Panasonic TH-L42D25R - User Manual

© Panasonic Corporation 2010. Unauthorized
copying and distribution is a violation of law.
ORDER NO. MTV1001879CE
LCD TV
Model No. TH-L42D25R
Chassis: LA02
Destination: IRAN
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.1.1. Leakage Current Cold Check---------------------- 3
1.1.2. Leakage Current Hot Check (See Figure
1.) --------------------------------------------------------- 3
2 Warning-------------------------------------------------------------- 4
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices---------- 4
2.2. About lead free solder (PbF)---------------------------- 5
3 Service Navigation ----------------------------------------------- 6
3.1. Service Hint ------------------------------------------------- 6
3.2. Applicable signals ----------------------------------------- 7
4 Specifications ----------------------------------------------------- 8
5 Service Mode -----------------------------------------------------10
5.1. How to enter into Service Mode ----------------------10
5.1.1. Contents of adjustment mode --------------------10
5.1.2. How to exit---------------------------------------------10
5.2. SRV-TOOL -------------------------------------------------11
5.2.1. How to access ----------------------------------------11
5.2.2. Display of SOS History ---------------------------- 11
5.2.3. POWER ON TIME/COUNT----------------------- 11
5.2.4. Exit ------------------------------------------------------ 11
5.3. Service Mode Adjustment------------------------------ 12
5.3.1. Self Check Mode ------------------------------------ 12
5.3.2. Hotel Mode Adjustment---------------------------- 12
5.3.3. Hotel Mode-------------------------------------------- 12
6 Troubleshooting Guide --------------------------------------- 13
6.1. Check of the IIC bus lines------------------------------ 13
6.1.1. How to access --------------------------------------- 13
6.1.2. Exit ------------------------------------------------------ 13
6.1.3. Screen display --------------------------------------- 13
6.1.4. Check Point------------------------------------------- 13
6.2. Power LED Blinking timing chart --------------------- 14
6.3. No Power--------------------------------------------------- 14
7 Disassembly and Assembly Instructions--------------- 15
7.1. AC Cord Dressing 1 ------------------------------------- 15
7.2. AC Cord Dressing 2 ------------------------------------- 16
7.3. AC Cord Installation ------------------------------------- 17

Panasonic TH-L42D25R Specifications

General

Screen Size	42 inches
Display Type	LCD
3D Technology	No
HDMI Ports	4
USB Ports	2
Ethernet Port	Yes
Wi-Fi	No
Aspect Ratio	16:9
Refresh Rate	50 Hz
Viewing Angle	178 degrees
Panel Type	IPS
Resolution	1920 x 1080 pixels

Summary

Safety Precautions

General Guidelines

General guidelines for servicing procedures and safety observations.

Leakage Current Cold Check

Procedure for measuring leakage current with the AC cord unplugged.

Leakage Current Hot Check

Procedure for measuring leakage current with the AC cord plugged in.

Warning

ESD Prevention

Techniques to prevent damage to sensitive electronic components from static electricity.

Lead-Free Solder (PbF)

Information on lead-free solder composition, properties, and handling.

Service Navigation

Service Hints

Overview of main boards and their functions within the TV.

Applicable Signals

Table of supported input signal types, frequencies, and resolutions.

Specifications

Service Mode

Entering Service Mode

Procedure to access service mode using remote and main unit buttons.

Adjustment Mode Contents

Details of adjustable parameters within the service mode.

Exiting Service Mode

Procedure for exiting the service mode.

SRV-TOOL

Accessing and using the SRV-TOOL function within service mode.

Service Mode Adjustments

General steps for adjusting settings within Service Mode.

Troubleshooting Guide

IIC Bus Line Check

Procedure to check IIC bus lines for communication errors and related checkpoints.

Power LED Blinking Timing

Chart correlating power LED blinking patterns to specific fault conditions.

No Power Troubleshooting

Troubleshooting steps for units that do not power on.

Disassembly and Assembly Instructions

AC Cord Dressing

Instructions for routing and securing the AC power cord.

AC Cord Installation

Procedure for installing the AC power cord and bracket.

LCD Panel Installation

Instructions for installing the LCD panel into the cabinet.

PCB Installation

Instructions for installing the A, P, and T-Con PCB assemblies.

Measurements and Adjustments

A-Board Power Supply Check

Procedure for checking power supply voltages on the A-Board.

White Balance Adjustment Values

Target chromaticity values (x, y) for White Balance adjustment.

Picture Level Adjustments

Procedures for adjusting picture levels using RF, VIDEO, and YUV signals.

Block Diagram

Main Block Diagram

Overall block diagram illustrating the TV's major functional units.

Detailed Block Diagram (1;3)

Detailed breakdown of the main block diagram, part 1.

Detailed Block Diagram (2;3)

Detailed breakdown of the main block diagram, part 2.

Detailed Block Diagram (3;3)

Detailed breakdown of the main block diagram, part 3.

Wiring Connection Diagram

Wire Dressing 1

Diagram showing the first wire routing and management scheme.

Wire Dressing 2

Diagram illustrating the second wire routing and management scheme.

Schematic Diagram

Schematic Diagram Notes

Notes and symbols used in the schematic diagrams.

A-Board (1;17) Schematic Diagram

Schematic diagram for A-Board, section 1 of 17.

A-Board (2;17) Schematic Diagram

Schematic diagram for A-Board, section 2 of 17.

V-Board Schematic Diagram

Schematic diagram for the V-Board.

TC-Board (1;6) Schematic Diagram

Schematic diagram for TC-Board, section 1 of 6.

Printed Circuit Board

A-Board Layout

Component layout diagram for the A-Board (A Side).

A-Board Layout (B Side)

Component layout diagram for the A-Board (B Side).

TC-Board Layout

Component layout diagram for the TC-Board (V-Board A Side).

V-Board Layout

Component layout diagram for the V-Board (A Side).

Exploded View and Replacement Parts List

Mechanical Parts List

Procedure to access the exploded view and mechanical parts list.

Electrical Parts List

Introduction to the electrical replacement parts list.

Replacement Parts List Notes

Notes regarding part abbreviations and RTL (Retention Time Limited) items.

Electrical Replacement Parts List

List of electrical components with part numbers and descriptions.