Onkyo K-05w User manual

ONKYO

SERVICE

MANUAL

©

®©*0

STEREO

CASSETTE

TAPE

DECK

MODEL

K-05W

SAFETY-RELATED

COMPONENT

WARNING!!

COMPONENTS

IDENTIFIED

BY

MARK

“4%

ON

THE

SCHEMATIC

DIAGRAM

AND

IN

THE

PARTS

LIST

ARE

CRITICAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

REPLACE

THESE

COM.-

PONENTS

WITH

ONKYO

PARTS

WHOSE

PARTS

NUMBERS

APPEAR

AS

SHOWN

IN

THIS

MANUAL.

MAKE

LEAKAGE-CURRENT

OR

RESISTANCE

MEASUREMENTS

TO

DETERMINE

THAT

EXPOSED

PARTS

ARE

ACCEPTABLY

IN-—

SULATED

FROM

THE

SUPPLY

CIRCUIT

BEFORE

RETURNING

THE

APPLIANCE

TO

THE.

CUSTOMER.

ONKYO.

AUDIO

COMPONENTS

SPECIFICATIONS

Track

System:

4-fracks,

2-channels

Erasing

System:

AC

erase

Tape

Speed:

4.8

cm/sec.

(1-7/8

i.p.s.)

9.6

cm/sec.

(3-3/4

i.p.s.)

(high

speed

dubbing}

Wow

and

Flutter:

0.07%

(WRMS)

0.15%

W

PEAK

Frequency

Response:

20-

15,000Hz

(Normai)

(30

—

14,000Hz

+3dB)

20

—

16,000Hz

(High)

(30

—

15,000Hz

+3dB)

20

~

17,000Hz

(Metal)

(30

—

16,000Hz

+3d8)

S/N

Ratio:

Dolby

NRA

off:

58dB

(metal

position

tape)

A

noise

reduction

of

10dB

above

5kHz

and

5dB

at

1kHzis

possible

with

Dolby

B

NA.

|

A

noise

reduction

of

20dB

at

5kHz

is

possible

with

Dolby

©

NR.

Input

Jacks:

Line

IN:

2

Input

sensitivity:

BOmV

Input

impedance:

50

kohms

Outputs:

Line

OUT:

2

Standard

output

level:

500mV

(OdB)

Optimum

load

impedance:

over

50

kohms

Motors:

DC

servo

motor

x

2;

DC

motor

x2

Heads:

REC/PB:1

PB:

1

ERASE:

1

Power

Supply

Rating:

European

models:

AC

230V,

50Hz

U.S.A.

and

Canadian

models:

AC

120V,

60Hz

U.K.

and

Australian

models:

AC

240V,

50Hz

Worldwide

models:

AC

120V

and

220V

switchable,

50/60Hz

Power

Consumption:

3Qwalls

Dimensions:

275

(W}

x

113

(RH)

x

304

(D})

mm

(10-13/16"

x

4-7/16"

x

12")

Weight:

4,7kg.

(10.4lbs.)

BLOCK

DIAGRAM

LINE

QUT

&

|

LINE

Q203

@Q204

C

CONT.AM

DOLBY

NR

Q601

ne

os

oe

‘

a

Q602

@202

Q209

er

es

i

RESET

SP

o205

3,

28

15,

16

=

SEARCH

asot

OPARAT

ION

IND.LED

DECK-A

D739

0731

0732

D733

D734

D735

0736

D737

D738

OPARATION

18

EXP

DECK—B

CPU

P

REC

MUT

ING

3

nae

5

a}

OPARATION

Q401

Q402

Q701

Lid

w

.

CH

DECK—A

Ns/Hs

ADJ

CONT

.&

MECHA

DECK—-B

Ns/Hs

ADJ

———

=

pe

Es

METAL,

B—70/420.

Ns/Hs

i.

CONT.

&

MECHA

Q404

ee

r

Q405

a406

MULTIPLEXER

<fROTATION

SENSOR

x

3

Q407

@408

st

tae

ny

Q715

Q716

0717

Q718

Q411

BIAS

CONT.

OPERATION

DESCRIPTION

1)

OUTLINE

-AS

a

mechanism

applied

to

the

present

unit,

a

capstan

motor

is

used

to

move

the

head

vertically

by

its

turning

effect.

The

unit

consists

of

a

capstan

motor,

a

reel

motor

and

a

solenoid.

The

operation

is

categorized

into

FWD

PLAY,

REV-PLAY,

FWD-SEARCH,

REV-SEARCH

and

STOP

which

are

to

be

selected

cyclically

by

the

rotation

of

the

intermittent

gear.

To

switch

operation

to

respective

modes,

turn

on

and

off

the

rotation

control

of

the

capstan

motor

and

the

solenoid.

Under

such

a

mechanism,

the

head

is

kept

at

PLAY

position

by

means

of

continuous

suction

of

the

said

solenoid,

and

therefore,

then

turned

off

the

current

to

the

solenoid,

the

head

will

be

set

back

to

STOP

position

by

the

turning

effect

of

the

capstan.

Consequently,

the

initialization

for

the

mechanism

while

the

current

is

alive,

can

be

set

back

to

STOP

by

just

turning

the

capstan

motor

for

certain

time

without

sucking

solenoid

whichever

the

procedure

might

be.

As

for

the

FF/REV

operation,

the

reel

motor

will

be

rotated

at

high

speed

at

STOP

position.

2)

T1

MECHANISM

Mechanical

construction

is

the

same

for

both

T1

and

T2,

while

the

controlling

circuit

situated

at

the

top

of

the

mechanism

differs

from

each

other.

Care

shall

be

taken

furthermore,

because

of

the

difference

in

some

part

of

the

signal

logic.

Particularly,

T1

mechanism

shows

considerable

difference

from

the

other

one

in

the

function

which

detects

the

stoppage

of

the

reel

support

and

then

outputs

tape-end

information.

This

works

by

the

detection

on

the

brash

nose

caused

by

the

rotating

motor;

the

said

tape-end

information

will

be

output

1.5

sec.

after

stopped

the

noise

in

spite

of

the

voltage

applied

to

the

reel

motor.

3)

ALC.

CONTROL

(HD614089SC47

14,

15)

|

Connecting

position

for

the

input

selector

of

the

amplifier,

the

recordin

g

gain

in

accordance

with

the

source,

will

be

controlled

by

this

function

and,

if

switched-over

the

amplifier

selector

when

the

deck

starts

recordin

g

or

while

recording,

“selector

connecting

in

information”

is

to

be

sent

from

the

said

amplifier

and

to

be

decoded

in

order

to

output

the

control

signal

to

respective

terminals

for

ALC,

AUX,

ALC

and

CD.

However,

such

a

signal

will

not

be

accepted,

though

input

these

signals,

if

not

set

REC.

MUTE

to

prevent

the

noise

generated

by

change-over

from

being

recorded

(AUTO

SPACE,

REC/PAUSE).

Receiving

Code

ALC.CD

ALC.AUX

oe

ae

4)

FT

MODE

(TEST

MODE)

1.

Test

Mode

will

be

alive

when

inserted

power-source

plug

with

NCAR-4084-adopted

FT

Terminal

connected

to

GND.

2.

To

check

Fade-out

operation

under

Test

Mode.

Input

the

voltage

of

2

—

3V

at

1

kHz

to

LINE

IN.

Connect

oscilloscope

to

LINE

OUT.

os

Press

STOP

key

of

T-2

without

setting

a

cassette

tape.

To

be

judged

as

normal

when

lighting

all

the

LED

and

changing

the

wave

of

the

said

oscilloscope

from

larger

to

smaller.

3.

To

check

REC/PLAYBACK

level

under

Test

Mode

Input

10

kHz

(—20dB)

to

LINE

IN.

Connect

oscilloscope

to

LINE

OUT.

Attach

a

cassette

tape

to

T-2

When

pressed

AUTO

SPACE

key,

recording

will

be

started

automatically

(for

40

sec.

at

most).

When

pressed

AUTO

SPACE

key

repeatedly,

the

tape

will

be

rewound

back

to

the

recording

start

point

and

then

replayed.

Check

the

vibration

of

the

oscilloscope

to

be

identical

both

in

recording

and

replaying.

4.

To

check

High

Speed

under

Test

Mode

When

pressed

the

PLAY

key

in

the

same

direction

as

that

for

replay

while

replaying,

the

tape

speed

will

be

increased

to

high

speed.

And

if

pressed

the

same

key

while

running

at

high

speed,

the

speed

will

be

set

back

to

normal

one.

K-O5W

VV

IC

BLOCK

DIAGRAM

TC4051

(ANALOG

SW)

Voo

(16)

¢

INHIBIT

( 6

)OWLEVEL

Popeye

TO

1

of

A

(1

I)

SICONVE

[1

8

DECODER

B'S

SI-RTER

(with

INHIBIT

Vss

(8)c

Eo

vee

{He

CUE

ee

2P2

ne

ee

CHANNEL

X!1

(i4)e

af?

Sn

eee

IN/OUT

X2

(15)

c

Bt]

Ese

X4

(1)

*

CTT

13)

COMMON

X§

(3)0

=

OUT/IN

X6

(2)

be

ed

X7

(4)

=

PACH)

|

BtIO)

|

ci9)

|

Pw

8)

|

eae

ae

ee

Pe

CE

ee

a

ee

po

Kk

55)

|

x6

(2)

rir

~-

rec

ic

|

ont

ee

a

ee

pH

|

x

TK

TX

NONE

X:

Don’t

Core

r

HA12142NT

(DOLBY

NR)

REC

iN(L)(1)

BQ)

REC

IN(R)

REC

OUT

(L)

(15)

uPC1330HA

(REC/PB

SW)

uPC133HA

Pino,

|

‘Funetion

i

ae

,

¥y

IC

BLOCK

DIAGRAM

-

TB6501P

(MOTOR

DRIVE,

AUTOSTOP)

CXA1198A

(REC

EQ)

Vec

Vref

ROTATION

SENSOR

SPEED

RDIN

GND

ROC

CONTROL

4066BP

(ANALOG

SW)

Dual-Line

Package

IN/OUT

yoo

OUT/IN

CONTAOL

OD

M51131L

(AUTO

LEVEL

CONTROL)

IN/OUT

CONTROL

@

OUT/IN

(4)

-—(6)—-

(8)

<--->

CONTROL

C

OUT/IN

oO

:

©

V3

IN/OUT

gig

\/

———

UAV,

alk

ee

pene

0

a

!

|

LC7800

t

“Burr

|

ad

va

jew

¥oo

L¢o7800

Eas

ae

ti

os

so

z

L

|

M51131L

|

TOP

ViEw

|

PinNo.

|

Function

Signal

output

a

ane

ee

ne

grote

>)

OT

of

or

Sa

ale

TAYoeyry~

n

by

cic

te

ie

ic tr

|

id

a

aie

he

Rime

iii

|_

tt

Ht

@

fe

I)

y,

+

st

:

-

ees

:

Leto.

:

nl

4

aan

enn

cee

BD

J

|

2%

:

iw

,

SE

ERO

re

oy OT

>|

ot

.

AA

‘a

OS

|

aaa

AAA

gaa

ee

whogng

tn

OS

C2

Sa

Se

Sc

So

Yoo

ss

CHASSIS-EXPLODED

VIEW

ee

¥

a

,

1

4

i

.

all

CHASSIS-EXPLODED

VIEW

—

PARTS

LIST

REF.NO.

Al

A2

A3

A4

PARTS

NO.

27110610-1

27110610B

27130644A

27141444A

27141445A

28400282

27180333-1

28400556D

28400554D

27180435

28324404

28324405

27100229A

27190266

27121471

27121472

27121473

27121474

27130645

27300750

27190657

27141339

833426080

834430088

833430080

830440089

831130088

260217

870065

28184498-

|

28184498

838430088

27175253-1LY

28400620-1A

28400617-1

28400619A

28191578-1

28194344-1

28198752-1

28140860

28400702

28400705

28400619A

28191578

28194344

28198752-1

28140860

DESCRIPTION

FRONT

BRACKET

AS

(S)

FRONT

BRACKET

AS

(B)

BRACKET

(F)

BRACKET

(T1)

BRACKET

(T2)

DAMPER

SPRING

(T2)

FRAME

AS

(CASSETTE)

T2

FRAME

(CASSETTE)

T2

SPRING

KNOB

AS

(OP)

(S)

KNOB

AS

(OP)

(B)

CHASSIS

HOLDER

BACK

PANEL

(D)

BACK

PANEL

(P)

BACK

PANEL

(W)

BACK

PANEL

(Q)

BRACKET

(PC)

BUSHING

(CORD)

HOLDER

BRACKET

(SLD)

TAP-TIGHT

SCREW

2.6TTP+8P

TAP-TIGHT

SCREW

3TTS+8B(BC)

TAP-TIGHT

SCREW

3TTP+8P(BC)

TAP-TIGHT

SCREW

4TTC+8C(BC)

TAP-TIGHT

SCREW

3TTW+8B

BINDER

PT

WASHER

TOP

COVER

(S)

TOP

COVER

(B)

TAP-TIGHT

SCREW

3TTB+8B(BC)

LEG

CASSETTE

LID

AS

(T1)

(S)

CASSETTE

LID

(T1)

(S)

CASSETTE

LID

(S)

CLEAR

PLATE

(S)

COSMETIC

BAR

(S)

FACET

(ST1)

(S)

RUBBER

CUSHION

(S)

CASSETTE

LID

AS

(T1)

(B)

CASSETTE

LID

(T1)

(B)

CASSETTE

LID

(B)

CLEAR

PLATE

(B)

COSMETIC

BAR

(B)

FACET

(ST1)

(B)

RUBBER

CUSHION

(B)

REF.NO.

A502

-a

~b

-C

-d

-€

-f

A502

-b

-C

-d

-€

-f

A801

A802

F901

P90]

P901

A

s901

S902

T901

T9O1

Ul

U2

U3

U4

U5

U6

U7

U8

W901

wo90l

wo0!

ZA

Z2

PARTS

NO.

28400701

28400704

28400619A

28191578-1

28194344-1

28198752-1

28140860

28400703

28400706

28400619A

28191578

28194344

28198752-1

28140860

28324

194-1

28324

195-1

252075

25050290

25050337

25050346

25065340

25065

123

2300695

2300696

2300697

2300698

1N108584-2:

1N108585-2

IN108586-2

1N108587-2

IN108588-2

IN

108589-2

1N108590-2

1N108592-2

1N108592-2A

IN

108592-2B

253118

253149

253168

244155

244156

DESCRIPTION

CASSETTE

LID

AS

(T2)

(S)

CASSETTE

LID

(T2)

(S)

CASSETTE

LID

(S)

CLEAR

PLATE

(S)

COSMETIC

BAR

(S)

FACET

(ST1)

(S)

RUBBER

CUSHION

(S)

CASSETTE

LID

AS

(T2)

(B)

CASSETTE

LID

(T2)

(B)

CASSETTE

LID

(B)

CLEAR

PLATE

(B)

COSMETIC

BAR

(B)

FACET

(ST1)

(B)

RUBBER

CUSHION

(B)

KNOB

(EJECT)

KNOB

(DOL)

FUSE

2.5A-SE-EAK

(P)

AC

OUTLET

NSCT-2P118T

(D)

AC

OUTLET

NSCT-2P164

(P/W)

AC

SOCKET

NSCT-2P173

(Q)

NSS-0001

NSS-1258P

(W)

NPT-1096D

(D)

NPT-1096P

(P)

NPT-1096DG

(W)

NPT-1096Q

(Q)

NAAR-4084-2

NAAF-4085-2

NAAR-4086-2

NADIS-4087-2

NADIS-4088-2

NASW-4089-2

NASW-4090-2

NASW-4092-2

(D)

NASW-4092-2A

(P)

NAS

W-4092-2B

(W/Q)

AC

CORD

AS-SAA

(Q)

AC

CORD

AS-CEE

(P/W)

AC

CORD

(D)

CASSETTE

DECK-A

MECHANISM

CASSETTE

DECK-B

MECHANISM

NOTE:

THE

COMPONENTS

IDENTIFIED

BY

MARK

A

ARE

CRITICAL

FOR

RISK

OF

FIRE

AND

ELECTRIC

SHOCK.

NOTE:

(D)

:

(P)

:

(W):

(S)

(B)

:

Only

120V

model

Only

230V

model

Only

Worldwide

model

:

Silver

model

Black

model

REPLACE

ONLY

WITH

PARTS

NUMBER

SPECIFIED.

K-O5W

ADJUSTMENT

PROCEDURES

PRECAUTIONS

TEST

EQUIPMENT/TOOLS

REQUIRED:

1.

Before

adjustment,

clean

the

following

parts

with

an

Audio

oscillator

alchol

moinstend

swab.

Digital

frequency

counter

*

record/playback

head

*

erase

head

Oscilloscope

*

pinch

roller

*

capstan

‘Miveniistor

AC

voltmeter

.

Do

not

use

magnetized

screwdriver

for

adjustments.

.

:

.

e

J

:

Non-magnetic

screw

driver

;

Test

tapes

3.

asians

record/playback

head

with

a

head

de-

TCC-153.

:

10

KHz,

—15dB

magnetizer.

MTT-111

:

3

kHz,

—

OdB

MTT-150

:

Dolby

level

calibration

400Hz,

tone

200nWb/m

Adjustment

point

Remaks

Connection

ils

Output

.

of

Line

input

Test

tape

dic

star

instrument

Tape

speed

High

speed

Frequency

ee

iad

ay

Semi-fixed

on

|

6000

~

Refer

to

item

saree

hacia

Frequency

|

the

60201z

4-4

of

page

3.

LINE

.

's

ve

counter

mechanism

Normal

speed

|

High

speed

.

ria

PCB.

T1

304545

|

first

ene

T2

3030

+5

a

_

a

\

At

300mV

voltmeter

REC/PAU]

AC

.

Same

level

at

eee

Frequenc

\

TAPEMX-

|

REC

requency

|

L403

85kHz

+

2kHz

C90

counter

AC

voltmeter

Head

azimuth

Maximum

and

Head

.

see

AC

screw

sume

phase

at

|_|

azimu

see

aes

voltmeter

FWD:

left

channels

L

eto

REV:

right

andR

output

terminal

AC

voltmeter

to

terminals

TP-1

and

TP-2

AC

voltmeter

to

LINE

OUT

terminal

TIRII9

(Ch.L)

RI20(Ch.R)

T2R147(Ch.L)

R148(Ch.R)

MTT-150

ALC

balance

Frequency

counter

to

P401

read

loose

coupling

AC

voltmeter

R485

L-405

(Ch.L)

se

to

head

REC

AC

voltmeter

L-406

(Ch.R)

Maximum

eae

side

of

Maximum

R131

R132

—20dB

and

—

R485

(Ch.L)

=

m=

12kHz

-20dB

UD-1

C-90

AC

volimeter

R486

(Ch.R)

Alteuntor

or

AF

OSC

REC

UD-1

C-90

output

AC

R405

(Ch.L)

Same

level

at

AC

voltmeter

Blank

tape

INORG

Ee

cvrsiescans

sadesntucienesa

dent

ienassernaieewunes

UD-1

C-90

FT

csc

ys

geese

eeeteecaic

daavnnoveeiois

eteaeiss

en

enecae

nes

XL-I

C-90

.

MIE

TAL

ch

cocrs

incinerated

antens

MX

C-90

|<.

(0) 010

|

Severe

nenere

ner

apnea

meiner

ea

terne

eran

TT

Ien

oer

30

~

70g/cm

PRIREYV

1OPQUue

coccecscueciletieeieeetian

lancet

exes

couencaede.

80

~

180g/cm

BACK

Tension

ast

iiiine

actadigeaiecesnic

eeeneitesnarseeaa

ates

2~7g/em

_g_

"OOS

We

‘oo

C)

&.

R406

R405

R

R & R L

rm,

:

DECK~-A

DECK~B

REC

LEVEL

:

]

y

PB

LEVEL

PB

LEVEL

NCAF—-4085

NCAR-4084

P401

|

DECK

MECHA

PC

BOARD

L403

Hi

-NOR

SPEED

ADJ

a,

NCAR-4086

AF

OSC

Attenuator

LINE

IN

LINE

VTVM

.

OUT

O°

(IN

PHASE)

45° 90°

180

fig-2

,

Confirming

phase

relationship

fig-

1

wank,

TAPE

MECHNISM

PARTS

LIST

(DECK-A,B)

REF.NO.

2

2-1

2-2

2-3

2-4

2-7

2-8

2-11

3-5

3-9

3-11

5-13

5-17

5-25

9-25

10

12

14

15

16

17

18

20

23

25

26

29

30

31

32

36

37

39

40

43

51

52

53

61

62

63

64

65

66

67

69

70

84

PARTS

NO.

24611494

24602482

24601245

24611498

24602483

24602484

24609032

24611177

24611175

24600087

24611428

24611493

24605711

833120059

24601252

24606457

24606458

24606343

24606271

22240239

22240480

24607041B

24605739

24611384A

24611385

24607116

24602485A

24603365A

24603366

24603367

24602486

24611041

24610841

24605714

24605716

24602487

24602528

24602414C

24602421C

24609001

24609006A

8930151

838130080

24611488

24606333

24606332A

24606331

24611496

24611497

833126049

24611188A

24610844

24611495

24607099

82112004

838126080

24611323

24606470

24606471

DESCRIPTION

MECHANISM

CHASSIS

AS

IDLER

AS

REEL

MOTOR

BASE

AS

(CHASSIS)

BASE

AS

(REEL)

(DECK-B)

BASE

AS

(REEL)

(DECK-A)

PAN

HEAD

SCREW

2.6x6.4ZN

PLASTIC

WASHER

1.7x3.2x.25

PLASTIC

WASHER

2.1x7x.25

P

HEAD

AS

(DECK-A)

R/P

HEAD

AS

(DECK-B)

BASE

(HEAD)

SPRING

TAPPING

SCREW

2x5ZN

MAIN

MOTOR

AS

P.C.B.

AS

(CONTROL)

(DECK-A)

P.C.B.

AS

(CONTROL)

(DECK-B)

PHOTO

REFLECTOR

PUSH

SWITCH

TA7291S

(DECK-B)

TB6501P

(DECK-A)

ARM

(PROTECT)

L

SPRING

SLIDE

PLATE

LEAD

HOLDER

ARM

(PLAY)

CAM

GEAR

(3R)

LEVER

(REC)

LEVER

(PACK)

L

LEVER

(METAL)

L

MAIN

BELT

PLASTIC

WASHER

2.6x0.25

PLASTIC

WASHER

2.6x4.7x.5

SPRING

FLYWHEEL

AS

FLYWHEEL

AS

PINCH

ROLLER

AS

(R)

PINCH

ROLLER

AS

PAN

HEAD

SCREW

SW2.6x5ZN

SCREW

FE

WASHER

1.5S

WAVE

SCREW

3x8

-

CUSHION

(HOLDER)

SOLENOID

COIL

AS

CORE

PLANGER

PLATE

AS

(HOLDER)

(DECK-B)

HOLDER

BRACKET

(R)

(DECK-A)

TAP-TIGHT

SCREW

2.6TTP+4C

WASHER

(OIL

SEAL)

WASHER

1.9X5X0.25

PLATE

AS

(HOLDER)

EJECT

ARM

(A)

PAN-HEAD

SCREW

2P+4F

SCREW

2.6x8

LUG

WIRE

CONNECTOR

(P.B.)

(DECK-

A)

WIRE

CONNECTOR

(R/P)

(DECK-

B)

10=

Onkyo K-05W User manual

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