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Sharp 190TW8FB User Manual

Sharp 190TW8FB
90 pages
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19” TFT LCD COLOR TELEVISION
ServiceService
ServiceService
ServiceService
Service Manual
TABLE OF CONTENTS
Description
Important Safety Notice .............................................
Technical Data ...........................................................
Connection .................................................................
OSD Menu Control Level Structure ...........................
OSD Adjustment ........................................................
Remote Control Keys .................................................
Safety and troubleshooting information ....................
Definition of Pixel Defects ..........................................
...........
Wiring Diagram ..........................................................
Mechanical Instructions .............................................
F/W Upload Instructions ............................................
Electronic Instructions.................................................
DDC DATA .................................................................
Safety Instructions, Warnings and Notes ........
Page
2
3~4
5
6
7
8
9
10~11
12
13~16
17
18~19
20~23
24
Description
Block Diagram ...........................................................
Scaler Board Schematic Diagram ..............................
Power Board Schematic Diagram ..............................
Button Board Schematic Diagram .............................
LED Board Schematic Diagram .................................
Scaler Board Layout Side View .................................
Power Board Layout Side View .................................
Button Board Layout Side View .................................
LED Board Layout Side View ....................................
Exploded View ...........................................................
Recommended Parts List ..........................................
Spare Parts List .........................................................
General Trouble Shooting Guide ...............................
General Product Specification ...................................
Safety Check Process ...............................................
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25
26~38
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42~43
44~45
46
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50~56
57~71
72~89
90
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC
EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINE.
Subject to modification
Oct. 16th. 2007
EN :
190TW8FB/00
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Sharp 190TW8FB Specifications

General IconGeneral
BrandSharp
Model190TW8FB
CategoryTV
LanguageEnglish

Summary

Safety Notice

Important Safety Notice

Laser Safety Precautions

Laser safety precautions and warnings for products containing lasers.

Product Reliability and Parts

Use of original manufacturer's replacement parts for product reliability.

LCD Module Handling

Precautions for handling the LCD module to prevent damage.

Technical Data

TV System Specifications

Technical specifications for the TV system, including tuner and subtitle features.

LCD Panel Specifications

Technical specifications for the LCD panel, including resolution and view angle.

I/O Functions Specifications

Technical specifications for input/output functions like HDMI, SCART, etc.

Input Signal Specifications

Technical specifications for various input signals.

Technical Data Continued

Input & Output Signal Specification

Detailed input and output signal specifications, including impedance and levels.

Connection Guide

Power Cord Connection

Steps for connecting the power cord to the set and outlet.

Remote Control Setup

Steps for setting up the remote control with batteries.

Quick Installation Guide

Quick installation guide for end-users, covering initial setup.

OSD Menu Control Structure

PAL Menu Structure Overview

Overview of the On-Screen Display menu structure for PAL signals.

sRGB Color Standard Explanation

Explanation of the sRGB color standard and its importance for color accuracy.

OSD Adjustment Procedures

Adjusting Picture Quality

Guide to adjusting picture quality settings like brightness and contrast.

Adjusting Audio Settings

Guide to adjusting audio settings like treble, bass, and sound effect.

Remote Control Key Definitions

General Remote Keys

Explanation of the general function keys on the remote control.

Safety and Troubleshooting

Safety Precautions and Maintenance

Essential safety precautions and maintenance guidelines for users.

Trouble Shooting Common Issues

Common problems and their solutions for troubleshooting.

Pixel Defect Definitions

Bright Dot Defects Explained

Definition and types of bright dot defects on the LCD screen.

Pixel and Sub-pixel Defects

Explanation of pixels, sub-pixels, and acceptable defect levels.

Types of Pixel Defects

Classification of pixel and sub-pixel defects.

Pixel Defect Proximity

Proximity of Pixel Defects

Tolerances for the proximity of pixel defects to ensure noticeability.

Wiring Diagram

Internal Component Wiring

Schematic showing the wiring connections between internal components.

Mechanical Instructions

Disassembly Process Steps

Step-by-step instructions for disassembling the monitor unit.

Electronic Instruction Details

Firmware Upload Procedure

Instructions for uploading firmware using the ISP tool.

Electronic Calibration

White Balance Adjustment Flow

Flowchart detailing the procedure for white balance adjustment.

DDC Data Information

Established Timing Parameters

List of established timing parameters for various display modes.

Safety Instructions and Notes

General Safety Instructions

General safety regulations and procedures for servicing.

Important Warnings

Critical warnings for service personnel regarding ESD and high voltage.

Block Diagram

System Architecture Overview

Diagram showing the overall system architecture and component connections.

Scaler Board Schematics

Power and EEPROM Circuits

Schematics for system power, external MCU power, and EEPROM.

Backlight and Brightness Circuits

Schematics for panel backlight and brightness control circuits.

Scaler Board LDO Schematics

Analog Power Supply Circuits

Schematics for standby, DAC, ADC, and analog power supplies.

Scaler Board MT8201 Schematic

MT8201 Digital Power

Schematics for MT8201 digital power and decoupling circuits.

Scaler Board DDR & FLASH Schematic

8-bit Flash Memory Requirement

Critical instruction regarding the use of 8-bit type flash memory.

Scaler Board HDMI Schematic

HDMI Type-A Connector Details

Specifications and details for the HDMI Type-A connector.

Scaler Board VGA/Audio Schematic

VGA Input Circuitry

Schematics for the VGA input interface.

Scaler Board Tuner Schematic

Tuner Circuitry

Schematics detailing the tuner component and its connections.

Scaler Board AV/SV/Audio Schematic

AV, S-Video, and Audio Circuits

Schematics for AV, S-Video, and Audio input/output circuits.

Scaler Board SCART Schematic

SCART Full Function Circuitry

Schematics detailing the SCART input/output circuitry.

Scaler Board Audio Codec Schematic

MT8291 Audio Codec Circuitry

Schematics for the MT8291 audio codec and related circuits.

Scaler Board LVDS Output Schematic

LVDS Output Circuitry

Schematics for the LVDS output circuitry to the display panel.

Scaler Board Audio Amplifier Schematic

Audio Amplifier Circuitry

Schematics for the audio amplifier and its associated components.

Scaler Board ADC/Keypad/IR Schematic

ADC, Keypad, and IR Receiver Circuits

Schematics for ADC, keypad, and IR receiver circuits.

Power Board Schematic

Power Board Circuitry

Schematic diagram of the power board.

Button Board Schematic

Button Board Circuitry

Schematic diagram of the button board.

LED Board Schematic

LED Board Circuitry

Schematic diagram of the LED board.

Scaler Board Layout Views

Scaler Board Layout S-A

Component layout for the scaler board, Side A.

Scaler Board Layout S-B

Component layout for the scaler board, Side B.

Power Board Layout Views

Power Board Layout P-A

Component layout for the power board, Side A.

Power Board Layout P-B

Component layout for the power board, Side B.

Button Board Layout Views

Button Board Layout B-A

Component layout for the button board, Side A.

Button Board Layout B-B

Component layout for the button board, Side B.

LED Board Layout Views

LED Board Layout L-A

Component layout for the LED board, Side A.

LED Board Layout L-B

Component layout for the LED board, Side B.

Exploded View Diagram

E9P Explode Diagram

Exploded view diagram showing assembly of the E9P model.

Recommended Spare Part List

Electronic Components List

List of electronic components with part numbers and descriptions.

PCBA Parts List

List of Printed Circuit Board Assemblies and their part numbers.

Included Accessories

List of accessories included with the product.

Spare Parts List Continued

Main Board Assembly Parts

Spare parts list specifically for the main board assembly.

Spare Parts List Continued

Chip Capacitors List

List of chip capacitors with their specifications and part numbers.

Spare Parts List Continued

Chip Resistors List

List of chip resistors with their specifications and part numbers.

Spare Parts List Continued

Chip Resistors List Continued

Continued list of chip resistors with specifications and part numbers.

Spare Parts List Continued

EMI Filters and Chip Capacitors

List of EMI filters and chip capacitors with specifications.

Spare Parts List Continued

Button Board Assembly Parts

Spare parts list specifically for the button board assembly.

Spare Parts List Continued

LED Board Assembly Parts

Spare parts list for the LED board assembly.

LCD Module Assembly Parts

Spare parts list for the LCD module assembly.

Power Board Assembly Parts

Spare parts list for the power board assembly.

Panel Kit Assembly Parts

Spare parts list for the panel kit assembly.

General Troubleshooting Guide

No Display / LED Amber

Troubleshooting steps for no display with LED on or amber.

Unstable or Flickering Picture

Troubleshooting steps for unstable or flickering picture issues.

Monitor Driver Installation Issues

Troubleshooting steps for issues related to monitor driver installation.

Sync Issues (H/V)

Troubleshooting steps for horizontal and vertical sync problems.

Picture Brightness Issues

Troubleshooting steps for pictures that are too bright.

Picture Dimness Issues

Troubleshooting steps for pictures that are too dim.

No Power / LED Off

Troubleshooting steps for issues related to no power or LED off.

Missing Color Troubleshooting

Troubleshooting steps for problems with missing colors.

Jitter / Video Noise Troubleshooting

Troubleshooting steps for jitter or video noise issues.

OSD Menu Lock Issues

Troubleshooting steps for a locked OSD main menu.

Power Management Function Issues

Troubleshooting steps for power management function not active.

Troubleshooting Guide Details

No Display / Amber LED Troubleshooting

Detailed troubleshooting for no display with LED on or amber.

Troubleshooting Flow

Amber LED Status Troubleshooting

Troubleshooting steps specific to an amber LED status.

Green LED Status Troubleshooting

Troubleshooting steps specific to a green LED status.

Monitor Driver Installation Guide

Installing Monitor Drivers (.inf file)

Detailed guide for installing monitor drivers for various Windows versions.

Troubleshooting Screen Size

Correcting Screen Size Issues

Detailed steps for correcting incorrect screen size.

Adjusting Picture Size (Large/Small)

Detailed steps for correcting pictures that are too large or small.

Troubleshooting Picture Instability

Fixing Unstable or Flickering Pictures

Detailed steps for resolving unstable or flickering picture issues.

Troubleshooting Sync Issues

Resolving H/V Sync Problems

Detailed steps for resolving horizontal and vertical sync problems.

Troubleshooting Picture Brightness

Fixing Overly Bright Picture

Detailed steps for fixing a picture that is too bright.

Troubleshooting Picture Dimness

Fixing Dim Picture Issues

Detailed steps for troubleshooting a picture that is too dim.

Troubleshooting No Power

Resolving No Power / LED Off Issues

Detailed steps for troubleshooting no power or LED off conditions.

Troubleshooting Missing Colors

Diagnosing and Fixing Missing Colors

Detailed steps for diagnosing and fixing missing color issues.

Troubleshooting OSD Lock

Unlocking OSD Main Menu

Detailed steps for unlocking the OSD main menu.

Troubleshooting Jitter and Noise

Resolving Jitter / Video Noise

Detailed steps for troubleshooting jitter and video noise.

Troubleshooting Power Management

Fixing Power Management Function Issues

Detailed steps for power management function not active.

General Product Features

TV System Features

General features related to the TV system.

LCD Panel Features

General features of the LCD panel.

I/O Functions Features

General features of input/output functions.

Input Signal Features

General features related to input signals.

General Product Features Continued

No Signal Behavior

Behavior of the monitor when no signal is detected.

Audio Specifications

Specifications related to the audio system.

Mechanical Specifications

Overview of mechanical specifications.

Remote Control Key Definitions

Power, Mute, Sleep, Display Keys

Definitions for Power, Mute, Sleep, and Display keys.

Source Selection Keys (TV, SCART, AV, PC)

Definitions for TV, SCART, AV, and PC source selection keys.

Navigation and Menu Keys

Definitions for navigation keys (Up, Down, Left, Right, OK) and Menu.

Channel and Volume Control Keys

Definitions for Channel Up/Down and Volume Up/Down keys.

Teletext and Special Function Keys

Definitions for Teletext, Reveal, Size, and MPX keys.

Remote Control Key Definitions Continued

Teletext Page Navigation Keys

Definitions for SUBPAGE, HOLD, R, G, Y, B teletext keys.

Wide Mode Key

Definition of the WIDE key for scaling modes.

Local Key Definitions

Power and Menu/Exit Buttons

Definitions for Power and Menu/Exit buttons on the monitor.

Channel and Volume Control Buttons

Definitions for CH Up/Down and Vol Left/Right buttons.

Input Source Selection Button

Definition of the Input/OK button for source selection.

Input/Output Signal Specifications

CVBS, S-Video, SCART Input Specs

Specifications for CVBS, S-Video, and SCART input signals.

Audio and PC Stereo Input Specs

Specifications for Audio and PC Stereo input signals.

Speaker and Headphone Output Specs

Specifications for built-in speakers and headphone output.

RF and VGA Input Specs

Specifications for RF and VGA input signals.

Signal Specifications Continued

RGB Signal and D-Sub Pinout

Specifications for RGB signals and D-Sub pin definition.

HDMI and SPDIF Signal Specs

Specifications for HDMI and SPDIF signal interfaces.

OSD Menu Structure

PAL Menu Structure Overview

Detailed structure of the PAL On-Screen Display menu.

OSD Menu Structure Continued

Settings Menu Options

Overview of options within the Settings section of the OSD menu.

Power Saving Features

Power Saving Modes

Details on Power-On, PC saving, Standby, and Power off modes.

PC Timing Modes

Pixel Format Timing Modes

List of PC timing modes based on pixel format and sync polarity.

Broadcasting Sound Standards

MPX Function Order Table

Table detailing MPX function order based on input sound mode.

Teletext Operation Guide

Teletext/MIX Mode Operation

Operation of Teletext/MIX mode for viewing teletext.

Teletext Page Navigation

Methods for selecting teletext pages using keys.

Teletext RGBY Soft Key Functions

Usage of Red, Green, Yellow, Blue soft keys in teletext.

Teletext Hold and Size Functions

Functions for holding teletext pages and zooming text.

Teletext Subtitle, Index, Reveal, Subpage

Functions for subtitle, index, reveal, and subpage in teletext.

Mechanical Specifications

Physical Dimensions and Packing

Physical dimensions and packing specifications.

Cabinet Material and Gap Specs

Cabinet material, texture, and gap specifications.

Cosmetic Criteria and Vibration Test

Cosmetic criteria for plastic and vibration test details.

Mechanical Specifications Continued

Drop Test (100G) Specifications

Specifications for the drop test under 100G.

Regulation and Reliability

Compliance and Certifications

Regulatory compliance and certifications for different regions.

Environmental Operating Requirements

Environmental conditions required for normal operation.

Electrostatic Discharge Requirements

Requirements for withstanding electrostatic discharge.

Mean Time Between Failure (MTBF)

Specifications for Mean Time Between Failure (MTBF).

Product Accessories

Power Cord and Audio Cable

Specifications for the power cord and audio cable.

VGA Cable and Remote Controller

Specifications for the VGA cable and remote controller unit.

User Guides and Warranty

Information regarding user guides and warranty card.

Safety Check Process

Post-Service Safety Checks

General safety checks to perform after service.

Fire and Shock Hazard Checks

Checks for fire and shock hazards during servicing.

Leakage Current Testing Procedures

Procedures for checking leakage current (cold and hot).

Picture Tube Replacement Guidelines

Guidelines for replacing the picture tube with safety notes.

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