Panasonic GP7, TH-42PW7 Service Manual

Panasonic

Ideas for life

Plasma display

7 series

System only

65

37

42

August 2004

50

42

1

Panasonic

Ideas for life

1

Wide Products range

(1) Cover from 37 to 65 by PDP

2

Higher Picture Quality

(1) Higher Contrast at any condition (2) Brighter on actual picture

(3) Vivid color

7 Series CONCEPT

3

(4) More resolution

Panel Reliability

(1) Anti-burn & Long life screen

2

Panasonic

Ideas for life

High Contrast

New REAL BLACK Drive

for Sub--

for Sub

Field Drive System

Panasonic

1 Picture = 1 Field (Progressive Scan)

3

Panasonic

Ideas for life

Sub Field Drive System

High Contrast

1 TV Field

Basic Method (No Signal Condition)

Real Black Drive System(No Signal Condition)

Initialize SustainScan & Write

(Emission)

Black Level

( SD )

4

Panasonic

Ideas for life

Improve Contrast at bright place

4000:1

1000:1

Higher Contrast

Contrast

(150 lx)

42PWD6

42PWD7

N Co. 42 200 : 1

160 : 1

180 : 1

Contrast

(100 lx)

270 : 1

100:1

Contrast Ratio

10010

100 lx

150 lx

1000

[lx]

5

Panasonic

Ideas for life

Brightness & Contrast

1. Dark Place

2. Bright Place

Contrast

WHITEBLACK

Set Brightness

Panel Brightness

Ambient Light

Front filter Glass

Deep Black filter Glass

with Anti-Reflection Coating

Panasonic

Ideas for life

More Brightness

High Brightness

by “Step-formed box barrier rib” structure

Conventional

Strip--

Strip

Panel Brightness

Type ribs

10 % UP

7

Panasonic

Ideas for life

Original Signal

High Brightness

More Bright Picture on Dark Scene

Adaptive AGC

by

Adaptive AGC

(Automatic Gain Control)

Conventional AGC

by Average detection

Boosted only luminance signal by detecting Y edge signal

Adaptive AGC

by Edge detection

+

Black Level Expansion

( Picture Menu AGC ON mode)

8

Panasonic

Ideas for life

Reducing

Conventional

Cleaner Moving Picture Colour

MPD (Motion Picture Disturbance : Contour line)

MPD

New MPD Reduction

NR

DET

MPD is like rainbow colour noise on moving picture caused by PDP’s unique sub-field system.

New NR detects motion pattern that tends to generate noise and makes the necessary adjustments to maximize image quality

9

Panasonic

Ideas for life

Vibrant colors & Natural Skin Tones

Vivid Color

by

3D Colour Management system is new colour enhance technology. Primary colour can be enhanced without any affect to skin tone.

3D Color Management System

Enhancing sky blue

10

3D Color Management System

Enhancing grass green

Panasonic

Ideas for life

Achieve 2048 steps by None Liner Graduation System

1024

New Real Gamma

2048

1536

Real Gamma

2048

1536

1024

Graduation

Normal/Cinema

PW6/PHD6

Dynamic

New Real Gamma

11Sub Field Liner Coding

1 23456789 1110

10 Sub Field Liner Coding

768

Dark Bright

Scene

(APL)

12

1 2345678910

Panasonic

Ideas for life

14 Sub Field QUASI 100Hz Cording

Flicker Free with 1536 High Quality Picture

1536

1024

768

Graduation

512

PW7/PHD7 Normal/Cinema

PW7/PHD7 Dynamic

PW6/PHD6 Dynamic

Dark Bright

Scene

(APL)

14 Sub Field QUASI 100 Hz Coding

1 23456789 1110 12 13 14

13

Panasonic

Ideas for life

Digital signal process is changed pixel (RGB 3dots) base to dot basis.

Conventional

Sub-pixel Enhancer

Sub Pixel Enhancer

Processed pixel made a pair with RGB dots

Processed individual RGB dots basis

14

Panasonic

Ideas for life

New Color Phosphor Material reach Screen

Burn effect to CRT level

1.02 1

0.98

0.96

0.94

0.92

0.9

0.88

Anti Burn Panel

BrightnessReducingCurve

Recognize Burn-in （Brightness - 2.5%）

7 series

6 series

5 series

0.86

0.84

BrightnessreducingRatio

0.82

0.8 0 500 1000 1500 2000 2500 3000 3500 4000

100Hour

300Hour

1000Hour

Time（H）

15

Panasonic

Ideas for life

110%

100%

90%

80%

70%

Brightness

60%

Panel Life

Employment of new blue Phosphor extends panel life.

Definition

Panel life time is defined when brightness become 50% from operation start level.

50%

40%

30%

1 10 100 1000

Time

60,000 Hour

10000010000

16

Panasonic

Ideas for life

Hello

Lip Sync Improvement

Lip Sync Problem:

Picture is delayed from Sound due to number of

field memory device of Digital Signal Processing

specially PAL signal.

Hello

Sound

Video

Audio AMP.

I/P

I/P Conversion

I/P

I/P Conversion

Conversion

Memory

20 m sec. + 20 m sec. + 20 m sec. + 20

16.7 m sec. + 16.7 m sec. + 16.7 m sec. + 16.7 m

Signal Processing

Memory

20 m sec. + 20 m sec. + 20 m sec. =

16.7 m sec. + 16.7 m sec. + 16.7 m sec. =

Signal

Processing

Memory

Plasma

AI

Memory

Sub--

Sub

Processing

Memory

m sec. = 80 m sec.

Field

sec. = 66.8 m sec.

60 m sec.

50.1 m sec.

17

Wide Plasma Display Monitor

Circuit Explanation for

GP7 Chassis

Note: This presentation describes TH-42PW7 basis.

Panasonic

1. SPECIFICATION

1-1 SPECIFICATION

Model No.

CHASSIS

Screen Size

P A N E

No. of Pixels

No. of Dots

Size of Pixel

L

Drive Method Signal scan AC drive Waffle type SD

Power Source

Power Consumption

TH-42PW7

GP7

SD Type 42 inch 16:9 / 920 x 518 (mm)

H 852 X V 480 (VGA)

H 2,556 X V 480 dots

W 1.08 X H 1.08 (mm)

AC 100~120 V (UY) / 220~240V (except UY) 50/60Hz

290W 【Stand by (P.Save ON) : 0.7W, (P.Save OFF : 1.0W】

【Power OFF : 0.3W】

Applicable Signal

Contrast

Dimensions (WX HX D)

Weight

NTSC, PAL, SECAM,PAL60, Modified NTSC,

525i(480i), 525P(480p), 625i(575i), 625p(575p), 750p(720p)/60,50,

1125 (1080)/60i,50i,24p,24sf, 1250(1080)/50i

VGA, SVGA, XGA, SXGA, UXGA

4000 : 1

1020 X 610 X 89 (mm)

28.9 (kg) net

20

2. CHASSIS STRUCTURE

2-1. PCB Location

SU

SC

Scan Drive

Z

Audio Amp

D

Digital

Processing

P

Power

Supply

SS

Sustain

Drive

SD

H3

C1

42 inch ONLY

J Connection

HX

PC

PF

C2

H3

V1