SLV-EX5AR, SLV-EX8SAR, SLV-EX9SAR - Sony VCR Service Manual (repair manual)

Formato

VHS N-PAL,  NTSC estándar

Cobertura de canales

VHF 2 a 13
UHF 14 a 69
CATV A-8 a A-1, A a W, W+1 a W+84

Antena

Terminal de antena de 75 ohmios para VHF/
UHF

LINE IN

VIDEO IN, toma fonográfica (1)
Señal de entrada: 1 Vp-p, 75 ohmios,
desbalanceada, sincronización negativa
AUDIO IN,
toma fonográfica (2) (SLV-EX9S AR/EX8S AR)
toma fonográfica (1) (SLV-EX5 AR)
Nivel de entrada: 327 mVrms
Impedancia de entrada: superior a 47
kiloohmios

LINE-2 IN (sólo SLV-EX9S AR/EX8S AR)

VIDEO IN, toma fonográfica (1)
Señal de entrada: 1 Vp-p, 75 ohmios,
desbalanceada, sincronización negativa
AUDIO IN, toma fonográfica (2)
Nivel de entrada: 327 mVrms
Impedancia de entrada: superior a 47
kiloohmios

LINE-1 OUT

VIDEO OUT, toma fonográfica (1)
Señal de salida: 1 Vp-p, 75 ohmios,
desbalanceada, sincronización negativa
AUDIO OUT,
toma fonográfica (2) (SLV-EX9S AR/EX8S AR)
toma fonográfica (1) (SLV-EX5 AR)
Salida estándar: 327 mVrms
Impedancia de carga: 47 kiloohmios
Impedancia de salida: inferior a 10 kiloohmios

Requisitos de alimentación

110 - 240 V CA, 50/60 Hz

Consumo de energía

SLV-EX9S AR 17W
SLV-EX8S AR/EX5 AR 15W

Temperatura de funcionamiento

5°C a 40°C

Temperatura de almacenamiento

–20°C  a 60°C

Dimensiones

Aprox. 430 

×

 97 

×

 292.5 mm (an/al/prf)

incluidas partes y controles  salientes

Peso

Aprox. 4,1 kg.

Reserva  de alimentación

Capacitor incorporado de autocarga
Duración de la reserva: máximo de 8 horas en
una vez

Control remoto (1)
Pilas tamaño AA (R6) (2)
Cable coaxial de 75 ohmios con conector es tipo F (1)

Diseño y especificaciones sujetos a cambios sin
previo aviso.

Argentina Model

Photo: SLV-EX9SAR

* The abbreviations of EX5/EX8S and EX9S contained in this service

manual are indicated when these models are common to all their cor-
responding models as given below.

Abbreviated

EX5

EX8S

EX9S

model name

All model

names

EX5AR

EX8SAR

EX9SAR

SLV-

S  MECHANISM

1. Check the area of your repair for unsoldered or poorly-sol-

dered 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 transis-

tors, that were installed during a previous repair.  Point them
out to the customer and recommend their replacement.

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

4. Look for parts which, though functioning, show obvious signs

of deterioration.  Point them out to the customer and recom-
mend their replacement.

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

0

0

Section

Title

Page

Section

Title

Page

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

1.

GENERAL

Procedimientos iniciales ............................................... 1-1
Operaciones básicas ..................................................... 1-6
Operaciones adicionales ............................................... 1-10
Edición ........................................................................... 1-14
Información complementaria ......................................... 1-14
Índice de componentes y controles .............................. 1-14

2.

DISASSEMBLY

2-1.

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

2-2.

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

2-3.

PSM17-501 Board Removal ......................................... 2-1

2-4.

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

2-5.

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

2-6.

MA-377 Board Removal ................................................ 2-2

2-7.

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

2-8.

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.

Tuner Block Diagram ..................................................... 3-9

3-6.

Mode Control Block Diagram ........................................ 3-11

3-7.

Power Block Diagram .................................................... 3-13

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-377 Printed Wiring Board ....................................... 4-5
MA-377 (Video, Audio) Schematic Diagram ................. 4-9
MA-377 (System Control) Schematic Diagram ............ 4-13
MA-377 (Servo Control) Schematic Diagram ............... 4-15
MA-377 (Hi-Fi Audio) Schematic Diagram .................... 4-17
MA-377 (Tuner) Schematic Diagram ............................ 4-19
MA-377 (I/O) Schematic Diagram ................................. 4-21
MA-377 (Mode Control) Schematic Diagram ................ 4-23
FJ-26, MF-321 Printed Wiring Boards and
Schematic Diagrams ..................................................... 4-25
DS-92, KK-24 Printed Wiring Boards and
Schematic Diagrams ..................................................... 4-27
PSM17-501 Printed Wiring Board ................................. 4-29
PSM17-501 Schematic Diagram ................................... 4-31

5.

INTERFACE,  IC  PIN  FUNCTION  DESCRIPTION

5-1.

System Control-Video Block Interface
(MA-377 BOARD IC101) ............................................... 5-1

5-2.

System Control-Servo Peripheral Circuit Interface
(MA-377 BOARD IC101) ............................................... 5-1

5-3.

System Control-Mechanism Block Interface
(MA-377 BOARD IC101) ............................................... 5-2

5-4.

System Control-Audio Block Interface
(MA-377 BOARD IC101) ............................................... 5-3

5-5.

Servo/System Control,
OSD Microprocessor Pin Function
(MA-377 BOARD IC101) ............................................... 5-4

6.

ERROR  CODES

....................................................... 6-1

7.

ADJUSTMENTS

7-1.

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

7-2.

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

2-1.

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

2-1-1. Instruments to be Used ............................................ 7-1
2-1-2. Connection ............................................................... 7-1
2-1-3. Set-up of Adjustment ............................................... 7-1
2-1-4. Alignment Tapes ....................................................... 7-1
2-1-5. Specified I/O Level and Impedance

Input/Output terminal ............................................... 7-1

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

2-2.

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

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

2-3.

Servo System Adjustment ............................................. 7-2

2-3-1. RF Switching Position Adjustment ........................... 7-2

2-4.

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

2-4-1. Hi-Fi Audio System Adjustment ............................... 7-3
1.

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

2.

Frequency Response Check .................................... 7-3

3.

Overall Level Characteristic and
Distortion Factor Check ........................................... 7-4

4.

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

2-4-2. Normal Audio System Adjustment ........................... 7-4
1.

ACE Head Adjustment ............................................. 7-4

2.

E-E Output Level Check ........................................... 7-4

3.

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

4.

Overall Level Characteristic and Distortion
Factor Check ............................................................ 7-5

5.

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

2-5.

Tuner System Adjustment ............................................. 7-5

2-5-1. Separation Adjustment ............................................. 7-5

2-6.

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 ....................... 8-1
8-1-2. Chassis Assembly .................................................... 8-2
8-1-3. Mechanism Chassis Assembly (1) ........................... 8-3
8-1-4. Mechanism Chassis Assembly (2) ........................... 8-4
8-1-5. Mechanism Chassis Assembly (3) ........................... 8-5

8-2.

Electrical Parts List ....................................................... 8-6

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

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)

PSM17-501

Board

(Page 2-1)

Pinch Press

Block Ass’y

(Page 14)

Ground Shaft

Ass’y

(Page 13)

Mechanism

Deck

(Page 2-2)

FL Complete

 Ass’y

(Page 13)

Drum
Ass’y

(Page 13)

Rear

Panel

(Page 2-1)

Rubber

Belt

(Page 15)

Rubber

Belt

(Page 15)

Slider

(Page 26)

Loading

Gear (T, S)

(Page 28)

Retainer

 Plate

(Page 22)

Rubber

Belt

(Page 15)

Capstan

Motor

(Page 15)

FL Slider

 Block Ass’y

(Page 22)

Pully Gear

Ass’y

(Page 29)

Cam Motor

Retainer

(Page 31)

Cam Gear

(Page 23)

Cam Motor

(Page 31)

Reel Direct

Ass’y

(Page 30)

MA-377

Board

(Page 2-2)

Rotary
Switch

(Page 2-2)

Tuner

Unit