Sony SLV-ED8KR, SLV-ED9KR, RMT-V246, RMT-V244 Service Manual

SLV-ED8KR/ED9KR

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SERVICE MANUAL

TEL [phone] QQ 376315150 892498299

Photo: SLV-ED8KR

• Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENTS VI for MECHANICAL ADJUSTMENTS.
(9-921-647-11)

* The abbreviations of ED8 and ED9 contained in this service manual are indi-

cated when these models are common to all their corresponding models as
given below.

Abbreviated
model name

ED8

ED9

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RMT-V244/V246

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Korean Model

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S MECHANISM

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All model

names

SLV-

13942296513

ED8KR

ED9KR

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SPECIFICATIONS

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VIDEO CASSETTE RECORDER

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1. Check the area of your repair for unsoldered or poorly-sol­dered connections. Check the entire board surface for solder
splashes and bridges.

2. Check the interboard wiring to ensure that no wires are
“pinched” or contact high-wattage resistors.

3. Look for unauthorized replacement parts, particularly transis­tors, that were installed during a previous repair. Point them
out to the customer and recommend their replacement.

13942296513

SAFETY CHECK-OUT

After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:

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4. Look for parts which, though functioning, show obvious signs
of deterioration. Point them out to the customer and recom­mend their replacement.

5. Check the B+ voltage to see it is at the values specified.

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SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

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TABLE OF CONTENTS

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Section Title Page Section Title Page

SERVICE NOTE...................................................................... 4

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5. INTERFACE, IC PIN FUNCTION DESCRIPTION

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1. GENERAL

Getting Started .............................................................. 1-1

Basic Operations ........................................................... 1-5

Additional Operations.................................................... 1-8

Editing............................................................................ 1-11

Additional Information ................................................... 1-12

2. DISASSEMBLY

TEL [phone] QQ 376315150 892498299

2-1. Upper Case Removal.................................................... 2-1

2-2. RJ-79, NK-11 Board Removal....................................... 2-1

2-3. Rear Panel Removal ..................................................... 2-1

2-4. Front Panel Section Removal ....................................... 2-1

2-5. FR-137, DM-77, SW-307, IO-64 Board

Removal (ED9).............................................................. 2-2

2-6. Control Switch Block Removal (ED9) ........................... 2-2

2-7. FR-137, DM-77, IO-64 Board Removal (ED8) ............. 2-2

2-8. Mechanism Deck Removal ........................................... 2-2

2-9. Power Block Removal ................................................... 2-3

2-10. PS-414, MA-325 board Removal .................................. 2-3

2-11. Internal Views................................................................ 2-4

2-12. Circuit Boards Location ................................................. 2-5

3. BLOCK DIAGRAMS

3-1. Overall Block Diagram .................................................. 3-1

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3-2. Video1 Block Diagram ................................................... 3-4

3-3. Video2 Block Diagram ................................................... 3-5

3-4. Servo/System control Block Diagram ........................... 3-7

3-5. Audio Block Diagram..................................................... 3-9

3-6. Tuner Block Diagram ..................................................... 3-11

3-7. Mode Control Block Diagram ........................................ 3-13

3-8. Power Block Diagram.................................................... 3-15

4. PRINTED WIRING BOARDS AND

SCHEMATIC DIAGRAMS

4-1. Frame Schematic Diagram ........................................... 4-3

4-2. Printed Wiring Boards and Schematic Diagrams ......... 4-5

MA-325 (Head Amp) Schematic Diagram .................... 4-5

MA-325 Printed Wiring Board ....................................... 4-9

MA-325 (Video, Audio) Schematic Diagram................. 4-11

MA-325 (System Control) Schematic Diagram ............ 4-15

MA-325 (Servo Control) Schematic Diagram ............... 4-17

MA-325 (Bias, CTL) Schematic Diagram ..................... 4-19

MA-325 (Hi-Fi Audio) Schematic Diagram .................... 4-21

MA-325 (OSD) Schematic Diagram.............................. 4-23

MA-325 (IO) , RJ-79 Schematic Diagrams and

RJ-79 Printed Wiring Board .......................................... 4-25

MA-325 (Tuner) Schematic Diagram ............................ 4-27

NK-11 Printed Wiring Board and

Schematic Diagram ....................................................... 4-29

DM-77, IO-64 Printed Wiring Boards and

Schematic Diagrams ..................................................... 4-31

FR-137, SW-307 Printed Wiring Boards....................... 4-33

FR-137, SW-307 Schematic Diagram .......................... 4-35

PS-414 Printed Wiring Board........................................ 4-37

PS-414 Schematic Diagram.......................................... 4-39

SR-718 Printed Wiring Board ....................................... 4-41

SR-718 Schematic Diagram ......................................... 4-43

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5-1. System Control-Video Block Interface
5-2. System Control-Servo Peripheral Circuit Interface
5-3. System Control-Mechanism Block Interface
5-4. System Control-System Control Peripheral Circuit
5-5. System Control-Hi-Fi Audio Block Interface
5-6. Servo/System Control Microprocessor Pin Function
5-7. Timer/Tuner Control Microprocessor Pin Function
5-8. KOREAN Processor Pin Function

6. ERROR CODE.......................................................... 6-1

7. ADJUSTMENTS

7-1. Mechanical Adjustments ............................................... 7-1

7-2. Adjustments................................................................... 7-1

2-1. EEP ROM Initial Data Input .......................................... 7-1

7-3. Electrical Adjustments................................................... 7-1

3-1. Pre-Adjustment Preparations........................................ 7-1

3-1-1. Instruments to be Used............................................ 7-1

3-1-2. Connection ............................................................... 7-1

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3-1-3. Set-up of Adjustment ............................................... 7-2

3-1-4. Alignment T apes....................................................... 7-2

3-1-5. Specified I/O Level and Impedance

3-1-6. Adjusting Sequence ................................................. 7-2

3-2. Power Supply Adjustment ............................................. 7-2

3-2-1. Power Supply Check................................................ 7-2

3-2-2. +6 V Adjustment ....................................................... 7-2

3-3. Servo System Adjustment............................................. 7-3

3-3-1. RF Switching Position Adjustment........................... 7-3

3-4. Audio System Adjustments ........................................... 7-3

3-4-1. Hi-Fi Audio System Adjustment ............................... 7-3

1. AF Switching Position Adjustment........................... 7-3

2. Frequency Response Check.................................... 7-4

3. Overall Level Characteristic and

4. Overall S/N Check.................................................... 7-4

3-4-2. Normal Audio System Adjustment ........................... 7-5

1. ACE Head Adjustment ............................................. 7-5

2. E-E Output Level Check........................................... 7-5

3. Frequency Responce Check.................................... 7-5

4. Overall Level Characteristic and Distortion

5. Overall S/N Check.................................................... 7-5

3-5. Video System Adjustment ............................................. 7-5

3-5-1. VCO Oscillation Frequency Adjustment .................. 7-5

3-6. Parts Arrangement Diagram for Adjustments............... 7-6

8. REPAIR PARTS LIST

8-1. Exploded Views ............................................................. 8-1

8-1-1. Front Panel and Cabinet Assemblies (ED8)............ 8-1

8-1-2. Front Panel and Cabinet Assemblies (ED9)............ 8-2

8-1-3. Chassis Assembly .................................................... 8-3

8-1-4. Mechanism Chassis Assembly (1)........................... 8-4

8-1-5. Mechanism Chassis Assembly (2)........................... 8-5

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8-1-6. Mechanism Chassis Assembly (3)........................... 8-6

8-2. Electrical Parts List........................................................ 8-7

(MA-325 board IC161) .................................................. 5-1

(MA-325 board IC161) .................................................. 5-1

(MA-325 board IC161) .................................................. 5-2

Interface (MA-325 board IC161) ................................... 5-3

(MA-325 board IC161) .................................................. 5-3

(MA-325 board IC161) .................................................. 5-4

(FR-137 board IC301) ................................................... 5-5

(NK-11 board IC1) ......................................................... 5-6

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Input/Output T erminal............................................... 7-2

Distortion Factor Check ........................................... 7-4

Factor Check ............................................................ 7-5

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SERVICE NOTE

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1. DISASSEMBLY

• This set can be disassembled in the order shown below.

Note: Pages in indicated pages in the SERVICE MANUAL.

Pages in indicated pages in the VHS MECHANICAL ADJUSTMENT MANUAL VI.

Set

Upper case
(Page 2-1)

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Front Panel

Section

(Page 2-1)

FR-137 Board

(Page 2-2)

IO-64 Board

(Page 2-2)

TEL

Control Switch

Block (ED9)

(Page 2-2)

RJ-79 Board

(Page 2-1)

DM-77 Board

(Page 2-2)

SW-307 Board

(ED9)

(Page 2-2)

NK-11 Board

(Page 2-1)

FL complete

Ass’y

(Page 13)

Retainer

Plate

(Page 22)

13942296513

FL Slider

Block Ass’y

(Page 22)

Cam Gear

(Page 23)

Cam Motor

Retainer

(Page 31)

Pinch Press

Block Ass’y

(Page 14)

Mechanism

Deck

(Page 2-2)

Rubber

Belt

(Page 15)

Pully Gear

Ass’y

(Page 29)

Reel Direct

Ass’y

(Page 30)

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Rear Panel

(Page 2-1)

Rubber

Belt

(Page 15)

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Capstan

Motor

(Page 15)

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MA-325 Board

Power

Block

(Page 2-3)

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Rotary
Switch

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Ass’y

(Page 13)

Drum Ass’y

(Page 13)

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PS-414 Board

(Page 2-3)

Tuner

Unit

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Rubber

Belt

(Page 15)

Slider

(Page 26)

Loading

Gear (T, S)

(Page 28)

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Cam Motor

(Page 31)

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SECTION 1

GENERAL

SLV-ED8/ED9

This section is extracted from SLV -ED8KR
instruction manual (3-861-812-11).

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SECTION 2

DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

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2-1. UPPER CASE REMOVAL 2-3. REAR PANEL REMOVAL

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SLV-ED8/ED9

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3 Upper case

1 Two tapping screws

2 Connector

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2 Two tapping screws

(CN361)

8 Rear panel

7 Claw

3 Harness

6 Claw

1 Two connectors

(CN101, 901)

4 Three claws

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5 Two claws

TEL

13942296513

2-2. RJ-79, NK-11 BOARD REMOVAL

1 Two connectors

3 RJ-79 board

5 NK-11 board

4 Connector

(CN751)

(CN951, 952)

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2 Four screws

(BVTP3 × 12)

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2-4. FRONT PANEL SECTION REMOVAL

1 Connector

(CN423)

2 Flat cable

(CN105)

3 Two claws

4 Claw

6 Front panel section

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2-5. FR-137, DM-77, SW-307, IO-64 BOARD

REMOVAL (ED9)

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!¡ SW-307 board

0 Two screws

5 Flat cable

(CN308)

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4 FR-137 board

(B2.6 × 8)

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3 Four screws

!™ IO-64

board

6 Flexible board

9 Flexible board

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(B2.6 × 8)

1 Flat cable

(CN302)

(CN451)

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2 Screw

(CN309)

8 DM-77 board

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7 Four screws

(B2.6 × 8)

(B2.6 × 8)

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2-7. FR-137, DM-77, IO-64 BOARD

0

REMOVAL (ED8)

7 Screw

(B2.6 × 8)

8 IO-64 board

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3 FR-137 board

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6 DM-77 board

5 Connector

(CN307)

4 Flexible board

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(CN451)

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1 Nine screws

(B2.6 × 8)

2 Four screws

(B2.6 × 8)

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2-6. CONTROL SWITCH BLOCK REMOVAL

(ED9)

5 Control switch block

13942296513

1 Two screws

2 Damper holder

(B2.6 × 8)

4 Fulcrum plate

3 Screw

(B2.6 × 8)

(right) assembly

2-8. MECHANISM DECK REMOVAL

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6 Two screws

7 Mechanism deck

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2 Connector

3 Connector

(FE head)

(BVTP3 × 12)

4 Screw

(B3)

Note: When mounting the mechanism deck,

first align ¢ mark on the rotary switch.

(ACE head)

5 Screw

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(BVTP3 × 12)

1 Flexible board

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2-9. POWER BLOCK REMOVAL

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(B3)

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2-10. PS-414, MA-325 BOARD REMOVAL

5 Three screws

(B3)

6 MA-325 board

4 Screw

1 Connector

(CN162)

2 Three screws

(B3)

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.

xia

3 PS-414 board

o

y

u

1

6

3

2-3

.

c

o

m

2-11. INTERNAL VIEWS

7

Q

Q

3

6

1

5

1

3

Drum assembly (M901) (DZH-94A/ZRP)
8-839-044-02

5

0

8

9

2

4

9

8

2

9

9

FE head
1-500-144-11

TEL [phone] QQ 376315150 892498299

Q100
Tape end sensor
8-729-043-84

D102
Tape top/end LED

TEL

M902
Capstan motor
1-698-971-11

13942296513

8-719-048-26

Q

7

3

Q

Drum assembly (M901) (DZH-94A/ZRP)
8-839-044-02

6

3

1

5

1

5

Q101
Tape top sensor
8-729-043-84

9

8

0

2

4

9

8

2

9

TEL [phone] QQ 376315150 892498299

9

w

w

w

M903

.

xia

Cam motor assembly
X-3947-577-1

o

y

u

1

6

3

.

2-4

c

o

m

Q

2-12. CIRCUIT BOARDS LOCATION

Q

7

3

MA-325

(

6

VIDEO, AUDIO, I/O,
SERVO/SYSTEM CONTROL, TUNER

3

1

5

1

5

0

)

8

RJ-79
(ADDITIONAL REAR OUT)

9

2

4

9

8

2

9

9

NK-11
(KOREAN STEREO)

SW-307 (ED9)
(POWER SWITCH)

TEL [phone] QQ 376315150 892498299

IO-64
(FRONT IN)

TEL

13942296513

FR-137

FL DRIVE,

(

MODE CONTROL

Q

Q

7

3

)

DM-77
(MODE CONTROL)

6

3

1

5

POWER BLOCK
(SR-718)
(SWITCHING REGULATOR)

PS414

8

9

4

2

9

8

0

5

1

(POWER SUPPLY)

2

9

TEL [phone] QQ 376315150 892498299

9

w

w

w

.

xia

o

y

u

1

6

3

2-52-5 E

.

c

o

m

SECTION 3

BLOCK DIAGRAMS

3-1. OVERALL BLOCK DIAGRAM

IC501

VIDEO

REC/PB

AMP

IC340

AUDIO

REC/PB

AMP

SWITCH

BUFFER

IC901

7

REC RF, PB RF, CROT
COMP SYNC
RF ENV, RF SWP

SCK, SO

AF RECP, AF RFC, FULL ERASE
AF SWP
AFM REC, PB AFM

NA HEAD PB

NA REC

BIAS VCC

L1 IN L
L1 IN R

3

9

6

IC201

(1/2)

AUDIO

PROCESSOR

(MONO)

4

2

NORMAL AU
NA HF OUT
A MUTE
FULL ERASE

2

3

9

Q

SP CH1

SP CH2

EP CH1

EP CH2

CH1

CH2

Q

VIDEO

HEAD

Hi-Fi

AUDIO HEAD

3

MA-325 BOARD

(SEE PAGE 4-5~4-28)

TEL [phone] QQ 376315150 892498299

MONO

AUDIO HEAD

AUDIO

ERASE HEAD

FULL

ERASE HEAD

T

E

LINE 1 IN

VIDEO
AUDIO L
AUDIO R

LINE 2 IN

VIDEO
AUDIO L
AUDIO R

L

CNJ901

CNJ480

IC071

T081

T091

L1 IN V
L1 IN L
L1 IN R

L2 IN V
L2 IN L
L2 IN R

BIAS
OSC

BIAS
OSC

1

IO-64 BOARD

(SEE PAGE 4-32)

1

6

PROCESSOR

5

IC201

Y/C

PROCESSOR

1

5

(2/2)

IC360

AUDIO
(Hi-Fi)

3

VIDEO OUT

IC202

CCD
TV VIDEO
QVD

IIC CLK, IIC DATA

LINE OUT L, LINE OUT R
MOD A

TUNER L
TUNER R

1

IC401

OSD

5

OSD V

CGV, HDET,
CG CS

SCK, SI

Q401

BUFFER

0

LINE OUT L

LINE OUT R

Q

Q

Q901

BUFFER

RJ-79 BOARD

(SEE PAGE 4-25)

Q751-Q753

CNJ901

3

CNJ953

MUTE

TA MUTE

7

LINE-1 OUT

VIDEO
AUDIO L
AUDIO R

LINE-2 OUT
AUDIO L

AUDIO R

6

8

3

TU701

VHF/UHF

IN

OUT

MOD V

1

9

TUNER/MODURATOR

VIDEO

5

L OUT, R OUT

NK-11 BOARD

(SEE PAGE 4-29)

2

S701

SIF

MOD A

AF RECP, AF RFC, FULL ERASE

IC 1

5

1

KOREAN
STEREO

4

RF UNIT

SDA0,SCL0

PLL DATA,
PLL CLK,
PL ENABLE,
AFT, SAP,
FMONO

IIC CLK, IIC DATA

COMP SYNC

RF ENV, RF SWP

0

QVD

SCK, SO

AF SWP
A MUTE

8

TV/VTR

9

9

IC161

SERVO/SYSTEM

CONTROL

2

8

D FG

D PG

DRM DA

CAP FG

CAP DA
CAP STOP
CAP RVS, CAP TRQ PWM

CAM

MODE1-4

T/S LED

T SENS

9

4

S SENS

2

CAM MOTOR

DRIVER

ROTARY
SWITCH

DRIVER

8

IC101

IC101

IC130

S100

Q111

LED

AMP

AMP

2

T SENS

S SENS

(2/2)

Q101

Q101

(1/2)

SLV-ED8/ED9

9

DRUM MOTOR

D VS

CAPSTAN MOTOR

CAP VS

D102

9

9

9

M901

DRUM FG

DRUM PG

M

M902

CAP FG

M

M903

CAM MOTOR

M

TEL [phone] QQ 376315150 892498299

AC
110~240V

w

POWER

BLOCK

SR-718

w

35V
13V

6V

–13V

w

GND

PS-414 BOARD

(SEE PAGE 4-39)

Q600

SWITCH

Q601

SWITCH

IC600

12V
REC

Q603

SWITCH

Q602

SWITCH

.

POWER CONT

x

UN30V
UN13V

MTR12V

SW12V

SW5V

D6V

–13V

GND

FR-137 BOARD

(SEE PAGE 4-35)

ED9

6

ED8

POWER

IC304

FUNCTION

SWITCH

Q300

LED

DRIVER

REMOTE

CONTROL

RECEIVER

FUNCTION

SWITCH

3

FUNCTION

SWITCH

POWER

Q400

LED

DRIVER

IC400

REMOTE
CONTROL
RECEIVER

SW-307 BOARD

(SEE PAGE 4-35)

OPERATING

SWITCH BLOCK

JOG

LED

DRIVER

CLIK

SHUTTLE

–F
+F

i

a

o

y

FUNCTION

SWITCH

DM-77 BOARD

u

(SEE PAGE 4-32)

1

TA MUTE

HDET, CGV, CG CS

SCK, SI, SO

A/D2

POWER CONT

SIRCS IN

A/D6, 7

LED CS

A/D0, 1

DMS1, 2

.

IC301

TIMER/TUNER/

MODE

CONTROL

c

SDA0, SCL0

IC303

WC

EEP

ROM

PLL DATA, PLL CLK,
PLL ENABLE,AFT

ASURA CS, ASURA RESET

POWER
FAIL

RESET

BUZZER

G1-G3
SEG1-6

IC302

RESET PULS
GENERATOR

BZ201

ND320

FLUORESCENT

INDICATOR

TUBE

o

T REEL FG

S REEL FG

REC PRE

PB CTL, REC CTL

CTL RESET

CTL HYS HIGH

m

PH100
T REEL

SENS

PH101
S REEL

SENS

S101

REC PRE

IC001, IC021

CTL AMP

Q001

GAIN

SWITCH

CTL HEAD

05

3-1 3-2

3

7

9

4

6

2

2

3

9

Q

TEL [phone] QQ 376315150 892498299

Q

T

E

L

3

1

1

6

5

1

5

3

1

SLV-ED8/ED9

3-2. VIDEO1 BLOCK DIAGRAM

5

0

SP

CH1

SP

CH2

EP

CH2

EP

CH1

Q

Q

IC5014 REC

3.4Vp-p (H)

VIDEO

HEAD

CHECK

3
4

7
8

1
2

5
6

1
2
3

MA-325 BOARD (1/5)

(SEE PAGE 4-5)

CN502

SP CH1 F
SP CH1 S

SP CH2 F
SP CH2 S

EP CH2 F
EP CH2 S

EP
CH1 F

EP
CH1 S

7

3

CN501

REC CURR
REC RF
REC SWP

6

8

3
2

SW7

5
6

SW8

11
10

SW10

13
14

SW9

3

4

12

1

SW1

SW2

SW3

SW4

SW6

SW5

REC

9

VIDEO REC/PB AMP

PB

PB

PB

PB

5

REC

1

IC501

30

2

5

REC
ADJ

REC
IDEL

0

4

VCA

DET

8

22

HPF

9

9

IC501@™ PB

640mVp-p (H)

Q501

PB RF

BUFF

C ROT

COMP SYNC

2

ENV
DET

SCK1 (SSB)

SO1 (SSB)

RF SWP

8

IC501 @• REC

88mVp-p (H)

28

21
18

9

4

26

20
19
17

2

IC501 !• REC/PB

8

IC501 !¶ REC/PB

9

IC501 @¡ REC/PB

4.6Vp-p (2V)

PB RF

REC RF

C ROT
COMP SYNC

9

2

2.5Vp-p (H)

PB ENV
SCK1 (SSB)

SO1 (SSB)
RF SWP

SYSTEM
CONTROL
(SEE PAGE 3-8)

VIDEO 2
(SEE PAGE 3-5)

9

9

TEL [phone] QQ 376315150 892498299

w

w

w

.

x

i

a

o

y

05

u

1

6

3

.

c

o

5.1Vp-p (2V)

m

3-4

3-3. VIDEO2 BLOCK DIAGRAM

SLV-ED8/ED9

15

Q202

BUFFER

3

7

IC201 (1/2)

Y/C PROCESS

R

P

9

IC201 !¢ REC

C LPF

PB EQ

4

6

SEQ

R

P

2

3

KIL

S

N

1416

2

IC201 !• REC/PB

9

Q

Q

MA-325 BOARD (2/5)

(SEE PAGE 4-11,4-23,4-25)

TEL [phone] QQ 376315150 892498299

PB RF

VIDEO 1
(SEE PAGE 3-4)

REC RF

E

COMP SYNC

C ROT

L

T

3

IC201 !∞ PB

576mVp-p(H)

1

ACC

DET

ACC
AMP

SUB

CONV

17

1

Q203

BUFFER

6

MAIN
CONV

SUB
BPF

5

IC201 $™ REC/PB

5

BPF2

S
N

20

18

66

1

3

C ROT

1

1/2

P

R

FM

AGC

REC

EQ

IC201 @• REC

R

P

DOUB

MOD

LIM

FM

5

DL EQBPF1

DEM

DE

EMH

0

SUB
LPF

Q

NL

DE-EM

Q

DHP

NC

YNRLPF

R

P

REC:440mVp-p(H)
PB:400mVp-p(H)

25

CLP

26

3

7

5 7 4042

348

150

Q206

EMPH

DE

IC201 $• REC/PB

REC:320mVp-p(H)
PB:270mVp-p(H)

IC202

CCD DELAY

1H
DL

1H/2H

DL

6

8

3

13 52

10

CLK

552mVp-p (3.58MHz)

1

IC202 7 REC/PB

9

400mVp-p(H)

Q208

BUFFER

Q204

BUFFER

Q201

BUFFER

IC201 %∞ REC/PB

1

5

X202

3.58MHz

2

CLP

5

56

55

0

IC202!£ REC/PB

4

REC:360mVp-p (H)
PB:270mVp-p(H)

LPF

COMB

CTH

8

KIL

B.D.

NAP

BPF

9

REC
BGA

PB

BGA-B

9

R

P

2

VCLK (IIC)

VSDATA (IIC)

8

4

2

9

9

TEL [phone] QQ 376315150 892498299

9

9

2

8

9

63
64

VCLK (IIC)
VSDATA (IIC)

CNJ901

LINE-1

IN

CNJ480

LINE-2

IN

w

VIDEO

VIDEO

IO-64 BOARD (1/2)

(SEE PAGE 4-32)

w

w

340mVp-p(H)

CN480

5 5

L2 VIDEO

05

.

CN423

310mVp-p(H)

x

i

28
30
32

a

TU VIDEO

o

1Vp-p(H)

TUNER
(SEE PAGE 3-11)

34 35

+

y

VIDEO

AGC

u

P

R
P

R

1

CTL

PIC

Y/C

MIX

FBC

6

C

45

NC

SYNC

SEP

QV/QH

INS

VIDEO

IC201 #¶ REC/PB

4.4Vp-p (H)

3

AMP

37

33

38

IC401 @•REC/PB

.

3.6 Vp-p (13.89 MHz)

IC401 @º REC/PB

1.9 Vp-p (H)

c

IC401 !§,!• REC/PB

Q403, 404

BUFFER

o

2.0Vp-p ( H)

CLP

Q402
SYNC

SEP

SW5V

46

CT401

VCO ADJ

CV IN

18

CV CR

19

SYNC IN

20

15

RESET

m

IC401

OSD

V SYNC OUT

VCO
OUT

28 27

S IN

S CLK

CV OUT

SYNC DET

XTAL OUT1

XTAL IN1

VCO

IN

SYSTEM
CONTROL

TUNER
(SEE PAGE 3-11)

15
10
26

(SEE PAGE 3-8)

CNJ901

LINE-1

VIDEO

H DET
CG V

OSD CS

IC401 7 REC/PB

5.2 Vp-p (2V)

OUT

MODE
CONTROL
(SEE PAGE 3-14)

COMP SYNC
QVD

SI
S CLK

MOD V

9

10

Q401

BUFFER

16

29

7
8

CS

3

14.31818MHz

2

Q901

BUFFER

CN105

X401

IC401 2 REC/PB

1.6Vp-p (14.32 MHz)

3-5 3-6

SLV-ED8/ED9

3-4. SERVO/SYSTEM CONTROL BLOCK DIAGRAM

MA-325 BOARD (3/5)

6

(SEE PAGE 4-15,4-17,4-19)

CN101

1

2

3

4

CN102

1

4

7

5

2
6

4

2

3

CN161

CTL (X)

1

CTL (Y)

3

CN103

CAM (+)

3

CAM (+)

2

CAM (–)

1

.

3

MTR 12V

MTR 12V

2

9

IC161 $£ REC/PB

2.4Vp-p (16MHz)

CAM ENCODER

MODE SWITCH

POSITION

x

1

+

D141

6

IC021

CTL AMP

IC130

CAM MOTOR DRIVE

10

CAM+

2

CAM–

S100

MECHA

i

3

M903

CAM MOTOR

M

7

MTR 12V

DRUM VS

DRUM PG

DRUM FG

SW 5V

CTL-REF

MTR 12V

CAP VS

CAP RVS

CAP TRQ PWM

9

CAP FG

CAPSTAN

FG

PG

FG

VCC

REF

VM

FRC

VCC

VS

TL

3

1

CTL

HEAD

w

Q

M

HALL

DEVICE

M901

DRUM MOTOR

TEL [phone] QQ 376315150 892498299

M902

CAPSTAN

MOTOR

Q

OUTPUT

DRIVER

OUTPUT

DRIVER

HALL

DEVICE

T

E

w

MATRIX

U+
U–

V+
V–

W+
W–

U

V

W

L

w

5

31

4

IN2

3

IN1

a

5

IC101

DRUM ERROR

INTEGRATOR

7

PS100

IC101

CAP ERROR
INTEGRATOR

1

1

D5V

+

(1/2)

–
+

SW5V

(2/2)

+
–

3

IC001

REF AMP

+

3

–

2

CTL CHECK

o

6
5

3
2

1

(1/2)

COMPARATOR

6
5

1

IC001

–
+

S101

y

Q001

GAIN

REC PRF

5

IC161 ^•REC/PB

5.0Vp-p (2V)

(2/2)

7

SW

X161

16MHz

SW5V

u

0

74

68

69

73
35

99
72
84

70

7

77

8

67

92

15

42

43

9

22
21
20
19

1

DRUM DA

DRUM PG

DRUM FG

IC161 ^ªREC/PB

CAP DA
CAP STOP

STEP PLS
CAP RVS
CAP TRQ PWM

Q

CAP FG

REC CTL
REC COUNT

CTL RESET

PB CTL

CTLHYS HIGH

C IN (REC PRF)

XTAL

EXTAL

CAM

MODE1
MODE 2
MODE 3
MODE 4

IC161

SERVO/SYSTEM

CONTROL

IC161 1REC/PB

5.1Vp-p (2V)

5.0Vp-p (360Hz)

IC161 &º REC/PB

Q

5.1Vp-p (1kHz)

IC161 ^¶PB

5.3Vp-p (2V)

6

1

2

5

o

CN105

24

5

25

7
8

1

IC161 7REC

5.0Vp-p (2V)

T. SENS

Q100

T. SENS

Q111

LED

DRIVE

SW12V

c

9

5

Q101

8

46

SO

44

ASURA CS

RF ENV

SCKI

SOI

RE SWP

S CLK

V SYNC

QVD

AF REC P

AF REC

AF ENV
AF SWP
A MUTE

7

TV/VTR

AV ADJ

T SENS

S SENS

T/S LED

T REEL FG

S REEL FG

40

60
81
80

1

45

SI

47

66

4

30
28

2
96
59

100

31
36

3

6

26

56

61

62

32

64

PH100

T. REEL

63

PH101

S. REEL

.

ASURA RESET

SCL 0 (I2C)

SDA 0 (I2C)

FULL ERASE FULL ERASE

3

3

SI 0
ASURA CS
ASURA RESET
SCLK
SO 0

F ENV
SCK I (SSB)
SO I (SSB)
RF SWP

SI
SCLK

COMP SYNC
QVD

V CLK (IIC)
VS DATA (IIC)

DATA (IIC)
CLOCK (IIC)
AF REC P
AF REC
AF ENV
AF SWP
A MUTE

0

TV/VTR

JS161
JS162

m

4

SWP ADJ

D102

T/S LED

9

MODE
CONTROL
(SEE PAGE 3-14)

VIDEO 1
(SEE PAGE 3-4)

VIDEO 2
(SEE PAGE 3-6)

AUDIO
(SEE PAGE 3-10)

9

8

TUNER
(SEE PAGE 3-11)

2

8

4

9

2

8

2

9

9

9

TEL [phone] QQ 376315150 892498299

9

05

3-7

3-8

3-5. AUDIO BLOCK DIAGRAM

MA-325 BOARD (4/5)

Q

ERASE HEAD

TEL [phone] QQ 376315150 892498299

ERASE HEAD

MONO

AUDIO HEAD

AUDIO

FULL

Q

3

CN301

1

2

4

CN302

1

7

(SEE PAGE 4-11,4-19,4-21,4-25)

T081, Q081

BIAS ERASE

OSC

T091, Q091
BIAS ERASE

OSC

6

3

IC071

HEAD SW

2

4

3

Q092

1

FULL ERASE

5

Q301

1

NORMAL AUDIO PROCESS

80

A-H SW

5

6

5

IC201 (2/2)

AUTO

BIAS

0

7 4

REC:EP

ALC

PB

PB

PB ON

PB:EP

3 1

PB

10 11

REC

LINE
AMP

REC

8

MUTE

MUTE

ALC
DET

CTL

9

71
73
75

79

78

77

70

2

4

FULL ERASE

9

8

A MUTE

FULL ERASE

2

SLV-ED8/ED9

9

9

TEL [phone] QQ 376315150 892498299

Hi-Hi

AUDIO HEAD

CH 1

CH 2

T

CNJ901

LINE-1

CNJ480
LINE-2

IC340

9

AUDIO REC/PB AMP

PB

AMP

VCC

PB

4

2

AMP

REC CURRENT

AMP

1

AGC

DET

L2 (L) AUDIO

3

L2 (R) AUDIO

1

2

AF SWP

MUTE REC

AF REC

9

AGC

AMP

3

1

AF SWP

1

AF REC P

4

AF REC

5

3

6

5

1

3

9

CN423CN480

37

36

5
6
3
4
7
8

CN502

11

E

L

L

AUDIO

IN

IN

R

L

AUDIO

R

1

13

12

17

18

24

3

20

16

IC901

BUFFER

5 7

3

IO-64 BOARD (2/2)

(SEE PAGE 4-32)

IC360

Hi-Fi AUDIO PROCESS

BPF

LPF

Q

Q

BPF

LPF

INPUT

SELECT

12

VCO

VCO

3

EVR

7

LEVEL

DET

LPF

LPF

6

3

4421

L ch

NR

1

R ch

NR

OUTPUT

SELECT

NORMAL

SELECT

5

AF SW P

SDA
SCL

1

39
40
41
42

0

5

18
19
15
16
12

20

AF REC P
AF REC
AF SWP

8

CN901

9

2

LINE OUT L

1

LINE OUT R

3

MOD AUDIO

TUNER L
TUNER R

AF REC P

AF REC

AF ENV
AF SWP
DATA (IIC)
CLOCK (IIC)

4

9

CN951

1

3

RJ-79 BOARD

(SEE PAGE 4-25)

TUNER
(SEE PAGE 3-11)

SERVO/SYSTEM
(SEE PAGE 3-8)

2

8

9

9

AUDIO

AUDIO

CNJ953

LINE-2

OUT

CNJ901
LINE-1

OUT

L

R

L

R

w

w

w

.

05

x

i

a

o

y

u

1

6

3

.

c

o

m

3-103-9

SLV-ED8/ED9

3-6. TUNER BLOCK DIAGRAM

MA-325 BOARD (5/5)

3

CN105
19
20
21
17
18

14
23

(SEE PAGE 4-27)

VHF/UHF

VIDEO 2
(SEE PAGE 3-5,6)

IN

OUT

Q

TEL [phone] QQ 376315150 892498299

MODE CONTROL
(SEE PAGE 3-14)

PLL ENABLE

Q

PLL CLK

PLL DATA

SDA0

SCL0

AFT

TA MUTE

7

Q703

ATT AMP

MOD V

TU VIDEO

PLL CLK

PLL DATA

6

PLL ENB

TU701

AFT

3

MOD V

VIDEO

MOD A

SIF OUT

1

3 510 11 12 20 6 22 2 18

R752

SDA

5

SCL

S701

RF UNIT

3 CH

4 CH

1

TV/VTR

5

SYSTEM
CONTROL
(SEE PAGE 3-8)

CN751

6
5

2
11
10

0

SDA
SCL

SIF

L

R

8

IC1

CN1
6
5
2

11
10

KOREAN STEREO

30

SDAT
SCLK

29
25

SIFUT

1

OUT L

2

OUT R

15

XTAL1

9

2

4

9

8

2

9

9

TEL [phone] QQ 376315150 892498299

T

E

05

L

AUDIO
(SEE PAGE 3-10)

1

MOD AUDIO

3

TUNER L

TUNER R

9

4

Q751

Q752

MUTE

MUTE

2

2

9

CONTROL

Q753
MUTE

6

5

1

3

X1

24.576MHz

Q

Q

NK-11 BOARD

(SEE PAGE 4-29)

16

XTAL0

3

IC1 !§ REC/PB

740mVp-p(24.576MHz)

7

6

3

1

5

1

5

0

8

9

2

4

9

8

2

9

9

w

w

w

.

3-11

x

i

a

o

y

u

1

6

3

.

c

o

m

3-12

3-7. MODE CONTROL BLOCK DIAGRAM

ED9

SW-307 BOARD

Q

Q

3

TEL [phone] QQ 376315150 892498299

PLAY

STOP

CLICK JOG

SHUTTLE

T

E

DMS1
DMS2

STOP

PLAY

L

5
4

2

1

1

7

(SEE PAGE 4-35)

DM-77 BOARD

(SEE PAGE 4-32)

CN451

3

S459

JOG

REMOTE COMMANDER

5V

D400

POWER

9

4

6

RECEIVER

S451

REC

IC400

OUT

2

1

Q400

LED

DRIVER

S400

POWER

2

3

9

1

CN400

5

2

1

CN452

3
4

2

6

SIRCS

POWER CONT

A/D2

DMS 1
DMS 2

A/D 0

5

1

5

CN308

1

4

5

CN307
3
4

2

3

1

REMOTE COMMANDER

RECEIVER

5V

D318

POWER

ED8

OUT

S300

POWER

1

5

Q300

LED

DRIVER

S309
EJECT

FR-137 BOARD

(SEE PAGE 4-35)

IC304

0

IC301

TIMER/TUNER/MODE

CONTROL

4

79

18

42
41

16

Q

SIRCS IN

POWER CONT

A/D 2

DMS 1
DMS 2

A/D 0

Q

3

ED8

ED8

ED8

SO0

SCK 0

ASURA CS

SYS RESET

CG CS
H DET

CG V

PLL CLK

PLL DATA

PLL ENABLE

AFT

A MUTE

SDA 0

SCL 0

7

WC

SI0

12
10
11
76
77

27
21
80

35
36
37

20
40

28

26

6

78

8

3

1

7

IC303

EEP ROM

WC

9

5

SCL

SDA

1

6
5

2

5

0

4

CN303

8

9

22
23

6

25

5

4
15
20

11
10

9

16

7

13

12

9

2

8

4

9

2

SO 0
SCLK
SI0
ASURA CS
ASURA RESET

OSD CS
H DET
CG V

PLL CLK
PLL DATA
PLL ENABLE

AFT
TA MUTE

SDA 0

SCL 0

8

2

SLV-ED8/ED9

9

SYSTEM CONTROL
(SEE PAGE 3-8)

VIDEO 2
(SEE PAGE 3-6)

TUNER
(SEE PAGE 3-11)

9

9

9

TEL [phone] QQ 376315150 892498299

w

w

w

D459

JOG

Q450

LED

DRIVER

.

A/D 1

CN453

i

1

LED CS

6

DMS 1

5

DMS 2

4

A/D 0

6

A/D 1

7

LED CS

2

a

S453S457S458

FF REWPAUSE

x

1

6

3
4
2
1
6

o

CN309

FLUORESCENT

INDICATOR TUBE

ED9

ND320

y

X301

32.768KHz

X302

16MHz

BZ301

G1

ı

G6

P1

u

ı

P16

4

ı

9

12

ı

27

17

29

73

74

31

32

7

66

ı

71

44

1

ı

59

A/D 1

LED CS

TX

TFX

EXTAL

XTAL

BUZZER

GRID1

ı

GRID6

SEG1

ı

SEG16

IC301 &¢REC/PB

2.3Vp-p (32.768kHz)

IC301#™REC/PB

6

2.0Vp-p (16MHz)

POWER FAIL

RST

A/D 6

A/D 7

3

2

34

22

23

.

IC302

RESET PULSE GEN

POWER FAIL DET

8

OUT 1

6

OUT 2

S301

CHANNEL

–

ED8

S306 S302

c

EASY

TIMER

SP/EP

ED8

S303

o

CHANNEL

+

S304

m

INPUT

SELECT

CN302

S305

ONE TOUCH

TUNING

ED9

OPERATING SWITCH BLOCK

A/D 6

2

A/D 7

1

3

CHANNEL

–

4

EASY

TIMER

SP/EP CHANNEL

+

INPUT

SELECT

ONE TOUCH

TUNING

05

3-143-13

SLV-ED8/ED9

3-8. POWER BLOCK DIAGRAM

Q

L101, 102

CN101

1

AC IN

2

SR-718 BOARD

(SEE PAGE 4-43)

TEL [phone] QQ 376315150 892498299

LFT

Q

D101-104

AC RECT

3

IC101

SWITCH

7

T101

PRT

PC101

PHOTO

COUPLER

6

D201

D202

D203

D205

CN201

1
2

3

7
8

9

3

+35V

+13V

–13V

1

+6V

1
2

3

7
8

9

CN600

5

PS600

PS-414 BOARD

(SEE PAGE 4-39)

Q602, 603

PS601

1

Q600, 601
12V REG

IC600

12V REG

5V REG

5

R609

R608

0

CN601

MA-325 BOARD

(SEE PAGE 4-5~4-28)

8

10

13
14

9

18

2

11
12

1

5

3

UN30V

UN13V

MTR12V

POWER CONT

SW 12V

D6V

SW5V

–13V

–F

+F

CN162

8

10

13
14

9

18

2

11
12

1

5

3

8

TU701

9

TUNER

D161

BIAS/ERASE OSC

2

IC071

HEAD SW

T081, Q081

NK-11 BOARD

(SEE PAGE 4-29)

4

CN751

IC161

SERVO/SYSTEM

CONTROL

IC101

AMP

KOREAN
STEREO

VCC

D103

IC130

CAM MOTOR

DRIVER

IC360

HIFI

PROCESSOR

2

IC1

13

13

9

CN1

IC901

PS091

8

PS100

D130

BUFFER

T091, Q091, Q092

FULL ERASE OSC

CN101

CN102

CN103

1

7
1

1

ı

3

9

MTR12V

MTR12V

SW5V

CAM (+)
CAM (–)

M901

DRUM

MOTOR

M902

CAPSTAN

MOTOR

M903

CAM

MOTOR

9

TEL [phone] QQ 376315150 892498299

T

E

ED9

SW-307 BOARD

(SEE PAGE 4-35)

05

L

Q400

LED

DRIVER

DM-77 BOARD

(SEE PAGE 4-32)

1

D400

D459

3

9

4

IC400

REMOTE CONTROL

RECEIVER

Q450

LED

DRIVER

2

2

9

4 2

CN453

3

5

CN452

D5V

ED9

D5V

D5V

ED8

6

FR-137 BOARD

(SEE PAGE 4-35)

5

1

CN308

CN309

3

5

CN307

3

IC301

TIMER/TUNER/

MODE CONTROL

IC303

EEP ROM

IC302

RESET PULS
GENERATOR

INDICATOR TUBE

IC304

REMOTE CONTROL

RECEIVER

Q300

LED

DRIVER

ND320

FLUORESCENT

D308

D318

D309

ED8

CN303

IC001, IC021

5

1

5

1

3

6

7

29
28
27

6
3

4

3

CN105

D104

CTL AMP

IC501

VIDEO

RP AMP

IC201

Y/C

NORMAL AUDIO

PROCESSOR

Q111, Q100, Q101, D102

T SENS
S SENS

Q

Q

1
2
3

24
27

28

+F
–F

VEE

P CONT

D6V

IC340

0

HIFI

RP AMP

IC202

PH100, PH101

T REEL FG
S REEL FG

CCD

8

IC401

OSD

9

2

4

9

8

2

9

9

w

w

w

.

3-15

x

i

a

o

y

u

1

6

3

.

c

o

m

3-16 E