Hitachi D-E99 User manual

@>HITACHI

SERVICE

MANUAL

I

TK

I

[-No.

1659E

D-E99

-·f~

(U,

C, FS, BS,

AU,

W)

CONTENTS

Specifications

......

..

...

..

. . . .

..

.

..

.

..

. . . .

..

.

..

.

..

.

..

.

...

. . .

..

. . . .

..

. . . . . 2

Disassembly

........

..

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

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

.........

2

Adjustment........................................................ 4

Inspection

of

mechanism. ................................ 6

Lubrications

...

7

Block diagram

..

........

8

Schematic diagram

.....

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

10

Circuit

board

diagram.

..

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

...

13

Wiring diagram.. . . .

...

16

Schematic diagram (Counter

PC

board

section)

...

19

IC

pin function table .

..

.

..

.

..

.

.....

20

®@@

Microprocessor test program......

26

Replacement parts list . ....................................

27,

31

Exploded

view(Mechanism-FL-32A)........ .

29

Exploded

view

(Cabinet)

.........

33

KEY TO ILLUSTRATIONS

CD

POWER

{MAINS)

SWITCH

®TIMER

SWITCH

@COUNTER

RESET

SWITCH

@TAPE

COUNTER

@ ELAPSED TIME RESET

SWITCH

@ELAPSED

TIMER

(j)

DIGITAL

PEAK METER

@ A TRS BUTTON

@ FIXED BUTTON

@ A TRS

ST

ART

BUTTON

([j)

BA

TIERY

INDICATOR

@

TEST

INDICATOR

@DOLBY

B/C

NR

CHANGE OVER

SWITCH

@

DOLBY

NR

SWITCH

@

MPX

SWITCH

@ RECORDING LEVEL CONTROLS

@

INPUT

SELECT

SWITCH

@ HEADPHONE SOCKET

@ MICROPHONE SOCKETS

® MONITOR SWITCH

@TAPE

SELECT SWITCHES

@AUTO/MEMORY

REWIND SWITCH

@

REC.

MUTE BUTTON

@PAUSE

BUTTON

@RECORD

BUTTON

@FAST

FORWARD BUTTON

@ PLAYBACK BUTTON

@ STOP BUTTON

rJj)

REWIND BUTTON

@EJECT

BUTTON

:[j)

OUTPUT

LEVEL CONTROL

SAFETY

PRECAUTION-------------------------.

The following precautions should be observed when servicing.

1.

Since many parts in the unit have special safety related characteristics, 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~

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.

SPECIFICATIONS AND PARTS ARE

SUBJECT

TO

CHANGE

FOR

IMPROVEMENT

STEREO

CASSETTE

TAPE

DECK

December 1981

TOKAI WORKS

O-E99

J

SPECIFICATIONS

<:;emiconductors :

Modules:

ICs:

Transistors :

FETs:

Diodes:

LEDs:

Track System :

Tape:

Tape

Speed:

Recording System and

Bias Frequency :

Erasing

System :

Erase Ratio :

Frequency Response :

NOR-I:

Cr02-ll:

FeCr-lll:

METAL-I\

5

11

58

2

58

14

4 track 2 channel stereo

Cassette tape (C-30,

60,

90)

4.75cm/s

AC

bias,

105

kHz

AC

erase

65

dB or more (at 1 kHz)

20

Hz-19

kHz

30

Hz-17

kHz±3

dB

25

Hz-18

kHz*

20

Hz-21 kHz

30

Hz-18

kHz±3

dB

25

Hz-19

kHz*

20

Hz-19

kHz

30

Hz-17

kHz±3

dB

25

Hz-18

kHz*

20Hz-21

kHz

30

Hz-19

kHz±3

dB

25

Hz-20

kHz*

S/N

(Signal

to

Noise

Ratio) :

Dolby

NR

OFF

:

61

dB (Weighted A, Re-

Dolby

B NR

ON

:

ference

3%

THD,

Metal tape)

61

dB*

69

dB

(Weighted A, Re-

ference

3%

THD, Metal tape)

69

dB*

Dolby C

NR

ON:

75

dB

(Weighted A, Reference

3%

THD,

Metal tape)

75

dB*

Wow

and

Flutter:

0.032%

(WRMS)

0.10%

*

Input Sensitivity and Impedance :

Microphone : 0.4mV,

300

ohms-5

kohms

Line in :

Output

Level :

Output

Load Impedance :

Line

out

:

Headphone:

Distortion

:

Channel Separation :

Cross

Talk :

Power

Supply :

Power

Consumption

:

Dimensions :

Weight:

Motor:

Heads:

*According

to

DIN

45

500

100mV,

50

kohms or more

500mV

50

kohms or more

8

ohms-2

kohms

0.8%

(1

kHz,

160

nwb/m)

30

dB

or more (at 1

kHz)

60

dB or more (at 1

kHz)

AC

120V,

60

Hz (U, C)

AC

100-110V/115-127V/

200-220V

/230-250V,

50/60 Hz (W)

AC

220V,

50

Hz

(FS)

AC

240V,

50

Hz (BS,

AU)

29W

110(H)X 435(W) X 282(0)mm

6.3kg

FG

Servomotor X 1

DC

motorX

1

1.4

mm

gap Metal R & P head

(ferrite)

Ferrite guard

Metal erase head

(Permalloy)

DISASSEMBLY

1. Cassette

door

Depress

the eject button to open the cassette door.

Remove

@ (two) nylon rivets

and

remove the cassette

door.

Note:

The

photos

used here show the

[WJ

model unit.

- 2 -

0

(

®

BT3X12

@

F3X10(BT)

•

~

1.___·

-/

@

BT3X10

@

BT3X12

W

BT3X12

©

BT3X10

2.

Upper

cover

Remove @ and © (two) screws.

3.

Bottom

cover

Remove © , @ , ® and ® (five) screws.

4.

Front

panel

Remove @ and @ (eight) screws.

5. Cassette

chassis

After

removing the

front

panel, remove ® and

CD

(three) screws.

6.

Power

PC

board

Remove Q) (two) screws and open

the

PC board.

7.

Main

PC

board

After

removing the

front

panel, remove ® , ® and

CD

(seven) screws.

@

BT2.6X6

U-t.~

GD

83

X6

CD

F3

x

10

(BT)

8.

Timer

switch

Press

the

projection

of

the

timer

switch

holder

in

the

direction

of

the

arrow

G)

to

remove

the

timer

switch.

Engage section @ and then press

the

switch

holder in

the

direction

of

the

arrow ®

to

install the

timer

switch.

Front panel

Timer

switch

Timer

switch

knob

9. Meter

PC

board

assembly

Remove @ (two) screws.

10.

Counter

PC

board

Remove @ (three) screws.

11.

Function

switch

PC

board

Remove

@ (four) screws.

- 3 -

ADJUSTMENT

Perform the following adjustments in the sequence stated after cleaning the heads, pressure rollers, and capstans with a head

cleaning stick moisted

in

alcohol. Also, unless otherwise specified, set the switches and controls

to

the positions indicated

in the

table.

(:''

Symbol

No.

Switches

and

Controls

Position Symbol No.

Switches

and

Controls

Position

S1

Input

select

switch

LINE

S2

Tape select switch

NOR-I

S3

Auto/memory

REW

switch

OFF

S4 Timer

switch

OFF

S5

Dolby

NR switch

OFF

S6

Dolby

NR

B/C

switch B

Measuring

Instrument

and

Connection

Check

Item

Adjustments

Measuring

Input

Output

Tape

Instrument

Terminal

MTT-111,

1

Tape

· Frequency

--

LINE

3000

Hz

speed

counter

OUT

(3150

Hz*)

Tilt

and

·Head

(1)

height

of

adjusting

--

the head

jig

2

(2)

Head

· VTVM

--

LINE

MTT-114

azimuth

~:~TRI

(10kHz)

·Audio

Digital

oscillator

3

peak

(400

Hz)

LINE

--

meter

·

Attenuator

IN

·

VTVM

MTT-150,

4

Playback

· VTVM

TP2L, R

400

Hz,

gain

--

20m

Max-

well

Note:

1.

Adjust

within

30

sec.

after heat-running for more than

20

minutes.

2.

Use

the

Hitachi

head

adjusting jig

and

instructions

(consult

nearest Hitachi office)

to

obtain the correct

head height,

tilt

and

azimuth. This adjustment

has

to

be

done alternately.

c

B

A

Fig.

1

- 4 -

S7

MPX switch

OFF

SB

Monitor

switch

TAPE

S109

ATRS

switch

OFF

S111

Fixed switch

ON

RV1L,

R Record level controls

MAX.

RV2L, R

Output

level control

MAX.

* According to

DIN

45

500

Adjusted

Mode

Remarks

Position

Value

Semi-

3000 Hz

Playback

variable

resistor in

+20H

- 5 z

See Note 1

the motor

(3150

Hz*)

Screw@,

Playback

--

See

Note 2

@.©

Playback

Screw©

Output

See Note 3

Max.

O

dB

--

RT303L, R

indicators

See

Note4

flash

--

Playback

RT301L, R

580mV

See

Notes

3.

When the maximum values

of

both channels are

dif-

ferent, adjust to the maximum value

of

the L channel.

In

this case, the difference between the maximum values

of

both channels should

be

within 2 dB.

4.

1)

Set the monitor switch

to

the SOURCE position.

2)

Feed

a

400

Hz signal

to

the LINE

IN

jacks and

adjust

the audio oscillator

output

so

that

the level

of

TP1L,

R

becomes

580mV.

3)

Then, adjust the attenuator

to

lower the output level

by

0.5

dB

and

adjust RT303L, R so that 0 dB indicators

of

the digital

peak

meter flash.

4)

Adjust

the attenuator to increase the

output

level

by

0.5

dB

and

confirm O dB

indicatms

of

the digital peak

meter

light up.

5.

Playback a test tape (MTT

-150,

400 Hz

20m

Maxwel

I)

and

adjust

RT301

L,

R so that the level

of

TP2L, R bec.omes

580mV.

I

\

0

(

t

D-E99

ATRS circuit adjustment

Measuring

Instrument

and

Connection

Check

Adjusted

Item

Adjustments

Tape

Mode

Position

Value

Remarks

Measuring

Input

Output

Instrument

Terminal

·Audio

oscillator

Hitachi

Output

Bias

(1.5kHz/15kHz,

LINE

difference

1

UD

C-90

Record RT103L, R

See

Note

1

current

OdB-23dB)

IN

OUT

tape

within

·

Attenuator

±0.5

dB

·

VTVM

(1)

Set

RV1

L,

R (Record level

control)

to

Minimum.

-

2

Bias

trap

See

Note

2

(2)

·

VTVM

--

TP3L, R

--

Record

L 108L, R

Min.

I

·Audio

I

oscillator

Hitachi

I

Ou

tout

3

Record

(1

kHz,

OdB-

LINE

UD

C-90

Record

RT102L, R

difference

See

Note

3

level

23dB)

IN

OUT

wit'lm

·

Attenuator

tape

±0

2

dB

·

VTVM

I

Set

the

AUTO/MEMORY

REW

switch

(S3)

to

PLAY

position

and

connect

a

diode

(1S2473

or

1S2076) as

shown

in

Fig.

2.

(1)

I

Then, set

the

power

switch

to

ON.

(Microprocessor

test

program

is

performed)

4

>---

AF

oscillator

(2)

·

VTVM

--

TP4

--

·Audio

oscillator

Hitachi

5

A/D

(1

kHz, 0

dB-

LINE

UD

C-90

conversion

23d8)

IN

OUT

I

tape

·

Attenuator

·

VTVM

Note:

1.

1)

Set

the

monitor

switch

to

the SOURCE position and

feed

a

1.5

kHz signal

to

the LINE IN jacks

in

the

recording

mode.

2)

Adjust

the

audio oscillator

output

so

that

the digital

peak meter indicates 0 dB. Then, adjust the attenuator

to

lower

the

output

level

by

23

dB.

3)

Set

the

monitor

switch

to

the TAPE

position

and

read

the

playback

output

level

of

LINE

OUT

jacks.

4)

Then,

set

the

audio oscillator frequency

to

15

kHz and

read

the playback

output

level

of

LINE

OUT

jacks.

5)

Adjust

RT103L, R so

that

the

output

level difference

between

two

frequencies is within

±0.5

dB.

2.

With

the

condition

shown

in

item

1,

set RV1L, R (Record

level

control)

to

Minimum. Then, adjust L108L, R so

that

the

level

of

TP3L, R becomes minimum.

- 5 -

Output

I

--

RT101

difference

See

Note

4

within

I

±0.3

dB

Record RT302L, R

OdB::0.3dB

See

Note

5

i

3.

1)

Set the

monitor

switch to

the

SOURCE

position

and

feed a 1 kHz

signal

to

the

LINE IN jacks

in

the

recording mode.

2)

Adjust

the audio oscillator

output

so

that

He

digital

peak meter indicates 0 dB. Then, ad1ust

the

a1tenuator

to

lower the

output

level

by

23

dB.

3)

Set the

monitor

switch to the TAPE

position

and

ad1ust RT102L, R so

that

the

output

level

dfference

between SOURCE and

TAPE

is

within

±_C2

dB

at

LINE

OUT

jacks.

4.

1)

Connect the VTVM to TP4. press the

PLA(

button

and

read

the

output

of

the 1

KHz

signal.

2)

Next, press the

REC

butto:i.

read the outp:1t

of

the

12

kHz

signal and adjust

RT101

so

that

the

output

difference between 1

kHz

s1·2nal

and

12

kHz ;i gnal

1s

within

_+

0.3

dB.

3)

After

adjustment, remove a diode

as

shovvn

ir

Fig.

2.

0-E99

1

2

3

4

5

6

7

8

9

IC401

Pin@

152473

or

152076

Fig. 2

5.

1)

Perform the

ATRS

test using Hitachi

UD(C-90)

tape.

2)

Set the monitor switch

to

the SOURCE position and

feed a 1 kHz signal

to

the LINE IN jacks

in

the

recording mode.

3)

Adjust

the audio oscillator

output

so

that

the digital

peak meter indicates

0 dB. Then, adjust the attenuator

to lower the

output

level

by

23

dB.

·4)

Read

the

output

of

LINE

OUT

jacks when the

monitor

switch

is changed over, and adjust RT302L,

R so

that

the

output

when the MONITOR switch

is

set

to

TAPE is within ±

0.3

dB with respect to the

output

when the monitor switch is set

to

SOURCE.

INSPECTION

OF

MECHANISM

Check Item Reference Value

Remarks

Pressure

roller

Pressure

420-500g

(Take-up side)

Measure

in

playback mode (Fig.

3)

Driving force

120g

or more

Pressure

of

pressure roller (Supply

130-180g

Measure

in

playback mode (Fig.

4)

side)

Pressure

of

take-up idler

60g

or more

Measure

in

playback mode (Fig.

5)

Take-up

35-65g·cm

Torque

Fast

forward

Measure

in

fast forward mode

75-110g·cm

Rewind

Measure

in

rewind mode

Supply side

(See )

Back tension

9-12g·cm

Note 1

Measure

in

playback mode (Fig.

6)

Take-up side

1.7-5g·cm

Supply side

Brake torque

50-100g·cm

Measure

in

stop mode

(Fig.

7)

Take-up side

Head

plate return strength

200g

or more

Measure

in

stop mode

(Fig.

8)

Head

plate play lock allowance

300g

or more

Measure

in

playback mode (Fig.

9)

Head plate pressing strength

150g

or more

Measure

in

playback mode (Fig.

10)

- 6 -

•

)

Tape driving

force

Fig.

3

Brake

plate

~

i : :

.i~-

'@>i'i;

Supply

side

Take-up

side

brake

torque brake

torque

Fig.

7

Note

1.

Back tension adjustment

Head plate

Pressure

of

pressure roller

(Supply

side)

Fig.

4

Head base

Head

plate

return

strength

Fig. 8

When the supply back tension is

out

of

the reference value, loosen

the

BT

spring fixing screw and move the BT spring up and down to

adjust

so

that the back tension is within the reference value.

Reel

(Take-

up

side)

Fig.

5

Head

plate

play lock

allowance

Fig.

9

BT

spring

fixing

screw

LUBRICATIONS

'· Lubricate one or

two

drops

of

oil to rotating

point

or

lubricate

grease

to

sliding point.

Lubrication

Lubricate the respective parts listed once every

1000

hours

or

once

a

year

under normal conditions

of

use.

Avoid

oiling them excessively, or rotation

may

become

irregular

because

of

oil splashes.

Rotary

section

Sliding

section

Metal and metal

Mold and metal

Metal and metal

Mold and mold

Mold and metal

Supply

side

backtension

Take-up side

backtension

Fig.

6

El~~

Head

plate

I

D-E99

pressing

Chassis

base

strength

Fig.

10

Oil

or

Grease

Pan

motor

oi

I

(10W-40)

Sonic

slider

oil

(#1600)

Hitasol

(M0-138)

White grease

(FL-LUBE-A)

Spring resonance prevention Froil

(GB-TS

-1)

- 7 -

:i-

t

D-E99

JI(

IL

luHE

IHI

JK2

~]

BLOCK DIAGRAM

SI

~

QIOIL

MIC.

AMP.

To Reh

+ 14 v

0301

L

Q302L,303L

PRE.

AMP

P.B.EQ

AMP

MODI

OIL

DOLBY-NR

<RECORD I

r-----------------------------

1

I

BIAS

TRAP

L301L

+IOV

RHB

RH9

MOD301L

r-----------------------,

DOLBY-NRI

_/

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(PLAY

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030'IL

SWITCHING

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EQl

I

0420

421,

423

REVERSE

CURRENT

PREVENT! N

0413

R428

SWITCHING

<FOR

RESET!

SOLEHOIO

OET.

INPUT

TAPE

EHO

PULSE lf!PUT

+14V

~

i:;>T'302~

A/D

CONVERTER AOJ.

0416,417

SWITCHNG

+l

4

V

0107L

MUTING

IREC.

SIGNAL!

QIOBL

REC.

AMP

52

- I

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D-E99

(3J(2)(1)

(4)(3)(2)(1)

~--+-+--------+-.f.-,

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OSC.

!C301Ul/2l

LINE

AMP.

!SPECTRAL

DES

KEW

ING l

'

' '

~~

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Q30!5L

.

R3l8L

SWITCHING -

(5fl~.:~~)

CPU.

MEMORY

lbl

0102

SWITCHING

>T-1~~1-~~-1-~-.;-~-~_,_:__{'.

),---.---~

+

22V

To I

C404

@rERMIHAL

010~

SWITCHING _...-

To

R315L

Rl46

0106

SWITCHING

RV2L

{OUTPUT]

--------<--+-<

%1'

~

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MUTING

R325L

0308L,308R

IC

302

IC303L

r----,

PHONES

AMP.

R323L

To

Rc:tt

ZDJOI

MUTING

SWITCHING

(A/0

R/L

SELECT! AMP.

RECT.

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r----,

..'.~:r.:~r

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STOP

0409

l-'2el---<-+'-----+--+--"

SWITCHING

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Rl76l

0431

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HEAD

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r--,,;;;~;;;---,

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I

li

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o

58-3

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TAPE

se

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I

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0513

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--

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LEDl3

=TAPE'

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R442

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fi;:··-~1

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(

M~v;:~T~H6;ffvEt

I

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-------

- 8 -

- 9 -

Note

1.

Voltage measured

al

base

of

chassis with minimum

volume control and no signal.

2.

Nomenclature

of

Resistors

and

Capacitors.

r -

--

- -

Circuit

No.

'

Value

No

indicated

ll(Ohm)

'

r--

-

M:

1000kll

'

f '

' '

No

indicated ±5%

R101

:

,---

Tolerance

K

:±10%

150-"

'

M:±20%

~s·1·K-_;

r

._

_____

Wattage

No

indicated

v.w

'

No

indicated Carbon film

:

RC

: Composition

lo--------

Sort

RW

: Wire wound

RS : Oxide metal

film

RN :

Fixed

metal film

Circuit No.

'

No

indicated

µF

:

Value

P:

PF

'

No indicated

±10%

..L

c1'01

:

J:

±

5%

M:±20%

To.001.-M'--

--

Tolerance

z: +80%,

-20%

D:

±0.5pF

C:

±0.25pF

.L

Ceramic

T

:+

Electrolitic

Sort

~

Mylar

T

!:I..

Polyester

T

++

C102

'l.I..

Styrol

T

-

0.1/16-,

__

-

Vollage

No

indicated 50WV

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 staled on parts

list since required

temperature characteristics.

SCHEMATIC DIAGRAM

r-

o";Oi"L

--;.;,-L-;

--M;L~E~

-a~;:-'

--.;w;-

-IC-;;-

-

Q~

-

;L

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--

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~

-

;.,7--

L£Oii

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IclOZ

lc1'0!

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o.;3-M003o1L--o'i"O'SL

--

jc;o;L

-

o;L

-01();

bsc1?40LN

2sc2021 2SC2021

TA30118

SLRS3URCI

ZSC4ll8CO

152473

pP040llC

2SK68A-N

2sc1740LN-SE

HZ91

2SC4HCO

1sc!o21

SLR54GC

SL-C

HDl40668P

HAl205S

ZSC4S8CD

152475

IS2475

TA3011B

ZSC4511CO

NJM4SS80 2SD65!1E

1s2c·

I

-SE

SWITCHING

DOLBY-NR SWITCHING SWITCHING

"Af

DSC

PRE

AMP.

P.8 EQ AHP.

VOLT.

STAB.

SWITCHING SWITCHING

RECITEST

ATRS

SWITCHING

SWITCHING OOLBY-NR

SWITCHING

LINE

AMP.

MUTING

SW1TC1

MIC. AMP.IFOR HPXllLEO DRIVEi

IRECORDI

lP.8

EQ

SWITCHNG-LEO DRIVEi

REC

SWITCHING

IPLAY

BACKl(b~W~lt.a)

(~~~~G

)

MOOIOIL

l3.5 !DOLBY

8/C

I

IOY

r----------------------------------

I&

~

JICIL

JK2

RIOIL

...

I

R102l

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PLAY

HEAD

r--'

I

IC403

)&P04011C I

BATTERY

WARNING

Z0406

I

HZ49C

VOLT. STAB.

0426

I

152473

LEVEL SHIFT I

IC401

I

H044801A3S

MECHANISH/ATRS I

CONTROL

D407

IS2473

REVERSE

CURRENT

I

PREVENTION

I

D402

:itlJ.NG

I

LED4

I

5LR34URS

D417

112473

REVERSE

CllllENT

PREVENTION

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TLG12U

LEDS

TLG123A

LEDq

I

SLRS3URCI

I

®

C401

tM6

- .

...

,

680

SI

I

=~-mt-

~

·

LIN(;

IOV

Cl56

47/16

Q403

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:;;;,=.

..

;--;:;;;--;-40-;-

~D~~D-;-040-;-;;;;:

-;.

o;,:;-Q40.:40T.409-

-

2SC4S8CO

2SC4ll8CD

2SCA9CD

2SC45eco

SLR

TLGl23A

1awa

IS2473

182473

19"2473 2SC4ll8CD

SWITCHING SWITCHING

SWITCHING

34URS

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CURRENT

SWITCHING

ILEO

DRIVE

I ILED DRIVEi PREVENTION I

LED

DRIVEi

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,

I

J

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®

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IOKlll

...

osc.

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..

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..

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L-----i--+---•CMI

DAU

lT•

tao:s I

...,..._

______

..._

____

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14-1

'2:

LJll

0

i~

_

_Jl_

luLfl

0105

0106

L----

IC401 0

RIJTL

9.21C

+

Cl27L

10/16

0105

C145

I0/'16

...

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R147

4.7J(

....

470

ICAOI

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....

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..

•..

IC40r

0

....

...

IC401 @

..-.+--_.

ON

1

POWER

~

n

OH

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46

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M

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---------------

- -

1C402

D405.404.405

D408.~IO

Q50T.508L.I08ft

D411

PST51S

IS2475

IS2473

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PULSE

REVERSE

CURRENT

SWITCHl!Ol SWITCH I

NG

SWITCHING

GENER.<tl"OR

PREVENTION

lA/D

R/L

SELECTION!

D406

IS2473

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-- --

--

---

-- ----

----

-

----

Q4l0,

411

1C502

l/Z

lCIO

4 DllOI

Qll09

0412 D412 ~I ZD405

==

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1111

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2

t

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0302,303

2

·~~~l~

~

SHIFT

0433

152473

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--

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-

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1ci0'5

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- ITTO;L-

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2

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21

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CHING

AFOSC

PRE

AMP.

PB

EQ AMP.

VOLT

STAB

SWITCHING SWITCHING

REC/TEST

ATRS S"'ITCHING

S"'ITCHING

OOLBY-NR S"'ITCHING

LINE

AMP.

MUTING

SWITCHING

MUTING SWITCHING MUTING

REC.

AMP

LEVEL

BIAS

S"'ITCHING

BUFFER

REC

BIAS SWITCHING ERASE

• · · · . . lP.B

EQ

SWITCHING~LEO

DRIVEi

REC

SWITCHING

IPLAY

BACKl(SPECTRAL ) (SPECTRAL )

IREC.

SIGNAU

SHIFT

CONTROL

OSC.

(

ERASE

BIAS )BIAS

OSC.

1

ZD:501A,B

HZ-118

x 2

VOLT.

STAB.

RIIS

J5K

0101

flll4

4.TK

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7

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4,7

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l

LEO

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®

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J

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'----!--+--+-

CllO

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--------------

0424,421

lC40ll

0405.404.405

0409.4!0

Q507.soet..ll0811

0411

1Sll47ll

PSTSl5

112473

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GENER=i!

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lA/D

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152473

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0103

0106

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IC401

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w.a:.

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0

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INPUT

R

LIRI

20K'9J

I GltO

1_

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100/20

I

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I

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J.

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47

RS:NU!IE

REC.

HEAD

I

0105

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I SWITCHING

I

12.5METAL

16.7NORMA

OTHER

0.6

I

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HEAD

.--~~~-1-+-1-<:,_:'L;X

I

R324L

..

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I

1

0115

2SA673AC

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I

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METER

I

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1

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AMP.

Lf:OlS

TLGl23A

"K-2

~

I

LE012

SLR34UR5

QSDI

2SCl061S-C

VOLT.

STAB

OSl7

OSl35D

RECT.

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2SCI061S-C

VOLT. STAB.

D502

DSl350

RECT.

ZD404

HZllB

VOLT.

STAB.

Z0502

HZl2C

VOLT.. STAB

0508

DSl350

RECT.

D423

llS13SO

REVERSE

CURRENT

PREVENTION

D5l6

DSl350

RECT.

D501

DSl35D

RECT.

-----~-----------

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_

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I

.,JK

IL

jLINE

OUT I

R47S

IOOIC

l-11.1

0302,503

ZD402

04M,419

0415.416

0420,421

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SHIFT

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SHIFT

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s

2

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CONTROL

lSOLENOIO

Cl..f<RENT

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!

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PREVENTION

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507

0515

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2SC4~8CO

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HZ6B

VOLT.

STAa

I

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I

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2'

Q505

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2SC459CD

2$0947

VOLT. STAB. SWITCHING SWITCHING SWITCHING

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152473

RECT.

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r-fror

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FSl

I

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I

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0Sla50

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D508

OSl350

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Z0503

HZlll2

VOLT. STAB.

Z0405

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LEVEL

SHIFT

(·•··.·

(

CIRCUIT BOARD DIAGRAM

I

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PAUS£0

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18

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SCHEMATIC

DIAGRAM

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PC

Board

Section)

FLI

FLUORESCENT

DISPLAY

r:-----

1

II

If

1-1

'111

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I

TAPE

COUNTER

R450

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7

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12

13

14

15

16

17

18

10

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SOURCE

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I

IC PIN FUNCTION TABLE

1.

IC401

(HD44801

A35

for

mechanism/

ATRS control)

I

No.

Symbol

Function •

1

BIAS

• Control output pin to operate the

bias

oscillation circuit. Outputs

Lo

potential normally

and Hi potential

in

the

REC

mode

and

the REC-PAUSE mode after recording.

Outputs

after elapse

of

the

inhibit

time

of

120

ms

when the mode is changed from STOP, PLAY

or

PAUSE,

and

outputs after elapse of the inhibit time

of

820

ms

when the mode is changed

from

FF

or

REW.

2

TAPE SELECT

1

• Tape select switch (S2) position detection input pin.

Detects the tape

select switch

3

TAPE SELECT 2

position according

to the truth table shown below and changes over the

output

data.

I

~n

NORMAL

FeCr

Cr02

METAL

I

s

Pin(V

0 1 0

1

Pin@

I

0

1 1

4

TEST START • ATRS test start detection input pin. Inputs Hi potential normally

and

inputs

Lo

potential

by

the button operation

in

the

REC,

REC-PAUSE

or

REC-HOLD mode, to detect the

ATRS test start. The

ATRS

test starts actually when the input is detected during the

REC

or REC-PAUSE mode.

• Outputs

Lo

potential when executing the ATRS

test

and

outputs Hi potential normally.

5 TEST INDI.

·

Test indicator drive

output

pin. Outputs Lo potential normally

and

outputs

the flashing

pulse with

1.28

sec. period when executing the

ATRS

test. When error occurs during

(

the ATRS test, the flashing pulse with

160

ms period is

output

as

error indication.

This error indication continues

until the play button

or

pause button

key

input is given.

l I I

I

J1IU1illlJ1JUUl

!

I

-H

~-Borns

I

--1

640ms

r-

1

i

1.28s

I

--i

f---160nis

••

6

AFOSC

• AF signal oscillator control

output

pin.

Outputs Hi potential until ATRS test

starts

when

(1

kHz/12 kHz)

I

power

is

ON,

and

outputs

Lo

potential

when

recording the

12

kHz

signal during execution

I

of

the ATRS test. It is set to the

Lo

potential

output

mode after A TRS test is completed.

"-

7

A/D

COMP.

i

·

A/D

comparator output input pin.

I

Detects the inversion

output

(fall signal from

Hi to

Lo

potential)

of

the

A/D

comparator

during execution

of

the

ATRS

test.

---

8

A/D

RESET

•

A/D

comparator circuit reset control output pin.

Outputs

Lo

potential

in

other

modes

than the ATRS operation,

and

outputs

Hi potential

with

80

ms

width

for

approx. 3

sec.

after power is supplied

or

just

after scanning the

A/D

comparison reference voltage during execution

of

the ATRS test to reset the

test

sample

hold.

9

A/D

SELECT

I

·

A/D

comparison circuit input (play output signal) channel select control

output

pin.

When

Hi

potential

is

output : R channel

When

Lo

potential

is

output : L channel

- 20 -

D-E99

Symbol

Function

No .

•

10

LINE MUTE • LINE amp final stage muting control

output

pin.

Outputs

Hi potential during

REC,

PLAY

and

REC-PAUSE

after recording

to

mute the

play signal

of

the LINE amp output.

Hi potential is

output

after

elapse

of

the

inhibit

time

of

120

ms during play, after elapse

of

the

inhibit

time

of

400

ms during record and

after

elapse

of

the

inhibit

time

of

1100

ms

when changing the mode from

FF

or

REW.

11

REW

SOL.

REW solenoid drive

output

pin.

Outputs

Lo

potential normally and Hi potential during

REC,

PLAY

and

REW.

--

-

-----------

12

FF

SOL.

FF

solenoid drive

output

pin.

Outputs

Lo

potential normally

and

outputs

Hi potential

I

during REC,

PLAY

and

FF.

'

13

PAUSE SOL.

i

· PAUSE solenoid drive

output

pin. Outputs·

Lo

potential normally and

outputs

Hi potential

I

during REC-PAUSE mode and

PLAY-PAUSE

mode.

I

-·---------------------~

•

14

NC

· Blank pin.

--------·---

15

RESET

I

· Initial reset

input pin.

This

pin input is set

to

Hi potential when power is supplied

to

perform initial resetting.

--

-----~

16

GND

· Connected

to

GND

---

--

17

osc 1

· The external resonance

circuit

is coupled

with

these

pins

to

operate the

built-in

clock

•

18

osc 2

oscillation circuit which is the

reference

of

microprocessor

operation. The oscillat1on

frequency is set

to

400 kHz.

-

-------------------·---

19

HALT

·HALT

pin. This pin changes from

Lo

potential

to

Hi

potential when power is supplied

I

and the program

of

the

microprocessor is executed.

It

is

set

to

Lo potential when povier

is set

to

OFF

and the execution

of

the program

stops

and is held.

-~

20

TEST

• Microprocessor test pin. Connected to Vee pin @ because

this

is

not

used.

•

21

Vee

• Power pin. Applies

+5V.

-

22

VCA SELECT 0

•

A TRS IC

(HA

12035)

control

output

pins.

Output

during

REC,

REC-PAUSE

and REC-

I I

HOLD, and designate the object of the

ATRS

IC internal

circuit

to

be

controlled

by

t~e

24

VCA SELECT 2 control data

output

from

the

data

output

pins

.~~~~'·

These

outputs

are composed

Df

the

3-bit

signal.

Output

pins

@

®

Designation

function

I

0

i

0

--------

0

Designates

that

data

has

no

meaning.

0

I

0

1

Designates

that

it

is 1 kHz, Leh

data.

--

0

I

1

0

Designates

that

it

is

14

kHz, Leh data.

I

0

I

1

Designates

that

it

is

bias

data.

·-----------

1

0

Designates

that

14

kHz, R eh

data.

--

1

0

1

Designates

that

it

is 1 kHz, R eh

data.

1 1 0

Designates

that

1t

is

AID

comparison

reference

voltage.

I

1 1

1

Designates

to

clear

all

data.

I

·

Auto/memory

rewind

switch

and timer

switch

position

detection

output

pin.

Outputs

1'1

when detecting switch position.

-

21

-

------.-...--

..

-----------<~----

-----

---~----~-----

-----~~.

Symbol

Function

No.

•

25

IC MUTE

• IC muting control

output

pin.

26

DATA

O(LSB)

• ATRS IC

(HA12035) control

output

pins.

The control data is

composed

of

4-bit signal

I

and

output

during

REC,

REC-PAUSE and REC-HOLD.

29

DATA

3(MSB)

•

Auto/memory

rewind switch and timer switch position

detection

input

pins. Input the

timer switch position detection signal for 3 sec. after power is supplied,

to

judge the mode.

Input

pins

Criterion

mode

®

I

® ®

®

0

I

0

x x

Test

program

execution

0 0

DATA2

Timer recording

0

1

+ DATA3

1 0

Timer play

= 1

1 1

••

30

REEL PULSE

• Input

of

tape end detection Hall element pulse

output.

When the take-up reel disk

stops rotating, pulse input disappears and tape end is detected

with

pulse

not

input

for

3 sec. or more during

REC

and PLAY, and

for

1 sec. or more

during

REW and

FF.

I

• Tape count

during the memory rewind function operation is done

counting the

input

I

pulses.

---·--------.

31

ATRS

· ATRS mode input pin. Judged as ATRS mode with Lo potential input.

(

32

REC MUTE

•

Auto

REC

MUTE detection

input/output

pin. When Le potential is

input

by

the REC-

MUTE button operation during

outputting

Hi potential (during REC or

REC-PAUSE

mode),

it

is judged

as

auto

REC

MUTE mode and Lo potential is

output

for

approx. 4 sec.

33

PAUSE

· PAUSE mode input pin.

Judged

as

PAUSE mode with Lo potential input.

~---

34

REC

•

REC

mode input pin. Judged

as

REC

mode with Lo potential input.

I

-l

--

35

FIXED

· ATRS FIXED

mode input pin. When Lo potential is input,

it

is judged

as

FIXED mode

and

the

REC

control data

output

is changed over from the A TRS data

to

FIXED data.

I

· When the Lo potential is

input

and

it

is judged

as

FIXED mode, Lo potential is

output

to

I

light the FIXED indicator and makes

ATRS

indicator go

off.

-----------~----

36

STOP

·~TOP

mode input pin.

When Lo potential is input,

it

is judged as STOP mode.

-----

-

37

FF

·

FF

mode input pin.

When Lo potential is input,

it

is judged as

FF

mode.

I

38

PLAY

• PLAY mode input pin. When Lo potential is input,

it

is judged as

PLAY

mode.

• When the timer record

or

play is set within 3 sec. after power is supplied,

Lo

potential is

I

output

after approx. 3 sec.

Outputs

Lo potential with approx.

80

ms width simultaneously

I

with the play operation

start

in

the auto rewind play mode.

This Lo

potential is

the

one

action

control signal when the unit is combined with the system component stereo.

I

-

----------~----

39

REW

·

REW

mode input pin.

When

Lo

potential is input,

it

is judged as REW mode.

-

22

-

l

No.

40

41

42

Symbol

PLAY INDI.

PAUSE INDI.

REC

INDI.

Function

• PLAY indicator drive

output

pin. Flashing pulse is

output

synchronizing with the reel

pulse

input during

REC

and PLAY. When the time

of

light

gone

off

becomes 500 ms, Hi

potential is

output

regardless

of

presence/absence

of

the reel pulse input.

· Outputs Hi potential during REC-PAUSE

and

PLAY-PAUSE.

· When the

REC

and PLAY buttons are pressed simultaneously within 3 sec after power is

supplied and reset is completed,

or

during the timer recording or play, flashing pulse is

output

with

180

ms period for 3 sec. after resetting, and Hi potential is

output

after

elapse

of

3 sec.

· PAUSE indicator drive

output

pin.

Outputs

Hi potential during REC-PAUSE and

PLAY-

PAUSE.

· Flashing pulse is

output

with 1.3 sec. period during the

AUTO

REC

MUTE,

and

Hi

potential is

output

after

AUTO

REC

MUTE is completed .

.

Flashing pulse is

output

with 160 ms period during the timer

stand-by

mode and the Lo

potential is

output

after the mode is complete.

MUTE button

FF,

REW

button

I Y

Tape

end

(

REC

x.

STOP , REW

FF

:

STOP

I ) : I

I I I \

l.3s

--.J

160ms

4s--~.-l

(AUTO

REC MUTE)

·

REC

indicator drive

output

pin.

Outputs

Hi potential during

REC,

REC-PAUSE

and

REC-HOLD.

· When the

REC

and

PLAY

buttons are pressed simultaneously within 3 sec. after power is

supplied

and

resetting is complete

or

during the timer recording, flashing pulse is

oLtput

with

180

ms

period

for

3 sec. after resetting is completed, and Hi potential is

output

after

3 sec.

-

23

-

u-

c:.

;:::n:1

·E99

2.

IC404

(µPDSSOC

062,

for

counter

with

stopwatch)

Symbol

Function

No.

•

1

CLOCK 1

• The external resonance circuit is coupled with these pins

to

operate the built-in clock

oscillation

circuit which is the reference

of

the microprocessor operation,

and

the oscil-

28

CLOCK 0

lation

frequency is set

to

400

kHz.

2

TIMER CLEAR

•

Elapsed

time indication timer (stopwatch indication) zero clear input

pin.

Inputs

Lo

potential normally

and

outputs Hi potential during button operation.

3

a

• Fluorescent display tube plate segment drive output

pins.

The Hi

potential output

l

segment is

lit

synchronized with the grid select signal.

9

g

~t

b

d

f

I c o

a

c e

9

0 1 1

1 1 1 1

0

1 0 1

1

0 0

0

2

1

0 1

1

0

1

a

3

1 1

0 0 1

4

0

1

0 0 1

1

'$t

e c

5

1

0

1 1 0 1

1

6

1 0 1

1 1 1 1

d g

t

7

1 1 1

0 0

0

8

1 1 1 1

1 1 1

9

1 1 1 1 0

1 1

-

0 0 0 0 0 0 1

•

10

9

• Fluorescent display tube dynamic drive grid select (for display digit scanning) data output

I

pins,

and

the display

of

the Hi potential output digit is lit.

13

5

~

Tape

counter

Elapsed time

16

4

3

rd

2 nd

1

st

10

1

-

10

sec

1

sec

l

I

n

digit

minute

19

1

1(pin@)

0 0 0 0 0 0 0

1

2(pin@)

0

0 0 0

0

1

0

3(pin@)

0

0 0 0 1 0

0

4 (pin

(i6)

)

0 0 0 0

1

0

0 0

5 (pin

@)

)

0

0 1 0 0 0

0

7(pin@)

0 0

1

0 0 0

0 0

B(pin@)

0 1 0 0 0 0 0

0

9 (pin

@)

}

1 0 0 0 0 0 0

0

14

Vss

• Hi side power pin. Applies +

10V.

15

TEST

•

Microprocessor test pin.

Connected to Vss pin because this is not used.

20

NC

·Blank

pin.

21

FF

SOL.

• Mechanism operation (solenoid operation) detection

input pin.

Addition/subtraction

22

REWIND

SOL.

to/from the tape counter or addition

of

the

elapsed

timer is executed

by

inputting, and

displayed to the fluorescent display tube.

- 24 -

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Hitachi D-E99 User manual

Hitachi D-E99 User manual

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