Sony SLV-SE850 User Manual

AEP Model
SLV-SE850/SF900/SF950/SF990
UK Model
SLV-SE850/SF900/SF990
SERVICE MANUAL
VIDEO CASSETTE RECORDER
SR MECHANISM
SLV-SE850/SF900/SF950/SF990
RMT-V259M/V259N/V259P/V259Q/V260C/V260D
G
Photo : SLV-SE990
RMT-V260D
Refer to the SERVICE MANUAL of VHS
MECHANICAL ADJUSTMENT
for
MECHANICAL ADJUSTMENTS. (9-921-647-11)
SPECIFICATIONS
The abbreviations of SE850/SF900/SF950/SF990 contained in this service manual
are indicated when these models are common to all their corresponding models as
given below.
Abbreviated models name
All models name
SLV-
SE850
SE850B
SE850D
SE850E
SE850G
SF900
SF900B
SF900D
SF900E
SF900G
SF950
SF950N
SF990
SF990B
SF990D
SF990E
SF990G
System
Channel coverage
PA
SF950/SF990D,E,G
L (B/G): SE850D,E,G/SF900D,E,G/
VHF E2 to E12
VHF Italian channel A to H
UHF E21 to E69
CATV S01 to S05, S1 to S20
HYPER S21 to S41
VHF F2 to F10
UHF F21 to F69
CATV B to Q
HYPER S21 to S41
R
SECAM (L): SE850B/SF900B/SF990B
F output signal
UHF channels 21 to 69
Aerial out
75-ohm asymmetrical aerial socket
Tape speed
SP: PAL 23,39 mm/s (recording/playback)
NT
SECAM 23,39mm/s (recording/playback)
(SE850B/SF900B/SF990B only)
SECAM 11,70mm/s (recording/playback)
(SE850B/SF900B/SF990B only)
SC 33,35 mm/s (playback only)
LP: PAL11,70 mm/s (recording/playback)
NTSC 16,67 mm/s (playback only)
EP: NTSC 11,12 mm/s (playback only)
Maximum recording/playback time
10 hrs. in LP mode (with E300 tape)
Fast-forward and rewind time
Approx. 1 min. (with E180 tape)
Inputs and outputs
Li INE-1 (TV)
21-pin
Video input: pin 20
Audio input: pins 2 and 6
Video output: pin 19
Audio output: pins 1 and 3
DECODER/t LINE-3 IN (SE850/SF900/SF950 only)/
LINE-4 IN (SF990 only)
21-pin
Video input: pin 20
Audio input: pins 2 and 6
LINE-2 IN
VIDEO IN, phono jack (1)
Input signal: 1 Vp-p, 75 ohms, unbalanced, sync
negative
AUDIO IN, phono jack (2)
Input level: 327 mVrms
Input impedance : more than 47 kilohms
LINE-3 IN (SF990 only)
VIDEO IN, phono jack (1)
Input signal: 1 Vp-p, 75 ohms, unbalanced, sync
negative
AUDIO IN, phono jack (2)
Input level: 327 mVrms
Input impedance : more than 47 kilohms
LINE-2 OUT
VIDEO OUT, phono jack (1)(SF950/SF990 only)
Output signal: 1 Vp-p, 75 ohms, unbalanced, sync
negative
AUDIO OUT, phono jack (2)
Rated output level: 327 mVrms
Load impedance: 47 kilohms
Output impedance: less than 10 kilohms
— Continued on next page —

Sony SLV-SE850 Specifications

General

Type	VCR
Brand	Sony
Model	SLV-SE850
Video Format	VHS
Recording Speed	SP, LP, EP
Playback Speeds	SP, LP, EP
Tuner	Yes
Number of Heads	4
Hi-Fi Stereo	Yes
Remote Control	Yes
Clock	Yes
Timer Recording	Yes
Inputs	Composite
Outputs	Composite, RF

Summary

Specifications Overview

General Information and Safety

Safety-Related Component Warning

Highlights critical components requiring careful replacement.

Safety Check-out Procedure

Outlines post-repair safety verification steps.

Service Mode Operations

Error Code Indication

Explains how error codes are displayed and their meanings.

EEPROM Data Input Procedure

Steps for inputting EEPROM data after replacement.

General VCR Operations

Basic VCR Operations

Steps to play back a video cassette tape.

Additional VCR Operations

Features like shuttle search, synchronized recording, and timer management.

Editing and Audio Features

Performing tape editing tasks and audio dubbing.

SmartFile Functionality

Introduction to tape organization and programme recording using SmartFile.

Troubleshooting Guide

Cross-references problems with relevant manual sections.

Section 2 Disassembly Instructions

Section 3 Block Diagrams

3-1. OVERALL BLOCK DIAGRAM (1/2)

Overall system connectivity and signal flow.

3-2. VIDEO BLOCK DIAGRAM (1/2)

Details the video signal processing path.

3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM (1/2)

Illustrates servo and system control interfaces.

3-4. AUDIO BLOCK DIAGRAM

Depicts the audio signal path and processing.

3-5. SMART FILE BLOCK DIAGRAM

Outlines Smart File data management.

3-6. POWER BLOCK DIAGRAM (1/2)

Shows power supply distribution and regulation.

Section 4 Printed Wiring Boards and Schematic Diagrams

4-1. FRAME SCHEMATIC DIAGRAM

Overall schematic overview of the VCR's circuitry.

MA-388 Board Schematics (Parts 1-8)

Detailed schematics for the MA-388 board sections.

RP-238 Board Schematics and Layout

Schematics and component layout for the RP-238 bias board.

FR-169 Board Schematics and Layout

Schematics and component layout for the FR-169 indicator board.

DM-95 Board Schematics and Layout

Schematics and component layout for the DM-95 user function board.

SE-109 Board Schematics and Layout

Schematics and component layout for the SE-109 SECAM board.

Smart File and Antenna Board Layouts

Component layouts for Smart File and antenna boards.

Smart File Board Schematics

Schematic diagrams for the ML-21 Smart File board.

JK-195 Board Schematics and Layout

Power Block Board Schematics and Layout

Section 5 Interface, IC Pin Function Description

Section 6 Adjustments

6-1. MECHANICAL ADJUSTMENT

6-2. ELECTRICAL ADJUSTMENT

2-2. POWER SUPPLY CHECK

Verifying critical voltage levels from the power supply.

2-3. SYSTEM CONTROL SYSTEM CHECK

Verifying system control signals and clock oscillation.

2-4. SERVO SYSTEM CHECK

Adjusting RF and Hi-Fi switching positions for tape output.

2-5. VIDEO SYSTEM CHECK

Confirming playback video signal and sync AGC levels.

2-6. AUDIO SYSTEM ADJUSTMENT

Adjusting Hi-Fi audio system parameters.

2-6-1. HiFi Audio Frequency Response Check

2-6-1-5. Audio PB Level Check

2-6-2. Normal Audio System Adjustment

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

Section 7 Repair Parts List

7-2. ELECTRICAL PARTS LIST