Panasonic TH-42PZ700U, TH-50PZ700U, TH-50PZ750U, TH-58PZ750U, TH-58PZ700U Service Manual

Generation Full High Definition Plasma Display TV

This Seminar covers the Full High Definition Models TH-42/50/58PZ700U and TH-50/58PZ750U

Panasonic Services Company

National Training

Prepared by

Cesar Perdomo

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.

Table of Contents

Subject Page # Subject Page #

Features 7 Power On (Multi-Circuit) 52 Models Comparison 8 Power On (Actual Commands Path) 54 High Resolution (FULL-HD Panel) 9 Power On (Vsus-Circuit) 56 Difference between the PZ700U & PZ750U 10 Method to Drive Only the Panel Drive Circuit 58 TH-50/58PZ700U Board Layout &

Description TH-42PZ700U Board Lay out 14 D3 Location 62 TH-50/58PZ750U Board Layout 15 SOS Detect Circuit (D Board) 65 Boards Name 17 P15V Distribution 69 TH-58PZ750U Board Layout (Pictorial) 18 P5V Distribution 71 Power Supply (Standby) 21 Vda Voltage Distribution 73 Standby (TH-58PZ750U) 24 Drive Reset (TH-50/58PZ750U/700U) 75

Standby (Main CPU STB5V Supply) 27 How To Bypass Drive Reset 77 Standby (STB5V Actual Path) 29 D9300 (D300) Location(TH-58PZ700U) 79 TV_SUB_ON (F_STB_ON) 31 Scan/Sustain SOS Detect Circuits 81 Standby (TV_SUB_ON (F_STB_ON

Distribution) TH-50PZ700U SUB Voltages Circuit (H

Board) TH-58PZ750U SUB Voltages Circuit (H

Board Sub Voltages Distribution Block Diagram 39 Sound SOS Detect (12 Blinks) 89 Actual Sub Voltages Distribution (TH-

58PZ750U) Power On 43 Video Process (TH-50/58PZ700U) 96 Power On Operation 44 Video Process Block Diagram 99 Power On Block Diagram 48 Signal Process Circuit 101 Power On (Commands Path) 50 Video Process 103

13 Circuit Operation When D3 Is Disconnected 60

33 DG Board SOS Detect Circuit 83 35 F+15V, DTV9V, SUB5V SOS Detect Circuit

(10 Blinks)

37 Fan SOS Detect (11 Blinks) 87

41 Video Process (TH-50/58PZ750U) 93

Table of Contents (Continued)

Subject Page # Adjustments 105 Self-Check 107 Self-Check Menu 108 How To Reset 109 Check Point 110 Service-Man Mode 111 Service-Man Mode (Menu) 112 Internal Test Patterns 113 Driver Set-UP Adjust ment 114 Initialization Pulse Adjustment 115

Topics

Features Model Differences Boards Description Power Supply/System Control SOS Detect Circuit Signal Process Adjustments Serviceman Mode

Features

V-real Technology for Ultimate High Picture Quality

• 1080p HD Plasma Panel

• 1080p Digital Processing Chip-Set

• 1080p Digital Re-mastering Processor

• 4,096 Equivalent Steps of Gradation

• Max. 5,000 : 1 Contrast

• Digital Optimizer

• Cinema Mode (PZ750 models only)

• Advanced 3D Color Management

• Motion Pattern Noise Reduction

• Sub-Pixel Controller

Other Features For Comfortable TVs Life

• EZ Sync

• SDHC Card Networkability (AVCHD/MPEG2/HD-JPEG) (PZ750 models only)

(1920 x 1080 pixels)

AVCHD/MPEG2

/HD-JPEG

Viewer

Input

Input x3

HDMI

Sync

BBE

VIVA

• High Quality Elegant Design

• Advanced Smart Sound Speaker System

• BBE VIVA

Models Comparison

High Resolution (FULL-HD Panel)

The Full-HD plasma panel boasts a total of about 2,070,000 pixels (1920 x 1080). It renders true-to-life HD images with about twice the resolution of a standard HD panel.

HD PDP

(approx. 1,050,000 pixels)

(approx. 2,070,000 pixels)

●

Full-HD PDP

●

1080

768

●

1366

(Image resolution about twice as high)

●

● ●

1920

*When compared to the 50PX600

●

About Twice the Resolution of a Standard HD PDP!

Difference between the PZ700U & PZ750U.

Only the PZ750U series has:

1. Extra HDMI input (Front) (GH Board)

2. Capability of video Playback (Mpeg2/H.264 on SDHC card ) (JG Board)

3. Pro-Setting & Studio Reference Modes

Movie images are some of the most difficult for TV displays to reproduce. By working closely with movie studios for many years and applying research by the Panasonic Hollywood Lab, Studio Reference Mode TVs enables the replication of colors that was originally intended by the director, exactly the way they are seen on reference monitors in professional film editing rooms.

Pro-Setting Mode

to suit personal preferences. Just the touch of a button on the remote executes setting adjustments such as tint, brightness, contour emphasis, gamma compensation and black expansion, which would otherwise require the use of special equipment to accomplish.

offers the precise, highly detailed adjustment of Image quality

on Panasonic plasma

The PZ750 models have better skin tones/rendering

Board Layout

TH-50/58PZ700U Boards Layout & Description

TH-42PZ700U Boards Layout

This is the only model of the PZ700 series that does not have the DH board. The “Full HD” Circuit (DH

Board) found on the TH-58/50PZ700U models, is built-into the “DG” Board

TH-50/58PZ750U Boards Layout

The PZ750 models do not have the DH board. The “Full HD” Circuit (DH

Board) found on the TH-58/50PZ700U models, is built-into the “DG” Board

• The PZ750 models have a board that processes the video data from

the SD card, H.264 Decoder board (JG).

• This board is only used on the PZ750 series.

Boards Name

Board Name Function Board Name Function

P Power Supply D

PB Fan control C1 Data Driver (Upper Right)

H Speaker out, Sound Processor AV Terminal,

AV Switch

DG DC-DC Converter Digital Signal Processor,

Microcomputer HDMI Interface, Peaks Lite 2, Full HD

JG H264 Decoder (SD Card Video) (PZ750 Only) SC Scan Drive

G Front terminal, AV3, Key Switch SU Scan out (Upper) K Remote r eceiver, Power LED SD Scan out (Lower)

S Power Switch SS Sustain Drive GS S D Card Slot SS2 Sustain Connector (Upper)

GH HDMI3 in (PZ750 Only) SS3 Sustain Connector (Lower)

DH Full HD (TH-50/58PZ700U Only)

C2 Data Driver (Upper Center) C3 Data Driver (Upper Left) C4 Data Driver (Lower Left) C5 Data Driver (Lower Center) C6 Data Driver (Lower Right)

Format Converter, Plasma AI, Sub-Field Processor

TH-58PZ750 Boards (Pictorial)

Power Supply

(STAND-BY)

The Power Supply circuit board used on the TH50PZ/PE700U/750U and TH58PZ/PE700U/750U models is divided into 2 different sections: Multi and Vsus

1. The Multi

P15V, P5V, and Vda.

2. The Vsus

section generates all the Standby voltages plus the F_STB_15V,

section generates the Sustain voltage

Power Supply (Standby)

• When the TV is connected to the AC line, the power supply outputs 5V.

• The 5V is applied to the D board and the DG board. The 5V on the D board in the

Panel Drive Section is not used at this time.

• When the DG board receives the 5V from the Power supply, it outputs the

“F_STB_ON” command for 30 seconds.

• “F_STB_ON” command is applied to the power supply board to generate the

“F_STB15V”, which is applied to the H board.

• The H board has a DC-DC converter circuit that generates the 9V and 5V used by

the H, DG, JG, PB, K, and GH.

Standby (TH-58PZ750U)

Multi-Section

• When AC is applied to the TV, the Standby circuit on the multi-section board outputs

5Vdc.

• The STB5V is applied to the Power MCU (MC701) and a switching transistor of the

power supply circuit.

• The STB5V is also provided to the SS board. A jumper at connector SS34 of the SS

board routes the 5V back into the power supply board to turn on the switching transistor. When this transistor is on, the STB5V is output to the D and DG boards.

• On the D board, the STB5V is applied to a 3.3V regulator (IC9011). During standby

operation, this regulator is kept off to disable the panel drive circuits. The STB5V is also applied to a 3.3V regulator (IC5604) on the DG board to provide the supply voltage (STB3.3V) to the Main CPU (IC1100). The STB3.3V is also applied to the Remote Control receiver and the power LED on the K board. Furthermore, the STB3.3V is provided to the SD card slot (Not shown in the diagram).

• When the Main CPU IC1100 receives the 3.3V, it outputs the

“TV_SUB_ON/TUNER_SUB_ON” command to the Power MCU (MC701) located on the Power Supply board. Subsequently, the power MCU outputs the following commands:

1. “BIAS ON” to activate the AC relays

2. The “PFC ON” to start the Power Factor Control operation and create the DC

voltage needed by the Power Control circuit

3. “F_STB_ON/OFF_” to command the turn-on of the DC-DC converter (Q305-Q306)

and output the “F+15V”

The “F+15V” is applied to the 5V/9V regulator, IC3500, on the H board. The output voltages of IC3500 are used on the H and many other circuit boards. To avoid catastrophic failures, they are monitored by an SOS Detect circuit for over-voltage and over-current conditions. The SOS Detect circuit is controlled by the “TUNER_SUB_ON” command from the Main CPU (IC1100) on the DG board.

Standby (Main CPU VCC Supply)

STB3.3V provided to the “DG” board during standby

IC5604 (STB3.3V Reg.)

• The STB5V is connected to the D and DG boards. During standby, this voltage is not

used by the D board. On the A board, the STB5V is applied to the 3.3V regulator (IC5604) to generate the “STB3.3V”, which powers the “MAIN MICON Genx4” (IC1100). The “STB3.3V” is also connected to the K board to power the remote control receiver and the power LED (Not shown here).

Standby (STB5V Actual Path )

• This is the layout of the actual location of the boards and the connectors involved in

the development of the STB5V.

• The steps 1~5 indicate the sequence of events that takes place after the TV is

plugged-in.

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