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Akai CFTD2052

Akai CFTD2052
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SERVICE MANUAL
CFTD2052
Design and specifications are subject to change without notice.
ORIGINAL
MFR'S VERSION A
LCD COLOR TELEVISION/DVD VIDEO PLAYER
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Akai CFTD2052 Specifications

General IconGeneral
Screen Size20 inches
Display TechnologyLCD
Built-in DVD PlayerYes
Audio OutputStereo
Power Consumption45W
DVD FormatsDVD, CD, CD-R, CD-RW, DVD-R, DVD-RW
InputsComposite, S-Video, RF

Summary

Caution and Servicing Preparation

Preparation of Servicing

Prepares for servicing, focusing on static electricity protection for laser diodes.

Servicing Notices and Parts Ordering

Servicing Notices on Checking

Important notices and checks to perform before and after servicing the unit.

Avoid Electric Shock and Use Designated Parts

Warnings about high voltage, correct parts usage, and safety during repair.

Safety Checks After Servicing

Procedures for safety checks, including insulation resistance tests.

How to Order Parts

Information required when ordering replacement parts for the unit.

Important Safeguards and Precautions

Read, Retain Instructions, and Heed Warnings

Importance of reading, keeping, and following all safety and operating instructions.

Cleaning, Attachments, and Water Precautions

Guidance on cleaning, using recommended attachments, and avoiding water exposure.

Power Sources, Grounding, and Ventilation

Information on correct power sources, grounding, and ensuring proper ventilation.

Cord Protection, Lightning, Overloading, and Entry Safety

Safety measures for power cords, lightning, outlets, and preventing object entry.

Outdoor Antenna Grounding and Servicing Guidelines

Grounding for antennas and when to seek qualified service personnel.

Replacement Parts and Post-Service Safety Checks

Ensuring correct replacement parts and performing safety checks after repairs.

Mounting, Heat, Connecting, and Volume Safety

Precautions for unit placement, connections, and volume adjustments.

Sound Distortion, Headphones, Laser Beam, and Disc Safety

Warnings about sound quality, headphone use, laser beams, and disc handling.

Disc Removal and Parental Control

Disc Removal Method at No Power Supply

Procedure for removing a disc when the unit has no power.

Parental Control Password Cancellation

Step-by-step guide to cancel the 4-digit parental control password.

General Specifications Overview

TV System Specifications

Details on LCD size, type, pixels, view range, color system, speaker, and sound output.

DVD System Specifications

Details on color system, disc type, loading system, playback time, and search speed.

Tuning System Specifications

Information on broadcasting system, tuner, intermediate frequency, and preset channels.

Signal and Power Specifications

Details on signal levels, consumption, protection, and standby power.

Regulation, Temperature, and Humidity Specifications

Compliance, temperature ranges, and operating humidity limits.

On-Screen Display (TV) Features

TV on-screen display features like setup, picture, audio, and tuning.

On-Screen Display (DVD) and Timer Features

DVD OSD features, parental controls, and timer settings.

Remote Control and DVD Features

Remote control details and extensive DVD playback features.

CATV Features and Interface Connections

CATV functions, signal inputs, and front/rear interface details.

Accessories, Set Size, and Weight

Included accessories, physical dimensions, and unit weight.

Carton, Packaging, Material, and Environmental Details

Specifications for packaging, materials, and environmental compliance.

Disassembly Instructions

Removal of Mechanical Parts and PC Boards

Step-by-step guide for removing mechanical parts and PC boards from the unit.

Removal of DVD Deck Parts

Instructions for disassembling various components of the DVD deck mechanism.

Removal and Installation of Flat Package IC

Procedures for removing and installing flat package ICs using desoldering equipment.

Service Modes and EEPROM Replacement

Service Mode List

List of service modes for repair, examination, and adjustment.

Confirmation of Hours Used

How to display and check the unit's total power-on hours.

When Replacing EEPROM (Memory) IC

Steps for replacing the EEPROM IC and setting correct data for new memory.

Electrical Adjustments Procedures

Before Making Electrical Adjustments

Precautions and preparation steps before performing electrical adjustments.

On-Screen Display Adjustment

Steps to access and adjust settings via the on-screen display menu.

Basic Adjustments - Fixed Value Confirmation

Confirmation of fixed values for various adjustment items in different modes.

Block Diagrams

DVD Block Diagram

Schematic diagram illustrating the functional blocks of the DVD section.

TV Block Diagram

Schematic diagram showing the functional blocks of the TV section.

Power Block Diagram

Diagram illustrating the power supply blocks and voltage regulation for the unit.

Printed Circuit Boards Layouts

LCD PCB Layouts

Top and bottom views of the LCD Printed Circuit Board.

DVDOperation2 PCB Layouts

Top and bottom views of the DVD/Operation 2 Printed Circuit Board.

AVRemoconSide JackOperation1 PCB Layouts

Views of the AV, Remocon, Side Jack, and Operation 1 PCBs.

Power and Back Light PCB Layouts

Top and bottom views of the Power and Back Light PCBs.

Schematic Diagrams

Memory 2 Schematic Diagram

Schematic diagram for the Memory 2 component on the DVD PCB.

RF Amplifier Schematic Diagram

Schematic diagram for the RF Amplifier section on the DVD PCB.

AudioVideo Schematic Diagram

Schematic diagram for the Audio/Video processing section on the DVD PCB.

Motor Drive Schematic Diagram

Schematic diagram for the Motor Drive control on the DVD PCB.

Regulator 2 Schematic Diagram

Schematic diagram for the Regulator 2 circuit on the DVD PCB.

Operation 2 Schematic Diagram

Schematic diagram for the Operation 2 PCB.

TunerStereo Schematic Diagram

Schematic diagram for the Tuner and Stereo sections on the AV PCB.

Micon Schematic Diagram

Schematic diagram for the Micon control unit on the AV PCB.

Sound Amplifier Schematic Diagram

Schematic diagram for the Sound Amplifier section on the AV PCB.

InOut Schematic Diagram

Schematic diagram for input/output connections on the AV PCB.

Power Schematic Diagram

Schematic diagram for the power supply circuits on the AV PCB.

OperationAV JackRemocon Schematic Diagram

Schematic diagrams for Operation, AV Jack, and Remote Control PCBs.

Decoder Schematic Diagram

Schematic diagram for the Decoder section on the LCD PCB.

Scaler 1 Schematic Diagram

Schematic diagram for the Scaler 1 processing unit on the LCD PCB.

Scaler 2 Schematic Diagram

Schematic diagram for the Scaler 2 processing unit on the LCD PCB.

LVDS Schematic Diagram

Schematic diagram for the LVDS interface on the LCD PCB.

TV Power Schematic Diagram

Schematic diagram for the TV power supply circuit on the Power PCB.

Inverter Schematic Diagram

Schematic diagram for the Inverter circuit controlling the back light.

Start SWEnd SW Schematic Diagram

Schematic diagrams for the Start SW and End SW PCBs.

Interconnection Diagram

Diagram showing how different PCBs and components are interconnected.

Waveforms

MPEGMICONDSP Waveforms

Oscilloscope waveforms for MPEG, Micon, and DSP signals.

AudioVideo Waveforms

Oscilloscope waveforms for Audio/Video processing signals.

Motor Drive Waveforms

Oscilloscope waveforms related to motor drive control.

Regulator 2 Waveforms

Oscilloscope waveforms for the Regulator 2 circuit.

Memory 2 Waveforms

Oscilloscope waveforms for the Memory 2 component.

RF Amplifier Waveforms

Oscilloscope waveforms for the RF Amplifier section.

TunerStereo Waveforms

Oscilloscope waveforms for the Tuner and Stereo sections.

Micon Waveforms

Oscilloscope waveforms related to the Micon control unit.

Sound Amplifier Waveforms

Oscilloscope waveforms for the Sound Amplifier section.

Decoder Waveforms

Oscilloscope waveforms for the Decoder section.

InOut Waveforms

Oscilloscope waveforms for Input/Output signals.

Mechanical Views and Parts Lists

Mechanical Exploded View

Exploded view illustrating the mechanical assembly of the main unit.

DVD Deck Exploded View (Top View)

Exploded view showing the top side mechanical assembly of the DVD deck.

DVD Deck Exploded View (Bottom View)

Exploded view showing the bottom side mechanical assembly of the DVD deck.

Mechanical Replacement Parts List

List of mechanical parts with their reference numbers and part numbers.

DVD Deck Replacement Parts List

List of replacement parts specifically for the DVD deck mechanism.

Electrical Replacement Parts List

Resistors, Capacitors, Diodes, Transistors, and ICs

Categories of electrical components including resistors, capacitors, diodes, transistors, and ICs.

Miscellaneous, Coils, Transformers, Jacks, Switches, and PCBs

Lists miscellaneous items, coils, transformers, jacks, switches, and PCB assemblies.

Additional Miscellaneous, Speaker, and Component Definitions

Includes additional miscellaneous parts, speakers, and component type definitions.

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