EasyManua.ls Logo

LG FLATRONez T730SH - User Manual

LG FLATRONez T730SH
39 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...
COLOR MONITOR
SERVICE MANUAL
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL:
T730SH
(T730SHMKQ-K***V*)
CHASSIS NO. : CM54A
( ) **Same model for Service
*Same looking with new chassis.
Question and Answer IconNeed help?

Do you have a question about the LG FLATRONez T730SH and is the answer not in the manual?

Summary

SPECIFICATIONS

Picture Tube Specifications

Details screen size, deflection angle, neck diameter, and face treatment.

Signal Input Specifications

Covers sync types, video input voltage levels, impedance, and signal format.

Power Supply and Consumption

Details power range, consumption modes, and LED color indicators.

Display Area and Environment

Covers active video area, display colors, resolution, bandwidth, and operating conditions.

Dimensions and Weight

Lists physical dimensions including width, depth, height, and weight.

SAFETY PRECAUTIONS

Component Safety Warnings

Highlights critical safety components and guidelines for their replacement.

Electrical Hazards and Precautions

Covers fire, shock, X-radiation, and handling high voltage during servicing.

SERVICING PRECAUTIONS

General Servicing Practices

Essential safety practices and general guidelines for servicing the monitor.

Electrostatic Discharge (ESD) Prevention

Techniques to protect sensitive electronic components from static electricity damage.

SOLDERING AND COMPONENT REPLACEMENT

General Soldering Techniques

Best practices for soldering and unsoldering components on printed circuit boards.

Component Replacement Procedures

Step-by-step guides for replacing ICs, transistors, diodes, and fuses.

CIRCUIT BOARD REPAIR

Copper Pattern Repair Methods

Techniques for repairing damaged circuit board traces using jumper wires.

TIMING CHART

Video Signal Timing Parameters

Detailed timing data for various video modes and resolutions.

DISASSEMBLY PROCEDURE

Back Cover Removal

Instructions for removing the tilt/swivel and back cover of the monitor.

WIRING DIAGRAM

BLOCK DIAGRAM

BLOCK DIAGRAM ANALYSIS

Power Supply and Protection Circuits

Analyzes SMPS, Over Voltage, X-RAY, and Beam Limit circuits.

Signal Processing and Control Circuits

Describes MICOM, Video Processor, Sync, Tilt, Brightness, and OSD circuits.

Deflection and Video Amplification Circuits

Explains deflection circuits and video pre-amp/output stages.

SERVICE ADJUSTMENTS

Preparation and Service Hotkey Access

Lists necessary tools and methods to enter the service menu.

Key Adjustment Parameters

Defines specifications for focus, size, centering, B+ voltage, and high voltage.

Geometric and Linearity Adjustments

Procedures for adjusting distortion, size drift, linearity, and trapezoid.

Color Balance and Cut-off Adjustments

Steps for white balance, color purity, and cut-off calibration.

Detailed White Balance and Focus Calibration

Advanced calibration steps for white balance, focus, and color purity.

SOFTWARE-ASSISTED ADJUSTMENTS

Factory Mode Configuration

Using software for factory preset and system adjustments.

White Balance & Luminance Calibration

Calibrating monitor display characteristics using software tools.

EDID DATA MANAGEMENT

EDID Data Reading and Modification

Guide to editing monitor's Extended Display Identification Data.

Writing EDID Data to EEPROM

Process for saving modified EDID data to the monitor's memory.

TROUBLESHOOTING GUIDE

1. No Power Troubleshooting

Diagnostic steps for when the monitor does not power on.

2. No Character Display Troubleshooting

Steps for diagnosing a blank screen or no character output.

3. No Raster Display Troubleshooting

Guide for diagnosing problems with no screen image or raster.

4. Vertical Deflection Failure Troubleshooting

Steps to troubleshoot lack of vertical image deflection.

5. DPM Failure Troubleshooting

Diagnosing issues related to Display Power Management (DPM) failure.

6. No Degaussing Troubleshooting

Troubleshooting steps if the degaussing circuit is not functioning.

7. Horizontal Deflection Failures

Addresses horizontal deflection problems and fixed horizontal size.

9. Horizontal Linearity Issues

Diagnosing and correcting problems with horizontal image linearity.

10. Abnormal Horizontal Size

Troubleshooting abnormal horizontal size, side pin, and pin balance issues.

13. Tilt and Vertical Size;Position Failures

Diagnosing and fixing tilt, vertical size, and position variations.

15. High Voltage and ABL Failures

Troubleshooting steps for high voltage and Automatic Beam Limiter (ABL) problems.

17. Focus Failure Troubleshooting

Diagnosing and resolving focus problems and FBT to CRT socket connections.

18. MICOM and 19. OSD Failures

Troubleshooting for failures in the MICOM (microprocessor) and On-Screen Display (OSD).

20. User Control Failures

Addresses problems with user control buttons and functions.

21. Missing Color Troubleshooting

Diagnosing and fixing issues with color reproduction.

22. Visible Retrace Issues

Troubleshooting steps for visible retrace lines on the screen.

23. Purity Failure Troubleshooting

Diagnosing and resolving color purity problems.

24. Misconvergence Troubleshooting

Solutions for image misconvergence issues.

25. Poor Focus Troubleshooting

Diagnosing and resolving problems related to poor focus.

EXPLODED VIEW

EXPLODED VIEW PARTS LIST

SCHEMATIC DIAGRAM

PRINTED CIRCUIT BOARD LAYOUTS

LG FLATRONez T730SH Specifications

General IconGeneral
Maximum Resolution1280 x 1024
Contrast Ratio500:1
Input SignalAnalog RGB
Screen Size17 inches
Max Resolution1280 x 1024
Input ConnectorsVGA

Related product manuals