Sony POWER TRILOGIC SLV-L79HF CL Service Manual
Sony POWER TRILOGIC SLV-L79HF CL Service Manual

Sony POWER TRILOGIC SLV-L79HF CL Service Manual

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SLV-L49/L52/L59/L69HF/L72HF/L79HF/L89HF/X55/X66HF
SERVICE MANUAL
j
S MECHANISM
Refer to the SERVICE MANUAL of VHS
MECHANICAL ADJUSTMENT
MECHANICAL ADJUSTMENTS. (9-921-647-11)
System
Format
VHS NTSC standard
Video recording system
Rotary head helical scanning
FM system
Video heads
Double azimuth four 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
9hrs. in EP mode
(with T-180 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
75 Ω antenna terminal for
Antenna
VHF/UHF
Inputs and outputs
LINE-1 IN/LINE-2 IN
VIDEO IN, phono jack
(1 each)
Input signal : 1 Vp-p, 75 Ω,
unbalanced, sync negative
AUDIO IN, phono jacks
(1 each)(SLV-L49MX,
L52PA/PC, L59CL/CS/PR/
VZ and X55 MX),
(2 each)(SLV-L69HF MX,
L72HF PA/PC,
L79HF CL/CS/PR/VZ,
L89HF CL/CS/MX/VZ and
X66HF MX)
Input level : 327 mVrams
Input impedance : more
than 47 kilohms
MICROFILM
Photo: SLV-L89HF
RMT-V267
for
SPECIFICATIONS
LINE OUT
VIDEO OUT, phono jack (1)
Output signal : 1 Vp-p, 75 Ω
unbalanced, sync negative
AUDIO OUT, phono jacks (1
each)(SLV-L49MX,
L52PA/PC, L59CL/CS/PR/VZ
and X55 MX),
(2 each)(SLV-L69HF MX,
L72HF PA/PC,
L79HF CL/CS/PR/VZ, L89HF
CL/CS/MX/VZ and X66HF MX)
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 8 hours
at a time
General
Power requirements
110 V AC to 240 V AC, 50/60 Hz
(SLV-L59CL/CS/PR, L79HF CL/
CL/PR and L89HF CL/CS)
120 V AC, 60 Hz
(SLV-L49 MX, L52 PA/PC, L59
VZ, X55 MX, L69HF MX,
L72HF PA/PC, L79HF VZ,
L89HF MX/VZ and X66HF MX)
Mexican Model
SLV-L49/L69HF/L89HF/X55/X66HF
Panama Model
Ecuador Model
Colombia Model
Chilean Model
Venezuelan Model
Puerto Rico Model
Power consumption
Operating temperature 5°C to 40°C (41°F to 104°F)
Storage temperature
Dimensions
Mass
Supplied accessories
Remote commander (1)
Size AA (R6) batteries (2)
75 Ω coaxial cable with F-type connectors (1)
Audio/video cable (3 phono to 3 phono) (1)(SLV-
L79HF CL/CS/PR/VZ, L89HF CL/CS/MX/VZ and
Plug adaptor (1)(SLV-L59 CL/CS/PR, L79HF CL/
Design and specifications are subject to change
without notice
VIDEO CASSETTE RECORDER
RMT-V267/V268
SLV-L52/L72HF
Bolivia Model
Peru Model
SLV-L59/L79HF/L89HF
SLV-L59/L79HF
18 W
(SLV-L49MX, L52PA/PC,
L59CL/CS/PR/VZ and X55
MX)
19 W
(SLV-L69HF MX, L72HF
PA/PC, L79HF CL/CS/PR/
VZ,
L89HF CL/CS/MX/VZ and
X66HF MX)
-20°C to 60°C (-4°F to
140°F)
Approx. 335 × 96 × 289 mm
(w/h/d)
including projecting parts
and controls
Aoorox. 3.7 kg
L69HF MX, L72HF PA/PC,
X66HF MX only)
CS/PR and L89HF CL/CS
only)

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Summarization of Contents

Specifications
System and Tape Specifications
Details on VCR system format, video recording, and tape speed parameters.
Tuner and Antenna Specifications
Channel coverage and antenna terminal details for the VCR.
Input/Output and Timer Specifications
Specifications for audio/video inputs/outputs and timer functions.
Power Consumption and Dimensions
Information on power requirements, consumption, and device dimensions.
Safety Information
Safety-Related Component Warnings
Critical safety warnings for components vital to operation.
Safety Check-out Procedure
Post-repair safety checks to ensure proper and safe operation.
Error Code Indication
Error Code List
List of error codes and their corresponding meanings and display formats.
Mode Code Definitions
Explanation of mode codes used in conjunction with error indications.
SECTION 1 GENERAL
Parts and Controls Overview
Identification of VCR parts and controls, including remote commander.
Initial Setup: Unpacking and Connections
Guidance on unpacking the VCR and establishing necessary connections.
Basic Configuration: Language, Clock, Channels
Steps for setting VCR language, clock, and preset channels.
Tape Playback Operations
Instructions for playing tapes, including various playback speeds and search functions.
Recording TV Programs
Procedures for recording TV programs, including timer-based recording.
Advanced Operational Features
Details on search functions, timer settings, picture adjustments, and menu options.
SECTION 2 DISASSEMBLY
Upper Case and Panel Assembly
Procedure for removing the upper case and front panel assembly.
Key Circuit Boards Identification
Identification and removal of main circuit boards like DS-84, DI-70, JK-168, and MA-341.
Rear Panel and Mechanism Deck Disassembly
Steps for disassembling the rear panel and the mechanism deck.
Internal Views and Component Location
Illustrations of internal VCR components and circuit board locations.
SECTION 3 BLOCK DIAGRAMS
Overall System Block Diagram
A comprehensive block diagram showing the VCR's main functional units.
Functional Block Diagrams
Detailed block diagrams for Video, Servo/System Control, Audio/Tuner, and Power systems.
SECTION 4 PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Frame Schematic Diagram
The overall frame schematic diagram showing board interconnections.
MA-341 Board Schematics and Wiring Diagrams
Detailed schematic diagrams and printed wiring boards for the MA-341 board.
Other Board Schematics and Wiring Diagrams
Schematics and wiring diagrams for DI-70, DS-84, JK-168, and AR-20 boards.
SECTION 5 INTERFACE, IC PIN FUNCTION DESCRIPTION
System Control Interface Descriptions
Interface details between System Control and various VCR blocks.
Microprocessor Pin Functions
Detailed pin function descriptions for the VCR's microprocessor.
SECTION 6 ADJUSTMENTS
Mechanical Adjustments
Procedures for performing mechanical adjustments on the VCR.
Electrical Adjustment Preparation
Equipment required and connection setup for electrical adjustments.
System Checks and Adjustments
Procedures for power supply checks, servo, and audio system adjustments.
Specific Electrical Adjustments
Detailed steps for RF switching, Hi-Fi, and normal audio system adjustments.
Adjusting Parts Location Diagram
Diagram showing the location of parts relevant to VCR adjustments.
SECTION 7 REPAIR PARTS LIST
Exploded Views
Exploded diagrams illustrating VCR components for repair identification.
Electrical Parts Lists by Board
Comprehensive lists of electrical parts categorized by VCR board.

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