Sony SLV-ED1PL User Manual

MICROFILM
SERVICE MANUAL
Korean Model
SLV-ED7KR
Philippine Model
SLV-ED1PL/ED4PL/ED8PL
RMT-V247B/V248
VIDEO CASSETTE RECORDER
SLV-ED1PL/ED4PL/ED7KR/ED8PL
G
• Refer to the SERVICE MANUAL of VHS MECHANICAL
ADJUSTMENTS VI for MECHANICAL ADJUSTMENTS.
(9-921-647-11)
* The abbreviations of ED1, ED4, ED7 and ED8 contained in this service manual
are indicated when these models are common to all their corresponding mod-
els as given below.
Photo: SLV-ED1PL
S MECHANISM
ED1PL
ED1
Abbreviated
model name
All model
names
SLV-
ED4PL
ED4
ED7KR
ED7
ED8PL
ED8
SPECIFICATIONS
– Continued on next page –
Inputs and outputs
LINE-1 IN
VIDEO IN, phono jack (1)
Input signal: 1 Vp-p, 75 ohms, unbalanced,
sync negative
AUDIO IN, phono jack (1) (ED1/ED4)
AUDIO IN, phono jack (2) (ED7/ED8)
Input level: 327 mVrms
Input impedance: more than 47 kilohms
LINE-2 IN (ED7/ED8)
VIDEO IN, phono jack (1)
Input signal: 1 Vp-p, 75 ohms, unbalanced,
sync negative
AUDIO IN, phono jack (2)
Input level: 327mVrms
Input impedane: more than 47 kilohms
LINE OUT
VIDEO OUT, phono jack (1)
Output signal: 1 Vp-p, 75 ohms, unbal-
anced, sync negative
AUDIO OUT, phono jack (1) (ED1/ED4)
AUDIO OUT, phono jack (2) (ED7/ED8)
Standard output: 327 mVrms
Load impedance; 47 kilohms
Output impedance: less than 10 kilohms
Timer section
Clock
Quartz locked
Timer indication
12-hour cycle
Timer setting
8 programs per month (max.)
Power back-up
Built-in self-charging capacitor
Back-up duration: up to 1 hour at a time
General
Power requirements
110 – 240 V AC, 50/60 Hz
Power consumption
19W (ED1/ED4)
22W (ED7/ED8)
Operating temperature
5 ˚C to 40 ˚C
Storage temperature
–20 ˚C to 60 ˚C
System
Format
VHS NTSC standard
Video recording system
Rotary head helical scanning FM system
Video heads
Double azimuth two heads
Video signal
NTSC color, EIA standards
Tape speed
SP: 33.35 mm/s
EP: 11.11 mm/s
LP: 16.67 mm/s, playback only
Maximum recording
playback time
8 hrs. in EP mode (with T-160 tape)
Fast-forward and rewind time
Approx. 3 min. (with T-120 tape)
Tuner section
Channel coverage
VHF 2 to 13
UHF 14 to 69
CATV A-8 to A-1, A to W, W+1 to W+84
Antenna
75-ohm antenna terminal for VHF/UHF
Ver 1.0 1998. 08

Sony SLV-ED1PL Specifications

General

Remote Control	Yes
Sound	Mono
Tuner	Yes
Power Consumption	18W
Type	VCR
Recording Speed	SP, LP
Playback Speed	SP, LP
Connections	Antenna
Recording Formats	PAL
Inputs	Antenna
Outputs	Composite video

Summary

Specifications

Inputs and outputs

Details video and audio input/output specifications, impedance, and levels.

Feature Difference

SAFETY CHECK-OUT

Procedures for safety checks after repair before releasing the unit to the customer.

1. DISASSEMBLY

SECTION 1 GENERAL

1-1. Getting Started

SECTION 2 DISASSEMBLY

2-1. UPPER CASE REMOVAL

2-9. CIRCUIT BOARDS LOCATION

SECTION 3 BLOCK DIAGRAMS

Introduction to the block diagrams of the VCR.

3-1. OVERALL BLOCK DIAGRAM

3-2. VIDEO1 BLOCK DIAGRAM

Block diagram of the Video 1 signal path.

3-3. VIDEO2 BLOCK DIAGRAM

3-4. SERVO/SYSTEM CONTROL BLOCK DIAGRAM

Block diagram for servo and system control.

3-5. AUDIO BLOCK DIAGRAM

3-6. TUNER BLOCK DIAGRAM

Block diagram of the tuner section.

3-7. MODE CONTROL BLOCK DIAGRAM

3-8. POWER BLOCK DIAGRAM

Block diagram of the power supply section.

SECTION 4 PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

4-1. FRAME SCHEMATIC DIAGRAM

Overall frame schematic diagram.

4-2. PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS

MA-323 (HEAD AMP) SCHEMATIC DIAGRAM

Schematic for the MA-323 Head Amplifier.

MA-323 (VIDEO, AUDIO) SCHEMATIC DIAGRAM

MA-323 (SYSTEM CONTROL) SCHEMATIC DIAGRAM

MA-323 (SERVO CONTROL) SCHEMATIC DIAGRAM

Schematic diagram for the servo control system.

MA-323 (Hi-Fi AUDIO) SCHEMATIC DIAGRAM

MA-323 (IO) SCHEMATIC DIAGRAM

Schematic diagram for the Input/Output section.

MA-323 (TUNER) SCHEMATIC DIAGRAM

MA-323 (MODE CONTROL) SCHEMATIC DIAGRAM

Schematic diagram for the mode control circuitry.

MA-323 (FL DRIVER) SCHEMATIC DIAGRAM

MA-323 (POWER SUPPLY) SCHEMATIC DIAGRAM

Schematic diagram for the power supply unit.

DS-80 (MODE CONTROL) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM

NK-11 (KOREAN STEREO) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM

DM-76 BOARD, MF-312 BOARD

HS-921SF/921SF1 (POWER SURRLY) PRINTED WIRING BOARD

SR-708 (POWER SUPPLY) PRINTED WIRING BOARD

SECTION 5 INTERFACE, IC PIN FUNCTION DESCRIPTION

Details on IC pin functions and interfaces between system blocks.

5-1. SYSTEM CONTROL – VIDEO BLOCK INTERFACE (MA-323 BOARD IC161)

5-2. SYSTEM CONTROL – SERVO PERIPHERAL CIRCUIT INTERFACE (MA-323 BOARD IC161)

Interface signals between system control and servo circuits.

5-3. SYSTEM CONTROL – MECHANISM BLOCK INTERFACE (MA-323 BOARD IC161)

5-4. SYSTEM CONTROL – AUDIO BLOCK INTERFACE (MA-323 BOARD IC161)

Interface signals for audio processing and control.

5-5. SERVO/SYSTEM/TIMER/TUNER CONTROL MICROPROCESSOR PIN FUNCTION (MA-323 BOARD IC161)

5-6. KOREAN STEREO PROCESSOR PIN FUNCTION (NK-11 BOARD IC1)

Pin function description for the Korean stereo processor IC.

SECTION 6 ERROR CODES

Table 6-1. Error Codes

SECTION 7 ADJUSTMENTS

7-1. MECHANICAL ADJUSTMENTS

Procedures for mechanical adjustments on the VCR.

7-2. ELECTRICAL ADJUSTMENTS

Detailed steps for electrical adjustments of various VCR circuits.

2-2. POWER SUPPLY ADJUSTMENT

2-3. SERVO SYSTEM Adjustment

2-4. AUDIO SYSTEM ADJUSTMENTS

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

2-4-2. Normal Audio System Adjustment

2-5. TUNER SYSTEM ADJUSTMENT

SECTION 8 REPAIR PARTS LIST

8-1. EXPLODED VIEWS

Exploded diagrams showing the assembly of VCR components.

8-1-1. FRONT PANEL AND CABINET ASSEMBLIES (ED1)

8-1-2. CHASSIS ASSEMBLY (ED1)

8-1-3. FRONT PANEL AND CABINET ASSEMBLIES (ED4/ED7/ED8)

8-1-4. CHASSIS ASSEMBLY (ED4/ED7/ED8)

8-1-5. MECHANISM CHASSIS ASSEMBLY (1)

8-1-6. MECHANISM CHASSIS ASSEMBLY (2)

8-1-7. MECHANISM CHASSIS ASSEMBLY (3)

8-2. ELECTRICAL PARTS LIST

List of electrical components including part numbers and descriptions.

1. PREPARATION FOR MECHANISM CHECKS, ADJUSTMENTS AND REPLACEMENT

1-1. LOADING AND THREADING PROCEDURE WHEN THE POWER TURNS OFF

1-1-1. LOADING AND THREADING PROCEDURE WITH HANDS

1-2. UNLOADING AND UNTHREADING PROCEDURE WHEN THE POWER TURNS OFF

1-2-1. UNLOADING AND UNTHREADING PROCEDURE WITH HANDS

2. PERIODIC CHECK AND REPLACEMENT

3. MAINLY MECHANICAL PARTS REPLACEMENT

3-1. FL COMPLETE ASSEMBLY

3-2. DRUM ASSEMBLY

3-3. PINCH PRESS BLOCK ASSEMBLY, TG8 ASSEMBLY AND THEIR PERIPHERY

3-4. RUBBER BELT, CAPSTAN MOTOR

3-5. ACE HEAD BLOCK ASSEMBLY

3-6. FEH ASSEMBLY

3-7. REC PROOF LEVER

3-8. RVS BRAKE ARM ASSEMBLY

3-9. MAIN (S) AND MAIN (T) BRAKE ASSEMBLIES

3-12. FL SLIDER BLOCK ASSEMBLY

3-13. PINCH TRANSMISSION GEAR, CAM GEAR, WORM WHEEL

3-14. CAPSTAN BRAKE ASSEMBLY, CAPSTAN BRAKE SHAFT

3-18. LOADING (T) AND LOADING (S) GEAR ASSEMBLIES

3-19. PULLEY GEAR ASSEMBLY, CLUTCH GEAR

3-23. DRUM BASE, HC ROLLER BLOCK ASSEMBLY

3-24. SHUTTLE (S) AND SHUTTLE (T) BLOCK ASSEMBLIES

3-25. TG1 ASSEMBLY, REEL (S) TABLE

3-27. LUMINOUS PLATE

4. ADJUSTMENT

Section dedicated to various adjustment procedures for the VCR.

4-1. TAPE PATH ADJUSTMENT

4-1-1. TAPE TUNER REGULATOR (TG1) POSITION / TENSION ADJUSTMENT (FIG. 4-1)

4-1-2. CHECKING THE TENSION AND TORQUE

4-1-3. X-VALUE ADJUSTMENT (Using the tape having the version No.)

4-1-4. HEIGHT ADJUSTMENT OF GUIDE ROLLERS NO. 3 AND NO. 5

4-1-5. ACE HEAD ASSEMBLY HEIGHT AND AZIMUTH ADJUSTMENT

4-1-6. X-VALUE FINE ADJUSTMENT

4-1-7. HEIGHT ADJUSTMENT OF GUIDE ROLLER NO. 8

4-1-8. CHECKING THE LINEARITY AND FLUCTUATION OF THE RF OUTPUT

5. EXPLODED VIEWS

Exploded diagrams of the VCR mechanism components.

5-1. MECHANISM DECK-1

5-2. MECHANISM DECK-2

5-3. MECHANISM DECK-3