Panasonic Flat Panel Television GPH5D User Manual

Panasonic Services Company

National Training

TH-42PHD5/TH-50PHD5

TH-42PHW5/TH50PHW5

GPH5D Chassis

Plasma Display Panel

Troubleshooting Guide

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.

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Service Hints....................................................................................................46

After Image Prevention .......................................................................................53

Screen Saver Feature...................................................................................53

Side Bar Brightness adjustment....................................................................54

Option Setting.....................................................................................................55

Accessing the Option Menu.............................................................................55

Hidden Option Menu for GPH5D series...........................................................56

Sample Waveforms.............................................................................................58

HY/HZ board....................................................................................................58

HX board..........................................................................................................61

SC Board Input Signals....................................................................................63

SC Board Waveforms ......................................................................................64

SS-Board Input Signals....................................................................................66

SS Board Waveforms ......................................................................................67

PDP Defect Pixel Specification...........................................................................68

Connector Tables................................................................................................69

F-BOARD CONNECTORS ..............................................................................69

P-BOARD CONNECTORS..............................................................................69

HX- BOARD CONNECTORS...........................................................................73

HY / HZ- BOARD CONNECTORS...................................................................74

Adjustment Procedures.......................................................................................75

Panel label Information ....................................................................................75

+B Set-up.........................................................................................................76

Confirmation.....................................................................................................76

Driver Set-up....................................................................................................77

Initialization Pulse Adjust .................................................................................78

P.C.B. (Printed Circuit Board) exchange procedure.........................................79

Adjustment Volume Locations..........................................................................79

Test Point locations..........................................................................................80

Serviceman mode...............................................................................................81

CAT (computer aided test) Mode.....................................................................81

I²C Mode..........................................................................................................81

CD mode..........................................................................................................82

SD Mode..........................................................................................................83

I²C Menu Structure ..........................................................................................84

Alignment Procedures.........................................................................................85

NTSC Panel White Balance.............................................................................85

Pedestal Setting...............................................................................................86

PC/RGB Panel White Balance.........................................................................87

HD /525i /525P Panel White Balance ..............................................................89

625i Panel White Balance................................................................................91

Sub Brightness Setting ....................................................................................92

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Objective

The information provided in this document is designed to assist the technician in

determining the defective printed circuit board. The troubleshooting flow charts,

signal path charts and connector information should provide enough detail that

the technician can accurately determine which one of the printed circuit boards is

required to repair the product. Alignment and adjustment procedures are also

included in this document.

The Block diagrams and the schematic drawings reference the model TH-

42PHD5, but the technology is consistent with any GPH5D chassis.

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2002 Model Line Up

HD Plasma Display

HD Panel

Digital Cinema Reality

Advanced 3-dimensional

Progressive Scan

1366 x 768 XGA Resolution

(UXGA Compatible)

TH-50PHW5

50-inch (127 cm)

TH-42PHW5

42-inch (106cm)

Wide Plasma Display

Plasma Contrast Automatic

Tracking System (C.A.T.S.)

3-Dimensional Progressive

Scan

VGA Resolution (UXGA

Compatible)

TH-37PW5

37-inch (94cm)

TH-42PW5

42-inch (106 cm)

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Specifications

Our New 50” & 42” HD Progressive Panels

The industry’s highest-resolution panels

Panasonic

Progressive

Company PI

Progressive

Company F/H

Interlace

Scanning Method

50-

1,366 x 768=

1,280 x 768=

N/A

inch

1.05 million pixels

0.98 million pixels

Pixel

pitch

0.810 (H) x 0.810 (V)

= 0.656

0.858 (H) x 0.808 (V)

= 0.693

42/43-

inch

(42” Screen size)

1,024 x 768=

(43” Screen size)

1,024 x 768=

1,024 x 5120.52

million pixels

0.79 million pixels

Pixel

pitch

0.898 (H) x 0.674 (V)

= 0.605

0.930 (H) x 0.698 (V)

= 0.649

0.90 (H) x 1.02 (V)=

0.918 / 2= 0.459

[1frame]

Relationship between Picture resolution and Scanning method: 768p > 720p >

680p = 1080i > 1024i

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Features

Pixel explanation

SD (Standard Definition) Panel

852 pixels

480 pixels

410,000 Pixels

Provides the optimum number of pixels for viewing

standard broadcasts and DVD.

HD (High-Definition) panel

1,024 pixels

768 pixels

790,000 pixels

Reproduces even the tiniest details of high-definition

sources and other high-quality images.

Figure 1

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Scan Explanation

Panasonic progressive scan

ALIS system Interlace scan

Figure 2

The 1-field (1/60 sec) display pixels on the Panasonic 42" and 37" SD models

and on the ALIS system models are VGA level. (Panasonic HD models are XGA

level, for higher resolution.)

A.L.I.S. (Alternate Lighting of Surfaces) method is one of the new panel driving

systems of plasma display developed by Fujitsu Limited. ALIS method is a

system developed from the 3 electrode discharging system.

The ALIS method uses an interlaced driving scheme, which means the even and

odd lines are addressed alternately.

New

New front

protection

filter glass

improves

the natural

reds

phosphors

improve the

blue color

reproduction.

Figure 3

New Asymmetrical Cell Structure Panel

Figure 3 shows the unique asymmetrical cell structure that achieves both high

brightness and crisp whites. The asymmetrical arrangement of the red, blue and

green cells that control color reproduction results in a dramatically improved light-

emitting balance of the three primary colors. This reproduces purer whites while

maintaining a high level of brightness.

Model Differences

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Single Scan (SD)

Dual Scan (HD)

Figure 4

•Simple and low cost circuit

•High performance

•Higher brightness

Figure 5

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Disassembly

Rear Cover Removal

Remove the 27 screws,

shown in Figure 6, and

then pull away the rear

cover.

Figure 6

Removal of the shield

Remove the six screws, shown in

Figure 7, and then pull away the rear

shield cover.

Figure 8

Figure 7

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Location of Lead Wiring

High frequency

electromagnetic signals can

create electrical interference

within the unit. Be sure to

route all wires through their

respective harnesses

reference.

The chart below is an

illustration representing the

connectors and the wire

harnesses associated

with them.

Clamper Locations

Figure 9

Harness Number

Connector Number

Z6 èP6

10 11 12 13 14 15 16 17 18

Z10 èD10

Z17èD17

D12 èD22

D16 èD26

D25 èP5

Œ Œ

• Œ

Œ Œ Œ Œ

D27 èP7

Œ Œ Œ Œ

SC2 èP2

Œ Ž Œ Œ Œ Œ Œ

SC4 èP4

SC20 èD20

SC21èD21

H37èZ3 Œ

Œ Œ Œ Œ

H37 èZ4 Œ Œ Œ Œ Œ Œ Œ Œ Œ

SS1 èP1

SS3 èP3

•

SS32 èC32

SS42 èC42

ESC POWERèSS34

ESC V-BOARDèC44

F9 èP9

Fan 1 èP10

Œ Ž Œ

• • Œ

Fan 2 èP11

Fan 3 èP12

Œ Œ • •

Œ Œ Œ •

Fan 4 èP13

Œ= Wind the cable through the clamper once

•= Wind the cable through the clamper two times

Ž= Wind the cable through the clamper three times

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42” HD PCB Board Layout Diagram

Figure 10

Printed Circuit Board Information Table

Board Name

Part Number

Function

Data Drive (Upper Left)

Data Drive (Upper Right)

Data Drive (Lower Right)

Data Drive (Lower Left)

Format Converter

SS2

SS3

TNPA2428

TNPA2429

TNPA2430

TNPA2431

TZTNP01LLSB

TNPA2427

TNPA2444

TNPA2249

TZTNP01LLSU

TXNHZ40JJS

TXN/P10LLS

TNPA2439

TNPA2440

TNPA2441

TNPA2442

TNPA2443

TNPA2283AC

TNPA2434

TNPA2433

TNPA2435

TNPA2436

TNPA2437

TNPA2432

TNPA2282AC

TNPA2445

Plasma AI Sub-Field Processor

Line filter

Speaker terminal

PC type Input terminal

RCA type Input terminal

Power supply

Drive voltage oscillator

Primary oscillator

PFC oscillator

Drive voltage protection

Process voltage protection

Power switch

Scan out

Scan connection (Lower)

Sustain out

Sustain connection (Upper)

Sustain connection (Lower)

Scan connection (Upper)

Front SW. & Remote receiver

Audio out

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50” PCB Board Layout Diagram

Figure 11

Board Name

Part Number

Function

Data Drive (Upper Left)

Data Drive (Upper Center)

Data Drive (Upper Right)

Data Drive (Lower Right)

Data Drive (Lower Center)

Data Drive (Lower Left)

Energy Recovery Circuit

Format Converter

Plasma AI Sub-Field Processor

Line filter

Speaker Terminal

PC type Input terminal

RCA type Input terminal

Power supply

Drive voltage oscillator

Primary oscillator

TNPA2510

TNPA2511

TNPA2512

TNPA2513

TNPA2514AB

TNPA2515

SS2

SS3

TNPA2608

TZTNP01MHSB

TNPA2427AB

TXN/F10MHS

TNPA2249

TZTNP02KESE

TXNHZ40JJS

TXNP110MHS

TNPA2566

TNPA2567

TNPA2568

TNPA2569

TNPA2570

TNPA2283AC

TNPA2434AB

TNPA2518

TXNSS10MHS

TNPA2519

TNPA2520

TNPA2517

TNPA2282AC

TNPA2445

PFC oscillator

Drive voltage protection

Process voltage protection

Power switch

Scan out

Scan connection (Lower)

Sustain out

Sustain connection (Upper)

Sustain connection (Lower)

Scan connection (Upper)

Front SW. & Remote receiver

Audio out

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42” SD PCB Layout Diagram

Figure 12

Board Name

SS2

SS3

Part Number

TNPA2540

TNPA2541

Function

Data Drive (Lower Right)

Data Drive (Lower Left)

Format Converter

Plasma AI Sub-Field Processor

Line filter

TZTNP01MMSB

TNPA2589

TXN/F10MMS

TNPA2249

TZTNP020JAS

TXNHZ40JJS

TNPA2598

TNPA2622

TNPA2534

TNPA2584

TNPA2535

TNPA2536

TNPA2537

TNPA2583

TNPA2621

TNPA2590

Speaker terminal

PC type Input terminal

RCA type Input terminal

Power supply

Power switch

Scan out

Scan Connection (Lower)

Sustain Out

Sustain Connection (Upper)

Sustain Connection (Lower)

Scan Connection (Upper)

Front SW. & Remote Receiver

Audio out

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Video Signal Path Explanation

HY/HZ Board

Figure 13

The "HY/ HZ" board is equipped with one Component input, one Composite input

and one S-Video input. The Composite and S-Video inputs are applied to a

switching circuit, which is controlled by the system control IC, located on the D1-

Board. The switch select command is sent via the SCL3 and SDA3 lines. After

signal selection the composite or S-Video signals are amplified, buffered, and

applied to a 3D comb filter inside IC3803. The 3D Comb filter converts the

Composite input signals to Y, Pb, and Pr component signals. The output of

IC3804 is applied to the D1 Board via pins 1, 3, and 5 of the connector H2/D2.

Individual amplifiers buffered the Component input signals that are then applied

to the D1-Board via pins 15, 17, and 19 of the connector H2/D2. Vertical and

Horizontal Sync signals are also amplified on this board before they are applied

to the D1 Board.

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HX Board

Figure 14

PC RGB Signals are input to the HX Board. The RGB signals as well as the

vertical and horizontal sync signals are amplified by a series of transistor

amplifiers. The RS232C communications bus line is also connected on this

board. The RS-232C connection is provided so that operation changes can be

made via PC. An example of an application of this port would be remote turn on

of the unit for a kiosk or similar display.

The outputs of the HX board are applied to the D1 board via connector HX1/D3.

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D1 Board

Figure 15

After the input signals are amplified by the HY/HZ and HX boards the desired

signal is selected. The microprocessor sends the command via the IIC bus to the

input select switch (IC3001). The video switch selects from one of the three

inputs. The component video signal output from the video switch is amplified and

converted to digital. An optional Digital Visual Interface (DVI) input bypasses the

A/D process as DVI information is already in the digital format.

Concurrently, the desired sync signals are selected and applied to the Sync

Processor. NTSC and Component sync signals are stripped from the Green

video component while the PC sync is applied directly. The Sync Processor

combines the On-Screen Display Sync signal with the input sync and converts

them to match the video format.

The corresponding audio signal is selected by an Audio switch and applied to the

Z board for further amplification

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DVI Interface

Figure 16

An optional Digital Visual Interface (DVI) module connection is provided on this

generation Plasma Display Panels. The DVI interface allows direct digital transfer

from a display device to

the panel. A VGA or

component video signal

requires a conversion

from the digital to

analog and then

conversion back to

digital prior to input to

the Format converter see

Figure 17

Figure 17. The double

conversion can introduce

distortion to the signal.

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Figure 18 shows an

example of the DVI

interface. It permits direct

connection of the digital

video signal to the Format

converter. This bypasses

the D/A and A/D process

providing the better

Figure 18

quality picture.

Installation of the DVI interface requires removal of the HY/HZ Board and

replacing it with an optional DVI interface board.

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Sync Process

Figure 19

The vertical and horizontal sync signal paths are slightly different depending on

the Source signal.

RGB/PC Input Mode Sync

The vertical and horizontal sync signals generated by the input device are

applied to connector D3 or D2 to a Sync switch (IC3002). IC3002 outputs the

vertical and horizontal sync signals. The signals are inverted by IC8002 and then

applied to a sync processor (IC9451). IC9451 mixes the image sync signal with

the OSD sync signal prior to output to the format converter (IC9200).

Composite/ Component Video Input mode Sync

The video signals are applied to an input switch (IC3001). The output signal is

separated into Y, Pb and Pr with Sync on green signal. The Sync on green signal

is applied to a sync separator (IC8001). IC8001 outputs the Vertical and

Horizontal sync signals. From that point on the sync path is the same as the

RGB/PC input mode.

The A/D converter (IC9007) shapes the analog sync signal to clean digital pulses

prior to input to the format converter.

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D1 Board

Figure 20

D1-board consists of the Analog and Digital signal process. It also contains the

Discharge control and Microprocessor control block. Supply voltages of 13.5V,

5V, Standby 5V, 3.3V, and 1.8 V operate the D1-board. The input RGB video

signals are at 0.7Vp-p. Video signals in the form of parallel data and the control

signals for the data drive circuit are output.

D1 Main ICs Operation

IC3001 Video Switch

The user selects the desired video input using the front panel button or the

remote control. The microprocessor reads this data and sends out a command

via the IIC bus line. The IIC data is read by IC3001 and the video input is chosen.

IC9007 A/D Converter

This integrated circuit converts the RGB analog signals to eight bit parallel data.

IC9200 Format Converter

The digital video data is converted to progressive scan and mixed with the OSD

data. Other adjustments such as white balance, contrast and color are also

corrected here. The two channels of data are output to the D2 board for the sub-

field drive circuit.

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D2 Board

Figure 21

The D2 board provides the scan, sustain and data drive signals. The scan pulses

are output to the SC board. The sustain pulses are output to the SS board. The

data drive signals are output to the C1, C2, C3 and C4 boards. The C1 board

drives the Upper right portion of the panel; the C2 board drives the upper left

portion. The C3 and C4 boards drive the lower right and left portions of the panel

respectively.

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D2 Board details

Figure 22

The Plasma AI (Adaptive brightness Intensifier) circuits analyze the video

program level for the distribution of dark and bright components. The upper and

lower eight bit video signals are memorized into two Plasma AI processors

IC9651 and IC9601. The Plasma AI circuits converts the 8 bit signal data to 10

bit signal data. The Flash memories contain the algorithms for the AI circuit. Two

AI processors are used to speed up the scanning process and control the

number of sustain periods. This increases the brightness and improves the

contrast ratio.

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SC Board Explanation

Figure 23

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Figure 24

The SC Board consists of buffers and drivers used to generate the scan signals

to the panel. The buffers provide isolation between the D2 board and the drivers.

Connector SC20 provides the drive signals (140V, 100V and 18V). Connector

SC21 provides trigger signals to switch the FET transistors. The D2 board

switches the FETs on and off to create the distinctive scan signal. Each trigger

signal switches a drive FET creating a portion of the waveform. For example,

applying the CPH signal to the 140V FET creates the peak portion of the

waveform, see figure 23.

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Figure 25

After the scan waveform is developed on the SC Board, it is applied to the SU

and SD boards for de-multiplexing. The signal is input to a series of shift registers

inside the PDP scan driver IC. Figure 25 shows an example of the de-

multiplexing circuit. There are six driver ICs on the SU board and six on the SD

board.

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SS Board Explanation

Figure 26

After the video signal is processed on the D2 board, the sustain and erase pulses

are output to the SS board. The erase pulse is output at the beginning of each

scan period. The pulse is applied to the SS2 and SS3 boards to remove the

previous charge for the upper and lower sections of the display panel.

The sustain pulses are also developed on the D2 board and are applied after the

scan periods.

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Figure 27

Figure 28

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The Sustain pulse is developed using a similar circuit as the Scan Pulse. A series

of specifically timed pulses are applied to FET drivers creating the distinctive

sustain pulse. The drivers switch the voltages (150V, 155V and 175V) at selected

intervals determined by the D2 board. The basic waveform remains constant but

the exact number of sustain pulses is determined by the amount of luminance

required, see figure 28.

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Power Supplies

Standby Power Supply

Figure 29

The standby power supply provides the necessary DC voltage for the system

control Microprocessor, Reset circuit and the EEPROM. D421 rectifies the

incoming AC Voltage and applies it to the transformer T402 and the standby B+

control circuit IC400. The output pulses of IC400 are then applied to the primary

side of transformer T402. Diode D439 rectifies the AC output at pin 15 of the

secondary of T402 to create STB (Standby) voltage for the system control circuit.

The AC output at pin 14 of the secondary of T402 is rectified by diode D440 to

create the DC voltage for the power relays. Transistor Q418 creates the ground

path for power relay RL401. Transistor Q417 provides the ground path for the In

Rush Current relay RL400. The Opto-coupler D431 provides feedback to the

STB control circuit for voltage regulation.

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Main Power Supply

Figure 30

Power Factor Control

The power factor control circuit operates like a boost regulator. The incoming AC

voltage, after being switched on, enters the rectifier D402 where it is converted to

DC. The Power Factor Control (PFC) circuit converts the DC level to 400Vdc.

The negative side of the bridge rectifier D402 connects to ground via a resistor.

As current flows through the resistor, the resulting voltage drop enters pin 5 of

connector P19/P19A of the power factor control circuit board. The power factor

control circuit board is a switching control oscillator circuit which boosts the input

voltage at pin 2 of the transformer T401 to 400Vdc. As the pulses are output at

pin 4 of connector P19/P19A, the transistors Q400~Q405 are switched On/Off

controlling the charge and discharge time of the inductor L401. The output

voltage is monitored via pin 11 of the connector P19/P19A. The resistor R548

adjusts the output voltage to 400Vdc. The 400Vdc output to pin 2 of the

transformer T401 subsequently enters the drain of transistor Q416.

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Low Voltage Power supply

VCC and Start-up voltage for the low voltage power supply is provided to IC650

of the P5 Board by the standby power supply circuit (not shown). Upon start-up

of the switching control circuit, a pulse width modulated signal is output at pin 9

of connector P18/P18A to drive the switching transistor Q416. When Q416 is on,

current flows via the primary winding of transformer T401 and Q416. As current

flows through the transformer, energy is built up and stored in the transformer.

When Q416 turns off, the energy within the transformer begins to collapse. As

the field collapses, energy is released in the windings of the transformer to

provide the secondary voltages.

The rectified AC output at pin 10 of transformer T401 is applied to IC401 where it

is regulated to 18V. This voltage is used to power the Drive Oscillator circuit

board that will be discussed later.

Voltage Regulation

The 13.5V source and the VDA source voltage levels are monitored by IC650 of

the P5 Board. A voltage increase of the 13.5V or an increase in the current flow

of the VDA source causes IC416 to conduct harder, allowing more current to flow

through the LED inside opto-coupler D432. This increases the conduction of the

transistor inside D432. Conversely, a decrease in the 13.5V supply voltage or a

decrease in the current flow of the Vda source decreases the conduction of

IC416. Any change in the conduction of IC416 is monitored by pin 10 of IC450.

As a result, the pulse width modulated output at pin 10 of IC650 adjusts to keep

the output level of the power supply constant. R545 is used to adjust Vda to the

proper voltage level.

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High Voltage Power Supply

Figure 31

The P3-Board contains the drive voltage oscillator circuit that develops the Vsus

voltage needed to drive the Scan and Sustain boards. Operation begins with the

18Vdc supply being applied to pin 12 of connector P15. This voltage serves as

start up voltage for IC601. Q604, connected to pin 7 and 9 of the IC, provides

Oscillation control. The oscillator generates a trapezoid pulse that is input to a

PWM circuit (not shown) to control the output voltage. The PWM output at pin 2

of IC601 is applied to pin 2 and 3 of IC600. This IC is a wave driver that provides

two square wave outputs at opposite polarity. The two signals are then output to

the P1 board as H OUT at pin 1 and L OUT at pin 6 of connector P15.

Amplification of the two signals is performed the transistors Q407, Q408, Q409,

Q410 before being applied to the transformer T400. The output of the

transformer is provided to the SC-Board via pin 1 and 2 of the connector P2 and

to the SS board via Pins 2 and 3 of the connector P1.

Voltage feedback is provided via pin 8 of connector P16. This voltage enters pin

5 of IC601 for voltage regulation. R625 is used to set the output at the desired

level.

Note: The voltage level of the Vsus output is not mentioned because it is

different for each plasma display panel. This voltage level can be found on the

panel information label located on the heat sink of the panel.

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Over-voltage protection (OVP) is provided via pin 6 of connector P16. This

voltage enters pin 4 of IC601 for immediate shutdown of the IC if the Vsus

voltage rises to an undesired level. The OVP feedback is also provided to the

system control circuit via pin 13 of connector P15 for immediate shutdown of the

entire unit.

The P7 (High Voltage Protector) and P8 (Low Voltage Protector) circuit boards

monitor the DC output of all power supply boards. If any of the inputs is higher

than the desired level, a DC level is output via the “SOS IN” line to pin 1 of

connector P16. The operation is the same as the OVP input at pin 6 of the

connector P16.

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Protection Circuits

Figure 32

Protection circuits are incorporated in the unit to prevent the failure of a single

circuit or component from creating catastrophic damage.

The P7 and P8 boards are daughter boards on the P1 main power supply board.

The P7 board monitors the Vbk (195V), Vda (75V) and +17V supply voltages.

The voltages are fed through individual voltage dividers and the result is

compared to a 3.3V reference voltage by a comparator IC750. If any of the

voltages drop low, the comparator outputs a low triggering Q751. Q751 triggers

Q750 on, applying a high to pin 95 of the main CPU IC9351.

The circuitry on the P8 board monitors the plus and minus 13.5V lines used by

the audio circuit, the +5V line and another +13.5V line. If any of these supplies

were to drop, the comparator will output a low signal turning on Q776. Q776

conducts applying a high to pin 95 of the main CPU IC9351.

The four ventilation fans are monitored to be sure they are operating properly. If

one of the fans opens or increases resistance, the resulting current change is

applied to pin 98 of the main CPU.

The Scan and Sustain voltages on the SC and SS boards are monitored in a

similar manner. The +15V Line on the SS board is fed to a voltage divider and

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the result is compared to a reference voltage. The reference voltage is provided

by a zener diode. If the output of the comparator goes high, Q6741 turns on

effectively grounding the SOS line. The SC board uses a similar circuit to monitor

the +17V line.

The SS and SC boards contain an LED indicator to alert the technician when a

problem exists. The LED should be lit during normal operation, a dark LED

indicates that a problem exists on that board.

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Diagnostic Procedures

Self Check Display Indication

Self-check is used to automatically check

the bus line controlled circuits of the

Plasma display.

To get into the Self-check mode, press

and hold the Volume Down button on the

front of the unit, then the OFF-TIMER

button on the remote control. The graphic

in figure 32 should be displayed.

Note:

In case the H, HY or HZ boards are

disconnected, “IC3699 - -” is displayed.

Figure 33

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Power LED Flashing timing chart

When an abnormality has occurred in the unit, the protection circuit operates and

shuts off the power supply. The faulty area can be identified by the number of

flashes of the Power LED at the front of the unit.

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Diagnostic Flow Charts

No Power

There are three states of “No Power” indication by the power LED:

The power LED does not light up.

The power LED is green at power up. It then turns red a few seconds later

and blinks on and off.

The power LED is red at power up and never changes state.

Does the

power LED

turn on?

Check the

P-Board.

Yes

Do F900

and F901

measure

correctly?

Replace the defective

component.

Yes

The F Board is suspected to be

defective.

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The Power LED is red and blinking on/off.

When one or more of the power supply voltages is missing, the red LED blinks

on and off.

Remove Connector P5

Yes

Is the LED still

blinking red?

Blinking stops

But still no picture

Check D1-Board.

Remove Connector P1, P2.

Is the Power LED still

blinking red?

Check the output of the

Yes

P-Board.

Check SS/SC-Boards.

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Power LED blinks twice

Are the SS board

LEDs lit?

The SS board is suspected to

YES

be defective.

Is the SC board

LED lit?

The SC board is suspected

to be defective.

YES

Is the Vda voltage

correct?

The Power supply is

suspected to be defective.

YES

The D1 is suspected to be

defective.

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No Picture Flowchart 1

Is the On screen

Display information

visible?

Yes

Is the SC

Board LED

illuminated?

Yes

Is the SS

Board LED

illuminated?

Yes

SC Board is probably

defective.

D1 or D2 Board

is probably

Does the

problem exist on

all inputs?

SS Board is

defective.

probably defective.

Yes

Does the

problem exist on

Composite

video?

Yes

Does the

problem exist

on PC/RGB

video?

HZ Board is

probably defective

Yes

HX Board is

probably defective

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No picture Flowchart 2

Are the video signals

correct at the D1

board input?

Reference the HY/HZ and HX

board troubleshooting charts

YES

Is the SC board

LED lit?

The SC board is suspected

to be defective.

YES

Is the TPSC1

Waveform incorrect?

The D2 Board is suspected to

be defective.

YES

Are the voltages at

connectors SC2 and SC23

of the SC board correct?

The Power Supply is suspected

to be defective.

YES

Are the trigger signals at

connectors SC20 and SC21

of the SC board correct?

The D2 Board is suspected to

be defective.

YES

The SC Board is suspected

to be defective.

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Dark picture Flowchart

Are the video signals

correct at the D1

board input?

Reference the HY/HZ and HX

board troubleshooting charts

YES

Are the SS

board LEDs lit?

The SS board is suspected

to be defective.

YES

Is the TPSS1

Waveform incorrect?

The D2 Board is suspected to

be defective.

YES

Are the voltages at connectors

SS11 and SS12 of the SS

board correct?

The Power Supply is suspected

to be defective.

YES

Are the trigger signals at

connector SS33 of the SS

board correct?

The D2 Board is suspected to

be defective.

YES

The SS Board is suspected

to be defective.

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Local screen failure

The Plasma Display Panel unit may develop a failure, where the symptom is

localized in a particular area of the screen. The figure below can help localize the

circuit board that is most likely to be defective. In the example in figure 34, one

of the two boards, C3 and D2 is likely to be the cause.

Figure 34

Service Hints

Symptom: No picture (black Screen)

v Suggestion: The use of a magnifying glass can help localize the defective

printed circuit board. Use the

magnifying glass to take a close

look at the pixels of the screen.

1. If the pixels are totally dark, the

defect is most likely located in

one of the following boards:

a) SC-Board

b) SU-Board

c) SD-Board

Figure 35

1. Check the status of the LED located on the SC-Board; if the LED is dark, a

malfunction of the SC-Board is suspected.

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2. Listen to the buzz noise of the SC board; if the buzz noise is not present, a

malfunction of the SC-Board is suspected.

Figure 36

Suggestions: Check the Scan pulse waveform at

TPSC1. (Use TPSS1 of the SS-board to trigger

the oscilloscope.)

Verify the input signals at connector SC2, SC4,

SC20 and SC21.

Verify that the signals of the clock and serial data

lines from the D-board are present at connector

SC20 and SC21.

Figure 37

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Symptom: No picture (black Screen)

Figure 38

v Suggestion: The use of a magnifying

glass can help localize the defective

printed circuit board. Use the magnifying

glass to take a close look at the pixels of

the screen.

If the pixels are faintly lit, the defect is

most likely located in one of the following

boards:

SS Board

Figure 39

A) SS-Board

B) SS2-Board

C) S3-Board

1. Check the status of the LED located on the SS-Board; if the LED is dark, a

malfunction of the SS-Board is suspected.

2. Listen to the buzz noise of the SS-board. If the buzz noise is not present,

a malfunction of the SS-Board is suspected.

3. Verify the input signals at connector SS3 and SS1.

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Suggestions: Check the

Scan pulse waveform at

TPSC1 of the SC-Board.

(Use TPSS1 of the SS-

board to trigger the

oscilloscope.) Proceed to

check the power sources at

connector SS11, SS12 and

SS33.

Verify that the clock and

serial data lines from the D-

board are present at

connector SS33.

Note: It is easier to

Figure 40

measure input levels at

connector C33 of the C3-

Board instead of connector SS33.

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Symptom: Horizontal Black Bar

(Completely dark)

Note: The use of a magnifying glass can help

localize the defective printed circuit board. Use

the magnifying glass to take a close look at the

pixels in the area of the black bar.

1 If the pixels are totally dark, the defect is

most likely located in one of the following

boards:

Figure 41

a) SC Board

b) SU Board (upper half of the screen only)

c) SD Board (lower half of the screen only)

2. If the pixels are dimly lit, the defect is most likely located in one of the

following boards:

a) SS Board

b) SS2 Board (upper half of the screen only)

c) SS3 Board (lower half of the screen only)

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Symptom: Vertical Black Bar

Suggestion: Since the C2 board

contains the serial to parallel

converters for the picture data that

drive this portion of the screen; the

most likely cause for this defect can

be localized to the C2-Board or the

D2-Board.

Figure 42

q Symptom:

Vertical Black Bar

Suggestion: Since the C3 board

contains the serial to parallel

converters for the picture data that

drive this portion of the screen; the

most likely cause for this defect can

be localized to the C3-Board or the

D2-Board.

Figure 43

Symptom: No OSD but it has video.

v Suggestion: Check signal on the D1 board.

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v Symptom: Burned image

(pattern) is visible.

Suggestion: Activate the scroll

bar or run the set with a white

raster for at least fifteen minutes.

Panasonic

Figure 44

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After Image Prevention

If a customer has been viewing a 4:3 picture or another stationary pattern for a

long period of time it is possible for an after image to be burned into the panel.

Advise the customer that operation in 4:3 mode for a long period can cause a

permanent image burn, damaging the panel. Use of Just mode or Full mode is

recommended if the input video source is 4:3 aspect ratio. Pressing the Aspect

button on the remote control selects Just or Full mode.

Screen Saver Feature

The Screensaver feature may repair after image damage.

1. Press the Setup button on the remote control.

Figure 45

2. Use the Up/Down arrow buttons on the remote to highlight screensaver,

then press the center button.

Figure 46

Figure 47

Use the Up/Down arrow buttons to highlight

the function. Use the Left/Right Arrow buttons

to change the setting.

Figure 48

Negative causes the image to invert, white areas become dark and vice

versa. White bar scroll causes a white bar to appear and scroll across the

screen continuously. Select White bar scroll, then use the arrow down

button and then change the mode to ON.

3. Once the mode is ON the menu will

disappear and the scrolling bar will appear.

Let the Scrolling bar screensaver run for at

least 15 minutes if you are attempting to

remove an after image problem.

Figure 49

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4. To stop the screen saver, press the R button on the

remote control.

Figure 50

Side Bar Brightness adjustment

This feature allows the customer to adjust the

brightness of the non-picture area on either side

of the 4:3 image on screen.

Figure 51

1. Press the Setup button on the remote control.

Figure 52

2. Use the Up/Down arrow buttons to highlight Side bar adjust, then press

the action button.

Figure 54

Figure 53

3. Use the Left/Right Arrow buttons to select the desired setting, Off ? Dark

? Mid ? Bright.

Note: Setting the side bar to Bright may cause a flashing effect depending on

the image being displayed. Also Bright sidebars may cause an after image.

4. Press the R button on the remote control to exit this

menu.

Figure 55

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Option Setting

Accessing the Option Menu

Press to display the Setup

menu.

Figure 56

Press to select OSD Language.

Figure 57

Press the surround button on remote control for

more than three seconds. The action menu

should be displayed on screen.

Figure 58

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Settings the Action Menu

1. Use the Up/Down buttons to select the desired

item.

2. Use the Left / Right Buttons to select the

desired function

Figure 59

The option menu will disappear 60 seconds after

the operation.

Press the R button to exit the Option Menu.

Figure 60

Hidden Option Menu for GPH5D series

GPH5D chassis series have special function and operation setting facility that is

called “Option Menu”. This Option Menu is useful for special functions that are

required by certain customers. This should be set at the installation stage. The

end user could not set or change these because the optional On Screen menu is

hidden and accessible via the CAT-mode only.

Option menus

Wobbling

Default setting

Off

Contents

Wobbling operation On/Off.

The outline of burnt image will be blurred by

intermittent image shift.

Off-timer function

On Screen display

Enable

Off

Off-timer operation Enable/Disable.

Enable/Disable to display input mode

indication after power on and no signal

indication.

Input Initial

Off

Sets the initial input mode when the power is

turned on. Allow input mode selection while

power is on.

Initial VOL. level

Sets the initial volume level when the power is

turned on. Allow Volume control while power

is on.

Maximum VOL. Level

INPUT lock

Off

Sets the maximum volume to desired level.

Volume cannot exceed this level.

Fixes the input mode to AV, Component/RGB

or PC. Cannot change input mode by input

selection key.

Button lock

Studio W/B

Off

Enable/Disable front operation buttons (Input

and/or volume up/down)

Set warm mode color temperature to 3,200

Kelvin.

Remote control User

Level

Remote key invalidation

Off: All keys of the remote are valid.

User1: The keys that are Valid are: Stand-by

(ON/OFF), Input, Status, Surround, Sound

mute On/Off, and volume adjustment.

User2: The key that is Valid is only the Stand-

by (ON/OFF).

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Note:

Setting the remote control User Level and Remote ID off.

1. Access service mode (CAT-mode) and press SET UP key on remote.

2. Access the hidden option menu.

3. Change the remote control User Level and/ or Remote ID set to off.

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Sample Waveforms

HY/HZ board

The pages that follow contain samples of waveforms that are present when the

unit is in good operating condition. Prior to determining that a board should be

replaced, it is advisable that these waveforms are checked to help achieve the

right conclusion.

VIDEO/YUV

CONVERTER

Figure 61

Figure 61 is an illustration of the HZ-Board. The board is the interface between

the AV inputs and the D1-Board. When troubleshooting, connect a signal source

to the input terminals and observe the output signals at the connector.

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The waveforms listed below must be checked at connector H2 of the HZ-

Board.

CN H2, Pin B1

20us/div., 20mV

Green Signal Output

CN H2, Pin B3

20us/div., 20mV

Blue Signal Output

CN H2, Pin B5

20us/div., 20mV

Red Signal Output

CN H2, Pin A6

20us / div., 0.2V

Horizontal Output

CN H2, Pin A8

5ms /div., 0.2V

Vertical Output

CN H2, Pin A19

0.1ms/ div., 0.2V

SCL3

Note: If any of the signals shown here is missing, this

indicates a possible malfunction of the HZ-Board. Verify

that all DC and I²C inputs to the HZ-Board are present. If

these are correct, replacement of the HZ-Board is

recommended.

CN H2, Pin A20

0.1ms/div, 0.2V

SDA3

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The waveforms listed below must be checked at connector H2 of the HZ-

Board.

CN H2, Pin B17

5us /div, 20mV

Blue Signal input

CN H2, Pin B15

5us /div, 20mV

Red Signal Input

CN H2, Pin B19

5us/div 20mV

Green Signal Input

CN H2, Pin A19

0.1ms/div, 0.2V

SCL3

CN H2, Pin A20

0.1ms/ div, 0.2V

SDA3

Note: A possible malfunction of the HZ-Board may exist if any of the signals

listed above is missing. Verify that all DC and I²C inputs to the HZ-Board

are present.

If these are correct, replacement of the HZ-Board is recommended.

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HX board

Figure 62

Figure 62 is an illustration of the HX-Board. The board is the interface between

the PC input and the D1-Board. When troubleshooting, connect a PC to the input

terminals and observe the output signals at connector HX1/D3. See the next

page for waveform samples.

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Note: The signals listed below must be checked at connector HX1 of the HX-

Board.

CN HX1, Pin B18

10us_20mV

Green Signal Input

CN HX1, Pin B20

10us / div.20mV

Red Signal Input

CN HX1, Pin B16

10us/ div, 20mV

Blue Signal Input

CN HX1, Pin B12

5ms/ div, 0.2V

Vertical Drive

CN HX1, Pin B14

10us/div, 0.2V

Horizontal Drive

CN HX1, Pin A4

5us/ div, 20mV

Serial Data

Note: A possible malfunction of the HX-Board may

exist if any of the signals listed on this page is missing.

Verify that all DC inputs to the HX-Board are present. If

these are correct, replacement of the HX-Board is

recommended.

CN HX1, Pin B4

5ms/ div, 0.2V

Serial Clock

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SC Board Input Signals

Figure 63

Figure 63 is an illustration of the SC-Board connection to the remaining boards of

the panel. The SC-board is the interface between the D2-Board, SU and the SD

Boards. When troubleshooting, connect a fixed video source to any of the input

terminals and observe the input signals at connector SS20 and SS21. See the

next two pages for waveform samples.

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SC Board Waveforms

The waveforms listed below must be checked at connector SC20 of the SC-

Board.

CN SC20, Pin 1

1ms / div, 0.2V

CRL

CN SC20, Pin 2

1ms / div, 0.2V

CEL

CN SC20, Pin 3

1ms / div, 0.2V

CEH

CN SC20, Pin 6

1ms / div, 0.2V

CSL

CN SC20, Pin 7

1ms / div, 0.2V

CSH

CN SC20, Pin 8

1ms / div, 0.2V

CML

CN SC20, Pin 9

1ms / div, 0.2V

CMH

CN SC20, Pin 10

1ms / div, 0.2V

CRH

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The waveforms listed below must be checked at connector SC21 of the SC-

Board.

CN SC21, Pin 2

1ms / div, 0.2V

CN SC21, Pin 3

1ms / div, 0.2V

CLK

CN SC21, Pin 4

1ms / div, 0.2V

SIU

CN SC21, Pin 6

1ms / div, 0.2V

SID

CN SC21, Pin 7

1ms / div, 0.2V

SCSU

CN SC21, Pin 8

1ms / div, 0.2V

CPL

CN SC21, Pin 9

1ms / div, 0.2V

CPH

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SS-Board Input Signals

Figure 64

Figure 64 is an illustration of the SS-Board connection to the remaining boards of

the panel. The SS-board is the interface between the D2-Board, SS2 and the

SS3 Boards. When troubleshooting, connect a fixed video source to any of the

input terminals and observe the input signals at connector SS32. See the next

page for waveform samples.

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SS Board Waveforms

The waveforms listed below must be checked at connector SS32 of the SS-

Board.

CN SS32, Pin 2

1ms / div, 0.2V

URH

CN SS32, Pin 3

1ms / div, 0.2V

UEL

CN SS32, Pin 4

1ms / div, 0.2V

UEH

CN SS32, Pin 5

1ms / div, 0.2V

UBL

CN SS32, Pin 6

1ms / div, 0.2V

USH

CN SS32, Pin 7

1ms / div, 0.2V

UML

CN SS32, Pin 8

1ms / div, 0.2V

UMH

CN SS32, Pin 10

1ms / div, 0.2V

URL

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PDP Defect Pixel Specification

1. Dead Pixel (pixel is always off)

2. Lit Pixel (pixel is always

3. Pair defect (Adjacent pixels

4. Defects Distance (Distance between

nearest two defective pixels)

Check Zone

25%

Zone A

25%

Zone B

Specification

Zone

Lit Pixel

Dead Pixel

Single Defect

Pair Defect

Defect Distance

5 cm

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Connector Tables

F-BOARD CONNECTORS

The following table lists the voltage levels present at each pin of the connectors

of the F-Board. Use this information to confirm that the F-Board is operating

properly.

Connector F1

Signal Name

Voltage Findings

Pin Numbers

AC IN

AC Line Input Level

AC Line input Level

Voltage Findings

AC Line input Level

Connector F9

Pin Numbers

Signal Name

AC OUT

AC Line input Level

P-BOARD CONNECTORS

The following table lists the voltage levels present at each pin of the connectors

of the P1-Board. Use this information to confirm that the P1-Board is operating

properly.

Connector P1/SS1

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

P1---àSS1 (SS-BOARD)

VSUS

GNDa

Connector P2/SC2

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

P2---àSC2 (SC-BOARD)

VSUS

GNDa

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P-BOARD CONNECTORS (Continued)

Connector P3/SS3

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

P3---àSS3 (SS-BOARD)

VDA

+17V

GNDa

GND

STB PS

Connector P4/SC4

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

P4---àSC4 (SC-BOARD)

+17V

GNDa

Connector P5/D25

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

P5---àD25 (D2-BOARD)

13.5V

GND

+5.2V

GND

FAN CONT

GND

Connector P6/Z6

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

P6---àZ6 (Z-BOARD)

+13.5V

GNDs

-13.5V

GNDs

+5.2V

GNDs

Connector P7/D27

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

P7---àD27 (D2-BOARD)

P7---àD27

P7---àD27 (D2-BOARD)

RUSH ON/OFF

TV ON/OFF

GND

STB5V

KILLSOS

FAN SOS

PS SOS

ALL OFF1

GND

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Connector P10/FAN

Signal Name

Signal Flow

(Board or Connector)

P10---àFAN

Pin Numbers

FAN +12V

GND

FAN SOS

P10---àFAN

Connector P11/FAN

Signal Name

Signal Flow

(Board or Connector)

P11---àFAN

Pin Numbers

FAN +12V

GND

FAN SOS

P11---àFAN

Connector P12/FAN

Signal Name

Signal Flow

(Board or Connector)

P12---àFAN

Pin Numbers

FAN +12V

GND

FAN SOS

P12---àFAN

Connector P13/FAN

Signal Name

Signal Flow

(Board or Connector)

P13---àFAN

Pin Numbers

FAN +12V

GND

FAN SOS

P13---àFAN

Connector P15/P15A

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

H. OUT

H. OUT GND

H. VCC

P15---àP15A (P3-BOARD)

L. OUT

L. DRIVE. GND

L. CNT. GND

I. SENSE. GND

I. SENSE

18V

SOS OUT

Connector P16/P16A

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

SOS

+17V

GNDa

P16---àP16A (P3-BOARD)

VSUS OVP

VSUS

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P-BOARD CONNECTORS (Continued)

Connector P18/P18A

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

STOP

VCC

START

GATE

H. GND

P18---àP18A (P1-BOARD)

C.L.M.

F.B

Connector P19/P19A

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

START

VCC

BACK UP

GATE

P19---àP19A (P6-BOARD)

MULTI

H. DRIVE. GND

H. SIGNAL. GND

VRMS

IAC

TV ON

F.B

OVP/SOS IN

Connector P22/P22A

Signal Name

Signal Flow

Pin Numbers

(Board or Connector)

13.5V

5.2V

+13.5Vs

-13.5Vs

GNDa

VCC

P22---àP22A (P8-BOARD)

SOS

GNDa

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HX- BOARD CONNECTORS

The following table lists the voltage levels present at each pin of the connectors

of the HX-Board. Use this information to confirm that the HX-Board is operating

properly.

Connector

HX1/D3

Pin Number

A-1

Signal Name

Voltage Findings

Signal Flow

(Board or Connector)

SCL

SDA

GND

5.2Vdc

4.4Vdc

GND

HX1---àD3 (D1-BOARD)

A-2

A-3

A-4

A-5

A-6

A-7

A-8

A-9

A-10

A-11

A-12

A-13

A-14

A-15

A-16

A-17

A-18

A-19

A-20

PC Rs

PC Ls

5.2Vdc

HX1---àD3 (D1-BOARD)

Connector

HX1/D3

Pin Number

B-1

Signal Name

Voltage

Findings

Signal Flow

(Board or Connector)

STB5V

DTE-XC

DCE-XC

TXD-XC

RXD-XC

12V

PC VD

GND

PC HD

GND

PC B

GND

PC G

GND

PC R

5Vdc

9Vdc

0Vdc

5Vdc

HX1---àD3 (D1-BOARD)

B-2

B-3

B-4

B-5

B-6

B-7

B-8

B-9

B-10

B-11

B-12

B-13

B-14

B-15

B-16

B-17

B-18

B-19

B-20

12.1Vdc

12Vdc

4.6Vdc

GND

4.5Vdc

GND

Varying Vdc

GND

Varying Vdc

GND

Varying Vdc

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HY / HZ- BOARD CONNECTORS

The following table lists the voltage levels present at each pin of the connectors

of the HY or HZ -Board. Use this information to confirm that the HY or HZ-Board

is operating properly.

Connector

H1/D1

Pin Number

A-1

Signal Name

Voltage

Findings

Signal Flow

(Board or Connector)

GND

9Vdc

GND

5.2Vdc

GND

3.46Vdc

GND

5Vdc

GND

H1---àD1 (D1-BOARD)

A-2

A-3

A-4

A-5

A-6

A-7

A-8

A-9

A-10

A-11

A-12

A-13

A-14

A-15

A-16

A-17

A-18

A-19

A-20

A-21

A-22

A-23

A-24

A-25

GND

3.3V

GND

STB5V

GND

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Adjustment Procedures

Panel label Information

Panel Part

Number

MC106W36P4

NO. *************

Panel Serial

Number

Vbk: **** V

Ve: **** V

Vsus: **** V

Vad: **** V

Made in Japan

Adjustment

Voltage

Panel Production Date

***

Figure 65

An example of the panel production date:

Beginning of July 2001

Month

Beginning of Month (1-10)

Middle of Month (11-20)

End of Month (21-31)

Year

January

February

March

September

October

November

December

1999

2000

2001

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+B Set-up

Item / Preparation

Input a Black & White video signal.

Set the picture mode to Normal and the White Balance to Normal

Adjustments

Adjust and confirm the indicated test point below for the specified voltage.

Figure 66

Adjustment table

Name

Test Point

Voltage

Volume

PFC

P24 pin 1

P1 pin 2

P3 pin 1

400V ± 1V

175V ± 1V

75.0 ± 0.5V

R548

R625

R545

Vsus

Vda

Confirmation

Name

+18V

+13.5V

Audio +15V

Audio –15V

5.25V

Test point

Voltage

17.2V ± 0.5V

13.2V ± 0.5V

P4 pin 1

P5 pin 1

P6 pin 1

P6 pin 3

P5 pin 5

P7 pin 4

Audio 13.5V ± 0.5V

Audio –13.5V ± 0.5V

5.1V ± 0.3V

STB5V

5.0V ± 0.3V

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Driver Set-up

Item / Preparation

Input an APL 100 % white signal.

Set the picture mode to Normal and the White Balance to Normal

Adjustments

To perform the following adjustments, please refer to the panel information label

located on the heat sink of the panel. See the next page for more information

about the panel label.

Name

Vsus

Test point

TPVSUS

Voltage

Vsus ± 1V*

Volume

R625

(SS-BOARD)

(P3-BOARD)

Vbk

TPVBK

(SC-BOARD)

TPVE

Vbk ± 5V*

Ve ± 1V*

R6670

(SC-BOARD)

R6770

(SS-BOARD)

Vset

Vad

TPVSET

(SC-BOARD)

TPVAD

218 V ± 6V

Vad ± 1V*

---

R6477

(SC-BOARD)

R545

(C9-BOARD)

Vda

TP117

74V ± 1V

(SC-BOARD)

TPVSCN

(P1-BOARD)

VSCN

Vad+118 ± 2V

---

(SC-BOARD)

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Initialization Pulse Adjust

Item / Preparation

Input a Crosshatch signal.

Set the picture mode to Normal and the White Balance to Normal

Adjustments

Adjust the indicated test point for the specified waveform. Use TPSS1 as the

trigger source.

Test point

TPSC1 (SC)

Volume

R6523 (SC-Board)

Level

? 0

TPSC1 (SC)

R6557 (SC-Board)

170 ±20µ Sec

Figure 67

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P.C.B. (Printed Circuit Board) exchange procedure

1. Caution

Wait 1 minute for the electrolytic capacitors to discharge before removing

any PCB from the unit.

2. Quick adjustment after P.C.B. exchange

P.C.B.

P Board

Item

PFC

Volume

R548 (P3)

Test point

P24 connector pin 1

TPVsus (SS)

TP117 (C9)

Level

400V ± 1V

Vsus

Vda

Vad

Vbk

R625 (P3)

R545 (P1)

R6477 (SC)

R6670 (SC)

R6770 (SS)

Vsus ± 1V*

74V ± 1V

Vad ± 1V*

Vbk ± 5V*

Ve ± 1V*

SC Board

TPVAD (SC)

TPVBK (SC)

SS Board

TPVE (SS)

D1, D2 Board

White Balance, Pedestal and Sub brightness for NTSC, Pal, HD, PC, and 625i

signals

*Refer to the Panel label for the exact value.

Adjustment Volume Locations

Figure 68

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Test Point locations

Figure 69

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Serviceman mode

CAT (computer aided test) Mode

CAT mode menu

CAT Panel

sys8.1

IIC Mode

Mode

IIC

Function

Service Alignment

Access Button

Action

(Complete

Diagnostics) Edit

SD (Status

Display)

Software Version

Information EEPROM More than 5

Mute

CD Mode

SD Mode

seconds

Action

MTBF Parameter

MS Mode

Not used

------

MS Mode

ID Mode

Remote Control

How to access the CAT mode.

Status

VOL

Press and hold the Volume/Down button on the

front panel of the unit and press the status

button on the remote control three times within

one second, this will place the unit into the CAT

Mode.

VOL Up/Down

Return

VOL Up/Down

Left/Right

Action

To exit the CAT mode, access the ID mode and

switch off the main power.

I²C Mode

Select the I²C mode by pressing the Up/Down button on the remote control from

the front page of the CAT menu, and then press the Action button on the

remote control.

How to use the I²C mode?

1. Select the alignment subject by pressing the

UP/Down buttons on the remote control.

2. Select the alignment item by pressing the Left

and Right buttons on the remote control.

3. Adjust the optimum setting by pressing the

Volume Up/Down buttons on the remote

control.

4. The data is memorized when the R button is pressed on the remote control

or the alignment Subject (or item) is changed.

To exit the I²C mode, press the R button on the remote control.

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CD mode

Select the CD mode from the front page of the CAT menu by pressing the

Up/Down button on the remote control, and then press the Mute button on the

remote control for more than 5 sec.

OSD

MiCom Software version

MiCom Software Version

0.11

0.11 1

21.05

8 63

78 3F

Factory

Memory data version D

Memory data version H

Memory data change

Address

Memory data change Address

Data

New data

Original data

The software version of the EEPROM (IC9354) can be upgraded by:

1. Installing a new version IC

2. Loading the new version software from the loader tool, TZSC07036

Memory data change

Change by pressing the Up/Down

buttons on the remote control.

Address

Data

Change by pressing the Left/Right buttons on the

remote control.

Change by pressing the Volume

Up/Down buttons on the remote

Note: The data is memorized when the main power switch is pushed to the off

position.

To exit the CD mode, press the R button on the remote control.

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SD Mode

Select the SD mode from the front page of the CAT mode by pressing the

Up/Down button on the remote control, and then press the Action button on the

remote control.

OSD

History of remote control command

(Factory use)

Input command

Check

23 25 27-- -- -- -- 27 27 27

-- -- -- -- -- -- -- 28 25 25 37

Power Protect

Cumulative time for power on

condition. (Unit: hour)

MTBF Parameter

Counter of power on (Unit: hour)

Remote Control mode

To exit the SD mode, press the R button on the remote control.

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I²C Menu Structure

The values indicated in this flowchart are sampled data.

Figure 70

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Alignment Procedures

NTSC Panel White Balance

Equipment required: NTSC Gray scale pattern Generator, Color Analyzer

Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9

Pattern Display:

Figure 71

Step 1 Find the area of Low light closest to 10 cd/m2 using the color

sensor.

Step 2 Access the Sub Brightness setting and Adjust Sub bright level of

this area to exactly 10 cd/m2.

Step 3- Access the G cut off setting and Set G cut off to " 80 ".

Step 4- Access the B and R cutoff settings and adjust B and R cut off

adjustments so the color temperature matches the settings in Table 1.

Table 1

Color Temp.

Cool (High)

Normal (Mid)

Warm (low)

0.272

0.288

0.313

0.290

0.296

0.329

Step 5- If the Sub Brightness has changed, re-adjust it to set Low light to

10 cd/m2.

Step 6- Find the 75% white area using the color sensor.

Step 7- Access the G Drive setting and set G Drive to " D8 ".

Step 8- Access the B and R Drive settings and adjust B and R Drive to set

the color temperature as shown in table 1.

Step 9- Repeat item (4 to 7) to set both Low light and High light.

Step 10- Increase the level of R, G and B Drive to the largest level of "FC".

Step11- Re-adjust Low light level again.

Step 12- Change white balance to "Normal" and repeat procedures (3 to

11) for Cool mode.

Step 13- Change white balance to "Warm" and repeat procedures (3 to

11) for Cool mode.

Step 14- Change color temperature to "Cool" and Reset Sub Bright value

to “30”.

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Pedestal Setting

Equipment required: HDTV Component Video Gray scale pattern Generator, PC

Video Gray Scale Generator

Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9

Pattern Display:

Figure 72

Step 1- Access the R, G and B cutoff settings and set them to “80”.

Step 2- Under the Chroma Control setting, Set Gun off to "5" (Only green

pixels emitting).

Step 3- Access the RGB Sub Adjust, G Sub Bright setting and adjust G

Sub bright so that green pixel emission starts at black 2% area and no

emission occurs in the black 0% area.

Step 4- Under the Chroma Control setting, Set Gun off to "3". (Only blue

pixels emitting.)

Step 5- Access the RGB Sub Adjust, B Sub Bright setting and adjust B

Sub bright so that blue pixel emission starts at black 2% area and no

emission occurs in the black 0% area.

Step 6- Under the Chroma Control setting, Set Gun off to "6". (Only red

pixels emitting.)

Step 7- Access the RGB Sub Adjust, R Sub Bright setting and adjust R

Sub bright so that Red pixel emission starts at black 2% area and no

emission occurs in the black 0% area.

Step 8- Change input to PC / RGB signal. Repeat procedure (1 to 7) using

PC input signal.

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PC/RGB Panel White Balance

Equipment required: PC Gray scale pattern Generator, Color Analyzer

Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9

Pattern Display:

Figure 73

Step 1 Find the area of Low light closest to 10 cd/m2 using the color

sensor.

Step 2 Access the Sub Brightness setting and Adjust Sub bright level of

this area to exactly 10 cd/m2.

Step 3- Access the G cut off setting and Set G cut off to " 80 ".

Step 4- Access the B and R cutoff settings and adjust B and R cut off

adjustments so the color temperature matches the settings in Table 1.

Table 2

Color Temp.

Cool (High)

Normal (Mid)

Warm (Low)

0.272

0.288

0.313

0.290

0.296

0.329

Step 5- If the Sub Brightness has changed, re-adjust it to set Low light to

10 cd/m2.

Step 6- Find the 75% white area using the color sensor.

Step 7- Access the G Drive setting and set G Drive to " D8 ".

Step 8- Access the B and R Drive settings and adjust B and R Drive to

set the color temperature as shown in table 1.

Step 9- Repeat item (4 to 7) to set both Low light and High light.

Step 10- Increase the level of R, G and B Drive to the largest level of "FC".

Step11- Re-adjust Low light level again.

Step 12- Change white balance to "Normal" and repeat procedures (3 to

11) for Cool mode.

Step 13- Change white balance to "Warm" and repeat procedures (3 to

11) for Cool mode.

Step 14- Change color temperature to "Cool" and Reset Sub Bright value

to “30”.

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Step 15- Write down the color temperature of the R, G, B drive and cutoff

data into table 3.

Table 3

White Balance

R Drive

Cool

Normal

Warm

G Drive

B Drive

R Cutoff

G Cutoff

B Cutoff

Step 16- Input a RGB Signal.

Step 17- Copy the PC Data R, G, B drive and cutoff data to the RGB

settings.

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HD /525i /525P Panel White Balance

Equipment required: HDTV (720P or 1080I) grayscale pattern Generator, Color

Analyzer

Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9

Pattern Display:

Figure 74

Step 1 Find the area of Low light closest to 10 cd/m2 using the color

sensor.

Step 2 Access the Sub Brightness setting and Adjust Sub bright level of

this area to exactly 10 cd/m2.

Step 3- Access the G cut off setting and Set G cut off to " 80 ".

Step 4- Access the B and R cutoff settings and adjust B and R cut off

adjustments so the color temperature matches the settings in Table 4.

Table 4

Color Temp.

Cool (High)

Normal (Mid)

Warm (Low)

0.272

0.288

0.313

0.290

0.296

0.329

Step 5- If the Sub Brightness has changed, re-adjust it to set Low light to

10 cd/m2.

Step 6- Find the 75% white area using the color sensor.

Step 7- Access the G Drive setting and set G Drive to " D8 ".

Step 8- Access the B and R Drive settings and adjust B and R Drive to set

the color temperature as shown in table 1.

Step 9- Repeat item (4 to 7) to set both Low light and High light.

Step 10- Increase the level of R, G and B Drive to the largest level of "FC".

Step11- Re-adjust Low light level again.

Step 12- Change white balance to "Normal" and repeat procedures (3 to

11) for Cool mode.

Step 13- Change white balance to "Warm" and repeat procedures (3 to

11) for Cool mode.

Step 14- Change color temperature to "Cool" and Reset Sub Bright value

to “30”.

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Step 15- Write down the color temperature of the R, G, B drive and cutoff

data into table 5.

Table 5

White Balance

R Drive

Cool

Normal

Warm

G Drive

B Drive

R Cutoff

G Cutoff

B Cutoff

Step 16- Change the Input signal to 525i and 525p.

Step 17- Copy the HD drive and cutoff data to the 525i and 525p settings.

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625i Panel White Balance

Equipment required: HDTV (625i) grayscale pattern Generator, Color Analyzer

Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9

Pattern Display:

Figure 75

Step 1 Find the area of Low light closest to 10 cd/m2 using the color

sensor.

Step 2 Access the Sub Brightness setting and Adjust Sub bright level of

this area to exactly 10 cd/m2.

Step 3- Access the G cut off setting and Set G cut off to " 80 ".

Step 4- Access the B and R cutoff settings and adjust B and R cut off

adjustments so the color temperature matches the settings in Table 4.

Table 6

Color Temp.

Cool (High)

Normal (Mid)

Warm (Low)

0.272

0.288

0.313

0.290

0.296

0.329

Step 5- If the Sub Brightness has changed, re-adjust it to set Low light to

10 cd/m2.

Step 6- Find the 75% white area using the color sensor.

Step 7- Access the G Drive setting and set G Drive to " D8 ".

Step 8- Access the B and R Drive settings and adjust B and R Drive to set

the color temperature as shown in table 6.

Step 9- Repeat item (4 to 7) to set both Low light and High light.

Step 10- Increase the level of R, G and B Drive to the largest level of "FC".

Step11- Re-adjust Low light level again.

Step 12- Change white balance to "Normal" and repeat procedures (3 to

11) for Cool mode.

Step 13- Change white balance to "Warm" and repeat procedures (3 to

11) for Cool mode.

Step 14- Change color temperature to "Cool" and Reset Sub Bright value

to “30”.

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Sub Brightness Setting

Equipment required: NTSC grayscale pattern Generator

Panel Settings; Picture = Normal, Aspect Ratio = 16:9

Pattern Display:

Note: Adjust in a Dark room.

Step 1- Set the white balance to Cool.

Step 2- Access the All cutoff setting in service mode and adjust so that pixel

emission starts in the 2% area and there is no emission in the 0% area.

Step 3- Write down all cut off data.

Step 4- Set the white balance to Normal.

Step 5- Adjust all the cut off values to the same data values of the Cool mode

settings.

Step 6- Set the white balance to Warm.

Step 7- Adjust all the cut off values to the same data values of the Cool mode

settings.

Step 8- Apply the same pattern to the PC input.

Step 9- Repeat steps 1-8.

Step 10- Apply the grayscale pattern to the RGB input.

Step 11- Repeat steps 1-8.

Step 12- Apply a 525i grayscale pattern to the component input.

Step 13- Repeat steps 1-8.

Step 14- Change to a 525p signal.

Step 15- Repeat steps 1-8.

Step 16- Change to a 625i signal.

Step 17- Repeat steps 1-8.

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