID

Press

the

EJECT

knob.

cassette

lid

MECHANISM

SECTION-1

Remove

the

mechanism

section.

Remove

the

lead

wires

from

cord

stopper.

lead

wires

—10—

TC-PB5

SWITCH

BOARD

PTPWH3

switch

board

MECHANISM

SECTION-2

mechanism

section

front

panel

‘C-PB5

SECTION

ADJUSTMENTS

3-1.

MECHANICAL

ADJUSTMENTS

PRECAUTION

Clean

the

following

parts

with

denatured-

alcohol-moistened

swab:

playback

head

pinch

roller

tape

guide

rubber

belts

capstan

idlers

Demagnetize

the

playback

head

with

head

demagnetizer.

not

use

magnetized

screwdriver

for

the

adjustments.

After

the

adjustments,

apply

suitable

locking

compound

the

parts

adjusted.

The

adjustments

should

performed

with

the

tated

power

supply

voltage

unless

otherwsie

noted.

Torque

Measurement

and

Back

Tension

Torque

Adjustment

Torque

35—55

g-cm

CQ102C

(0.48-0.76

oz-inch)

2.5—4.5

g-cm

Poe

(0.04—0.06

0z-inch)

2. If

the

specified

back-tension

torque

not

ob-

tained,

change

the

hooking

position.

supply-reel

spindle

ack-tension

lever

weaker

«<«———w>

stronger

Change

the

hooking

position.

(1g-cm

per

one

slide.)

—12—

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