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Sharp 13VT-L200 User Manual

Sharp 13VT-L200
106 pages
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13VT-L200
SERVICE MANUAL
CONTENTS
Page
» IMPORTANT SERVICE SAFETY PRECAUTION .................................................................................... 2
» ELECTRICAL SPECIFICATIONS ............................................................................................................ 6
» LOCATION OF USER’S CONTROL ........................................................................................................ 7
» DISASSEMBLY AND REASSEMBLY ......................................................................................................9
» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................. 12
» PRECAUTIONS IN REASSEMBLING ................................................................................................... 17
» FUNCTION OF MAJOR MECHANICAL PARTS.................................................................................... 18
» ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS ...................................20
» ADJUSTMENT OF THE VCR ELECTRICAL CIRCUITRY .................................................................... 40
» TROUBLESHOOTING ........................................................................................................................... 43
» CHASSIS LAYOUT ................................................................................................................................ 56
» BLOCK DIAGRAM OF TV SECTION.....................................................................................................58
» BLOCK DIAGRAM OF VCR SECTION ................................................................................................. 60
» OVERALL SCHEMATIC DIAGRAM.......................................................................................................70
» DESCRIPTION OF SCHEMATIC DIAGRAM......................................................................................... 72
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................... 84
» REPLACEMENT PARTS LIST............................................................................................................... 88
» PACKING OF THE SET ....................................................................................................................... 105
In the interests of user-safety (Required by safety regulations in some countries ) the set should be restored to its
original condition and only parts identical to those specified should be used.
S29D413VTL200
MODEL
TV/VCR COMBINATION
Chassis No. B97B
SHARP CORPORATION
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
13VT-L200
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Sharp 13VT-L200 Specifications

General IconGeneral
Screen Size13 inches
Aspect Ratio4:3
VCR TypeVHS
Audio OutputMono
Product TypeTV VCR Combo
TunerAnalog
VCRYes
Display TypeCRT
Remote ControlYes
InputsComposite
OutputsComposite

Summary

Important Service Safety Precautions

Servicing High Voltage System and Picture Tube

Procedures for safely servicing the high voltage system and picture tube.

X-Radiation and High Voltage Limits

Guidelines for managing X-radiation and high voltage limits during servicing.

Pre-Return Receiver Safety Checks

Safety checks before returning the receiver to the user, focusing on fire and shock hazards.

Safety Notice on Component Characteristics

General safety information regarding special safety-related parts and their characteristics.

Electrical Specifications

Location of User Controls

Description of Front and Rear Controls

Identifies and describes the location of controls on the front and rear of the unit.

Remote Control Button Layout

Details the buttons and functions of the remote control unit.

Remote Control Battery Installation

Instructions for installing batteries in the remote control.

Disassembly and Reassembly Procedures

Installation and Service Instructions

Circuit Protection Details

Details the receiver's circuit protection mechanisms and fuse details.

X-Radiation Protector Circuit Test

Procedures for testing the X-radiation protector circuit for proper operation.

High Voltage Output Check

Steps to check and verify the high voltage output within safe limits.

Reassembly Precautions

Cassette Controller Mounting

Steps and precautions for mounting the cassette controller during reassembly.

Mechanism to PWB Coupling

Instructions for connecting the VCR mechanism to the main printed wiring board.

Major Mechanical Parts Functions

Top View Mechanical Parts Description

Identifies and explains the function of major mechanical parts from the top view.

Bottom View Mechanical Parts Description

Identifies and explains the function of major mechanical parts from the bottom view.

VCR Electrical Circuitry Adjustments

VCR Test Points Layout

Identifies key test points on the main unit for VCR circuitry adjustments.

Servo Circuit Adjustments Overview

Covers adjustments related to servo circuits, including head switching and tracking.

Still Picture Vertical Sync Adjustment

Procedure for adjusting vertical sync for still picture playback.

Troubleshooting Guides

VCR Troubleshooting Flowcharts

Comprehensive flowcharts for diagnosing VCR section issues, including power, cassette, drum, and servo systems.

TV Troubleshooting Flowcharts

Flowcharts for diagnosing TV section problems, covering power, picture, sound, vertical scan, and remote control.

Chassis Layout Diagrams

PWB-B (CRT Unit) Layout

Diagram showing the layout of Printed Wiring Board B.

PWB-D (Front AV Unit) Layout

Diagram showing the layout of Printed Wiring Board D.

PWB-C (Power Unit) Layout

Diagram showing the layout of Printed Wiring Board C.

VCR Section Block Diagrams

Overall VCR Block Diagram

Shows the general functional blocks of the VCR section.

VCR Servo Process Block Diagram

Illustrates the servo control system blocks within the VCR.

VCR System Control Block Diagram

Details the system control and interface blocks of the VCR.

VCR Video Signal Flow Block Diagram

Maps the flow of video signals through the VCR section.

VCR Audio Block Diagram

Illustrates the audio processing signal paths within the VCR.

Overall Schematic Diagram

Schematic Diagram Description

Schematic Diagram Notes

Provides notes on reading resistance, capacitance, and component notations.

Voltage Measurement Conditions

Specifies conditions for measuring DC voltages in the unit.

Waveform Measurement Conditions

Outlines conditions and procedures for measuring signal waveforms.

Signal Waveform Examples

Displays various signal waveforms and their characteristics at different test points.

Printed Wiring Board Assemblies

PWB-B: CRT Unit (Wiring Side)

Shows the wiring side layout of the CRT unit's printed wiring board.

PWB-D: Front AV Unit (Wiring Side)

Displays the wiring side layout of the Front AV unit's printed wiring board.

PWB-C: Power Unit (Wiring Side)

Illustrates the wiring side layout of the POWER unit's printed wiring board.

PWB-A: Main Unit (Wiring Side)

Shows the wiring side layout of the MAIN unit's printed wiring board.

PWB-A: Main Unit (Chip Parts Side)

Displays the chip parts side layout of the MAIN unit's printed wiring board.

Parts List and Ordering Information

Picture Tube Parts

Lists replacement parts for the picture tube assembly.

PWB-A: Main Unit Parts

Lists components for the Main Unit (PWB-A), including ICs, transistors, diodes, etc.

PWB-C: Power Unit Parts

Lists components for the Power Unit (PWB-C).

PWB-B: CRT Unit Parts

Lists components for the CRT Unit (PWB-B).

Mechanism Chassis Parts

Lists all mechanical parts and their references for the mechanism chassis.

Cassette Housing Control Parts

Lists parts related to the cassette housing control mechanism.

Supplied Accessories List

Lists items supplied with the product that are not replacement parts.

Packing Parts List

Lists materials used for packing the product.

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