Sony SLVKS-1 Service manual

SLV-KS1

RMT-V301

SERVICE MANUAL

S MECHANISM

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

SPECIFICATIONS

System

Format VHS NTSC standard
Video recording system Rotary head helical scanning

Video heads Double azimuth four heads
Video signal NTSC color, EIA standards

General

Power requirements 120 V AC, 60 Hz
Power consumption

Operating temperature 5˚C to 40˚C (41˚F to 104˚F)

FM system

24 W (US, Canadian)
18 W (Mexican)

Canadian Model

Mexican Model

Dimensions Approx. 355 × 96 × 285.5 mm

Mass Approx. 3.6 kg (7lb 15oz)

Supplied accessories

Remote control (1)
Size AA (R6) batteries (2)
Audio/video cable (3-phono to 3-phono) (1)

Design and specifications are subject to change without
notice.

(w/h/d)
(Approx. 14 × 3

inches) including projecting
parts and controls

7

1

/

× 11

8

/

US Model

4

VIDEO CASSETTE RECORDER

SAFETY CHECK-OUT

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

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.

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 line cord for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.

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

7. Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.

To Exposed Metal
Parts on Set

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part having
a return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester , such as the Simpson 229 or RCA

WT -540A. Follow the manufacturers' instructions to use these

instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit” indica-

tion is 0.75V, so analog meters must have an accurate low-

voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-

amples of a passive VOM that is suitable. Nearly all battery

operated digital multimeters that have a 2V AC range are suit-

able. (See Fig. A)

AC

0.15 µF

1.5 k

Ω

Earth Ground

Voltmeter
(0.75 V)

Fig. A Using AC voltmeter to check AC leakage

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMA TIC 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.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMA TIQ UES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM­POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

– 2 –

TABLE OF CONTENTS

Section Title Page Section Title Page

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

6. ADJUSTMENTS

1. GENERAL

Play Timer...................................................................... 1-1

Cassette Door Lock (Safety Lock) ................................ 1-1

Recording and Tape Speed Buttons ............................. 1-1

Connections .................................................................. 1-2

2. DISASSEMBLY

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

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

2-3. Rear Panel (M) Removal .............................................. 2-1

2-4. Mechanism Deck Removal ........................................... 2-1

2-5. MA-370 Board Removal................................................ 2-2

2-6. Internal Views ................................................................ 2-3

2-7. Circuit Boards Location ................................................. 2-4

3. BLOCK DIAGRAMS

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

3-2. Video Block Diagram..................................................... 3-3

3-3. Servo/System Control Block Diagram .......................... 3-5

3-4. Audio Block Diagram..................................................... 3-7

3-5. Power Block Diagram.................................................... 3-9

4. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS

6-1. Mechanical Adjustments ............................................... 6-1

6-2. Electrical Adjustments ................................................... 6-1

2-1. Pre-Adjustment Preparations........................................ 6-1

2-1-1. Instruments to be Used............................................ 6-1

2-1-2. Connection ............................................................... 6-1

2-1-3. Set-up of Adjustment ................................................ 6-1

2-1-4. Alignment Tapes....................................................... 6-1

2-1-5. Specified I/O Level and Impedance

input/output terminal ................................................ 6-1

2-1-6. Adjusting Sequence ................................................. 6-2

2-2. Power Supply Adjustment ............................................. 6-2

2-2-1. Power Supply Check................................................ 6-2

2-3. Servo System Adjustment............................................. 6-2

2-3-1. RF Switching Position Adjustment........................... 6-2

2-4. Audio System Adjustments ........................................... 6-3

2-4-1. Normal Audio System Adjustment ........................... 6-3

1. ACE Head Adjustment .................................................. 6-3

2. E-E Output Level Check ............................................... 6-3

3. Frequency Response Check......................................... 6-3

2-5. Parts Arrangement Diagram for Adjustments............... 6-4

7. REPAIR PARTS LIST

7-1. Exploded Views ............................................................. 7-1

7-1-1. Front Panel and Chassis Assembly ......................... 7-1

7-1-2. Mechanism Chassis Assembly (1) ........................... 7-2

7-1-3. Mechanism Chassis Assembly (2) ........................... 7-3

7-1-4. Mechanism Chassis Assembly (3) ........................... 7-4

7-2. Electrical Parts List........................................................ 7-5

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

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

MA-370 Printed Wiring Board ....................................... 4-5

MA-370 (Head Amp) Schematic Diagram .................... 4-7

MA-370 (Video, Audio) Schematic Diagram................. 4-9

MA-370 (Servo/System Control)

Schematic Diagram ....................................................... 4-13

MA-370/QP-1 (Kids Sound) Printed Wiring Board

and Schematic Diagram................................................ 4-17

MA-370 (Mode Control) Schematic Diagram ............... 4-19

MA-370 (Power Supply) Schematic Diagram ............... 4-21

5. INTERFACE, IC PIN FUNCTION DESCRIPTION

5-1. System Control-Video/RP Block Interface

(MA-370 BOARD IC160)............................................... 5-1

5-2. System Control-Servo Peripheral Circuit Interface

(MA-370 BOARD IC160)............................................... 5-1

5-3. System Control-Mechanism Block Interface

(MA-370 BOARD IC160)............................................... 5-2

5-4. System Control-System Control Peripheral

Circuit Interface (MA-370 BOARD IC160) .................... 5-3

5-5. System Control-Audio Block Interface

(MA-370 BOARD IC160)............................................... 5-3

5-6. Servo/System Control Microprocessor Pin Function

(MA-370 BOARD IC160)............................................... 5-4

– 3 –

SERVICE NOTE

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)

Front Panel

Section

(Page 2-1)

FL Complete

Ass’y

(Page 13)

Retainer

Plate

(Page 22)

FL Slider

Block Ass’y

(Page 22)

Cam Gear

(Page 23)

Pinch Press

Block Ass’y

(Page 14)

Mechanism

Deck

(Page 2-1)

Rubber

Belt

(Page 15)

Capstan

Motor

(Page 15)

Cam Motor

Retainer

(Page 31)

Ground Shaft

Ass’y

(Page 13)

Drum
Ass’y

(Page 13)

Rubber

Belt

(Page 15)

Pully Gear

Ass’y

(Page 29)

Reel Direct

Ass’y

(Page 30)

Rear Panel

(M)

(Page 2-1)

MA-370

Board

(Page 2-2)

Rotary
Switch

(Page 2-1)

Tuner

Unit

Rubber

Belt

(Page 15)

Slider

(Page 26)

Loading

Gear (T, S)

(Page 28)

Cam Motor

(Page 31)

– 4 –

SECTION 1

GENERAL

SLV-KS1

This section is extracted from instruc­tion manual. (3-062-072-11)

Step Step

Step

Turn on your TV

D

O

O

R LO

CK

T

V

O

L

C

HV

TV/VIDEO

P

L

A

Y

F

F

ER

Insert your
tape here

PU

S

H

S

P/EP

RE

C

Play Timer

The Play Timer function allows you to control the amount of time your child watches a video. For
example, let’s say you want your child to watch a cartoon for 90 minutes.

Press the PLAY TIMER SET UP button for more than five seconds.

1

The set up screen appears on your TV.

Press the M (fast forward) or m (rewind) buttons to select 90

2

minutes.

The time will change in thirty minute increments. If you continue to
press either the M (fast forward) or m (rewind) button, the playing
time will scroll as follows:
OFF y 30 y 60 y 90 y 120 y 150 y 180 y OFF

After you select the playing time, press the PLAY TIMER SET UP button.

3

The ON/OFF row of the (repeat) option is highlighted.

Press the M (fast forward) or m (rewind) button to set the repeat function ON or OFF.

4

If you select ON and the tape reaches the end before the timer is up, it will automatically rewind
and play the tape from the beginning.

Press the PLAY TIMER SET UP button again.

5

The set up screen will disappear and the timer will start. Follow the steps above to start
watching a video.

When your child is watching a video, all of the buttons (except the z REC (record) button) will
work. After the set playing time has elapsed, the power will turn off and all of the buttons will be
locked for one hour. If you press a button while the VCR is locked, the light on the POWER I/1
button will flash for five seconds.

To check the remaining time

Press the PLAY TIMER SET UP button once. The remaining time will appear on your TV screen.
When five minutes are left, the remaining time will automatically appear on your TV screen for 30
seconds.

To cancel the Play Timer

Press the PLAY TIMER SET UP button for more than five seconds. When the set up screen appears
on your TV, use the M (fast forward) or m (rewind) buttons to set the timer to OFF.

Notes

• As soon as you complete step 5 above, the timer will start to run even if you turn off the VCR. This means that the VCR
may enter the lock mode while the power is off, or that when you turn the VCR back on, the Play Timer will return to
the last setting you made. Follow the explanations above to change or cancel the Play Timer.

• The repeat function will rewind the tape no more than five times, regardless of the tape length or timer setting.

Cassette Door Lock (Safety Lock)

You can lock the cassette door to prevent your child from inserting or ejecting
cassette tapes. To lock the door, press down the PUSH button and move the
DOOR LOCK slide to the left until it clicks in place.

To unlock the door, press down the PUSH button and move the DOOR LOCK
slide to the right.

Recording and Tape Speed Buttons

You can use this VCR to record images input through the LINE IN jacks. For example, let’s say you
want to record images of your child that you took with your video camera.

Press the SP/EP button to set the tape speed.

1

EP (Extended Play) provides recording time three times as long as SP (Standard Play).
However, SP produces better picture and audio quality.

Connect your video camera’s LINE OUT jacks to the LINE IN jacks on the back of this

2

VCR, and insert a blank tape with its safety tab intact into this VCR. (If you are recording
a program on your TV, be sure to disconnect the VCR’s LINE OUT jacks from your TV’s
LINE IN jack and set the TV’s TV/VIDEO button to TV.)

Press the z REC (record) button on this VCR.

3

Start playing the tape in your video camera.

4

The REC mark and tape speed (EP or SP) appear on your TV screen. To stop recording,
press x STOP.

Note

• The z REC button will not function when the Play Timer is activated. Cancel the Play Timer before you make a
recording.

and press your TV’s
TV/VIDEO* button

* The name of this button may be different

on your TV.

Press to
turn ON/
OFF

Press to
eject

N PLAY button

Press this button to play a tape.

m REW (rewind)
button

Press x STOP and
then this button to
rewind a tape. To
watch the picture in
fast motion, press this
button while the tape
is playing.

x STOP button

Press this button to stop the tape when it is
playing, rewinding, fast forwarding, or recording.

X PAUSE button

Press this button to momentarily stop the tape.

VOL +/– buttons:
These buttons change the
volume on your TV.

CH +/– buttons:
These buttons change the
channels on your TV.

TV I/1 (power) button:
Use this button to turn your TV
on and off.

TV/VIDEO button:
This button switches your TV
between regular TV programs
and the video input.

You must first program your remote
control to use the buttons 1 through
4 above (see below).

A playful animation will appear whenever you
rewind, fast forward, or insert a tape.

M FF (fast
forward) button

Press x STOP and
then this button to fast
forward a tape. To
watch the picture in
fast motion, press this
button while the tape
is playing.

Program your Remote Commander remote control!

You can set your remote control to control the power, channel, volume, and video input of your TV.
First find the manufacturer’s name of your TV. Then, while holding down the TV power button

(button TV I/1) on the remote control, press the operation buttons in the order shown in the chart.

Manufacturer

Sony

Akai/AOC/Emerson/Gold Star/
J.C.Penney/Marantz/MGA/
Mitsubishi/NEC/Philco/RCA/
War d s

Centurion/Curtis-Mathes/
Daytron/J.C.Penney/Magnavox/
MGA/Mitsubishi/NEC/Sampo/
Scott/Sylvania/Wards/York

Coronado/Emerson/Gold Star/
Hitachi/KMC/Magnavox/Philco/
Portland/Sharp/Teknika/Wards

Emerson/Radio Shack/Teknika

Fisher/Sanyo/Sears

General Electric/Panasonic/Quasar

POWER

DISPLAY button:
This button will turn on or off
the animations that appear
when you fast forward or
rewind a tape.

POWER /1 button:
Although this button turns the
VCR on and off, the VCR will
turn on automatically when
you insert a tape or press the

N PLAY, M FF, m REW,
z REC, or PLAY TIMER SET

UP buttons. The VCR will turn
off automatically if no buttons
are pressed for more than five
minutes after the tape is
stopped or ejected.

Press

N then x
N then X

M then x

N then m

m then N
M then N
x then m

PLA

Y TIM

ER

S

ET U

P

PAUSE DISPLA

V

ID

E

O

Inserting the batteries

Insert two size AA (R6) batteries by
matching the + and – on the batteries
to the diagram inside the battery
compartment.
Insert the negative (–) end first, then
push in and down until the positive
(+) end clicks into place.

Manufacturer

General Electric/RCA/Sears

Gold Star/MGA/Mitsubishi

Hitachi

JVC

Magnavox/Philips/Sylvania/
Teknika

Marantz/MGA/Mitsubishi

Panasonic

Pioneer

Quasar/Sharp

Radio Shack/Sharp

Sears/Toshiba

Zenith

REW

S

T

O

P

Y

m

POW

Press

M then X
X then N
N then M
M then m
x then N

m then X
X then M
m then M
X then x
x then M
x then X
m then x

Press to
play!

Press to
rewind

Press to
fast
forward

Press to

OFF

O N OFF

90MIN

O N OFF

PUSHDOOR LOCK

DOOR LOCK PUSH

1-1

Connections

Follow the steps below to connect your TV to the VCR.

VCR

Your TV

A

U

D

IO

(M

O

N

O

)

V

ID

E

U

T

1

VIDEO OUT

O

AUDIO IN R

2

A

U

D

IO

V

ID

R

L

1

VIDEO IN

AUDIO IN L

E

O

L

IN

E

I

N

L

IN

E

O

2

AUDIO

3

to an AC outlet

Step 1

Using the supplied audio/video cable, connect one of the yellow plugs to VIDEO of LINE OUT on
this VCR, and the other yellow plug to VIDEO of LINE IN on your TV.

Step 2

Connect both of the red and white plugs, in any order, to the black AUDIO LINE OUT jacks on this
VCR, and the other ends to the AUDIO LINE IN jacks on your TV. If your TV is monaural (only one
AUDIO LINE IN jack), you only need to use one of the red or white plugs. Just be sure to connect
the same color plug to both the VCR and your TV.

Step 3

Plug in the power cord to an AC outlet.

Note

• If your TV only has an RF jack (antenna jack), you need to use an RF modulator (not supplied) to connect this VCR.

OUT

Refer to your modulator’s instruction manual for further details.

Using the LINE IN jacks

When you want to use this VCR to make a recording, connect
LINE IN on this VCR to LINE OUT of your other video source
(such as a video camera, TV, or another video deck) using an
audio/video cable (not supplied). If your other video source
has a stereo LINE OUT (three jacks), use the audio/video
cable VMC-910MS (sold separately). Play the original tape on
the other video source and use this VCR to make the
recording. See “

Note

• If you connect your TV’s LINE OUT jacks to the LINE IN jacks, be sure to disconnect the VCR’s LINE OUT jacks
from your TV’s LINE IN jacks.

Recording and Tape Speed Buttons” on the reverse for more information.

AUDIO IN

LINE IN

AUDIO

(M

O

N

O

)

VIDEO IN

VIDEO

1-21-2 E

SECTION 2

DISASSEMBLY

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

2-1. UPPER CASE REMOVAL 2-3. REAR PANEL (M) REMOVAL

SLV-KS1

1 Two tapping screws

3 Upper case

2 Two tapping

screws

4 Claw

2 Harness

3 Claw

7 Rear panel (M)

6 Three claws

1 Power cord

(CN600)

5 Two claws

2-2. FRONT PANEL SECTION REMOVAL

5 Two claws

2 Claw

1 Claw

3 Claw

6 Front panel section

4 Claw

2-4. MECHANISM DECK REMOVAL

3 Flat cable

7 Screw

(BVTP3 × 12)

6 Claw

2 Flexible board

(FFM-001)

1 Connector

(FE head)

5 Screw

(B3)

4 Connector

(ACE head)

8 Screw

(BVTP3 × 12)

0 Mechanism

deck

9 Screw

(BVTP3 × 12)

2-1

Note: When mounting the mechanism deck,

first align mark on the rotary switch.

2-5. MA-370 BOARD REMOVAL

1 Five screws

(B3)

2 MA-370 board

2-2

2-6. INTERNAL VIEWS

Drum assembly (M901) (DZH-0A2A/Z-RP)
8-839-049-53

FE head
1-500-144-11

Q002
Tape top sensor
8-729-043-84

ACE head block assembly
A-6759-620-A

Q001
Tape end sensor
8-729-043-84

D001
Tape top/end LED
8-719-048-26

M902
Capstan motor
1-698-971-11

M903
Cam motor assembly
X-3947-577-1

Drum assembly (M901) (DZH-0A2A/Z-RP)
8-839-049-53

2-3

2-7. CIRCUIT BOARDS LOCATION

QP-1
(KIDS SOUND)

MA-370

HEAD AMP, VIDEO, AUDIO, I/O,
SERVO/SYSTEM CONTROL,

()

POWER SUPPLY, MODE CONTROL

2-4

2-4 E

3-1. OVERALL BLOCK DIAGRAM

SLV-KS1

SECTION 3

BLOCK DIAGRAMS

J562 (1/4)

J562 (2/4)

LINE

IN

LINE

IN

SP

CH 1

SP

CH 2

EP

CH 1

EP

CH 2

AUDIO

REC/

HEAD

AUDIO

ERASE

HEAD

FULL

ERASE

HEAD

(MONO)

PB

DRUM

AUDIO

VIDEO

L

L VIDEO 1

IC260

VIDEO

REC/PB

AMP

L 1(L)

A HEAD PB

A HEAD REC

PB Y/C

REC Y/C

C SYNC

HA SWP

RF SWP

RF ENV

IC350

HEAD

SWITCH

IC201

(1/2)

Y/C

PROCESS

CCD

DELAY

T380,Q380

BIAS
OCS

Q VD
I2C DATA

I2C CLK

IC201

NOMAL

AUDIO

PROCESS

IC160

(1/2)
OSD

NORM OUT

(2/2)

(SEE PAGE 4-7,9,13,19,21)

Q500

RF VIDEO

BUFFER

MA-370 BOARD

Q561

BUFFER

L

AUDIO

(MONO)

R

J562 (4/4)

LINE
OUT

VIDEO

J562 (3/4)

LINE
OUT

QP-1 BOARD

IC999

KIDS SOUND

AUDIO OUT

(SEE PAGE 4-17)

PLL DATA
PLL CLOCK
PLL ENB

SIGNAL

CONTROL

IC161

EEPROM

IC162

POWER

FAIL DET

RESET

PULSE GEN

IC403

REMOTE
CONTROL
RECEIVER

Q VD

HA SWP
RF SWP

RF ENV

I2C DATA
I2C CLK

REMOCON

IC160

SERVO/
SYSTEM

CONTROL

(2/2)

D VS

D PG

D FG

CAP VS

CAP FG

CTL REC/PB

CAM +,-

MODE1-4

T REEL FG

S REEL FG

T SENS

S SENS

T/S LED

FUNC KEY 2

FUNC KEY 1

PH102

(T. REEL)

PH101

(S. REEL)

Q101

(T. SENS)

Q102

(S. SENS)

Q103

LED

DRIVE

IC101

CAM

MOTOR

DRIVE

SW12V

FUNCTION

KEY

FUNCTION

KEY

S102

CAM

ENCODER

D103

(T/S. LED)

DRUM MOTOR

M901

DRUM

M

MOTOR

DRUM

PG

DRUM

FG

CAPSTAN MOTOR

M902

CAPSTAN

M

MOTOR

CAPSTAN

FG

CTL

HEAD

LOADING

M

M903

MOTOR

05

3-1 3-2

SLV-KS1

3-2. VIDEO BLOCK DIAGRAM

CH1

CH2

CH1

CH2

ENVDET_OUT

ENV
DET

COMP_OUT

ATF

REC/MUTE/PB

380mVp-p

(SEE PAGE 4-7,9,13)

IC201 wk REC/PB

4.2Vp-p

5

H_SYNC

6

PB_OUT

7
2

HA (EP/SP)

3

4

SW30

REC_C_IN

10

REC_Y_IN

9

11
12

1

TRICK. H

(H)

(H)

IC260 7 PB

0.6Vp-p

IC201 ej REC

1.0Vp-p

(H)

(1/2)

IC201

Y/C PROCESS

CCD DELAY

(V)

C

LPF

PB
EQ

6 8

IC201 2 REC

380mVp-p

IC201 7 REC

3237 31

R
P

Q201

BUFFER

(H)

360mVp-p

SYNC

SEP

ACC
AMP

SQPB

EQ

S
N

REC_C OUT

2

REC_FM_OUT

7

95

REC_H_OUT

16

REC _CURRENT_CTL

99

TRICK_H_OUT

CLP

28

(V)

IC201 1 PB

0.6Vp-p

R
P

1

FM

4

AGC

IC260 4 REC/PB

(V)

3.6Vp-p

IC260 9 REC

170mVp-p

VIDEO

AGC

KIL

RF_PULSE_IN

98

IC201 wd PB

0.5Vp-p

R
P

BACK UP

SUB

COMV.

FM

AGC

REC

EQ

(H)

AMP

IC201 ok

1.6Vp-p

MA-370 BOARD (1/3)

J562 (1/4)

LINE

IN

VIDEO

IC260 5 REC/PB

3.5Vp-p

(H)

IC260

VIDEO REC/PB AMP

DRUM

SP

SP

6

8

CN260

7

EP

EP

9

11

10

CN270

PB RF

2

CHECK

RF SWP

PIN

3

16

19

24

21

17

22

IC260 qj REC

3.8Vp-p

PB

PB

PB

HA

CONT

COMP

PB

REC

AGC

DET

REC

AGC

REC_CURRENT_ADJ2

IC260 0 REC

DEM

MOD

SUB
BPF

FM

REC/PB

(30Hz)

IC201 wl REC

2.1Vp-p

R
P

Y/C

MIX

PIC

CONT

MAIN

COMV.

SUB
LPF

MAIN

EMPH.

C ROT PULSE IN

96

(H)

R
P

FBC 1/2

BPF2

R
P

CHARA

INS

R
P

N.L

EMPH.

SERIAL

DECODER

2021

IC201 wl PB

2.3Vp-p

6dB

AMP

KIL
B.D

LPF

BPF1

(H)

DETAIL

ENH

YNR
RP

R

10 17

P

PB

BGA-B

PB

BGA-A

REC
BGA

IC160 th

29

2.0Vp-p

23

24

43 46 47

1H

DL

CLP

5361

INV

55

LPF

DL

EQ

Q202

DE

EMPH

P
R

CLP

B

REC
APC

PA

VCO

REC/PB

(H)

Q203

BUFFER

41

CCD_CLOCK_IN

1H/2H

DL

VXO1

QV/QH_INS

Q502

BUFFER

AMP

SLD

50

5259

63

67

66

65

62
60

25

50

OSD V IN

56

C VIDEO IN

IC160 t; REC

2.2Vp-p

(H)

IC160

OSD

X201

3.579545MHz

(1/3)

OSD V OUT

IC201 yj REC/PB

460mVp-p

Q VD IC160

I2C DATA IC160
I2C CLK IC160
C ROT IC160 15

RF ENV IC160 8
ENV SW IC160
HA SWP IC160
RF SWP IC160

IC160 t; PB

2.3Vp-p

52

(3.579545MHz)

(H)

Q500

BUFFER

13

72
71

17
16
18

REC

IC160 ts

2.2Vp-p

(H)

FROM/TO

SYSCON

BLOCK

(SEE PAGE 3-5)

Q561

BUFFER

IC160 ts

2.3Vp-p

J562 (2/4)

LINE
OUT

PB

(H)

VIDEO

05

3-3 3-4

3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM

SLV-KS1

M

HALL

DEVICE

M901

DRUM MOTOR

M902

CAPSTAN

MOTOR

SW5V

HALL

DEVICE

OUTPUT

OUTPUT

MATRIX

U+

VCC

U­V+
V­W+
W-

U

V

REF

W

CAPSTAN

FG

VCC

MA-370 BOARD (2/3)

M12V

D109

CN101

1

1

2

3

4

7
1
6

5

2

3

CN102

D VS

D PG

D FG

LIMITER

CAP VS
CTL-REF
CAP RVS

CAP FG

IC160 o;

PG REC/PB

4.6Vp-p

(30Hz)

SW5VM12V

M12V

FG REC/PB

IC160 il

(360Hz)

4.5Vp-p

C160 ij CAP FG SP

PS101

2

3

PG

FG

4

VM

TL

7
1
6

5
44
2

3

(SEE PAGE 4-13)

IC160

SERVO CONTROL

77

DRUM ERR

90

DRUM PG

89

DRUM FG

76

CAP ERR

91

AMP Vref OUT

24

CAP RVS

87

CAP FG

(2/3)

IC160 i;T REEL

4.8Vp-p

1.6sec (TAPE TOP)

IC160 ul S REEL

4.8Vp-p

0.9sec (TAPE TOP)

T/S. LED

D103

D103

IC160 el

D5V

REC/PB

SW12V

IC162

RESET

PULSE

GEN

POWER

FAIL
DET

S101

REC

PROOF

PH102

(T. REEL)

PH101

(S. REEL)

Q101

(T. SENS)

Q102

(S. SENS)

6

8

Q103

LED

DRIVE

34

78

79

7

6

20

30

RST

P FAIL

T REEL 80

S REEL

T SENS

S SENS

END LED

REC PRF

IC160IC160

SYSTEM CONTROL

PLL ENABLE

(3/3)

PLL DATA

PLL CLK

MAIN/SAP

IC161

EEPROM

32I2C DATA EEP
31I2C CLK EEP

60
59
61

83

5
6

DATA
CLK

Q405

LED

DRIVE

D401

POWER LED

RESET

S-DATA

S-CLK

CN104

4

FOR

2

CHECK

3

PLL DATA
PLL CLOCK
PLL ENABLE

QP-1 BOARD (1/2)

(SEE PAGE 4-17)

2
1
8

KIDS SOUND

PI
ST
PDWN

3
2
1

CN999

(1/2)

IC999

IC999 6

3.0Vp-p

(1/2)

REC/PB

(4MHz)

7

X999
4MHz

6XTXT

CTL

HEAD

M903

LOADING

MOTOR

M

1

3

1
2
3

CN161

CN103

CTL(X)

CTL (Y)

(1078Hz)

4.4Vp-p

IC160 og REC

5.0Vp-p

(30Hz)

S102

CAM

ENCODER

95

CTL + IN

94

CTL - IN

MOTOR DRIVE

2

CAM (-)

10

CAM (+)

IC101

CAM

IN 2

4

TO/FROM

(SEE PAGE 3-4)

VIDEO
BLOCK

IC201

TO

AUDIO

BLOCK

(SEE PAGE 3-10)

5.0Vp-p

,IC260
,IC260

98

(14.31818MHz)

IC201

25

IC260
IC260

IC201

96

IC201

20

IC201

21

IC201

94

6
2
3
4

IC160 rg

4.6Vp-p

RF ENV
ENV SW
HA SWP
RF SWP

C ROT

I2C DATA

I2C CLK

(25.3MHz)

Q VD

REC/PB

X160

14.31818MHz

L500

38

39

44

45

33

29
28
27
26

13

8
17
16
18

15
72

71

63A MUTE

4fsc (in)

4fsc (out)

OSC IN

OSC OUT

CAM

MODE1
MODE2
MODE3
MODE4

QVD

V RF ENV
ENV SW
HA SWP
RF SWP

C ROT
I2C DATA

I2C CLK

A MUTE

S423

EP/SP

5FUNC KEY1

S401

POWER

4FUNC KEY2

S410
REW

14REMOCON

S425

PLAY TIMER

SETUP

S412
STOP

1

x

S409

S413

PLAY

FF

M

M

S424

REC

z

S406

EJECT

A

B

1

IC403

REMOTE
CONTROL
RECEIVER

05

3-5 3-6

SLV-KS1

3-4. AUDIO BLOCK DIAGRAM

J562 (3/4)

LINE

IN

AUDIO

(MONO)

MA-370 BOARD (3/3)

(SEE PAGE 4-9)

89

L1

74

TU

78

HA_PULSE_IN

97

88

IC201

NOMAL

AUDIO

PROCESS

REC

AUTO

AUTO

BIAS

(2/2)

EQ

ALC

VREF

REC:EP,LP

PB:EP

93 92

REC

86

J562 (4/4)

AUDIO

LINE

Q351

MUTE

SWITCH

P

LINE

MUTE

AMP

R

REC

85

8487

AUDIO_MUTE_CTL

80

81

82

94

A MUTE IC160

FROM

SYSCON

63

BLOCK

(SEE PAGE 3-5)

(MONO)

OUT

AUDIO

REC/PB

HEAD

AUDIO
ERASE

HEAD

FULL

ERASE

HEAD

HEAD

CN350

4

IC350

HEAD

3

1

T380,Q380

1

CN351

05

T380 6 REC

SWITCH

BIAS
OSC

50Vp-p (69.9kHz)

42

AUDIO OUT

Q350
BIAS

SWITCH

QP-1 BOARD (2/2)

(SEE PAGE 4-17)

CN999

6

(2/2)

IC999

KIDS SOUND

4

AOUT

(2/2)

3-7 3-8