HITACHI 42HDT51M, 55HDT51M Service Manual

Updated 5/23/05

Version 0187.2

Updated 8/11/05

No. 0187

42HDT51M: PT5-G Chassis 55HDT51M: PW1-H Chassis

SERVICE MANUAL

NN TT SS CC

AVC75: AVC5-U Chassis

PPTT55--GG//PPWW11--HH

R/C: CLU-3841WL

AAVVCC55--UU CChhaassssiiss

TO GO TO A CHAPTER, CLICK ON ITS HEADING BELOW

CONTENTS

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

PRODUCT SAFETY NOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

AGENCY REGULATORY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

ACKNOWLEDGMENTS AND TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

BASIC SETUP & OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

TROUBLESHOOTING FLOWCHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

CONNECTION DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

FINAL WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

EXPLODED VIEW (AVC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

WAVEEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

DC VOLTAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..70

CIRCUIT SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

PRINTED CIRCUIT BOARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

EXPLODED VIEW (PDP MONITOR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

QUICK REFERENCE PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce the risk of

electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Before servicing this chassis, it is important that the service technician read the “IMPORTANT SAFETY INSTRUCTIONS” in this service manual.

SAFETY NO

USE ISOLATION TRANSFORMER WHEN SERVICING

Components ha

vice Data and its supplements and b

Ser read and follow the “Important Safety Instructions” in this Service Manual.

ving special saf

ety char

acteristics are identified by a on the schematics and on the parts list in this

ore ser

Bef

ulletins

TICE

vicing the chassis

, it is important that the service technician

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

PLASMA DISPLAY PANEL

JUNE 2004 HHEA-MANUFACTURING DIVISION

SAFETY PRECAUTIONS

LEAKAGE CURRENT TESTER

(READING SHOULD NOT BE ABOVE 0.5MIU)

EARTH GROUND

TEST ALL EXPOSED METAL SURFACES

DEVICE UNDER TEST

3-WIRE CORD

ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUS AS REQUIRED)

NOTICE: Comply with all cautions and safety-related notes located on or inside the cover case and on the chassis or plasma module. WARNING: Since the chassis of the AVC unit and Plasma Panel unit is connected to both sides of the AC power supply during operation, whenever the receiver is plugged in, service should not be attempted by anyone unfamiliar with the precautions necessary when working on this type of receiver.

1. When service is required, an isolation transformer should be inserted between power line and the receiver before any service is performed on a “HOT” chassis receiver.

2. When replacing a chassis in the receiver, all the protective devices must be put back in place, such as barriers, nonmetallic knobs, insulating cover-shields, and isolation resistors, capacitors, etc.

3. When service is required, observe the original lead dress.

4. Always use manufacturer’s replacement components. Critical components as indicated on the circuit diagram should not be replaced by another manufacturer’s. Furthermore, where a short circuit has occurred, replace those components that indicate evidence of over heating.

PT5-G/PW1-H

Leakage Current Hot Check

This check must be done considering the AVC or the PDP monitor as one instrument each. With any of the instruments completely reassembled (being the instrument either the AVC center or the PDP monitor), plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with the American National Standards Institute (ANSI) C101.0 Leakage Current for Appliances. In the case of the PDP monitor set the AC switch first in the ON position and then in the OFF position, measure from across Line 1 and Line 2 of the three plug prongs, do not connect with the third prong, which is physical ground, to all exposed metal parts of the instrument (antennas, handle bracket, metal cabinet, screw heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 MIU. Reverse the instrument power cord plug in the outlet and repeat test.

AC LEAKAGE TEST

5. Before returning a serviced receiver to the customer, the service technician must thoroughly test the unit to be certain that it is completely safe to operate without danger of electrical shock, and be sure that no protective device built into the receiver by the manufacturer has become defective, or inadvertently defeated during servicing.

Therefore, the following checks should be performed for the continued protection of the customer and service technician.

Leakage Current Cold Check

With the AC plug removed from the 120V AC 60Hz source, place a jumper across Line 1 and Line 2 of the three plug prongs, do not connect with the third prong, which is physical ground. Using an insulation tester (DC500V), connect one of its leads to the AC plug jumper and touch with the other lead each exposed metal part (antennas, screwheads, metal overlays, control shafts, etc.), particularly any exposed metal part having a return path to the chassis should have a resistor reading over 4MΩ. Any resistance value below this range indicates an abnormality which requires corrective action. An exposed metal part not having a return path to the chassis will indicate an open circuit.

ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE RECEIVER TO THE CUSTOMER.

TABLE OF CONTENTS

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in HITACHI television receivers have special safety-related characteristics. These are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual.

Electrical components having such features are identified with a

1 mark in the schematics and parts list in this Service Manual.

The use of a substitute replacement component which does not have the same safety characteristics as the HITACHIrecommended replacement component, shown in the parts list in this Service Manual, may create shock, fire, X-radiation, or other hazards.

Product safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current HITACHI Service Manual. A subscription to, or additional copies of HITACHI Service Manuals may be obtained at a nominal charge from HITACHI Sales Corporation.

AVC75 - Audio Video Control Unit

PT5-G/PW1-H

PDP Module Handling

When there is need to replace a broken PDP module which is the displaying device from the Plasma monitor unit, consider the following:

1. When carrying the PDP module, two persons should stand at both shorter-edge sides of the glass-panel and transport it with their palms. Avoid touching the Flexible Printed Circuits or the chip tube on the corner of the glass-panel. Handle only by the surface of the glass panel. In case of some PDP modules, electrode repair is done by connecting between regular terminal with Cu tape and Cu wire. Please do not hook and/or damage this repair line. If it is damaged, the module will not function unless the glass-panel is exchanged with a new glass-panel.

2. When carrying PDP module, watch surrounding objects, such as tables, and also do not carry it alone since it may be dangerous and it will be damaged due to excessive stress to the module (glass-panel).

3. Please do not stand the module with the edge of the glasspanel on the table since this might result in damage to the glass-panel and/or flexible printed circuits due to excessive stress to the module (glass-panel).

1. Follow the general caution recommendations from “Safety precautions” section.

42HDT51M - Plasma Monitor Unit 55HDT51M - Plasma Monitor Unit

1. Follow the general caution recommendations from “Safety precautions” section.

2. Since the Panel module and front filter are made of glass, sufficient care shall be taken when handling the broken module and filter in order to avoid injury.

3. If necessary to replace Panel module, this work must be started after the panel module and the AC/DC Power supply becomes sufficiently cool.

4. Special care must be taken with the display area to avoid damaging its surface.

5. The Panel Module shall not be touched with bare hands to protect its surface from stains.

6. It is recommended to use clean soft gloves during the replacing work of the Panel module in order to protect, not only the display area of the panel module but also the serviceman.

7. The Chip Tube of the panel module (located upper left of the back of the panel module) and flexible cables connecting Panel glasses to the drive circuitry Printed Wiring Boards (P.W.B.) are very weak, so sufficient care must be taken to prevent breaking or cutting any of these. If the Chip Tube breaks the panel module will never work, replacement for a new plasma panel module will be needed.

8. Signal, power supply P.W.B.’s and PDP driving circuits P.W.B.’s are assembled on the rear side of the PDP module, take special care with this fragile circuitry; particularly, Flexible Printed Circuits bonded to surrounding edges of the glass panel. They are not strong enough to withstand harsh outer mechanical forces. Avoid touching the flexible printed circuits by not only your hands, but also tools, chassis, or any other object. Extreme bending of the connectors must be avoided too. In case the flexible printed circuits are damaged, the corresponding addressed portions of the screen will not be lit and exchange of a glass panel will be required.

WARNING

Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may cause birth defects or other reproductive harm (California Health and Safety Code, Section 25249.5).

When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with solder. Also, when soldering make sure you are in a well ventilated area in order to avoid inhalation of any smoke or fumes released.

SAFETY NOTICE

USE ISOLATION TRANSFORMER

WHEN SERVICING

POWER SOURCE

This plasma television and the AVC Center is designed to operate on 120 Volts/60Hz, AC house current. Insert the power cord into a 120 Volts/60Hz outlet.

NEVER CONNECT THE PLASMA AND THE AVC CENTER TO OTHER THAN THE SPECIFIED VOLTAGE OR TO DIRECT CURRENT AND TO 50HZ. TO PREVENT ELECTRIC SHOCK, DO NOT USE THE PLASMA TELEVISION’S (POLARIZED) PLUG WITH AN EXTENSION CORD, RECEPTACLE, OR THE OUTLETS UNLESS THE BLADES AND GROUND TERMINAL CAN BE FULLY UNSERTED TO PREVENT BLADE EXPOSURE.

TABLE OF CONTENTS

SERVICING PRECAUTIONS

CAUTION: Before servicing instruments covered by this

service data and its supplements and addenda, read and follow the “Important Safety Instructions” on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First.

PT5-G/PW1-H

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some fieldeffect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

General Servicing Guidelines

1. Always unplug the instrument AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit

board, module, or any other instrument assembly.

b. Disconnecting or reconnecting any instrument

electrical plug or other electrical connection.

c. Connecting a test substitute in parallel with an

electrolytic capacitor in the instrument.

CAUTION: A wrong part substitution or incorrect

polarity installation of electrolytic capacitors may result in an explosion hazard.

2. Do not spray chemicals on or near this instrument or any of its assemblies.

3. Unless specified otherwise in these service data, clean electrical contacts by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable nonabrasive applicator: 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%99% strength). CAUTION: This is a flammable mixture. Unless

specified otherwise in these service data, lubrication of contacts is not required.

4. Do not defeat any plug/socket of voltage interlocks with which instruments covered by this service data might be equipped.

5. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heatsinks are correctly installed.

6. Always connect the test instrument ground lead to the appropriate instrument chassis ground before connecting the test instrument positive lead. Always remove the test instrument ground lead last.

7. Use with this instrument only the test fixtures specified in this service data. CAUTION: Do not connect the test fixture ground strap

to any heatsink in this instrument.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or desolder ES devices.

4. Use only an anti-static type solder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ES device.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material.)

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

CAUTION: Be sure no power is applied to the chassis or

circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.)

TABLE OF CONTENTS

PT5-G/PW1-H

Use Soldering Iron to Pry Leads

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range 500°F to 600°F.

2. Use an appropriate lead free solder (see page 8). Lead solder can be used, but there is a possibility of failure due to insufficient strength of the solder.

3. Keep the soldering iron tip clean and well-tinned.

4. Thoroughly clean the surfaces to be soldered. Use a small wire-bristle (0.5 inch or 1.25 cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners.

5. Use the following desoldering technique. a. Allow the soldering iron tip to reach normal

temperature (500°F to 600°F).

b. Heat the component lead until the solder melts.

Quickly draw away the melted solder with an antistatic, suction-type solder removal device or with solder braid.

CAUTION: Work quickly to avoid overheating the

circuit board printed foil.

6. Use the following soldering technique. a. Allow the soldering iron tip to reach normal

temperature (500°F to 600°F).

b. First, hold the soldering iron tip and solder strand

against the component lead until the solder melts.

c. Quickly move the soldering iron tip to the junction of

the component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil.

CAUTION: Work quickly to avoid overheating the

circuit board printed foil or components.

Removal

1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.

2. Draw away the melted solder with an anti-static suctiontype solder removal device (or with solder braid) before removing the IC.

Replacement

1. Carefully insert the replacement IC in the circuit board.

2. Carefully bend each IC lead against the circuit foil pad and solder it.

3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to areas.)

“Small-signal” Discrete Transistor Removal/Replacement

1. Remove the defective transistor by clipping its leads as close as possible to the component body.

2. Bend into a “U” shape the end of each of the three leads remaining on the circuit board.

3. Bend into a “U” shape the replacement transistor leads.

4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the “U” with long nose pliers to insure metal to metal contact, then solder each connection.

Power Output Transistor Devices Removal/Replacements

1. Heat and remove all solder from around the transistor leads.

2. Remove the heatsink mounting screw (if so equipped).

3. Carefully remove the transistor from the circuit board.

d. Closely inspect the solder area and remove any

excess or splashed solder with a small wire-bristle brush.

IC Removal/Replacement

Some Hitachi unitized chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above.

4. Insert new transistor in circuit board.

5. Solder each transistor lead, and clip off excess lead.

6. Replace heatsink.

Diode Removal/Replacement

1. Remove defective diode by clipping its leads as close as possible to diode body.

2. Bend the two remaining leads perpendicularly to the circuit board.

3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board.

4. Securely crimp each connection and solder it.

5. Inspect (on the circuit board copper side) the solder joints of the two “original leads”. If they are not shiny, reheat them and, if necessary, apply additional solder.

PT5-G/PW1-H

CRIMP AND SOLDER

BARE JUMPER WIRE

Install Jumper Wire and Solder

DEFECTIVE COPPER REMOVED

Insulated Jumper Wire

Fuses and Conventional Resistor Removal/Replacement

1. Clip each fuse or resistor lead at top of circuit board hollow stake.

2. Securely crimp leads of replacement component around stake 1/8 inch from top.

3. Solder the connections. CAUTION: Maintain original spacing between the

replaced component and adjacent components and the circuit board, to prevent excessive component temperatures.

Circuit Board Foil Repair

Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board, causing the foil to separate from, or “liftoff,” the board. The following guidelines and procedures should be followed whenever this condition is encountered.

In Critical Copper Pattern Areas High component/copper pattern density and/or special voltage/current characteristics make the spacing and integrity of copper pattern in some circuit board areas more critical than in others. The circuit foil in these areas is designated as Critical Copper Pattern. Because Critical Copper Pattern requires special soldering techniques to ensure the maintenance of reliability and safety standards, contact your Hitachi personnel.

At Other Connections Use the following technique to repair defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure hazardous condition will not exist if the jumper wire opens.

2. Trace along the copper pattern from both wire sides of the pattern break and locate the nearest component directly connected to the affected copper pattern.

At IC Connections To repair defective copper pattern at IC connections, use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections.)

1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary.)

2. Carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern.

3. Bend a small “U” in one end of a small-gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection.

4. Route the jumper wire along the path of the cut-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area, and clip off any excess jumper wire.

3. Connect insulated 20-gauge jumper wire from the nearest component on one side of the pattern break to the lead of the nearest component on the other side. Carefully crimp and solder the connections.

CAUTION: Be sure the insulated jumper wire is

dressed so that it does not touch components or sharp edges.

PT5-G/PW1-H

NOTE: These components are affixed with glue. Be careful not to break or damage any foil under the

component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose.

Leadless Chip Components (surface mount)

Chip components must be replaced with identical chips due to critical foil track spacing. There are no holes in the board to mount standard transistors or diodes. Some chip capacitor or resistor board solder pads may have holes through the board, however the hole diameter limits standard resistor replacement to 1/8 watt. Standard capacitors may also be limited for the same reason. It is recommended that identical chip components be used. . Chip resistors have a three digit numerical resistance code -1st and 2nd significant digits and a multiplier. Example: 162 = 1600 or 1.6KΩ resistor, 0 = 0Ω (jumper). Chip capacitors generally do not have the value indicated on the capacitor. The color of the component indicates the general range of the capacitance. Chip transistors are identified by a two letter code. The first letter indicates the type and the second letter, the grade of transistor. Chip diodes have a two letter identification code as per the code chart and are a dual diode pack with either common anode or common cathode. Check the parts list for correct diode number.

Component Removal

1. Use solder wick to remove solder from component end caps or terminals.

2. Without pulling up, carefully twist the component with tweezers to break the adhesive.

3. Do not reuse removed leadless or chip components since they are subject to stress fracture during removal .

Chip Component Installation

1. Put a small amount of solder on the board soldering pads.

2. Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows. Do not apply heat for more than 3 seconds

TYPE

Chip Components

GRADE

SOLDER CAPS

How to Replace Flat-lC —Required Tools—

• Soldering iron • iron wire or small awl

• De-solder braids • Magnifier

1. Remove the solder from all of the pins of a Flat-lC by using a de-solder braid.

De-Solder

Braid

Soldering

Iron

2. Put the iron wire under the pins of the Flat-lC and pull it in the direction indicated while heating the pins using a soldering iron. A small awl can be used instead of the iron wire.

Pull

Soldering

Iron

3. Remove the solder from all of the pads of the Fiat-lC by using a de-solder braid.

4. Position the new Flat-lC in place (apply the pins of the Flat-lC to the soldering pads where the pins need to be soldered). Properly determine the positions of the soldering pads and pins by correctly aligning the polarity symbol.

5. Solder all pins to the soldering pads using a fine tipped soldering iron.

Iron

Wire

Awl

Soldering

Iron

Soldering

Iron

De-Solder

Braid

Flat-IC

Polarity Symbol

ANODES

COMMON CATHODE

MH DIODE

TRANSISTOR

SOLDER CAPS

1ST DIGIT

RESISTOR

CAPACITOR

2ND DIGIT

MULTIPLIER = 1600 = 1.6K

Solder

Soldering

Iron

6. Check with a magnifier for solder bridge between

the pins or for dry joint between pins and soldering pads. To remove a solder bridge, use a de-solder braid as shown in the figure below.

De-Solder

Braid

Bridge Solder

Soldering

Iron

Information for service about lead-free solder introduction

Hitachi introduced lead-free solder to conserve the "Earth Environment". Please refer to the following before servicing.

(1) Characteristic of lead-free solder

Melting point of lead free solder is 40-50

C higher than solder containing lead.

(2) Solder for service

Following composition is reccomended.

" Sn - 3.0Ag - 0.5Cu " , or " Sn - 0.7 Cu "

Lead solder can be used, but there is a possibility of failure due to insufficient strength of the solder.

Caution when using solder containing lead.

Please remove previous solder as much as possible from the soldering point. When soldering, please perfectly melt the lead-free solder to mix well with the previous solder.

(3) Soldering iron for lead-free solder.

Melting point of lead-free solder is higher than solder containing lead. Use of a soldering tool "with temperature control" and "with much thermal capacitance" is reccomended. (Reccomended temperature control : 320

C - 450oC)

Reccomended temperature

PWB with chip parts

320

C +/- 30oC

PWB without chip parts

380

C +/- 30oC

Chassis, metal, shield etc.

420

C +/- 30oC

(4) Identification of lead-free PWB

2003 models >> not applied 2003 models >> mixed 2004 models >> lead-free solder is intoduced

On lead-free PWB, "F" is added at the end of stamp on PWB. (e.g. DP33W

PT5-G/PW1-H

AGENCY REGULATORY INFORMATION

Federal Communications Commission Notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/television technician for help.

Modifications

The FCC requires the user to be notified that any changes or modifications made to this device that are not expressly approved by Hitachi Home Electronics (America), Inc. may void the user’s warranty.

Cables

Connections to this device must be made with shielded cables with metallic RFI/EMI connector hoods to maintain compliance with FCC Rules and Regulations.

Any cables that are supplied with the system must be replaced with identical cables in order to assure compliance with FCC rules. Order Hitachi spares as replacement cables.

Declaration of Conformity

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation.

For questions regarding this declaration, contact:

Hitachi America, LTD. Home Electronics Division 900 Hitachi Way Chula Vista, CA 91914 Tel. 1-800-448-2244 (1-800-HITACHI) ATTN: CUSTOMER RELATIONS

TABLE OF CONTENTS

ACKNOWLEDGMENTS AND TRADEMARKS

This Plasma Television complies with VESA DDC2B specifications, Plug & Play is a system with computer, peripherals (including monitors) and operating system. It works when the monitor is connected to a DDC ready computer that is running an operating system software that is capable for the plug & play.

When a Plug and Play PC is powered on, it sends a command to the Monitor requesting identification. The Monitor sends back a string of data including its characteristics.

TRADEMARK ACKNOWLEDGMENT

DDC is a trademark of Video Electronics Standard Association. IBM PC/AT and VGA are registered trademarkds of International Business Machines Corporation of the U.S.A. Apple and Macintosh are registered trademarks of Apple Computer, Inc. VESA is a trademark of a nonprofit organization, Video Electronics Standard Association.

PT5-G/PW1-H

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

Cable Compatible Television Apparatus- Tèlèvision câblocompatible, Canada.

Notes on Closed Caption:

This Plasma Television receiver will display television closed captioning, ( or ), in accordance with paragraph 15.119 of the FCC rules.

TruBass and the SRS ®symbol are trademarks of SRS Labs, Inc. TruBass technology is incorporated under license from SRS Labs, Inc.

TABLE OF CONTENTS

PT5-G/PW1-H

125V

6 A 125V

1 all AVC except 48W 0.9A (41W) 0.5W 14W AVC5-U

below

No.

Model Name

Indicated Value

Max Rating

Average

Rating (W)

Without POD.

less than 1W

Chassis

ST(W)

(W) (A)

With POD.

less than 14W

Part Model Name Chassis Name

Audio Video Control Center AVC75 AVC5-U 42” Plasma Display Monitor 42HDT51M PT5-G 55” Plasma Display Monitor 55HDT51M PW1-H

PULL

POWER

STANDBY (RED) ON (GREEN)

CH+CH-VOL+VOL- INPUT/EXIT

AUDIO VIDEO CONTROL CENTER

430mm

240mm

85mm

INTRODUCTION

The 42HDT51M and 55HDT51M are Plasma Television sets; They are constituted by the combination of two main parts, an AUDIO VIDEO CONTROL Center, and the Plasma Display monitor. Each part has a model name and a chassis name:

The AVC center is a box that controls most of the user functions of the complete TV set and conditions the signal before it arrives to the monitors.

The 42” and 55” monitors contain the displaying device, which is the plasma display panel module, and the driving circuitry, which receives the signal from the AVC center and after processing, delivers the image to the display module.

This HITACHI Service Manual is intended for the qualified service personnel and it contains the necessary information for troubleshooting the Plasma television set in case of malfunction.

55HDT51M

DIMENSIONS:

42HDT51M

POWER RATINGS:

CIRCUIT PROTECTION

CAUTION: Below is an EXAMPLE only. See Replacement Parts List for details. The following symbol near the fuse

Example:

“RISK OF FIRE - REPLACE FUSE AS MARKED”

TABLE OF CONTENTS

indicates fast operation fuse (to be replaced). Fuse ratings appear within the symbol.

The rating of fuse F901 is 6A - 125V. Replace with the same type fuse for continued protection against fire.

Specification Features

A- Plasma

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TABLE OF CONTENTS

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B- Environment

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BASIC SETUP & OPERATION

4" Minimum

BEST HORIZONTAL

VIEWING ANGLE

5’

10’

15’

20’

BEST

VERTICAL VIEWING

ANGLE

3’

0’

5’

10’

15’

20’

A buzzing sound might be heard when the plasma display monitor is turned on in a very quiet room. This is due to the plasma panel drive circuit when it is functioning. This arching sound is normal and it is not a malfunction.

Some infrared rays are emitted from the plasma display monitor’s panel that might affect other infrared controlling equipment.

High-precision technology is used to manufacture the plasma display panel; But in some cases, there are minor defects in some parts of the screen. Points that do not light, points with brightness different from that of the periphery, points with color different from that of the periphery, etc. Some pixels will always be on or always off. Please note that this is not a malfunction.

When receving still picture signals, (e.g. channel number indication or clock indication) for a while, you can see image-like when the picture varied. This is not a defect.

The plasma display panel is lighting the phosphors by the discharge of internal radiation. In some cases, this may cause the temperature of the panel surface to increase. Please note that this is not a malfunction. The Plasma TV surface temperature is higher than a Cathode-ray-tube.

The plasma panel is made from glass. Heavy shock on the front panel might damage it.

When the PDP monitor is transported horizontally, the glass panel has the possibility of being broken or increasing the picture defects. At the time of transportation, horizontal style is prohibited. More-over, please treat the plasma panel with great care because of a precision apparatus. Please instruct transporters so that it should be put into the packing box at the time of shipment.(There is a possibility that breakage of the panel or defects will increase.) Rough transportation might cause damage to the panel and pixel failure.

The plasma monitor illuminates phosphor to display images. The phosphor has a finite illumination life. After extended periods of illumination, the brightness of the phosphor will be degraded to such extent that stationary images would burn-in that part of the screen as grayed-out images. Tips to prevent such image retention are:

- Do not display images having sharp brightness differences or hi-contrast images, such as monochrome characters and graphic patterns, for long.

- Do not leave stationary images appearing for long, but try to refresh them at appropriate intervals of time, or try to move them using screen saver function.

- Turn down the contrast and brightness controls.

PDP television has luminosity and low contrast compared with CRT television.

When a screen is seen at point-blank range, a random fine grain may be visible to a dark part.

If an apparatus (VCR, etc.) antenna line is arranged near the monitor, the image may shake, or disturbance may be received.

There is some time lag betweeen the picture and the sound. You can see lip motion that is delayed compared to the sound.

Electric discharge/luminescence characteristic of the PDP panel also changes with peripheral temperature. Moreover, since there is also high power consumption value, a specified temperature environment is required.

Storing the plasma television for a period of more than 2 to 3 months without use might cause an unstable picture when the set is turned on.

Operating altitude: 800 to 1114hPa (6194ft to -2484ft). Operating temperature: 41˚F to 95˚F.

Storage Altitude: 300 to 1114hPa (31,912 to -2484ft). Storage temperature: 5˚F to 140˚F.

Frequent use of the Power ON or OFF might trigger the power protection circuit. If the TV does not turn ON, please wait a little before turning ON again.

1 Arching sound from

plasma display monitor’s panel.

2 Interference for infrared

equipment.

3 Bright and dark spots

4 Picture Image (Spectrum)

5 Display panel surface

temperature is too high

6 Plasma Surface

7 Transportation

8 Image retention

9 Luminosity and contrast

10 Granular spots

11 Disturbance to video

apparatus

12 Lip Sync

13 About the use

environment of PDP television (temperature)

14 Caution on prolonged

storage

15 Operating

16 Storage

17 Power ON or OFF

No. Items Notes

IMPORTANT NOTES

VIEWING

The major benefit of the HITACHI Plasma Television is its large viewing screen. To see this large screen at its best, test various locations in the room to find the optimum spot for viewing. The best picture is seen by sitting directly in front of the TV and about 8 to 18 feet from the screen. During daylight hours, reflections from outside light may appear on the screen. If so, drapes or screens can be used to reduce the reflection or the TV can be located in a different section of the room. If the TV’s audio output will be connected to a Hi-Fi system’s external speakers, the best audio performance will be obtained by placing the speakers equidistant from each side of the receiver cabinet and as close as possible to the height of the picture screen center. For best stereo separation, place the external speakers at least four feet from the side of the TV, place the surround speakers to the side or behind the viewing area. Differences in room sizes and acoustical environments will require some experimentation with speaker placement for best performance.

TABLE OF CONTENTS

PT5-G/PW1-H

10cm (4 inches) or more

Wire

Stabilization bolts

(Provided)

String or Wire

Wood Screw

To take measures to prevent the Plasma Display from tipping over and prevent possible injury it is important to mount the unit in a stable place.

Securing to a table-top

1. Using wood screws (two) fasten the set to the clamping screw holes on the rear of the Plasma Display stand as shown below.

2. Using commercially available wood screws, secure the set firmly in position.

Wood screw two places

Wood screw

42”

two places

55”

Securing to a wall

1. Keep the Plasma Display monitor four inches away from the wall except those hung to the wall mount bracket.

2. Secure the monitor to the wall as shown below.

42”

NOTES: 1.

Do not block the ventilation holes of the Plasma Display monitor or the AVC center. Blocking the ventilation holes might cause fire or defect.

2. The plasma television has two AC cords, one on the AVC center and the other on the Plasma Display monitor. In case of an abnormal symptom, unplug both AC cords.

3. If you purchased the wall mount bracket option, please ask for professional installer. Do not install by yourself.

Caution when moving the main unit

As this product is heavy, whenever it is moved, two people are required to transport it safely. Whenever the unit is moved it should be lifted forward using the two handgrips at the back for the 42”, and at the top and base on both sides of the 55” for stability. When moving the Display Monitor, lift the handles and the bottom frame as shown below. Do not grab the speakers or the back cover when lifting.

Handgrips

42”

55”

ANTENNA

Unless your Plasma Television is connected to a cable TV system or to a centralized antenna system, a good outdoor color TV antenna is recommended for best performance. However, if you are located in an exceptionally good signal area that is free from interference and multiple image ghosts, an indoor antenna may be sufficient.

LOCATION

Select an area where sunlight or bright indoor illumination will not fall directly on the picture screen. Also, be sure that the location selected allows a free flow of air to and from the perforated back cover of the set. To avoid cabinet warping, cabinet color changes, and increased chance of set failure, do not place the TV where temperatures can become excessively hot, for example, in direct sunlight or near a heating appliance, etc.

FRONT PANEL CONTROLS

(AVC) AUDIO VIDEO CONTROL CENTER

42”

DISPLAY

MONITOR

STANDBY (RED) ON (GREEN)

MAIN POWER

55”

DISPLAY

MONITOR

STANDBY (RED) ON (GREEN)

PULL

POWER

MENU/SELECT

L/(MONO) R

VIDEO

S-VIDEO

INPUT 5

PHONES

AUDIO

STANDBY (RED) ON (GREEN)

CH+CH-VOL+VOL- INPUT/EXIT

AUDIO VIDEO CONTROL CENTER

PHOTO INPUT

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FRONT VIEW

a MENU/SELECT button

This button allows you to enter the MENU, making it possible to set TV features to your preference without using the remote. This button also serves as the SELECT button when in MENU mode.

b PHOTO INPUT

Insert USB cable from your Digital Camera to view your digital still pictures.

c INPUT/EXIT button

Press this button to select the desired input, VIDEO 1 to 5, RGB, IEEE 1394, Photo Input or Ant A/B source. Your selection is shown in the top right corner of the screen. This button also serves as the EXIT button when in MENU mode.

d CHANNEL selector

Press these buttons until the desired channel appears in the top right corner of the TV screen. These buttons also serve as the cursor down (

e VOLUME level

Press these buttons to adjust the sound level. The volume level will be displayed on the TV screen. These buttons also serve as the cursor left (

H) and up (G) buttons when in MENU mode.

F) and right (E) buttons when in MENU mode.

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Indicating Lamp Power Status Operating

Off Off When the main power switch is set

OFF.

Lights Red Off When the main power switch on the display

(Stand-by) monitor is ON, and the AVC Center is OFF.

Lights Green On Display monitor MAIN POWER is ON and

AVC Center power is ON.

Lights Orange Off Display monitor MAIN POWER is ON and

(Flashing) (Power Saving) and AVC Center power is ON, with no signal

input except antenna (no sync. signal).

MAIN POWER

STANDBY(RED) ON(GREEN)

f POWER button

Display Monitor “MAIN POWER” button

This power button is for the complete system, and must be turned ON/OFF manually. It is recommended to leave the “MAIN POWER” to ON condition (lights red) for stand-by mode.

42”

AVC POWER button

The AVC power can be turned ON/OFF manually or by remote control. Turning on the AVC Power will only turn on the AVC box if the “MAIN POWER” of the display monitor is off.

55”

g POWER light indicator

To turn the monitor ON, press the main power switch located on the lower right side of the monitor. A red stand-by indicator lamp located on the lower right corner of the front bezel will illuminate. The PDP is now ready for remote on/off operation.

h REMOTE CONTROL sensor

Point your remote at this area when selecting channels, adjusting volume, etc.

i FRONT INPUT JACKS (for VIDEO: 5)

Use these audio/video jacks for a quick hook-up from a camcorder or VCR to instantly view your favorite show or new recording. Press the INPUTS button then use the CURSOR PAD and the SELECT button on the remote control to select INPUT 5. VIDEO: 5 appears in the top right corner of the TV screen. If you have mono sound, insert the audio cable into the left audio jack.

j PHONES JACK

Use this jack for your head-phones. The TV’s internal speakers can also be heard. Turn off the internal speakers if you wish to listen to the head-phones only.

k LEARNING AV NET Sensor

Point your equipment’s remote control at this area while using the AV NET Learning Wizard.

NOTES: 1. Your HITACHI Plasma TV will appear to be turned OFF (lights orange) if there is no video input when VIDEO: 1, 2,

3, 4, 5, or RGB is selected. Check the Power Light to make sure the Display Monitor is turned off or in Stand-by mode (lights red) when not in use.

2. Remote Control can not turn ON/OFF the “MAIN POWER” of the display monitor.

REAR PANEL JACKS

42” Monitor Bottom View

Audio Video Control Center (AVC)

55” Monitor Bottom View

PT5-G/PW1-H

a Antenna Input

The remote control allows you to switch between two separate 75-Ohm RF antenna inputs, ANT A and ANT B. ANT A input can be displayed as a main picture or sub-picture. ANT B can only be displayed as a main picture (ANT B cannot be displayed as a sub-picture).

b Audio/Video Inputs 1, 2, 3 and 4

By using the INPUTS button, the CURSOR PAD, and the SELECT button of the remote control, you can select each video source. Use the audio and video inputs to connect external devices, such as VCRs, camcorders, laserdisc players, DVD players etc. (if you have mono sound, insert the audio cable into the left audio jack).

c MONITOR OUT

These jacks provide fixed audio and video signals (ANT A/B, INPUT 1~5) which are used for recording. Use the S-VIDEO Output for high quality video output. Component signal to Input 1 and 2, RGB and HDMI inputs will not have monitor output.

d Optical Out (Digital Audio)

This jack provides Digital Audio Output for your audio device that is Dolby®Digital and PCM compatible, such as an audio amplifier.

e S-VIDEO Inputs 3 and 4

Inputs 3 and 4 provide S-VIDEO (Super Video) jacks for connecting equipment with S-VIDEO output capability.

NOTES: 1. You may use VIDEO or S-VIDEO inputs to connect to INPUT 3 and 4, but only one of these inputs may be used at a

f Component: Y-P

Inputs 1 and 2 provide Y-PBPRjacks for connecting equipment with this capability, such as a DVD player or Set Top Box. You may use composite video signal for INPUTS 1 and 2.

NOTES: 1. DO NOT connect composite VIDEO and S-VIDEO to Input 3, 4 or 5 at the same time. S-Video has a higher priority

time.

2. S-VIDEO output may be used for recording, only when the input is of S-VIDEO type.

Inputs

BPR

over video input.

2. Your component outputs may be labeled Y, B-Y, and R-Y. In this case, connect the components B-Y output to the AVC Box’s PBinput and the components R-Y output to the AVC Box’s PRinput.

3. Your component outputs may be labeled Y-CBCR. In this case, connect the component CBoutput to the AVC Box’s PBinput and the component CRoutput to the AVC Box’s PRinput.

4. It may be necessary to adjust TINT to obtain optimum picture quality when using the Y-PBPR inputs.

5. To ensure no copyright infringement, the MONITOR OUT output will be abnormal, when using the Y-PBPRjacks, RGB and HDMI inputs.

PT5-G/PW1-H

g RGB - Analog Input

Use this 15-pin D-Sub input for your external devices with RGB output.

h RGB - Audio Input

Connect audio for RGB input (if you have mono sound, insert the audio cable into the left audio jack).

i HDMI - Digital Input (INPUT 1 and INPUT 2)

About HDMI HDMI is the next-generation all digital interface for consumer electronics. HDMI enables the secure distribution of uncompressed high-definition video and multi-channel audio in a single cable. Because digital television (DTV) signals remain in digital format, HDMI assures that pristine high-definition images retain the highest video quality from the source all the way to your television screen.

Use the HDMI input for your external devices such as Set-Top-Boxes or DVD players equipped with an HDMI output connection.

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

NOTES: 1. The HDMI input is not intended for use with personal computers.

2. Only DTV formats such as 1080i, 720p, 480i and 480p are available for HDMI input.

j To Monitor

Connect the Monitor Connection Cable to the AVC center’s “TO MONITOR” connector, and to the display monitor’s “FROM AVC” connector.

k IR Blaster

This jack provides IR output to your external components (VCR, Cable box, DVD player, etc.). With this connection, your external components can automatically be controlled by the A/V network feature. This connection will allow you to control the external components with your Plasma Television’s remote control in TV mode.

l RS232C Input

For use with third party home Audio/Video control systems which are commercially available. Please see your dealer regarding these “non Hitachi” home control systems.

m IEEE1394

These jacks provide a digital interface for your external digital devices, such as a Digital VCR (D-VHS or Set-Top-Box) by means of a single cable. When using IEEE1394 connections, you enable video and audio digital data exchange between a compatible device. This connection also enables you to control basic equipment functions (such as VCR play, rewind, fast forward, stop, etc.) from your TV On-Screen Display.

n Subwoofer Out

Connect this SUB WOOFER OUT output to the external audio component input using the sub woofer cable provided.

Ferrite Core

Sub-woofer cable (RCA Type)

o To AVC

Connect the Monitor Connection cable from the AVC center’s “TO MONITOR” to these connectors (“FROM AVC”). This is a Hitachi proprietary cable, do not use any other cable.

p SUB-POWER button

This power is for serviceman usage.

q Upgrade Card

This card slot is for future software upgrades. Hitachi will notify you if a software upgrade is required for your TV. In order to receive written notification, please complete and return your warranty card.

r To Power Swivel Connector

Connects to the Power Swivel Table Top Stand. For model 55HDT51, the stand (TTS55) is optional.

CONNECTING AV NETWORK

INSERT THIS END

CableCARD

Digital Cable

CableCARD is installed CableCARD

is not installed

In order to start cable service for this device, please contact

your cable provider

CableCARD(tm): 123-456-789-1 Host: 123-456-789-1 Data: 123-456-789-1

UnitAddress: 123-456-789-1

Acquiring Data.

Please wait.

Press EXIT to return

Not an Authorized Channel

PT5-G/PW1-H

s CableCARD Slot

This slot is for the CableCARD that will be provided by your local cable operator to gain access to chosen cable channels. The CableCARD will allow you to tune digital and high definition cable channels. Please call your local cable operator if this service is available before requesting a CableCARD (also known as Point of Deployment (POD) module).

Connect a coaxial cable to ANT A terminal of the Rear Panel Jacks. Insert the CableCARD into the slot (Top of card should be facing up as shown).

Rear Panel of AVC

If the CableCARD is properly installed or not installed, the TV will display the following respective screens.

After the CableCARD is installed, wait until the second screen below appears. The third screen below will appear if a channel is not authorized for viewing. Press the EXIT button to exit the second screen.

Please take note of all information on the screen (you will provide this information to your cable operator). Call your cable operator and give them the information from the card to start your cable service.

NOTES: 1. A digital cable subscription is required.

2. Antenna B will not be available when CableCARD is inserted.

3. Do not insert a PCMCIA card into the CableCARD slot.

PT5-G/PW1-H

ADJUSTMENTS TABLE OF CONTENTS

TO GO TO A SECTION, CLICK ON ITS HEADING BELOW

1 Adjustment procedure start up....................................................................................................25

1.1 How to get into adjustment mode ................................................................................25

1.2 Changing data and selecting adjustment code............................................................25

2 Memory initialize ........................................................................................................................25

2.1 Memory initialize operation ..........................................................................................25

2.2 Factory and service adjustments ................................................................................26

3 Amplitude Adjustment ................................................................................................................26

3.1 RGB Amplitude Adjustment ........................................................................................26

3.2 Sub-Contrast Adjustment ............................................................................................26

3.3 Brightness Check ........................................................................................................26

4 Vs, Va Voltage Adjustment..........................................................................................................27

5 White balance adjustment ..........................................................................................................28

5.1 Video Color Temperature Adjustment (High) ..........................................................................28

5.2 Video Color Temperature Adjustment (Medium)..........................................................28

5.3 Video Color Temperature Adjustment (Standard) ........................................................29

5.4 Video Color Temperature Adjustment (Black and White) ............................................29

5.5 PC Color Temperature Adjustment (High) ..................................................................29

5.6 Color Temperature Setting Correction ........................................................................29

5.7 White Balance Adjustment OSD Flowchart Diagram ..................................................30

6 Screen Check ............................................................................................................................31

7 Settings For Delivery ..................................................................................................................32

8 I2C Adjustment Data ..................................................................................................................37

TABLE OF CONTENTS

1 ADJUSTMENT PROCEDURE START-UP

ADJUST MODE XXXX

RGB(480P) Sub Cont. Adj. FACT RESET

FIRMWARE VERSION

Power Button

Indicator

LED

Infrared

Sensor

INPUT/

EXIT

Volume/LeftRight Cursor

Channel/UpDown Cursor

POWER

STANDBY (RED) ON (GREEN)

CH+CH-VOL+VOL- INPUT/EXIT

Remote Control Buttons

Front Panel of AVC

Change

Selection (Up)

Increase

Data Value

Change

Selection (Down)

Increase

Data Value

The 42HDT51M and 55HDT51M PDP TV sets undergo thorough adjustment procedures during their assembly process. These adjustments must be done to assure the best performance of the PDP set for the consumer.

Also, after servicing, these same adjustments must be done. The adjustments are all made through the I by changing data in the Adjustment mode menu.

Table 2 on pages 38-46 shows the complete parameter list with a brief description, signal format, the adjustment range and the initial data.

1.1 HOW TO GET TO ADJUSTMENT MODE

Chassis adjustment can be done by using the AVC75 front control panel buttons with PDP set turned off. Press “POWER” and “INPUT” keys at the same time, and hold for more than 3 seconds. Release the “POWER” button first and then immediately the “INPUT” button. The PDP set turns on in adjustment mode with OSD as follows.

C bus

PT5-G/PW1-H

To escape from Adjustment Mode press “INPUT” key to exit service adjustment mode. Table 2 can be found on pages 38-46.

1.2 CHANGING DATA AND SELECTING ADJUSTMENT CODE

When the PDP set is in adjustment mode, the cursor F, E, G, H and MENU keys of the remote control or front panel

may be used as the adjustment keys.

A. Use any Hitachi remote control when making an

adjustment.

G, H keys are used for selecting adjustment code.

F, E keys are used for changing data values.

MENU key is used to advance through the adjustment mode menus and pages.

B. To make a selection, use the CURSOR keys on the AVC

front control panel or the Remote Control.

C. After finishing the necessary adjustment press the R/C

EXIT key or EXIT key on the front panel. Adjustment mode is released and PDP set returns to normal condition.

2 MEMORY INITIALIZE

2.1 MEMORY INITIALIZE OPERATION

NOTE: The execution of this function returns the

adjustment codes to the preset values, therefore, adjustment data will be lost.

There are two procedures for memory initialize, this is the first.

Procedure 1

(1) Enter Adjustment mode by the method described in

sub-items 1.1 and 1.2 from item 1 (“Adjustment procedure start up”).

(2) Get to the second page of Adjust Mode by pressing

remote control “Menu” key once, or with either the R/C or front panel

G, H cursor keys several times.

(3) Select MEMORY INIT adjust code. (4) Activate MEMORY INIT by pressing

E cursor key for

more than 3 seconds.

(5) Check that the receiving channel goes to CH03. Unit

is set to preset values.

BACK TO ADJUSTMENTS

PT5-G/PW1-H

AVC75

Can be seen at black A3*

Can be seen slightly from black A5*

SIGNAL Adjustment Item Initial Value Set Value

480p BRIGHT CENT. 50H 53H 720p BRIGHT CENT. 50H 53H

VGA(60) BRIGHT CENT. 50H 4EH

RGB amplitude adj. signal

Black

White

0.7V

Recommended Equipment: ASTRO VG-823 Digital Video Generator with RB-649 Remote Box.

-Remarks

TABLE 1

7A6A5A4A3A2A1

White 100%

7 step gray scale

4 has tolerance.

4 can be between black and

Slightly from black.

Color Bar Signal

Adj. Items Memory Init.

W/B Init.(No need to use)

change of FCunit

change of PDP-module or change of I002(EEPROM ) on SIG/AUDIO PWB

change of I003(EEPR OM) on AV PWB or Memory Init.

Video white blance Adj.

affect Adj.

PC white blance Adj.

affect Adj.

Video RGB Amplitude Adj.

Adj.

PC RGB Amplitude Adj.

Adj.

Sub-contrast Adj.

affect (M-CONT4; S-CONT4)

Adj.

Initialization

Adjustment

Procedure 2

(1) Short PRST connector on the AVC AV PWB and

check that the set return to delivery settings (CH 03).

(2) Do not unplug from AC outlet until this operation is

completed and do not perform any key operation either. After this operation, each factory setting and adjust mode data should reset to delivery setting automatically.

2.2 FACTORY AND SERVICE ADJUSTMENTS

The adjustment item that is affected by the memory initialize operation is shown below:

3.2 SUB-CONTRAST ADJUSTMENT

Preparation

Receive Sub-contrast adjustment signal (Fig. 1).

Adjustment

(1) Select ‘SUB CONTRAST’ of Service Adj. Menu.

E for over 2 seconds and have it perform

Press automatic adjustment. When it’s completed, ‘Auto Adjusting’ on the screen will be disappeared.

Fig. 1 Full White

(RF Input ANT A))

=1.0 Vp-p (when

=100IRE with

=7.51IRE)

3.3 BRIGHTNESS CHECK

Preparation

(1) Start checking 20 minutes or more after the power is

turned ON. (2) Receive the color bar signal. (3) The vertical incident illumination on the screen

should be 20 lux or less. (4) Picture Format is 16:9 standard mode. (5) Select Day mode and reset.

3 AMPLITUDE ADJUSTMENT

(AVC CENTER)

3.1 RGB AMPLITUDE ADJUSTMENT

Preparation

(1) Select “Video” - “Picture Mode” - “Day” - “Reset”. Set

“Reset” of “Video” menu when PC input is selected.

(2) Input 525p(480p) of RGB amplitude adj. signal into

INPUT1(Component) input.

(3) Input VGA(60Hz) RGB amplitude adj. signal into

RGB input.

Note: Perform pre heat-run for more than 20 min. before adjusting.

Adjustment

(1) Receive 525p(480p) signal (Aspect 16:9 Standard). (2) Select ‘RGB(480p)’ of Service Adj. menu. Press

right cursor key (

E) over 2 seconds and have it

perform automatic adjustment. When it’s completed,

‘Auto Adjusting’ on the screen will disappear. (3) Receive PC signal (VGA(60Hz)), (Aspect Full). (4) Similarly as (2), select ‘RGB(PC)’ of Service Adj.

BACK TO ADJUSTMENTS

Menu, by pressing SEL button. Press

do automatic adjustment.

E for 2 sec. to

Checking Procedure

(1) Check the brightness as below.

Note: If set black level is NG, readjust item 3.1 RGB

amp. adj. and 3.2 Sub Contrast adj.

Measuring Conditions

(1) At the signal electric field strength 75± dBµ, the

specification mentioned above should be satisfied.

(2) At the input electric field 46-106dB

µ, there should be

no abnormality. * From color bar pattern below.

2003ï 3ï 5

TITLE

4. Vs, Va voltage adjustment

Adjustment part:

-Preparation

1.Turn on the set and perform pre-heat run more than 1 minute with a snow noize screen.

2.Receive full black pattern (blanking level) signal (or Video No signal; in this case, it will be autmatically turned off after a few seconds because of power save function).

3.Connect voltmeter leads to the Vs or Va and GND test points on power unit.

(Measurement error of voltmeter should be Less than 0.02V)

-Adjustment (1)Turn VsADJ to adjust Vs voltage to be within 0.1V of the value specified

in the label on the panel. *

(2)Turn VaADJ to adjust Vs voltage to be within 0.2V of the value specified

in the label on the panel. *

(3)Reconfirm that Vs voltage remains within 0.1V of the value.Readjust if Itís outside the margin.

Label example*

-Remarks

*1. Permissive level of voltage in case sufficient time of heat-run performed.

Vs: within 0.45V, Va: within 0.55V

<LOT>N6 Vs=80.0V Va=60.0V V• =140.0V Vx=60.0V

Power unit for 42 inch

PIN502• GND

PIN501• VS

VsADJ(on IC591 PWB)

PIN301 vA

VR51• VaADJ(on IC391 PWB)

PT5-G/PW1-H

Power Unit for 55 inch

VsADJ

VaADJ

GND

BACK TO ADJUSTMENTS

PT5-G/PW1-H

Specification

Video Color temperature (HIGH)

x = 0.268

42"

± 0.005

y = 0.283 ± 0.005

(Color temp: 12000K)

x = 0.264

55"

± 0.005

y = 0.263 ± 0.005

(Color temp: 15000K)

Specification

Video Color temperature (MED)

x = 0.285

42"

± 0.005

y = 0.293 ± 0.005

(Color temp: 9300K )

x = 0.285

55"

± 0.005

y = 0.293 ± 0.005

(Color temp: 9300K )

5 WHITE BALANCE ADJUSTMENTS

(PDP MONITOR)

General Notes for White Balance

(1) If the incident illumination is more than 20 lux,

change the environment (location, lighting, etc.) and ensure it to be less than 20 lux.

(2) At least one of the color drive codes must stay at its

maximum value, FF

(3) WBC code must be 00 during W/B adjustment.

5.1 VIDEO COLOR TEMPERATURE ADJUSTMENT (HIGH)

Preparation 1

(1) Set the output of signal generator to white raster.

(Ratio:100%)

(2) Component signal 42” 55”

Video level: 0.714Vp-p 0.280Vp-p SYNC: 0.286Vp-p 0.286Vp-p Set-up level: 0V 0V

(3) Input white raster signal into COMPONENT input

terminal of AVC.

(4) Set user control to Day mode. (Picture Mode) (5) Confirm that the mode is set as “Factory Setting

Mode”.

(6) Aspect:

Preparation 2

(1) Set service adjustment menu to “DEVICE ADJUST

MODE”.

(2) Set WBC to “0”.

1 Video: Expanded 2 PC: FULL

Remarks

(1) Color temperature should be adjusted under the

condition in which the screen is the brightest, thus the initial value for adjustment is set to its maximum.

(2) Adjustment is made by reducing brightness only.

Reduce a bright color for adjustment.

(3) Video color temperature & Adjustment No. are the

same, but addresses in the memory are different, thus there’s no problem.

5.2 VIDEO COLOR TEMPERATURE ADJUSTMENT (MEDIUM)

Preparation

(1) Same as “Video Color Temperature adjustment:

(HIGH)”. For 55” the video level changes to

0.700Vp-p.

Adjustment

(1) Perform the following adjustment with the remote

control.

(2) Set the CRT color analyzer (CA-100) at the center of

the panel.

(3) Set color temperature to “MEDIUM”, using SEL key. (4) Ensure that Adjustment R/G/B DRIVE (MEDIUM) are

all set as FF.

(5) After receiving White raster signal, step down the two

(or one) among Adjustment R/B/G DRIVE (MEDIUM) and adjust the value shown below.

Adjustment

(1) Perform the following adjustment with the remote

control.

(2) Set the CRT color analyzer (CA-100) at the center of

the panel. (3) Set color temperature to “HIGH”. (4) Ensure that Adjustment R/G/B DRIVE (HIGH) are all

set as FF. (5) After receiving White raster signal, step down the two

(or one) among Adjustment R/G/B DRIVE (HIGH)

and adjust the value shown in the following:

At least one of the data should be FF.

BACK TO ADJUSTMENTS

At least one of the data should be FF.

PT5-G/PW1-H

Specification

Video Color temperature (STD)

x = 0.314

42"

± 0.005

y = 0.327 ± 0.005

(Color temp: 6500K )

x = 0.314

55"

± 0.005

y = 0.327 ± 0.005

(Color temp: 6500K )

Specification

Video Color temperature (B/W)

x = 0.335

42"

± 0.005

y = 0.343 ± 0.005

(Color temp: 5400K )

x = 0.335

55"

± 0.005

y = 0.343 ± 0.005

(Color temp: 5400K )

Specification

PC Color temperature (HIGH)

x = 0.268

42"

± 0.005

y = 0.283 ± 0.005

(Color temp: 12000K)

x = 0.268

55"

± 0.005

y = 0.283 ± 0.005

(Color temp: 12000K)

Video Color Temperature PC Color Temperature R/G/B DRIVE (MEDIUM) data R/G/B DRIVE (MEDIUM) data R/G/B DRIVE (STD) data R/G/B DRIVE (STD) data R/G/B DRIVE (B/W) data R/G/B DRIVE (B/W) data

5.3 VIDEO COLOR TEMPERATURE ADJUSTMENT (STD)

Preparation

(1) Same as “Video Color Temperature adjustment:

(HIGH)”. For 55” video level changes to 0.700Vp-p.

Adjustment

(1) Perform the following adjustment with the remote

control.

(2) Set the CRT color analyzer (CA-100) at the center of

the panel.

(3) Set color temperature to “STD”. (4) Ensure that Adjustment R/G/B DRIVE (STD) are all

set as FF.

(5) After receiving White raster signal, step down the two

(or one) among Adjustment R/B/G DRIVE (STD) and adjust the value shown below.

5.5 PC COLOR TEMPERATURE ADJUSTMENT (HIGH)

Preparation

(1) This adjustment should be done after video color

temperature adjustment.

(2) Confirm that it’s set as factory adjustment mode. (3) Input white raster (ratio 100%) into RGB terminals at

VGA (75) 0.7V (No set-up).

(4) Set AVC to shipment. (5) Confirm that the screen size is ‘FULL’.

Adjustment

(1) Perform the following adjustment with the remote

control.

(2) Set the CRT color analyzer (CA-100) at the center of

the panel.

(3) Ensure that Adjustment R/G/B DRIVE (HIGH) are all

set as FF.

(4) After receiving PC signal, step down the two (or one)

among Adjustment R/B/G DRIVE (HIGH) and adjust the value shown below.

At least one of the data should be FF.

5.4 VIDEO COLOR TEMPERATURE ADJUSTMENT (B/W)

Preparation

(1) Same as “Video Color Temperature adjustment:

(HIGH)”. For 55” video level changes to 0.700Vp-p.

Adjustment

(1) Perform the following adjustment with the remote

control.

(2) Set the CRT color analyzer (CA-100) at the center of

the panel.

(3) Ensure that Adjustment R/G/B DRIVE (B/W) are all

set as FF.

(4) After receiving White Raster signal, step down the

two (or one) among Adjustment R/B/G DRIVE (B/W) and adjust the value shown below.

At least one of the data should be FF.

Remarks

(1) Same as “Video Color Temperature adjustment

(HIGH)”

BACK TO ADJUSTMENTS

At least one of the data should be FF.

(5) Write Adjustment value of video color temperature to

the equivalent PC color temperature adjustment items..

Remarks

(1) Color temperature should be adjusted under the

condition in which the screen is the brightest, thus the initial value for adjustment is set its maximum.

(2) Adjustment is made by reducing brightness only.

Reduce a bright color for adjustment.

(3) Video color temperature & Adjustment No. are the

same, but addresses in the memory are different, thus there’s no problem.

5.6 COLOR TEMPERATURE CORRECTION SETTING

This adjustment should be done after color temperature adjustment (for 42” only).

(1) Set service adjustment menu to “DEVICE ADJUST

MODE - PDP”.

(2) Set WBC to “2”.

5.7 WHITE BALANCE ADJUSTMENT OSD FLOW DIAGRAM

PT5-G/PW1-H

BACK TO ADJUSTMENTS

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