Hitachi TRK-8190E Manual de usuario

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HITACHI

SERVICE

MANUAL

©)

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YES

GENERAL

SECTION

Semi-conductors

Power

(Mains)

Supply:

Power

(Mains)

Consumption:

Dimensions:

Weight:

Power

output:

Speaker:

TUNER

SECTION

Circuit

System:

‘Tuning

Range:

Sensitivity:

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OCTET

ETT

TCT

———

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©@QOOO®

TRK-8190E,

E(BS)

No.

1328

KEY

ILLUSTRATIONS

(A)

LED

LEVEL

INDICATOR

(20)

BAND

SELECTOR

TAPE

COUNTER

@1)

TUNING

CONTROL

(3)

BUILT-IN

MICROPHONE

(LEFT)

(@2)

TELESCOPIC

ANTENNA

(AERIAL)

DOLBY

INDICATOR

(3)

STEREO

INDICATOR

(8)

FUNCTION

SELECTOR

OPERATION

INDICATOR

(For

POWER

INDICATOR

For

E(BS

RECORDING

LEVEL

CONTROL

petiole

(RIGHT)

BUILT-IN

MICROPHONE

(RIGHT)

(8)

RECORDING

MUTE

SWITCH

26)

PROGRAM

SWITCH

(9)

DOLBY

SWITCH

@7)

PROGRAM

RESET

SWITCH

(10)

AUTO/MANUAL

RECORDING

@8)

MIXING

VOLUME

CONTROL

CHANGE-OVER

SWITCH

@9)

MIXING

SOCKET

(30)

TIMER

STAND

BUTTON

)

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

43)

RIF/AFC

SWITCH

PLAYBACK

BUTTON

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:

Transistors:

Diodes:

LED:

Varicap:

Varistors

AC:

220V,

50Hz

[For

240V,

50Hz

[For

(BS)]

DC:

13.5V

(IEC

R20

Car:

Use

car

battery

adaptor

24W

540(W)

304(H)

166(D)

7.6

(with

batteries)

8W/CH

(Max.),

5W/CH

(THD

10%)

16cm,

3.2

ohms

cm,

ohms

FM/SW/MW/LW

4-band

superheterodyne

FM:

87.5

108

MHz

SW:

6.0

MHz

MW:

530

1605

kHz

LW:

150

350

kHz

FM:

(pra.)

2dB

(max.)

SW:

(pra.)

(max.)

MW:

(pra.)

(max.)}

LW:

(pra.)

(max.}

Intermediate

Frequency:

Antennas

(Aerials)

TAPE

RECORDER

Tape:

Tape

Speed:

Recording

System:

Erasing

System:

Frequency

Response:

S/N

(Signal

Noise

Ratio):

Cross

Talk:

Erase

Ratio:

Input

Sensitivity

and

Impedance:

Output

Level

and

Impedance:

Fast

Forward

Rewinding

Time:

Distortion:

Motor:

FM:

10.7

MHz

SW/MW/LW:

468

kHz

FM/SW:

Telescopic

antenna

External

antenna

MW/LW:

Ferrite-core

antenna

Cassette

tape

(C-30,

60,

90)

4.75

cm/s

bias,

kHz

erasing

Normal:

12,000

CrO,:

14,000

(Dolby

OFF)

(Dolby

ON)

Microphone:

0.4

mV,

500

ohms

Phone:

mV,

Kohms

Record/Playback(DIN):

6mV,

Kohms

Record/Playback(DIN}):

Ext.

speaker:

3.2

ohms

775

mV,

Kohms

110

sec

(Using

C-60)

1.5%

micromotor

CASSETTE

TAPE

RECORDER

WITH

FM/SW/MW/LW

RADIO

Feb.

1980

TRK-8190E,

E(BS)

SAFETY

PRECAUTION

The

following

precautions

should

observed

when

servicing.

Since

many

parts

the

unit

‘have

special

safety

characteristics,

always

use

genuine

Hitachi's

replacement

parts.

Especially

critical

parts

the

power

circuit

block

should

not

replaced

with

other

makes.

Critical

parts

are

marked

with

the

schematic

diagram

and

circuit

board

diagram.

Before

returning

repaired

unit

the

customer,

the

service

technician

must

thoroughly

test

the

unit

ascertain

that

completely

safe

operate

without

danger

electrical

shock.

DISASSEMBLY

Head

Cover

Rear

Case

Lift

the

head

cover

the

direction

arrow.

Cassette

Lid

Main

Chassis

Remove

nine

knobs

(Function,

Record

level,

Bass,

Treble,

Head

Cover

Volume,

Band,

Tuning).

Press

the

eject

button

release

the

engagement

the

Cassone

mechanism

and

cassette

lid.

Then

lift

the

battery

Press

the

eject

button

release

the

engagement

the

sidde-o%

the

niaih

chassis-

mechanism

and

cassette

lid.

Then

push

the

both

arms

cassette

lid

the

direction

arrow.

Screw

Driver

TRK-8190E,

E(BS)

Switch

and

Control

Board,

Loudness

Board

Loudness

board

Switch

and

Control

board

BT3x8

Cassette

Chassis,

LED

Level

Indicator

Board,

DRPS

Board

aime:

copra

rege

aeomoag

aga

Vege

LED

Level

Indicator

board

Cassette

chassis

TRK-8190E,

E(BS)

Tuner

Board,

Deck/AF/Power

Board

Deck/AF/Power

board

DIAL

CORD

STRINGING

Tuning

shaft

Turns)

IP:

POINTER:

Scale

plate

Setting

point

STRINGING

METHOD

Turn

the

pulley

fully

counterclockwise.

String

the

dial

cord

the

direction

arrow

(No.

17).

Set

the

pointer

setting

position.

TRK-8190E,

E(ES

LUBRICATION

Lubricate

one

two

drops

machine

oil

rotating

point

Lubrication

Oil

grease

lubricate

grease

sliding

point.

Lubricate

the

respective

parts

listed

below

once

every

1000

hours

once

year

under

normal

conditions

use.

Avoid

oiling

them

exces-

Capstan

shaft

bearing

Oil

sively,

rotation

may

become

irregular

because

oil

splashes.

Motor

shaft

bearing

Pressure

roller

bearing

ADJUSTMENT

TUNER

SECTION

Dummy

antenna

(aerial)

————.

752

—

Sw—

o—

8pF

3302

(75—R9)q

RgQ

SG's

output

impedance

adjustment

Setting:

Function

selector:

Radio

Mode

switch:

Mono

Band

selector:

Connection:

TP101

33KQ

Genescope

0.01

TP201

(R225)

Adjustment:

Genescope

tion:

Reading

Remarks

—

Turn

T202

fully

counterclockwise.

Maximum

fc:

Specified

center

frequency

the

ceramic

filter.

Reduce

the

level

the

genescope

make

one

waveform.

10.7

MHz

Highest

Adjust

1202

for

symmetrical

sinewave

curve)

output.

TRK-8190E,

E(BS)

(Covering

Tracking)

adjustment

Setting:

Function

selector:

Radio

®@

Mode

switch:

Mono

®@

Band

selector:

Connection:

Antenna

TP201(R225)

terminal

Dummy

Antenna

P11

Ground

Signal

generator

Dial

pointer

Adjust

Readi

Remarks

Frequency

Modulation

position

eading

87.25

MHz

;

Lowest

—_|

L103

coin

‘

Adjustment:

Repeat

and

MHz

L101

Tracking

400

30%

106

MHz

106MHz

CT101

Repeat

and

For

West

Germany

adjustment

Setting:

Function

selector:

Radio

Band

selector:

Connection:

Loop

Antenna

Ferrite

TP202

(R218)

Antenna

Genescope

Ground

0.01

Adjustment:

Genescope

P .

Dial

pointer

Readin

Frequency

Modulation

TRK-8190E,

E(BS

(Covering

Tracking)

adjustment

Setting:

Function

selector:

Radio

Band

selector:

Connection:

aol

Dummy

Antenna

Signal

generator

nal

generator

__Signat

generator

Dial

pointer

Covering

400

30%

18.5

MHz

Highest

Repeat

and

6.5

MHz

6.5

Tracking

6SMHz

400

30%

‘

MHz

CT151

Repeat

and

’

MW/LW

REF

(Covering

Tracking)

adjustment

Setting:

®@

Function

selector:

Radio

Band

selector:

Connection:

Loop

Antenna

bathe

TP202

Antenna

Adjustment:

Ground

Signal

generator

Dial

nie

Reading

Remarks

Frequency

Modulation

515

kHz

400Hz

30%

1650

kHz

‘bape

eat

cal

600

kHz

600

kHz

400Hz

30%

1400

kHz

1400

kHz

TRK-8190E,

E(BS)

Dial

pointer

Reading

are

‘soe

Covering

400

30%

Max.

and

160

kHz

160

kHz

sti

400

30%

330kHz

kHz

330

kHz

CT153

and

MPX

(Multiplex)

adjustment

Setting:

Function

selector:

Radio

Band

selector:

Mode

switch:

Stereo

Connection:

Connect

10yF

25V

electrolytic

capacitor

between

the

No.

1C301

and

ground.

Frequency

Counter

Ground

(P3)

Adjustment:

RT302

kHz

100

separation

adjustment

Setting:

Function

selector:

Radio

®@

Band

selector:

Mode

switch:

Stereo

Connection:

antenna

TP301,

TP302

terminal

(P1)

Stereo

Ground

TRK-8190E,

E(BS)

Adjustment:

Dial

pointer

Reading

L+R

(1kHz):

After

feeding

channel

and

pilot

signals,

adjust

RT301

tuning

level

adjustment

180mV,

30%

RT301

for

minimum

channel!

output.

Connect

the

VTVM

test

point

TP203.

Supply

the

sweep

signal

antenna

terminal

and

adjust

T203

that

the

‘mod.

output

maximum.

Pilot

(19kH2):

TAPE

RECORDER

SECTION

20mvV,

10%

The

following

adjustments

shall

performed

the

sequence

stated

after

the

heads,

the

pressure

roller

and

the

capstan

shaft

were

cleaned

with

cleaning

stick

moistered

alcohol.

Optimize

RT301

that

the

leak

level

the

channel

signal

equal

that

the

channel

signal.

Tape

speed

adjustment

(motor

speed)

Setting

;

Playback

mode

Connections

Record/playback

socket

(output)

Frequency

counter

MTT-111,

3000

(3150

Hz")

Ground

According

DIN

500.

Adjustment

Warm-up

the

unit

for

approx.

minutes.

Then

playback

the

Test

Tape

MTT-111,

3000

(3150

Hz*)

and

measure

the

speed

deviation

with

the

frequency

counter.

required,

adjust

the

semi-variable

resistor

the

motor

until

the

frequency

counter

shows

3000

bie

(3150

Hz").

The

measurement

shall

performed

the

middle

the

tape.

Head

azimuth

adjustment

Setting

Playback

mode

Connections

Record/playback

socket

(output)

MTT-316

MTT-216

12.5

kHz

Ground

Adjustment

Playback

the

Test

Tape

(MTT-316

MTT-216,

12.5

kHz)

and

adjust

the

azimuth

adjusting

screw

until

Maximum

output

obtained.

TRK-8190E,

E(BS)

Playback

gain

and

level

indicator

adjustment

Setting

Playback

mode

Tape

selector

(EQ)

Normal

Connection

TP401L,R

MTT-150

400

200

nwb/m

Ground

Adjustment

Playback

the

Dolby

Calibration

Tape(MTT-150,

400

200

nwb/m)

and

adjust

RT402L/R

that

the

voltage

the

test

points

TP401L/R

0.775V

dBm).

Then

adjust

RT404

L/R

that

the

Level

Indicator

Lamp

dB)

lights

up.

Adjustment

bias

leakage

Setting

Recording

mode

Tape

selector

(Bias)

CrO2

Connection

TP403L,

Ground

Adjustment

Set

the

unit

the

recording

mode.

Adjust

L401L,

that

outputs

test

points

TP403L,

are

minimum.

Adjustment

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

Tape

Audio

oscillator

Record/playback

socket

(output)

Ground

Adjustment

Adjust

RT401L/R

center

position.

Next,

turn

L402L/R

fully

clockwise.

Record

kHz

and

12.5

kHz

signal

with

level

—20

(at

test

point

TP401L/R)

Hitachi

tapre.

Then

playback

this

tape

and

adjust

RT401L/R

that

the

output

difference

within

dB.

=10.=

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