Panasonic Viera TC-L42D2 Quick start guide

Slide # 1

Title Page

Panasonic National Training

Panasonic Service and Technology Company

2010 LCD TV Technical Guide

2010-LCD HD/FHD TV (13th Generation)

TC-L42D2

TC-L37D2

TC-L42U25

TC-L37U22

TC-L32U22

TC-L37X2

TC-L32X2

TC-L22X2

TC-L37C22

TC-L32C22

Applies to models:

TTG100618JM/100720

Slide # 2

Prepared by

Jean Magloire

Panasonic Service and Technology Company

National Training

Warning

This service information is designed for experienced repair technicians only and is not designed for use by the

general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in

attempting to service a product. Products powered by electricity should be serviced or repaired only by

experienced professional technicians. Any attempt to service or repair the product or products dealt with in this

service information by anyone else could result in serious injury or death.

2010 by Panasonic Service and Technology Company

"HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC.“

Warning

Slide # 3

Table of Contents

Topics 4Troubleshooting TCON Problems 42

Highlights 5Audio Process Circuit 44

Features 7SOS Detect (Shutdown) 45

Panasonic LED Backlighting Techniques 8TC-L37U22 Power LED Diagnostic Codes 46

LED Backlighting Techniques 9TC-L42D2 Power LED Diagnostic Codes 47

2010 D Series 10 1 Blink SOS Circuit 48

2010 U Series 11 3 and 7 Blinks SOS Circuit 51

2010 X Series 12 3 Blinks SOS Circuit Troubleshooting 53

2010 C Series 13 7 Blinks SOS Circuit Troubleshooting 54

Feature Comparison 14 4 Blinks SOS Circuit 55

2010 Series Description 15 4 Blinks SOS Circuit Troubleshooting 56

TC-L37U22 Board Layout 17 iPod SOS Circuit 57

TC-L37U22 Board Layout 18 9 Blinks SOS Circuit 58

TC-L37D2 Board Layout 19 Service Mode 60

TC-L37D2 Board Layout 20 Service Mode Menu (D2 Series) 61

TC-L37D2 P-Board Pictorial 21 D Series Measurements and Adjustments 62

TC-L37D2 A-Board Pictorial 22 How to Enter the Service Mode_ SRV-TOOL 63

TC-L37D2 TC-Board Pictorial 23 How to Enter the Self-check Mode 64

Standby Power_ All except D2 Series 24 Troubleshooting Picture Problems (All Series except D) 65

Standby Power_ D2 Series 25 Troubleshooting Picture Problems (D Series 78

Power-on Part 1_ All Except D2 26 Sound Defect 87

Power On Part 2_ All Series Except D2 28 Panel Free Run Mode 88

Power-on Part 1_ D2 Series 30 Data Copy by SD Card 89

Power On Part 2_ D2 series 32 Data Copy Preparation 90

CPU Commands Explanation 33 Data copy from the TV to SD Card 91

Inverter Circuit and 1 Blink SOS 34 Data copy from the SD Card to TV 92

LED Backlight Control 36 Glossary 93

U and X Series Video Signal Process Circuit 38

D Series Video Signal Process Circuit 40

Slide # 4

Topics

1. Features

2. Start-up Operation

A) Stand by Operation

B) Power On Operation

C) Voltage Distribution

3. SOS Detect

4. Signal process Circuit

A) Video Signal

B) Audio Signal

5. Service Notes

A) Service Mode

B) SRV-TOOL

C) Self check

D) SD card

6. Troubleshooting

7. Glossary

Slide # 5

IPS Panel

The IPS panel in 2010 VIERA models is an LCD panel that provides beautiful viewing from virtually any angle.

Colors appear uniform and consistent even when viewed from a wide angle, so images look fresh and natural no

matter where you're sitting. The panel's high light transmittance also maximizes the efficiency of the LED

backlight.

VA System IPS System

Highlights

Slide # 6

LED Backlight

Boasting a high luminous efficiency, the

LED backlight helps deliver a brighter,

more vivid picture while using less

electricity. You enjoy the kind of bright,

beautiful images that make VIERA such

outstanding entertainment, while also

saving energy.

Intelligent Scene Controller

Intelligent A.I. conducts a detailed analysis of

image motion and brightness information to

optimize the backlight brightness. This creates

sharp images by faithfully reproducing the

brightness of each scene while keeping the

power consumption low.

Highlights

Slide # 7

Features

Main Differences between the 2010 model and 2009 model

The different point of 37/32 inch 2010 models and 37/32 inch 2009

models are as follows:

Audio processor, Micom, HDMI de-multiplexer and video signal

processor are integrated to IC8001 Nile Tcon. IC4510 was

eliminated.

IC8300 Digital demodulator was eliminated.

Tuner power BT30V was eliminated (Tuner is operated by only 5V).

P4 terminal is integrated to P2 terminal.

A20 terminal is integrated to A03 terminal.

Slide # 8

Panasonic LED Backlighting Techniques

LED-LCD televisions have white LEDs that are arranged around the inside frame of

the TV along with a special light diffusion panel designed to spread the light evenly

behind the LCD panel. The result is a uniform color range throughout the screen.

The technology also allows for thinner panels. IPS panels deliver a 178° wide

viewing angle and bright, clear images from most any location in the room, thereby

increasing the viewing angle.

Panasonic’s top of the line VIERA LED-LCD D2 series features two 1080p Full HD

models - TC-L37D2, a 37-inch class (37” measured diagonally) HDTV and the TC-

L42D2, a 42-inch class (41.6” measured diagonally) HDTV. The LED method of

backlighting the LCD panel allows for the HDTVs to become extremely thin and

offers a wider color gamut than traditional back-lit LCDs, which use fluorescent

bulbs to provide the light source. Combined with the IPS panel, the viewing angle is

improved, contrast is also improved and there is lower power consumption. The D2

series also features the proprietary Universal Dock for iPod®; the VIERA Image

Viewer™ to view digital still JPEG photos; VIERA Link™, - a technology that

utilizes HDMI-CEC (Consumer Electronics Control) and allows a consumer to

operate all VIERA Link™ compatible A/V components using only the TV’s remote

control; a PC input; 24p Smooth film; 120Hz motion picture Pro 4; four HDMI

connections and Clear Panel.

Slide # 9

LED Backlighting Techniques

LED Lights the Way to Better Images, Thinner TVs and Energy Savings.

Introducing LED edge-lit technology to the VIERA® 2010 LCD model line-up. Edge

lighting uses white LEDs arranged around the inside frame of the TV along with a special

diffusion panel designed to spread the light evenly behind the LCD panel. This method of

backlighting the LCD panel allows for the LED LCD HDTVs to become extremely thin and

offers a wider color gamut than traditional back-lit LCDs, which use fluorescent bulbs to

provide the light source. Combined with the IPS panel, the viewing angle is improved,

contrast is better and there is lower power consumption.

LED-backlit LCD TVs are considered a more sustainable choice, with a longer life and

better energy efficiency than plasmas and conventional LCD TVs. Unlike CCFL

backlights, LEDs also use no mercury in their manufacture. However, other elements

such as gallium and arsenic are used in the manufacture of the LED emitters themselves,

meaning there is some debate over whether they are a significantly better long term

solution to the problem of TV disposal in the environment.

Because LEDs are able to be switched on and off more quickly than CCFL displays and

can offer a higher light output, it is theoretically possible to offer very high contrast ratios.

They can produce deep blacks (LEDs off) and a high brightness (LEDs on), however care

should be taken with measurements made from pure black and pure white outputs, as

technologies like Edge-LED lighting do not allow these outputs to be reproduced

simultaneously on-screen.

Slide # 10

Others

High Picture Quality Smart Networking

×3

•Extremely thin

•Full HD (1080P)

•120Hz Motion Picture Pro4

•Wide Viewing Angle with IPS Alpha Panel

•Motion Focus Technology

•2,000,000:1 Dynamic Contrast with Intelligent

Scene Controller

•Fine Black Panel

•VIERA Image Viewer™ (JPEG)

•VIERA Link™

•Game Mode

•PC Input

•Universal Dock for iPod® Included*

•Lower Power Consumption

VIERA Image Viewer™

(JPEG)

120Hz Motion Picture Pro4

Wide Viewing Angle

with IPS Alpha Panel

TC-L37D2

TC-L42D2

*42

1LED Backlight

2010 D Series

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