Marantz SD-4051 Service Manual

Service

SD4051

SD4051 /

F B/N1B

Manual

DOLBYNR

DOLBYNR

B

B

OFF

OFF

TIMER

TIMER

REC

REC

OFF

OFF

PLAY

PLAY

REV.MODE

REV.MODE

CONT PLAY

SECTION PAG E

1. TECHNICAL SPECIFICATIONS ........................................................................................... 1

2. ADJUSTMENT PROCEDURE .............................................................................................. 2

3. WIRING DIAGRAM ............................................................................................................... 7

4. BLOCK DIAGRAM .............................................................................................................9

5. SCHEMATIC DIAGRAM ...................................................................................................... 11

6. PARTS LOCATION ..............................................................................................................21

7. MICROPROCESSOR AND IC DATA .................................................................................. 25

8. EXPLODED VIEW AND PARTS LIST ................................................................................ 27

9. ELECTRICAL PARTS LIST ..................................................................................................31

10. ABOUT REPLACE THE MICROPROCESSOR WITH A NEW ONE .................................. 45

ON/OFF

ON/OFF

POWER

POWER

AUTOTAPE SELECT/HIGHSPEED DUBBING

AUTOTAPE SELECT/HIGHSPEED DUBBING

CASSETTE DECK SD4051

AUTO REVERSE

AUTO REVERSE

RESET

RESET

DUBBINGSPEED

DUBBINGSPEED

NORMAL

SYNCREV

NORMAL

SYNCREV

STOP

STOP

EJECT

EJECT

PLAY

PLAY

A

A

RECLEVEL

RECLEVEL

HIGH

HIGH

PLAY

PLAY

MIN

MAX

MIN

MAX

PITCH

PITCH
CONTROL

CONTROL

TABLE OF CONTENTS

Cassette Deck

COUNTERCOUNTER

COUNTERCOUNTER

RESET

RESET

PAUSE

RECMUTE

PAUSE

RECMUTEREC

AUTO REVERSE

PLAY

STOP

PLAY

STOP

PHONES

PHONES

EJECT

EJECT

REC/PLAY

REC/PLAY

B

+

+Ð

B

AUTO REVERSE

AUTOTAPE SELECT/HIGHSPEED DUBBING

AUTOTAPE SELECT/HIGHSPEED DUBBING

Please use this service manual with referring to the user guide ( D.F.U. ) without fail.

SD4051

Part no. 90M16CW855010

First Issue 2006.07

MZ

MARANTZ DESIGN AND SERVICE

Using superior design and selected high grade components,
Only original

MARANTZ

parts can insure that your

MARANTZ

MARANTZ

product will continue to perform to the specifi cations for which

company has created the ultimate in stereo sound.

it is famous.
Parts for your

MARANTZ

ORDERING PARTS :

equipment are generally available to our National Marantz Subsidiary or Agent.

Parts can be ordered either by mail or by Fax.. In both cases, the correct part number has to be specifi ed.
The following information must be supplied to eliminate delays in processing your order :

1. Complete address

2. Complete part numbers and quantities required

3. Description of parts

4. Model number for which part is required

5. Way of shipment

6. Signature : any order form or Fax. must be signed, otherwise such part order will be considered as null and void.

USA

MARANTZ AMERICA, INC

100 CORPORATE DRIVE
MAHWAH, NEW JERSEY 07430
USA

AUSTRALIA

QualiFi Pty Ltd,

24 LIONEL ROAD,
MT. WAVERLEY VIC 3149
AUSTRALIA
PHONE : +61 - (0)3 - 9543 - 1522
FAX : +61 - (0)3 - 9543 - 3677

EUROPE / TRADING

MARANTZ EUROPE B.V.

P. O. BOX 8744, BUILDING SILVERPOINT
BEEMDSTRAAT 11, 5653 MA EINDHOVEN
THE NETHERLANDS
PHONE : +31 - 40 - 2507844
FAX : +31 - 40 - 2507860

THAILAND

MRZ STANDARD CO., LTD

746 - 754 MAHACHAI ROAD.,
WANGBURAPAPIROM, PHRANAKORN,
BANGKOK, 10200 THAILAND
PHONE : +66 - 2 - 222 9181
FAX : +66 - 2 - 224 6795

CANADA

MARANTZ CANADA INC.

5-505 APPLE CREEK BLVD.
MARKHAM, ONTARIO L3R 5B1
CANADA
PHONE : 905 - 415 - 9292
FAX : 905 - 475 - 4159

SINGAPORE

WO KEE HONG DISTRIBUTION PTE LTD

No.1 JALAN KILANG TIMOR
#08-03 PACIFIC TECH CENTRE
SINGAPORE 159303
PHONE : [phone]
FAX : [phone]

NEW ZEALAND

WILDASH AUDIO SYSTEMS NZ

14 MALVERN ROAD MT ALBERT
AUCKLAND NEW ZEALAND
PHONE : [phone]
FAX :[phone]

JAPAN

D&M Holdings Inc.

D&M BUILDING, 2-1 NISSHIN-CHO,
KAWASAKI-KU, KAWASAKI-SHI,
KANAGAWA, 210-8569 JAPAN

TAIWAN

PAI- YUING CO., LTD.

6 TH FL NO, 148 SUNG KIANG ROAD,
TAIPEI, 10429, TAIWAN R.O.C.
PHONE : +886 - 2 - 25221304
FAX : +886 - 2 - 25630415

MALAYSIA

WO KEE HONG ELECTRONICS SDN. BHD.

2ND FLOOR BANGUNAN INFINITE CENTRE
LOT 1, JALAN 13/6, 46200 PETALING JAYA
SELANGOR DARUL EHSAN, MALAYSIA
PHONE : +60 - 3 - 7954 8088
FAX :[phone]

KOREA

MARANTZ KOREA CO., LTD.

ROOM 604, ELECTRO OFFICE, 16-58,
HANGGANG-RO 3GA, YONGSAN-KU,
SEOUL, 140-013, KOREA
PHONE : +82 - 2 - 323 - 2155
FAX : +82 - 2 - 323 - 2154

CHINA

MARANTZ SHANGHAI TRADING LTD.

ROOM.506 SHANGHAI LIGHT INDUSTRY MANSION
1578 NANJING (WEST) ROAD SHANGHAI
CHINA
TEL : 021 - 6248 - 1064
FAX : 021 - 6248 - 3565

SHOCK, FIRE HAZARD SERVICE TEST :

CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary AC

cord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product
and controls and chassis bottom.
Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied,
and verifi ed before it is return to the user/customer.

In case of diffi culties, do not hesitate to contact the Technical

Department at above mentioned address.

060607MZ

1. TECHNICAL SPECIFICATIONS

Type

Vertical tape loading; 4-track 2-channel

stereo double cassette deck

Heads Playback head × 1

Recording/Playback head × 1

Erase head (Double-gap ferrite) × 1

Motors DC servo motor × 2

Tape Speed 4.8 cm/sec. 9.5 cm/sec.

(When high speed dubbing)

Fast Forward,

Rewind Time Approx. 110 sec. with a C-60 cassette

Recording Bias Approx. 100 kHz

Overall S/N Ratio

(at 3% THD level) Dolby B NR on: more than 68 dB

(CCIR/ARM)

Overall Frequency

Response 25 - 18,000 Hz ± 3 dB

(at - 20 dB, Metal tape Play back)

Channel Separation More than 40 dB (at 1 kHz)

Wow & Flutter 0.09 % WRMS, ± 0.1 % W. PEAK

Inputs LINE 100 mV input level at maximum

Input impedance: 50 kohms

unbalanced

Output LINE 460 mV (0 dB) output level at

maximum

(with 47 kohms load, recorded level of

200 nWb/mm)

PHONES 0.95 mW output level at maximum

(optimum load impedance 8 ohms)

Power Requirement AC 230V 50Hz [/N]

Power Consumption 16 W

Dimensions 440 (W) × 124 (H) × 286 (D) mm

Weight 4.0 kg (8.58 lbs.)

トラツク型式
録音方式
ヘッド

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

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

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

4

モーター
ワウフラッター

周波数特性
 メタルテープ
 ハイポジションテープ
 ノーマルテープ

S/N

入力端子
 ライン
出力端子
 ライン
 ヘッドホン
電 源
消費電力
最大外形寸法
 幅
 高さ
 奥行き
質 量

● 付属品
オーディオコード
リモート接続コード
リモコン（
単3乾電池（

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

.......

0.09％ WRMS［±0.1％ W･PEAK（EIAJ

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

DC

30 Hz

......................... 30 Hz〜18 kHz ± 3 dB

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

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

比

DOLBY-B NR ON時 10 dB

58 dB

（

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

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

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

0.95 mW

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

30 Hz

ピーク録音レベル聴感補正

EIAJ/

100 mV

460 mV

（

8 ohms−1.2 k ohms）× 2

AC 100 V 50/60 Hz [/F]

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

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

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

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

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

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

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

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

RC455SD

SUM-3

）

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

）

トラック 2チャンネル

交流バイアス方式

録音・再生ヘッド×

再生ヘッド×
消去ヘッド×

サーボモーター×

〜

19 kHz ± 3 dB

〜

17 kHz ± 3 dB

改善（

（

50 k ohm）× 2

（

3 k ohm）× 2

5 kHz

以上

16 W

440 mm

124 mm

286 mm

4.0 kg

2

1

1

2

1

1

1

2

）］

）
）

組
本
個
本

Dolby noise reduction and HX Pro headroom extension

manufactured under license from Dolby Laboratories

Licensing Corporation. HX Pro originated by Bang &

Olufsen.

"DOLBY", the double-D

440.0

C EE DECK D4051

EE

DOLY

DOLY

O

O

IE

IE

EC

EC

O

O

PLY

PLY

EV. ODE

EV. ODE

CO PL Y

O/O

O/O

POE

POE

EE

D I PEED

D I PEED

YC EV

YC EV

OP

OP

EEC

EEC

PLY

PLY

CO ECO E

CO ECO E

EE

EE

EC LEVEL

EC LEVEL

HIH

HIH

PEOLEC E

PEOLEC EEC

PLY

PLY

OP

PLY

PLY

OP

I

X

I

X

PHOE

PHOE

EEC

EEC

PICH

PICH

EC/PLY

EC/PLY
CO OL

CO OL

12.0 112.0 10.0 11.0265.0

286.0

(mm)

trademarks of Dolby Laboratories Licensing

Corporation.

本製品のドルビーノイズリダクション及びドルビー
ッドルームエクステンションはドルビーラボラトリーズから
の実施権に基づき製造されています。

ヘッドルームエクステンションはバングアンドオルフ

HX Pro

センの考案です。

、ドルビー、

Dolby

ビーラボラトリーズの商標です。

HX Pro

symbol and "HX PRO" are

HX Pro

およびダブルD記号

ヘ

はドル

1

2. ADJUSTMENT PROCEDURE

2-1 MECHANICAL ADJUSTMENT

2-1-1 Wow and flutter (playback method)

In both FWD and REV play modes, these measurements

should be made at the beginning, middle, and the end of the

tape.

1. Connect a wow-and-flutter meter to the LINE OUT.

2. Load and play a TEAC MTT-111N test tape.

3. Check that readings on the wow-and-flutter meter is

within 0.09 % WRMS ( ± 0.1 % W. PEAK).

2-1-2 Tape speed

1. Connect a frequency counter to the LINE OUT.

2. Load a TEAC MTT-111 N test tape and play in FWD

direction the beginning of the test tape.

3. Adjust each variable resistor to get the following values.

CONTROL PWB

機構部の調整

2-1

ワラ・フラッタ（再生法）

2-1-1

FWD, REV

する。

1. LINEOUT

テストテープ

2.

ワラ・フラッタ値が

3.

（

2-1-2

1. LINEOUT

テストテープ

2.

る。
周波数値が下表の範囲内になるよう、各調整VRを調整す

3.

る。

両方向でテープの巻始め、中間、巻終りを測定

端子にワラ・フラッタメーターを接続する。

MTT-111N

を再生する。

0.09％ WRMS［±0.1％ W･PEAK

）］

以下であることを確認する。

EIAJ

テープスピード

端子に周波数カウンターを接続する。

MTT-111N

の巻始め部を

FWD

方向で再生す

W332 to W333 : Short HIGH speed
W332 to W333 : Open LOW speed

W333
W332

VR2

HI

VR1

LOW

R3 LOW R4 HI

Fig. 2-1

4. In play mode, check that the following values are obtained

at the beginning and end of the tape.

Speed drifting : Within 120 Hz(HIGH speed)

Within 60 Hz(LOW speed)

2-1-3 Reel torque

Load the cassette torque meter on the deck and read the

pointer indication on the dial scale for each tape transport

operation. The measured torque should be within the

following specified values.

Take-up : 30 to 70 g-cm

Supply : 1.5 to 6 g-cm

FF/REV : 70 to 150 g-cm

Torque metier

MTT-8111W : Forward torque & back tension

MTT-8121W : Reverse torque & back tension

MTT-8242 : Fast forward & rewind static torque

Adjustment point

調整個所

PLAYBACK

REC/PLAY

巻始めから巻終わりまで再生し、変動幅を確認する。

4.

変動幅

60 Hz

リールトルク

2-1-3

カセット型トルクメーターによる測定値が下記の範囲内で
あることを確認する。
テイクアップトルク
バックテンショントルク
早送り/巻戻しトルク

トルクメーター

MTT-8111W :
MTT-8121W :
MTT-8242 :

HIGH speed

LOW speed

HIGH speed

LOW speed

: 120 Hz

以内（ハイスピード）

以内（ロースピード）

: 30〜70 g-cm

: 1.5〜6 g-cm

: 70〜150 g-cm

巻取りトルクとバックテンション
巻取りトルクとバックテンション
早送り/巻戻しトルク

Adjustment value

VR2
VR1

R4
R3

調整値

6,000 ±30Hz
3,000 ±20Hz

6,000 ±30Hz
3,000 ±20Hz

(FWD用)
(REV用)

2

2-2 ELECTRICAL ADJUSTMENT

アンプ部の調整

2-2

2-2-1 Precautions

• Before performing adjustments and checks clean and

demagnetize the entire tape parh.

• ln general, adjustments and checks are made in the order

of Lch then Rch. Double REF. Nos. indicate Lch/Rch.

(Example R11/R21)

• 0dB is referenced to 0.775V.

• The AC voltmeter used in the procedures must have an

input impedance of 1 MΩ or more.

• Unless specified otherwise, adjustments and checks are

made in FWD direction.

2-2-2 Adjustment locations

P303

Frequency Counter

L103

L304

TP3

L203

TP4

注意

2-2-1

アンプ部の調整・確認の前に、テープ走行系の消磁と清掃

•

を行なってください。
特に指定のない限り、調整は

•

ださい。尚、

Lch/Rch

• 0dBは0.775V

測定に使用するレベル計の入力インピーダンスは、

•

R11/R21

を示します。

です。

Lch、Rch

のように記されている回路番号は

の順序で行なってく

上のものを使用してください。
特に指定のない場合、調整および確認は

•

方向で行なっ

FWD

てください。

調整

2-2-2

MAIN PWB

R13

R23

L101

W29

1M

Ω以

DC voltmeter

R14 L R24 R

R12 R22

R11 L R21 R

Fig. 2-2

L201

AC voltmeter

W56

3

2-2-3 Playback performance

再生系

Deck settings :

Mode : PLAY

DOLBY NR Switch : OFF

ITEM

項 目

SETTING

Connection : Fig. 2-4

1. Head
azimuth
adjustment

アジマス調整

2. DOLBY level

ドルビー
レベル

Check and adjust in
FWD, REV
respectively

、

FWD

調整・確認

Connection : Fig. 2-2
FWD, PLAY

設 定

REV

それぞれ

INPUT SIGNAL

入力信号

MTT-150C Check

MTT-25702
(12.5 kHz)

MTT-150C

TEAC test tapes :

MTT-150C : For Dolby lavel calibration

MTT-25702 : For playback frequency response check

NORMAL tape

MTT-5513 : For S/N check NORMAL tape

ADJUSTMENTS

調整個所

MEASURING

POINTS, RESULT

測定個所・調整値

REMARKS

備考

LINE OUT :

Phase : within 45

位相

: 45

°以内

°

(Fig. 2-5)

LINE OUT:

Azimuth screws

アジマス調整
ねじ

R11 / R21

R12 / R22

Maximum output
level at L & R -ch
Lch, Rch

出力最大

TP1(W29) / TP2(W56) :

- 6 dB

とも

FWD
azimuth
REV
azimuth

PLAYBACK(DECK I)

REC/PLAY(DECK II)

3. Playback
output level

再生出力
レベル

4. Meter level

メーター
レベル

5.PHONES
output level
PHONES

出力レベル

6. Playback
frequency
response

再生周波数
特性

7. Playback
S/N ratio

再生

S/N

比

Connection : Fig. 2-3
FWD/REV PLAY

MTT-150C Check

MTT-150C Check

MTT-150C Check

Connection : Fig. 2-3 MTT-25702 Check

MTT-5513
Playback the

Connection : Fig. 2-3

leader tape
portion

リーダーテープ
部を再生

Check 46 dB min.

LINE OUT :

- 4.5 ± 1 dB

LEVEL METER :

mark ± 1dot

PHONES :

±

- 19

3 dB

   1k       

250

Ref. output level

基準出力レベル

8 Ω load

8

Ω 負荷

+ 4 dB

- 4 dB

12.5k (Hz)

Ratio of ref.
level to noise

基準出力レベルと
ノイズの比

4

2-2-4 Recording performance

録音系

Deck settings :

Mode : REC/PLAY

DOLBY NR Switch : OFF

REC LEVEL Control : Specified position (ltem8)

ITEM

項 目

SETTING

設 定

INPUT SIGNAL

入力信号

8. Specified
LINE input
level

ライン規定
入力レベル

9. Bias osc
frequency

バイアス発振
周波数

10. Step up

coil

ステップ
アップコイル

11. Record

bias

録音バイアス

12. MPX filter

MPX

フィルター

13. Record

level

録音レベル

14. Total

harmonic
distortion

総合歪率

15. Overall

frequency
response

録再周波数
特性

16. Overall S/N

ratio

総合

S/N

Connection : Fig. 2-3

Mode : REC

Connection : Fig. 2-2

TAPE : MTT-5513

Mode : REC

Connection : Fig. 2-2

TAPE : MTT-5563

Mode : REC

Connection:Fig. 2-3

TAPE : MTT-5513

Connection : Fig. 2-3

Mode : REC

Connection : Fig. 2-3

TAPE : MTT-5513

TAPE : MTT-5563

Connection : Fig. 2-3

TAPE : MTT-5513

MTT-5563

Connection : Fig. 2-3

TAPE : MTT-5513

MTT-5563

Connection : Fig. 2-3

TAPE : MTT-5513

MTT-5563

比

LINE IN :
400 Hz / - 9 dB

LINE IN :
No signal

無信号

LINE IN :
No signal

無信号

LINE IN :

250 Hz / 10 kHz

- 42 dB

LINE IN :

19 kHz / - 12 dB

LINE IN :

400 Hz / - 12 dB

LINE IN :

400 Hz / - 12 dB

LINE IN :

40 Hz ~ 12.5 kHz

- 42 dB

LINE IN :
No signal

無信号

TEAC recording test tapes:

MTT-5513 : For NORMAL

MTT-5563 : For HIGH position

ADJUSTMENTS

調整個所

REC LEVEL

L301

MEASURING

POINTS, RESULT

測定個所・調整値

LINE OUT :

- 4.5 dB

P303 Pin 2 :

100 kHz

TP3 / TP4 :

L103 / L203

R14 / R24

L101 / L201 30 dB min.

R13/R23

Check

Check

Check

Min. DC voltage

電圧最小

DC

LINE OUT :

Nearly equal level

at both frequencies

両周波数の録再出力
が同レベル
（± 0.5 dB)

LINE OUT:

- 7.5 ± 1 dB

LINE OUT:

- 7.5 ± 1 dB

NORMAL : 2.0 % or less

HIGH pos. : 2.5 % or less

METAL : 3.0 % or less

40 250 12.5k (Hz)

NORMAL : 45 dB min.

Check

HIGH pos.

METAL : 46 dB min.

: 46 dB min.

REMARKS

備考

After adjusting,
do not move
(Specific position)

調整後は動かさない
こと（規定位置）

Ratio of ref.
level to signal

基準出力レベル
に対する比

+ 6 dB

- 6 dB

Ratio of ref.
level to noise

基準出力レベル
とノイズの比

5

ITEM

項 目

17. Erase
efficiency

消去率

18. REC MUTE

function
REC MUTE

効果

19. Channel

separation

チャンネル
セパレーショ
ン

20. Adjacent

track
crosstalk

トラック間
クロストーク

SETTING

設 定

Connection : Fig. 2-3
TAPE: MTT-5563
1kHz B.P.F in

Connection : Fig. 2-3
TAPE: MTT-5563
1kHz B.P.F in

Connection : Fig. 2-3
TAPE : MTT-5563
1kHz B.P.F in

Connection : Fig. 2-3
TAPE : MTT-5563

INPUT SIGNAL

入力信号

LINE IN :
1 kHz / + 1 dB

LINE IN :
1 kHz / + 1 dB

LINE IN :
Lch 1 kHz /

- 9 dB
Rch No signal

無信号

LINE IN :
Lch No signal

無信号

Rch 125Hz /

- 9 dB

ADJUSTMENTS

調整個所

MEASURING

POINTS, RESULT

測定個所・調整値

Check 65 dB min.

Check 55 dB min.

Check 35 dB min.

Check 40 dB min.

REMARKS

備考

Ratio of the 1 kHz
recorded portion to
the erased portion.

未消去部分と
消去部分の比

Ratio of the 1 kHz
recorded portion to
the "REC MUTE"
portion.

録音部分と

MUTE"

REC

部分の比

Ratio of Lch (1kHz)
to Rch(no signal).
Lch(lkHz)

信号

の比

)

と

Rch(

無

Invert tape and
play Rch track.
Check leakage
level against the
output reference of
previously recorded
portion.

テープを反転して再
生した時の
レベルの比

Rch

出力

Oscillater

CASSETTEDECK SD4051

DOLBYNR

DOLBYNR

B

B

OFF

OFF

TIMER

TIMER

REC

REC

OFF

OFF

PLAY

PLAY

REV.MODE

REV.MODE

AUTOREVERSE

AUTOREVERSE

AUTOTAPESELECT/HIGHSPEED DUBBING

AUTOTAPESELECT/HIGHSPEED DUBBING

CONTPLAY

ON/OFF

ON/OFF

POWER

POWER

LINE IN

SD4051

RESET

RESET

DUBBINGSPEED

DUBBINGSPEED
NORMAL

SYNCREV

NORMAL

SYNCREV

PLAY

STOP

PLAY

STOP

EJECT

EJECT

PLAY

PLAY

A

A

Distortion Analyzer

SD4051

CASSETTEDECK SD4051

RESET

AUTOREVERSE

AUTOREVERSE

AUTOTAPESELECT/HIGHSPEED DUBBING

AUTOTAPESELECT/HIGHSPEED DUBBING

RESET

DUBBINGSPEED

DUBBINGSPEED

NORMAL

SYNCREV

NORMAL

SYNCREV

PLAY

STOP

PLAY

STOP

EJECT

EJECT

PLAY

PLAY

A

A

DOLBYNR

DOLBYNR

B

B

L

OFF

OFF

TIMER

TIMER

REC

REC

OFF

OFF

PLAY

PLAY

REV.MODE

REV.MODE

CONTPLAY

ON/OFF

ON/OFF

POWER

POWER

R

COUNTERCOUNTER

COUNTERCOUNTER
RESET

RESET

RECLEVEL

RECLEVEL

HIGH

HIGH

PAUSE

RECMUTE

PAUSE

RECMUTEREC

AUTOREVERSE

AUTOREVERSE

PLAY

STOP

PLAY

STOP

AUTOTAPESELECT/HIGHSPEED DUBBING

MIN

MAX

MIN

MAX

PITCH

PITCH
CONTROL

CONTROL

AUTOTAPESELECT/HIGHSPEED DUBBING

PHONES

PHONES

EJECT

EJECT

REC/PLAY

REC/PLAY

B

B

+

+Ð

S1

L

R

LINE OUT

1 kHz Filter

S2

Oscilloscope

AC voltmeter

Fig. 2-3

Oscilloscope

VER

COUNTERCOUNTER

COUNTERCOUNTER

RESET

RESET

RECLEVEL

RECLEVEL

HIGH

HIGH

PAUSE

RECMUTE

PAUSE

RECMUTEREC

AUTOREVERSE

AUTOREVERSE

PLAY

STOP

PLAY

STOP

AUTOTAPESELECT/HIGHSPEED DUBBING

MIN

MAX

MIN

MAX

PITCH

PITCH
CONTROL

CONTROL

AUTOTAPESELECT/HIGHSPEED DUBBING

PHONES

PHONES

EJECT

EJECT

REC/PLAY

REC/PLAY

B

B

+

+Ð

L

R

LINE OUT

Fig. 2-4

HOR

S

AC voltmeter

0°(in phase) 45° 90° 135° 180°(out of phase)

同位相

(

)(

逆位相

)

Fig. 2-5

6

3. WIRING DIAGRAM

DECK I (A)

PLAY HEAD

L

PLAY HEAD

R

6A : HEAD + PWB

DECK II (B)

R/P HEAD

L

R/P HEAD

R

E HEAD

6B : HEAD + PWB

PHONE PWB

PWB

PWB

PWB

P307

MAIN PWB

P301 470

1

1

2

2

3

3

1

1

2

2

3

3

4

4

5

5

6

6

J306

1

2

3

3

2

1

P308

P302

5

4

3

2

1

P309

P303

2

1

P306

1

1

2

2

3

3

P305

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

11

11

12

12

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

9

9

1

1

2

2

3

3

4

4

5

5

6

6

3

3

2

2

1

1

J307

1

2

3

4

5

6

7

8

9

10

11

12

J308

1

2

3

4

5

6

7

8

9

J311

1

2

3

4

5

6

J401

5

4

3

2

1

VR PWB

CONTROL PWB

J503

1

2

3

1

2

3

1

2

1

2

3

1

2

P503

P318

J319

10

J320

10

11

12

13

P504

1

2

3

4

5

6

7

8

9

1

2

3

4

5

6

7

8

9

1

1

2

2

MECH I (A)

1

2

3

4

5

6

7

8

9

10

MECH II (B)

1

2

3

4

5

6

7

8

9

10

11

12

13

J504

1

2

470

+-AB

PLAY

SOL

CrO2

TAPE

+-AB

PLAY

SOL

CrO2

TAPE

F.REC

METAL

R.REC

P304

J304

123

123

123

SLIDE PWB

J501

P501

1

2

3

4

5

6

1

2

3

4

5

6

TRANSF. B PWB REMOTE PWB

32

KEY PWB

7 8

4. BLOCK DIAGRAM

PB AMP

DECK I (A)

METER AMP

PLAY HEAD

DECK II (B)

R/P HEAD

REC

PLAY

FL DISPLAY

PB EQ

HI SPEED

CPSPB AMP

DOLBY NR B

OUTPUT

PHONES AMP

PB EQ

PHONES

REC AMP

E HEAD

HX PRO

REC EQ

BIAS
OSC

INPUT

+V

BIAS ADJ.

-V

109

5. SCHEMATIC DIAGRAM

DECK I (A)

PLAY HEAD

L

R

6A:PHEAD+PWB

R

2

1

PLAY HEAD

2

1

PWB

PWB

DECK II (B)

R/P HEAD

R/P HEAD

2

1

2

1

2

1

PWB

L

E HEAD

6B : R/P, E HEAD + PWB

1

1

2

2

3

3

1

1

2

2

3

3

4

4

5

5

6

6

1

P303
2P

MAIN PWB -1/3

1

2

3

P301

3P

P302
5P

5

4

3

2

1

2

REC AMP R II

REC AMP L II

(MAIN -2/3)

PB AMPII_GND

U101

DTC124ES

Q102
2SC1815GR

12

12

3

C101
330P

C201
330P

3

U201

DTC124ES

3

R109

Q202

2SC1815GR

3

R209

1K

1K

1

2

C202
330P

2

1

C102
330P

R102

56K

C107
1000P

C207

1000P

R105
1M

C103

0.027u

R103 120K

2

3

5

6

UPC4570C

R203 120K

R202
56K

220u10V

R205

1M

R206

R113

1M

R110
56K

U303B

UPC4570C

R210
56K

R213

1M

C104
220u10V

4

8

U301B

R204

4.7K

C203

0.027u

C204

R106 56

R104

4.7K

1

U301A
UPC4570C

7

BU4066BC

56

R114

C109
220u10V

C108

R111

120K

2

3

5

6

R211

C209

220u 10V

R214

U302

C205

2.2u50V

R208

2.2K

0.027u

48

120K

R212

4.7K

C208

0.027u

R107

6.8K

C105

2.2u50V

7

8

R207

6.8K

56

R112

4.7K

C110

2.2u50V

1

U303A

UPC4570C

7

56

C206

0.001u

R115

6.8K

R215

6.8K

C210

2.2u50V

R216

2.2K

C106

0.001u

R108

2.2K

R21
10K(B)

R120

10K

C116

10u
16V

C216

10u
16V

R220
10K

3

C340

220u10V

R302

18K

R121

10K

C117

10u
16V

C217

10u
16V

R362

5.6K

1

R363 5.6K

R221

10K

R119

R11

10K(B)

1

2

L101
MPX

10u16V

1

U311A

NJM4558D

7

L201.
MPX

DOLBY IN R

DOLBYINL

2

U332

DTA124ES

2

R/P H. II

36

C114

R118

2.7K

C214

10u25V

36

1

2

(MAIN -3/3)

DTA124ES

3

U335

3

DTA124ES

R117

47K

C113

10u16V

1

C213

14

C111

0.001u

10K(B)

R12

R116

2.2K

7

R22
10K(B)

C211

0.001u

1

148

U304B

BU4066BC

10u16V

R217

47K

48

2

3

5

6

U311B

NJM4558D

R306 47K

R307 47K

R308 47K

R309 47K

R371 330

6.2K

C115

10u16V

R118

2.7K

C215

10u16V

R219

6.2K

C310

100u16V

U328

R303

4.7K

U329

DTA124ES

U330

DTA124ES

DTA124ES

1

2

1

C311
100u16V

1 2345678

2

2

2

U325
DTC124ES

1

3

1

3

1

3

U331

2

1

3

R122

10K

C118
10u16V

C312

0.22u

910111213141516

C218

C313

0.22u

R222
10K

R310

47K

2

U322
DTC124ES

1

U327

DTA124ES

U324

DTC124ES

REC AMP L

R148

1K

U305
HA12134AF

R248

1K

10u
16V

REC AMP R

(MAIN -2/3)

3

3

2

3

1

2

G4

G1

R149

C139

10u16V

C239

10u16V

R249

1

47K

47K

U321
DTC124ES

2

G3

R150
33K

C140 100P

R151

2

3

8

U315B
NJM4558D

5

6

R251

C240

R250
33K

1

3

U336
DTA124ES

1

G5

CrO2 2

27K

4

1

U315A
NJM4558D

7

27K

100P

U337

DTA124ES

1

3

2

1

C141

10u16V

C241
10u16V

R367

22K

3

2

3

U338

DTC124ES

C303
22u16V

R387 22K

PLAY OUT L

(MAIN -3/3)

PLAY OUT R

(MAIN -3/3)

DOLBY_GND

R368
22K

CrO2 I

2

Q6

R388
100K

-7V

+7V

+5V

D304
1SS133T

D305

1SS133T

H.DUB

G1

G3

G4

G5

G6

METER R

METER L

CPS

G7

P304

3P

-7V

DOLBY NR

GND

CrO2 I

PLAY MUTE

REC MUTE II
CrO2 II

PLAY I

R/P H. II

R/P NR

PLAU M.

REC M. II

PLAY II

P307

12P

1

2

3

SLID PWB

1

2

3

4

5

6

7

8

CONTROL PWB

9

10

11

12

MAIN PWB -2/3

11 12