Pioneer CTX-5 Service manual

()

STEREO CASSETTE TAPE DECK

GT-X5

r:loNeerl"

ORDER NO. ARP-218-O

MODEL

r

This the additional

o

Ce

o

Este manual

CT-XS COMES IN

Type HE HB

D

22OV

22Ov and

12OV,22OV

service manual is

manuel

d'instruction

de

and 24Ov

service

servicio trata del mdtodo

CONTENTS

r.

sPEcrFrcATtoNS

FRONT

2.

3. D|SASSE|\,BLY PARTS

4.

5. BLOCK DIAGRAM

6. CIRCUIT

7.

EXPLODED VIEWS PACKING

8.

PANEL FACILITIES

LOCATION

DESCRIPTIONS.

... .......

. . . . . . .

......

. . . . . .

THREE VERSIONS

Voltag,

(Switchable)

24OV

{Switchable}

and 24OV

applicable to

manual

se refdre

. . .

.

(Swatchable)

HE

the

and HB types. For

{ARP.236-0}.

au mode de r6glage,

de

aiuste escrito en espafrol.

17

DISTINGUTSHED

Europe

model

United Kingdom model

General export

servicing

en frangais.

2

5

I

P.C.

9.

10. 1 1. ELECTRICAL

12. ADJUSTMENT

BOARDS

SCHEMATIC

REGLAGE AJUSTE.

AS FOLLOWS:

Remark

model

of the D type,

CONNECTION

DIAGRAM

PARTS

LIST

.....

please

DIAGRAM

refer

to

30 33 40

PIGINEEFI PIC,NEEFI PIC'NEEFI PfONEEFf

ELECTFICINIC ELECTFIONICA ELECYFICINIC ELECTFIG|NIC3

CCIFIPG,FIATION a r, Mesu.o 1

lNC. 1925 E.

IUBAI

[EUFICIPEI

AUAYFALIA PTY.

N.v. Keetbe.glaan

Oominguez Sr., Lons Beach.

LTEI. 17a 1a4 Bounda.y Fload,

T, 2740 Beve.en.

chome. Mesu.o-ku. rokyo1s3,

Catironnia

Bets,um

gOE.1O

E.6es de. V

Ll.S.A.

cto.,a 31s5, Ausr.aha

YH O \OV.

Japa.

1982

Printed

ldDdn

1.

SPECIFICATIONS

Systems

Heads ........

Motor ...........

Wow and Flutter Fast

winding Time ... Approximately

Frequency Response

-20 Normal

Chrometape .......40to15,000H2+3dB

Metal tape

Signal-to-Noise Ratio

Dolby NR

Noise Reduction

Dolby NR

Harmonic

Input (Sensitivity/Maximum

LINE

Output

LINE

"Hard Permalloy"

dB recording:

tape

OFF

ON

Distortion

(INPUT)

(Reference

(OUTPUT)

Compact cassette,2-channel

recording/playback

"Ferrite"

................

............. More

Effect

.....................

allowable

level/Load

..................

mor€ than

No

No more than

........

More

No

input/lmpedance)

impedance)

erasing

DC servo

0.05%

1 10 seconds

to

4O

15,000 Hz (30

(30

40 to 15.000

(30

than

10 dB

more than

mV/25

63

head x 1 head

motor

(WRMS)

+

0.17% (C-60

+

to 16,000

to

16,000 Hz)

Hz + 3 dB

to 16,500 Hz)

than

(at

5

1.0olo

V/50 ka

450 mV/50

Subfunctions

r

Dolby NR system

.

position

3

o

Air damp

o

Full

automatic

o

REC muting

o

Music

r . o o o

search

Timer

stand-by function One-touch recording function Operating

(Automatic

A.L.C lC-based

full

(ON/OFF)

tape selector

eject function

stoD

function

mode indicator

logic

(NORM/CrOr/METALI

function

Level Control) recording function control

type

B

(POWER,

REC, PAUSE)

Miscellaneous

Power Requirements .............

Power

Consumotion .... ....... . . .......

Dimensions

Weight

(without

12-5l8

package)

AC 220 V / 24 V(switchable)

50/60 Hz

.320(W) x99.5(Hlx200(D) mm

(W)

x

3-15/16

.

3.6 kg

(H)

30 watts

x 7-7l8

(7

lb 15 oz)

Supplied Parts

Operating Connection cord with

NOTES: Specifications and the design subject to modifications without notice

NOTES:

1. Reference Tapes:

2.

3.

instructions

Normal 6

DIN 455'13/BLATTT

CrOr Reference Recording (160

nwb/m magnetic levell Reference Signal: 333

pin plug

LH: DIN 44513/BLATT6

...........................

... ........ .... ..

to improvements.

due

-7

dBv

or equiv.

level at line out

(CrO2)

Level: level : Philips cassette

Hz

possible

reference

stereo

x 1 x 1

(DlN) tape)

dB

3

Hz)

57dB

kHz)

(0

dB)

ka

(Dl

in

1

2

4.

Wow

I Flutter:

(weighted)

tion acoustic 45507

E

Frequency DOLBY dication. Signal to Noise distortion

7.

Sensitivity: recording

maximum.

Maximum

8.

of input input

lacks,

point

the becomes clipped. Reference playback.

This model

10

o

When the Depress the power r

.

€)

Depress this button to the Do not

O)

This counter digit meter.

O)

Depress this

o

REC:

POWER: This lights PAUSE:

G)

This selector

be selected during recording

during

NORMAL: For normal tapes CrOr: For METAL:

(DlN-type).

nector

PowER

this

switch is

OPERATION MODE indicator

to the

muting

The has been

about 4 When the POWER while the tape released

EJECT

cassette holder,

press

TAPE

COUNTER RESET

oPERATTNG

TAPE

playback

o

JIS rms

compensation

Response:

NR

OFF, level deviation

Ratio:

level,

3o/o

level

Allowable

(REC)

where recording

Output Level:

does not

weighted

Input level

with input

level

this

is the maximum

employ a recording/playback

SWTTCH

depressed, the

switch again to release

deck.

circuit is

to

set

seconds. This is not

and

BUTTON

this

COUNTER

shows the

button to reset the tape

This

This Dressed,

SELECTOR

allows

chrome

For metal tapes

and there

ON

switch is

deck is operating, the

the

stop mode is

open the

push

button when the taoe

position

MODE

lights

when the when the

lights

when the

the

bias

in line

with the type

tapes

kHz, with

[3

valuel;

(weighted)

o

Measured

o

Measured

(mV)

Input:

controls

-7

actuated

the

acoustic

DIN

is

at

(DlN

455.|3/BLATTT).

required

(REC)

level

While

and increasing

input level

amplif ier

dBv level

power

(POWER-l it when turning

after

will be no operation

failure or malfunction.

to the

set

established.

cassette holder. To

top back

of the tape

compensa-

Hz.

t3,150

PEAK value

at - 20 +6

the

decreasing

the

until it locks.

dB level,

dB

without in-

third harmonic

for

reference

controls

output

waveform

line

at

out during

is turned on

POWER

OFF

deck's operation is

is in motion.

using a three-

(mVl

BUTTON

counter

display to

TNDTCATORS

(o)

REC

switch

POWER

PAUSE

switch

pressed.

is

pressed.

is

switch ( I I ) is

SWTTCHES

and equalizer characteristics to

and equalizer characteristics

of tape

you

are using.

with

DIN

set to

settings level

at at

con-

and

lights.

the

off

sivitch

for

position

close

000.

2.FRONT

(0

ProNc@

PANEL

FACILITIES

TTMER

o

This

switch employed operations. timer

is not REC:

OFF: PLAY:

MUS|C

o)

this

Use on it to

a non-recorded fast-forward to

ON, ween playback program.

REC

o

Depress this not

work when

prevention When this OPERATION MODE

START

is

for

unattened

Keep this

being Set automatically time recording

stance. For Set to automatically preset playback. used to

alarm

switch

quickly

mode

tape

travel

songs

and the

mode.

SWTTCH

switch to

tabs of a loaded

switch is

SWTTCH

used

when

an optional

recording

switch

used.

to preset

when

this

of

this

on the

The tape

wake-up

clock.

position

to the

on the

programs

the

position to

the

audio timer

SEARCH

playing

when

locate

the

section of over

This is

a cassette is not loaded

beginning

or rewind

will

stop

unit is

a handy

start tape recording.

cassette have

depressed to the

indicator

or

the

at

OFF

to

recording

audio timer

timer

is not

to

playback

in the

morning

SWTTCH

tape

a

of songs separated

4 seconds

mode.

when this

in

the non-recorded

automatically

function for locating

(REC o)

audio

timer

tape

mode

and to

being

taoe

mode

at the

function

instead

duration.

switch is set

set to the

This switch

the erasure

been

broken off.

position,

playback

when the

deck

at the

start

for in_

used.

deck

time

start the

can oe

of

recorded

ln the

area bet-

wake-up_

position

set the

unattended,

set the

and to

with music

or when

ON

will be iiluminated.

the

an

by

the

will

the

REC

o

is

Depressing to the switch is

between to listen are required

.

(D

Depress this

Dolby which have tion

For other tapes,

*The

Laboratories

Noise Reduction

Dolby Laboratories

@

REW

FF

STOP

PLAY

MUTE

create

No signal is recording.

this

an unrecorded

time

during which

used for

programs

to

and for

for

*DOLBY

Noise Reduction

been recorded

system.

word

"Dolby"

oPERATING

(<<l:

(>>l:

(tl:

(>l:

SWTTCH

switch during recording

blank

the switch

providing

and

editing tapes

creating the

operating the

recorded

Do not touch

switch to

Licensing

when the

NR

SWTTCH

ON for recording

system

press

not

do

and

Corporation.

System

Licensing

the

on

blanks

unrecorded

MUSIC

the

switch unless

and for

using the Dolby

this

are trademarks

00

manufactured

Corporation.

SWTTCHES

Depress this high

to

left).

Depress ward from left to Depress this

to release

and Depress this

speed

this high

at

switch to

(The

tape

switch

speed

rightl.

switch to

the operating

switch

makes it

cassette

is kept

of the required

so that they

SEARCH facility.

switch is touched

playback

switch.

under license

rewind the tape

will

to

send

(The

stop

to

start

possible

tape

only for

depressed.

are

blanks

necessarv.

the

with

of tapes

Noise Reduc-

of Dolby

rravel

from right

the

taoe

tape

will

the

tape travel

switches.

playback.

tape

This

length

easier

which

during

built-in

from

at

for-

travel

PAUSE

@

Depress this ing recording

the tape to

allow depressed dicator

.

The oo€rations even when the PAUSE

SWTTCH

switch

or

to the

(PAUSE

tape

does

to

stop

playback.

continue to travel. When this

position,

ON I I ) will be illuminat€d.

not

stop during fast forward or rewind

the tape travel

Depress this

the

OPERATION MODE

switch

temporarily durswitch again

is deoressed.

to

switch

in-

is

3. DISASSEMBLY

.

Tape

transport

Remove

the

four

unit

screws

(E).

.

Door

assembly

1.

Depress

open

2. Remove

3. Pull

the cassette

up

the EJECT

the hooks

the door

button

holdel.

(C).

assemblv

and

.

Front Remove

panel

the

six screws

assembly

(D).

.

Bottom Remove two

plate

the

screws

(B).

4. PARTS

LOCATION

NO?ES: c

Parts utithout

o

The I marh safety designation.

o

For

**

and

** GENERALLY MOT'"ES

This classification shall

number, temperature, humidity,

factor

your

Parts

*.

part

number

on some component

found

part.

of the

Stoch Control,

be adjusted by

cannot be supplied.

Therefore, when

the

FASTER

mouing items are indicated with

fast

THAN *. each

etc.

parts

replacing,

indicates

be sure to use

distributor because

the importance of the

parts

of identical

the marhs

depends

it

on model

Front Panel

Front Panel assembly RX8-692

Eject knob RAC-281

Bonnet ,RNA-592

**

Door assembly

View

| I

I

RX8.693

(POWER)

Knob RAC.280

Standby knob

(TIMER) RAC-294

Front

Tape cou nter

RAW-189

B-^

View with Panel

Removed

(TAPE

B

Knob RAC-286

A

(PLAY,

*

LED 8G5524S

(PAUSE,

Knob RAC-285

Knob RAC-276

l

'@l

Knob F.AC-282

SELECTOR)

REC MUTE)

Knob B RAC-277

REW,

FF,

(DOLBY

A

Standby

(MUSIC RAC-234

ILED4O2,

(REC)

STOP)

NRI

knob

SEARCH)

POWER)

LED

PR5524S

Cassette RAH.433

*

Erase head RP8-096

(

P8-085)

R

**

REC/PB head RPB.O89

**

Pinch RX

t*

Slide switch RSH-064

(LED4O1,

plate

arm assembly

B-720

{S4O9.

REC}

TIMER)

**

*

LED BG55245

Push RSG-143

**

Push

(s302-s304)

RSG-145

**

(LED4O3.

switch

Control assembly RWG-137

Push

RSG-144

Slide

RSH-066

PAUSE)

(S4O1-54071

switch

assembly

switch

(5305)

(5408)

5

Top

View

/\**

r\

1\**

*

A

*'t

A

f'1

i\

**

tt

*

**

Transistor

265

25D1

Transistor

25D1 265

(FU1,

Fuse REK-O64

Po*ur

transformer

12201240V], RTT-293

Motor

assembly

RXM.O76

Plrng"t

solenoid RXP-127 (R

XP-131

Plunger

solenoid

RXP.126

(RXP-130)

eusn

switch

RSA-060

(o701)

(o801

T8O0mA)

)

(S301)

)

(

Variable resistor RCV-106

NPUT}

I

Main assembly RWX.631

Side

assembly

RWX-643

-

R

**

F

t

Push RSG-144

t*

Push

(s302-s304)

RSG.145

switch assembly

switch

(5305)

-

Rear Panel

**

Line voltage

[

RSX-045

*

Variable RCV-106

Terminal 4-P R KB.O2O

resistor

View

selector

(lNPUT}

(l

NPUT/OUTPUT)

"d#lY1-:-""-_*

AC

f

RDG-O36 RDG-049

power

Strain REC-396

cord

(for

HE type)

(for

HB

relief

-

type)

-

6

E1

5. BLOCK DIAGRAM

2

3

B

LINE OUTPUT MUTE

*-LadB-

o5os

I

P.-.

HREc>

GATE

REC/PB

SWICHES

FLAT

AMPLIFIER

.-

-,.*l

[

I +--rt_jr +.

I i:+r

i...

i'--q I I

h

l::r'f

.-|.

tm

DOLBY

RECOROING

?Y]

NOIS

AMP.

D

-l'

1

RECORDING

gIAS

OSCILLATOR

2

TAPE SELECTOR

SWITCHES

3

:

NORM

:

CrOz

METALT

I

42l.7mV

489.8mv 69t.8mV

4

TION tc 301

CIRCUIT

CONTROL CIRCUIT

AL IN

MUTE

BIAS OSC, PAJSE

PATJSE

65

PLAY

-o FF

{H

REw

-o5

sToP

-on

PAUSE .H

o--1

I

m

I I

I

m

-

RECORDING

AMP.

LINE

MUTE

POWER IND,

POWER

FF SOL.

REW SOL.

PrN

MS

ENO PULSE

SUPPLY

cH soL .

SOL.

CIRCUIT

MS

IlXrtSr,

-

aT

REC MUTE

-

4

5

6

CIRCUIT

6.

DESCRIPTIONS

6.1 OUTLINE

OF

Playback Equalizer

The EQ

amplifier, playback For and is turned output

Dolby Noise

The

reduction

by up

Dolby

Recording

The recording and has a high emitter,

leakage response cuit

sponses ferent

Further,

output

Bias Oscillator

This erase head head

amplifier employs

ild

the NFB

equalization

playback

metal

circuit

CT-X5 features to

IC

and

of

can

by the

types

circuits

push-pull

with

equalization

(METAL)

on

to incorporate

of the EQ

Reduction

system

10dB

(HA1L226).

Amplifier

frequency peaking

a trap in

the recording

of

the high frequency

be

changed

TAPE

of tape

during

with the erase

the recording

(where above

amplifier

of this

oscillator

MAIN

STAGE

Circuit

circuit is

with normal tapes, the

amplifier.

System

the B-type

the

SkHz)

uses a single

the output

bias

give

to

SELECT

(NORM,

playback,

amplifier

current,

bias

2-stage direct-coupled

designed for

(NORM)

with

chrome

transistor

the

RC

network

Dolby

ratio

S/N

incorporated

circuit in

circuit to

signal.

The

equalization

three different

switches

CrO,

and METAL).

both

the input a^re

circuit

supplies the

and the

current.

tapes.

(CrO2

switch

in

the

noise

is improved

in

transistor

the

prevent

peaking

cir-

re-

for

dif-

and

grounded.

recording

The dif-

ferent of tape by which in

recording

(NORM

changing

turn

bias

CrO2

,

the

oscillator

varies

levels

and

the

oscillating

for

the METAL) power

power.

different

are

switched

supply

types

voltage

)

6.2 CONTROL CIRCUIT The

control chip IC operations. this IC and

a

counter frequency timing

also includes

timer start functions.

settings for

operational

nated.

Fig.

and

The 6-1, the output

modes in between

circuits,

Operations

The

mechanical following chapter

(see page

circuit in

(PM9002B)

In

which

addition

music

divider

the mechanism

timing

discrepancies

PM9002B pin

the functional

time

Figs.

6-3 and see the block

during Each Mode

operations effected by the

circuit changes

14).

this deck utilizes

enables

mechanism

to

search

And due

system

feather-touch

(MS),

to the digital

employed in

control,

have been

layout

block diagram

charts

6-4.

is

in Fig.

during different

For

interrelations

diagram on

are described in

one-

a

control,

auto-stop,

all

elimi-

shown in

6-2,

page

7.

vcc

pltrse

a-E-

REC

PLAY

srop

n-e

w

M5

TIM

ING

SENSE T IM

ING

NO ISE

FIL

SIGNAL

IN

GND

L

Fig.6-1 PM9002B

layout

''"t'

J

"..

OFF O

erav

f

l,

ENO

PULSE

NOISE FILTER

x

itwsi6F FrIV

TEC

FAUSE

AR

Fig.6-2 PM9002B

internal

TimanO clck OSC

&

divrdcr

block

diagram

Normal ooeration

I'UTE

LINE (

27)

REC MUT€ (

28)

PINCH

SOL

(

24)

FF

SOL.

(

2O)

R€W

SOL.

(

25)

MS

SOL.

(

23 1

PLAY STOP FF

STOP

REW

STOP

REC,/PAUSE

PAUSE

STOP

REC

PAUSE PAUSE PLAY

STOP

PAUSE

Normal operation

MUT€

LINE

(

Pin 271

REC

MUTE

(

Pin 28)

OSC

ErAS

(

Pin 22)

PI NCH

SOL.

Pin 29)

{

F F

SOL.

(

Pin 26)

REW

SOL.

(

25

I

MS

SOL.

Pin 23}

{

MSSW:ON

Fig.6-3

STOP

PM9002B time chart

R€W FF STOP

PLAY

(When

STOP

MS

REC

switch

STOP

is

OFF)

Dir&t

change

REC FF

REC PAUSE

PAUSE

'1

0

2l

)

(When

Fig.

PM9002B time chart

6-4

MS

switch

is ON)

1. When

applied period

0V IC's IC four

the POWER

Then

the

to

when

to 5V

internal

into

stop

seconds. During effected control

buttons.

Switch is

POWER

(Vcc)

1

1 voltage

switch is

(approximately

reset

circuit

status which

this

pressing

by

any of

PINCH

PLAY SOL.,

-'l--------{1

LINE

MUTE

Llct6msl-

(oPEN)

RTE

(GNO)

REC

Switched switched

of IC401.

is being from is

activated, is maintained time, Do

the

During

increased

0.6V to

change

other

ON

*

on,

the initial

2.4V)

putting

for

about

can be

operation

bV is

from

the the

Play

2.

lVlode

When pin and level.

(PIEY)

5

the level

Q503

activated.

MUTE) is to

is

pressed,

enable

PLAY

the

is

In

opened

thereby

play

button

of IC401

of

turned addition,

416ms

releasing

mode

pressed,

is

switched

(PINCH

24

on

and

the

IC401

after

the

the line

operations

the level

,,L,,

to

SOL)

pinch

27

PLAy

mute

to

commence.

ALTNE

g/OUTPUT

level,

..H"

to

roller

(LINE

button

status

of

3. Recording When

tabs

IC4OL

the deck

When

tnEel

a cassette

intact

is

switched

to be

the

is

changed

is

REC button

also changed As

a result,

reed

relay (RY501)

fi-0-

CASSETTE

WITH

IS

REC/P

HEAD

E.P TABS

LOADEO

B.

HAtf

Mode

half

loaded

to

switched

to

"L"

the

REC

Fn

ie;ri5

r-152m#

I

r44,t6 I

REC

I

r-rrue uure

I

)-lqe.n,t!,

nEi

t

| ^-^

L------r

('H'

with

in

the deck,

('H"

to recording

is

to

"L"

while

indicator

is

prNcH

SOL.

z

bsc.

-

--

rnsf

MUTE

-

REC

TO

OPEN

LEVEL)

its erasure

level,

thereby

pressed,

PitjlO

level.

l-g

lights

switched

Fig.

6-5 PLAY

prevention

B

(AR)

enabling

mode.

IC401 pin

(REC)

up

off,

is and

therebyT

PINCH

of

open.

the

SOL.

is

mode

operation

switching

7

And '6H"

(BIAS

pressed,

4

is Pin are

opened thereby status

the

level,

OSC)

(LINE

27

releasing

to

PUSH

HEAO

AAIO PINCH

ROLLER

the

IC401

tape

is

thereby 416ms

permit

UP

BASE

path 24

signal

transport

opened

activating

MUTE)

after

the

line

recording

B|AS

to

(PINCH

52ms

and

the

mute

to

OSC.

the

recording SOL)

is

commenced.

after

the

bias

REC

(REC

28 button

and recording

start.

circuit.

changed

REC

button

oscillator.

MUTE)

pressed,

is

mute

.\LINE

g/UJTPUT

to

22

+12v

LINE

A)

INPUT

Fig.

'H'ACTVE

6-6 REC

mode

H'ACTIVE

operation

Fast

4.

(TD 26 later.

Forward Mode

When the FF

is

changed

(FF

SOL) being changed

Q50L

is thus

button

to

"L"

turned

is

solenoid to start fast forward

O5Ol: OFF(z146ms)-ON

REC MUTE

pressed

IC401

level, followed

to

"H" level 416ms

on,

activating the

operation.

by

FF

lights up. And

IC

8

this muted. pressed, are

REC and

is changed to

If the REC and

IC401

changed to

PAUSE

signal circuit

Furthermore, of the signal to

has

been changed to

since

"L"

being

LINE OUTPUT, but

('H"

PAUSE

20

tnEel

level, resulting in

indicators lighting up,

switched to

27 ts opened,

66H"

(LINE

27

level,

the signal circuit

buttons are

and

Zf

recording circuit.

permitting

since

level, recording

MUTE)

both

IFAUSE-) both

and

output pin

mute

of

is

the the

28

mode is maintained.

LINE MUTE

Fig.

5. Rewind Mode When

(RE-W)

7 25 later. solenoid to

the REW button is

is

changed to

(REW

SOL) being changed

is

Q502

thus

steut

+lx

;

REW

BUTTON

Fig.

Pause

6.

pressing not released

play/pause cording/pause the PLAY switches the the the deck If pin both PAUSE PAUSE changed to

The

REC

PAUSE

the

(FAttSE)

2

changed

Mode

pause

the

mode

PAUSE

by

mode,

mode.

button

deck

button

to recording/pause

button is

to

indicator. When

buttons

'(L"

FF mode

6-7

operation

pressed,

level,

"L"

to

turned on,

rewind

REW mode

6-8

in

button.

pressing

or

operation.

0502:OFF(4{6ms}

the

activating the REW

operation

this deck

The

PLAY

the

REC button

Note, however,

during recording/pause

play/pause

to

during

play/pause

mode,

mode.

and

"L"

level,

pressed 21

during (PAUSE) thereby lighting up both

pressed,

are

level,

and the

IC401

PAUSE

IC401

followed

level

"H"

-ON

is released

pause

mode is

button

during

pressing

that

pressing

and

mode

switches

stop mode,

of IC401

PLAY

the

indicator

pin pin

by 416ms

by

during

re-

mode

are

the

and

2L is

pause BUrroN

Fis. 6-9 PAUSE

.

PLAY-PLAY MUSE

+,;

f.frqp"t-

Fig.6-10

.

STOP-REC PAUSE

r--r

lC4O4

E0Y?5*or

REc

+

BUTTON

Fig.

6-11

q

$lX

x

tc4o4

PLAY PAUSE

REC

mode

PAUSE

operation

mode

operation

12

7.

MS

Operation

When the blank

the

MS

button ON,

portion

recommenced

pressed

is (PINCH The head base is

changed to

pressed,

is

MS

the pletion

base solenoid is pressed, During is applied if

this responding tunes)

with

SOL) is changed to

pinch

solenoid

starts

resulting in

solenoid being

of the

is

thus moved

activated 416ms

resulting

this

action,

to

signal is interrupted for

to

IC401 matically. The when FF

the REW button

button.

FF

or REW button

is

tape transport is

of tape between

play

in

the

mode. When

MS

button ON, IC401

is thereby

to

((H"

level

23

260ms after the FF

rise.

Q504

activated.

"power

assist" operation,

to the

tunes, and then

the

Ievel for

"H"

activated and the

(MS

SOL)

being

Following

position.

MS

after the

in fast forward

playback

IN)

fast forward

a

(SIGNAL

L3

about 84ms

portion

a

switches to

of blank

playback

above operation is much

pressed

is

pressed

stopped

FF

with

at the

button

24

312ms.

of

IC401

button

turned on and

comhead

the

The FF

FF

button is

tape travel.

signal

IC401,

of

and

(cor-

tape between

mode auto-

the

same

instead of the

8. Auto-stop Mode photo-interrupter

A

16

(END

PULSE)

resulting in the

(C408)

ly. The

being charged up

potential threshold voltage, auto-stop When turning, applied to

pacitor

mechanism.

tape travel

photo-interrupter

the

16, and the

connected increase until it The IC

is thus

switched to stop mode, thereby

capacitor connected at

stops and the take-up reel

output is applied

of IC401

17

prevents

and

to

exceeds

stopping tape mechanisms.

Fig.

6-13 Tape travel detection

to

during

tape transport,

to

L7

and discharged repeated-

is

kept

thus

activation

below the

of

the

stops

output is no

potential

(C408)

17

longer

on the

continues

ca-

to

the threshold voltage.

'-leiemsf ; FF

SOL.

L-------I

otN

:MS ; soL.

Q)1+zeo'*-

FFi

I

'

L|NE

i.____-l'!u_r_q

-- -{ iot.l

(32ms)

Fig.

6-12 MS

IOFF(416ms){fil

operation

MUSIC

(CUE)

SEARCH

obl}$,,

9. Timer Timer

are pin

Start

recording,

attained

(TIMER)

18

respectively.

When

intact

ON

REC four erasure ever, If

TIMER playback

after no is

a cassette

is

with

position,

seconds

the

timer

left

in

REC

orr

er-av

loaded,

the TIMER

prevention

tape

POWER

switch

mode power start

the

t\,tc

o

t

flr

TIMER

(s409)

Operation

by

changing

tape

and the recording

after

deck

switch

in

is

line

operations

position.

OFF

.

TIMER

REC

playback

timer

the

to * Vcc,

with

erasure

POWER

switch

mode

power

the

tabs have

remains

in

is

switched

the TIMER

started

voltage

when

and

off potential ground,

of IC401

and

prevention

switch

(S409)

comes

been

is

in

the TIMER

is

started

on. If

removed,

stop mode.

ON

PLAY position,

about

four

is established.

the TIMER

TIMER

STANOBY

modes

open

tabs

switched

about

the

how-

with

the

seconds

There

switch

is

CASSETTE HALF

WITH

TABS

E.P

IS

LOADED

Fig.

6-14 Timer

6.3 MECHANICAL Playback

The when (Both mounted

o

Stop Mode

The mode presses

lever gear gear.

lever (D) keeping belt-driven

counterclockwise

Mode

CT-X5

shifting

the

on

head

is

shown

down

spring

(D),

clockwise Solenoid (F)

is

by

the cam

makes

the head

recording/playback

the head

(see

Fig.6-151

base

in Fig.

towards

(B).

With

P

is

kept

against

gear

cam

gear

(D)

by

the

together

start

operation

OPERATIONS

use

of

the

base

during

and erase

base).

shift

mechanism

6-15.

Operating

(C)

cam

(C)

cam

torque

inactive,

combined

is

applied to

and

stopper

return

spring

stationary.

capstan

motor,

with

capstan

playback

during

due

to

the hook

(G)

of

(E),

The

flywheel

and

the

capstan gear.

torque

mode.

heads

are

stop

lever (A)

operating

with

cam

this

cam gear

of

gear

cam

thereby

is

rotates

Gear

lever

return Cam

Fig.

(F)

(A

leveiS[ring

6-15

Gear lever

Operating

lever

Solenor=E"liOperating

(E)

spring

gear

(D)

Flywheel

Capstan

ilffi

(Bl

Hebd

STOP operation

gear

base

drive

14

Fig.6-16)

Solenoid

gear

lever

Playback

Switch to (see

1.

2. Operating (C)

by operating lever

gear

(D)

rotates

(H)

o

Mode from

P

is

activated

(F)

is released from

(A)

lever

@

Mode

Stop

ffid the

O ,

stopper

pressed

is

down onto

spring

and engages

(B)

O ,

capstan

hook

(G)

of

O

cam carn gear

.

(B)

Solenoid

Fig.6-16

Switch to (see

Fig.6-17)

Cam

3. capstan operating

4. After lift,

(H)

P

Playback

gear

lever

cam

@

'"'

-+

STOP

Mode

from

(H)

continues

(H)

@

(A)

up

(C) pasises

gear

(D)

lE

PLAY

operation

Stop Mode

rotating

ffid

, the

disengages

cam

O

point

1

due

(C) pushes

of maximum capstan

gear

to

-+

STOP

forces the

spring is

pinch

PLAY

Fig.

HB

also

roller

6-18,

(A)

o

Operation

As

drive

back

mode. through pinch time,

forcing

Fig.

6-18

Different Parts

of

can be

seen in

of

operating lever

This

the

action of

compressor

the with the capstan. Furthermore, lifted applied to idler reel base capstan

to release

the idler

transmitting

(the

drive

motor).

gear

Drive

the reel brake. Pressure

arm, resulting

gear

drive

(see

gear

Fig.

being

6-19).

TU

idler

rotation

operation

rises

the

3

head

during

play-

the head base

drive

spring. The

lifted

at

the same

into close

the brake

contact

plate

is also

in the TU

to the TU

belt-driven by

reel base

TU

base

up

is

the

Fig.6-17

o

Switch (see

to

Fig.6-18)

5.

Operating lever lever thereby tending motion (G)

catches cam lever

mode).

-

Playback

(A)

to

of cam

the

gear

(D)

(A)

becomes

(D)

-+

STOP

Mode from

PLAY

Stop Mode

spring

press

against to continue gear

(D),

arm of

stops rotating

stationary

operation

(B)

forces

cam

the rotationary

but

since stopper

gear

lever

and operating

2

operating

(C)

Q)

(F)

(E

(playback

Fis.6-19

Generation of take-up torque

,

Switch (see

Fig.6-20)

When

1. gear

of (G)

(E)

to

Stop

solenoid

lever

bV the

(D

Mode

P

(F)

action

2. Operating lever

(A)

lever rotation

against cam

of cam

of the head base drive

3. Stopper

(F),

shown

(G)

catches the hook

stopping the mechanism in

Fig.

in

6-15

Playback Mode

from

is deactivated

disconnected from

is

gear

of

spring

gear (D)

(stop

(B)

(C)

mode).

lever retum

forces

(D @

@

the

O ,

stopper

spring

operating

resulting in

,

lowering

and

gear

of

condition

the

arm

lever

Rewind

the drive

gear ing time, the

brake

Operation

When

solenoid R is

arm

on the

arm

is moved

engages

activated

to the left,

the supply reel

in rotation of the supply reel base. At

plate

at the tip of the

up,

thereby releasing

Brake

Solenoid

shoe

R

Brake

drive arm

plate

(see

and the drive

reel brake.

the

Brake

Fig.6-22'1,

gear

result-

the

same

pushes

shoe

the

-

Fig.

6-20

Fast Forward

When

moved

to the right, engages TU

reel base

Operation

solenoid

idler

the

as shown in being belt-driven same time, pushes

the

brake

reel brake.

Brake shoe

gear

Drive

(B)

+

PLAY

F

STOP

is

activated, the drive

and the drive

g€il,

resulting

Fig.

by the

capstan motor). At

on the branch

plate

up,

thereby releasing

plate

Brake

operation

gear

in

rotation of the

(the

6-2L

of

the drive

Solenoid

arm

on the

drive

F

is

arm

gear

the

arm

the

Supply

reel

Brake

Fig.

MS

Operation

MS

operation forward review tion, the and

and rewind

operations.

po\Mer

playback

being

6-18 time, the head During PMS

solenoid. leased, through is.

designed

pinch

followed F

or

solenoid

respectively.

tion

Note:

If MS rewind solenoid after speahing).

this

the

roller

by

a

period,

PMS

stopper

to

power

operation

brief

base

plate

6-22

(Music

involves

At

is

applied

operation

effected

base being

power

Although

solenoid

lever.

maintain

TU

and

also being

resulting

R,

mode has

R

released

is

period

Drive

arm

Rewind

operation

Search)

combination

operations

similar

the beginning

to solenoid P, outlined in Figs.

in

very

lifted by

is

also supplied

solenoid

maintains

Since this

only

the head

idler

are released.

supplied

in

cue or

is

started after

already

of

started,

temporarily,

playback

mode

gear

with fast

to cue

MS

of

resulting

6-16, 6-17

period

short

capstan

P

is

head

the

PMS

base,

to

review

fast forward

solenoid F

reactiuated

and

(mechanically

and

opera-

in

of

torque.

to the

soon re-

base

solenoid

the

This

is

solenoid

opera-

or

Drive arm

Fig.6-21

Fast forward

TU

plate

Brake

Drive arm

operation

reel

base

bracket

-