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Toshiba MV13L3 User Manual

Toshiba MV13L3
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SERVICE MANUAL
COLOR TELEVISION/
VIDEO CASSETTE RECORDER
FILE NO. 140-200114
MV13L3
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Toshiba MV13L3 Specifications

General IconGeneral
BrandToshiba
ModelMV13L3
CategoryTV
LanguageEnglish

Summary

SERVICING NOTICES ON CHECKING

1. KEEP THE NOTICES

Guides on maintaining notices and labels for safety.

2. AVOID AN ELECTRIC SHOCK

Warning about high voltage parts and avoiding electric shock.

3. USE THE DESIGNATED PARTS

Emphasizes using parts with specific safety characteristics for replacements.

4. PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING

Instruction to return parts and wires to their original positions after assembly.

5. TAKE CARE TO DEAL WITH THE CATHODE-RAY TUBE

Cautionary advice for handling the cathode-ray tube safely.

6. AVOID AN X-RAY

Guidance on avoiding X-ray emission by using correct parts and not modifying circuits.

7. PERFORM A SAFETY CHECK AFTER SERVICING

Procedure for ensuring safety and proper function after repair work.

HOW TO ORDER PARTS

1. MODEL NUMBER and VERSION LETTER

Information required for ordering parts, including model and version.

2. PART NO. and DESCRIPTION

Details needed for parts ordering, referencing the service manual.

GENERAL SPECIFICATIONS

G-1 TV System

Details of the television system specifications, including CRT and display.

G-2 VCR System

Specifications related to the VCR system, including heads and tape format.

G-3 Tuning System

Information about the tuning system, channel reception, and frequency.

G-4 Signal

Specifications for audio and video signals, including input and output levels.

G-5 Power

Power supply details, consumption, and protection features.

G-6 Regulation

Regulatory compliance information (UL, FCC) and safety standards.

G-7 Temperature

Operating and storage temperature ranges for the device.

G-8 Operating Humidity

Specification for the operating humidity range.

GENERAL SPECIFICATIONS

G-9 On Screen Menu Display

Features and functions available through the on-screen menu system.

G-10 OSD Language

Supported languages for the On-Screen Display (OSD).

G-11 Clock, Timer and Timer Back-up

Functionality related to clock, timer settings, and backup.

GENERAL SPECIFICATIONS

G-12 Remote Control

Specifications of the remote control unit, including keys and format.

G-13 Features

Various operational features of the product, like auto functions and special modes.

GENERAL SPECIFICATIONS

G-14 Accessories

List of included accessories and their specifications.

G-15 Interface

Details about input/output interfaces and connectors.

G-16 Set Size

Physical dimensions of the product unit.

G-17 Weight

Weight specifications for the product.

GENERAL SPECIFICATIONS

G-18 Carton

Information regarding the product's carton and packaging.

G-19 Cabinet Material

Details about the materials used for the product's cabinet.

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS

Procedures for removing major mechanical parts and printed circuit boards.

1-1: BACK CABINET

Step-by-step guide for removing the back cabinet.

1-2: CRT PCB

Instructions for removing the CRT printed circuit board.

1-3: TV/VCR BLOCK

Guide for removing the combined TV/VCR block.

1-4: DECK CHASSIS AND SYSCON PCB

Steps to remove the deck chassis and the system control PCB.

DISASSEMBLY INSTRUCTIONS

2. REMOVAL OF DECK PARTS

Procedures for disassembling various parts of the VCR deck mechanism.

2-1: TOP BRACKET

Instructions for removing the top bracket of the deck.

2-2: FLAP LEVER/TAPE GUIDE R

Guide for removing the flap lever and right tape guide.

2-3: TAPE GUIDE L

Steps for removing the left tape guide.

2-4: CASSETTE HOLDER ASS'Y

Procedure for removing the cassette holder assembly.

2-5: CASSETTE SIDE L/R

Instructions for removing the left and right cassette sides.

DISASSEMBLY INSTRUCTIONS

2-6: LINK UNIT

Guide for removing the link unit assembly.

2-7: LOADING MOTOR ASS'Y

Steps to remove the loading motor assembly.

2-8: SENSOR COVER L3

Procedure for removing the sensor cover L3.

2-9: TENSION ASS'Y

Instructions for disassembling the tension assembly.

2-10: T BRAKE ASS'Y

Guide for removing the T brake assembly.

DISASSEMBLY INSTRUCTIONS

2-11: S REEL/T REEL

Steps for removing the S reel and T reel components.

2-12: PINCH ROLLER BLOCK/P5-3 ARM ASS'Y

Procedure for removing pinch roller block and P5-3 arm assembly.

2-13: A/C HEAD

Instructions for removing the A/C head assembly.

2-14: FE HEAD (RECORDER ONLY)

Guide for removing the FE head, specific to recorders.

DISASSEMBLY INSTRUCTIONS

2-15: AHC ASS'Y/CYLINDER UNIT ASS'Y

Steps to remove the AHC assembly and cylinder unit.

2-16: CAPSTAN DD UNIT

Procedure for removing the capstan DD unit.

2-17: MIDDLE GEAR/MAIN CAM

Instructions for removing the middle gear and main cam.

2-18: CLUTCH ASS'Y

Guide for disassembling the clutch assembly.

DISASSEMBLY INSTRUCTIONS

2-19: LOADING GEAR S/T ASS'Y

Steps for removing the loading gear S/T assembly.

2-20: INCLINED S/T ASS'Y

Procedure for removing the inclined S/T assembly.

DISASSEMBLY INSTRUCTIONS

3. REMOVAL OF ANODE CAP

Detailed instructions for safely removing and installing the anode cap.

KEY TO ABBREVIATIONS

SERVICE MODE LIST

SERVICE MODE LIST

Explains how to enter and use various service modes for repair and adjustment.

PREVENTIVE CHECKS AND SERVICE INTERVALS

CONFIRMATION OF USING HOURS

How to check the total power-on and play/record hours of the unit.

PREVENTIVE CHECKS AND SERVICE INTERVALS

CLEANING

Procedures for cleaning key components like audio heads, tape path, and cylinder.

NOTE FOR THE REPLACING OF MEMORY IC

SERVICING FIXTURES AND TOOLS

PREPARATION FOR SERVICING

Instructions on how to use servicing fixtures and prepare for maintenance.

MECHANICAL ADJUSTMENTS

1. CONFIRMATION AND ADJUSTMENT

General procedures for confirming and adjusting mechanical parts.

1-1: CONFIRMATION AND ADJUSTMENT OF REEL DISK HEIGHT

Steps to confirm and adjust the height of the reel disk.

1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION

Procedure to confirm and adjust the tension post position.

1-3: CONFIRMATION OF PLAYBACK TORQUE AND BACK TENSION TORQUE DURING PLAYBACK

How to confirm playback and back tension torque during operation.

MECHANICAL ADJUSTMENTS

1-4: CONFIRMATION OF VSR TORQUE

Procedure to confirm the VSR torque.

1-5: CONFIRMATION OF REEL BRAKE TORQUE

Steps to confirm the reel brake torque for S and T reels.

2. CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM

Procedures for confirming and adjusting the tape running mechanism.

2-1: GUIDE ROLLER

Instructions for adjusting the guide roller.

MECHANICAL ADJUSTMENTS

2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/CONTROL HEAD

Steps to confirm and adjust the audio/control head.

2-3: TAPE RUNNING ADJUSTMENT (X VALUE ADJUSTMENT)

Procedure for tape running adjustment, specifically X value.

MECHANICAL ADJUSTMENTS

3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE

Diagram showing the location of parts for mechanism adjustment.

ELECTRICAL ADJUSTMENTS

1. BEFORE MAKING ELECTRICAL ADJUSTMENTS

General precautions and preparation before performing electrical adjustments.

On-Screen Display Adjustment

How to adjust settings displayed on the screen.

2. BASIC ADJUSTMENTS (VCR SECTION)

Core adjustments for the VCR section of the unit.

2-1: PG SHIFTER

Procedure for adjusting the PG shifter automatically and manually.

ELECTRICAL ADJUSTMENTS

2-2: VCO FREERUN

Steps to adjust the VCO to its free-run state.

2-3: RF AGC

Procedure for adjusting the RF Automatic Gain Control.

2-4: CONSTANT VOLTAGE

How to set and adjust constant voltage levels.

2-5: CUT OFF

Adjustment procedure for the cutoff settings.

2-6: WHITE BALANCE

Steps for adjusting the white balance of the display.

2-7: FOCUS

Procedure to adjust the focus of the display.

2-8: HORIZONTAL PHASE

How to adjust the horizontal phase of the display.

2-9: VERTICAL SHIFT

Steps to adjust the vertical position of the display.

2-10: VERTICAL SIZE

Procedure for adjusting the vertical size of the display.

2-11: SUB BRIGHTNESS

Steps for fine-tuning the brightness setting.

2-12: SUB CONTRAST

Procedure for fine-tuning the contrast setting.

ELECTRICAL ADJUSTMENTS

2-13: SUB TINT

Steps for adjusting the tint color setting.

2-14: SUB COLOR

Procedure for adjusting the color saturation.

2-15: OSD HORIZONTAL

How to adjust the horizontal position of the OSD.

ELECTRICAL ADJUSTMENTS

4. PURITY AND CONVERGENCE ADJUSTMENTS

Procedures for adjusting screen purity and color convergence.

4-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)

Initial steps for static convergence adjustment.

4-2: PURITY

Procedure for adjusting the color purity of the display.

4-3: STATIC CONVERGENCE

Further steps for static convergence adjustment.

4-4: DYNAMIC CONVERGENCE

Procedure for adjusting dynamic convergence settings.

TV BLOCK DIAGRAM

Y/C/AUDIO/HEAD AMP BLOCK DIAGRAM

MICON/OPERATION/IN/OUT/DECK BLOCK DIAGRAM

Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM (SYSCON PCB)

MICON SCHEMATIC DIAGRAM (SYSCON PCB)

IN/OUT SCHEMATIC DIAGRAM (SYSCON PCB)

CHROMA/IF SCHEMATIC DIAGRAM (SYSCON PCB)

SOUND AMP SCHEMATIC DIAGRAM (SYSCON PCB)

POWER SCHEMATIC DIAGRAM (SYSCON PCB)

DEFLECTION SCHEMATIC DIAGRAM (SYSCON PCB)

CRT SCHEMATIC DIAGRAM (CRT PCB)

OPERATION SCHEMATIC DIAGRAM (OPERATION PCB)

DECK SCHEMATIC DIAGRAM (DECK PCB)

INTERCONNECTION DIAGRAM

WAVEFORMS

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