Hitachi Trk-8190e User manual

©)

HITACHI

SERVICE

MANUAL

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GENERAL

SECTION

Semi-conductors

:

Power

(Mains)

Supply:

Power

(Mains)

Consumption:

Dimensions:

Weight:

Power

output:

Speaker:

TUNER

SECTION

Circuit

System:

‘Tuning

Range:

Sensitivity:

Yy

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OCTET

ETT

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———

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©@QOOO®

TRK-8190E,

E(BS)

No.

1328

KEY

TO

ILLUSTRATIONS

(A)

LED

LEVEL

INDICATOR

(20)

BAND

SELECTOR

@

TAPE

COUNTER

@1)

TUNING

CONTROL

(3)

BUILT-IN

MICROPHONE

(LEFT)

(@2)

TELESCOPIC

ANTENNA

(AERIAL)

(4

DOLBY

NR

INDICATOR

(3)

FM

STEREO

INDICATOR

=

(8)

FUNCTION

SELECTOR

OPERATION

INDICATOR

(For

E)

©

ea

ee

AC

POWER

INDICATOR

For

E(BS

(>

RECORDING

LEVEL

CONTROL

oD

petiole

(RIGHT)

5)

BUILT-IN

MICROPHONE

(RIGHT)

(8)

RECORDING

MUTE

SWITCH

26)

PROGRAM

SWITCH

(9)

DOLBY

NR

SWITCH

@7)

PROGRAM

RESET

SWITCH

(10)

AUTO/MANUAL

RECORDING

@8)

MIXING

VOLUME

CONTROL

CHANGE-OVER

SWITCH

@9)

MIXING

SOCKET

(30)

TIMER

STAND

BY

BUTTON

)

~

8)

G

)

es

MODE

SWITCH

TAPE

SELECTOR

SWITCH

(BIAS)

TAPE

SELECTOR

SWITCH

(EQUALIZER)

LEVEL

INDICATOR

SELECTOR

HEADPHONE

SOCKET

PAUSE

BUTTON

STOP

BUTTON

FAST

FORWARD/CUE

BUTTON

2O@OOE

wo

yy

43)

RIF/AFC

SWITCH

®

PLAYBACK

BUTTON

(6

BASS

CONTROL

(36)

REWIND/REVIEW

BUTTON

(7)

TREBLE

CONTROL

(7)

RECORD

BUTTON

(18)

VOLUME

CONTROL

(LEFT)

(8)

EJECT

BUTTON

(19)

VOLUME

CONTROL

(RIGHT)

(9)

LOUDNESS

SWITCH

SPECIFICATIONS

1C’s:

11

Transistors:

33

Diodes:

28

LED:

18

Varicap:

1

Varistors

:

2

AC:

220V,

50Hz

[For

E]

240V,

50Hz

[For

E

(BS)]

DC:

13.5V

(IEC

R20

x

9)

Car:

Use

car

battery

adaptor

24W

540(W)

x

304(H)

x

166(D)

mm

7.6

kg

(with

batteries)

8W/CH

(Max.),

5W/CH

(THD

10%)

16cm,

3.2

ohms

x

2

5

cm,

4

ohms

x

2

FM/SW/MW/LW

4-band

superheterodyne

FM:

87.5

to

108

MHz

SW:

6.0

to

18

MHz

MW:

530

to

1605

kHz

LW:

150

to

350

kHz

FM:

10

dB

(pra.)

2dB

(max.)

SW:

25

dB

(pra.)

20

dB

(max.)

MW:

42

dB

(pra.)

30

dB

(max.)}

LW:

52

dB

(pra.)

40

dB

(max.}

Intermediate

Frequency:

Antennas

(Aerials)

:

TAPE

RECORDER

Tape:

Tape

Speed:

Recording

System:

Erasing

System:

Frequency

Response:

S/N

(Signal

to

Noise

Ratio):

Cross

Talk:

Erase

Ratio:

Input

Sensitivity

and

Impedance:

Output

Level

and

Impedance:

Fast

Forward

or

Rewinding

Time:

Distortion:

Motor:

FM:

10.7

MHz

SW/MW/LW:

468

kHz

FM/SW:

Telescopic

antenna

or

External

antenna

MW/LW:

Ferrite-core

antenna

Cassette

tape

(C-30,

60,

90)

4.75

cm/s

AC

bias,

57

kHz

AC

erasing

Normal:

50

~

12,000

Hz

CrO,:

50

~

14,000

Hz

50

dB

(Dolby

NR

OFF)

60

dB

(Dolby

NR

ON)

50

dB

65

dB

Microphone:

0.4

mV,

500

ohms

Phone:

3

mV,

50

Kohms

Record/Playback(DIN):

6mV,

12

Kohms

Record/Playback(DIN}):

Ext.

speaker:

3.2

ohms

775

mV,

5

Kohms

110

sec

(Using

C-60)

1.5%

DC

micromotor

CASSETTE

TAPE

RECORDER

WITH

FM/SW/MW/LW

RADIO

Feb.

1980

|

TRK-8190E,

E(BS)

|

SAFETY

PRECAUTION

The

following

precautions

should

be

observed

when

servicing.

1.

Since

many

parts

in

the

unit

‘have

special

safety

always

use

genuine

Hitachi's

replacement

parts.

Especially

critical

parts

in

the

power

circuit

block

should

not

be

replaced

with

other

makes.

Critical

parts

are

marked

with

A

in

the

schematic

diagram

and

circuit

board

diagram.

2.

Before

returning

a

repaired

unit

to

the

customer,

the

service

technician

must

thoroughly

test

the

unit

to

ascertain

that

it

is

completely

safe

to

operate

without

danger

of

electrical

shock.

DISASSEMBLY

1.

Head

Cover

3.

Rear

Case

Lift

up

the

head

cover

in

the

direction

of

arrow.

Cassette

Lid

4.

Main

Chassis

Remove

nine

knobs

(Function,

Record

level,

Bass,

Treble,

Pe

Head

Cover

Volume,

Band,

Tuning).

Press

the

eject

button

to

release

the

engagement

of

the

2;

Cassone

Ge

mechanism

and

cassette

lid.

Then

lift

up

the

battery

Press

the

eject

button

to

release

the

engagement

of

the

sidde-o%

the

niaih

chassis-

mechanism

and

cassette

lid.

Then

push

the

both

arms

of

cassette

lid

in

the

direction

of

arrow.

©

Screw

Driver

|

TRK-8190E,

E(BS)

5.

Switch

and

Control

PC

Board,

Loudness

PC

Board

Loudness

PC

board

Switch

and

Control

PC

board

BT3x8

6.

Cassette

Chassis,

LED

Level

Indicator

PC

Board,

DRPS

PC

Board

aime:

copra

rege

al

aeomoag

e

aga

Oa

A

a

A

|

RH

Vege

HO

3

|

LED

Level

Indicator

PC

board

Cassette

chassis

TRK-8190E,

E(BS)

|

7.

Tuner

PC

Board,

Deck/AF/Power

PC

Board

Deck/AF/Power

PC

board

DIAL

CORD

STRINGING

Tuning

shaft

(2

Turns)

IP:

|

POINTER:

Scale

plate

Setting

point

STRINGING

METHOD

1.

Turn

the

pulley

fully

counterclockwise.

2.

String

the

dial

cord

in

the

direction

of

arrow

(No.

1

~

17).

3.

Set

the

pointer

to

setting

position.

TRK-8190E,

E(ES

LUBRICATION

Lubricate

one

or

two

drops

of

machine

oil

to

rotating

point

Lubrication

Oil

or

grease

or

lubricate

grease

to

sliding

point.

Lubricate

the

respective

parts

listed

below

once

every

1000

hours

or

once

a

year

under

normal

conditions

of

use.

Avoid

oiling

them

exces-

Capstan

shaft

bearing

Oil

sively,

or

rotation

may

become

irregular

because

of

oil

splashes.

Motor

shaft

bearing

Pressure

roller

bearing

ADJUSTMENT

TUNER

SECTION

Dummy

antenna

(aerial)

FM

————.

752

—

Sw—

o—

8pF

3302

(75—R9)q

RgQ

Rg

:

SG's

output

impedance

1.

FM

IF

adjustment

Setting:

@

Function

selector:

Radio

@

Mode

switch:

Mono

@

Band

selector:

FM

Connection:

TP101

33KQ

Genescope

0.01

nF

TP201

(R225)

Adjustment:

Genescope

Oe

tion:

Reading

Remarks

—

Turn

T202

fully

counterclockwise.

+

Maximum

1)

fc:

Specified

center

frequency

of

the

ceramic

filter.

2)

Reduce

the

level

of

the

genescope

to

make

one

waveform.

10.7

MHz

Highest

Adjust

1202

for

a

symmetrical

sinewave

(S

curve)

output.

_

TRK-8190E,

E(BS)

-

2.

FM

RF

(Covering

&

Tracking)

adjustment

Setting:

®

Function

selector:

Radio

®@

Mode

switch:

Mono

®@

Band

selector:

FM

Connection:

FM

Antenna

TP201(R225)

terminal

==

Dummy

Antenna

7

x

P11

Ground

Signal

generator

Dial

pointer

i

Adjust

Readi

Remarks

Frequency

Modulation

position

ju

eading

87.25

MHz

;

El

:

|

Lowest

—_|

t

|

L103

|

HS

coin

=

‘

a

o

Adjustment:

3

|

Repeat

1

and

2.

4

90

MHz

90

MHz

L101

Tracking

400

Hz

30%

5

106

MHz

106MHz

CT101

6

|

Repeat

4

and

5.

*

For

West

Germany

3.

AM

IF

adjustment

Setting:

@

Function

selector:

Radio

@

Band

selector:

MW

Connection:

Loop

Antenna

Ferrite

TP202

(R218)

Antenna

Genescope

i$

Ground

|

J

0.01

uF

Adjustment:

Genescope

P .

Dial

pointer

Readin

Frequency

Modulation

ee

ST

et

|

TRK-8190E,

E(BS

4,

SW

RF

(Covering

&

Tracking)

adjustment

Setting:

@

Function

selector:

Radio

@

Band

selector:

SW

Connection:

©

Ee

aol

Dummy

Antenna

a

|

Signal

generator

|

nal

generator

|

__Signat

generator

|

7

Dial

pointer

Covering

400

Hz

30%

18.5

MHz

Highest

Repeat

1

and

2.

6.5

MHz

6.5

MH

Tracking

|

6SMHz

|

400

Hz

30%

‘

16

MHz

16

MHz

CT151

Repeat

4

and

5.

’

5.

MW/LW

REF

(Covering

&

Tracking)

adjustment

Setting:

®@

Function

selector:

Radio

@

Band

selector:

MW

or

LW

Connection:

Loop

Antenna

bathe

TP202

Antenna

Adjustment:

Ground

1)

MW

Signal

generator

Dial

:

nie

ah

.

j

Reading

Remarks

Frequency

Modulation

515

kHz

i

+;

400Hz

30%

|

1650

kHz

‘bape

eat

cal

600

kHz

600

kHz

+

400Hz

30%

,

1400

kHz

1400

kHz

ot

'

TRK-8190E,

E(BS)

|

Dial

pointer

Reading

are

‘soe

=

Covering

400

Hz

30%

Max.

|

2)

LW

Pa

1

and

2.

160

kHz

160

kHz

HA

sti

400

Hz

30%

|

330kHz

|

kHz

330

kHz

CT153

a

4

and

5.

6.

FM

MPX

(Multiplex)

adjustment

Setting:

@

Function

selector:

Radio

@

Band

selector:

FM

@

Mode

switch:

Stereo

Connection:

Connect

a

10yF

25V

electrolytic

capacitor

between

the

No.

2

P8

of

1C301

and

ground.

Sf

Frequency

Counter

Ground

(P3)

Adjustment:

a

RT302

19

kHz

+

100

Hz

7.

FM

separation

adjustment

Setting:

®

Function

selector:

Radio

®@

Band

selector:

FM

@

Mode

switch:

Stereo

Connection:

FM

antenna

TP301,

TP302

terminal

(P1)

\

FM

Stereo

SG

:

©

Pt

Ground

|

TRK-8190E,

E(BS)

Adjustment:

tp

g

Dial

pointer

Reading

L+R

(1kHz):

1)

After

feeding

in

of

R

channel

and

pilot

signals,

adjust

RT301

8.

FM

tuning

level

adjustment

180mV,

30%

RT301

for

a

minimum

L

channel!

output.

Connect

the

VTVM

to

test

point

TP203.

Supply

the

sweep

signal

to

FM

antenna

terminal

and

adjust

T203

so

that

the

‘mod.

output

is

maximum.

Pilot

(19kH2):

TAPE

RECORDER

SECTION

20mvV,

10%

The

following

adjustments

shall

be

performed

in

the

sequence

stated

after

the

heads,

the

pressure

roller

and

the

capstan

shaft

were

cleaned

with

a

cleaning

stick

moistered

in

alcohol.

2)

Optimize

RT301

so

that

the

leak

level

of

the

L

channel

signal

is

equal

to

that

of

the

R

channel

signal.

1.

Tape

speed

adjustment

(motor

speed)

Setting

;

Playback

mode

Connections

:

Record/playback

socket

(output)

Frequency

counter

MTT-111,

3000

Hz

\

(3150

Hz")

Ground

*

According

to

DIN

45

500.

Adjustment

:

Warm-up

the

unit

for

approx.

20

minutes.

Then

playback

the

Test

Tape

MTT-111,

3000

Hz

(3150

Hz*)

and

measure

the

speed

deviation

with

the

frequency

counter.

If

required,

adjust

the

semi-variable

resistor

in

the

motor

until

the

frequency

counter

shows

3000

Hz

bie

Hz

(3150

Hz").

The

measurement

shall

be

performed

at

the

middle

of

the

tape.

2.

Head

azimuth

adjustment

Setting

:

Playback

mode

Connections

:

Record/playback

socket

(output)

|

MTT-316

or

MTT-216

12.5

kHz

\

Ground

Adjustment

:

Playback

the

Test

Tape

(MTT-316

or

MTT-216,

12.5

kHz)

and

adjust

the

azimuth

adjusting

screw

until

Maximum

output

is

obtained.

-

|

TRK-8190E,

E(BS)

|

3.

Playback

gain

and

level

indicator

adjustment

Setting

:

Playback

mode

@

Tape

selector

(EQ)

:

Normal

Connection

:

TP401L,R

MTT-150

\

400

Hz

200

nwb/m

Ground

Adjustment

:

Playback

the

Dolby

Calibration

Tape(MTT-150,

400

Hz

200

nwb/m)

and

adjust

RT402L/R

so

that

the

voltage

at

the

test

points

TP401L/R

is

0.775V

(0

dBm).

Then

adjust

RT404

L/R

so

that

the

Level

Indicator

Lamp

(0

dB)

lights

up.

4.

Adjustment

of

bias

leakage

Setting

:

Recording

mode

@

Tape

selector

(Bias)

:

CrO2

Connection

:

TP403L,

R

~

Ground

Adjustment

:

Set

the

unit

to

the

recording

mode.

Adjust

L401L,

R

so

that

outputs

at

test

points

TP403L,

R

are

minimum.

5.

Adjustment

of

bias

current

Setting

:

Recording

mode

@

Tape

selector

(Bias)

:

Normal

@

Tape

selector

(EQ)

:

Normal

@

RT403L/R

:

Center

position

Frequency

counter

Connection

:

Record/playback

socket

(input)

Hitachi

UD

Tape

Audio

oscillator

Record/playback

socket

(output)

Ground

Adjustment

:

1)

Adjust

RT401L/R

to

center

position.

2)

Next,

turn

L402L/R

fully

clockwise.

3)

Record

a

1

kHz

and

a

12.5

kHz

signal

with

a

level

of

0

dB

—20

dB

(at

test

point

TP401L/R)

on

Hitachi

UD

tapre.

Then

playback

this

tape

and

adjust

RT401L/R

so

that

the

output

difference

is

within

+2

dB.

=10.=

|

TRK-8190E,

E(BS,

6.

Recording/playback

output

adjustment

Setting

:

Recording/playback

mode

@

Tape

selector

(Bias)

:

Normal

@

Tape

selector

(EQ)

:

Normal

Record/playback

Frequency

counter

socket

(input)

Connection

:

Hitachi

UD

tape

Audio

Oscillator

Record/playback

socket

(output)

Ground

Adjustment

:

Record

a

400

Hz

signal

(0

dB)

on

Hitachi

UD

tape.

Then

playback

this

tape

and

adjust

RT403L/R

so

that

the

playback

output

is

0

dB+1

dB.

7.

Dolby

NR

check

Setting

:

Recording

mode

Connection

:

Record/playback

socket

(input)

TP401L,

R

Frequency

counter

O

oscillator

Ground

Adjustment

:

Set

the

unit

to

the

recording

mode.

Supply

a

5

kHz

signal

to

the

Record/playback

socket

(input)

to

obtain

the

level

of

—

30.4

dBm+0.1

dB

at

test

points

TP401L,

R.

Confirm

that

the

level

is

boosted

by

8+0.2

dB

when

the

Dolby

NR

switch

is

set

to

ON.

8.

Adjustment

of

the

DRPS

operation

level

Setting

:

Playback

mode

Connection

:

Unit

TMT

-6261

(500

Hz

—40

dB,

—35

dB)

Adjustment

:

Load

the

test

tape

TMT-6261

(500

Hz

—40

dB,

—35

dB)

and

set

the

unit

to

the

DRPS

mode

from

the

playback

mode.

Adjust

RT701

so

that

the

number

displayed

by

the

program

indicator

decreases

by

one

when

the

level

of

the

test

tape

Changes

from

+-35

dB

to

—40

dB.

hess

_

TRK-8190E,

E(BS)

|

INSPECTION

a

TT

Rewind

Fast

Forward

Microswitch

Timing

Adjustment

Move

the

switch

holder

in

the

direction

of

the

arrow

(«=®)

and

adjust

so

that

the

microswitch

is

turned

ON

when

the

middle

idler

is

pressed

against

the

reel

disk

during

rewind

(review)

operation.

Middle

Idler

Micro-

switch

Operation

Buttons

Micro-

Switch

Holder

switch

oe

TRK-8190E,

E(BS)

Adjustment

Parts

Location

LW—RF

(Covering)

Lis5

L153

SW—RF

(Tracking)

MW—RF

(Covering)

|

SW—RF

(Covering)

LW—RF

(Tracking)

Ci]

ae

——

TP302

cT153

TP301

R306L

FM—RF

(Tracking)

R306R

MW-—RF

(Tracking)

|

P3

©

MW-—RF

(Covering)

|

FM

Separation

_

|

TP202

|

ANA—O

|

ed

[FM

TUNING

LeveL

|

R218

C209

1C201

o—+

AN253

20

FM—Multiplex

pact

R225 7201

1202

TUNER

PC

Board

=

73)

TRK-8190E,

E(BS)

DRPS

sensitivity

DRPS

PC

Board

1C401R

IC401L

RT401L

RT401R

DECK/AF/POWER

PC

Board

~14-—

TRK-8190E,

E(BS)

|

SCHEMATIC

DIAGRAM

(TUNER

SECTION)

DIOS

QI!

dlo02

Ql02

DIOS

QI103

DIO4

Q20!

TC20!

0203

0204

D205,

D206

|

1S2473

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TRK-8190E,

E(BS)

Note

1,

Voltage

measured

at

base

of

chassis

with

minimum

volume

control

and

no

signal.

2.

Nomenclature

of

Resistors

and

Capacitors.

a-e--

Circuit

No.

No

indicated

(Ohm)

M

:

1000

ka

No

indicated

+5%

K

:

+10%

M

:

+20%

No

indicated

%W

No

indicated

Carbon

film

RC

:

Composition

RW

:

Wire

wound

RS

:

Oxide

metal

film

RN

:

Fixed

metal

film

Value

ii

olerance

Stee

Wattage

Circuit

No.

|”

No

indicated

P: PF

No

indicated

:+

5%

+

oot

4

1

£20%

001*-M----—

Tolerance

:

+80%,

—20%

|

+

£0.5pF

+

£0.25pF

Ceramic

Electrolitic

Mylar

Polyester

+i

C102

—T0.4/16-

4.

J

Voltage

No

indicated

SOWV

3.

Be

sure

to

make

your

orders

of

resistors

and

capacitors

with

value,

voltage,

tolerance

and

sort.

4.

When

replacing

capacitors

marked

with,

use

specified

ones

stated

on

parts

list

since

required

temperature

characteristics.

CIRCUIT

BOARD

DIAGRAM

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se

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+

£

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C46

3L

(DOLBY

NR)

(VU/TUNING)

LED40!

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TRK-8190E,

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fa

9D

TRK-8190E,

E(BS)

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DECK/AF/POWER

—

24

—-

_

23

—

TRK-8190E,E(BS)

|

TRK-8190E,

E(BS)

|

.

|

WIRING

DIAGRAM

|

SWI

TCH/CONTROL

:

|

LOUDNESS

:

=

.

saan

™

rrr

:

omy

:

Les

"

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LEVEL

INDICATOR

SOLENOID

i

BUILT-IN

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is

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25

—

26

—

Hitachi TRK-8190E User manual

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